Cage for a turbomachine speed reducer with planetary gear set
AssigneeSafran Transmission Systems
InventorAlexis Claude Michel Dombek
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Abstract
The invention relates to a planet-carrier (230) cage (234) for a turbomachine speed reducer (110) with a planetary gear set, said cage being designed such that it can contain a central sun wheel (151) with an axis of rotation X and an annular row of planets (150) arranged around the axis X and engaged with said sun wheel, the cage comprising axial receiving elements (280) on the periphery thereof, for receiving axial arms (282) secured to a barrel (242) of said reducer, a substantially radial finger (288) passing through each receiving element and being used to guide the rotation of a ball joint (286) carried by one of said arms, characterised in that each finger comprises means (294, 295) for lubricating said ball joint.
Claims9
A planet-carrier cage for a turbine engine speed reducer with a planetary or epicyclic gear train, this cage being 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 engaged with said sun gear, the cage comprising, at the periphery thereof, axial housings intended to receive axial arms integral with a barrel of said reducer, each housing being passed through by a substantially radial finger which is intended to guide in rotation a ball joint carried by one of said arms, wherein each finger comprises means for lubricating said ball joint, wherein the means for lubricating said ball joint of each finger comprises a central bore for circulating, oil connected to at least one channel extending between said central bore and an outer cylindrical surface of the finger intended to be surrounded by said ball joint.
A turbine engine speed reducer with a planetary or epicyclic gear train, comprising a planet-carrier cage and a barrel, said cage being 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 engaged with said sun gear, said barrel comprising an annular row of axial arms, said cage comprising, at the periphery thereof, axial housings to receive said axial arms of said barrel, each said housing being passed through by a substantially radial finger to guide in rotation a ball joint carried by one of said arms, wherein each finger comprises means for lubricating said ball joint, each arm comprising a hole for mounting said ball joint passed through by the finger of each said housing, wherein the means for lubricating said ball joint of each finger comprises a central bore for circulating oil connected to at least one channel extending between said central bore and an outer cylindrical surface of the linger intended to be surrounded by said ball joint.
Dependencies are inferred from the claim text.