What are the methods to prevent nuts from loosening?

The washer refers to the part padded between the connecting part and the nut. Generally, it is a flat metal ring, which is used to protect the surface of the connected part from the wear of the nut and disperse the pressure of the nut on the connected part.

2. Add flat washer and spring washer.

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

3. Self-locking nut

Ordinary nuts will loosen themselves due to vibration and other reasons during use, such as vibration. In order to prevent this phenomenon, a self-locking nut was invented. Self-locking nuts are mainly used to prevent looseness and vibration.

Used in special occasions, its working principle is generally self-locking by friction. Self-locking nuts are classified according to their functions, including those with embedded nylon rings, those with closed ends and those with metal locking devices. All belong to the effective torque lock nut. Self-locking nut is difficult to tighten because of its own nature.

4. Nut locking fluid

Apply the nut locking liquid to the bolt tightening position, and screw on the nut to achieve the locking effect.

5, double nut locking

It is also a good method to tighten and lock with left-handed nut and right-handed nut.

6, screw nut drilling and pin fixation

In machinery, pins are mainly used for assembly and positioning, and can also be used for connecting and loosening overload shear connections in safety devices. The types of pins are: cylindrical pin, conical pin, perforated pin, split pin and safety pin.