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What is a coupling?

wallpapers News 2020-05-19
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 circumstances. Sometimes, it is also used as a safety device to prevent the connected parts from being subjected to excessive loads, and plays the role of overload protection.
Couplings are also called couplings. Mechanical components used to firmly connect the driving shaft and driven shaft in different mechanisms to rotate together and transmit motion and torque. Sometimes used to connect the shaft and other parts (such as gears, pulleys, etc.). It is usually composed of two halves, which are connected by keys or tight fits, etc., fastened to the two shaft ends, and then the two halves are connected by 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 operation (including axial offset, radial offset, angular offset or comprehensive offset) ; And to mitigate shocks and absorb vibration.
Most of the commonly used couplings have been standardized or standardized. In general, it is only necessary to correctly select the type of coupling and determine the type and size of the coupling. If necessary, the load capacity can be checked and calculated for its vulnerable parts; 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 checked.
 

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