Coupling

Coupling refers to a device that connects two shafts or shafts with rotating parts, rotates together during the transmission of motion and power, and does not detach under normal circumstances. The following is a detailed interpretation of the definition of a coupling:
1、 Basic functions
The main function of a coupling is to connect two shafts together so that they can rotate together, thereby transmitting motion and torque. In mechanical transmission systems, couplings serve as bridges and links, ensuring that power can be smoothly transmitted from one shaft to another.
2、 Structural characteristics
Couplings are usually composed of two halves, which are connected to the ends of two shafts using keys or tight fit. It has various structural forms to adapt to different transmission requirements and working conditions. For example, rigid couplings have a simple structure, low manufacturing costs, and are suitable for applications with high requirements for neutrality; Flexible couplings, on the other hand, have the ability to compensate for two axis deviations and provide cushioning and shock absorption, making them suitable for situations with high vibration or requiring precise control.
3、 Classification and Application
Couplings can be divided into two categories: rigid couplings and flexible couplings. Rigid couplings do not have buffering and compensation capabilities for relative displacement between two axes, requiring strict alignment of the two axes; Flexible couplings can compensate for the deviation between the two shafts appropriately and have certain buffering and shock-absorbing performance. In practical applications, different types of couplings are suitable for different mechanical transmission systems and working conditions. For example, flexible couplings such as diaphragm couplings and bellows couplings are commonly used in situations where shaft deviation compensation and shock absorption are required; Rigid couplings such as flange couplings and sleeve couplings are suitable for applications with high requirements for neutrality.
4、 Additional features
In addition to the basic functions of transmitting motion and torque, couplings can also be used as safety devices. When the connected components are subjected to excessive loads, the coupling can protect the mechanical transmission system from damage by slipping or breaking. This overload protection function is particularly important in certain critical equipment.
In summary, couplings are essential components in mechanical transmission systems. Its definition covers multiple aspects such as its basic functions, structural characteristics, classification and application, as well as additional functions. When designing and selecting couplings, it is necessary to comprehensively consider the specific transmission requirements and working conditions to ensure the normal operation and long-term stability of the mechanical transmission system