Different square wire rope hoist

 Electric  Wire rope hoist   in order to adapt to more areas and places, wire rope hoist series gradually improved, more targeted use of different kinds of occasions, the current series electric wire  rope hoist  products mainly include: single and double speed electric hoist, explosion-proof hoist, mini gourd, metallurgy dedicated electric hoist, double girder trolley type, square low headroom hoist and so on.
       Said to play a square wire rope hoist, wire rope it should be regarded as the most successful series in improved products, compared to ordinary cd wire rope hoist the differences, the square is more conducive to install, especially when floor space restricted circumstances, square wire rope hoist is undoubtedly the first choice, in addition to a square wire rope hoist is also called "low headroom  lift hoist   product tends to no noise, particularly good value for money, a listing popular favor.

How upside down hoist lifting stage lighting equipment

 Upside down is mainly used in electric  rope hoist  lifting stage lighting and other equipment that is specifically designed for children for the tour, due to increasing demand gourd upside down, Comin popularity upside down for you in the end is how to hoist lifting equipment used in lamps.
   Wire rope hoist  upside down, respectively, with the top and bottom of the hook, a stage lighting is used to connect the other end is fixed to beam lamps, need to pay attention is to ensure a balance between multiple hoist. Upside down hoist black surface treatment, in order to adapt to the environment more beautiful on stage, chain galvanized, not easy to rust, grease packed in the gear box, oil does not penetrate into the stage.
         Stage  wire rope hoist  versatility particularly good for 230V ~ 460V between the lifting height of 26 meters or 85 feet as the standard,

Electric hoist can not overcome the weight stayed defects

  Speaking of hoist operation, mainly refers to the movement up and down, under normal circumstances is not stayed heavy, but the rail car hoist operations can overcome the defects can not be stayed heavy, following your brief:
Which mainly by  Hoist and trolley ,  lift hoist   etc., the main features are: electric hoist and trolley body length direction perpendicular to the direction of walking, lifting hoist and trolley to rotate back and forth between, can not overcome the general electric hoist heavy stayed defects.
        This section electric hoist can well meet the operational needs of the rail car operation to complete before the first cable-stayed rail or heavy lifting loading the working process, the electric rope hoist  easy to damage. So as to achieve the efficient and safe destination, but more importantly is to expand the field of application of electric Wire rope hoist  and scope.

Electric hoist limit the application of anti-twist device

Limit anti-twist device from the name, you can probably understand the role of the accessory, a security device accessories, the following details for you to do the following:
       Limit anti-twist device is suitable for all types of electric  Rope hoist  limit anti-twist device. Mainly by the stopper plate, plate, stopper bolts, sensors, frame, adjustment bolts, nuts and other components. Stopper bolt and the nut is to control the stopper plate is formed integrally mounted on the plate slot. Plate, the frame with control by adjusting the bolt and eventually limit the sensor plays the role of anti-twist.
       Limit anti-twist structure is simple, easy to manufacture, low cost, easy to operate, safe and reliable, with control electric  wire rope hoist  illegal operation, to prevent twisted rope wrapped around a significant role. Currently in electric  lift hoist  has been gradually applied.

Wire rope sling in the application domain classification

 Wire rope sling is the most common, and most people live close to, the following for you to spread information on wire rope slings in different areas of the main categories, for reference:
         Mine coal or metal ores as well as personnel, materials and so rely on the rope, the rope so mine as an important key materials. And require high quality steel wire rope, wear resistance, corrosion resistance, fatigue resistance, run absolute security.
         Wire rope ropeway is mine in the rugged mountains and forest industries between important means of transport. It is compared with other transport facilities have not occupy farmland, low investment, low energy consumption, etc., so that many regions are actively developed.
         The wire rope  lift hoist   wire rope hoist crane generally, to be wound on the reel multilayer should have good bending fatigue performance.
         Fishing wire rope, sea fishing operations with the  wire rope hoist  rope requires good corrosion resistance, flexural fatigue resistance and flexibility, and so on. Specific uses include trawls, set nets, net volume of such surface of the wire rope are galvanized by hot dip galvanizing process.
         Shipping port facilities such rope wire rope requirements abrasion resistance, compression resistance, fatigue resistance, tensile and large. Is mostly in the port machinery line contact wire, in a tower crane and tire wire  Rope hoist  is also available on four strand wire rope and other varieties, the effect than ordinary rope is good.

Double the rope electric hoist rope around is how to achieve?

 Double the electric rope hoist lifting objects more conducive to a balanced, then double the rope around the rope hoist rope is how to achieve?
       Double the  wire rope hoist  rope around a special device to achieve its work around the rope, the device mainly comprises a rack and set the rack motor, reducer, control box, control box with two motor cables, racks is also a measuring wheel, spindle, measuring wheel and the control box cable, pivot with the first row and the second row of the sheave sheave, reducer output shaft with rope drum, rope drum with clamping device, reducer output shaft has a double rope drum, rope drum drive motor through reducer rotating, driven by a second motor through the second double rope drum rotation speed reducer, double rope drum has a fixed pulley, rope through the measuring wheel, the first row sheave, fixed pulley, sheave and the second row of the clamping device is connected.
       Double the rope electric hoist rope around the device not only can accurately find the midpoint of the rope and the other end to make fully automated winding process, and avoid self-coiling rope sharply bent and caused damage.

Why metallurgy electric hoist with high temperature insulation function

Wire rope hoist working-level metallurgical M5, M6, its use of the venues may not have flammable and corrosive gases. Metallurgy electric hoist not only set up a dual brake and set up a double-digit and drop ceiling limit device, and set the overcurrent protection, voltage protection, phase sequence protection, overload limiter from the weight, decreased speed power protection variety of security devices. Enhance the safety performance of  rope hoist   lifting the most important point is that with high temperature insulation function, which is the common gourd irreplaceable. Metallurgical hoist high temperature insulation function is how to achieve it? The following Shanghai Engineering Group for you described as follows:
Metallurgical hoist function is dominated by high-temperature insulation insulation board to achieve, in the gourd drum and shell design and installation of the machine below the heat shield to isolate the molten metal heat radiation; lifting and run the motor insulation class uses F-class, built-in lifting the motor windings overheat protection; hoist rope part of the configuration is the metallurgical occasion dedicated high strength high temperature resistant wire rope.
       Wire rope electric hoist designed for lifting metallurgy molten metal or other high-temperature solid-state materials, widely used in the mining industry and metallurgy casting and other workplaces.

Teach you how to install the hoist yourself

   It is often referred to winch hoist  hoist equipment   powered by a human or mechanical reels, thus completing the winding rope traction work. And winches can be vertical, horizontal or inclined pull lead weights, the following introduce you how to install the winch.
       To determine the winch brake before installing brake should be flexible and reliable, not wet or sticky dyed oil, if slippage should be promptly adjusted, cleaned. Installation First to note is the anchor windlass and must be firmly connected, the general should be set sun shed. Ensure that the positive and negative direction of rotation winch should start as indicated on the controller. Secondly; if there is a row of  Rope hoist   wire rope should be adjusted so that kept perpendicular to the roll. No row rope winches should be adjusted first guide pulley position, so that the roll axis perpendicular bisector rope and the distance from the drum roll length not kid 20 times. Finally; wire rope on the drum so neat, compact, and prevent the rope squeezed. Jane volumes to be retained on the wire rope of at least four laps. Drum controller should progressively switched on continuously from one side prohibited by "0" point to the other side.

Ensure the safety of electric hoist lifting the 4 major device

Rope hoist lifting hanging objects, when the wire rope or load chain tension should be parking, electric hoist according to the direction of the hook again to identify the hook shake while lifting workers should check whether hanging objects hanging in prison, wire rope hoist  lifting, do not over-Meng, hanging objects from the obstacle when accelerating until after lifting speed, electric hoist lifting of hanging objects easily big high, generally over a secure channel up to 0.5m for the good things. In addition to the above considerations, the Shanghai workers to introduce you to the following to ensure safe lifting hoist four major devices:
       An electromagnetic brake: brake is unique design feature is that even at full load, when the power suddenly cut off, the brake immediately play a role.
       2, reverse phase protection: circuit design ensures that when the motor power phases and to avoid wrong connection, do not cause the motor burned.
       3, the band brake: the use of flexible steel clamping brake wheel braking torque generated.
       4, normally open brake,  rope hoist  in non-working condition, the brake in the disengaged state agencies under external loads can produce movement; bodies need exercise in working condition when you stop, you can apply the necessary force to friction brake combination.

