Liftech Equipment Manual Hoist works

Liftech Equipment Manual Hoist as an upgraded version of the fixed pulley, fully inherits the advantages of fixed pulley,Manual hoist while using a combination of reverse backstop brake reducer and chain pulley block, the symmetrical arrangement of two spur gears rotating structure, simple, durable and efficient.
Liftech Equipment Manual Hoist hands by pulling the chain, bracelet wheel rotation, the friction plate ratchet,trolley manufacturers brake pressure into one common rotating seat, then the long axis of rotation of sprocket teeth, tooth spline hole short axis and gear. This means lifting sprocket holes on the spline drive gear on lifting chain, thereby lifting heavy objects smoothly. Using one-way ratchet brake friction plate, on their own under load brake pawl engagement with the ratchet under the action of the spring, brake safety.

Ningxia special manual hoist for the first time all year zero accidents zero death

Ningxia News Network ( correspondent Li Li ) in Ningxia in 2007 to carry out special rectification lifting chainb lock based action since special equipment hidden investigation , seven hundred percent goal completed. Up to now , the region is not a serious security incidents over special equipment , not killing one person , the first time the annual Special Equipment Safety zero accidents zero death . It is understood that since last year, manual hoist dispatched inspectors to 4484 passengers, checking units 2029 , 9278 sets of inspection equipment , monitoring directive issued 954 copies of the book , discover hidden equipment 1247 units, 195 units stop running , rectification 1052 units, for investigation Case 81 , a report to the government at all levels major hidden problem 35 times , effectively ensure the safe operation of the region's special equipment . With the rapid economic development of Ningxia , the region's growing number of special equipment . In order to eliminate safety hazards special equipment , special equipment in 2007 hidden investigation and rectification work, Ningxia quality supervision departments at all levels in order to determine the metallurgical industry, lifting machinery , automotive gas cylinders , focusing on monitoring equipment as the key to the implementation of the tripartite responsibility as the starting point , closely linked to grab focus , expand areas , promote the deepening , horizontal deployment , vertical development of work plans , taking corporate self-correction based, county ( city ) Council a comprehensive inspection , investigation and technology institutions , the PUC checks, district Bureau inspector methods , focus areas, seize the key equipment, Dingsi eliminate potential dangers , has launched a special rectification lifting machinery , automotive cylinder special rectification actions. Lifting machinery for the use of units in the region of 1524 units with lifting machinery , and 81 475 sets of metallurgical enterprises lifting machinery examinations were conducted . Since May 18, 2007 began , the region's quality supervision departments at all levels to give up holidays , carried out for a period of seven months of special work cylinder car , taxi and bus companies to the site office , for businesses and users, by law only for five points without qualification modified vehicle safety inspection and the use of gas cylinders registration , supervision coordination 1958 without qualification converted natural gas vehicles for rectification , the establishment of a vehicle cylinders database , the implementation of the dynamic regulatory and administrative penalties and banned, initially established a long-term mechanism to adapt to dynamic regulation of car cylinders , and yielded good results. In addition, there had been an accident , there are security risks rectification in place yet , the foundation is weak , poorly managed , the number of devices and more focused business units focus on monitoring and regulation of major hazard as the focus , the formation of district , city and county ( district ) , security township (neighborhood ) and four companies of special equipment safety supervision and management organization, hiring staff and coordinators of special equipment information and build quality supervision station , eliminate regulatory blind spots , forming a " vertical in the end , transverse to the edge " of special equipment regulatory network , expanding the scope of regulation , supervision tentacles extended to achieve a secure special equipment " early discovery, early control , early treatment, early prevention ." According Ningxia 2008 investigation and management of special equipment hidden embodiment , Ningxia will continue to implement this national production safety committee on safety, " hidden Governance " work requirements , around the " two sessions" , "Olympic " and " Ningxia Hui Autonomous Region was established fifty Daqing "three priorities, in three phases , from special equipment safety management, safety and other aspects of the situation , carry out the region's special equipment hidden danger governance.

