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Multi-speed gearbox transmission mechanism

A technology of transmission mechanism and transmission, which is applied in the direction of transmission device, gear transmission device, mechanical equipment, etc. It can solve the problems of automobile power performance, unsatisfactory economy, unfavorable layout design of automobile structure, and large changes in engine speed. Achieve the effects of flexible structural layout design, ideal economy, and improved smoothness of shifting

Inactive Publication Date: 2013-12-11
SHUNDE POLYTECHNIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the parallel shaft dual clutch transmission must use a separate reverse shaft and reverse gear
When one output shaft is used, the axial size of the transmission is large; when two output shafts are used, the radial size of the transmission is large and takes up a lot of space, which is not conducive to the structural layout design of the car
At present, the forward gear of the dual-clutch transmission adopts 7 gears at most, and the most widely used is the 6th gear, and the speed ratio changes greatly. In this way, the engine speed changes greatly when changing gears, which makes the power and economy of the car not very ideal. poor ride quality

Method used

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  • Multi-speed gearbox transmission mechanism

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example （ 7

[0018] see figure 1 , the dual clutch of the present invention comprises a dual clutch assembly 1 (comprising a first clutch 2 and a second clutch 3, respectively corresponding to the first input shaft 4 and the second input shaft 5 of the two clutches, the first double-row planetary gear train 181, the second Two double-row planetary gear trains 182, output shaft 8 and multiple synchronizers. The first double-row planetary gear train and the second double-row planetary gear train are arranged in a vertical structure, and the first double-row planetary gear train adopts new double planetary gears Transmission mechanism, the second double-row planetary gear train adopts CR-CR gear transmission mechanism, the first double-row planetary gear train includes the first planetary row X1 and the second planetary row X2, and the second double-row planetary gear train includes the third planetary gear row X3 and the fourth planet row X4.

[0019] The front sun gear 105 and the rear pla...

no. 2 example （ 6

[0046] see figure 2 , on the basis of the first embodiment, the positions of the first double-row planetary gear train and the second double-row planetary gear train are interchanged, the second constant mesh synchronizer 135 is canceled, and the dual-clutch assembly 1 is set in the first double-row planetary gear train On the right side of the planetary gear train 181 , the output shaft 8 is arranged on the first double-row planetary gear train 181 on the same axis as the dual clutch assembly 1 but on a different side. According to the transmission ratio setting of gears, the transmission ratios of the first gear 161 and the second gear 162 , the third gear 163 and the fourth gear 164 , and the value a of each planetary row need to be appropriately changed. The first double-row planetary gear train 181 realizes 1.3.5 and reverse gears like this, and the second double-row planetary gear train 182 realizes 2.4.6 gears.

[0047] It can be known from the above embodiments that ...

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Abstract

The invention discloses a multi-speed gearbox transmission mechanism which comprises a first clutch, a first input shaft corresponding to the first clutch, a second clutch, a second input shaft corresponding to the second clutch, a plurality of synchronizers, a first double-row planetary gear train and a second double-row planetary gear train, wherein one of the first double-row planetary gear train and the second double-row planetary gear train is formed by a front planet row and a rear planet row; in the front planet row, a front sun gear is connected with a rear planet carrier into a whole, and is fixed with a shell by the first constant mesh synchronizer or the clutches; the rear planet row adopts a double-planet wheel structure; a front gear ring is connected with a rear gear ring into a whole; the power is transmitted into a rear sun gear or the rear gear ring by the second synchronizer, the third synchronizer or the clutches through a first rear outer shaft, and is output by a front planet carrier. The multi-speed gearbox transmission mechanism combines a CR-CR type gear speed change mechanism and a novel double-planet row gear speed change mechanism, and the two clutches and the plurality of synchronizers are matched for use, so that the gear shift performance of a double-clutch gearbox can be realized, the size of the gearbox is reduced, and the gear shift smoothness is also improved.

Description

technical field [0001] The invention relates to the technical field of automobile transmissions, in particular to a multi-speed transmission transmission mechanism. Background technique [0002] According to the different types of wheel trains used, there are two types of axle-connected transmissions (parallel shaft transmissions) and axial rotary transmissions (planetary gear transmissions). According to the number of clutches, it can be divided into single-clutch transmission and dual-clutch transmission. The power transmission mechanism of the current dual-clutch transmission is a parallel shaft transmission. The power transmission is divided into two routes, one is the odd-numbered gear transmission route, and the other is the even-numbered gear transmission route. The two power transmission routes pass through the first and second clutches respectively. Connect the first and second input shafts, and then output the power through the transmission gears on the driven sha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H3/62
Inventor 赵良红范爱民吴峰罗子聪陈增强
Owner SHUNDE POLYTECHNIC
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