Planetary system input mechanical double overrunning clutch adaptive automatic transmission electric transaxle

Abstract

The invention discloses a mechanical double overrunning clutch self-adaptive automatic transmission electric drive axle with planetary system input, which comprises a drive axle housing and a planetary gear system for inputting power. The system includes a low-speed gear transmission mechanism, a reverse gear transmission mechanism and an adaptive transmission assembly; the reverse gear transmission mechanism has a transmission ratio I for transmitting the reverse gear power from the countershaft to the hollow main shaft, and the low-speed gear transmission mechanism has the function of transmitting the low-speed gear power from the countershaft. The transmission ratio II transmitted to the hollow main shaft, the transmission ratio I is greater than or equal to the transmission ratio II; the overall structure of the present invention is simple and compact, the reverse gear transmission, the low-speed gear and the fast-speed transmission share the same transmission route, the adaptability is strong, the coordination is smooth and natural, and the overall Efficiency, the entire speed change system and the drive motor are located in the axle housing, the overall structure is compact, and the strength and rigidity of the overall axle are improved, occupying a small volume, using planetary deceleration input, which can increase the torque, and can use a high-speed motor 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 transmission electric drive axle with planetary system input. Background technique [0002] The mechanical transmission system generally has complex working conditions, and needs to allocate torque to realize the transmission of different loads and speeds. Taking electric vehicles as an example, the driving environment is complex and changeable. In addition, the electric drive method commonly used in the existing electric vehicles is that the motor drives the constant speed ratio, and the high efficiency and reasonable range are 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 o...

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Problems solved by technology

[0014] In view of this, the object 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 transmission mechanism with strong adaptability, and the device can not only adapt itself to changes in driving resistance When the driving force is cut off, 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 it can automatically change gears with cam self-adaptation The mechanism fits smoothly and naturally, reducing manufacturing costs and ensuring the stability of transmission

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