Explosion-proof electric
rope hoist is our latest design and manufacturing standards of proof lifting equipment, the proof in the form of "flameproof"
Explosion-proof electric hoist, explosion exposed parts of the hoist with a special non-sparking material, explosion safe and reliable performance. Products through the Ministry of Machinery Industry Explosion Protected Electrical Products Quality Supervision and Inspection Center for Explosion Jiamusi sub-center performance testing, and presented proof certificate.
Explosion-proof electric hoist is a small light lifting equipment, explosion-proof electric hoist light weight, small size, lifting capacity, when the plant is filled with an explosive mixture, under the premise of ensuring safety is to improve working conditions, improve labor productivity powerful tool is the production of the necessary equipment.
Explosion-proof electric hoist's internal structure and its effects:
1, tap: electric
manual hoist suitable for grid operation is required, generally have a high-voltage side of the transformer taps, can not fully guarantee tap synchronous switching, so there can not load tap running in parallel.
2, the voltage transformer: primary winding turns N1 much less secondary winding turns N2, equivalent to a step-down transformer. PT at work at the primary and secondary windings are connected in parallel, respectively, in the primary circuit and the secondary voltage control loop coil. Therefore, if the secondary winding is short-circuited, will result in very large secondary current.
3, Used / drawer: Handcart and drawers are high voltage switchgear and low voltage switchgear part,lever hoist were installed high voltage circuit breakers and low voltage circuit breakers and relays and other components. They fixed switch function is basically the same, the main difference is to facilitate the maintenance and repair.
strong electric winch
2013年8月30日星期五
Imports of the unique advantages of chain hoists
Import chain hoists manufacturing technology, excellent function for the domestic market, one of the products imported high-grade
lever hoist has a beautiful appearance, small size, the use of safe and reliable, excellent strength machine; transmission efficiency, hand simple, hand-zipper feel good, to reduce operator's labor intensity and strengths.
Primary mechanical hoists imported high quality steel manufacturing, in the design and use of the function has the following characteristics:
Import chain hoists safe and reliable, durable; American pioneer chain hoists good function, maintenance cumbersome; import chain hoists, small size, light weight, convenient to carry; import manual hoist hand-pull small, high efficiency; American pioneer hand pull hoist construction progress older, beautiful appearance; compact design, steel structure, wear resistance, corrosion resistance and high strength chain hooks fit European safety norms have a unique structure, fine about, appearance and other characteristics, rigid, high strength, compact structure, strengthen anti-collision abilities can usefully maintain internal parts.
Import chain hoists purposes:
Import chain hoist is a simple to use, convenient to carry the manual lifting, chain hoists together for workshops, mines, construction sites, agricultural consumption, and quays, shipyards and warehouses for equipment machinery, lifting, loading and unloading of goods vehicles , a special open and no power on homework,hoist and trolley more of its primary function.
Import chain hoists can be used with all kinds of manual TROLLEYS supporting the use constitutes manual lifting and transport trolley, together for overhead monorail transport, manual single girder overhead cranes and jib crane.
Primary mechanical hoists imported high quality steel manufacturing, in the design and use of the function has the following characteristics:
Import chain hoists safe and reliable, durable; American pioneer chain hoists good function, maintenance cumbersome; import chain hoists, small size, light weight, convenient to carry; import manual hoist hand-pull small, high efficiency; American pioneer hand pull hoist construction progress older, beautiful appearance; compact design, steel structure, wear resistance, corrosion resistance and high strength chain hooks fit European safety norms have a unique structure, fine about, appearance and other characteristics, rigid, high strength, compact structure, strengthen anti-collision abilities can usefully maintain internal parts.
Import chain hoists purposes:
Import chain hoist is a simple to use, convenient to carry the manual lifting, chain hoists together for workshops, mines, construction sites, agricultural consumption, and quays, shipyards and warehouses for equipment machinery, lifting, loading and unloading of goods vehicles , a special open and no power on homework,hoist and trolley more of its primary function.
Import chain hoists can be used with all kinds of manual TROLLEYS supporting the use constitutes manual lifting and transport trolley, together for overhead monorail transport, manual single girder overhead cranes and jib crane.
2013年8月29日星期四
Mini electric hoist motor technology requirements
Motor most lifting equipment is the most important step, mini electric hoist motor is one of the technical requirements of this standard shall comply with the requirements in accordance with prescribed procedures approved manufacturing drawings and technical documents.hoist equipment Motor used under the following operating conditions, should be able to ensure proper operation.
The following details.
1, using the site altitude does not exceed 1000m.
2, the highest place of use of ambient air temperature changes with the seasons, but generally does not exceed 40 ℃.
3, the lowest place of use ambient air temperature is -25 ℃.
4, the wettest month of the monthly mean maximum relative humidity of 90%, while the average minimum temperature in January is not higher than 25 ℃.chain block Motor with class F insulation, when the altitude and the ambient air temperature meet the requirements of 1 and 2, the motor winding temperature rise should not exceed 105K, bearing allowable temperature should not exceed 95 ℃.
Mini electric lever hoist lifting the rated load, the motor terminal voltage is the rated voltage 90%, to ensure that all agencies can work, for conical rotor motor and disc brake motor and a residual magnetic pull. When the three-phase power balance, the three-phase motor load current in any one phase and three-phase average deviation should not exceed ± 10% of the average three-phase motor rated power and rated the reference voltage, the stall torque , respectively, the maximum torque rated torque ratio should not be less than the guaranteed values specified in Table 2.
