The function of the coupling is to connect the water pump shaft and the water pump motor shaft to rotate together. The coupling is also called a coupling, a pair of wheels, a return wheel, etc. Common couplings include rigid couplings, elastic couplings, gear couplings, hydraulic couplings, etc.

Working principle and application of couplings

1. Function of couplings: It is used to connect two shafts together. The two shafts cannot be separated when the machine is running. Only after the machine stops and the connection is removed, can the two shafts be separated.

2. Types of couplings: The two shafts connected by the coupling will cause changes in the relative position of the two shafts due to manufacturing and installation errors, deformation after load action, and the influence of temperature changes, and strict alignment is often not guaranteed. According to whether the coupling has elastic elements, whether it has the ability to compensate for various relative displacements, that is, whether it can maintain the connection function under the condition of relative displacement, and the purpose of the coupling, the coupling can be divided into rigid couplings, flexible couplings and elastic couplings.

The main types and characteristics of couplings and their role categories in transmission systems. Rigid couplings - can only transmit motion and torque, and do not have other functions, including flange couplings, sleeve couplings, shell couplings, etc. Flexible couplings - flexible couplings without elastic elements, which can not only transmit motion and torque, but also have different degrees of axial, radial and angular compensation performance, including gear couplings, universal couplings, chain couplings, slider couplings, etc.

Flexible couplings with elastic elements can transmit motion and torque; have different degrees of axial, radial and angular compensation performance; also have different degrees of vibration reduction and buffering effects, improve the working performance of the transmission system, among which various non-metallic elastic element flexible couplings and metal elastic element flexible couplings have different structures, large differences, and different functions in the transmission system. Couplings - transmit motion and torque, overload protection.

Flexible couplings also have different degrees of compensation performance, including pin type, friction type, magnetic powder type, centrifugal type, hydraulic type, etc. Couplings are used in different mechanisms to connect two shafts (driving shaft and driven shaft) to make them rotate together and transmit torque. In high-speed and heavy-load power transmission, some couplings also have the functions of buffering, shock absorption and improving the dynamic performance of the shaft system.