Use electric hoist the note

Use electric hoist the note
Electric hoist is good, but when use some noteworthy aspects:
1. When lifting can not sew, tilt manual hoist heavy objects you for your cooperation.
2. When the hoist lifting, it is important to ensure that at least 3 ring steel wire rope, rope cylinder force is too large to prevent the wire rope fell off the rope drum.
3. Regularly check whether the installation of the elevator.
4. Please don't use don't overload the hoist equipment weight lifting objects when using the elevator.
5. The operating personnel please don't in the case of alcohol, medication and illness elevator operation.
6. It is forbidden to anyone standing when hoist lifting heavy objects in lifting the weight of below.
7. To manipulate when the steel wire rope, please wear with thick gloves, please don't let slip from your hand, and wire rope lest cause slippery hurt or injured.
8. The elevator to carry people in any form, or as the elevator promotion tools.
9. Please do not arbitrarily or welding of elevator parts.
10. The micro electric hoist elevator installation position must choose in consistent with the need, and easy operation.

Electric hoist is mainly divided into wire rope electric hoist and chain electric hoist two kinds big

Electric hoist crane when a car and improper operation method, electric hoist can make crane swing accident. Electric hoist crane hoisting, should stop when wire rope or chain taut, electric hoist by direction again for hook, hook shaking while lifting workers chainb lock check whether "hang up; Don't too hard, when the electric hoist lifting when lifting objects from disorder may speed up the lifting; Electric hoist lifting crane content not too high, generally more than safe passage highest 0.5 m as well. Electric hoist crane runtime. Under the conditions allow, the manual hoist hanging from the ground 0.5 m or so, the rigger balance objects from behind electric hoist crane, and under the rigger command to bypass obstacles.
Don't intermittent electric hoist run time, in the long run, the best to run either for a long time as well. Electric hoist at runtime should guarantee the smooth ", if electric hoist crane swing or jitter, should be in the run run while stabilizing hook, not allow it to shake or place. Electric hoist fault occurs is normal, the service life of equipment has its specific problems we think of a solution. Sometimes, the hoist motor voltage is normal, but the gourd is not working, it should be considered for other reasons, such as: motor burned, need to change the motor maintenance. Chain electric hoist long-term need not, poor maintenance of brake wheel and the end cover rust, brake wheel does not open, when starting motor only "hum" sound, turn up, block doesn't work. At this time, should remove brake wheel, cleaning rust on the surface, and test again; Serious motor chamber, also can make the motor does not rotate, found that this kind of situation, should stop to use, must be for repair or replacement motor, to guarantee the normal work of the gourd. In addition, it is forbidden to use electric hoist overload in production, when the goods excessive overload, explosion-proof electric hoist crane didn't move the goods, the motor only thrum "hum", instead of running, serious when burning motor, or even cause an accident, should immediately stop at this moment, to reduce the goods, make the gourd work under rated power.

Light and small hand chain hoist is a kind of Jane inexpensive hoisting tools

Light and small hand chain hoist is a kind of Jane inexpensive hoisting tools, applicable to infrastructure construction, equipment installation, and dockhoist equipment departments such as agriculture, forestry and water conservancy; Can also be matched with manual monorail trolley for lifting the transport, and liquidity operation is more suitable for places where no manual hoist supply. In 1962, our country has designed SH type chain series of drawings, by first machinery industry department order to targets JB56O 64, then on the basis of a large number of products, except for the use of domestic and abroad. But with the development of science and technology constantly in our country, there have been some new material and new process, the performance parameters of the original chain has lagged behind. During the great proletarian cultural revolution movement, through the use of the production practice and user experience, to improve the products constantly, finally we make it become the HS type chain this new series design, its performance parameters have reached the advanced level. One, main parameters and breed new type series chain blocks is called the HS, H represents the gourds, S representative chain group. Series code is made up of model and tonnage, such as HSS said HS type chain blocks 5 tons. New series chain includes four kinds of the body, through the change of sprocket ratio from 0. 5 tons to 20 tons of total n specification. With 0. 5 tons for a single organism, 2 tons of the body can be 1 ton and 2 tons of two specifications.

