Types of couplings
There are many types of couplings, which can be divided into:
①Fixed coupling. It is mainly used in places where the two shafts require strict alignment and no relative displacement occurs during work. The structure is generally simple and easy to manufacture, and the instantaneous speed of the two shafts is the same. There are mainly flange couplings, sleeve couplings, and clamps. Shell couplings, etc.
② Movable coupling. It is mainly used in places where the two shafts are deflected or there is relative displacement during work. According to the method of compensating displacement, it can be divided into rigid movable coupling and elastic movable coupling. Rigid movable couplings use the dynamic connection formed between the working parts of the coupling to have a certain direction or several directions of activity to compensate, such as jaw couplings (allowing axial displacement), cross groove couplings Universal coupling (used to connect two shafts with small parallel displacement or angular displacement), universal coupling (used for places where the two shafts have a large deflection angle or a large angular displacement during work), gear coupling (to allow comprehensive displacement), chain coupling (to allow radial displacement), etc., the elastic movable coupling (referred to as elastic coupling) uses the elastic deformation of the elastic element to compensate the deflection and displacement of the two axes, and at the same time Elastic elements also have buffering and shock-absorbing properties, such as serpentine spring couplings, radial multi-layer leaf spring couplings, elastic ring pin couplings, nylon pin couplings, rubber sleeve couplings, etc. .
Summarize:
Couplings are somewhat standardized. When choosing, you should 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 out the applicable model from the relevant manual, and finally make necessary checks on some key parts.
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