Planetary gear
AssigneeMTU Aero Engines AG
InventorHermann Klingels
Life of this patent
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Abstract
A planetary gear train is described which includes a sun gear, three or more planet gears, an annulus as well as a planet gear carrier, whereby the input is provided via the sun gear and the output is provided via the annulus or via the planet gear carrier, whereby each planet gear is mounted on both sides in a roller bearing, and whereby the planet gear carrier includes two axially spaced bearing washers as well as at least three webs that connect the bearing washers. Each roller bearing is configured as a single-row or multi-row cylindrical roller bearing, each planet gear has a flexurally elastic axis projecting axially on both sides beyond the gear body of the planet gear, and the connection between each roller bearing and the appertaining axis is configured to be spherically moveable.
Claims12
A planetary gear train comprising:
- a central sun gear;
- three or more planet gears arranged around the central sun gear in a radial plane wherein the planet gears mesh with the central sun gear;
- each planet gear being mounted on both sides axially at the front and back of a gear body in a roller bearing, each planet gear having a flexurally elastic axis projecting axially on both sides beyond the gear body, the connection between an inner ring of each roller bearing and an appertaining axis being configured to be spherically moveable;
- an annulus surrounding and meshing with the planet gears;
- a planet gear carrier on which the planet gears are mounted, the planet gear carrier having two axially spaced bearing washers that support the roller bearing and three or more webs that connect the bearing washers, each roller bearing being configured as a single-row or multi-row cylindrical roller bearing;
- the sun gear providing input and the annulus providing output when the planet gear carrier is held stationary, or the sun gear providing input and the planet gear carrier providing output when the annulus is held stationary.
Dependencies are inferred from the claim text.