Metal products mainly produces steel wire

Metal products mainly produces steel wire, steel wire rope production and import and export situation of countries there have been some research and report [1-4], but time is too long, the situation has not been reported in recent years, especially in the import and export of steel wire rope not seen system research reports. According to customs data research major exporter, a major importer of wire rope, import and export quantity and price and quantity and price movements, the development of steel industry in China has a certain reference significance. hoist equipment rope export 1.1 export country constitute the exporter, China is a wire rope export wire rope 699300 t, 2010 here mentioned wire rope is generalized, including steel strand and cord. China's biggest exporter of wire rope is the United States, in 2010, exports to the United States steel wire rope 11.1 40000 t, about 16% of Chinese exports wire rope. South Korea is China's second largest exporter of wire rope, wire rope exports to South Korea 94100 t, 2010 accounted for 14% of China's steel exports. Vietnam, Japan, Canada, India, the united Arab emirates (uae), Singapore is larger wire rope manual hoist in China, in 2010 China's steel export country form as shown in figure 1. 1.2 wire rope export quantity change China's export quantity is big, not only but also large fluctuations.

also known as chip joint chain, lifting chain joints

Chip lifting chain, also known as chip joint chain, lifting hoist equipment joints, etc., it is used for lifting device of the sprocket or smooth on the pulley, and other requirements of compact transmission of low speed and heavy loading. It has the advantage that the welding ring lifting chain, and work is more reliable. With chip lifting chain and sprocket instead of hoisting wire rope and drum, the structure is compact. The downside is the chain weight is bigger, only one-way flexible, not bending tendency, lubrication and maintenance difficulties. Installed in the Buddha mountain manual hoist station of 100 tons 50 tons/double gate door leaf chain hoist type lifting chain structure as shown in figure 1. Chain by a pin shaft, plate, gasket and cotter pin. In order to facilitate the chain of loading and unloading, and chain pin shaft can be made into optical axis, and put in the sleeve. According to the provisions of article 13 of the "product quality standard", "may endanger human body health and personal and property safety of industrial products, must conform to safeguard human health and the national standards, industry standards of personal and property safety; to formulate the national standards, industry standards, must conform to safeguard human health and the requirements of the personal and property safety. May endanger human body health, and personal and property safety of the industrial products, including industrial products may endanger human body health, would endanger the safety of person or property of industrial products, and may endanger human body health and may endanger personal and property safety of industrial products. The so-called" could threaten "in this article, not abnormal use product cases, possible dangerous. Therefore define the product, should consider product may produce an element of danger is under normal use, or cause some dangerous under abnormal use.

Lifting chain type lifting chain

Lifting chain type lifting chain, also known as chip joint chain, lifting chain joints, etc., it is used for lifting device of the sprocket orchainb lock on the pulley, and other requirements of compact transmission of low speed and heavy loading. It has the advantage that the welding ring lifting chain, and work is more reliable. With chip lifting chain and sprocket instead of manual hoist wire rope and drum, the structure is compact. Its disadvantage is that the chain weight is bigger, only one-way flexible, not bending tendency, lubrication and maintenance difficulties. Installed in the Buddha mountain hydropower station of 100 tons 50 tons/double gate door leaf chain hoist type lifting chain structure. The chain consists of pin plate, gasket and cotter pin. In order to facilitate the chain of loading and unloading, and chain pin shaft can be made into optical axis, and put in the sleeve. Chain on the transmission of the friction wheel turned a tooth plate rotating Angle the schematic diagram of figure 2 is a chain. Figure in the drive chain wheel turned a tooth, the location of the plate, the rotation Angle. Chain to the position, the rotation Angle. Sprocket teeth when the driving chain wheel turned two teeth, dynamic sprocket turned a ratio of 2.

Hand gourd it used in structural design and performance

Hand moving hoist used in structural design and manual hoist, it has five characteristics: (1) the use of safe, convenient maintenance; (2) high mechanical efficiency, hand pull small; (3) the lighter weight, easy to carry; (4) beautiful appearance, small size; (5) durability. Daxing coal mine the chain hoist are used in factory maintenance, commonly used the HS series chain hoist adopts symmetrical arrangement of secondary spur gear hoist equipment mechanism, the maintenance, should be no load and overload test, confirm the work can be used in production. Often caused by a lack of detection means, chain blocks with the hidden trouble in production use, repair rate. Therefore, it is necessary to develop a tester, for the maintenance manual hoist loading experiment. 1 process manual hoist tester developed ever implement two kinds of schemes, finally, selected as shown in figure 1 new manual hoist tester, tension meter available directly shows that have been rated lifting weight of the chain hoist. The working principle of tension meter is spring absorption manual hoist external pulling force. After the spring load can produce corresponding deformation, unloading and then can recover

