The chain of chain block can not be pulled, which may be caused by these reasons:

Reason 1: overload occurs. If the weight of the lifting weight is too large, it is impossible to pull the weight through the bracelet. Then, in the process of pulling, there is a situation of diagonal pulling or diagonal lifting, which will also cause the bracelet to fail to pull.

Reason 2: the chain block appears to be jammed. To eliminate the damage or deformation of the chain block, the chain block can be hung vertically and hoisted after the chain is straightened out.

      Reason 3: there is a problem with the hand zipper wheel of the chain block, which leads to problems in the engagement of the chain and sprocket and the normal transmission cannot be carried out, which naturally leads to the failure to pull the chain.