What is the safety management system for the use of chain rigging?

Chain rigging is a rigging connected by metal chain links, according to its form mainly welding and assembly two kinds, according to its structure single and multiple, etc., using high-quality alloy steel, its outstanding characteristics are wear resistance, high temperature resistance, low ductility, will not elongate after stress, etc. It has a long service life and is easy to bend, making it suitable for large-scale and frequent use. Develop good hoisting habits and plan how to hang, lift and unload before lifting work.

Preparation: Determine the weight of the object to be lifted and its center of gravity, read the attached documents carefully, and mark the lifting point and weight data. Only after determining the center of gravity can the hook be hung in the appropriate position!

The crane operator is informed of the weight of the object being lifted. The crane hook should be hung vertically above the center of gravity of the object to be lifted. Lifting lifting objects should not only avoid damage to the lifting objects, but also prevent damage to the rigging itself.

To avoid rotation or falling, the following conditions should be observed: for single-leg rigging, the lifting point should be located vertically above the center of gravity of the lifting object. In the case of a two-legged rigging, the rigging points should be located on both sides of the lifting object and the lifting point above the center of gravity.

In the case of three- and four-legged rigging, the rigging point should be evenly located at the level of the center of gravity of the lifting object and above the center of gravity of the lifting object. Attention must be paid to the lifting angle (located between the vertical line and the lifting legs): the larger the lifting angle, the smaller the lifting capacity.

A lifting angle of more than 60 degrees is absolutely not allowed! If a three- or four-legged chain rigging is used to lift a non-evenly distributed lifting object, the rated load of each leg should be calculated based on the two-legged lifting object with the largest lifting angle. When the two leg rigging legs are not at the same angle, then only one chain should be used to lift the entire lifting object, and the rated load of each leg should be calculated.

Enhance the safe use of slings and slings. All slings and slings used in the production hall and logistics area. Rights and Responsibilities:

The production department is responsible for the disposal of scrapped slings and slings and the issuance of new slings. The sling user is responsible for the inspection of the daily use of the sling and sling. The team leader is responsible for the application for the scrapping of broken slings and slings and the use of new slings.

The Ministry of Safety and Environmental Protection is responsible for the supervision of the safe use of lifting belts and slings. Sling belt: generally made of high-strength polyester filament, with high strength, wear resistance, oxidation resistance, ultraviolet resistance and other multiple advantages, at the same time soft texture, non-conductive, no corrosion (no harm to the human body), is widely used in various fields.

Sling: The connection between the crane or the body of the lifting object and the object being lifted is also a general term covering the sling and spreader. Precautions for the use of the sling:

It is strictly forbidden to use it with overload; When the two lifting belts are operating, the two lifting belts are hung directly into the double hook. The hoisting belt is hung in the symmetrical stress center position of the double hook; When the four slings are used, every two slings are directly hung into the double hook, pay attention to the slings in the hook can not overlap and squeeze each other, and the slings should be symmetrical to the center of the hook force. When the sling is in use, wrapping is not allowed.

When the lifting belt is used, the lifting belt is directly hung into the center of the hook force, and cannot be hung on the hook tip. During the hoisting operation, the hoisting belt is not allowed to cross, twist, knot, twist, and should be connected by the correct hoisting belt special connector. When encountering goods with sharp corners and edges, sheaths, corners and other methods must be taken to protect the lifting belt to prolong the service life of the lifting belt.

It is strictly forbidden to use the sling on rough surfaces. To avoid the sling being cut by the edges and corners and scratched by the rough surface. Double-turn choke strapping is safer.

When using the sling belt, the flat sling cannot be evenly loaded in the width direction due to the curved part of the hook, which is affected by the inner diameter of the hook. The diameter of the hook is too small, and the combination with the webbing ring eye is not sufficient, so the correct connector should be used. The opening angle of the ring eye of the circular hoisting belt should not be greater than 20°, and the cracking of the ring eye should be avoided during the reverse installation process.

When hoisting pipe objects, the correct hoisting method should be taken, and the hoisting angle is too large will cause potential safety hazards. The item should not be pressed against the sling as it will cause damage to the sling, and no attempt should be made to pull the sling out from underneath to cause danger. The object should be padded to allow enough space for the sling to be taken out smoothly.

