Multistage transmission

A transmission and clutch technology, applied in the direction of gear transmission, belt/chain/gear, mechanical equipment, etc., can solve the problems of reducing the volume and weight, shortening the axial length, etc., and achieve the effect of shortening the axial length and reducing the sliding loss.

Inactive Publication Date: 2012-08-01
广州科立源机电科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Chinese Patent Publication No. CN101275630 "power-shiftable multi-speed transmission", CN101720395A "power-switchable multi-stage transmission", CN101334094 "eight-speed transmission with planetary gear device and countershaft gear device", CN101392817, CN101392819 "Eight-stage transmission" is a variation of a type of transmission with four planetary gear sets and five shifting elements. The planetary gear sets and shifting elements are arranged on two axes and transmitted between the shafts through the external gear set. Power, this type of transmission reduces one planetary gear set, shortens the axial length, and is suitable for vehicles with laterally arranged transmissions, but at the same time increases three external gear sets, and its volume and weight do not decrease

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0036] Embodiment one: if Figure 4 , implemented according to technical solution 1; the transmission shaft connected to the input member 1 of the transmission constitutes the first power transmission mechanism 100; the second power transmission mechanism 200 is composed of a double pinion type planetary gear set 120, and its sun gear The input part 201 constituting the second power transmission mechanism 200, and the ring gear constitute the output part 202 of the second power transmission mechanism 200, and its planet carrier is connected with the transmission housing 5, and the ring gear of the planetary gear set 120 is connected to the input 1 of the transmission. Fixed transmission ratio; the first planetary gear set 10 is a single pinion planetary gear set 10_1, the ring gear of which constitutes the first rotating element 11, the sun gear constitutes the second rotating element 12, and the planetary carrier constitutes the third rotating element 13 ; The second planetar...

Embodiment 2

[0040] Embodiment two: if Figure 5 , which is a two-shaft arrangement in Embodiment 1; the first and second power transmission mechanisms 100 and 200 are each a gear set composed of a pair of intermeshing driving and driven gears, and the first and second power transmission mechanisms The driving gears 105, 205 or the connecting shafts of the gears of the transmission mechanisms 100, 200 respectively constitute the respective input components 101, 201 of the first and second power transmission mechanisms 100, 200, and the first and second power transmission mechanisms 100, 200 The respective driven gears 106, 206 or the connecting shafts of the gears constitute the respective output members 102, 202 of the first and second power transmission mechanisms 100, 200; the first and second planetary gear sets 10, 20 and the The first and second clutch shift elements 31, 32 are the same as the first embodiment, and are arranged on the axes of the driven gears 106, 206. The third, fou...

Embodiment 3

[0041] Embodiment three: as Image 6 , implemented according to technical solution 1; the first and second power transmission mechanisms 100, 200 are the same as the first embodiment; The rotating part 11, the sun gear constitute the second rotating part 12, and the ring gear constitutes the third rotating part 13; the second planetary gear set 20 is a double pinion type planetary gear set 20_2, and its planetary carrier constitutes the first rotating part 21, The sun gear constitutes the second rotating part 22, and the ring gear constitutes the third rotating part 23; each clutch shifting element is also the same as in Embodiment 1; the following is a gear table for each planetary gear set with an appropriate gear ratio:

[0042]

[0043] K 10 =3.600,K 20 =2.333, K 120 =2.250

[0044]Referring to Embodiment 2, this embodiment can also be changed to a two-axis arrangement.

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Abstract

The invention discloses a multistage automatic transmission for a vehicle. The transmission comprises two or three power transmission mechanisms in the front, two planet rows and five or six gear shifting elements; the third rotary component of the second planet row is connected with an output; the first rotary components of the first and second planet rows are interconnected; the first and second gear shifting elements are connected in series between the second rotary component of the second planet row and the second and third rotary components of the first planet row in turn; the third gearshifting element is connected in series on the route of transmitting an input power to the third rotary component of the first planet row from the first power transmission mechanism; the fifth and sixth gear shifting elements are connected in series on the route of transmitting the input power to the first and second rotary components of the first planet row through the second power transmission mechanism or the second and third power transmission mechanisms in turn; and the fourth gear shifting element can selectively brake the third rotary component of the first planet row. The transmissionis provided with five or eight forward gears, each gear is combined with three gear shifting elements, and the gears can be arranged on split shafts so that the length of the gears is shortened and the gears are suitable for driving the vehicle forwards.

Description

technical field [0001] The present invention relates to the field of multi-stage transmissions for vehicles, in particular to multi-stage automatic transmissions comprising a plurality of planetary gear sets and shift elements. Background technique [0002] The automatic transmission has gradually developed from the early three-stage and four-stage transmission to five-stage, six-stage or more stages, and at the same time, the complexity and volume weight have also increased. The traditional four-stage transmission generally includes two planetary gear sets, five Or more shifting elements (clutches and brakes), the traditional five-speed transmission is generally formed by adding a planetary gear set and one or more shifting elements on the basis of the four-stage transmission. Traditional transmissions of this type only combine two shifting elements for each gear position, and other shifting elements are in a separated sliding state. Too many shifting elements in a separate...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H3/44
Inventor 黄庆培
Owner 广州科立源机电科技有限公司
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