Self-locking force of threaded joint
Threaded connections are one of the most widely used fastening methods in engineering and household fields. The connection of threads has the advantages of assembly and disassembly, many types and easy installation. As a kind of threaded connection, the threaded joints always encounter disconnection problems in the actual use process. Therefore, in order to ensure the use safety and reliable performance of dynamic actuators and electrical appliances, a certain self-locking force must be generated at the connection sections of the threaded joints.
In practice, the self-locking force of threaded joint is determined by the thread torque and the friction between the screw and the nut. In terms of torque, the nominal torque of a threaded joint is given to the nut, and the nut is tightened to the maximum torque, thus the static torque together with the elastic deformation resistance of the screw reached the maximum value and thus generated a certain self-locking force. The frictional force between the screw and the nut is also an important factor to realize the self-locking effect of the threaded joint. When the low-strength materials are used as the screw and the nut, the friction coefficient also affects the self-locking force.
Needless to say, the traditional mechanical nuts are usually used in most dynamic actuators and electrical appliances. In essence, the self-locking force generated by the traditional mechanical nut is the maximum torque that the nut can bear. But in real life, the traditional mechanical nut will bring some potential safety hazards because of its low efficiency and poor security. Therefore, in recent years, a new type of self-locking threaded connection system has been developed, i.e., the self-locking nut.
Compared with the traditional mechanical nut, the self-locking nut has the characteristics of self-locking and self-venting. With the help of the self-locking nut, the self-locking effect produced by the combination of torque and friction can be improved. The self-locking nut adopts the structure of the upper and lower parts, which not only increases the self-locking force of the threaded joint, but also improves the safety of the threaded joint. Therefore, in the practical application of dynamic actuators and electrical appliances, the self-locking nut is used more and more widely.
In addition, the self-locking force of threaded joint can also be increased by thread locking technology, such as anaerobic adhesive thread locking, liquid thread locking, cold flow thread locking and so on. Thread locking technology can further increase the self-locking force of the threaded joint by increasing the friction of the threaded joint in a safe and reliable way, which plays an important role in the safety and reliability of dynamic actuators and electrical appliances.
To sum up, the self-locking force of a threaded joint is very important for the safety and reliability of the application of dynamic actuators and electrical appliances. The traditional mechanical nut can only generate a certain self-locking force, so it will bring certain potential safety hazards. Therefore, in the actual use process, self-locking nuts and thread locking technologies should be used to further improve the self-locking force of the threaded joint and ensure the safety and reliability of the dynamic actuators and electrical appliances.
