Hybrid hydrostatic bearing assembly and wind turbine

Patent metadata

Field	Value
Publication number	US-10935072-B2
Application number	US-201816494367-A
Country	US
Kind code	B2
Filing date	Mar 14, 2018
Priority date	Mar 15, 2017
Publication date	Mar 2, 2021
Grant date	Mar 2, 2021

Abstract

A bearing assembly may include a first bearing ring, a second bearing ring, and at least one row of rolling elements having a plurality of rolling elements that are disposed so as to be capable of rolling on a first raceway of the first bearing ring and on a second raceway of the second bearing ring. At least one hydrostatically supported first sliding bearing segment may be disposed on the first bearing ring. Further, the hydrostatically supported first sliding bearing segment may interact with a first bearing face that is disposed on the second bearing ring. The hydrostatically supported first sliding bearing segment may be mounted so as to be movable in a movement direction that is perpendicular to the first bearing face.

First claim

What is claimed is:

1. A bearing assembly comprising:
a first bearing ring;
a second bearing ring;
a row of rolling elements, wherein a plurality of the rolling elements are disposed so as to be rollable on a first raceway of the first bearing ring and on a second raceway of the second bearing ring; and
a hydrostatically supported first sliding bearing segment disposed on the first bearing ring, wherein the hydrostatically supported first sliding bearing segment is configured to interact with a first bearing face disposed on the second bearing ring, wherein the hydrostatically supported first sliding bearing segment is mounted so as to be movable in a movement direction and tiltable about a tilting axis that is perpendicular to the movement direction.

2. The bearing assembly of claim 1 comprising a hydrostatically supported second sliding bearing segment disposed on the first bearing ring, wherein the hydrostatically supported second sliding bearing segment is configured to interact with a second bearing face disposed on the second bearing ring.

3. The bearing assembly of claim 2 comprising a plurality of the hydrostatically supported second sliding bearing segments disposed on the first bearing ring, wherein the plurality of the hydrostatically supported second sliding bearing segments are mutually spaced apart in a circumferential direction of the first bearing ring and interact with the second bearing face on the second bearing ring.

4. The bearing assembly of claim 3 comprising a plurality of the hydrostatically supported first sliding bearing segments disposed on the first bearing ring, wherein the plurality of the hydrostatically supported first sliding bearing segments are mutually spaced apart in the circumferential direction of the first bearing ring and interact with the first bearing face on the second bearing ring, wherein the plurality of hydrostatically supported first and second sliding bearing segments are disposed asymmetrically with respect to a radial plane that is perpendicular to a rotation axis of the bearing assembly.

5. The bearing assembly of claim 1 wherein the first bearing ring is configured as a stationary bearing ring and the second bearing ring is rotatable relative to the first bearing ring.

6. The bearing assembly of claim 1 wherein the rolling elements are tapered rollers.

7. A bearing assembly comprising:
a first bearing ring;
a second bearing ring;
a row of rolling elements, wherein a plurality of the rolling elements are disposed so as to be rollable on a first raceway of the first bearing ring and on a second raceway of the second bearing ring;
a hydrostatically supported first sliding bearing segment disposed on the first bearing ring, wherein the hydrostatically supported first sliding bearing segment is configured to interact with a first bearing face disposed on the second bearing ring; and
a plurality of the hydrostatically supported first sliding bearing segments disposed on the first bearing ring, wherein the plurality of the hydrostatically supported first sliding bearing segments are mutually spaced apart in a circumferential direction of the first bearing ring and interact with the first bearing face on the second bearing ring.

8. The bearing assembly of claim 7 wherein the plurality of the hydrostatically supported first sliding bearing segments are distributed uniformly across an entirety of the first bearing ring along the circumferential direction.

9. The bearing assembly of claim 7 wherein the plurality of the hydrostatically supported first sliding bearing segments are distributed non-uniformly across an entirety of the first bearing ring along the circumferential direction.

10. A bearing assembly comprising:
a first bearing ring;
a second bearing ring;
a row of rolling elements, wherein a plurality of the rolling elements are disposed so as to be rollable on a first raceway of the first bearing ring and on a second raceway of the second bearing ring;
a hydrostatically supported first sliding bearing segment disposed on the first bearing ring, wherein the hydrostatically supported first sliding bearing segment is configured to interact with a first bearing face disposed on the second bearing ring; and
a first sliding bearing element that is received in a receptacle pocket of the first bearing ring such that a first compression chamber is formed between the first bearing ring and the first sliding bearing element, wherein the first sliding bearing element is configured such that a second compression chamber is formed between the first sliding bearing element and the second bearing ring, wherein the first and second compression chambers are connected via a duct that extends through the first sliding bearing element.

11. The bearing assembly of claim 10 wherein the first sliding bearing element includes a first pressure surface that faces the first compression chamber and a second pressure surface that faces the second compression chamber, wherein the first pressure surface is smaller than the second pressure surface.

12. The bearing assembly of claim 11 wherein the second pressure surface of the first sliding bearing element is delimited by a peripheral protrusion.

13. The bearing assembly of claim 10 wherein a cross-sectional constriction is disposed in the duct.

14. The bearing assembly of claim 10 wherein the first sliding bearing element is configured such that a plurality of the second compression chambers are formed between the first sliding bearing element and the second bearing ring, wherein the first compression chamber and the plurality of the second compression chambers are connected by ducts that extend through the first sliding bearing element.

15. The bearing assembly of claim 10 wherein the first sliding bearing element includes a first pressure surface that faces the first compression chamber and a plurality of second pressure surfaces that face the second compression chamber, wherein the first pressure surface is smaller than a sum of the plurality of second pressure surfaces.

16. A bearing assembly comprising:
a first bearing ring;
a second bearing ring;
a row of rolling elements, wherein a plurality of the rolling elements are disposed so as to be rollable on a first raceway of the first bearing ring and on a second raceway of the second bearing ring; and
a hydrostatically supported first sliding bearing segment disposed on the first bearing ring, wherein the hydrostatically supported first sliding bearing segment is configured to interact with a first bearing face disposed on the second bearing ring, wherein the hydrostatically supported first sliding bearing segment is mounted so as to be movable in a movement direction that is perpendicular to the first bearing face.

Assignees

• Thyssenkrupp Rothe Erde Gmbh
• Thyssenkrupp Ag

Inventors

• Lüneburg Bernd
• Rollmann Jörg
• Elfert Gunther

Classifications

• F16C33/7813

  for tapered roller bearings · CPC title

• F16C17/06

  with tiltably-supported segments, e.g. Michell bearings {(with flexible leaves F16C17/042; hydrostatic F16C32/0666)} · CPC title

• F16C17/03

  with tiltably-supported segments, e.g. Michell bearings {(hydrostatic bearings with tiltably supported bearing pads F16C32/0666; made from a plurality of rods F16C33/26; with flexible leaves F16C17/024; hydrodynamic bearings with chambers F16C33/1075)} · CPC title

• F05D2240/53

  Hydrodynamic or hydrostatic bearings · CPC title

• F03D80/70

  Bearing or lubricating arrangements · CPC title