Universal joint classification
发布时间：2016.01.16 新闻来源：邢台远拓汽车零部件制造有限公司
A universal joint with no apparent elasticity in the torsion direction. It can be divided into non constant velocity universal joint, quasi constant velocity universal joint and constant velocity universal joint.
Unequal velocity universal joint. The joint angle of the two axis joint of the universal joint is greater than zero, and the output shaft and the input shaft change with the instantaneous angular velocity than the universal joint that transmits the motion but the average angular velocity is equal.
A universal coupling
A universal coupling
The cross shaft type rigid universal joint is composed of a universal joint, a fork, a cross shaft, a needle roller bearing, an oil seal, a cover sleeve, a bearing cover, etc.. The working principle is that one of the rotating forks is driven by a cross shaft to rotate the other fork, and the center of the cross shaft can swing in any direction at the same time. In the process of rotation, the needle roller in the needle roller bearing can be rotated in order to reduce friction. The shaft connected with the input power is called the input shaft (also known as the driving shaft). The shaft output by the cardan joint is called the output shaft (also known as the driven shaft). Under the condition that there is an angle between the input shaft and the output shaft, the angular speed of the two shafts is unequal, and therefore, the output shaft and the driving component connected with it can generate torsional vibration and affect the service life of the components.
Quasi constant velocity universal joint. A universal joint that transmits motion at an equal instantaneous angular speed at a design angle and transmits motion at approximately equal instantaneous angular velocity at other angles. It is divided into: a) double linked quasi constant velocity universal joint. A universal joint whose length of transmission shaft is shortened to the minimum in the constant speed gear of the universal joint. B) block type quasi constant velocity universal joint. The utility model is composed of two universal joints and two convex blocks with different shapes. The two convex block is equal to the middle drive shaft and the two cross pin of the universal universal joint device. C) three pin type constant velocity universal joint. The utility model is composed of two three pin shafts, an active eccentric shaft fork and a driven eccentric shaft fork. (d) spherical roller type quasi constant velocity universal joint. The utility model is composed of a pin shaft, a spherical roller, a universal joint shaft and a cylinder. The roller can move axially in the groove, and can act as a telescopic spline. The roller contacts the groove wall to transfer torque.
The cardan shaft connected to the output shaft and the input shaft of the constant velocity universal joint is delivered at a constant instantaneous angular velocity. It is divided into:
A) ball type constant velocity universal joint. A universal joint consisting of a ball fork and a steel ball with a raceway. Among them, the arc groove, raceway type, ball fork type universal joint refers to the ball shaped raceway in the ball sense, which is circular arc type universal joint. The utility model is characterized in that an arc groove is arranged on the active fork and the driven fork of the ball fork, and four steel ball raceways are formed after the two are combined, and 4 steel balls are contained in the raceway. The centering steel ball is arranged in the spherical groove of the center of the main and driven fork. The straight groove raceway type ball joint is the universal joint of the ball groove of the ball fork, which is straight groove and raceway type. The utility model is characterized in that a straight groove is arranged on the two ball forks, each straight groove is inclined with the central line of the shaft, and the angles of the inclination are the same, and each other is symmetrical. 4 steel balls are arranged in the raceway between the two ball forks.
B) Rezzpa universal joint. According to whether the gimbal axial movement, and can be divided into axial telescopic type (not fixed) rzeppaconstantvelocity joint and telescopic rzeppaconstantvelocity joint. The structure within the inner surface of star shaped fixed type rzeppaconstantvelocity joint of the spline connected with the transmission shaft, its exterior surface has 6 arc-shaped grooves as ball inner raceway, outer raceway on the inner surface of the spherical shell. 1 steel balls are arranged in each of the 6 raceways formed by the packing of the star sleeve and the spherical shell, and the 6 balls are in the same plane by the cage (cage). The power is transmitted from the transmission shaft through the steel ball and spherical shell (Fig. 2). Can the structure characteristics of the telescopic rzeppaconstantvelocity joint is in a cylindrical shell and the inner wall of the external cylindrical inner straight groove, in the two formed with the raceway inside the ball. The steel ball is also installed in the hole of the cage. The star sleeve bore is splined to connect to the input shaft. This structure allows the star sleeve to move relative to the simple shell in the axial direction
Flexible universal joint
Flexible joint: a universal joint with a substantially flexible joint in the reverse direction.
The flexible universal joint is mainly composed of rubber elastic elements (rubber plate, rubber block, rubber ring, rubber metal sleeve, etc.), bushing, bolt and centering device in order to ensure the dynamic balance at high speed. Its working principle is when the torque acting on the input shaft, the torque by three input shaft, universal joint fork flange and the connecting bolts, then to a piece of rubber. After the rubber block torque and the role of the cardan flange on the output shaft of the righteous. Because the rubber block is elastic, it allows the two shafts to have a certain angle.
