TOYO teaches you how to avoid hand chain hoist decoupling？
Hand chain hoist unhooking generally refers to the accident that the hook of the chain hoist suddenly falls off the beam. As a tool widely used in various lifting heavy objects, the unhooking of the chain hoist will cause irreversible harm. How should it be avoided?
Buy regular products
First of all, qualified products are the prerequisite to ensure the safe use of chain hoists, and everyone should buy regular products from regular manufacturers.
Compliance with operating specifications
Secondly, it is also very important to strictly follow the relevant operating specifications of the chain hoist. Generally, a load test of 1.25 times the rated load of the chain hoist is required.
Pay attention to check the screws at the end of the hook beam
For newly purchased chain hoists, a comprehensive inspection must be done before use, especially the fixing of the screw holes at the end of the hook beam.
Generally speaking, the unhooking of the chain hoist is due to the problem of the screw fixing method of fixing the balls in the hook beam.
The screw fixing method is to assemble the 13 rollers, use a screwdriver to screw the screw into the bottom of the screw hole, and then rivet the outer port of the screw hole. Under normal circumstances, the size of the screw and the parts in the screw hole are processed normally. When the screw is screwed into the bottom of the screw hole, the distance between the end of the screw head and the ball should be equal to the gap between the ball and the ball ring groove. When the hook bears the weight, the ring groove of the hook gives the ball an outward force, and the screw receives the force of the ball.
When the outer port of the screw hole is not riveted firmly, the screw is withdrawn from the screw hole, and the ball bearing the shearing force and friction force is successively withdrawn from the screw hole under the action of the external force. The relative displacement in the direction of the hook axis and detachment caused an accident.