Lifting crane accident caused a major factor in what

   In daily lifting operation, the common injuries are decoupled hit people, who smoke rope breaks, mobile hanging objects butt, tackle hit people and tipping accidents, fall accidents, too hoist lifting equipment accidents, lifting equipment inadvertently high voltage electric shock or induction charged body. Cause of these accidents are many reasons, but the main factors are operating factors and the equipment factor.
First, the operational factors are:
(A) lifting improper manner, resulting in decoupling or lifting objects swing wounding.
(2) violation of rules, such as overloading lifting, or people in the danger zone work.
(3) improper command, incoordination and so on.

Second, the device main factors:

(1) spreader failure, such as a hook, grab, rope, nets and other damage caused by heavy objects falling.
(2) lifting equipment control system malfunction or failure of safety devices and cause accidents, such as brake failure caused by heavy impact and pinched.
(3) insufficient strength components, such as tower  bridge gantry crane   dumping, the reason is the tower of the overturning moment exceeds the stabilizing moment due.
(4) electrical damage caused by electric shock.
(5)  overhead bridge crane  derailment, which is mostly caused by gnawing rail phenomena caused by loose fasteners.