How many basic methods do you know to prevent nuts from loosening?

How many basic methods do you know to prevent nuts from loosening?

How to tighten a small nut has always been a long-standing topic in mechanical design, and everyone is familiar with it, such as Japanese eccentric nuts, Tang nuts, and Chinese self tightening king nuts. But today we won't talk about these celebrities in the fastener industry. Let's talk about the most basic method of fixing nuts in work.

Flat washer

A washer refers to a part that is placed between the connected part and the nut. Generally, it is a flat metal ring used to protect the surface of the connected part from being scratched by the nut, and to disperse the pressure of the nut on the connected part.

Flat washer and spring washer

Spring washers are widely used in load-bearing and non load-bearing structures of general mechanical products, characterized by low cost, convenient installation, and suitable for frequently installed and disassembled parts. But the anti loosening ability of spring washers is very low!

Self-locking nut

Generally, nuts will loosen themselves during use due to vibration and other reasons, such as vibration. To prevent this phenomenon, self-locking nuts were invented. The main function of self-locking nuts is to prevent loosening and vibration.

For special occasions. Its working principle is generally self-locking by friction. The types of self-locking nuts classified by function include those with embedded nylon rings, those with neck closures, and those with metal anti loosening devices. They all belong to the effective torque type locking nuts.

Self locking nuts are difficult to tighten due to their nature.

Nut locking liquid

Applying nut locking solution to the bolt tightening area and then tightening the nut can achieve the effect of locking.

Double nut (left and right rotation) anti loosening

It is also a good method to tighten and prevent loosening by combining a left-hand nut with a right-hand nut.

Screw and nut drilling and pin fixation

In machinery, pins are mainly used for assembly positioning and can also be used as overload shear connections in connection and relaxation level safety devices. The types of pins include: cylindrical pins, conical pins, perforated pins, split pins, and safety pins.