Manual stop block is different from automatic clutch, brake and accelerator

Chain by pulling to move the chain, hand wheel rotation, the friction slice ratchet wheel, brake manual hoist into one common rotation, short and long axis rotation piece of gear, the tooth axis and the spline gear. In this way, the device on the spline gear of lifting chain wheel drives the lifting chain, so as to smoothly promote the weight. Unilateral brake friction ratchet type, can self braking under load, ratchet in spring and ratchet gearing, under the action of the brake safety work. Gourd after cleaning maintenance, should carry on the no-load test, the work is normal, reliable braking, can consign is used. Manual stop block is different from automatic clutch, brake and accelerator to cooperate can stand a good car, than manual stop block driving automatic-shift trival, but also has its own advantages, open often will become adept. Start technique. Different from automatic buffer, buffer started hoist equipment, the left foot on the clutch, hang a, above the vanity with right foot on the accelerator, slow up the clutch brake light step on the gas at the same time, at the same time lets go clutch after left foot on the accelerator slowly up completely, vehicle start smoothly. But when you meet the high starting clutch to be carried to the right, his left foot or the vehicle is in a state of "linkage", then even if the hand brake, loose braking, the vehicle will not slide. Then follow the step on the gas, and slowly lift the clutch, hand brake, the car started.

Chain chain

It is safe and reliable, easy maintenance, manual hoist mechanical efficiency, bracelet pulling force is small, light weight to carry, the characteristics of the small size of beautiful appearance, durable, suitable for factories, mines, construction sites, piers, docks, warehouse, etc. Used for machine chainb lock, lifting goods, especially for the open and no power operation, more show its superiority.

Manual transmission (MT) manual transmission

Manual transmission (MT) manual transmission, also called manual gear box hand toggle shift lever to change gear meshing gear within the transmission, change the transmission ratio, so as to achieve the purpose of speed change. Manual operationchainb lock be more a sense of operation, as well as fun. Cars do. Lifting equipment is made up of improvement slot, vibration motor, vibration isolation system and the base, etc. This series of manual hoistis the vibration motor as vibration source, on the improvement slot with two sets of the same type of the center line of the cross Angle vibration motor installation, and do the opposite direction from the synchronous rotation, vibration motor with eccentric block rotates at every instant position of the centrifugal force generated by the component hoist equipment the casting direction for reciprocating motion, make the bearing on the shock absorber of whole body vibration, the material being thrown up in the improvement slot upward movement at the same time, the material fall into the trough, start being thrown up, this time can make a good contact with raw material and air, also can have the effect of thermal cooling.

Explosion-proof electric hoist details

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.

Common cause of the accident chain hoists summary

Common specifications are  wire rope winch   (0.5t \ 1t \ 2t \ 3t \ 5t \ 10t) six kinds , use, encounter accidents and other dangerous falling objects reasons summarized below want users to abide by the rules in order to ensure the hand pull gourd safe to use.

