Compact gear train for turbomachine reducer
AssigneeSafran Transmission Systems
InventorGuillaume Pierre MOULY
Life of this patent
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Abstract
A gear train including a sun gear having a central axis, a ring gear disposed coaxially around the sun gear, a planet carrier, and a first and a second plurality of planet gears. Each planet gear is supported by the planet carrier and includes two first gearings meshed with the ring gear, offset with respect to each other in an axial direction parallel to the central axis. Each planet gear of the first plurality of planet gears includes two second gearings meshed with the sun gear, offset with respect to each other in the axial direction.
Claims12
A gear train for a mechanical reducer for a turbomachine, said gear train comprising:
- a sun having a central axis,
- a ring gear disposed coaxially around the sun gear,
- a planet carrier, and
- a first and a second plurality of planet gears, wherein each planet gear is supported by the planet carrier and comprises two first gearings meshed with the ring gear, offset with respect to each other in an axial direction parallel to the central axis,
- each planet gear of the first plurality of planet gears comprising two second gearings meshed with the sun gear, offset with respect to each other in said axial direction,
- each planet gear of the second plurality of planet gears comprising one or two second gearings meshed with the sun gear, each of the first gearings of the first and second pluralities of planet gears having a first median diameter, and each of the second gearings of the first and second pluralities of planet gears having a second median diameter greater than the first median diameter, and
- wherein each second gearing of the second plurality of planet gears being disposed, in said axial direction, between the second gearings of the first plurality of planet gears.
Dependencies are inferred from the claim text.