Transfer of lubricant into the interior of a hollow shaft
AssigneesZF Friedrichshafen AG, Zf Wind Power Antwerpen N.V.
InventorsWim De Laet, Andy Maes, Stijn Rottiers, Quinten Gaethofs, Koen Krieckemans
Life of this patent
Estimating the term…
Abstract
An arrangement, including a gearbox housing, a hollow shaft rotatably mounted in the gearbox housing, and a lubrication point located at least partially inside the hollow shaft. The gearbox housing has a ring which encloses a hollow space with an outer circumferential surface of the hollow shaft. The ring has one or more drill holes, each of which opens into the hollow space. The hollow shaft has one or more drill holes, each of which opens into an interior of the hollow shaft and into the hollow space.
Claims8
An arrangement, comprising:
- a gearbox housing;
- a hollow shaft rotatably mounted in the gearbox housing;
- and
- a lubrication point located at least partially inside the hollow shaft,
- wherein:
- the gearbox housing has a ring which encloses a hollow space with an outer circumferential surface of the hollow shaft,
- the ring has one or more drill holes, each of which opens into the hollow space, and
- the hollow shaft has one or more drill holes, each of which opens into an interior of the hollow shaft and into the hollow space.
An arrangement, comprising:
- a gearbox housing;
- a hollow shaft rotatably mounted in the gearbox housing;
- and
- a lubrication point located at least partially inside the hollow shaft,
- wherein:
- the gearbox housing has a ring which encloses a hollow space with an outer circumferential surface of the hollow shaft,
- one or more labyrinth seals seal the ring relative to the outer circumferential surface,
- the ring has one or more drill holes, each of which opens into the hollow space, and
- the hollow shaft has one or more drill holes, each of which opens into an interior of the hollow shaft and into the hollow space.
Dependencies are inferred from the claim text.