The common feature of universal joints is the large amount of angular compensation, and the angle between the two axes of universal joints of different structure types is not the same, generally ≤5°-45°...
There are many types of couplings. According to the relative position and position changes of the two connected shafts, fixed couplings. It is mainly used for places where the two shafts require strict alignment and no relative displacement during work. The square and the general structure Relatively simple, easy to manufacture, and the instantaneous speed of the two shafts...