Six-gear single-middle-shaft transmission

Abstract

The invention relates to a six-gear single-middle-shaft transmission. The six-gear single-middle-shaft transmission comprises a middle shaft and an input shaft integrated with an input gear. The input gear is constantly meshed with a middle shaft transmission gear mounted at the front end of the middle shaft, a main shaft is mounted above the middle shaft, a middle shaft gear on the middle shaft is constantly meshed with a main shaft gear on the main shaft, and the rear end of the main shaft is connected with an output flange disc; the main shaft gear comprises a first-gear gear, a second-gear gear, a third-gear gear, a fourth-gear gear, a fifth-gear gear, a sixth-gear gear and a reverse-gear gear, and synchronizers are mounted between the first-gear gear and the second-gear gear, between the third-gear gear and the fourth-gear gear, and between the fifth-gear gear and the sixth-gear gear; gear shifting forks are arranged on synchronizer sliding sleeves on the synchronizers and a reverse-gear sliding sleeve on the reverse-gear gear in a straddling manner; a pull plate is clamped to the upper ends of the gear shifting forks and is connected with a control mechanism; and the pull plate is mounted on a shell through a supporting structure. The pull plate connected with the control structure is arranged to form a pull plate type control execution mechanism, the gear shifting performance is good, shell casting difficulties and the casting failure ratio are reduced, and meanwhile the boundary dimension is reduced.

Description

【Technical field】 [0001] The invention relates to the field of transmissions, in particular to a six-speed single intermediate shaft transmission. 【Background technique】 [0002] There are usually two types of arrangement of transmission shafts: two-shaft and three-shaft. Usually, rear-wheel drive vehicles will use a three-shaft transmission, that is, an input shaft, an output shaft and an intermediate shaft. The front end of the input shaft is connected with the engine by a clutch, and the rear end of the output shaft is connected with the universal transmission device through a flange. The shaft passes through the intermediate shaft to the output shaft. [0003] At present, the domestic and foreign high-end light and medium-duty truck and bus markets are dominated by five-speed or six-speed single countershaft transmissions. Traditional single countershaft transmissions have large dimensions, heavy weight, low carrying capacity, high noise, and heavy shifting. It cannot ...

AI Technical Summary

Problems solved by technology

[0003] At present, the domestic and foreign high-end light and medium-duty truck and bus markets are dominated by five-speed or six-speed single countershaft transmissions. Traditional single countershaft transmissions have large dimensions, heavy weight, low carrying capacity, high noise, and heavy shifting.

It cannot adapt to the characteristics of good matching performance, high economy and excellent driving comfort required by today's high-end light and medium-duty trucks and buses

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