1 chain hoists lifting weights over from the weight of the provisions ;
2 lifting workers are still working under heavy walking ;
3 Pull the handle pull hoist too high or too low ;
4 horizontal pull the chain hoists or stayed ;
5 on the use of chain hoists lifting chain when bent or kinked still use ;
6 simultaneously with more than one chain hoists lifting a heavy object ;
7 found lifting hand chain pull them , yank or additional personnel ;
8 tossing hoists ;
9 hoists main force component corrosion , cracks, lack of strength or significant plastic deformation ;
10 wire rope or tie optional low base connection method is not correct, then do not tie securely ;
11 wire rope for wear or corrosion ;
12 Main load-bearing parts of the structure is not strong ;
13 lifting weight of ≥ main load-bearing parts of the limit.
Chain hoists performance mutations cause of the accident :
1 opponents pull hoist performance principles ,load chain institutions are not familiar with easily removable ;
2 Install chain hoist brake , the installation is not reliable ;
3 have not been unloaded after maintenance , overloading test that is put into use ;
4 friction surface of the brake oil ;
5 long chain hoists work load ;
6 complex work environment , rubs increase the weight ;
7 used without opponents pull hoist for safe performance measurement ;
8 Use chain hoists can not concentrate , resulting in cards chain , tripping , kink ;
9 Use yank bracelet, mechanical damage ;
10 Rear routine maintenance after use , improper storage .
Personal injury accident consequences chain hoists , equipment, facilities damaged danger dangerous class II level critical preventive measures
1 work should concentrate , to observe , to rational operator ;
2 before each use to make the necessary checks ;
3 chain hoists are complete and secure ;
4 seriously study the working principle of chain hoists and handling precautions ;
5 using chain hoists lifting when setting the necessary precautions around ;
6 immediately after use equipment maintenance , stored in a dry place to prevent moisture rust and corrosion ;
7 do not know who banned performance manual hoist  free disassembly ;
8 brake friction surfaces must be kept clean ;
9 carefully read the instructions for use .

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.

Mini electric hoist correct installation method

1, mini electric  manual hoist  the standard of work is single phase power supply running account, and you must use an outlet with a ground wire.
2, open the packing. Be sure to 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.

3, avoid direct contact with the wire rope and stop frame, otherwise it will lead to the limit switch failure, causing mini electric hoist is not working properly.
4, do not let the mini electric lift hoist  to be exposed to rain or soaked in water, mini electric hoist protection rating of IP54.
5, the use of miniature electric hoist body can not move or rotate along the mounting rod.
6 Warning: Make sure all cables and micro electric hoist on a rotating or hot parts to maintain an appropriate distance.
7, if the mini electric hoist in the state did not fall, roll the last three laps rope coated with red paint can not be released.hoist equipment If continue down switch, wire rope on the rope drum will be rewound to make electric hoist operation upside down on the open, so that the limit switch will lose effect.

Mini electric hoist to meet industrial production requirements

With electric wire rope hoist  performance and increasing the mechanical properties of hard, speed range, speed and high precision, good stability, easy to control and energy-saving features, can well meet the lifting equipment safe and stable, reliable, good and reliable operability , maintenance and other requirements, mini electric hoist has been widely used in industry.
Currently, many electric hoist brands, can fully meet the needs of lifting products industry characteristics are not many, the main difficulty is due to the particularity of the crane, mini electric manual hoist  must have some special properties.
Fast dynamic response, in order to meet the changing needs of the crane load dramatic, ability to control a wide range of speeds, at low speeds can cause the motor around 2 to 3 times the rated output torque of the output peak torque load can withstand dramatic changes due to the potential energy the impact of current occurs, and ensure continuous and reliable operation of mechanical vibration environment, the deceleration of the motor can be reliably released renewable energy, the current capacity of the brake unit as the need for greater, with high reliability protection system,wire rope winch since the l organizations are required to pay special attention to mechanical brake is released before or after the moment of brake to prevent the "slip hook" of the control; possess powerful monitoring system, through the monitoring of implementation of various parameters of the system failure alarm and failure analysis.

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.

Chain lifting mechanism and working principle

chain Block are widely used in industrial and mining enterprises, warehouses, commercial, medical and food service areas, elevator can be installed in the floating beams, curved rails, and fixed lifting heavy objects can also be installed in a cantilever crane rails, workpiece and the machine tool fixtures, etc. lifting heavy objects and so on.
Lifting mechanism by the lifting chain sprocket, chain and chain guide frame device component. Chain of imported and domestic materials are high-strength alloy steel, made by the introduction of advanced equipment chain professional factory steel and heat treated, high strength,wire rope winch good wear resistance.
Electric hoist chain through chain guide device, sprocket engages smoothly and reliably, the chain can be promoted successfully stored in a box set of chains, which have anti-pollution requirements and clean workplace is very suitable, such as hygiene and food service areas.
Sets electric  manual hoist  and chain hoists on the merits, it is powered motor with disc brake, planetary gear reducer, compact structure, small size, light weight, high efficiency, reliable braking, easy maintenance, etc. , versatility, is to improve working conditions, improve labor productivity, ideal for lifting gear.

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.