Motor vehicle gear wheel change transmission with a retarder brake

Claim 1

A motor vehicle gear wheel change transmission of the countershaft construction, comprising an input shaft, a main shaft coaxial to the input shaft and a retarder brake with a drive shaft situated centrically to a braking rotation axis in a driving connection with the main shaft via a power take-off with a planetary gearset, and with one central wheel of the planetary gearset of the power take-off connected with a non-rotating housing and another central wheel connected with the drive shaft of the retarder brake, and the planet carrier in a driving connection with the main shaft, wherein the braking rotation axis is coaxial with respect to a rotation axis of the main shaft, and the retarder brake and the planetary gearset of the power take-off are operatively arranged between a basic transmission comprising the input shaft as a transmission input, at least one countershaft and the main shaft as a transmission output on one side and an auxiliary transmission of planet wheel construction situated on the other side, said auxiliary transmission being in a transmission power flux in series between a main shaft and a coaxially arranged output shaft, and a non-rotatable driving connection is provided between the planet carrier of the planetary gearset of the power take-off and the planet carrier of the auxiliary transmission, and a hollow shaft through which the main shaft passes constitutes a connection between a central wheel of the planetary gearset of the power take-off and the retarder brake and further wherein the hollow shaft is fixedly connected with a stator of the retarder brake and with a central wheel of the planetary gearset of the power take-off, the other central wheel of the planetary gearset of the power take-off being non-rotatably connected with a rotor of the retarder brake, and planet wheels of the planetary gearset being rotatably arranged relative to planet wheels of the auxiliary transmission.