Sliding bearing device

Patent metadata

Field	Value
Publication number	US-10393177-B2
Application number	US-201815865398-A
Country	US
Kind code	B2
Filing date	Jan 9, 2018
Priority date	Jul 21, 2015
Publication date	Aug 27, 2019
Grant date	Aug 27, 2019

Abstract

A sliding bearing device is proposed which comprises a bearing seating having a first sliding surface and a bearing body having a second sliding surface, wherein the bearing body is accommodated by the bearing seating and the first sliding surface and the second sliding surface face each other, wherein the bearing seating and/or the bearing body is made of an open-pore fiber composite material at least in a sliding region which forms the respective sliding surface.

First claim

What is claimed is:

1. Sliding bearing device comprising:
a bearing seating having a first sliding surface; and
a bearing body having a second sliding surface;
wherein the bearing body is accommodated by the bearing seating and the first sliding surface and the second sliding surface face each other;
wherein at least one of the bearing seating and the bearing body is made of an open-pore fibre composite material at least in a sliding region which forms the respective sliding surface; and
wherein at least one of (i) fibres of the fibre composite material are arranged in the sliding region such that the fibres end at the associated sliding surface at an acute angle to the sliding surface, and (ii) fibres of the fibre composite material run parallel to the respective sliding surface.

2. A sliding bearing device in accordance with claim 1 , wherein fibres of the fibre composite material are carbon fibres.

3. A sliding bearing device in accordance with claim 1 , wherein at least one of the bearing seating and the bearing body is made entirely of the same fibre composite material.

4. A sliding bearing device in accordance with claim 1 , wherein:
at least one of the bearing seating and the bearing body comprises a carrier region on which the sliding region is arranged, and
the material of the sliding region and a material of the carrier region are different.

5. A sliding bearing device in accordance with claim 1 , further comprising a fluid supply device by means of which a fluid is provided to channels of at least one of the bearing seating and the bearing body, wherein the channels are formed through the open-pore structure and lead to the respective sliding surface.

6. A sliding bearing device in accordance with claim 1 , wherein the open-pore structure is formed such that fluid is provided to at least one of the entire first sliding surface which is in sliding contact with the second sliding surface, and the entire second sliding surface which is in sliding contact with the first sliding surface.

7. A sliding bearing device in accordance with claim 1 , wherein the fibres are arranged in the sliding region at an acute angle of at least 45° to the sliding surface.

8. A sliding bearing device in accordance with claim 1 , wherein:
a heat dissipating device is arranged on at least one of the bearing seating and the bearing body, and
fibres lead to the heat dissipating device.

9. A sliding bearing device in accordance with claim 8 , wherein the heat dissipating device is galvanized.

10. A sliding bearing device in accordance with claim 8 , wherein the fibres are pitch fibres.

11. A sliding bearing device in accordance with claim 8 , wherein the heat dissipating device is made of a material having metallic thermal conductivity.

12. A sliding bearing device in accordance with claim 8 , wherein the heat dissipating device is galvanized in a region which is spaced from the corresponding sliding surface.

13. A sliding bearing device in accordance with claim 1 , wherein at least one of the bearing seating and the bearing body comprises a plurality of ring segments or disk segments which are connected to one another.

14. A sliding bearing device in accordance with claim 1 , wherein the fibre composite material is C/C.

15. A sliding bearing device in accordance with claim 1 , wherein the fibre composite material is a ceramic fibre composite material or a metallic material incorporating fibres.

16. A sliding bearing device in accordance with claim 1 , wherein at least one of the bearing seating and the bearing body is formed such that at least one of the open porosity and a thickness of at least one of the bearing seating and the bearing body varies along at least one direction.

17. A sliding bearing device in accordance with claim 1 , wherein at least one of:
the bearing body is a shaft and the bearing seating is a shaft seating, or
the bearing seating is a ring element and the bearing body is a rod, or
the bearing body is a ball bearing and the bearing seating is a bearing shell.

18. Turbopump or turbine or free piston motor, comprising at least one sliding bearing device, said at least one sliding bearing device comprising:
a bearing seating having a first sliding surface; and
a bearing body having a second sliding surface;
wherein the bearing body is accommodated by the bearing seating and the first sliding surface and the second sliding surface face each other;
wherein at least one of the bearing seating and the bearing body is made of an open-pore fibre composite material at least in a sliding region which forms the respective sliding surface; and
wherein at least one of (i) fibres of the fibre composite material are arranged in the sliding region such that the fibres end at the associated sliding surface at an acute angle to the sliding surface, and (ii) fibres of the fibre composite material run parallel to the respective sliding surface.

Assignees

• Deutsch Zentr Luft & Raumfahrt

Inventors

• Haberzettl Andreas
• Hald Hermann
• Kitsche Wolfgang
• Ortelt Markus

Classifications

• F16C33/043

  Sliding surface consisting mainly of ceramics, cermets or hard carbon, e.g. diamond like carbon [DLC] · CPC title

• F16C33/104 Primary

  in a porous body, e.g. oil impregnated sintered sleeve · CPC title

• F16C33/201

  Composition of the plastic · CPC title

• F16C33/24

  with different areas of the sliding surface consisting of different materials · CPC title

• F16C37/002

  of fluid bearings · CPC title