2013年8月28日星期三
Explosion-proof electric hoist to see trends
With the lifting of the continuous development of the electric
rope hoist increasingly stringent requirements, and in many gourd products which, especially in the explosion-proof electric hoist the most widely used because of its safety performance determines its scope of use. With you to see the domestic electric hoist trends.
Domestic electric hoist is to copy the form from the last century began production and development. July 1949 Beijing General Machinery Plant imitation German first successful trial proof electric hoist, and put into small batch production, 1953 Beijing imitation electric hoist plant trial of the former Soviet Union gourd general purpose proof electric hoist to hoist as lifting mechanism electric single-girder electric lever hoist , since then, the domestic electric hoist equipment to Beijing production plant mimic the former Soviet Union as the earliest single girder truss electric hoist, electric hoist factory in 1957, Beijing and Shanghai electric hoist manufacturers combined production drawings to be modified to produce the latest generation of explosion-proof electric hoist products.
As China's economy continues to develop and progress of science and technology, a new generation of explosion-proof electric gourd endless factory is a research and development design, precision manufacturing,chain block import and export trade, the net sales as one of professional manufacturer of lifting machinery, in the years of electric hoist production of which, we continue to accumulate experience, absorb advanced technology, to create a generation after generation of explosion-proof electric hoist good product.
Electric hoist through the current trends, boldly predicted that in the next few years, explosion-proof hoist equipment electric hoist will be towards a more intelligent and automated direction, its efficiency will be more high quality will be more exquisite.
Domestic electric hoist is to copy the form from the last century began production and development. July 1949 Beijing General Machinery Plant imitation German first successful trial proof electric hoist, and put into small batch production, 1953 Beijing imitation electric hoist plant trial of the former Soviet Union gourd general purpose proof electric hoist to hoist as lifting mechanism electric single-girder electric lever hoist , since then, the domestic electric hoist equipment to Beijing production plant mimic the former Soviet Union as the earliest single girder truss electric hoist, electric hoist factory in 1957, Beijing and Shanghai electric hoist manufacturers combined production drawings to be modified to produce the latest generation of explosion-proof electric hoist products.
As China's economy continues to develop and progress of science and technology, a new generation of explosion-proof electric gourd endless factory is a research and development design, precision manufacturing,chain block import and export trade, the net sales as one of professional manufacturer of lifting machinery, in the years of electric hoist production of which, we continue to accumulate experience, absorb advanced technology, to create a generation after generation of explosion-proof electric hoist good product.
Electric hoist through the current trends, boldly predicted that in the next few years, explosion-proof hoist equipment electric hoist will be towards a more intelligent and automated direction, its efficiency will be more high quality will be more exquisite.
2013年8月26日星期一
Avoid overloading hoists commissioning and corrosion protection
Chain hoists and other lifting equipment, while prohibiting overloading used, but overloading phenomenon still exists, due to overloading caused by the use of lifting incidents have also occurred, in order to avoid overloading
chain block , so to limit the development of the debugger, but the debugger , some matters should pay special attention.
(1) To simplify the debugging process to improve numerical accuracy, debugging using electronic crane, chain hoist in the specification more weights can simplify the configuration;
(2) run-in phase should focus on before the whole assembly, if the conditions can be configured ergometer, positioning device, control system established to reduce the work running test bench strength improve work efficiency;
(3) hoists the load limit load debugging adopted, try to set a different interval, the same specifications used when debugging the load slightly larger slip values;
(4) load limit not a substitute for manual hoist factory debugging dynamic load test, because two persons emphases and different ways, and load requirements are not the same.
Based on the above considerations debugging load limit chain hoists, hoist load limit can greatly improve the accuracy and stability.
Rust-proof chain hoists work is essential, not only affects the overall appearance of the gourd with a great influence on the future use, chain hoists antirust measures described below:
(1) chain hoist hook bearing, to inject calcium-based anti-rust grease to rust.
(2) the various parts of the body lever hoist the machined surface of an exposed table exposed threaded surface, painted barracks or other calcium-based grease rust rust grease.
(3) chain hoists body gear box, gear should be coated with anti-rust grease oil barium sulfate, and shall be regularly inspected corroded and protection. Such as rust, chip or bamboo hardwood hang required to re-rust oil coating.
(1) To simplify the debugging process to improve numerical accuracy, debugging using electronic crane, chain hoist in the specification more weights can simplify the configuration;
(2) run-in phase should focus on before the whole assembly, if the conditions can be configured ergometer, positioning device, control system established to reduce the work running test bench strength improve work efficiency;
(3) hoists the load limit load debugging adopted, try to set a different interval, the same specifications used when debugging the load slightly larger slip values;
(4) load limit not a substitute for manual hoist factory debugging dynamic load test, because two persons emphases and different ways, and load requirements are not the same.
Based on the above considerations debugging load limit chain hoists, hoist load limit can greatly improve the accuracy and stability.
Rust-proof chain hoists work is essential, not only affects the overall appearance of the gourd with a great influence on the future use, chain hoists antirust measures described below:
(1) chain hoist hook bearing, to inject calcium-based anti-rust grease to rust.
(2) the various parts of the body lever hoist the machined surface of an exposed table exposed threaded surface, painted barracks or other calcium-based grease rust rust grease.
(3) chain hoists body gear box, gear should be coated with anti-rust grease oil barium sulfate, and shall be regularly inspected corroded and protection. Such as rust, chip or bamboo hardwood hang required to re-rust oil coating.