Stainless steel manual hoist Features

The following is a brief introduction of stainless steel  manual hoist  your characteristics.
      Stainless steel has been said, in fact, both stainless nature, but also acid resistance. Stainless steel and corrosion resistance is due to chromium-rich oxide film on the surface of the formation. Tests showed that steel in the atmosphere, water and weak nitric acid medium and oxidizing medium, the corrosion resistance of chromium steel with the increase of the water content increased, when the chromium content reaches a certain percentage, the occurrence of corrosion resistance of steel mutation, that is, from rust to rust, never corrosion to corrosion.
      Many classification of stainless steel. By major chemical composition can basically be divided into chromium stainless steel and chrome-nickel stainless steel two systems; by zoning, there are nitric acid-resistant stainless steel, acid-resistant stainless steel, water-resistant stainless steel, etc.; classification according to features can be divided into non-magnetic stainless steel, free cutting steel, low temperature steel, high-strength stainless steel and so on.
      Because the material unique advantages, making stainless steel  Chain Block  has excellent corrosion resistance, formability, compatibility, and in a wide temperature range of strength and toughness characteristics. Stainless steel in heavy industry, light industry, household items and architectural decoration industry and other industries widely used.

Single, double speed electric hoist transmission structure

   Single (CD1 type), double speed (MD1 type) electric hoist mainly by the  lift hoist   operating mechanism, electrical installations of three parts.
1, the lifting mechanism: Hoisting mechanism through the coupling by the hoisting motor hollow shaft driven by the subtractor drum rotates, so that the wire rope around the drum driven hook device up or down.
(A). Lifting motor
Lifting motor with a larger conical rotor motor starting torque to meet production Lu frequent intermittent work directly start, lifting the motor, there are two, ZD single speed motors, ZDS two-speed motor, ZDS motors normal speed and Slow ratio of 10:1.
(2) gear
Helical gear reducer using three deceleration. Gears and shafts made of alloy structure processing. And after appropriate heat treatment; box, cover with less cast iron, vibration better, reliable sealing.
(3) High-speed roll made of cast iron or steel pipe manufacture, use splined transmission of power; drum machine shell is made of welded steel plate. Reed  Wire rope hoist  drum device is a central part of the organization and operation of the side plates connected to both ends of the hoisting reducer, motor connection, the lower rope with hook device through joint work, before the top of the enclosure, install a limited Locator guide devices.
(4) hook device
Hook using special steel chain from the system. Thrust ball bearings used through the hook beam associated with the housing, so that the hook operate freely. ≤ 5t hook device is a single pulley, 10t for the double pulley.
2, run structure: electric trolley, run the motor running reducer, driven trolley of common components run institutions, functioning institutions led through the host side with drum equipment reciprocating movement. Its speed is generally 20m/min, or may choose 30m/min. ≤ 5t of a drive device, ≥ 10t using two sets of drive means.
3, the electrical installations:  rope hoist  electrical device consists of electrical control box, push button switches, limit and connector wires and other components. Button switch operating voltage is typically 36V, under the direction of the symbol shown on the push-button switch, push the right buttons, relay control box through the closing and opening, you can control the action gourd.

Tensioner hoist protection device

   Widely used to  lift hoist  around people visible, large port terminals as small farmers plant material crops for vertical lift, so widely used is closely related to their safety, the following is a brief introduction hoist your tension and protection devices, allowing you more Learn  Hoist equipment .
Multi-hoist the tensioning device is mainly to prevent traction between the member and the drive wheel slippage and settings. Traction pieces usually have tape, ring chain, face registration plate in the form of shares in connection oh, so use different methods of tensioning, the commonly used multi-hoist method of tensioning tensioning screw, hammer lever tension, heavy Hammer tensioning and meet tensioned.
       lift hoist  safety protection device is mainly reflected in the normal course of their work, such as: a sudden power failure will cause the conveyor inversion phenomenon occurs, the main reason is to enhance the machine during normal working hours by working part series on this side of the hopper has been filled with materials, and part of a series of non-working side of the material is unloaded, loaded and unloaded on both sides of the hopper imbalance, it will cause a reversal conveyor accident. To avoid this situation, typically the device to be provided in the rotation braking device check.

Electric hoist limit, limit switches

Electric hoist limit, limit switches


Wire rope hoist limit switch: You must set up automatic reset type, the lower limit switch. Limit switch should be installed to ensure Diao limit switch is triggered, the left upper safe distance of not less than 1.8M. Lower limit switch should be installed to ensure that the cage rated load drops Publishing trigger the switch so that the cage system to stop, this time from the publication of the trigger switch should have a certain subordinate stars. Confirm ladder cage runtime, the higher limit and lower limit position limit position for the proper and devices sensitive and reliable. Safety checks should be done action experimental verification.
rope hoist limit switch: run out of the cage and jump after the city limit switches, limit switches shall cut off the mains so that the cage parking. Limit switches for non-automatic non automatic reset type, its action must be manually reset after the cage to make when restarted.

Multi elevator installation and commissioning

     lift hoist  to be installed after purchase debugging before normal use, to explain how the hoist installation and commissioning, for your reference:
Multifunction  Hoist equipment  is mainly used to enhance the cleaned tubers upgrade to the buffer positions, by the head, the middle section of the base drive and run components. Head from the upper chassis, hood and drive roller components. Multi elevator from the lower part of the chassis frame, taut drum composition by adjusting the drive belt tensioning screw nut. And in order to meet the upgrade potatoes and sweet potatoes out of the water when the request to open 65 minutes in the bottom drainage holes. Starting from the middle section of support, protection and seal in the middle of the chassis components.
      Multifunctional  lift hoist  intermediate casing standard section length is 2m, in order to meet the needs of different users lifting height can also support non-standard sections of different lengths. Drive by the BWD-type and in order to meet the different needs of users, in accordance with the transmission in different positions relative to the body of the left and the right equipment installed.

Pneumatic hoist electric hoist with different

Pneumatic hoist electric hoist with different

  Pneumatic hoist and electric hoist  Hoist equipment  are considered, the use of different areas, and today pneumatic hoist and electric hoist to explain the difference.
      Pneumatic hoist is mainly driven by compressed air tools air motors and a kinetic external output. Pneumatic hoists are very small volume, shape is also very beautiful, very reasonable structure manufactured words, using high-precision processing, strict material selection, strict heat treatment to achieve this new type of high-quality, ease of use, power is more Large electric hoist and other special features that are not many features and strengths.
      Pneumatic hoist  rope hoist  work on adaptation contrast:
1, both of which provide multiple different ways of working, such as: reciprocating, oscillating, impact and so on.
2, speed adjustment and output power adjustment simple, through the supply valve and control valve operating handle can be easily carried out.
3, the rotary pneumatic hoist range can provide more levels of choice, from 100rpm to 70000rpm.
4, according to the value of the weight ratio of output power capacity. In the case of the same power output, compared with electric hoist tool is small and lightweight.
Pneumatic hoist with electric hoist in economic terms compared:
1,  wire rope hoist  lower initial investment, but long-term use of high energy consumption, and tool maintenance, replacement cost is higher required.
2, the weight of the hoist pneumatic tools are generally 3-4 times, not suitable for long working hours, and pneumatic tools actually improve efficiency.
3, pneumatic tools pneumatic tube to establish the initial investment required equipment, but the long-term use in energy consumption and maintenance costs are lower tool.

Electric wire rope hoist test classes and test methods

     Wire rope hoist  is a kind of wire rope electric hoist as the carrying capacity of this  Hoist equipment  device equipped with running after the car as the overhead monorail cranes and electric single-beam or double beam, cantilever, gantry cranes for lifting heavy hoist lifting and walking run institutions.
        Electric wire rope hoist should follow the basic test requirements, test categories, and each test detection method. But also as technology advances, new testing technologies are emerging, each manufacturer according to the actual conditions of the use of appropriate detection methods.
        Now the current stage domestic wire rope hoist for performance testing is still in the semi-automated state, most based on the traditional use of self-developed contacts - relay control technology test system. Now we are using more advanced computer-controlled test system is also inseparable from the use of contactors and relays technology to control by manual testing process conducted for important safety rope hoist  braking performance parameters and declining amount of testing, the engineers and technicians personnel based on actual experience, we propose a stroke control switch control using the detection method.

