Guide arm for elements having an elongated shape, in particular for a turbomachine

Patent metadata

Field	Value
Publication number	US-10329935-B2
Application number	US-201415105305-A
Country	US
Kind code	B2
Filing date	Dec 18, 2014
Priority date	Dec 20, 2013
Publication date	Jun 25, 2019
Grant date	Jun 25, 2019

Abstract

The invention proposes a guide arm for guiding at least one element having an elongated shape ( 20 ), corresponding to a set of cables and/or pipes. The arm comprises an inner cavity ( 62 ) opening on the outside of the arm at each of the ends thereof, and in which the elements having an elongated shape can extend.
According to the invention, this structure more particularly comprises:
a frame ( 8 ) comprising a beam ( 18 ) linked to means ( 30, 36, 44 ) for holding the elements having an elongated shape on the outside and along the beam, and a cover ( 54 ) of which the walls ( 56, 58 ) cover the holding means of the frame, and are engaged with the beam, in such a way as to form the inner cavity in which the elements having and elongated shape extend,

shock-absorbing means ( 68 ) being arranged between the means ( 30, 36, 44 ) for holding the elements having an elongated shape ( 20 ), and the longitudinal walls ( 56, 58 ), in such a way as to reduce and damp the movements of the means for holding in the cavity ( 62 ).

First claim

The invention claimed is:

1. A guide arm for guiding at least one element having an elongated shape, with said arm extending in a substantially longitudinal direction between two ends, comprising an inner cavity opening on the outside of the arm at each of the ends thereof, and being adapted to accommodate at least one element having an elongated shape extending substantially longitudinally in the cavity, wherein said arm consists of two parts extending substantially longitudinally and opposite each other,
one of the two parts is a frame comprising a substantially longitudinal beam linked to frame holding means for holding the elements having an elongated shape on the outside and along the beam, and
the other one of the two parts is a cover comprising substantially longitudinal walls which cover the frame holding means, and are engaged with the beam, in such a way as to form the inner cavity in which the elements having an elongated shape extend,
with shock-absorbing means being arranged pre-stressed between the frame holding means for holding the elements having an elongated shape, and the longitudinal walls, in such a way as to reduce and damp the movements of the frame holding means for holding in the cavity.

2. A guide arm according to claim 1 , wherein the shock-absorbing means comprise elastomer pads fixed to the longitudinal walls of the cover, and coated with a friction-resistant material in the vicinity of the contact with the frame holding means.

3. A guide arm according to claim 1 , wherein the shock-absorbing means comprise rippled metal plates fixed to the longitudinal walls of the cover, and the ripple peaks of which rest, on one side, against the longitudinal walls of the cover and, on the other side, against the frame holding means.

4. A guide arm according to claim 1 , wherein the shock-absorbing means are fixed to the longitudinal walls of the cover using blind rivets.

5. A guide arm according to claim 1 , wherein the frame holding means comprise at least one member for the passage of elements having an elongated shape comprising holes for the passage of elements having an elongated shape oriented substantially longitudinally, and which is held tight about the elements having an elongated shape by a collar surrounding said member for the passage of elements having each an elongated shape, with said collar being fixed to a lug of a plurality of lugs defining at least some of the frame holding means, said lug extending from the beam.

6. A guide arm according to claim 5 , wherein said plurality of lugs are substantially aligned along the beam and are, each, fixed to a collar tightening a member for the passage of the elements having an elongated shape, in such a way as to guide the elements having an elongated shape along the guide arm.

7. An assembly consisting of a guide arm according to claim 5 , and of at least one element having an elongated shape, wherein the guide arm has an aerodynamic configuration for the flowing of a fluid in the downstream direction of the guide arm, substantially perpendicularly to the longitudinal direction, with upstream the guide arm consisting of the frame, said frame being provided with some of said plurality of lugs which extend longitudinally and in the downstream direction, from downstream of the beam, with the elements having an elongated shape being aligned in the downstream direction in the passage members arranged downstream of the lugs, and downstream the guide arm consisting of the cover, the longitudinal walls of which extend in the downstream direction on either side of the members for the passage of the elements having an elongated shape, and are linked to the beam on either side of the lugs, in such a way that the guide arm has two smooth external surfaces, substantially mutually parallel, and joined in two upstream and downstream edges of the guide arm.

8. A turbomachine, comprising a guide arm according to claim 1 .

9. A turbomachine, according to claim 8 , wherein the guide arm is arranged through a fluid circulation annular stream of the turbomachine, with one of the ends of the guide arm being linked to an inner annular shroud of the stream, and the other end of the guide arm being linked to an outer annular shroud of the stream, in such a way as to guide at least one element having an elongated shape, radially between the inside and the outside of the stream, with the frame being arranged upstream of the cover.

10. The guide arm according to claim 1 , wherein each element having said elongated shape elongated shape is a cable assembly.

11. The guide arm according to claim 1 , wherein each element having said elongated shape elongated shape is a pipe.

Assignees

• Snecma
• Safran Aircraft Engines

Inventors

• Gaudry Florian
• Beljambe Ceddric

Classifications

• F05D2260/36

  by a form fit connection, e.g. by interlocking · CPC title

• F05D2300/501

  Elasticity · CPC title

• F05D2300/611

  Coating · CPC title

• F01D9/065 Primary

  Fluid supply or removal conduits traversing the working fluid flow, e.g. for lubrication-, cooling-, or sealing fluids (see also F01D25/16, F01D25/24 and F01D25/26) · CPC title

• F05D2260/38

  by a spring, i.e. spring loaded or biased towards a certain position · CPC title