Mechanical type dual-overrun clutch self-adaptive automatic transmission axle with planetary system for input

Abstract

The invention discloses a mechanical type dual-overrun clutch self-adaptive automatic transmission axle with a planetary system for input. The mechanical type dual-overrun clutch self-adaptive automatic transmission axle with the planetary system for input comprises a drive axle shell body and a planetary gear train used for inputting power, wherein a drive motor and a speed control system are both located in the drive axle shell body, and the speed control system comprises a low-speed gear drive mechanism, a reverse gear drive mechanism and a self-adaptive transmission assembly; and the reverse gear drive mechanism has a drive ratio I transmitting reverse gear power from a countershaft to a hollow main shaft, the low-speed gear drive mechanism has a drive ratio II transmitting low-speed gear power from the countershaft to the hollow main shaft, and the drive ratio I is larger than or equal to the drive ratio II. According to the mechanical type dual-overrun clutch self-adaptive automatic transmission axle with the planetary system for input, the overall structure is simple and compact, the reverse gear drive, the low-speed gear drive and the high-speed gear drive use a drive routein common, the adaptive capacity is high, the cooperation is smooth and natural, and the overall efficiency is improved; the whole speed control system and the drive motor are both located in the drive axle shell body, the overall structure is compact, and the strength and the stiffness of the overall axle are improved; and the occupied area is small, planetary deceleration input is adopted, thetorque can be improved, and a high-speed motor can be adopted as a power source.

Description

technical field [0001] The invention relates to a motor vehicle transmission, in particular to a planetary input mechanical double-overrunning clutch self-adaptive automatic variable-speed electric drive axle. 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 increased, which...

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Problems solved by technology

[0014] In view of this, the purpose of the present invention is to provide a mechanical double overrunning clutch self-adaptive automatic variable speed electric drive axle with planetary system input, adding a reverse gear mechanism with strong adaptability, the device can not only adapt to changes in driving resistance without cutting 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

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