It is permanently attached to the thread by special engineering plastics, so that the internal and external threads are tightened during the tightening process, and the engineering plastic is squeezed to generate a strong reaction force, which greatly increases the friction between the internal and external threads and provides vibration. Absolute resistance.
The locknut is a nut, a part that is screwed together with a bolt or a screw for fastening, and an original that must be used in all manufacturing machinery. The locknut is a part that tightly connects the mechanical equipment through the inner side. Threads, the same size locknuts and screws can be connected together. Here are four ways to prevent the loosening nut from slipping.
Mechanical anti-loose
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 stop 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 practically not loose-proof but avoids falling.
Riveting and anti-loose
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.
Frictional anti-loose
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 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.
Construction anti-loose
Is to apply the lock nut copy body structure, that is, the Down lock nut anti-loose way