Three-shaft six-gear manual gearbox

Abstract

The invention discloses a three-shaft six-gear manual gearbox which comprises an input shaft, an output shaft and a reverse gear shaft. The input shaft is provided with multiple gear driving gears, the output shaft is provided with multiple gear driven gears and a speed reduction gear, the gear driven gears are meshed with the gear driving gears, the reverse gear shaft is fixedly provided with a reverse gear driving gear and is sleeved with a reverse gear driven gear, and the reverse gear driven gear is connected with a reverse gear synchronizer. The gearbox further comprises an intermediate shaft provided with multiple gear driving gears meshed with the gear driven gears. The output shaft, the intermediate shaft and the reverse gear shaft are arranged in parallel around the input shaft. The axial size of the designed gearbox is small, so that whole vehicle adjustment and layout are facilitated. Meanwhile, the supporting distance is short and rigidity is good. By means of reasonable design, only one output shaft and one input shaft are meshed with a speed reducer, and the intermediate shaft is only meshed with the output shaft, so that center distances between the shafts are reduced, the sizes of the meshed gears are correspondingly reduced, NVH performance is good, and carrying and light weight of a whole vehicle are facilitated.

Description

technical field [0001] The invention relates to the technical field of auto parts, in particular to a three-shaft six-speed manual gearbox. Background technique [0002] For a six-speed transmission for a car, a transverse three-shaft transmission is often used. A three-shaft gearbox has one input shaft and two output shafts. The gears can be reasonably arranged on the three shafts, so the axial dimension is small, which is conducive to the adjustment and arrangement of the whole vehicle, the supporting distance is small, and the rigidity of the gearbox is good. However, the three-axis gearbox uses two output shafts, both of which must mesh with the input shaft and the reducer gear. In order to prevent the gears on the two output shafts from interfering with each other, the center distance between the shafts must be appropriately changed. Therefore, the required meshing gears are also relatively large, resulting in heavy mass, large volume, and high noise of the gearbox, a...

AI Technical Summary

Problems solved by technology

However, the three-axis gearbox uses two output shafts, both of which must mesh with the input shaft and the reducer gear. In order to prevent the gears on the two output shafts from interfering with each other, the center distance between the shafts must be appropriately changed. Therefore, the required meshing gears are also relatively large, resulting in heavy mass, large volume, and high noise of the gearbox, and the NVH performance of the gearbox is poor

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