When using chain hoists decoupling how to do?

manual hoist lifting industry can be said to be the most widely used in small  Hoist equipment ,  due to its small size, light weight, easy to use features so popular favor, but widely used, and there would be the inevitable problems, the recent Technical Department received a lot of inquiries, that the use of chain hoists encountered decoupling situation, the following tells you how to do encounter such problems?
The use of rigorous  chain block   stayed, hanging crooked, twisted chain, overload, and other illegal operations, such as according to the rules of use, there is still decoupling  lift hoist  , crane beams due to fixation of the ball screw Zhao a fixation problems, Lo Chiu, a method of fixing is 13 ball assembly is completed, use a screwdriver to screw screwed into Chiu Chiu, a bottom of a hole, and then screw the outer end of said Chiu, a hole punch riveting. When exposed to the hook of gravity, the hook ring groove ball gave an outward force, Lo Chiu a ball out on top by force, when Lo Chiu said outer end a hole is not firmly riveted, screw-chiu a Lo Chiu, a hole from the exit to withstand shear forces and friction of the ball in the role of external forces, have a hole to exit from Lo Chiu, hook and hook beam loses the ball constraints, hooks and hook beam the hook relative displacement axial direction relative to spoon out the most severe cases, can cause accidents.