Planetary gear arrangement
AssigneePratt & Whitney Canada Corp.
InventorsTomasz Rozputyński, Mateusz Kęsek, Sławomir Karbowiak
Life of this patent
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Abstract
A planetary gear arrangement includes a sun gear rotatable about a planetary gear central axis, a ring gear arranged around the sun gear, and a plurality of planet gears positioned between the sun gear and the ring gear and engaged with the sun gear and the ring gear. The plurality of planet gears are supported by a planet carrier. An input shaft is operably connected to the sun gear via a sun gear spline, and a sun gear body positioned radially between the sun gear spline and the plurality of planet gears includes one or more axially-extending sun gear slots from a first axial end of the sun gear body toward a second axial end of the sun gear body.
Claims20
A planetary gear arrangement, comprising:
- a sun gear rotatable about a planetary gear central axis;
- a ring gear arranged around the sun gear;
- and
- a plurality of planet gears disposed between the sun gear and the ring gear and engaged with the sun gear and the ring gear, the plurality of planet gears supported by a planet carrier;
- and
- an input shaft operably connected to the sun gear via a sun gear spline;
- wherein a sun gear body disposed radially between the sun gear spline and the plurality of planet gears includes one or more axially-extending sun gear slots from a first axial end of the sun gear body toward a second axial end of the sun gear body;
- wherein each axially-extending sun gear slot of the one or more axially-extending sun gear slots defines a locally reduced axial material thickness of the sun gear body.
A gas turbine engine system, comprising:
- a gas turbine engine;
- and
- a gearbox operably connected to the gas turbine engine, the gearbox configured to extract energy from the gas turbine engine, the gearbox including:
- an output shaft rotatable about a shaft axis, the output shaft configured to connect to one or more auxiliary components;
- and
- a planetary gear arrangement operably connected to the output shaft, the planetary gear arrangement including:
- a sun gear rotatable about a planetary gear central axis;
- a ring gear arranged around the sun gear;
- and
- a plurality of planet gears disposed between the sun gear and the ring gear and engaged with the sun gear and the ring gear, the plurality of planet gears supported by a planet carrier;
- an input shaft operably connected to the sun gear via a sun gear spline;
- and
- wherein a sun gear body disposed radially between the sun gear spline and the plurality of planet gears includes one or more axially-extending sun gear slots from a first axial end of the sun gear body toward a second axial end of the sun gear body;
- wherein each axially-extending sun gear slot of the one or more axially-extending sun gear slots defines a locally reduced axial material thickness of the sun gear body.
Dependencies are inferred from the claim text.