Mount with an axial upstream linkage for connecting a gearbox to a turbine engine case

Patent metadata

Field	Value
Publication number	US-9500133-B2
Application number	US-201213726131-A
Country	US
Kind code	B2
Filing date	Dec 23, 2012
Priority date	Dec 23, 2012
Publication date	Nov 22, 2016
Grant date	Nov 22, 2016

Abstract

A turbine engine assembly includes a turbine engine case, a gearbox and a plurality of gearbox mounts that connect the gearbox to the case. The case extends along an axis between an upstream end and a downstream end. The gearbox mounts include an axial mount that extends axially in an upstream direction from the gearbox to the case.

First claim

What is claimed is:

1. A turbine engine assembly, comprising:
a turbine engine case extending along an axis between an upstream end and a downstream end, the turbine engine case including a plurality of discrete axial segments including a first segment and a second segment that is downstream of the first segment;
a gearbox; and
a plurality of gearbox mounts connecting the gearbox to the turbine engine case, and comprising an axial mount that extends axially, relative to the axis, in an upstream direction from the gearbox to the first segment of the turbine engine case;
wherein the plurality of gearbox mounts further include a radial mount that extends radially towards the axis, in a direction substantially perpendicular to the axis from the gearbox to the second segment of the turbine engine case.

2. The engine assembly of claim 1 , wherein the axial mount has a radial height and an axial length that is greater than the radial height.

3. The engine assembly of claim 1 , further comprising:
a pair of flanges connected to the turbine engine case;
wherein the axial mount includes a linkage extending axially between a downstream end portion and an upstream end portion that is arranged between and connected to the pair of flanges.

4. The engine assembly of claim 3 , wherein the upstream end portion includes a bearing that is connected to the pair of flanges.

5. The engine assembly of claim 1 , wherein the axial segments further include a third segment arranged axially between the first segment and the second segment.

6. The engine assembly of claim 5 , wherein a third of the plurality of gearbox mounts connects the gearbox to the third segment.

7. The engine assembly of claim 1 , wherein the plurality of gearbox mounts further include a second axial mount that extends axially in the upstream direction from the gearbox to the turbine engine case.

8. The engine assembly of claim 1 , wherein
the axial mount includes a linkage and a fuse joint that connects the linkage to the turbine engine case; and
the fuse joint is configured to substantially prevent movement between the linkage and the turbine engine case when the fuse joint is subject to loading less than a threshold, and to permit constrained movement between the linkage and the turbine engine case when the loading is greater than the threshold.

9. The engine assembly of claim 8 , wherein
the linkage includes a plurality of apertures; and
the fuse joint includes a plurality of fasteners that connect the linkage to the turbine engine case and that respectively extend into the plurality of apertures.

10. The engine assembly of claim 8 , wherein
the linkage includes an aperture;
the fuse joint includes a sleeve that extend into the aperture, and a fastener that extends into the sleeve; and
the sleeve and the fastener connect the linkage to the turbine engine case.

11. The engine assembly of claim 1 , further comprising:
a bracket connected to the turbine engine case, and including a first aperture and a second aperture;
wherein the axial mount includes
a linkage including a third aperture and a fourth aperture;
a first fastener extending into the first aperture and the third aperture, and having a diameter that is substantially equal to respective diameters of the first aperture and the third aperture; and
a second fastener extending into the second aperture and the fourth aperture, and having a diameter that is less than at least one of a diameter of the second aperture and a diameter of the fourth aperture.

12. The engine assembly of claim 1 , wherein the axial mount includes:
a linkage including an aperture;
a sleeve extending into the aperture; and
a fastener extending into the sleeve, and separated from the sleeve by a gap.

13. The engine assembly of claim 1 , wherein the axial mount includes:
a base connected to the turbine engine case; and
a plurality of arms connected to the gearbox, wherein the arms converge to the base.

14. A turbine engine assembly, comprising:
a turbine engine case extending along an axis between an upstream end and a downstream end;
a gearbox; and
a plurality of gearbox mounts connecting the gearbox to the turbine engine case, and including a strut that extends axially between an upstream portion connected to the turbine engine case and a downstream portion connected to the gearbox;
wherein the plurality of gearbox mounts further include a second mount and a third mount;
wherein the second mount extends radially towards the axis of the turbine engine case, from the gearbox to the turbine engine case and mounts the gearbox to the turbine engine case independent of the third mount; and
wherein the third mount extends radially, relative to the axis of the turbine engine case, from the gearbox to the turbine engine case and mounts the gearbox to the turbine engine case independent of the second mount.

15. The engine assembly of claim 14 , wherein the plurality of gearbox mounts further include a fuse joint that connects the upstream portion to the turbine engine case.

16. The engine assembly of claim 14 , wherein the strut is included in an axial mount having a radial height and an axial length that is greater than the radial height.

17. A turbine engine assembly, comprising:
a turbine engine case extending along an engine axis;
a gearbox comprising:
a gearbox case extending between a downstream end and an upstream end; and
a power input extending along power input axis which is generally parallel with the engine axis, and located at the upstream end; and

a plurality of gearbox mounts connected to the gearbox case, and comprising an axial mount that extends axially relative to the engine axis, in an upstream direction from the gearbox case to a first portion of the turbine engine case;
wherein the plurality of gearbox mounts further include a radial mount that extends radially towards the engine axis, from the gearbox to a second portion the turbine engine case that is axially, relative to the engine axis, aft of the first portion of the turbine engine case; and
wherein the gearbox is configured such that a plurality of engine accessories may be mounted to and driven by the gearbox.

18. The engine assembly of claim 17 , wherein the axial mount comprises:
a first linkage;
a second linkage; and
a fuse joint configured to substantially prevent movement between the first linkage and the second linkage when the fuse joint is subject to loading less than a threshold, and to permit a constrained movement between the first linkage and the second linkage when the loading is greater than the threshold.

Assignees

• United Technologies Corp

Inventors

• Davis Todd A
• Webb Timothy
• Ronski Mark
• Stachowiak David A

Classifications

• F05D2240/91

  on a stationary structure · CPC title

• F05D2260/311

  of the frangible or shear type · CPC title

• Y10T74/2186

  Gear casings · CPC title

• F02C7/32 Primary

  Arrangement, mounting, or driving, of auxiliaries · CPC title

• F01D25/28

  Supporting or mounting arrangements, e.g. for turbine casing · CPC title