US 12,228,192 B2
Transmission unit, transmission arrangement, and agricultural towing vehicle
Stefan Raisch, Vaihingen/Enz (DE); Rainer Gugel, Plankstadt (DE); Frank Buhrke, Birkenau (DE); and David Mueller, Dettenheim (DE)
Assigned to DEERE & COMPANY, Moline, IL (US)
Appl. No. 18/040,002
Filed by DEERE & COMPANY, Moline, IL (US)
PCT Filed Aug. 24, 2021, PCT No. PCT/EP2021/073352
§ 371(c)(1), (2) Date Jan. 31, 2023,
PCT Pub. No. WO2022/048946, PCT Pub. Date Mar. 10, 2022.
Claims priority of application No. 102020122827.9 (DE), filed on Sep. 1, 2020; and application No. 20193895.8 (EP), filed on Sep. 1, 2020.
Prior Publication US 2023/0272842 A1, Aug. 31, 2023
Int. Cl. F16H 3/00 (2006.01); F16H 3/089 (2006.01); F16H 37/04 (2006.01); F16H 3/08 (2006.01)
CPC F16H 3/006 (2013.01) [F16H 3/089 (2013.01); F16H 37/046 (2013.01); F16H 2003/0826 (2013.01); F16H 2200/0004 (2013.01); F16H 2200/0052 (2013.01); F16H 2200/0078 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A transmission arrangement for a drivetrain of an agricultural towing vehicle, comprising:
a power take-off drive shaft;
a transmission unit, comprising:
a first clutch and a second clutch;
a first input shaft, a second input shaft, and an output shaft, wherein the first clutch is connected to the first input shaft and the second clutch is connected to the second input shaft;
a plurality of gear sets, each with a shift wheel and a fixed wheel for establishing a plurality of gear ratio stages, wherein a first gear set of the plurality of gear sets has the fixed wheel on the first input shaft and the shift wheel on the output shaft, and a second gear set of the plurality of gear sets has the fixed wheel on the second input shaft and the shift wheel on the output shaft, wherein the shift wheel of the first gear set and the shift wheel of the second gear set can be selectively coupled to a shift element such that at least one winding path gear ratio stage can be formed via the first and the second gear set; and
a multi-stage transmission which can be shifted into a plurality of powershift ratio stages, the multi-stage transmission includes a planetary gear set with three integrated planetary stages and a clutch arrangement including three clutch units and a direct clutch coupled directly between two of the three clutch units;
wherein at least one of the first clutch or the second clutch defines a central passage, and wherein the power-take-off drive shaft is disposed in the central passage.