The automobile transmission shaft structure is composed of a shaft tube, an expansion sleeve and a universal joint. The combination of a universal joint and a drive shaft is called a universal joint transmission.
shaft tube
1. In order to reduce friction and wear during shaft movement, the purpose is the same as that of bearings, and the cost is cheaper, but the friction resistance is large, so it will only be suitable for some components;
2. The shaft sleeve is mostly placed in the shaft and supporting structure, and is very close to the supporting structure. Only the shaft can rotate on the shaft sleeve;
3. When assembling the shaft and sleeve, lubricant will be added between the two to reduce the friction generated when they rotate.
telescopic sleeve
1. The telescopic sleeve can automatically adjust the change of the distance between the transmission and the drive axle;
2. The new transmission shaft welds the spline sleeve and the transmission shaft tube into one body, and integrates the spline shaft and the flange fork into one body;
3. Change the rectangular tooth spline into a large pressure angle involute short tooth spline, which not only increases the strength, but also facilitates extrusion forming, and meets the needs of high torque working conditions;
4. The tooth surfaces of the telescopic sleeve and spline shaft are coated with a layer of nylon material as a whole, which increases the smoothness and lubricity, reduces the damage caused by impact load to the transmission shaft, and improves the buffering capacity.
Universal joint
1. The universal joint ensures the change of the angle between the two axes of the transmission output shaft and the drive axle input shaft, and realizes equal angular speed transmission of the two axes;
2. Universal joints, or universal joints, are parts that realize variable angle power transmission. They are used to change the position of the transmission shaft direction. They are the "joint" component of the universal transmission of the automobile drive system;
3. The universal joint is a component that changes the direction of force transmission. Its function is a bit like the joint of the human body's limbs. It allows the included angle between the connected parts to change within a certain range. If it is worn and deformed, it will produce abnormal noises and vibrations. If the power transmission device is interrupted;
4. The universal joint transmission form of rear-drive vehicles adopts double universal joints, that is, there is a universal joint at both ends of the transmission shaft. Its role is to make the included angles between the two ends of the transmission shaft equal, thus ensuring the instantaneous angular speed between the output shaft and the input shaft. Always equal;
The propeller shaft is an important component that transmits power in the automobile transmission system. Its role is to transmit the power of the engine to the wheels together with the gearbox and drive axle, allowing the automobile to generate driving force.
