The universal joint is a mechanism that realizes variable-angle power transmission. It is used where the direction of the transmission axis needs to be changed. It is the "joint" component of the universal transmission device of the automobile drive system. The combination of the universal joint and the transmission shaft is called a universal joint transmission device. Synchronous belt drive is a meshing belt drive. Traditional large-span long-distance transmission mostly uses V-belt drive or chain drive. However, the elastic sliding of V-belt drive and the noise and vibration in chain drive greatly affect the performance of mechanical equipment. Therefore, in high-speed equipment, CNC machine tools, Synchronous belt drive is widely used in the robotics industry, automobile industry, and textile industry. Bevel gear transmission is used for transmission and reversal, and is commonly used in mechanical transmission.