Electric hoist brakes ensure safe lifting heavy objects

Electric hoist brakes ensure safe lifting heavy objects

     Valuables dangerous goods lifting wire rope electric hoist,  Rope hoist  itself is compact, motor, brake, gear triple as a whole, goes for the joint shaft, no couplings, first brake and motor as a whole. Hoist drum separate safety brake, the safety brake no electricity, is not electrically effect, the first brake work, the safety brake is not working, when the first brake malfunction or other parts resulting in heavy damage to decline, the security brake immediately safe braking. Do not mess with a rope, no hoisting, rope guides difficult to damage, etc., to ensure adequate safety in lifting heavy objects.
       Wire rope hoist  technical requirements
1, manufacture, installation, testing, use and quality control, etc. shall comply JB/T1306-94 Special Commissioner's Office (2007) No. 375, "on metallurgical  lift hoist  remediation work-related advice notice" requirements;
2, plant height should be higher than the highest point hoist size ≥ 200mm;

How to avoid electric hoist operation error

   Rope hoist  to normal operation, in addition to the use of the environment around some requirements, we will need to do before using the hoist inspection in order to ensure normal operation of electric hoist no error fault.
      Electric hoist parts before running check whether there is damage, whether  wire rope hoist  lifting weights vary with each other to contain links to other items, lifting heavy objects must not exceed the rated load hoist, electric chain hoist increase the tonnage increase in the number, the lower lifting chain hook should not not in the chain flipped.
      Electric hoist is widely used for small  hoist equipment   the use of safety-critical and do the inspection before use, precautions during use and routine maintenance work in order to avoid electric hoist operation error, delay its life.

Hand chain hoists and trolleys with the tacit understanding

Chain Block chain through the hands clockwise pull, bracelet wheel rotation, the friction plate ratchet, brake pressure into one common rotation. Thus, the device is splined sprocket holes on the lifting gear driven lifting chains, heavy lifting so smoothly. Because their small size and other  chain block  own advantages result from its use is extremely widespread, chain hoists in addition can be used alone, can also be used together with the trolley wheel.
      The following is   manual hoist  unparalleled advantages: new design overload protection device, using concealed structure; chain hoists alloy material manufacture, and the surface hardening treatment, longer lifetime; chain hoists According to national standards, the same model without changing the part of ordinary hoist installation structure; hoist chain hoists used to effectively protect and prolong the life of the hoist.
      With Hand car (or push trolley) can be achieved hoists walking around in orbit.

Electric hoist apparatus and its role in the six

  Wire rope hoist six major installations and the role each user should be aware that even with a timely response to resolve minor problems arising in the process, to ensure safety and efficiency.
      An electromagnetic brake: electric hoist brake is a unique design, which feature full load even when the power supply is suddenly cut off, the brake immediately play a role.
      2, the mechanical load brake: mechanical load brake at full load does not result in a fall faster and faster, and is independent of the motor brake, the brake even when the motor stalled, the role of mechanical load brake still makes a slow load speed slowly declining.
      3, hook and safety Tongue: hook is forged from high tensile steel and heat treated to meet the strength requirements, the next level of the hook can be rotated degrees, and with a hook in order to ensure safety tongue rose the security.
      4, reverse phase protection: circuit design ensures that when the motor power phases and to avoid wrong connection, do not cause  rope hoist  motor burned.
      5, the limit switch: When the hoist up and down to the limit switch will be off automatically.
      6, the emergency stop switch: When the button is pressed, the power supply will be cut off, and the button to automatically lock and turn it clockwise the button can be released and can be restarted electric hoist.

Rope electric hoist with the tacit understanding

 Ribbon cable, hauling or towing cable or wire rope with fiber cable can be called. For complex terrain, difficult to access the construction site, with equipment for material handling.
     Today introduces a new form of  Wire rope hoist   electric hoist rope used in conjunction with the use of the tension between the main and sub-tower cable as a trolley carrying the lifting hoist travel rails. In between the main tower and sub-towers, Zhang set up a bearer cable, as the  hoist and trolley  track, traction traction cable trolley back and forth with the carrier, transporting materials. Lifting mechanism moves up and down movements of materials. Main and auxiliary tower walking mechanism, so that the primary and secondary synchronization tower along the ground track walk. Working bodies from the main tower of the cab control.
       According to different requirements with  rope hoist  ope and can be divided into fixed, radiation and rail mounted three ways:
       One, fixed the main and auxiliary tower are fixed, operating range only along a line carrying cable.
       2, Radiant main tower is fixed, Vice tower along a circular track running, the operating range of a fan-shaped space.
       3, the main and Walking tower are running on the track on the ground, as shown, the operating range.
       Rope electric hoist with the tacit understanding has improved signaling and safety devices, the driver through the indoor indicator for remote control electric hoist to work. Indicator can be pointed out that the heavy lifting in every moment of the vertical and horizontal position, even under adverse conditions such as weather: heavy fog, low visibility situations, but also to ensure hoist normally work reliably.

Rope hoist rope guides causes of damage

After the replacement of the drum hoist, used not long, it appeared hoist rope guides chipping "guide rope" Although the wearing parts, but in addition, there have unexplained Break off today, do a brief introduction :
      Fairlead Specifications: Unless calibration done, in general, can be divided into cast iron rolls and rolls with use, lifting height of 12 meters above the steel drum

diameter smaller guide rope, lifting height The following is the cast iron roll 12 m rope guide diameter larger.
       Wire rope hoist  drum after replacing the original components as they are not, it may lead to uneven force or guide rope installer component mismatch due. I would recommend you where to buy  Rope hoist  products, such as parts damaged, must then try to contact the original parts demanded by buyers. Explosion-proof hoist maintenance

should be in accordance with GB3836.13 danger zone rope and roller sports also involves explosion safety, belonging to non-electrical explosion-proof areas.

Wire rope hoist dynamic and static pre-stretch

rope hoist rope in use persistent extension if the request requires negligible or must be reduced to a minimum within the range, it must be pre-stretched.
       What follows is a brief introduction of the pre-stretch rope hoist and two methods commonly used in pre-stretch
       The so-called pre-stretch, refers to hoist rope in use so that lasting extension, reducing the Wire rope hoist inadvertently in the course of the security risks posed overload, the common methods include dynamic and static
1， dynamic pre-stretch: This stretch is in the closed wire rope  Wire rope hoist  for the process, and the winding of the wire rope before the final pre-stretch machine loaded on general relay. In this process, the analog actual rope pretensioned the tensile breaking and bending the composition.
2, the static pre-stretch: loaded on a wire about breaking force loads, load cycling through a series of all times maintain a certain time until the load wire rope produced entirely plastic deformation, and then uninstall.

Wire rope hoist motor protection

  For now our case  Wire rope hoist  motor protector has been developed over the last mechanical electronic and intelligent, can directly display the motor current, voltage, temperature and other parameters, sensitivity, high reliability, multi-function, debugging is also convenient, species protection action after failure glance, reducing damage to the motor, but also greatly facilitates the fault judgment in favor of the production site production troubleshooting and shorten recovery time.
       As insulation technology continues to evolve, the design of the motor requires both increased output, but also reduce the volume required to make new  Wire rope hoist  motor is getting smaller and smaller thermal capacity, load capacity increasingly weak; longer because of production increased automation, often requires the motor to run in the frequent starting, braking, reversing and variable load a variety of ways, for motor protection devices put forward higher requirements.
       Traditional Wire rope hoist motor protection device for the thermal relay-based, but the thermal relay low sensitivity, error, poor stability, protection is not reliable.

Facts, too, though many devices installed thermal relay, but the motor damage and affect normal production of the phenomenon is still widespread.
       Ideal  rope hoist  motor protection function is not up, nor is the so-called advanced, but should meet the actual needs of the scene, so that the unity of economy and reliability with high performance and low cost. The actual situation at the scene reasonable choice protector types, functions, taking into account the protection installation, adjustment, easy to use, is more important to choose quality protector.

