Cage for a turbomachine speed reducer with planetary gear set
AssigneeSafran Transmission Systems
InventorJean-Charles Michel Pierre Di Giovanni
Life of this patent
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Abstract
A planet-carrier cage is provided for a turbomachine speed reducer having a planetary gear set. The cage contains a central sun gear and an annular row of planet gears arranged around the sun gear axis and engaging both the sun gear and an internal gear that surrounds the cage. A periphery of the cage has axial receiving elements configured to receive axial fingers secured to a cage carrier of the speed reducer. Each receiving element is penetrated by a radial spindle that guides the rotation of a connection means, such as a swivel joint or a bearing, which is supported by the fingers. The spindles include means for projecting lubricating oil into regions in which the planet gears mesh with the internal gear.
Claims17
A speed reducer with a planetary or epicyclic gear set for a turbomachine, this reducer having an axis X and comprising:
- a cage carrier comprising an annular row of axial fingers, each finger comprising a recess configured to mount a connecting means, and
- a planet carrier cage configured to contain a central sun gear with an axis X of rotation and an annular row of planet gears arranged around the axis X and meshed with said sun gear and with a ring gear that surrounds the cage, the cage comprising at its periphery axial housings in which are engaged the axial fingers integral with the cage carrier, each housing being traversed by a radial pin that guides in rotation said connecting means which is carried by one of said fingers and which is traversed by said pin, wherein the pins comprise means for spraying lubricating oil into areas (Z) in which the planet gears mesh with said ring gear.
Dependencies are inferred from the claim text.