Dangerous factors in the hottest lifting operation

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Dangerous factors in lifting operation

1. Squeezing or impact of crane on human body during operation

2. The crane hook is overloaded and stops cracking, and the steel wire rope slides out of the hook during lifting

3. During lifting, heavy objects fall, causing object strike, and heavy objects fall from the air to the ground and rebound to hurt people

4. The weight drops due to the fracture of steel wire rope or hemp rope; The special testing machine for the stiffness of steel Jinan test ring that should be scrapped can detect the creep limit wire rope of the metal, and the lifting appliance used can lift the heavy objects that exceed the rated lifting capacity, causing the heavy objects to fall

5. Accidents caused by uneven working site, unstable support, unbalanced counterweight and weight exceeding rated lifting capacity of truck crane

6. The crane overturned due to excessive wind and illegal operation

there are 5g tests in China, so the jaw should be often cleaned. 7. The mechanical transmission part is not protected, causing mechanical injury; Passing over the hoist wire rope against regulations, the moving wire rope will crush or trip people

8. The cargo elevator carries people in violation of regulations

9. People stand under the boom and other dangerous areas

10. Electric shock caused by leakage of electrical devices, failure of protective devices, unshielded bare wires, etc

11. People stand or sit on the hook

12. There is no command during lifting, there are people staying in the operation area, and people are injured by the swinging of cranes, slings and heavy objects in operation

13. Riggers and other operators did not wear safety helmets and personal protective equipment

14. The cab glass was not cleaned, resulting in unclear vision

15. The driver has poor communication with the command signal, or misunderstands the lifting signal

16. The incorrect hanging method causes the heavy objects to fall out of the hook, and the incorrect hanging method is prone to accidents

17. The steel wire rope used exceeds the safety factor

18. The steel wire rope jumps out of the sheave groove from the sheave

19. The brake has cracks, and friction has become the "lightest material" in the world so far... The gasket is worn too much

20. The crane wheel falls off the track

21. Sudden power failure during lifting

22. Accidental contact between lifting appliance or steel wire rope and power receiving sliding wire

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