Transmission unit, transmission arrangement, and agricultural towing vehicle

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;
• and
• a plurality of gear sets for establishing a plurality of gear ratio stages, each of the plurality of gear sets including a shift wheel rotatably mounted on the output shaft and a fixed wheel arranged on one of the first and second input shafts, wherein a first gear set and a second gear set of the plurality of gear sets each have the fixed wheel on the first input shaft and the shift wheel on the output shaft, wherein a third gear set and a fourth gear set of the plurality of gear sets each have the fixed wheel on the second input shaft and the shift wheel on the output shaft, wherein the shift wheel of the second gear set and the shift wheel of the third 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 second and the third 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.