What areas need to set up warning signs chain hoists
Chain hoist is small
hoist equipment, lifting machinery used as safety-critical, the following chain hoists to introduce you to the field devices and the use of what needs to set up warning signs.
Chain hoists and stop signs is prohibited under normal circumstances people are not allowed to set up some kind of action, signs, generally use the red flag. Chain hoists device itself required to set this flag places are:
(A) emergency switch;
(2) buffers, sweeping track plate, rail end stops and the rising limit position limiter;
(3) size of the car slide wire, cable reels.
(1) hook pulley side,lever hoist extract device and lifting beam;
(2) chain hoists turn tail and balance weight;
And with the use of a crane hoists the following places also need to have warning signs
(1) jib boom crane jib head;
(2) Crane extended leg and cowcatcher;
(3) In addition to mobile and railway cranes, but with less than 2m from the ground and overhaul of the cab bottom hoists,manual hoist trolleys balance beam and a lower beam on both sides;
(4) The end beam bridge crane outside (it was OK channel) and end surfaces, mobile cab at the interface between the platform and ladder protective railing.
Lifting equipment operators should strictly follow the rules and regulations work equipment has to ensure work safety.
Chain hoists and stop signs is prohibited under normal circumstances people are not allowed to set up some kind of action, signs, generally use the red flag. Chain hoists device itself required to set this flag places are:
(A) emergency switch;
(2) buffers, sweeping track plate, rail end stops and the rising limit position limiter;
(3) size of the car slide wire, cable reels.
(1) hook pulley side,lever hoist extract device and lifting beam;
(2) chain hoists turn tail and balance weight;
And with the use of a crane hoists the following places also need to have warning signs
(1) jib boom crane jib head;
(2) Crane extended leg and cowcatcher;
(3) In addition to mobile and railway cranes, but with less than 2m from the ground and overhaul of the cab bottom hoists,manual hoist trolleys balance beam and a lower beam on both sides;
(4) The end beam bridge crane outside (it was OK channel) and end surfaces, mobile cab at the interface between the platform and ladder protective railing.
Lifting equipment operators should strictly follow the rules and regulations work equipment has to ensure work safety.
2013年8月23日星期五
People often mention electric hoist lifting height is?
Many procurement officers in the inquiry of the product due to electric hoist is not very understanding,rope hoist when the sales staff asked to lifting height and other professional problem is bewildered, and today the purchase of electric hoist often asked questions "electric hoist lifting height What specifically refers to the distance between "doing the following answers for your reference:
Mentioned electric hoist lifting height h,lever hoist in fact, refers to a hook at the bottom of the orbit distance from the lowest point fall, some electric hoist extract device down on the ground or track below the top surface, the interval is called drop its decentralized depth. Then hoist in actual use, shall not exceed the lifting height.
Wire rope electric hoist lifting hook height is the upper limit position and the distance between the lower limit position,chain block and by adjusting the vertical stroke protection off the fire stopper can change the hoist lifting height.
Mentioned electric hoist lifting height h,lever hoist in fact, refers to a hook at the bottom of the orbit distance from the lowest point fall, some electric hoist extract device down on the ground or track below the top surface, the interval is called drop its decentralized depth. Then hoist in actual use, shall not exceed the lifting height.
Wire rope electric hoist lifting hook height is the upper limit position and the distance between the lower limit position,chain block and by adjusting the vertical stroke protection off the fire stopper can change the hoist lifting height.
2013年8月21日星期三
How to check the hoist contactor
Contacts play a controlling role in the whole electric hoist work play a very important role in our daily work should pay attention to check the contacts section.
1, the contact with copper drops grotto file level contacts polished,manual hoist mechanical strength enough or overtravel reach the required value, replaced with new contacts.
2, to maintain the thread does not burn pine, screws tight weeks, the insulation to keep clean.
3, the contacts of the contactor contact width should be greater than 3/4.
4, arc cover intact, no card contacts, arc suppression coil is not shorted.
5, the contact should be kept open enough distance and overtravel.
6, a contact that is connected to the contact while the deviation does not exceed 0.5mm.
7, requires electric hoist contactor operation light and flexible,lever hoist bearings need regular lubrication.
8, anyway, turn contactor mechanical interlock should be adjusted appropriately when a contactor contact will be contacted, another contactor contacts is not closed, the gap is not less than 3mm.
9, electric hoist contactor magnet contact area should be greater than 75%, the contactor magnet can not skew can not be jamming, manual block and the magnet surface should be kept clean.
1, the contact with copper drops grotto file level contacts polished,manual hoist mechanical strength enough or overtravel reach the required value, replaced with new contacts.
2, to maintain the thread does not burn pine, screws tight weeks, the insulation to keep clean.
3, the contacts of the contactor contact width should be greater than 3/4.
4, arc cover intact, no card contacts, arc suppression coil is not shorted.
5, the contact should be kept open enough distance and overtravel.
6, a contact that is connected to the contact while the deviation does not exceed 0.5mm.
7, requires electric hoist contactor operation light and flexible,lever hoist bearings need regular lubrication.
8, anyway, turn contactor mechanical interlock should be adjusted appropriately when a contactor contact will be contacted, another contactor contacts is not closed, the gap is not less than 3mm.
9, electric hoist contactor magnet contact area should be greater than 75%, the contactor magnet can not skew can not be jamming, manual block and the magnet surface should be kept clean.
How to select the right chain hoists
In recent years, low-quality
chain Block gradually increased, mainly due to the number of small enterprises in order to reduce costs, thereby reducing the production of investment goods, most chain hoists accessories are used with external processing or production chain hoists used equipment parts assembled, reduced parts of the standard size, material, lifting chain welding surface treatment, low-cost chain hoists to be produced without any guarantee of quality, of course.
