Patent · US Active

Multi-stage gearbox of planetary construction

US9151363B2 · kind B2 · utility

6Cited by

18References

19Claims

0Family size

Assignee

ZF FRIEDRICHSHAFEN AG · DE

Inventors

Martin Fellmann · Passau, DE
Stefan Beck · Eriskirch, DE
Gerhard Gumpoltsberger · Friedrichshafen, DE

Key dates

Filing date	Nov 21, 2011
Grant date	Oct 6, 2015
Priority date	—
Expiry date	Jun 2, 2032

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF16H2200/2097
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.