What Are The Methods Of Preventing Loosening Of Lock Nuts?

The locking nut is the screw cap, which is screwed together with the anchor bolts or bolts for the tightening effect. It is an original for all production and processing machinery and equipment. The locking nut is a part that connects the gaps of industrial equipment. According to the thread on the inner side, the lock nut and the screw of the same specification and type can be connected together. The following will introduce you several methods of preventing the lock nut from slipping.

1. Mechanical equipment anti-loose

The relative rotation of the lock nut pair is immediately limited by the lock nut stop. For example, hard-to-open pins, series steel wires and stop seals are used. Because the lock nut stopper has no pre-tightening force, the anti-loose stopper can only work when the lock nut nut is loosened and returned to the stop position. Therefore, in practice, the lock nut does not prevent loosening but prevents it from loosening. scattered.

2. Riveting and anti-loosening

After tightening, use punching, electric welding, bonding and other methods, so that the lock nut pair loses the characteristics of the kinematic pair and the butt joint becomes inseparable. The disadvantage of this method is that the bolt is only used once, and it is very difficult to disassemble and assemble, and it is necessary to damage the auxiliary side of the anchor bolt.

3. Friction and anti-loosening

This is also a widely used anti-loosening method. This method creates a positive pressure in the middle of the lock nut pair that does not change with the action of external force, so as to form a sliding friction force that can block the relative rotation of the lock nut pair. Such positive pressure can be achieved by clamping the locknut pair radially or simultaneously in both directions. Such as the use of ductile sealing rings, double nuts, lock nuts and insert lock nuts.

4. Structural anti-loose

It is the use of the self-structure of the lock nut, that is, the lock nut anti-loosening method of Down syndrome.

5. Edge punching method to prevent loosening

After the nut is tightened, the thread is damaged by punching at the end of the thread; anaerobic adhesive is usually used for anti-loose bonding to wipe the surface of the thread. excellent. The disadvantage of this method is that the bolt is only used once, and it is very difficult to disassemble and assemble. It is necessary to destroy the anchor bolt pair to remove it.