The structure and function of universal joints


   The structure and function of the joint is somewhat like the joints on the human limbs, which allow the angle between the connected parts to vary within a certain range. In order to meet the power transmission, to adapt to the steering and the car running when the upper and lower beats caused by the angle of change, the front drive the car drive axle, axle and axle commonly used between the universal joint connected. But due to the axial size limit, the requirements of the angle is relatively large, a single universal joint can not make the output shaft and shaft into the shaft instantaneous angular velocity equal to easy to cause vibration, exacerbate the damage to parts and produce a lot of noise, So widely used in a wide range of constant velocity universal joints. In the front drive car, each axle with two constant velocity universal joint, near the variable speed drive bridge universal joint is the axle inside the universal joint, near the axle is the axle outside universal joint. In the rear drive car, the engine, the clutch and the transmission are installed as a unit on the frame, and the drive axle is connected with the frame by means of a flexible suspension, and there is a distance between the two. The unevenness of the road in the car running, the change of the load or the difference in the installation of the two assemblies will cause the angle and distance between the output shaft of the transmission output shaft and the main axle of the drive axle to change. Therefore, Universal joint transmission form are double universal joint, that is, both ends of the drive shaft have a universal joint, its role is to make the shaft at both ends of the same angle, so as to ensure that the output shaft and input shaft instantaneous angular velocity is always