公开(公告)号：US20240026955A1

公开(公告)日：2024-01-25

申请号：US18156526

申请日：2023-01-19

Applicant: GE Avio S.r.l. ,  GE Aviation Czech s.r.o.

Inventor： Paolo Mastellone ,  Leonardo Coviello ,  Juraj Hrubec

IPC: F16H1/28 ,  F16H57/08 ,  F02C7/36

CPC classification number: F16H1/28 ,  F16H57/08 ,  F02C7/36 ,  F16H2057/02039

Abstract: A gearbox assembly includes a plurality of planet gears. At least one planet gear of the plurality of planet gears includes a layshaft that supports a first stage planet gear and a second stage planet gear. The at least one planet gear is characterized by a Radial Stage Distance greater than or equal to 30 millimeters and less than or equal to 100 millimeters. The Radial Stage Distance is Rrm1−Rrt2. Rrm1 is a first stage rim inner radius of the first stage planet gear and Rrt2 is a second stage root radius of the second stage planet gear.

公开(公告)号：US11668372B2

公开(公告)日：2023-06-06

申请号：US17020262

申请日：2020-09-14

Applicant: GE Avio S.r.l.

Inventor： Juraj Hrubec ,  Michele Gravina ,  Leonardo Coviello

IPC: F16H1/48 ,  F16H57/08 ,  F02C7/36

CPC classification number: F16H1/48 ,  F02C7/36 ,  F16H57/082

Abstract: An apparatus and method for reducing planet gear misalignment of planet gears mounted on a planet-carrier in an epicyclic gearing. The apparatus and method of the present disclosure specifically provide for a stiffness-reducing feature, a pillar, and a side-plate, each with a respective stiffness. In several embodiments, the feature stiffness is less than the pillar stiffness which is at least 10% less than the side-plate stiffness. The stiffness-reducing feature and the pillar may make up a pylon which has an axis. The pylon axis may form an angle with the side plate which is less than 90° and greater than 20°.

公开(公告)号：US11655767B2

公开(公告)日：2023-05-23

申请号：US17168368

申请日：2021-02-05

Applicant: GE Avio S.r.l.

Inventor： Juraj Hrubec ,  Ivan Golovin ,  Davide Lauria

IPC: F02C7/36 ,  F16H1/46 ,  F16H57/08

CPC classification number: F02C7/36 ,  F16H1/46 ,  F16H57/082 ,  F05D2220/323 ,  F05D2240/60 ,  F05D2260/4031 ,  F05D2260/70 ,  F16H2057/085

Abstract: A gearbox for an engine includes a rotating element and a turbomachine, the turbomachine includes a shaft, and the rotating element is driven by the shaft across the gearbox. The gearbox includes a ring gear, a first sun gear and a second sun gear each configured to be driven by the shaft of the turbomachine, a first planet gear comprising a first gear portion and a second gear portion, and a second planet gear comprising a first gear portion and a second gear portion.

公开(公告)号：US11643972B2

公开(公告)日：2023-05-09

申请号：US17347347

申请日：2021-06-14

Applicant: GE Avio S.r.l.

Inventor： Juraj Hrubec ,  Michele Gravina ,  Andrea Piazza

IPC: F02C7/36 ,  F02C7/06

CPC classification number: F02C7/36 ,  F02C7/06 ,  F05D2240/54 ,  F05D2260/40311 ,  F05D2260/98

Abstract: A gear assembly for use with a turbomachine comprises a sun gear, a plurality of planet gear layshafts that each support a first stage planet gear and a second stage planet gear, and a ring gear. The sun gear is configured to rotate about a longitudinal centerline of the gear assembly, and the plurality of planet gear layshafts have a tubular shape.

公开(公告)号：US11578610B2

公开(公告)日：2023-02-14

申请号：US17352107

申请日：2021-06-18

Applicant: GE Avio S.r.l.

Inventor： Juraj Hrubec ,  Leonardo Coviello

IPC: F16H1/28 ,  F01D15/12 ,  F16H57/023 ,  F16H57/08 ,  F16H1/32

Abstract: An apparatus and method for reducing edge contact stress concentrations in a press-fit. The apparatus and method of the present disclosure specifically provide for a press-fit collar having a channel circumscribing a collar axis. The channel having an asymmetrical cross-sectional profile in a radial face. The asymmetrical cross-sectional profile being configured to reduce an edge contact pressure.