Remind you to buy before the manual hoist must check the packaging, production date, gourd material degree and product shelf life and so on. The contract must be signed by both parties save. Here's how to select the right chain hoists, for your reference:
1, in normal use, the hand chain hoists chain will be stuck.
2, the normal use chain hoists lifting heavy objects will appear downturn.
3, the use of chain hoists lifting heavy objects can not only occur when the next situation.
4, when the upper and lower hook plates,lever hoist severe deformation does not work, can not guarantee things will not be hanging slip hook.
5, in the safe use of load chain hoists, chains, hooks and other load bearing parts may deform or crack and so on.
Remind you to buy before the manual hoist must check the packaging, production date, gourd material degree and product shelf life and so on. The contract must be signed by both parties save. Here's how to select the right chain hoists, for your reference:
1, in normal use, the hand chain hoists chain will be stuck.
2, the normal use chain hoists lifting heavy objects will appear downturn.
3, the use of chain hoists lifting heavy objects can not only occur when the next situation.
4, when the upper and lower hook plates,lever hoist severe deformation does not work, can not guarantee things will not be hanging slip hook.
5, in the safe use of load chain hoists, chains, hooks and other load bearing parts may deform or crack and so on.
2013年8月19日星期一
Electric hoist load sway control method
Electric hoist lifting equipment in the most common, most electric
rope hoist used by people to follow the control button on the ground, or can be manipulated or used in the driver room wired (wireless) remote control. Use, the absolute prohibition does not allow circumstances, and exceeds the rated load and nominal hourly closing times (120 times) use case, should not be overloaded with the following summary hoist load sway control method for reference:
Electric hoist load sway control method:
Load if shaking, shaking the more powerful, the more difficult the operation of the car will be a security risk, in principle, to make the load lateral shake, so the use of electric hoist, please follow the following operations;
a. Do not stayed
b. slowly start to the lateral movement
c. Do not dramatic lifting loads
Starting and stopping the lever hoist electric chain hoist lateral movement, even if compliance with the above operation, lifting loads but also how much will be shaking.
At this point, if the following operations will be able to reduce the lifting load sway.
1) Press the traverse key "figure a"
2) the car begins to move, the load will be slightly delayed "in graph b"
3) the load before going to swing to a central location, close keypress
4) When the load chain lift hoist back just below when the switch is pressed again, "drawing c", so that lateral movement in this state.
Electric hoist load sway control method:
Load if shaking, shaking the more powerful, the more difficult the operation of the car will be a security risk, in principle, to make the load lateral shake, so the use of electric hoist, please follow the following operations;
a. Do not stayed
b. slowly start to the lateral movement
c. Do not dramatic lifting loads
Starting and stopping the lever hoist electric chain hoist lateral movement, even if compliance with the above operation, lifting loads but also how much will be shaking.
At this point, if the following operations will be able to reduce the lifting load sway.
1) Press the traverse key "figure a"
2) the car begins to move, the load will be slightly delayed "in graph b"
3) the load before going to swing to a central location, close keypress
4) When the load chain lift hoist back just below when the switch is pressed again, "drawing c", so that lateral movement in this state.
Fracture Analysis sling occur
Lifting sling is lifting, handling operations an important auxiliary tool, which includes wire slings, straps, hooks, steel clamp and so on. Sling with a wide variety of complex use of the environment, the use of large and uneven quality of personnel, risk factors,hoist and trolley and more, great harm. If used improperly or mismanagement, prone to accidents.
For some companies in recent years fracture accident occurred in a sling, combined with years of safety management practice, sling rupture causes a careful analysis, and proposed preventive measures to ensure the safe use of a sling.
1. Sling manufacturing irregularities
Currently, companies use the sling into professional factory production and business homemade two parts. Sling professional manufacturer of the product quality, but off is the cause of the accident is an important reason. Some sling manufacturers do not follow the national standard production and testing products. Such as: 1999 factory bought 8 rated load 10 tons of Circular Welded chain, which has a sudden break in use. After examination, the chain breaks open welding seam obvious, belonging to neither certification nor the inspection mark and quality grade mark of the "three no" products.
Some companies buy sling out, it is also full use of their existing equipment and human resources, their processing and the production of some number of single process is simple sling. Enterprise homemade sling, its randomness and blindness larger in the selection, to determine the size and production methods, often depending on their experience,chain block manufacturing quality and safety performance is difficult to achieve the requirements. Such as: a workshop in 2000 forged a two tons of small hooks, With no national standard DG series steel (using ordinary 45 # steel) manufacture, in use, the hook was straightened, hanging objects falling, almost led to casualties.
2. Sling using the low quality of personnel security technology, poor safety awareness
Sling using technical quality and safety of personnel security awareness is not strong, not only affects the quality of the lifting operation, but also directly related to the user's personal safety. Its performance are the following, first, use of personnel safety consciousness. In the production process, some sling use of personnel emphasis on production safety, to grab the progress, time duration, simplify operating procedures, or even illegal dangerous operations and stuffed hair accidents. Second, some of the safety technology used low quality, they do not understand the basic performance sling and use requirements, but do not know how to calculate the center of gravity and determining hanging objects hanging method, so that in the specific operation, arbitrary, can lifting safety can not be guaranteed, then completely rely on hit "Grand Canal."
