Vehicle rear independent main deceleration assembly

Abstract

The invention discloses a vehicle rear independent main deceleration assembly. The vehicle rear independent main deceleration assembly comprises a connecting flange, a main decelerator shell, a driving tooth, a driven tooth, a differential machine assembly, and differential semi-shafts. The connecting flange is fixed to the driving tooth. The driven tooth is engaged with and fixed to the driving tooth. The differential machine assembly comprises a differential machine shell, two semi-shaft gears, and four planetary gears. The planetary gears are perpendicular to the two semi-shaft gears. Eachplanetary gear is engaged with and connected to one lateral faces of the two semi-shaft gears separately. The planetary gears are rotatably arranged in the differential machine shell. The other lateral ends of the semi-shaft gears are separately fixedly connected with the corresponding differential semi-shafts in a detachable mode. The differential semi-shafts are separately detachably fixed to corresponding tires. The driven tooth is detachably fixed to the outer edge of the differential machine shell. According to the vehicle rear independent main deceleration assembly, the structure is simple, noise during vehicle driving can be effectively reduced, the service life of the planetary gears can be effectively prolonged, torque transmission is stable, resonance is avoided, and NVH performance and riding comfort of the whole vehicle are effectively improved.

Description

technical field [0001] The invention relates to a main speed reducer, in particular to an automobile rear independent main speed reducer assembly. Background technique [0002] The existing independent main reducer assembly is connected with two planetary gears respectively in the differential housing inside the differential housing in the differential assembly in the driving device, so that each Each planetary gear bears a relatively large force, and the main tooth converts the rapid rotation into the slow rotation of the differential half shaft, reducing the rotation speed. During this process, the torque increases and the direction of the torque is changed. The planetary gear changes the torque in the process The torque transmission is not stable, causing the two differential axle shafts connected to it to vibrate and vibrate, resulting in howling and resonance, which reduces the NVH performance and ride comfort of the vehicle. Moreover, the size of the assembly process ...

AI Technical Summary

Problems solved by technology

[0002] The existing independent main reducer assembly is connected with two planetary gears respectively in the differential housing inside the differential housing in the differential assembly in the driving device, so that each Each planetary gear bears a relatively large force, and the main tooth converts the rapid rotation into the slow rotation of the differential half shaft, reducing the rotation speed. During this process, the torque increases and the direction of the torque is changed. The planetary gear changes the torque in the process The torque transmission is not stable, which makes the two differential half shafts connected to it vibrate and vibrate, resulting in howling and resonance, which reduces the NVH performance and ride comfort of the vehicle

Moreover, the size of the assembly process hole opened on the differential housing is relatively large, which reduces the strength and rigidity of the differential housing, reduces the impact resistance of the differential housing, and reduces the impact resistance of the independent final drive assembly. overall strength and reduced service life

In addition, the traditional independent main reducer differential bearings are adjusted by adjusting shims. Once installed, it is difficult to adjust the tooth side clearance and difficult to control. If the first assembly fails, it is necessary to re-select shims of different thicknesses and disassemble them again. The installation efficiency Low, and the improper adjustment of the backlash of the teeth will lead to a deviation in the meshing position of the main teeth and the driven teeth, which will cause whistling when the car is running

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