Multi-stage gearbox of planetary construction

摘要

A multi-stage planetary gearbox, in particular a torque split gearbox of a work machine, having a housing which accommodates four planetary gearsets, a plurality of shafts, and shift elements including brakes and clutches which implement different gear ratios between the drive and output shafts. The drive shaft couples a carrier of the third gearset which can couple, via a first clutch, a third shaft that is coupled to a ring gear of a second gearset and which can be connected, via a second clutch, to a fourth shaft connected to a sun gear of the third gearset. A fifth shaft couples a sun gear of the second gearset and can be locked, via a first brake, with the housing. A sixth shaft couples a ring gear of the third gearset and a carrier of the second gearset. The output shaft is coupled to a carrier of a fourth gearset.

主权项

1. A multi-stage gearbox of a planetary construction comprising:
a housing accommodating first, second, third and fourth planetary gearsets, a plurality of shafts, and a plurality of shift elements comprising at least one brake and at least four clutches which can establish different gear ratios between a drive shaft and an output shaft, the drive shaft being directly connected with a carrier of the third planetary gearset which is releaseably coupled, via engagement of a first clutch, with a third shaft (14), and the third shaft being coupled with a ring gear of the second planetary gearset, the carrier of the third planetary gearset being releasably connected, via engagement of a second clutch, with a fourth shaft connected with a sun gear of the third planetary gearset, a fifth shaft being coupled with a sun gear of the second planetary gearset and being releasably connected with the housing via engagement of a first brake, a sixth shaft connecting a ring gear of the third planetary gearset with a carrier of the second planetary gearset, and the output shaft being directly coupled with a carrier of the fourth planetary gearset and the output shaft being either directly coupled or coupled by engagement of the clutches with a carrier of the first planetary gearset.