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Coupling Definition
Dec 10, 2018

A coupling is a mechanical part that is used to couple two shafts (active shaft and driven shaft) in different mechanisms to rotate together to transmit torque. In high-speed and heavy-duty power transmissions, some couplings also have the function of damping, damping and improving the dynamic performance of the shafting. The coupling consists of two halves, which are respectively coupled to the drive shaft and the driven shaft. Most of the general power machines are connected to the working machine by means of a coupling. There are many types of couplings, which can be divided into: 1 fixed coupling according to the relative position and position of the two shafts being connected. It is mainly used in places where the two axes are strictly centered and does not have relative displacement during work. The structure is generally simple, easy to manufacture, and the instantaneous speed of the two axes is the same. There are mainly flange couplings, sleeve couplings and clamps. Shell couplings, etc. 2 movable coupling. It is mainly used for the deflection of the two axes or the relative displacement in the work. According to the method of compensating the displacement, it can be divided into a rigid movable coupling and an elastic movable coupling. The rigid movable coupling is compensated by the movement of the coupling between the working parts of the coupling, which has a certain direction or several directions of motion, such as a toothed coupling (allowing axial displacement), a cross groove coupling (for connecting two shafts with parallel displacement or angular displacement), universal coupling (for large deflection angle of two shafts or large angular displacement during operation), gear coupling (Allow integrated displacement), chain coupling (allowing radial displacement), etc. Elastic movable coupling (referred to as elastic coupling) utilizes the elastic deformation of the elastic element to compensate the deflection and displacement of the two axes. The elastic element also has cushioning and damping properties, such as serpentine spring coupling, radial multi-layer leaf spring coupling, elastic ring pin coupling, nylon pin coupling, rubber sleeve coupling, etc. . Some of the couplings have been standardized. When selecting, first select the appropriate type according to the work requirements, then calculate the torque and speed according to the diameter of the shaft, then find the applicable model from the relevant manual, and finally make the necessary check for some key parts.

Classification also includes ball cage universal couplings Conical bowl spring couplings SWP, SWC type cross shaft universal coupling cross pack 94)

Cross shaft type universal coupling for correcting machine (JB/T7846.2-95) Spring tube coupling WS, WSD type cross shaft type universal coupling (JB/T5901-91)

WSH type sliding bearing cross shaft type universal coupling ML type film coupling (SJ2127-82) SWZ type integral bearing seat cross shaft type universal coupling 93

Coupling concept:

Couplings belong to the category of mechanical general-purpose components and are used to couple two shafts (active shaft and driven shaft) in different mechanisms to rotate together to transmit torque mechanical parts. In high-speed and heavy-duty power transmissions, some couplings also have the function of damping, damping and improving the dynamic performance of the shafting. The coupling consists of two halves, which are respectively coupled to the drive shaft and the driven shaft. Most of the general power machines are connected to the working machine by means of the coupling, which is the most commonly used coupling component for the shafting transmission of mechanical products. In the late 20th century, the coupling products at home and abroad developed rapidly. In the product design, how to choose the couplings that can meet the requirements of the machine from various couplings with various varieties and different performances. For most designers, It is always a problem. Commonly used couplings are diaphragm coupling, drum gear coupling, universal coupling, ball cage universal coupling, safety coupling, elastic coupling and serpentine spring coupling. Flexible coupling, plum coupling, gear coupling, elastic sleeve pin coupling, etc.

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