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There are many types of couplings, which can be divided into:
1. fixed coupling according to the change of the relative position and position of the two shafts 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 compensates for the dynamic connection between the working parts of the coupling with 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 bolt coupling, nylon bolt 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.