Mini rope hoist installation any different

Mini  rope hoist  installation and used electric chain hoist installation is somewhat different, today introduced miniature rope hoist detailed installation steps:
1, the rope wrapped around the rope drum opened on paper tape, scored before the test machine, test machine if you hurry, you may cause rope rewind bashed limit aircraft.
2, avoid direct contact with the wire rope and stop frame, otherwise it will lead to the limit switch failure, causing mini rope hoist is not working properly.
3, do not let the mini rope hoist to be exposed to rain or soaked in water, mini rope hoist protection class
4, using the mini  Wire rope hoist  body can not move or rotate along the mounting rod.
5, mini rope hoist the standard of work is single phase power supply running account, and you must use an outlet with a ground wire.
6, if the state does not drop in rope hoist, rope hoist drum is coated with red paint in the last three laps rope can not be released. If continue down switch, wire rope

on the rope drum will be rewound to make rope hoist operation upside down on the open, so that the limit switch will lose effect.
       WARNING: Make sure all cables and micro rope hoist on a rotating or hot parts to maintain an appropriate distance

The difference with Rope hoist winch

     Lifting The two most common areas of electrical machinery is  Rope hoist  and winch, both of which are used to enhance the vertical, horizontal or inclined pulled cited heavy loads. So hoist and hoist in the end what difference does it  Use Shiyou should pay attention to what  Here to do a full range of summary for your reference:
       First, the hoist and hoist the main differences:
1 Run: electric hoist can lift up and down around the pan, winches only stationary use.
(2) Operating speed: general basic rope lifting speed is 8M / minute, slow winch accessories generally also 10 meters, this is based on the starting weight and the model to decide
3 Lifting height:  wire rope hoist  is generally 6M, 12M, etc., the installation of wire rope is inconvenient because you install it, the entire hoist drum, the volume will change. And you just look at his winch rope capacity, are generally 100M Accessories
4 small Rope hoist, hoist bulky Rope hoist installation requires beam, windlass fixed.
5 Rope hoist generally only done to enhance the use, in addition to enhancing hoist can also traction.
       Second, the use note:
1 after a new installation or installed after dismantling the hoist should first be empty commissioning times. But not before the installation is complete, avoid power test rpm.
2 Do not overload  hoist equipment  use. That exceed the maximum load tonnages.
3 allowed knotted rope winch, twisted around in a pitch of more than 10% broken and should be replaced.
4 Use the process should be careful not to appear to tie. Squashed. Arcing wounded. Chemical erosion of media.
5 shall not directly lifting hot objects, objects for angular to add shield.
6 Use the process should always check the rope used to achieve the standards should be scrapped immediately scrapped.

rope hoist safety device

rope hoist safety device and its effects:
An electromagnetic brake: brake design is unique, the character is even in full load, when the power supply is suddenly cut off, the brake immediately play a role.
2, the mechanical load brake: mechanical load brake at full load does not result in a fall faster and faster, and is independent of the motor brake, the brake even when the motor stalled, the role of mechanical load brake still makes a slow load speed slowly declining.
3, hook and safety Tongue: hook is forged from high tensile steel and heat treated to meet the strength requirements, the next level of the hook can be rotated degrees, and with a hook in order to ensure safety tongue rose the security. Reverse phase protection: circuit design ensures that when the motor power phases and to avoid wrong connection, do not cause the motor burned.
4, the limit switch: When the hoist up and down to the limit switch will be off automatically.
5, the emergency stop switch: When the button is pressed, the power supply will be cut off, and the buttons automatically lock and turn it clockwise to release the button, and the  Wire rope hoist  can be restarted.

Wire rope hoistin industrial applications

     Wire rope hoist  series is designed to meet and exceed the requirements of industrial production, we can according to your specific lifting needs to provide you with reliable solutions. Wire rope hoist is designed with maximum safety and comfort, and has a range of other features can be customized to meet your specific needs.
       Wire rope hoist Standard Performance: Starting weight range: 60kg-7500kg, compact design with maximum headroom, three-phase power and reliability of the classic contactor control, the control voltage 48V, durable cable Communicator, the standard electric upper and lower limit switches improved security, protection class: IP55, standard two-speed motor to achieve a gentle operation, Durable galvanized lifting chain, longer life.
       Mechanical friction torque limiter to protect operating personnel and equipment from accidental overloading, built-in control panel design, easy maintenance, the car runs standard configuration for inorganic frequency control, a variety of different car structure offers you a wide choice.
       Newly purchased  rope hoist, how to use, in the course should pay attention to what
          1. After a new installation or installed after dismantling the Wire rope hoist, should first be empty commissioning times.
2. Dynamic load test is based on rated load weight for repeated lifting and move around the test, trial and check the mechanical transmission parts, electrical parts and connecting parts are normal and reliable.
3. Wire rope hoist by hand manipulation, certificates, operator safety procedures should be fully mastered, pulled oblique hanging crooked prohibited, prohibited non-post personnel.
4. Not press both the Wire rope hoist in the opposite direction of the flashlight door button.
5. Lifting  hoist equipment  should be checked before the mechanical part, wire rope, hook, stopper, etc. should be in good condition, check the electrical part should be no leakage, grounding device should be good. Each lifting weights, lifting off the ground at 10cm should stop and check the brake situation, to work only after confirmation well. Open operation should be set up anti-canopy.
6. Lifting objects to be tied securely, and in the center of gravity. Hoists walking, weight is not too high from the ground, from man's head crossed prohibited weights, working gap not place heavy objects hanging in the air.
7. Wire rope hoist in the lifting process occurs odor, heat should immediately stop checks, identify the causes, treatment may continue working.
8. Electric switch to start using the suspension cables, insulation must be good, must slide freely and correctly push-button operation and attention of people standing position.
9. In lifting, due to failure caused by heavy decline, it must take urgent measures to no weight at decentralization.
10. Vertical lifting heavy lifting must be done, and not stayed heavy, lifting the weight is not hanging unclear.
11. After the work is completed,  Wire rope hoist  should stop at the specified location, hook rises, and cut off the power.

Gantry lift hoist safety rules

1 gantry  lift hoist  before work
a. On the brakes, hook, wire rope and safety devices and other components according to the requirements of the check card, it was discovered anomalies, should be excluded.
b. Operator must confirm to go Taiwan or track when no one can close the main power supply. When the power supply circuit breaker locking or signs, the persons concerned should be removed only after the original closing the main power supply.
2 gantry lift hoist work process
a. First class when lifting heavy objects should be hanging height of 0.5 meters from the ground after the heavy down again, check the brake performance, reliable after confirmation, then normal operation.
b. Operator in the job, should be required for the following operations-ringing alarm.
① lifting, landing weight; starting big car when traveling.
② gantry lift hoist with clear line of sight through, to continuously-ringing alarm;
③ gantry lift hoist with close cross inside another lift hoist.
④ when lifting heavy objects close to the staff.
c. Operation should be run under a unified command signals.
d. Work in a power outage, should all of the control handle to the "zero" position should be checked prior to re-work the lift hoist movement is normal.
e.  hoist and trolley  during normal operation, is strictly prohibited to open anti-vehicle parking brake; transform large trolley movement direction, the handle must be placed in the "zero" position, the agency completely stopped, can the reverse drive.
f. There are two hooks of the lift hoist, in the main, auxiliary hook for hook height with time and the two are similar, the main and auxiliary hook must work alone, so two hooks collision.
g. Two allowed two hook lift hoist hook lifting two objects simultaneously; does not work in the case adjust the brake lifting mechanism.
h. Are not allowed to use extreme position limiter parking is prohibited in the case of a load lifting mechanism to adjust the brake.
i. Strictly enforce the "do not hang ten" system:
① command signal is unknown or arbitrary command does not hang;
② does not exceed the rated lifting weight lifting;
③ spreaders unreasonable or not the object is not strong tie to hang suspended;
④ hanging objects floating on someone or put other items are not hanging;
⑤ brake failure or other safety device brake not hanging;
⑥ hanging heavy traffic processed directly without hanging;
h. If abnormal, immediately shut down, check the reason and immediately removed.
3 gantry lift hoist work
a. The hook rises to a certain height, Hoist and trolley  stops at the specified location, the controller handle in the "zero" position; Pull off the protective box switch handle, cut off the power.
b. Routine maintenance.
c. Do shift work.

