The cross shaft 5-153X GU1000 PRECISION 369 universal joint can achieve constant speed transmission between the two shafts, that is, the output shaft of the transmission and the input shaft of the drive axle is conditional. First, the assembly guarantees that the driven fork of the first universal joint is in the same plane as the active fork of the second universal joint. However, when the non-independent suspension is used, the relative position of the transmission and the main speed reducer is constantly changing. This condition is difficult to meet, and the unequal speed can only be achieved as small as possible. Second, the design ensures that the angle between the two shafts of the first universal joint is equal to the angle between the two shafts of the second universal joint.

The unequal speed of the universal joint of the cross shaft means that the angular speed of the driven shaft is uneven in a week. If the driving shaft rotates at an equal angular speed, the speed of the driven shaft is fast and slow, that is, the angle of a single universal joint of the universal shaft is at an angle. Unequal speed of the transmission.

The working principle of the cross shaft type rigid universal joint refers to when the active fork is in a vertical position and the plane of the cross shaft is perpendicular to the active shaft. At this time, the linear velocity of the connection point a of the driving fork and the cross shaft and the connection point b of the driven fork and the cross shaft on the plane of the cross shaft are equal. When the velocity of the driven fork is projected on the plane of 3102-2201025 Russian universal joint cross axis, the drive fork is in a horizontal position, and the plane of the cross axis is perpendicular to the driven axis. The relationship between the speed projection of the active fork to the plane of the cross axis and the rotation speed of the main and driven shafts. The greater the intersection angle of the two shafts, the greater the speed, and the worse the unequal speed of the transmission shaft.