公开(公告)号：US11629650B2

公开(公告)日：2023-04-18

申请号：US17651918

申请日：2022-02-22

申请人： ROLLS-ROYCE plc

发明人： Martin Berthold ,  Colin Young

IPC分类号： F16H57/04 ,  F02C7/36 ,  F16H57/08

摘要： A planetary gearbox having a sun gear, a plurality of planet gears, a ring gear, and a plurality of journal bearing pins. At its axially forward face side and/or at its axially rearward face side, each planet gear forms a recess that extends inside the planet gear starting from the face side. The planet gear forms a protrusion at its axially forward face side and/or at its axially rearward face side. The protrusion has an axial extent and a radial extent, wherein the radial extent is limited at the respective face side to the area between the planet gear inner bore and the radial inner limit of the respective recess in the planet gear, and wherein the protrusion is configured to provide for a flow path for oil emerging from the journal bearing that guides the oil away from the journal bearing.