What kind of component is the universal joint and what is its main function? Today, Xuchang Shenbang machinery will give you an answer: universal joint is the key component of automobile transmission shaft. On rear wheel drive vehicles with front engine, the universal joint drive shaft is installed between the output shaft of the transmission and the input shaft of the main reducer of the drive axle; The front engine front wheel drive vehicles omit the transmission shaft. Xuchang Shenbang machinery tells you that the universal joint is installed between the front axle half shaft and the wheel, which is responsible for driving and steering. A car is a moving object. On the rear drive vehicle, the engine, clutch and transmission are installed on the frame as a whole, and the drive axle is connected with the frame through elastic suspension. There is a distance between them and they need to be connected. When the vehicle is running, the uneven road surface produces runout, the load change or the installation position difference of the two assemblies will change the included angle and distance between the transmission output shaft and the input shaft of the drive axle main reducer. Therefore, a "variable strain" device should be used to solve this problem, so there is a universal joint.