Combination of low headroom rope hoist trolley

        The use of space is limited, so in these particular workplace has a special hoist equipment , "low headroom" series hoists, compact design, superior performance, in line with the latest international DIN, FEM standards to the technical level of similar foreign products . For machining, assembly, warehousing and other material handling options, especially for plant height restricted spaces. Rated load range from 1/4 to 6 tons, matching push-type or  hoist and trolley .
        Rotary low headroom trolley combination electric chain hoist can walk within a very narrow curve and not bump or scratch tracks. As a compact form factor, the track can be built with walls close.   rope hoist  operation using NF series helical gear reducer drive, both sides of the drive wheels through a six-rowed steel transmission torque, transmission torque, high reliability, avoiding the flat key shear failure condition, and that such transmission is also very conducive to hoist run part of the installation regulation; due to lower requirements for roof height, so this feature is available in low headroom existing structures or new structures to achieve cost savings. This section requires  rope hoist is ideal for low headroom, interlock and turn of most single-beam track applications, but also applies to other types of tracks.

wire rope hoist operation mode

    Divided into  Wire rope hoist  and  load chain ，  today introduces the wire rope hoist is run.
       wire rope hoist  should be checked after unpacking appearance whether bumps, damage, etc., confirm hoist intact without impairments, with 500V megger coil connector on the shell of the insulation resistance of not less than 0.5MΩ, if there is insulation resistance too low, indicating that the  rope hoist motor damp, it should be dried. Electric wire rope hoist installation then check again after all, the wiring is correct, the supply voltage matches to the empty load lifting: the main switch is flexible, which can control up, down, wire rope  rope hoist limiter flexible action, running without abnormal noise, then a decent load: ie lifting objects from the ground and repeated movements. To comply with wire rope hoist manufacturer may reasonably require in order to protect the motor function of the duty cycle of not enacted continuous use  rope hoist. Whether it is normal in the rope drum rope wound on; remaining at least three times, otherwise it will slip.
      There is also a special  rope hoist  safety equipment, explosion-proof  rope hoist, the proof in the form of "flameproof" explosion exposed parts of the gourd with a special non-sparking material, explosion safe and reliable performance. When the plant is filled with an explosive mixture, you can ensure the safety of the premise is to improve working conditions, improve labor productivity, a powerful tool.

How to choose the gantry lift hoist

   Gantry  lift hoist  s a lift hoist in the most common form, is mainly used for outdoor yard, yard goods, bulk cargo loading and unloading operations. Its metal structure shaped like a door frame, bearing girder installed under two feet directly in the ground walking on the tracks, you can have both ends of the main beam overhanging cantilever.
      Gantry  lift hoist  according to the structure and use of a variety of categories, according to the door frame structure can be divided into: Full gantry cranes, semi-gantry  lift hoist  , double cantilever gantry crane, single cantilever gantry  lift hoist   according to press girder structure of : single girder gantry lift hoist, double girder bridge crane, according to use can be divided into: ordinary gantry lift hoists, gantry cranes hydropower stations, shipbuilding gantry lift hoists, container gantry cranes. Well, according to the need to use a different choice of gantry lift hoists how it
1, single girder and double girder gantry lift hoist used
Under normal circumstances, from the weight of 50t or less, in the span of less than 35m, no special requirements, should choose to use a single main beam. If you require a large gate leg width, high working speed, or frequently lifting heavy pieces, grew up pieces, you should choose double girder gantry crane.
2, span, and boom length
Span gantry crane crane itself is affecting the quality of the important factors. Selection, to meet the conditions of use and  Hoist equipment  conform span series of standards under the premise of the span should be minimized.
3, to determine the principles of Tread
(A) along a gantry lift hoist to meet stability requirements of the track direction;
 (B) the dimensions of the goods to be able to pass the legs flat steel;
 (C) pay attention to the track B and the span S proportional relationships, and generally track B = (1/4-1/6) S.
4, gantry lift hoists pitch size determination
At work, gantry lift hoists and yard external dimensions of goods and transport vehicles between channels should leave some space dimensions, in order to facilitate loading and unloading operations. General transport vehicles in the span of loading and unloading, should be kept above the door legs with 0.7m spacing. Spreader should not work with the transport vehicles with more than 0.5m spacing, cargo interlude legs, there should be more than 0.5m spacing.

rope hoist safety device - Anti-pull oblique hanging crooked

     Rope hoist is one of the procedures specified "no pull oblique hanging crooked", but in the actual lifting process, due to the construction workers working conditions, work experience or objective conditions caused widespread pulled oblique hanging crooked phenomenon. Once that happens, it is easy to damage the  rope hoist, ranging from making cable,  wire rope   scrapped, while in the whole  rope hoist scrapped or personal injury, resulting in some economic loss, seriously affecting the construction production. At present, none of the design of all  rope hoist lifting device against crooked pulled oblique, so there are significant security risks.
First, the design of anti-pull oblique hanging crooked safety device
      For such problems exist in the work, in practical work designed a pulled oblique hanging crooked can prevent a device, the device is the use of oblique hanging crooked pull rope when a certain deflection angle, so that the  rope hoist mounted on limit switches work, which automatically disconnect lifting contactors, limit lifting capabilities.
      This device not only has anti hanging crooked pull ramp function, but also has a high limit function. The practice of using the operation, the effect is very good, reliability is also high, pulled oblique hanging crooked can prevent the phenomenon.
Second, the structural design
1, the mechanical part
      The device consists of the mechanical part of Shengka @ 15mm, 2 welded assemblies with a stopper components. 1 Shengka is soldered with the balance wheel relative to the center of the arc at the lowest point of the housing (on the  rope hoist), the component l and the stopper is fixed by means of bolts, and the component 2 is fixed to the balance Shengka Round 2 rope (rope under 2 will not change this characteristic spacing), and finally by adjusting the position of a component, making travel limit feeler placed vertically in the center hole assembly 2.
      (A) design principles to be taken into account in any one direction can play a protective function, so in the design of component 2, the center of its design into a round hole, thus making all directions pulled oblique hanging crooked anti-skew angle of the same; You can also use a 360. Within the scope of the work to achieve the limit switch off the action, thereby protecting  Wire rope hoist  from damage.
      Anti pulled oblique hanging crooked setting angle 4. Component 2 is fixed on a wire 5. Anti-travel limit switch contact lever pull oblique hanging crooked size of the angle to be adjusted according to the actual working conditions, For the angle becomes large, there are three methods: the expansion of the central hole assembly 2; the lower sensitivity limit switch; Component 2 will be slightly upwards. To transfer a small need to increase the sensitivity of the limit switch assembly 2 or slightly down shift.
      (2) Work First, according to the actual work situation, set the appropriate skew angle rope, when pulled oblique hanging crooked angle greater than the set value, the skewness of the rope was enough to make the center hole assembly 2 hole edge touches the limit contact bars, cause limit work, cut off  rope hoist lifting contactor control circuit, which play a protective role. Once inside the rope back to the set value, the limit is also touch lever back into place, namely lifting contactor return to work.
2, the electrical part
      c1 is lifting contactors, c2 is decreased contactors. The main circuit is powered, press A1, c1 to work, lifting hook. When hanging crooked pulled oblique angle is greater than the value of the limit switch settings, sT contacts open, c1 contactor to stop working, ie lifting hook to stop time, press A2, c2 can work, then hook only fall not rise, and thus play a protective role.
      The height limit function of the device is in the lifting operation, if failure occurs due to malfunction of firearms off, at which point the driver's thoughts without concentration, did not release the A1, so keep lifting hook. When the hoist hook fast approaching, the time has also been close hook travel limit switch contact bars, resume a lift, it will surely bring feeler shifted or on the roof, causing ST disconnect, C1-off coil along electricity, also stopped lifting hook, played height limit function.
      The device to be tested in practical applications, and the simple, practical, easy to install, low cost, high reliability, energy 360. Played within the scope of protection and off the fire stopper in failure, but also play a height limiter function,  rope hoist play a very good safety results.

Hoist equipment rated capacity

Rated weight  Hoist equipment  during normal operation, allowing the heavy lifting or material with separable or spreader attachment (such as grab, electromagnetic chuck, balance beams, etc.) the total mass in units of t. For variable amplitude lift hoist, electric hoist as tower crane, truck crane, electric hoist, electric hoist gantry crane boom-type lift hoist, etc., with their nominal weight is amplitude variation. Its nominal nominal weight refers to the minimum amplitude when  lift hoist  enhance safe working conditions to allow the maximum rated capacity, also known as maximum weight. To be able to represent several amplitude range from the weight, sometimes used to represent fractions, such as 15/20/50 (nominal weight means that depending on the magnitude divided 15,20,50) three.
Often spoken from the weight, all refer to rated capacity. In order to design, manufacture series of standardization, the State developed a series of standards from the weight, lifting weight lift hoist machinery series see GB GB785-65.

