Slide bearing device

Patent metadata

Field	Value
Publication number	US-9470265-B2
Application number	US-201514812600-A
Country	US
Kind code	B2
Filing date	Jul 29, 2015
Priority date	Jul 31, 2014
Publication date	Oct 18, 2016
Grant date	Oct 18, 2016

Abstract

A slide bearing device, includes an inner ring-shaped internal element, an intermediate element that encloses the internal element in the radial direction of the slide bearing device and is at least approximately ring-shaped, and a ring-shaped external element that encloses the intermediate element in the radial direction. The internal element is rotatable relative to the external element, and the intermediate element is rotatable relative to the internal element and relative to the external element. In a default state of the slide bearing device, the internal element is arranged at a distance to the intermediate element in the radial direction of the slide bearing device, and the intermediate element is arranged at a distance to the external element. The internal element and the external element are made of a metallic material and the intermediate element with a non-metallic material.

First claim

The invention claimed is:

1. A slide bearing device comprising an inner ring-shaped internal element, at least one intermediate element that encloses the internal element in a radial direction of the slide bearing device and that is embodied so as to be at least approximately ring-shaped, and a ring-shaped external element that encloses the at least one intermediate element in the radial direction of the slide bearing device, wherein the internal element is rotatable relative to the external element, and the at least one intermediate element is rotatable relative to the internal element and relative to the external element, and wherein in a default state of the slide bearing device the internal element is arranged at a distance to the at least one intermediate element in the radial direction of the slide bearing device, and the at least one intermediate element is arranged at a distance to the external element, wherein the internal element and the external element are made of a metallic material and the at least one intermediate element is made of a non-metallic material.

2. The slide bearing device according to claim 1 , wherein the at least one intermediate element is made of a ceramic material.

3. The slide bearing device according to claim 2 , wherein a distance between the at least one intermediate element and the internal element and a distance between the at least one intermediate element and the external element in the radial direction of the slide bearing device are chosen such that tensile strains lie below a defined threshold value in an area of the at least one intermediate element during operation of the slide bearing device.

4. The slide bearing device according to claim 3 , wherein an internal surface of the at least one intermediate element that is facing the internal element and an external surface of the internal element that is facing the at least one intermediate element are embodied so as to be curved as seen in a direction of a central axis of the slide bearing device.

5. The slide bearing device according to claim 4 , wherein an external surface of the at least one intermediate element that is facing towards the external element and an internal surface of the external element that is facing towards the at least one intermediate element are embodied so as to be curved as seen in a direction of a central axis of the slide bearing device.

6. The slide bearing device according to claim 5 , wherein at least one chosen from the external surface of the internal element, the internal surface of the at least one intermediate element, the external surface of the at least one intermediate element and the internal surface of the external element have a constant radius of curvature.

7. The slide bearing device according to claim 6 , wherein the at least one intermediate element is embodied as a multi-piece part in a circumferential direction of the slide bearing device.

8. The slide bearing device according to claim 7 , wherein respectively one dividing element is provided in the circumferential direction of the slide bearing device between two parts of the at least one intermediate element, respectively.

9. The slide bearing device according to claim 8 , wherein the external element is embodied in at least two parts in an axial direction of the slide bearing device.

10. The slide bearing device according to claim 9 , wherein a hydraulic fluid is arranged in a space present in the radial direction of the slide bearing device between the internal element and the external element.

11. The slide bearing device according to claim 1 , wherein the at least one intermediate element is embodied as a multi-piece part in a circumferential direction of the slide bearing device.

12. The slide bearing device according to claim 11 , wherein respectively one dividing element is provided in the circumferential direction of the slide bearing device between two parts of the at least one intermediate element, respectively.

13. The slide bearing device according to claim 1 , wherein the external element is embodied in at least two parts in an axial direction of the slide bearing device.

14. The slide bearing device according to claim 1 , wherein a hydraulic fluid is arranged in a space present in the radial direction of the slide bearing device between the internal element and the external element.

15. The slide bearing device according to claim 1 , wherein an external surface of the at least one intermediate element that is facing towards the external element and an internal surface of the external element that is facing towards the at least one intermediate element are embodied so as to be curved as seen in a direction of a central axis of the slide bearing device.

16. The slide bearing device according to claim 15 , wherein at least one chosen from an external surface of the internal element, an internal surface of the at least one intermediate element, the external surface of the at least one intermediate element and the internal surface of the external element have a constant radius of curvature.

17. The slide bearing device according to claim 1 , wherein a distance between the at least one intermediate element and the internal element and a distance between the at least one intermediate element and the external element in the radial direction of the slide bearing device are chosen such that tensile strains lie below a defined threshold value in an area of the at least one intermediate element during operation of the slide bearing device.

18. The slide bearing device according to claim 17 , wherein an internal surface of the at least one intermediate element that is facing the internal element and an external surface of the internal element that is facing the at least one intermediate element are embodied so as to be curved as seen in a direction of a central axis of the slide bearing device.

19. The slide bearing device according to claim 1 , wherein an internal surface of the at least one intermediate element that is facing the internal element and an external surface of the internal element that is facing the at least one intermediate element are embodied so as to be curved as seen in a direction of a central axis of the slide bearing device.

Assignees

• Rolls Royce Deutschland Ltd & Co Kg

Inventors

• Lueck Rudolf

Classifications

• F16C33/1025

  with liquid, e.g. oil, as lubricant · CPC title

• F16C33/1075

  Wedges, e.g. ramps or lobes, for generating pressure · CPC title

• F16C17/02

  for radial load only · CPC title

• F16C33/043

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

• F16C32/0633 Primary

  the liquid being retained in a gap · CPC title