3. Sling has not been included in the safety management of normal channels, extensive management
Currently, sling safety management, the State has not developed a standardized management standards, companies are lack of appropriate safety management system, resulting in a sling safety management in a loose state. On the use of units (enterprises) in terms of a sling into use, by what sector management, long test time and by whom checks,lever hoist to what standard to be repaired or scrapped, which are impossible to implement. Resulting not timely detect and eliminate hidden dangers exist sling, sling so that part of the long-term "sick running" until an accident. Furthermore, the production plant or process is concerned, no one managed to implement fixed, fixed storage. Who is who take, littering after use, which makes the sling greatly increased chance of breakage.
In addition, lifting the driver to improper operation, lifting up the stopper is caused sling failures and other fracture is an important reason.
For some companies in recent years fracture accident occurred in a sling, combined with years of safety management practice, sling rupture causes a careful analysis, and proposed preventive measures to ensure the safe use of a sling.
1. Sling manufacturing irregularities
Currently, companies use the sling into professional factory production and business homemade two parts. Sling professional manufacturer of the product quality, but off is the cause of the accident is an important reason. Some sling manufacturers do not follow the national standard production and testing products. Such as: 1999 factory bought 8 rated load 10 tons of Circular Welded chain, which has a sudden break in use. After examination, the chain breaks open welding seam obvious, belonging to neither certification nor the inspection mark and quality grade mark of the "three no" products.
Some companies buy sling out, it is also full use of their existing equipment and human resources, their processing and the production of some number of single process is simple sling. Enterprise homemade sling, its randomness and blindness larger in the selection, to determine the size and production methods, often depending on their experience,chain block manufacturing quality and safety performance is difficult to achieve the requirements. Such as: a workshop in 2000 forged a two tons of small hooks, With no national standard DG series steel (using ordinary 45 # steel) manufacture, in use, the hook was straightened, hanging objects falling, almost led to casualties.
2. Sling using the low quality of personnel security technology, poor safety awareness
Sling using technical quality and safety of personnel security awareness is not strong, not only affects the quality of the lifting operation, but also directly related to the user's personal safety. Its performance are the following, first, use of personnel safety consciousness. In the production process, some sling use of personnel emphasis on production safety, to grab the progress, time duration, simplify operating procedures, or even illegal dangerous operations and stuffed hair accidents. Second, some of the safety technology used low quality, they do not understand the basic performance sling and use requirements, but do not know how to calculate the center of gravity and determining hanging objects hanging method, so that in the specific operation, arbitrary, can lifting safety can not be guaranteed, then completely rely on hit "Grand Canal."
3. Sling has not been included in the safety management of normal channels, extensive management
Currently, sling safety management, the State has not developed a standardized management standards, companies are lack of appropriate safety management system, resulting in a sling safety management in a loose state. On the use of units (enterprises) in terms of a sling into use, by what sector management, long test time and by whom checks,lever hoist to what standard to be repaired or scrapped, which are impossible to implement. Resulting not timely detect and eliminate hidden dangers exist sling, sling so that part of the long-term "sick running" until an accident. Furthermore, the production plant or process is concerned, no one managed to implement fixed, fixed storage. Who is who take, littering after use, which makes the sling greatly increased chance of breakage.
In addition, lifting the driver to improper operation, lifting up the stopper is caused sling failures and other fracture is an important reason.
2013年8月16日星期五
How to repair and fix because of power outages caused by the failure to hoist
General electric hoist is a lot of construction machinery will be used, but even the best machines will have trouble, when, where mainly solve recurring failures such as power outages. Mainly because of power outages did not hoist the rated working voltage is turned, unable to work,manual block the reason there is a solution with the power supply system is not right to send electric power electric hoist, hoist the main, the control circuit of electrical damage, the line is disconnected or bad , such a situation, the need to repair the main, the control circuit, be sure to hoist the motor is disconnected from the power line, when the confirmation Lord, control circuit trouble, before re-commissioning; hoist motor starting torque is too small, so hoist lifting not moving goods, and can not work, check with a multimeter or voltage meter and other measuring motor input voltage, indeed due to low voltage,load chain so that the motor can not be started, the need to restore the normal system voltage, etc. before using electric hoist. Do not overload the production of an electric hoist, when the goods are excessively overloaded, do not move cargo crane hoist motor only make noise, but not running, and in severe burning motor, or even cause an accident, then should immediately stop using the hoist in the lifting process occurred broken teeth, broken shaft brake failure occurs, conventional electric hoist can not play a protective role in the accident consequences will be disastrous. Load protection overload protection is common, for some special circumstances, requiring electric hoist crane being lifted can not occur on the rail car stuck or broken rope or fixed rope off phenomenon,lever hoist it requires a super electric hoist, underrun protection. Electric hoist overspeed protection is also necessary, when the electric hoist conical surface and the second brake brake brake surface wear or planar grid voltage fluctuation, set in the high-speed shaft speed sensor will cut off the main power from the electric hoist to the protective effect.
2013年8月14日星期三
Using block and tackle and groups which inject public matters?
A pulley and pulley block used, they should pay attention to the following aspects:
(A) from the weight of the hoist equipment generally marked on the nameplate in tackles jacket, non-overload. Pulley for lifting weight is unknown should not be used.
(2) multi-block from the weight of the door, is worried by the door cars are fine, and if only one part of the pulley, lifting capacity corresponding decline proportionately. If 50t5 door pulley, when only three when lifting weight of 30t,
(3) should always check the pulleys, hooks, rings of rotation is flexible, loose screws and pulley groove axis, plywood, clapboard and a hook and other parts for cracks or other damage, once problems are strictly prohibited .
