Assembly for a turbine engine

Patent metadata

Field	Value
Publication number	US-9574600-B2
Application number	US-201414301472-A
Country	US
Kind code	B2
Filing date	Jun 11, 2014
Priority date	Jun 12, 2013
Publication date	Feb 21, 2017
Grant date	Feb 21, 2017

Abstract

The invention relates to an assembly for a turbine engine, the assembly comprising a tubular shaft ( 60 ), a nut ( 64 ) screwed onto an end portion of said tubular shaft ( 60 ), and a locking member ( 86 ) for locking the nut ( 64 ) on the shaft ( 60 ), said member ( 86 ) including means ( 90, 78 ) for coupling in rotation with the nut ( 64 ) and means ( 92, 68 ) for coupling in rotation with the shaft ( 60 ), said member ( 86 ) being movable between a position for coupling the nut ( 64 ) in rotation relative to the shaft ( 60 ), and a position for releasing the nut ( 64 ) relative to the shaft ( 60 ). The nut ( 64 ) includes a housing ( 72 ) in which said member ( 86 ) is suitable for being held when in its release position.

First claim

The invention claimed is:

1. An assembly for a turbine engine, the assembly comprising:
a tubular shaft;
a nut screwed onto an end portion of said tubular shaft; and
a locking member for locking the nut on the shaft, said locking member including means for coupling in rotation with the nut and means for coupling in rotation with the shaft, said locking member being movable between a rotary coupling position for coupling the nut in rotation relative to the shaft, and a release position for releasing the nut relative to the shaft,
wherein the nut includes a housing in which said locking member is held when said locking member is in the release position, the housing being formed by a first groove provided in an inner radial surface of the nut, and
wherein the locking member engages a free end of the shaft in the rotary coupling position.

2. An assembly according to claim 1 , wherein the locking member includes an elastically deformable portion extending circumferentially, and said first groove receives the elastically deformable circumferential portion of the locking member in the release position.

3. An assembly according to claim 2 , wherein the nut includes a second groove that is axially offset from the first groove and that receives the elastically deformable circumferential portion of the locking member in the rotary coupling position.

4. An assembly according to claim 3 , wherein at least one of the means for coupling said member in rotation with the shaft and the means for coupling said member in rotation with the nut comprise fingers which cooperate with recessed zones of at least one of the shaft and the nut.

5. An assembly according to claim 4 , wherein the free end of the shaft includes teeth arranged over an entire periphery of the shaft, a finger of the locking member engaging in the recessed zones defined between said teeth of the shaft in the rotary coupling position of the locking member.

6. An assembly according to claim 4 , wherein the nut includes an annular zone having teeth arranged over an entire periphery of said annular zone, a finger of the locking member engaging in the recessed zones defined between said teeth of the nut in the rotary coupling position of the locking member.

7. An assembly according to claim 6 , wherein the annular zone of the nut having the teeth is situated axially between the first and second grooves of the nut.

8. An assembly according to claim 2 , wherein the elastically deformable circumferential portion of the locking member is formed by an elastically deformable ring portion with free ends including balancing weights of the locking member.

9. A turbine engine comprising an assembly according to claim 1 .

Assignees

• Snecma

Inventors

• Lagarde Romain
• Comin Francois Jean
• Meyer Julien

Classifications

• F01D25/16 Primary

  Arrangement of bearings; Supporting or mounting bearings in casings (bearings per se F16C) · CPC title

• F16D2001/103

  the torque is transmitted via splined connections · CPC title

• F16D1/06 Primary

  for attachment of a member on a shaft or on a shaft-end (attachment of marine propellers on shafts B63H23/34) · CPC title

• F05D2260/30

  Retaining components in desired mutual position · CPC title

• F16B39/22 Primary

  in which the locking takes place during screwing down or tightening (F16B39/01 takes precedence) · CPC title