| US 7,381,144 B2 | ||
| Gearbox assembly with gearbox means for speed overlap | ||
| Andreas Meise, Bochum (Germany); Bernhard Langenbeck, Dortmund (Germany); Steffan Reiblein, Hambrücken (Germany); and Frank Nagel, Ulm (Germany) | ||
| Assigned to Lohmann & Stolterfoht GmbH, (Germany) | ||
| Filed on Oct. 28, 2005, as Appl. No. 11/261,888. | ||
| Claims priority of application No. 10 2004 053 254 (DE), filed on Nov. 04, 2004. | ||
| Prior Publication US 2006/0094553 A1, May 04, 2006 | ||
| Int. Cl. F16H 47/04 (2006.01) | ||
| U.S. Cl. 475—72 [475/78; 475/207; 475/218; 475/219] | 9 Claims |
| 1. A gearbox assembly, in particular for a wheel drive of a vehicle with a hydrostatic gearbox having at least one downstream
planetary stage, wherein coupling the planetary stage to the hydrostatic gearbox is via intermediate gearbox means for speed
overlap within the planetary stage, by having, according to a first driving mode, a sun gear of the planetary stage in effective
interaction with a ring gear of the planetary stage via a first coupling, so that an output speed of the planetary stage is
a linear function of an output speed of the hydrostatic gearbox and that, according to a second driving mode, the ring gear
is in effective interaction with the hydrostatic gearbox,
wherein, at the same time, the sun gear is in effective interaction with a gearbox input shaft via a second coupling so that
as a consequence of power distribution, speeds of the ring gear and the sun gear overlap and in that the first coupling is
in effective interaction with the ring gear of the planetary stage via a first gearbox stage, and in that the ring gear is
in effective interaction with the hydrostatic gearbox via a second gearbox stage,
wherein at least one of the first and second gearbox stages stage has a spur gear fixedly mounted on a shaft and the shaft
is driven by the hydrostatic gearbox to connect the ring gear and the sun gear of the planetary stage with each other in the
first driving mode,
wherein the gearbox assembly outputs power via planetary pinion of the planetary stage, said planetary pinion meshing with
the sun gear and the ring gear of the planetary stage.
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