(4) wear around good rope pulley,lever hoist you should tighten the rope slowly afterburner trial hanging, hanging in the trial to check the work of tackles, with or without Kasheng, grinding rope, off the ropes and rope friction between places, found between title should be timely adjusted.
(5) selection of tackle, to consider the pulley diameter, round bottom width, and the ratio between the rope diameter. General rope diameter pulley diameter should be 16 ^ -20 times the width should be larger than the bottom rope diameter 1-5mm,
(6) large changes in force or high-altitude operations, should not be used hook block, pulley rings should be used to prevent accidents caused by decoupling.
(7) when lifting heavy equipment,hoist and trolley should be preferred pair ran head along worn.
(8) is lifting weights rose to the highest point, the total length of rope around the drum is less than the capacity of towing equipment. And given the distance between the pulley and the movable pulley should be more than safe distance while the rope rope groove angle is not greater than 40-60,
(9) Put pulley to keep the clean,chain block lubricate moving parts regularly. After each operation, you should tackle cleaned, stored in dry warehouse shelves, to prevent corrosion.
(A) from the weight of the hoist equipment generally marked on the nameplate in tackles jacket, non-overload. Pulley for lifting weight is unknown should not be used.
(2) multi-block from the weight of the door, is worried by the door cars are fine, and if only one part of the pulley, lifting capacity corresponding decline proportionately. If 50t5 door pulley, when only three when lifting weight of 30t,
(3) should always check the pulleys, hooks, rings of rotation is flexible, loose screws and pulley groove axis, plywood, clapboard and a hook and other parts for cracks or other damage, once problems are strictly prohibited .
(4) wear around good rope pulley,lever hoist you should tighten the rope slowly afterburner trial hanging, hanging in the trial to check the work of tackles, with or without Kasheng, grinding rope, off the ropes and rope friction between places, found between title should be timely adjusted.
(5) selection of tackle, to consider the pulley diameter, round bottom width, and the ratio between the rope diameter. General rope diameter pulley diameter should be 16 ^ -20 times the width should be larger than the bottom rope diameter 1-5mm,
(6) large changes in force or high-altitude operations, should not be used hook block, pulley rings should be used to prevent accidents caused by decoupling.
(7) when lifting heavy equipment,hoist and trolley should be preferred pair ran head along worn.
(8) is lifting weights rose to the highest point, the total length of rope around the drum is less than the capacity of towing equipment. And given the distance between the pulley and the movable pulley should be more than safe distance while the rope rope groove angle is not greater than 40-60,
(9) Put pulley to keep the clean,chain block lubricate moving parts regularly. After each operation, you should tackle cleaned, stored in dry warehouse shelves, to prevent corrosion.
2013年8月12日星期一
For tight line with the ten-point instructions Precautions
1 Use only the tensioner is not broken,manual hoist the label can clearly demonstrate capability.
(2) can not overload use.
3 Do not use the ribbon knot.
4. Use, please try to keep the fabric away from sharp edges and corners,lever hoist from abrasion or cutting.
5 Avoid twisting, twisted arrangement tensioner.
6 Do not place objects on the tensioner, so as not cause injury.
7 Do not adjust tensioner used as load lifting.
8, estimated using the thickness of the wire,load chain with the corresponding specifications of the tightener.
9, in the mouth with a flat-type tightening should be fastened tight line pawl and ratchet pawl disengaged to prevent slipping.
10, found when using a slip line (escape line), should immediately stop using it and to take measures (such as the wire plus a pad material), once again clamped firmly clamp the wire is indeed only after continued use.
(2) can not overload use.
3 Do not use the ribbon knot.
4. Use, please try to keep the fabric away from sharp edges and corners,lever hoist from abrasion or cutting.
5 Avoid twisting, twisted arrangement tensioner.
6 Do not place objects on the tensioner, so as not cause injury.
7 Do not adjust tensioner used as load lifting.
8, estimated using the thickness of the wire,load chain with the corresponding specifications of the tightener.
9, in the mouth with a flat-type tightening should be fastened tight line pawl and ratchet pawl disengaged to prevent slipping.
10, found when using a slip line (escape line), should immediately stop using it and to take measures (such as the wire plus a pad material), once again clamped firmly clamp the wire is indeed only after continued use.
When using the winch 15:00 Precautions
1, when using the hoist rope must not tie a knot, twisting around in a pitch of more than 10% broken and should be replaced.
2, wire rope on the drum should be arranged in neat rows, if found overlap and ramps around, you should stop rearranged. Prohibited in turn by hand, foot rope pulling foot. Rope allowed to completely release, should be retained at least three times.
3, winch operation, no person shall leap rope, objects (object) upgrade, the operator shall not leave the Hoist equipment Objects at rest or cage should be lowered to the ground.
4, operation, drivers, signalers to lift objects with good visibility, the driver and signalman should cooperate closely to obey signals unified command.
5, the job is completed, you should feed pan floor, lock electrical box.
6, work to obey the command of officers signal, the signal is unknown or is likely to cause an accident should be suspended operations until clarify the situation before continuing.
7, the operation in case of power failure,lift hoist should cut off the power to the ground will improve things.
8, the job of a sudden power outage, you should immediately pull the knife, will ship things down.
9, the job is completed, you should feed pan floor, lock electrical box.
10, in the course of rope and mechanical wear. Spontaneous local corrosion damage is inevitable, should be an interval time brushing protective oil.
11, using the process appears to be careful not to tie. Squashed. Arcing wounded. Chemical erosion of media.
