Mechanical double overrunning clutch adaptive automatic variable speed electric drive axle

Abstract

The invention discloses a mechanical dual overrunning clutch self-adaptive automatic variable-speed electric drive axle, comprising an axle housing, a transmission system and a drive motor are located in the axle housing, including a low-speed transmission mechanism, a reverse transmission mechanism and an adaptive transmission assembly ;The reverse gear transmission mechanism has a transmission ratio I that transmits the reverse gear power from the layshaft to the hollow main shaft, and the low gear transmission mechanism has a transmission ratio II that transmits the low gear power from the layshaft to the hollow main shaft, and the transmission ratio I is greater than or equal to the transmission ratio II; the present invention utilizes the reasonable cooperation of two overrunning clutches to make the overall structure simple and compact, and the reverse gear transmission shares the transmission route with the low gear and fast gear transmission without interference, ensuring the overall performance and strong adaptability, which is compatible with self-adaptive The automatic transmission mechanism cooperates smoothly and naturally, which improves the overall efficiency. The entire transmission system and the drive motor are located in the axle housing, the overall structure is compact, and the strength and rigidity of the overall bridge are improved, and the occupied volume is small.

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. 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 increases the m...

AI Technical Summary

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, adding a reverse gear transmission mechanism with strong adaptability, the device can not only adapt to changes in driving resistance without cutting off the driving force It can automatically shift gears and change gears under normal conditions, 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 cooperates smoothly and naturally with the cam adaptive automatic transmission mechanism , reduce manufacturing cost and ensure the stability of transmission

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