Bearing device and turbomachine having a bearing device

Patent metadata

Field	Value
Publication number	US-9512874-B2
Application number	US-201213680788-A
Country	US
Kind code	B2
Filing date	Nov 19, 2012
Priority date	Nov 18, 2011
Publication date	Dec 6, 2016
Grant date	Dec 6, 2016

Abstract

A bearing device with an arrangement of at least two bearings is provided. A filling made of an amorphous/solid active medium as a mechanism of compensating for axial loads is arranged between a bearing race of at least one of the bearings and a surrounding component of the bearing arrangement.

First claim

The invention claimed is:

1. A bearing device comprising:
an arrangement of at least two bearings, each having a bearing race;
a filling comprising an active medium of an amorphous-solid substantially made up of a plurality of solid particles, the filling operatively arranged to transfer force between the bearing race of one of the bearings and the bearing race of another of the bearings to compensate for axial loads between the at least two bearings.

2. The bearing device in accordance with claim 1 , wherein the plurality of solid particles includes a plurality of balls.

3. The bearing device in accordance with claim 2 , wherein the plurality of balls are a same size.

4. The bearing device in accordance with claim 1 , wherein the bearing races, each have a defined pressure surface in operative connection with the filling for exerting an axial pressure force on the filling.

5. The bearing device in accordance with claim 4 , wherein the bearing races are outer races.

6. The bearing device in accordance with claim 4 , wherein the defined pressure surface of a first of the bearing races, and the defined pressure surface of a second of the bearing races, have different sizes.

7. The bearing device in accordance with claim 6 , wherein the first and second of the bearing races are outer races.

8. The bearing device in accordance with claim 1 , wherein at least a part of the plurality of solid particles is at least one chosen from contained within a flexible film and combined with a flexible plastic compound.

9. The bearing device in accordance with claim 1 , and further comprising at least one pressure-transmitting element, arranged between at least one of the bearing races and the filling.

10. The bearing device in accordance with claim 9 , wherein the at least one pressure-transmitting element is at least one chosen from a spacer sleeve, a ring and a compression member.

11. The bearing device in accordance with claim 9 , wherein the pressure-transmitting element includes two sleeves concentric to one another, with one of the sleeves being arranged between one of the bearing races and the filling, and another of the sleeves being arranged between another of the bearing races and the filling.

12. The bearing device in accordance with claim 1 , wherein at least one of the bearings is at least one chosen from an anti-friction bearing, an axial bearing and a plain bearing.

13. The bearing device in accordance with claim 1 , wherein at least one of the bearings comprises rolling elements shaped as at least one chosen from spherical, barrelled, tapered and cylindrical.

14. The bearing device in accordance with claim 1 , wherein at least one of the at least two bearings is a radial bearing and at least one of the at least two bearings is an axial bearing.

15. The bearing device in accordance with claim 1 , wherein at least one of the bearing races is a split inner race.

16. The bearing device in accordance with claim 1 , wherein the bearing race of the one of the bearings and the bearing race of the other of the bearings are positioned adjacent one another, with the bearing race of the one of the bearings including a plurality of first projecting piston portions spaced apart from one another around a first circumference of the bearing race of the one of the bearings; the bearing race of the other of the bearings including a plurality of second projecting piston portions spaced apart from one another around a second circumference of the bearing race of the other of the bearings; the first projecting piston portions interleaved with the second projecting piston portions around the first and second circumferences; the filling being operatively arranged to transfer force between the first projecting piston portions and the second projecting piston portions.

17. The bearing device in accordance with claim 1 , wherein the bearing race of the one of the bearings and the bearing race of the other of the bearings are positioned adjacent one another, with the bearing race of the one of the bearings including a first projecting piston portion positioned around a first circumference of the bearing race of the one of the bearings; the bearing race of the other of the bearings including a second projecting piston portion positioned around a second circumference of the bearing race of the other of the bearings; the first projecting piston portion and the second projecting piston portion being concentric with one another and overlapping one another in a radial direction of the bearing device; the filling being operatively arranged to transfer force between the first projecting piston portion and the second projecting piston portion.

18. A turbomachine, comprising at least one bearing device in accordance with claim 1 .

19. The turbomachine in accordance with claim 18 , wherein the turbomachine is an aircraft engine having a two shaft configuration; wherein the at least one bearing device is arranged between a low-pressure shaft and a high-pressure shaft.

20. A bearing device comprising:
an arrangement of at least two bearings, each having an inner race and an outer race;
a filling comprising an active medium of an amorphous-solid substantially made up of a plurality of solid particles, the filling operatively arranged to transfer force between an outer race of one of the at least two bearings, an outer race of another of the at least two bearings and a casing connected to at least one of the outer races to compensate for axial loads between the at least two bearings.

21. A bearing device comprising:
an arrangement of at least two bearings, each having an inner race and an outer race;
a filling comprising an active medium of an amorphous-solid substantially made up of a plurality of solid particles, the filling operatively arranged to transfer force between an inner race of at least one of the at least two bearings and a shaft connected to the inner race to compensate for axial loads between the at least two bearings.

Assignees

• Rolls Royce Deutschland Ltd & Co Kg

Inventors

• Hennig Sebastian

Classifications

• F01D25/164

  Flexible supports; Vibration damping means associated with the bearing · CPC title

• F01D25/16

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

• F16C19/54 Primary

  Systems consisting of a plurality of bearings with rolling friction (spindle bearings F16C35/08) · CPC title

• F05D2230/64

  using positioning or alignment devices for aligning or centring, e.g. pins · CPC title

• F16C33/60

  divided {or split, e.g. comprising two juxtaposed rings} · CPC title