Mechanical double-overrunning clutch adaptive automatic transmission external motor drive axle

Abstract

The invention discloses a mechanical double-overrunning clutch adaptive automatic transmission external motor drive axle. The drive axle comprises an axle shell, a drive motor is externally arranged,a transmission system is located in the axle shell and comprises a low gear transmission mechanism, a reverse gear transmission mechanism and an adaptive transmission assembly; the reverse gear mechanism has a transmission ratio I which transmits a reverse gear power from an auxiliary shaft to a main shaft, the low gear transmission mechanism has a transmission ration II which transmits a low gearpower from the auxiliary shaft to the main shaft, and the transmission ratio I is greater than or equal to the transmission ratio II. According to the mechanical double-overrunning clutch adaptive automatic transmission external motor drive axle, reasonable cooperation of two overrunning clutches is utilized, so that the overall structure is simple and compact, a transmission line is shared by reverse gear transmission, low gear transmission and fast gear transmission, and no interference is produced, the overall performance is ensured, the adaptive capacity is relatively strong, the cooperation with the adaptive automatic transmission mechanism is smooth and natural, the overall efficiency is improved, the whole transmission system is located in the axle shell, the overall structure is compact, the strength and rigidity of the whole axle is improved, and the occupying 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 external motor 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...

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Problems solved by technology

[0014] In view of this, the purpose of the present invention is to provide a mechanical dual overrunning clutch self-adaptive automatic variable-speed external motor drive axle, adding a reverse gear 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 certain 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 with the cam adaptive automatic transmission mechanism Naturally, reduce the manufacturing cost and ensure the stability of the transmission

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