Mechanical double-override clutch-adaptive automatic-transmission electric drive axle based on planetary system output

Abstract

The invention discloses a mechanical double-override clutch-adaptive automatic-transmission electric drive axle based on planetary system output. The mechanical double-override clutch-adaptive automatic-transmission electric drive axle comprises a drive axle shell and a planetary gear train. A driving motor and a transmission system are located in the axle shell. The transmission system comprisesa low-speed transmission mechanism, a reverse gear transmission mechanism and a self-adaptive transmission component. The reverse gear transmission mechanism has a transmission ratio I for transmitting the reverse gear power from an auxiliary shaft to a hollow main shaft, the low-speed transmission mechanism has a transmission ratio II for transmitting the low-speed gear power from the auxiliary shaft to the hollow main shaft, and the transmission ratio II is greater than the transmission ratio I. The mechanical double-override clutch-adaptive automatic-transmission electric drive axle has theadvantages that the integral structure is simple and compact, the reverse gear transmission and the low-speed and high-speed gear transmission share a transmission line, the adaptive capacity is high, smooth and natural coordination is realized, and the overall efficiency is improved; the whole transmission system and the driving motor are arranged in the axle shell, the overall structure is compact, the strength and stiffness of the overall axle are improved, and the occupied space is small; planetary deceleration output is adopted, and accordingly, the output torque can be increased; the high-speed motor can be used as a power source.

Description

technical field [0001] The invention relates to a motor vehicle transmission, in particular to a mechanical double-overrunning clutch self-adaptive automatic variable-speed electric drive axle output by a planetary system. Background technique [0002] The working conditions of mechanical transmission systems are generally complex, and torque needs to be distributed to realize the transmission of different loads and speeds. Taking electric vehicles as an example, the driving environment is complex and changeable. Moreover, the electric drive method commonly used in existing electric vehicles is a motor-driven fixed-speed ratio, and the reasonable range of high efficiency is narrow and limited, resulting in a vicious circle, resulting in the following problems: [0003] 1. It can only work within the torque range of a certain working condition. [0004] 2. In order to meet the road conditions under the condition of constant speed ratio, the speed of the motor can only be inc...

AI Technical Summary

Problems solved by technology

[0014] In view of this, the object of the present invention is to provide a mechanical dual overrunning clutch self-adaptive automatic variable speed electric drive axle output by a planetary system, adding a reverse gear mechanism with strong adaptability, and the device can not only adapt to changes in driving resistance without cutting off Under the condition of driving force, it can automatically shift gears and change gears, and can solve the problem of high-efficiency road forward and reverse driving under complex conditions under two-way driving conditions, and the setting is simple and compact, and the cam adaptive automatic transmission mechanism Cooperate smoothly and naturally, reduce manufacturing cost and ensure the stability of transmission

Images