The Safety of The Sling Interpretation Use Steps

 Lifting sling such as steel wire ropes with, chain rigging, lifting grips, shackles, etc on the construction sites and terminal use is very extensive, although is small parts, but it is related to the production safety of cannot be ignored. Objects hanging position not correct, sling with the improper use of choice, and causes of lifting accidents occur frequently, especially lifting some large objects, crashed and great economic losses caused by accident. Therefore, in the sling the use and management of, can't neglect and lightly. So how to safely use sling? Below is "let sling for all the use of a sling analytical steps: 

 

A, assignments for sure

 

Lifting operation is a technical, danger, need to many people cooperate with each other and mutual coordination and unity of command authorized operation. So homework personnel must pass strict training, and posts. Before work must also on work safety environment, heavy hoisting the route, the weight of the workpiece and center of gravity, rigging, equipped with the choice of the hoisting equipment whether meet the needs of calculation and analysis, formulate correct lifting scheme.

 

Second, properly using sling:

 

1, users should know all kinds of sling and its accessories itself at the end of the performance, use the points for attention and the rejection standard.

 

2, chooses sling should be suspended workpieces with the appearance of the characteristics and adapt to specific requirements, in does not have the conditions of use, can't deal with use.

 

3, before operation, deal with sling and parts inspection, confirmed in good condition, can be used.

 

4, before hanging, should choose the correct cable point; Before ascension, you should confirm whether firmly bind.

 

5, sling and accessories can't more than its rated the weight, sling shall not exceed the hanging of the corresponding state maximum working load.

 

6, homework should prevent damage to the sling and accessories and, when necessary, on edges in should add protect horn protection.

 

7, sling in life shall adhere to the regular inspection, the conditions of large tonnage and important products of sling and accessories for testing should be at the end of the inspection.
 

 

Three, seize large a hoisting the main point

 

For large workpiece hoisting of assembling or in place, because the tonnage large, complex shape, value is expensive, with many factors, such as, further improve the homework difficulty and danger coefficient, therefore, in a sling large workpiece, should master and seize the following main point:

 

1, observe the appearance before operation, master the center of gravity of the workpiece position, and on the basis of the weight of the drawings confirming workpiece.

 

2 and proper ropes, shackles, card sling a hook etc. Choose wire rope, single rope bearing pull, can press S (Newton) = 100 • d2 experience formula. Among them: d for wire rope diameter, the unit is mm.

 

3, the workpiece itself has designed for lifting and design's rings or lug, carefully check before operation, and should be in all rings and cable.

 

4, workpiece itself has no rings, should choose the correct point of the cable. And the crane on the hook head barycenter position.

 

5, pay attention to the rope Angle between general should be less than 90 degrees.

 

6, ropes pass at the edges, have to add protect horn protection.

 

7 to have tried it, before hanging process, make sure safety continue again to the next step after work.