Rope hoist installation method

How to install  Rope hoist , today I mainly on Rope hoist installation method
First, install chain hoist must first install the chain box;
Second, connect the power cord
Connect the power cord must be cut off in advance. Meanwhile ground should be well grounded, otherwise the operator touches any part of the chain hoist or when you are likely to feel a shock feeling.
Third, lubricate chain hoist  load chain
Chain lubrication level is a load chain life is an important factor. Timely and effective lubrication of the load chain, in order to ensure the effective life of the chain.
Fourth, check the chain arrangement
For multi-line chain Rope hoist, the hook should ensure that the next frame will not be overturned. If you flip it back to its normal state, to ensure the chain of weld arranged in rows. Do not twist the chain hoist hanging load.
Finally, check the operating voltage
Since Rope hoist factory, is based on a user-specified voltage or high voltage equipment (only dual voltage terms), such as 230/460V, need to check the wiring and make sure the power supply voltage requirements are met. If not, please refer to the manual must be corrected in order to meet the operating voltage requirements.
Tips:
Install Rope hoist, if improper voltage operation, may cause Rope hoistcausing serious damage. To prevent this from happening, you must ensure wiring meet the required power requirements.

Explosion-proof Rope hoist factory test and exterior painting

According to the specification requirements,Rope hoist factory according JB/T9008.2-2004 " wire rope hoist  test methods" for tensile testing. The main assessment criteria are:
1, with a 500V megger check temperature insulation resistance greater than 1.5MΩ.
2, reducer no oil leakage phenomenon, the operating noise of less than 85 decibels.
3, the dynamic load test: Rated voltage, frequency, 1.25 times more than 5 times the rated load reciprocating movements, and less than 3 times the air starter, stroke less than 2m.
4, the brake down test, according to the national standard lifting speed brake slipped less than 1%. If there is a second brake, the second brake support to be tested load capacity.
5, the buck test: the  Rope hoist  motor inlet voltage is adjusted to 85% of the rated voltage, the load state Airstart less than 3 times, the trip less than 2m.
6, other routine items checked.
Appearance Spray: cleaning (if necessary surface treatment), primer, paint (at least twice a topcoat), dry film thickness of each layer of not less than 25um, the total film thickness of not less than 75um, spraying uniform, bright, color consistent paint adhesion grid method to meet inspection requirements. For special occasions Rope hoist, such as anti-acid, anti-fog, etc. can respond to the requirements of owners.

If you avoid the wire rope hoist Kasheng

Wire rope hoist is stuck is one of the common problems and how to avoid the phenomenon of Wire rope hoist Kasheng it

Electric hoist occur frequently in the course of winding accidents. Especially when the card is in the drum and  lift hoist  the gap between the motor, the process is the only way off the motor, remove the rope. Time-consuming and laborious, but also delay the normal production, sometimes in order to maintain production, will be cut off welding wire rope, wire rope very easy to wear off leaving the drum and the motor housing, resulting in greater equipment accidents.

In response to these problems, through analysis, using a simple method to effectively solve this problem. In the inner plus welding a flange ring, so to prevent rope cards for various reasons the appeal site, without affecting the drum and motor assembly as well as the use of  rope hoist  performance. We are part of the hoist has been improved, with more than a year, the complete elimination of the rope stuck key issue. Production process, even if the phenomenon of chaos rope, because only in the hoist between the shell and the drum, through traction, easy way to increase the load, etc., within a short time you can handle. While maintaining the life of the equipment, without affecting the normal production.

Strengthen the Rope hoist equipment management

In order to effectively control  Hoist equipment  personal injury, you should take the following measures to prevent:
1, strengthening the  Rope hoist  mechanical device employing security management. Strengthen education and training, improve operator safety awareness, safety skills to master, compliance, strict compliance with safety procedures and other safety management system.

2, to enhance the mechanical hoist equipment management. From the design, manufacture, installation, maintenance and other aspects of strict control, timely elimination of hazards, to ensure intrinsically safe equipment, through technical means to improve the degree of intrinsic safety equipment; equipment body meet safety technical requirements, safety accessory devices should be complete and effective.  hoist equipment  for some extended run, overload operation, some safety facilities not associated with the main equipment designed, constructed and put into use conditions, leadership and management departments at all levels should attach great importance to invest the necessary funds to expeditiously implement the rectification, the rectification former should take effective control measures.

3, strengthen the safety management of  Wire rope hoist  equipment. For Wire rope hoist mechanical characteristics, detailed safety rules and regulations, management system, ledger to complete. To implement the responsibility to reflect the "who's in charge, who is responsible," "who use, who is responsible" principle. System provides functional departments departments shall implement management measures to urge workers strictly enforce safety rules and related rules and regulations. For Wire rope hoist, and other special equipment should be regularly organized professional security inspection, investigation equipment problems, the problems identified should be implemented for the responsible units and persons responsible for coming up with feasible deadline for rectification and reform proposals. Functional departments of the rectification of the implementation, feedback and evaluation.

4, to strengthen the safety of field personnel operating process management. Accidents tend to be in a certain part of the job process on mistakes, such as the co-ordination efforts between the different types of defects, especially the lack of effective communication, confirm the work is not in place and other factors. Operation process safety management is in the process of production maintenance operations, through the process elements, the object element, time elements and spatial elements of system control, eliminating that may arise during the operation of the various dangers and harmful factors, to achieve safe production goals The key is to ensure the safety of the whole operation process specification, and reasonable.
Process validation system is to require operators to "judge, determined action" as a fixed mode of thinking, that is, in the course of operations are recognized by a certain way of operating, thus avoiding accidents.

When using wire rope hoist rope should pay attention to the following questions

First, the use of inspection of the  wire rope hoist  products to ensure that its mechanical properties and specifications meet the design requirements;
Second, to ensure adequate safety factor, if necessary, use force to do before the calculation shall be used scrap  Wire rope ;
Third, the use of two ropes to avoid cross laminated by force, to prevent knotting, twisting, bending and draw excessive wear;
Fourth, we should pay attention to reduce wire rope hoist rope bending frequency to avoid reverse bending;
Fifth, not drag unclean place to prevent external factors on the rope for damage, corrosion, making rope performance degradation;
Sixth, maintaining  Rope hoist  rope surfaces clean and good lubrication condition, to strengthen the rope maintenance and repair.

Winter use Wire rope hoist Precautions

Winter should pay attention to the use of Wire rope hoist
In the cold winter construction process, especially in the snow, rope hoist circuit trouble, but rope hoist motor still does not start, because what is it
At this point the basic reason hoist brake ring froze to death because, if this Shihai forcibly boot, it is easy to burn the motor. So do not act rashly, the best solution is to open the motor cover, with a crowbar pry motor so that it can rotate freely can.
Simple operation will be able to extend the service life of  rope hoist .

Explosion-proof rope hoist Product Features

Explosion-proof  rope hoist  mainly by:  lift hoist ，  reducer, drum, drum shell, wire rope, hook block, electric control system, running the car, safety devices and other components. Explosion-proof rope hoist performance in line with GB3836.1-2000 "for explosive gas atmospheres explosion-proof electrical equipment chain hoists" - General requirements and GB3836.2-2000 "for explosive gas atmospheres chain hoists, explosion-proof electrical equipment" - flameproof "d" provisions. Explosion levels "d Ⅱ BT4".
Electric chain hoist products for factory flammable gas, steam and air to form an explosive mixture of gases, combustible dust and other places lifting heavy objects.
Explosion-proof rope hoist models, performance parameters, dimensions, etc. Please refer to the drawings and samples of performance parameters.

An rope hoist lifting motor
Motor operating system to meet the S4, agencies working-level design specifications conform GB/T3811 (M3 ~ M6), general protection class IP54, special requirements may also meet IP55, IP65 (dust proof). Insulation class F. In the motor terminal voltage deviation to ± 10% of nominal voltage, the rope hoist rated load condition, the normal starting and braking. Manufacturing conditions are met JB/T9008.1-2004 standards.
Ambient temperature of -20 ℃ ~ +40 ℃, atmospheric pressure is 0.08 ~ 0.11Mpa, relative humidity 85% (25 ℃), power supply rated voltage is 380V, rated frequency of 50Hz; rated operating cycle of 10min, benchmark continuous electrical connection rate of 25% per hour, equivalent to no more than 120 times the number of starts.

