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Introduction to popular science about couplings
  • 23 Sep, 2021
  • Posts by : Raiseway
Introduction to popular science about couplings
Couplings are also called couplings. 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 with other parts. 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. The coupling can also compensate for the deviation between the two shafts due to inaccurate manufacturing and installation, deformation or thermal expansion during work, etc.; as well as alleviate impact and absorb vibration.

Most of the commonly used couplings have been standardized or standardized. Under normal circumstances, it is only necessary to correctly select the type of coupling and determine the type and size of the coupling. When necessary, the load capacity of the vulnerable links can be checked and calculated; when the speed is high, the centrifugal force of the outer edge and the deformation of the elastic element need to be checked, and the balance check and so on are required.

Couplings can be divided into two categories: rigid couplings and flexible couplings. Rigid couplings do not have the ability to buffer and compensate for the relative displacement of the two axes, and require strict alignment of the two axes. However, this type of coupling has simple structure, low manufacturing cost, and assembly and disassembly. , Convenient maintenance, can ensure high neutrality of the two shafts, large transmission torque, and wide application. Commonly used are flange couplings, sleeve couplings and clamp couplings. Flexible couplings can be further divided into flexible couplings without elastic elements and flexible couplings with elastic elements. The former type only has the ability to compensate the relative displacement of the two axes, but it cannot buffer and reduce vibration. The common ones are slippery. Block couplings, gear couplings, universal couplings, chain couplings, etc.

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