Multi-stage gearbox
First Claim
1. Multi-stage gearbox, with a drive input shaft (1) connected to a reduction planetary gear set (VS), with a drive output shaft (3) arranged non-coaxially to the drive input shaft (1) and connected to a main planetary gear set (NS), with shift elements (A, B, D) that act on the reduction planetary gear set (VS) and shift elements (M, H, L) that act on the main planetary gear set (NS), such that by selective actuation of the shift elements (A, B, D, M, H, L) an input speed (n) of the drive input shaft (1) can be transferred for the engagement of at least seven forward gears at the drive output shaft (3) in such manner that to shift from one gear to the next-higher or next-lower gear, of the shift elements actuated at the time in each case only one shift element is disengaged and one other shift element is engaged characterized in that the reduction planetary gear set (VS) comprises just one output shaft (2) rotating at the output speed (nvs) of the reduction planetary gear set (VS), the main planetary gear set (NS) can be connected to the drive input shaft (1) by means of at least one second shift element (M, H) acting on the main planetary gear set (NS) via a first spur gearwheel stage (ST11/ST12) of a spur gear arrangement ST, and the main planetary gear set (NS) is connected to the output shaft (2) of the reduction planetary gear set (VS) via a second spur gearwheel stage (ST21/ST22) of the spur gear arrangement ST.
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Accused Products
Abstract
The invention relates to a multi-stage gearbox comprising a drive shaft (1) which is connected to a front-mounted unit (VS) and a driven shaft (3) which is connected to a rear-mounted unit (NS), and shift elements (A, B, D, M, H, L) which are selectively shifted in order to transfer the input speed (n) of the drive shaft to the driven shaft (3) for the shifting of at least seven forward gears such that only one shift element of the actuated shift elements is disengaged or another shift element engaged in order to shift up to the next higher gear or down to the next lower gear. According to the invention, the front-mounted unit (VS) is provided with an output shaft (2) which rotates at an output speed (nvs) of the front-mounted unit; the rear-mounted unit (NS) (NS) can be connected to the drive shaft (1) by at least one second shift element (M,H) which acts upon the rear-mounted unit (NS) via at least one first spur gear stage of a spur pinion (ST); and the rcar-mounted unit (NS) is connected to the output shaft (2) of the front-mounted unit (VS) by means of a second spur gear stage of the spur pinion. A bevel wheel gear (ST) or a hypoid bevel gear can be provided instead of a spur pinion (ST).
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Citations
22 Claims
- 1. Multi-stage gearbox, with a drive input shaft (1) connected to a reduction planetary gear set (VS), with a drive output shaft (3) arranged non-coaxially to the drive input shaft (1) and connected to a main planetary gear set (NS), with shift elements (A, B, D) that act on the reduction planetary gear set (VS) and shift elements (M, H, L) that act on the main planetary gear set (NS), such that by selective actuation of the shift elements (A, B, D, M, H, L) an input speed (n) of the drive input shaft (1) can be transferred for the engagement of at least seven forward gears at the drive output shaft (3) in such manner that to shift from one gear to the next-higher or next-lower gear, of the shift elements actuated at the time in each case only one shift element is disengaged and one other shift element is engaged characterized in that the reduction planetary gear set (VS) comprises just one output shaft (2) rotating at the output speed (nvs) of the reduction planetary gear set (VS), the main planetary gear set (NS) can be connected to the drive input shaft (1) by means of at least one second shift element (M, H) acting on the main planetary gear set (NS) via a first spur gearwheel stage (ST11/ST12) of a spur gear arrangement ST, and the main planetary gear set (NS) is connected to the output shaft (2) of the reduction planetary gear set (VS) via a second spur gearwheel stage (ST21/ST22) of the spur gear arrangement ST.
Specification