Hoisting rigging because light weight, easy to use, do not hurt the suspended surfaces, lifting smoothly, safety, high strength, bright color, improve work efficiency, reduce cost, corrosion resistance, abrasion resistance and its own characteristics used widely.
Lifting operation commonly used sling, rigging and at the end of the accessories, according to industry customs, we for lifting the lifting operation of rigid take content device called a sling, such as: hooks, grab, clamps, chuck, special sling, etc.; The department and the flexible tool called rigging, such as: wire rope, and chain, synthetic fiber condole belt, etc.; At the end of the parts of the commonly used a flying ring, shackles, rope card, etc.
In hoisting of the accident statistics and analysis shows that, because of the workpiece hanging position choice is not correct, sling selection, improper use of lifting accident happened and occupy a large proportion, especially the lifting some large workpiece, as the company claims hook personnel itself technology quality is low or sense of responsibility, regular meeting causes accidents, and cause a major economic loss. If a unit hook personnel to use 2 root φ 43.5 mm steel wire rope double hoisting stacked three tickets for the total about 72 tons of steel, due to the small size of the rope choose hoisting overload, and sharp edges without padding in protection, when the steel plate up to about 2.5 meters high, wire rope on edges place happening ruptures, lead to steel plate falling. Be like again, some unit hook personnel from crane's discharge in a heavy 45 tons of workpiece, as the against the rule (the four rings set itself, hanging with only when 3 of them), lifted workpiece happened after partial object, impact will snap wire rope, the workpiece is falling. Therefore, in the sling the use and management of, can't neglect and lightly.So how to safely use sling?
A, determine the assignments for 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.
8, avoid sewing chain and parts or tear overload
9, when moving sling, don't drag it
10, avoid robbery or concussion load
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