Gearbox gear shifting executing mechanism

Abstract

The invention discloses a gearbox gear shifting executing mechanism which is characterized in that a shifting fork shaft is installed on the right side in a shell, a gear shifting fork is installed on the shifting fork shaft, a first cavity, a second cavity and a third cavity are formed in the shell, a first piston is arranged between the first cavity and the second cavity, and a second piston is arranged between the second cavity and the third cavity; the first piston and the second piston are coaxially arranged, the first piston is connected with the shifting fork shaft, the second piston is installed on the left side in the shell, an air port B, an air port F and an air port M are formed in the shell, the air port B is communicated with the first cavity, the air port F is communicated with the second cavity, and the air port M is communicated with the third cavity. Automatic gear shifting of the gearbox is achieved through the air source, the gear selecting and shifting response and precision of the automatic gearbox are improved, the structure is ingenious, and practicability is high.

Description

technical field [0001] The invention relates to the field of machinery, in particular to a gear shifting actuator of a gearbox. Background technique [0002] Transmission has the characteristics of high efficiency, low cost and mature production technology, and still occupies a large market share. However, the manual transmission has defects such as difficulty in shifting, power interruption, and the driver's level has a great influence on the driving performance of the vehicle. Moreover, due to the frequent operation of manual shifting, it is easy to cause driver fatigue and increase the unsafe factor of driving. Therefore, the automatic transmission replaces the manual transmission to become the mainstream, but the automatic transmission brings comfort and convenience, but also has the disadvantages of high fuel consumption, high cost and difficult maintenance. In this environment, the electronically controlled mechanical automatic transmission (AMT) should be used. and l...

AI Technical Summary

Problems solved by technology

However, manual transmissions have defects such as difficulty in shifting gears, power interruption, and the driver's level has a greater impact on vehicle driving performance. Moreover, frequent operations of manual shifting can easily cause driver fatigue and increase the unsafe factors of driving.

Therefore, automatic transmission has become the mainstream instead of manual transmission, but automatic transmission brings comfort and convenience, but also has the disadvantages of high fuel consumption, high cost, and difficult maintenance. In this environment, electromechanical automatic transmission (AMT) should be used born

[0003] At present, the gear selection motor of the automatic transmission uses a permanent magnet synchronous brushless DC motor to output the mechanical action as a rotary motion, which needs to be converted into a linear motion through a mechanical structure for gear selection, resulting in slow shift response and low mechanical efficiency. question

[0004] To sum up, in the prior art, there is still no effective solution to the problem of how to improve the shift response and precision of automatic transmissions.

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