公开(公告)号：US20190376596A1

公开(公告)日：2019-12-12

申请号：US16433068

申请日：2019-06-06

Applicant: ROLLS-ROYCE plc

Inventor： Daniel CLARK ,  Andrew R. RAMSHAW ,  Peter J. DIXON

IPC: F16H57/08 ,  F16H1/28 ,  F16H57/04 ,  F02C7/36 ,  F01D25/18 ,  F02K3/06

Abstract: A gearbox includes a sun gear, a plurality of planet gears, an annulus gear and a planet carrier. The planet carrier includes a first ring, second ring spaced axially from the first ring, a plurality of circumferentially spaced axles and a plurality of circumferentially spaced support structures extending axially between and secured to the first ring and second ring. Each planet gear is rotatably mounted on a respective one of the axles. The first ring has a plurality of circumferentially spaced recesses and the second ring has a plurality of circumferentially spaced recesses. Each recess in the second ring is aligned with a corresponding one of the recesses in the first ring. A first end of each support structure locates in a recess in the first ring. A second end of each support structure locates in a recess in the second ring. Each support structure comprises a fused powdered material.