Causes of rotating phenomenon of Crane Hook

Causes of rotating phenomenon of Crane Hook：

Crane Hook rotation phenomenon

Crane Hook rotation is often without any warning occurred in the equipment hoisting operations, when the crane lifting the weight, the Crane Hook rotation, wore around the Crane Hook and the top of the crane between the rope twisted together, Lifting the weight with the Crane Hook together with the rotation, then can not continue to lift or put down the lifting of the weight. Crane Hook rotation can affect the normal operation of the lifting operation, seriously threatening the safety of workers and equipment, and therefore must be avoided.

Crane Hook rotation is related to the following factors:

(1) the more large-scale cranes, the higher the lifting height, that is, the longer the top of the boom pulley and the Crane Hook between the Crane Hooks, the greater the possibility of Crane Hook rotation;

(2) Crane Hook wire rope to wear into a singular match than the number of matching easy to make the Crane Hook rotation, and wear around the rope to match the number of small, the greater the possibility of Crane Hook rotation;

(3) the greater the weight of a single wire rope, the greater the possibility of Crane Hook rotation;

(4) the outer dimensions of the Crane Hook assembly and the smaller the size of the pulley, the greater the possibility of the Crane Hook rotation;

 (5) operating crane landing Crane Hook speed is not smooth, especially heavy objects from the ground, the Crane Hook increases the possibility of rotation.