Novel multi-gear transmission

Abstract

The invention provides a novel multi-gear transmission and belongs to the technical field of transmissions. The novel multi-gear transmission solves the problems that an existing multi-gear transmission is complicated in structure and large in manufacturing difficulty. The novel multi-gear transmission comprises an input shaft, a middle shaft and output shaft, wherein the middle shaft is parallelto the input shaft, the output shaft and the input shaft are coaxially arranged, a reverse gear structure, a first first-grade speed reduction structure, a second first-grade speed reduction structure, a third first-grade speed reduction structure, a fourth first-grade speed reduction structure are sequentially arranged between the input shaft and the middle shaft, a first second-grade speed reduction structure and a second second-grade speed reduction structure are arranged between the middle shaft and the output shaft, a first synchronous structure is arranged between the first second-gradespeed reduction structure and the second second-grade speed reduction structure, a second synchronous structure is arranged between the fourth first-grade speed reduction structure and the first second-grade speed reduction structure, a third synchronous structure is arranged between the second first-grade speed reduction structure and the third first-grade speed reduction structure, and a fourthsynchronous structure is arranged between the reverse gear structure and the first first-grade speed reduction structure. The novel multi-gear transmission has the advantages of being simple and compact in structure, low in cost and the like.

Description

technical field [0001] The invention belongs to the technical field of transmissions, and relates to a novel multi-speed transmission, in particular to a novel multi-speed transmission with nine forward gears and two reverse gears. Background technique [0002] Usually, multi-speed transmission, especially nine-speed transmission, mostly realizes multi-speed transmission by multiple planetary gear sets and friction elements, such as the multi-speed transmission (authorization notification number CN101109433A) of ZF Friedrichshafen Company; Some multi-speed transmissions are realized by elements such as multiple clutches, synchronizers and hollow gear shafts, such as the nine-speed dual-clutch transmission (authorized announcement number CN 105465295A) of Beijing Institute of Technology. The multi-speed transmissions of these structures are complex in structure and difficult to manufacture. Difficult and costly. Contents of the invention [0003] The object of the present ...

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Problems solved by technology

[0002] Usually, multi-speed transmission, especially nine-speed transmission, mostly realizes multi-speed transmission by multiple planetary gear sets and friction elements, such as the multi-speed transmission (authorization notification number CN101109433A) of ZF Friedrichshafen Company; Some multi-speed transmissions are realized by elements such as multiple clutches, synchronizers and hollow gear shafts, such as the nine-speed dual-clutch transmission (authorized announcement number CN 105465295A) of Beijing Institute of Technology. The multi-speed transmissions of these structures are complex in structure and difficult to manufacture. Difficult and costly

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