The sling should not be pulled on the ground or rough surface. After use, the sling should be hung and stored. <>

Strengthen the safety training of chain rigging users: to ensure the safety of lifting and lifting, we should focus on strengthening the improvement of its safety technical quality. While strengthening safety publicity and education, users are required to master the basic safety technical knowledge of chain rigging; Understand the calculation of the center of gravity and forehead load of the sling in different use environments; Only mastering these basic security knowledge is the most critical.

Strengthen the safety management of chain rigging in use in enterprises: formulate the corresponding chain rigging safety management system according to the actual production, comprehensively register the chain rigging in use, and establish a chain rigging detail card. Hang a nameplate on each chain rigging, marked with the name of the rigging, model, load, date of use, etc.

Strengthen the daily safety management of chain rigging, so that special person management, special person use, fixed-point storage, regular inspection, timely scrapping, and do a good job in the maintenance and maintenance of chain rigging. <>

In order to ensure the safety of operation and personal safety, the majority of operators should strengthen the accumulation of operating experience and operate in strict accordance with the regulations. Especially during the lifting of chain rigging.

1. Arrange a special person to be responsible, and a special person is responsible for guiding, taking care of the power gas unit, and making hard accessories while adjusting.

2. Pay attention to whether the cable relaxation length meets the needs, and pay attention to check whether the cable is blocked in moving. When the wind speed exceeds level 6, regardless of the wind direction, jacking and connecting operations should be prohibited. In case of an instantaneous increase in air volume, the lifting should be stopped immediately.

3. In the process of lifting, it is forbidden to change the growth and rotation procedures, and the operation is carefully implemented. The team had to pay close attention to the entire lifting process and check the use of the chain rigging in time to avoid accidents that could endanger lives.

The most problematic parts of chain rigging installation are sprockets and pins. The wear of these two parts is mainly due to insufficient local lubrication, so in order to avoid this phenomenon, the operator should pay attention to check the lubrication effect frequently, add lubricating oil in time, check whether there is abrasive in the lubricating oil or change the lubrication method. First, keep the two axes in balance and the two wheels in the same plane.

Secondly, check whether the sprocket is connected to the shaft reliably, and the chain is not allowed to be over-tensioned. Thirdly, maintain a certain gap between the chain and the chain cover, and do not use the new chain with the sprocket that is seriously worn. Finally, the chain links are connected reliably, with the open end of the circlip in the opposite direction of rotation.

Proper installation of the chain rigging is the only way to ensure the correct use of the chain rigging.

Operators should wear protective gloves before operation. Confirm that the weight of the lifted weight matches the bearing of the chain hoisting rigging. It is strictly forbidden to overload the operation.

Carefully check whether the chain is twisted, knotted, knotted, etc., if there are any of the following situations, please adjust the chain down before proceeding to the next step. When the chain hoisting rigging is connected with the lifted weight, find a suitable center of gravity to ensure that there is no problem with the center of gravity before lifting. Before the start of hoisting heavy objects, it should be checked whether there is protection between the chain hoisting rigging and the heavy objects, so as not to damage the surface of the lifted heavy objects during hoisting.

Check whether there are personnel working and obstacles within the lifting range, and the site should be cleared in time, and the obstacles can be lifted only after the obstacles are removed. After the heavy object is lifted, no more personnel shall pass under the heavy object, or the construction shall be inspected at the bottom. Chain hoisting rigging is strictly forbidden to be used in hot-dip galvanizing tanks and pickling tanks.

Ensure that when lifting, load balancing During the lifting process, the sling must be used in a safe way and the load must not be tilted or slipped off the sling; The sling must be arranged directly above the center of gravity of the load and the lifting point to balance and stabilize the load, if the center of gravity of the load is not below the lifting point, the sling in motion may cross the lifting point. Causing danger. In the process of hoisting, pay close attention to ensure the safety of personnel, and must warn personnel in dangerous conditions, if necessary, immediately withdraw from the danger zone.

Hands or other parts of the body must be kept away from the sling to prevent injury if the sling is loose and remorseful. Controlling the rotation of the load If the load tends to tilt forward, the lifting object must be lowered to ensure that the load is restrained and to prevent the unexpected rotation of the load from being ensured. In the process of hoisting, it must be lifted in a demonstrative way Demonstrative hoisting must be adopted, the sling is picked up from the slack until the sling is tightened, the load is gradually lifted to a predetermined position, and it is particularly important to bear the load by friction when the basket is lifted or freely tightened.

