Locking method for locknut

- Aug 28, 2018-

A locknut is a nut, a part that is screwed together with a bolt or a screw for fastening, and a part that must be used in all manufacturing machinery. The locknut is a part that tightly connects the mechanical equipment through the inside. The thread, the same size locknut and screw can be connected together. The following four ways to prevent the loosening nut from slipping are detailed.

Folding machinery

The relative rotation of the lock nut pair is directly limited by the lock nut stopper. Such as the use of the pin, stringed wire and stop washers. Since the lock nut stopper has no pre-tightening force, the anti-loose stopper acts when the lock nut is loosened to the stop position. Therefore, the lock nut is not loosened in practice but avoids falling.

Folding and riveting

After tightening, the method of punching, welding, bonding, etc. is adopted, so that the lock nut pair loses the characteristics of the movement pair and the connection becomes undetachable. The drawback of this method is that the bolt can only be used once, and the disassembly is very difficult, and the bolt must be destroyed to be detachable.

Folding friction

This is the most widely used type of anti-loose method that produces a positive pressure between the lock nut pairs that does not vary with the external force to create a frictional force that prevents relative rotation of the lock nut pair. This positive pressure can be accomplished by axially or simultaneously pressing the lock nut pair in both directions. Such as elastic washers, double nuts, self-locking nuts and insert lock nuts.

Folding structure

Is the application of the lock nut copy body structure, that is, the Down lock nut anti-loose way