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 effect of buffering, damping and improving the dynamic performance of the shafting. The coupling consists of two halves, which are respectively connected with the driving shaft and the driven shaft. Most of the general power machines are connected to the working machine by means of a coupling.
Definition of coupling
There are many kinds of couplings. According to the relative position and position change of the two shafts connected, they can be divided into: 1 fixed couplings. It is mainly used in places where the two axes require strict alignment and relative displacement does not occur in the work. The structure is generally simple and easy to manufacture, and the two axes have the same instantaneous rotation speed, mainly including flange couplings, sleeve couplings, and clamps. Shell coupling and so on. 2 removable coupling. Mainly used for two-axis deflection or relative displacement in the work, according to the method of compensating displacement can be divided into rigid removable coupling and elastic removable coupling. Rigid moveable couplings are compensated by the use of couplings formed between the working parts of couplings with a degree of motion in one or more directions, such as jaw couplings (allowing axial displacement), cross-groove couplings (for connecting two axes with small parallel displacement or angular displacement), universal coupling (for larger skew angles in two axes or places with large angular displacement in operation), gear couplings (Allow comprehensive displacement), chain coupling (allowing radial displacement), etc. Elastic movable coupling (abbreviated as elastic coupling) utilizes the elastic deformation of the elastic element to compensate for the skew and displacement of the two axes. The elastic elements also have cushioning and damping properties, such as serpentine spring couplings, radial multilayer leaf spring couplings, elastic ring pin couplings, nylon pin couplings, rubber sleeve couplings, etc. . Some couplings have been standardized. Select the appropriate type according to the work requirements first, then calculate the torque and speed according to the diameter of the shaft, and then find out the applicable model from the relevant manual, and finally make the necessary checking for some key parts.
The classification also includes ball-cage universal couplings, conical-blade spring couplings SWP, SWC-type cross-shaft universal couplings cross-packs 94)
Orthogonal Universal Couplings for Orthogonal Machines (JB/T7846.2-95) Universal Couplings for Spring Couplings WS and WSD Universal Couplings (JB/T5901-91)
WSH Type Plain Bearings Cross Axle Type Universal Couplings ML Type Film Couplings (SJ2127-82) SWZ Type Hollow Bearings Cross Axle Type Universal Couplings
Coupling concept:
Couplings belong to the category of mechanical universal parts and are used to connect 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 effect of buffering, damping and improving the dynamic performance of the shafting. The coupling consists of two halves, which are respectively connected with the driving shaft and the driven shaft. Most of the general power machines are connected by means of couplings and working machines. They are the most commonly used coupling components for shaft transmissions of mechanical products. In the late 20th century, coupling products at home and abroad developed rapidly. In the design of products, couplings that meet the requirements of machines are selected from various types of couplings of various types and performances. For most designers, It is always a problem. Common couplings are diaphragm couplings, tooth couplings, plum couplings, slider couplings, drum gear couplings, universal couplings, safety couplings, elastic couplings And serpentine spring couplings.
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