1. There should be no skew and swing on the chain loading shaft. In the same transmission assembly, the end faces of the two sprockets should be located in the same plane, and when the center distance of the sprocket is below the meter, the allowable deviation is 1 mm; When the center distance of the sprocket is more than meters, the permissible deviation is 2 mm. However, it is not allowed to rub the side of the sprocket teeth, and if the two wheels are offset too much, it is easy to cause off-chain and accelerated wear.

Care must be taken to check and adjust the offset when replacing the sprocket.

2. The tightness of the lifting chain should be appropriate, too tight will increase the power consumption, and the bearing will be easy to wear; Too loose chains are prone to jumping and unchaining.

3. The new lifting chain is too long or elongated after use, and it is difficult to adjust, and the chain links can be removed depending on the situation, but it must be even. The chain link should pass through the back of the chain, the cleat should be inserted outside, and the opening of the locking tab should be in the opposite direction of rotation.

4. After the sprocket is seriously worn, the new sprocket and the new chain should be replaced at the same time to ensure good meshing. It is not possible to replace the new chain or sprocket alone, otherwise it will cause poor meshing and accelerate the wear of the new chain or new sprocket. After the tooth surface of the sprocket is worn to a certain extent, it should be turned over in time to use (referring to the sprocket used on the adjustable surface) to prolong the use time.

5. The old chain cannot be mixed with some new chains, otherwise it is easy to have an impact in the transmission and break the chain.

6. Remember to fill the lifting chain with lubricating oil in time during work, and the lubricating oil must enter the matching gap between the roller and the inner sleeve in order to improve the working conditions and reduce wear.

Chain rigging is a rigging made of metal chain links, which has outstanding characteristics such as wear resistance, high temperature resistance, low ductility, and no elongation after stress, and is mainly used in manufacturing, transportation, mining and other industries. With the rapid promotion of chain rigging, the issue of safe use has become the focus of widespread attention in the society. The four tips for chain rigging maintenance mainly focus on lubrication maintenance, one is the foaming method.

This method is widely popular, simple and easy to implement, and waste engine oil can be found everywhere, which is immediately desirable. Most users adopt it regularly and consistently. Cons:

First, the oil has strong fluidity, which has little effect on the internal lubrication of the chain, and the chain is gradually thrown out after high-speed movement, which is easy to dirty the rear wheels of the car, and needs to be filled frequently. Second, it is the butter heating method. Butter is used as the main material, supplemented by engine oil (or molybdenum disulfide, paraffin, etc.), and heated with the chain after being packed in a metal container, so that the solid liquefied fluid enters the friction surface of the winding transmission.

The advantage of this method is that the lubrication is more thorough, compared with engine oil, the butter has strong adhesion, is not easy to throw out, and the maintenance cycle is long. The disadvantage is that after the butter is heated, if the heat is not properly grasped, the chain is easy to fire at high temperature, and the hot oil touches the clothes and **, which is very unsafe. Third, it is a special chain oil.

Dedicated has the benefit of being dedicated. Direct injection, simple and fast, no worry about high-speed throwing, not afraid of complicated operation, not afraid of hot oil splashing, one purchase can be used for several years. The biggest drawback is that it's hard to buy.

Fourth, it is the graphite method. The method is similar to the second one, and the biggest advantage of the graphite method is that it does not stick to the ash for a long time and is dry lubricated. Think of twisting pencil lead powder by hand, it's a high-tech method, so you might as well give it a try.

The material is ground battery carbon rods. The chain is an important part of the chain rigging, lubrication is equal to less friction, less wear is equal to less depreciation, which greatly prolongs the service life.

Maintenance and maintenance of slings:

1. There are no organic acid volatile substances around the storage of nylon slings;

2. It is forbidden to store the sling in a high temperature and humid environment;

3. When using nylon slings, they should not be soaked in water or oil for a long time, and avoid sun exposure or use in high temperatures;

4. When moving the sling, do not drag it;

5. When it is found that the suture of the nylon sling is open, it should be sutured in time before use;

6. The sling should be hung and stored for daily use;

7. Metal slings should be avoided from being stored with inorganic acids and strong alkaline chemicals.

Precautions for the use of chain rigging:

1. It is strictly forbidden to work with excessive weight;

2. The chain is not allowed to be knotted or twisted during use;

3. The length of the chain rigging can be adjusted with a special adjuster;

4. Do not load with the tip of the hook;

5 The normal working temperature of the chain rigging is -40 to +200, 6 the lifting capacity is reduced to 90% from +200, the lifting capacity is reduced to 75% from 7 300%, and it is not recommended to use it after 8 400;