Second, reducer
rope hoist gear is the heart. Its main features are:
1, the main material: Carton box cover is HT200 castings; 04 ~ 08 toothed shaft 20CrMnTi; 09 gears of 40Cr.
2, the process characteristics:
2.1 Case cover shaft hole, plane, coupling hole machining centers used in all automated processing, accurate positioning, high precision, reducing operational impatient tone and prevent leakage plays a key role.
2.2 gear shaft
Blanks: All forging process, effectively changing the material internal organizational structure, improve the impact resistance of parts, abrasion resistance and overload capability.
Tooth axis machining: insert, shaving, quilting, handle pull hoist equipment, high precision machining.
Heat treatment: The company has a normalizing, quenching and tempering, carburizing, local Induction Hardening, salt quench furnace, standard straight, blue, nitrogen and other more advanced technology means. Tooth surface hardness up to speed shaft 62HRC, hardened state requirements, the tooth surface accuracy 8-8-7 grade.

Third, reel, reel housings,  Wire rope   and hook group
Roll: To improve the life of the drum, reducing the user's cost. Because in the long-term use, the rope constant friction, mainly damaged parts of wire rope and rope guide device. Lead rope and wire rope replacement device only 1-2 people an hour can be. And if you have to replace the drum hoist floor will collapse, replacement and then lifting up, spending high cost of materials, time, and more, and to use the lifting tool.
Roll Shell: normal working environment temperature conditions (-20 ~ +40 ℃) when the material is Q235A, when the ambient temperature (-40 ~ -20 ℃)   when the material is 16Mn or Q345.
Rope: Safety factor greater than four times; preferred line contact wire rope, its structure in line with GB/T8918 rope and rope 6 18 * 7 * 37, the nominal tensile strength of not less than 1570MPa.
Hook group: Meet lifting hooks GB/T1005.1 ~ 5-98 standards. M, P grade material DG20, S-grade material DG34CrM, T grade material DG34CrNiM, V grade material DG34CrNi2M, the safety factor is greater than 5 times the nominal weight, forgings forging ratio 1: ≥ 1.5; machined, d4, r10, r11 parts of the surface roughness of 3.2; trapezoidal threaded portion of the surface roughness of 6.3 Yuan, and the remaining 12.5 machined surface roughness; hook smooth surface without cracks, folds, burnt and other defects; no internal cracks. White spots and other inclusions affect the use of security and other defects. Adhere to the batch in the manufacturing process, materials, chemical analysis, periodic impact tests. Prevent the rope hook with anti-decoupling device decoupling. Ensure that the hook in the course of the safety and reliability. In addition, using the hook as an important component of safety, the use of hook should always check the opening degree and other surface defects, such as cracks, wear, 5%, and corrosion.

Fourth, run institutions
Run institutions by the run motor, reducer, siding, wheels (including shaft) components. Teeth in the gear box shaft seal, to adapt the proof and dust-proof environments.
Motor: BZDY series run the motor for the plane part of its braking braking, the braking torque is small, the braking process more slowly, avoiding heavy lifting when you stop shaking.
Reducer: basically the same in this gear, pinion surface hardness up to 62HRC, hardened state requirements, the tooth surface accuracy 8-8-7 grade.
Wheels: G45 forging wheels.
Siding: Material is Q235AQ235B
Running speed is generally 18 ~ 19m/min, other speed requirements should be specified in the contract, double speed with 10:1; 4:1; 3:1; 2 :: 1.

Lifting hoist safety technical inspection content

lift hoist machinery safety inspection in two ways, one is the sensory examination; Another is the use of test equipment, instrumentation opponents pull hoist equipment monitoring and control.

1 sensory examination
Lifting hoist machinery safety technical inspection with inspection personnel through very much to see, hear, smell, and asked, touch to proceed. "Lifting hoist mechanical testing procedures" (2002) No. 296 provided for lifting hoist mechanical testing project is more than 70% of the total project sensory testing. Through the senses of seeing, hearing, smell, and asked, touching on the lifting hoist machinery to conduct a comprehensive and intuitive diagnostics, to obtain the necessary information and data.
See: According lifting hoist through the visual characteristics of the mechanical structure and observe the important transmission parts, load-bearing structural elements, fault source megabytes.
Listen: through the auditory analysis of the lifting hoist chain hoist equipment machinery parts running sound is normal, abnormal sound from parts of the judgment, to understand the cause, find out the source of the disease.
Olfactory: smell resolved through lifting hoist mechanical moving parts on-site odors, to identify components overheating, wear, over-burning position.
Q: Ask the driver and associated personnel lifting hoist operation, failure-prone points, after failure, category. Determination lifting hoist safety and technical conditions.
Touch: By touching lifting hoist moving parts, according to the temperature changes, vibration, determine the fault location and nature of the fault.

2 test equipment inspection
According to domestic and international trends lifting hoist machinery, application of modern condition monitoring and fault diagnosis technology has been in lifting hoist machinery design and use widely. In lifting hoist mechanical operation state, the use of monitoring diagnostic instruments and expert monitoring system for lifting hoist machinery for inspection (monitoring) test, to keep the technical condition of lifting hoist, predictable machine or system failure signs and reasons, to eliminate accidents in the bud.

3 lifting hoist components of general safety check

(1) hook.
Check the hook marks and anti-off device meets the requirements, hook cracks, delamination and other defects; hook wear section, the opening degree of the increase in the amount of torsional deformation is exceeded; hook neck and face without fatigue deformation, cracks and associated pin, sleeve wear.
(2) rope.
Check the  Wire rope  specifications, models and matching reel pulley meets the design requirements. Rope fixed end plate, Shengka, wedge blocks, etc. rope fixtures meet the requirements. Rope wear, broken wires, kinking, flattening, bending, off shares, corrosion, etc. are exceeded.
(3) brake.
Set the brake, the brake of the type meets the design requirements, the brake lever, the spring without fatigue deformation, cracks and other defects; pins, spindles, brake wheel, brake linings for wear exceeded, hydraulic brake oil leaks ; brake gap adjustment, braking capacity can meet the requirements.
(4) roll.
Roll body, tube edge without fatigue cracks, damage, etc.; rope groove and the cylinder wall wear is excessive; reel flange height and rope winding layers can match; guide rope, rope work schedule meets requirements;
(5) the pulley.
Is there a retaining rope pulley groove means; pulley rope groove, rim cracks, broken edges, excessive wear and other conditions, pulley rotation is flexible.
(6) reducer.
Electric hoist reducer running without intense metal friction sound, vibration, radiation and other unusual sound shell; shaft is sealed intact, loose bolts and other conditions have defects; gear lubricant selection, the oil surface height, vertical deceleration Machine oil pump running, open gear lubrication compliance.
(7) wheels.
hoist and trolley tread, axle whether fatigue crack phenomenon axle wheel tread wear is excessive. Are there eating track running phenomenon. Caused by gnawing track what is the reason.
(8) couplings.
Coupling parts without defects, loose connections, run the impact of the phenomenon. Couplings, pin, shaft pin hole, the buffer rubber ring wear is excessive. Coupling and the connection of the two parts are concentric.

4 lifting hoist safety device checks

(1) overload protection device.
Overload protection devices are sensitive and reliable, meet the design requirements, hydraulic overload protection device opening pressure; machinery, electronics and integrated overload protection alarm, cut off the power source set-point integrated error compliance.
(2) torque limiter.
Boom type torque limiter is anti-overload occurs lifting hoist tipping safety device. Weight gain through increased law or sensitive and reliable method for detecting torque limiter and check torque limiter alarm, cut off the power source set-point integrated error is within the specified range.
(3) limit position limiter.
Check the electric hoist equipment luffing mechanism, lifting mechanism, operation mechanism reaches the set position can occur when the distance alarm signal automatically cut off the power source running dangerous direction.
(4) wind devices.
Boom hinge point for the roots of a height greater than 50 m lifting hoist should check the anemometer, wind speed setpoint is reached or when the ability to accurately operating limit speed alarm. Outdoor work in orbit lifting hoist should check rail clamp, iron shoes, anchoring device of the parts are deformed, defects, and the reliability of its work independently. For automatic rail clamp, you should check for sudden wind gusts devices and carts running with the realization of non-anchor brake state windproof function and reliability of the electrical interlock switch function.
(5) after anti-tipping devices.
The boom and luffing jib type crane hoist should check the Anti-tilting device reliability, electrical interlock sensitivity, check the location and magnitude of amplitude indicator indication accuracy.
(6) buffers.
From the weight of different types, running at different speeds lifting hoist, you should check whether the configured buffer matches and check the integrity of the buffer, run to the ends can simultaneously touch the stopper.
(7) protection.
Check the lifting hoist and the various shields, barriers, guards, ladders, etc. are complete, reliable, lifting hoist on the exposed wound may cause wounding, open drive; couplings, sprockets, chains , belts and other rotating parts without protective cover, lifting hoist Exalted walkways, ladders, and may result in the exposed parts without barriers, whether it meets the requirements. Open for lifting hoist electric chain hoist equipment should be located rain cover.

lift hoist operation most undesirable irregularities

(1) with a  lift hoist  lifting or movement of personnel.
(2) lifting flammable, explosive materials and acids.
(3) overload lifting.
(4) using a car hit another car.
(5) from the  Wire rope hoist  heavy objects thrown down.
(6) Non-driver (no operating permit personnel) operating  hoist equipment .

