Couplings

Coupling, also known as coupling, refers to a device that connects two shafts or shafts and rotating parts, and rotates together in the process of transmitting motion and power, and does not disengage under normal conditions. Sometimes it is also used as a safety device to prevent the connected parts from being subjected to excessive loads and play a role in overload protection.

A mechanical component used to firmly connect the driving shaft and the driven shaft in different mechanisms to rotate together and transmit motion and torque. Sometimes it is also used to connect shafts and other parts (such as gears, pulleys, etc.). It is often composed of two halves, which are connected by keys or tight fits, respectively, and fastened to the ends of the two shafts, and then the two halves are connected in some way.

According to different working conditions, the coupling needs to have the following performance:

(1) Mobility. Refers to the ability to compensate the relative displacement of two rotating components. The movable performance compensates or relieves the additional load between shafts, bearings, couplings and other parts caused by the relative displacement between the rotating components.

(2) Cushioning. For occasions where the load starts or the working load changes, the coupling must have elastic elements that can buffer and reduce vibration to protect the prime mover and the working machine from damage.

(3) Safe and reliable, with sufficient strength and service life.

(4) Simple structure, convenient assembly, disassembly and maintenance.