公开(公告)号：US20190211914A1

公开(公告)日：2019-07-11

申请号：US16217216

申请日：2018-12-12

Applicant: ROLLS-ROYCE PLC

Inventor： Chloe J. PALMER

IPC: F16H57/04 ,  F02K3/06 ,  F02C7/36 ,  F16H1/28 ,  B03C1/28

Abstract: An epicyclic geartrain includes a debris collection arrangement. The epicyclic geartrain comprises a sun gear, a plurality of planet gears, with the plurality of planet gears being supported by a planet torque ring, and a ring gear. The planet gears meshingly surround the sun gear, and the ring gear meshingly surrounds the planet gears.At least one of the sun gear, the plurality of planet gears, and the ring gear, is provided with a plurality of permanent magnet portions, and a debris collection element. The plurality of magnet portions is arranged as a circumferential array across a side of the corresponding gear. The debris collection element extends along the side face of the gear. The debris collection element is slidably positioned against the side face, such that rotation of the gear causes the debris collection element to remove any ferromagnetic debris particles that are magnetically attached to the side face.