12, lever hoist s Do not overload use.
13, using the process appears to be careful not to tie. Squashed. Arcing wounded. Chemical erosion of media.
14 may not be directly lifting hot objects, objects for angular to add shield.
15, using the process should always check the rope used to achieve the standards should be scrapped immediately scrapped.
2, wire rope on the drum should be arranged in neat rows, if found overlap and ramps around, you should stop rearranged. Prohibited in turn by hand, foot rope pulling foot. Rope allowed to completely release, should be retained at least three times.
3, winch operation, no person shall leap rope, objects (object) upgrade, the operator shall not leave the Hoist equipment Objects at rest or cage should be lowered to the ground.
4, operation, drivers, signalers to lift objects with good visibility, the driver and signalman should cooperate closely to obey signals unified command.
5, the job is completed, you should feed pan floor, lock electrical box.
6, work to obey the command of officers signal, the signal is unknown or is likely to cause an accident should be suspended operations until clarify the situation before continuing.
7, the operation in case of power failure,lift hoist should cut off the power to the ground will improve things.
8, the job of a sudden power outage, you should immediately pull the knife, will ship things down.
9, the job is completed, you should feed pan floor, lock electrical box.
10, in the course of rope and mechanical wear. Spontaneous local corrosion damage is inevitable, should be an interval time brushing protective oil.
11, using the process appears to be careful not to tie. Squashed. Arcing wounded. Chemical erosion of media.
12, lever hoist s Do not overload use.
13, using the process appears to be careful not to tie. Squashed. Arcing wounded. Chemical erosion of media.
14 may not be directly lifting hot objects, objects for angular to add shield.
15, using the process should always check the rope used to achieve the standards should be scrapped immediately scrapped.
2013年8月9日星期五
Group hanging electric hoist performance of each component
The following detailed description of your group hanging electric hoist each part performance.
1, lifting chain: Φ7.1mm and Φ11.2mm 80 Class A surface hardening lifting chain, to ensure their safety and durability. Lifting chains tough surfaces can prevent product damage and softening of the core material, so that the lifting chain, long-term performance.
Group hanging electric Wire rope hoist chain of low-carbon steel, the chain is more resilient, and more rugged wear at work to ensure the safety. Electric chain hoist can also be customized according to customer requirements lengthened, allowing you to use more convenient worry.
2, dual brake system: two complete and independent of braking system not only reduces the possibility of brake failure, also enhances braking safety and conducive to heat.
3, the electromagnetic brake: new brake system react quickly, and provides a positive braking force. Use of non-asbestos brake linings greatly extend the maintenance cycle. Brake system has been tested more than 22,500 times.
4, the mechanical brakes: very reliable mechanical brake with electromagnetic brake coordination role and can turn at any time to stop the machine.
5, the transmission gear:lever hoist standard chain hoist generally use helical gears provide reliability and through minimizing gear meshing impact and vibration prolongs life. The special design of the gear enhanced durability of the gear, and the gear is made from the alloy, after the heat treatment to obtain the fine professional maximum strength.
6, oil bath lubrication: Gearbox oil bath lubrication system using MODE.chainb lock Gears with oil bath lubrication system for mechanical brakes with cooling agent.
7, the relay: Relay can protect the power cord connection error (reverse link) the damage caused on the hoist.
1, lifting chain: Φ7.1mm and Φ11.2mm 80 Class A surface hardening lifting chain, to ensure their safety and durability. Lifting chains tough surfaces can prevent product damage and softening of the core material, so that the lifting chain, long-term performance.
Group hanging electric Wire rope hoist chain of low-carbon steel, the chain is more resilient, and more rugged wear at work to ensure the safety. Electric chain hoist can also be customized according to customer requirements lengthened, allowing you to use more convenient worry.
2, dual brake system: two complete and independent of braking system not only reduces the possibility of brake failure, also enhances braking safety and conducive to heat.
3, the electromagnetic brake: new brake system react quickly, and provides a positive braking force. Use of non-asbestos brake linings greatly extend the maintenance cycle. Brake system has been tested more than 22,500 times.
4, the mechanical brakes: very reliable mechanical brake with electromagnetic brake coordination role and can turn at any time to stop the machine.
5, the transmission gear:lever hoist standard chain hoist generally use helical gears provide reliability and through minimizing gear meshing impact and vibration prolongs life. The special design of the gear enhanced durability of the gear, and the gear is made from the alloy, after the heat treatment to obtain the fine professional maximum strength.
6, oil bath lubrication: Gearbox oil bath lubrication system using MODE.chainb lock Gears with oil bath lubrication system for mechanical brakes with cooling agent.
7, the relay: Relay can protect the power cord connection error (reverse link) the damage caused on the hoist.
Group hanging electric hoist operation guide
Group hanging electric hoist lifting when subjected to the following irresistible external influences, there will be loads shake situation. The group hanging electric hoist load sway people and things will be a series of bumps, the load falls and other accidents, and will affect the group hanging electric
chainb lock trolley running.
Do not lifting loads near the end of the beam side of the state to run. Lifting loads shake or fall will encounter people and things, may result in death or serious injury. Load if shaking, shaking the more powerful, the more difficult the operation of the car, accompanied by danger. In principle, to make the load lateral shake. Therefore, please observe the following.
1, not stayed
2, you need to move laterally, try to slow down, the slow running;
3, do not dramatic lifting loads
4, Do not lifting loads at the side of the state near the end of the beam to run;
Factors because of inertia in starting and stopping traversing the lever hoist even if the strict compliance with the operation, the load will vary shaking, proposed as follows.