How to properly hoist installation

 After the purchase of  Wire rope hoist  installation and commissioning work is certainly one of the steps to use electric hoist, the installation process is the most important Wire rope hoist if properly installed, then the process will later use to save a lot of time, how we can correct installation and commissioning, explain this to you.

A new installation or after installation by dismantling the hoist should be empty commissioning times. In normal use should be carried out at the rated load of one hundred twenty-five%, up from about 100 mm from the ground, ten minutes of static load test and check whether it is normal. Dynamic load test is based on rated load weight for repeated lifting and move around the test, trial and check the mechanical transmission parts, electrical parts and connecting parts are normal and reliable.
2, installation, commissioning and maintenance must be strictly checked limit device is flexible and reliable, when hook up to the upper limit position, the hook from the shell of the housing to the roll must be greater than 50mm.
3, does not allow press both the Wire rope hoist movement in the opposite direction of flashlight door button.

4,10 to 20 tons hoist in the long-term continuous operation, the automatic power-off phenomenon may occur, which belongs to the motor overheating protection function, then you can drop over a period of time until the motor has cooled down you can continue working.
5, after the work is necessary to supply the total gate opened, cut off the power.
6,  rope hoist  does not work, you can not put heavy objects hanging in the air, to prevent parts produce permanent deformation.
Hoist by hand manipulation, the manipulator should fully grasp the safety rules, non-pulled oblique hanging crooked. Oiled rope should be used when a stiff brush or a small piece of wood is forbidden by hand directly to the working  wire rope  oiled. And Wire rope hoist to regular inspection, repair, maintenance, the equipment is in good condition at all times, prohibited ill job.

For lifting hoist five technical parameters

First, from the weight of G
From the weight lifting heavy objects refers to the mass, in kg or t. Can be divided into nominal weight, maximum weight, total weight, effective from the weight and so on.
1. Nominal weight Gn
Rated weight  lift hoist  can lift spreader or materials with separable attachment (such as grab, electromagnetic chuck, balance beam and other quality combined.
2. Total weight Gz
Total weight of lift hoist can lift spreader and materials can be divided into long-term fixed together in lift hoist on the spreader and drama (including the hook, pulley blocks, lifting wire rope and  hoist and trolley  in the following other lifting objects) of the total mass.
3. Effective from the weight of Gp
Effective from the weight lift hoist can lift the net mass of the material.
This parameter is required as follows:
First, on the plate lift hoist lifting weight calibration, usually refers to the lift hoist the rated capacity should be eye-catching structure represents a significant  lift hoist  position.
Second, the type of lifting hoist boom, its nominal weight is varies with the magnitude of its crane lifting torque characteristic index is used to characterize. Signage on the calibration value is the maximum lifting capacity.
Third, with separable spreader (such as grab, electromagnetic chuck, balance beams, etc.) of the lift hoist  lifting and material quality of their total rated capacity serving to allow lifting the quality of materials is a valid starting weight.
Two, lifting height H
Lifting height is lift hoist orbit top (or ground) to extract the location of the device limit the vertical distance, in units of m. Usually hook, the hook and loop count to hook center; grapple and other containers, count to bottom of the container.
1. Decreased depth h
When the extract device can be placed below the top surface ground or in orbit, its distance is called devolution down depth. Ie spreader minimum working position and lift hoist horizontal vertical distance between the supporting surface.
(2) Lifting range D
Hoisting and lifting height range is decreased depth, ie, the highest and lowest spreader vertical distance between the working position.
Third, the span S
Span bridge type lift hoist means run horizontal distance between the centerline of the track, in units of m.
Bridge-type crane hoist trolley orbit as the distance between the center line of the car gauge.
Ground rail running jib crane hoist orbit as the distance between the center lines of the lift hoist gauge.
Fourth, the magnitude of L
Rotating jib lift hoist means the rotation center line of the amplitude extract unit and the horizontal distance between the vertical line, in units of m. Non-rotating type electric hoist jib crane spreader magnitude refers to the centerline axis of the boom between the rear axle or other typical water level distance.
When the minimum or trolley jib angle position and rotation center distance lifting hoist maximum amplitude of the most significant; vice versa for the minimum amplitude.
Five working speed V
Operating speed is the working body lifting hoist stable operation at rated load speed.
1. Lifting speed Vq
Lifting speed refers to the lifting hoist in steady-state operation, the rated load of the vertical displacement of the speed in m / min.
2. Carts running speed Vk
Carts running speed is the horizontal lifting hoist on road or track running speed with rated load, in units of m / min.
3. Car speed Vt
Car speed refers to the steady state of motion, the car on a level track running speed with rated load, in units of m / min.
4. Change speed V1
Change speed is the steady state of motion, the luffing plane flown minimum rated load, from the most significant to the smallest horizontal displacement amplitude average linear velocity in m / min.
5. Walking speed V.
Walking speed refers to the road condition, mobile lifting hoist rated load hanging the smooth running speed in km / ho
6. Rotation speed ω
Steady rotational speed is the state of motion, lifting hoist rotation around its center of rotation speed in r / min.

Electric chain hoist brake failure how do

Door machine commonly used hydraulic plunger stopper. Directly related to the reliability of the brake and set personal safety, so its reliability requirements are particularly high. However, there is a hydraulic putt put into use more brake failure, fault phenomenon are:
(1)  Rope hoist  motor shaft and the impeller shaft loose coupling between the square after the fall, the hydraulic cylinder idling motor shaft does not move.
(2) The hydraulic brake loose putter putter bending deformation, loose brake is not working place.
(3) Hydraulic brake rod spring break, the brake can not be closed.
(4) The brake frameworks, card live hinge, opening and closing of the brake, slow, or does not operate.
(5)  rope hoist  brake framework activities hinge point bolt loose, brake work is not in place;
(6) brake band, brake wheel badly worn, or loss of braking torque decreases the braking torque.
(7) Hydraulic brake push rod loose the drive motor phase failure, motor and brake release unit does not operate.
The  Wire rope hoist  failure led directly to door lifting mechanism, reduce the reliability of luffing mechanism, especially down the process and increase process Zhidongshiling, seriously endangers the safety, so to improve hoisting mechanism, luffing mechanism brakes Reliability has always been our  Hoist equipment  device management and technology research focus.

Electric hoist tower demolition should pay attention to what

1 Select the installation site
Appropriately selected type  Wire rope hoist  tower under the premise of the installation site selection should be good at following matters: ① first installation to complete the overall project construction, to avoid secondary displacement; ② avoid the construction plane appeared dead; ③ fixed attachment site selection and easy installation; ④ completion of construction hoist tower demolition and convenient transportation; ⑤ construction space to avoid its sub-structures, such as high-voltage grid; ⑥ need help with the installation according to the construction equipment and other  Rope hoist  lifting construction components.

2 Personnel Organization
Tower hoist assembly and disassembly is both important and dangerous and stressful jobs engineering perspective, we must attach great importance to the ideological arguments, from the organization is fully guaranteed. In addition to construction management and with the necessary professional and technical personnel, all construction workers should be subject to professional education, with the appropriate type of work safety knowledge and operating skills, certificates. Construction tower hoist assembly and disassembly by professional construction teams.

3 The management system has been developed
Tower hoist installation and removal is a systematic strong management construction project, my unit based on years of experience and lessons learned to develop a set of relatively complete system speed management measures, from the organization, system is fully guaranteed. For managing all aspects of construction for a more detailed provisions, such as  wire rope hoist  tower foundation acceptance and technical files, installation and removal mission statement, installation and removal security technology correspondent, track inspection records, construction records assembly and disassembly, assembly and disassembly is complete inspection records, Parts inventory records, the use of safety technical tests, etc., that are proven effective.

Proof chain hoists Details

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