Mechanical double-overrunning clutch self-adaptive automatic speed change bridge for planetary system input

Abstract

The invention discloses a mechanical double-overrunning clutch self-adaptive automatic speed change bridge for planetary system input, which comprises a drive bridge shell and a planetary gear train for inputting power, wherein a speed change system is positioned in the bridge shell and comprises a low-speed gear transmission mechanism, a reverse gear transmission mechanism and a self-adaptive speed change assembly; the reverse gear mechanism has a transmission ratio I for transmitting reverse gear power from an auxiliary shaft to a hollow main shaft, and the low-speed gear mechanism has a transmission ratio II for transmitting low-speed gear power from the auxiliary shaft to the hollow main shaft, wherein the transmission ratio I is greater than or equal to the transmission ratio II; themechanical double-overrunning clutch self-adaptive automatic speed change bridge for planetary system input has the advantages that the integral structure is simple and compact, the reverse gear transmission, the low speed gear and the fast gear transmission share a transmission route, the adaptability is strong, the matching is smooth and natural, the integral efficiency is improved, the whole speed change system is positioned in the bridge shell, the integral structure is compact, the strength and the rigidity of the integral bridge are improved, the occupied volume is small, the planetary speed reduction input is adopted, the torque can be improved, and a high-speed motor can be adopted as a power source.

Description

technical field [0001] The invention relates to a transmission for a motor vehicle, in particular to a mechanical double-overrunning clutch self-adaptive automatic transmission bridge with planetary system input. 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, wh...

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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 adaptive automatic transmission bridge with planetary system input, and a reverse gear mechanism with strong adaptability is added. 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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