1: Press the lateral movement by one: key "figure a", run the car begins to move, the load will be slightly delayed "Figure b"
2: In the load before going to swing to a central location, close button once;
3: When the load back to group hanging just below the hoist when the button is pressed again, "drawing c", so that lateral movement in this state.
Starting and stopping group hanging electric hoist lateral movement, even to comply with the above operation,Hoist and trolley lifting loads but also how much will be shaking. At this point, if the following operations will be able to reduce the lifting load sway.
Do not lifting loads near the end of the beam side of the state to run. Lifting loads shake or fall will encounter people and things, may result in death or serious injury. Load if shaking, shaking the more powerful, the more difficult the operation of the car, accompanied by danger. In principle, to make the load lateral shake. Therefore, please observe the following.
1, not stayed
2, you need to move laterally, try to slow down, the slow running;
3, do not dramatic lifting loads
4, Do not lifting loads at the side of the state near the end of the beam to run;
Factors because of inertia in starting and stopping traversing the lever hoist even if the strict compliance with the operation, the load will vary shaking, proposed as follows.
1: Press the lateral movement by one: key "figure a", run the car begins to move, the load will be slightly delayed "Figure b"
2: In the load before going to swing to a central location, close button once;
3: When the load back to group hanging just below the hoist when the button is pressed again, "drawing c", so that lateral movement in this state.
Starting and stopping group hanging electric hoist lateral movement, even to comply with the above operation,Hoist and trolley lifting loads but also how much will be shaking. At this point, if the following operations will be able to reduce the lifting load sway.
2013年8月7日星期三
Household mini electric hoist on the retaining device
1, the overall use of anti-off device is about 5mm steel plate welded to ensure adequate rigidity,Manual block difficult destruction, as well as card-bit capabilities to ensure good strength.
2, retention spring return function, but in the whole anti-off is designed to consider the use of springs and spring force so that the center of gravity because of greater weight reduction after the request of the spring, the spring is very easy to make anti-off device is reset, closure,hoist and trolley to ensure operational flexibility.
3, anti-off devices on both sides of widening and extending to the hook body, leaving a gap of 1mm, the use of ontology card, limiting the scope of the retaining device and move around, on the basis of sufficient strength so that it can not be the slot.
4, anti-off device at the maximum range of motion trajectory to ensure adequate open space, so that the hook spreader activities within the range, and with the scope of activities of the retaining device interference,lever hoist so as not to interfere with the rope hanging take work.
5, the operation flexible and reliable, spring installation easier.
6, versatile, easy to make, easy operation, low cost, high reliability, difficult to damage.
7, due to the overall strength, increase reliability depression, difficult damage, so the pin with a diameter of 5mm on the rivet, the person operating the artificial removal. Because different dimensions 2T hook still have subtle differences
2013年8月2日星期五
Wire rope, chain lever hoist maintenance
Wire rope hoist hook with the fixture securely fixed, the chain was hanging heavy hook and reliably linked together, pull the knob to position cards "up", reciprocating lever handle, with the handle the reciprocating lever, weight will steadily rise. Turn the knob to sign "down" position, the reciprocating lever, heavy and smooth it with the handle pulled down, bringing the lever hoist will complete the entire operation, the following to introduce you to the wire rope and chain
lever hoist maintenance maintenance of main content.
Chain lever hoist maintenance measures
1, lever hoist should be finished using the dust on, wipe grease and store in a dry place, avoid moisture and corrosion.
2, based on usage, cleaning parts with kerosene per year 1-2 times; gears and bearings in part, plus Huangyou Run slippery.
Wire rope pulling lift hoist maintenance measures
1, each job is completed, we must first wipe the loose end of the rope on the adhesion of mud, dust or grease, loosen the jaw, out of wire rope, wire rope sequence will gather around the shelves, and wipe the length of wire rope, wire rope stored in dry place to prevent corrosion.
2 year deal lever hoist at least four times a maintenance treatment, such as diesel cleaning parts, and calcium-based grease lubrication.
3, when the internal movement poured into the mud, cement or other dirt, use a rinse, then clean diesel; cleaning, dry calcium-based grease on the grease; finally release the jaws, wipe with a clean cotton pliers mouth of grease and moisture.
4, when the jaws wear, carrying capacity is less than 80% of rated load, replace the jaw, when wire rope diameter is reduced 10%, the rope should be replaced.
Chain lever hoist maintenance measures
1, lever hoist should be finished using the dust on, wipe grease and store in a dry place, avoid moisture and corrosion.
2, based on usage, cleaning parts with kerosene per year 1-2 times; gears and bearings in part, plus Huangyou Run slippery.
Wire rope pulling lift hoist maintenance measures
1, each job is completed, we must first wipe the loose end of the rope on the adhesion of mud, dust or grease, loosen the jaw, out of wire rope, wire rope sequence will gather around the shelves, and wipe the length of wire rope, wire rope stored in dry place to prevent corrosion.
2 year deal lever hoist at least four times a maintenance treatment, such as diesel cleaning parts, and calcium-based grease lubrication.
3, when the internal movement poured into the mud, cement or other dirt, use a rinse, then clean diesel; cleaning, dry calcium-based grease on the grease; finally release the jaws, wipe with a clean cotton pliers mouth of grease and moisture.
4, when the jaws wear, carrying capacity is less than 80% of rated load, replace the jaw, when wire rope diameter is reduced 10%, the rope should be replaced.
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