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Transmission with at least two planet gear stages

A technology of planetary gears and planetary gear racks, which is applied to vehicle gearboxes, components with teeth, gear transmissions, etc., can solve problems such as difficult to use and insufficient installation space, and achieve the effect of reducing loads

Inactive Publication Date: 2009-07-22
ZF FRIEDRICHSHAFEN AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The known solutions have the disadvantage, on the one hand, that the gearbox has a large extension in the axial direction, which makes it difficult to use such a gearbox on vehicles that do not have a sufficiently large installation space in the axial direction

Method used

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  • Transmission with at least two planet gear stages

Examples

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Embodiment Construction

[0028] The automatic transmission 1 shown has a housing 2 which substantially encloses the transmission, and which is provided with a first opening 3 on one side and a second opening 4 on the opposite side. The gearbox 1 also includes a driving shaft 5 , which protrudes into the housing 2 through the first opening 3 ; and a driven shaft 6 protrudes from the housing 2 through the second opening 4 . The drive shaft 5 and the driven shaft 6 are arranged coaxially in sequence.

[0029] In the housing 2, a first planetary gear stage 7, a second planetary gear stage 8 and a third planetary gear stage 9 are also arranged between the driving shaft 5 and the driven shaft 6, in order to drive the driving shaft 5 The rotary motion is transmitted to the driven shaft 6. Planetary gear stages 7, 8, 9 respectively include: a sun gear 10, 11, 12; a planetary gear carrier 13, 14, 15 on which a plurality of planetary gears 16 are arranged; and an internal gear 17, 18 , 19. The planet carrier...

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Abstract

The present invention relates to a transmission having a housing (2), having a drive input shaft (5), having a drive output shaft (6) and having at least two planet gear stages (7, 8, 9) for transmitting a rotation from the drive input shaft (5) to the drive output shaft (6), wherein the planet gear stages (7, 8, 9) in each case comprise the elements of sun gear (10, 11, 12), ring gear (17, 18, 19) and planet gear carrier (13, 14, 15), and at least two switchable clutch devices (24, 25) for connecting the drive input shaft (5) to one of the elements of the planet gear stages (7, 8, 9) are provided, while the ring gears (17, 18, 19) can be connected to the housing (2) by means of further switchable clutch devices (20). The bearings (34, 35, 37, 38, 39, 41, 42, 43) of the transmission (1) which are arranged in the axial direction are arranged in series in such a way that the axial forces acting on the elements of the planet gear stages (7, 8, 9) can be transmitted by means of the bearings (34, 35, 37, 38, 39, 41, 42, 43) to the housing (2).

Description

technical field [0001] The invention relates to a gearbox provided with: a housing; a driving shaft; a driven shaft; and at least two planetary gear stages for transmitting rotational motion from the driving shaft to the driven shaft, wherein the planetary gear stages each comprise the following components: The sun gear, the internal gear and the planetary gear carrier are equipped with at least two switchable clutch devices for connecting the driving shaft with one of the components of the planetary gear stage; at the same time, the internal gear can utilize other available The switching clutch device is connected with the shell. Background technique [0002] Gearboxes known from the state of the art, in particular automatic gearboxes, are equipped with: a driving shaft; a driven shaft; and planetary gear stages for transmitting the rotational movement from the driving shaft to the driven shaft. For example, DE 2721719 A1 describes a three-stage or multi-stage gearbox. In...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H3/66
CPCF16H3/66F16H2200/2043F16H2200/2007F16H57/021F16H2200/2012F16H2200/201F16H57/08F16H3/44F16H3/62
Inventor D·伊勒豪斯K·米勒G·汉克M·奥贝加塞尔
Owner ZF FRIEDRICHSHAFEN AG
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