Composition and Application of Automobile Drive Shaft
A sliding spline composed of a sliding fork and a spline shaft is generally provided in the transmission shaft to achieve a change in the transmission length. In order to reduce the axial sliding resistance and wear of the sliding spline, the spline teeth are sometimes phosphated or sprayed with a nylon layer; others are placed in a spline groove by rolling elements such as needle rollers, rollers or balls to roll Friction instead of sliding friction improves transmission efficiency. However, this structure is more complicated and costly. Sometimes a transmission shaft with elasticity is used for transmissions with severe impact loads. The spline on the drive shaft should be lubricated and dustproof. The spline tooth and keyway clearance should not be too large, and should be assembled according to the corresponding mark to avoid the wrong balance of the drive shaft assembly.
The length and angle of the drive shaft and their range of variation are determined by the overall layout of the car. It should be designed so that when the length of the drive shaft is at the maximum value, the spline sleeve has sufficient mating length with the shaft; and when the length is at the minimum, it does not die. The angle of the drive shaft directly affects the life of the universal joint cross shaft and needle bearing, the efficiency of the universal joint drive and the non-uniformity of the rotation of the cross shaft.
The drive shaft is used in various host products, and the surrounding working environment is relatively complex, such as temperature, humidity, water, steam, dust, sand, oil, acid, alkali, corrosive medium, salt water, radiation, etc. One of the important factors that must be considered when using the device. For the working quality of high temperature, low temperature, oil, acid and alkali medium, it is not suitable to use flexible coupling with general rubber as elastic material. The flexible coupling of metal elastic component, such as diaphragm coupling, should be selected. Serpentine spring coupling, etc.