Bearing arrangement with a first bearing layer and a second bearing layer

Patent metadata

Field	Value
Publication number	US-10330148-B2
Application number	US-201514630753-A
Country	US
Kind code	B2
Filing date	Feb 25, 2015
Priority date	Feb 26, 2014
Publication date	Jun 25, 2019
Grant date	Jun 25, 2019

Abstract

A bearing arrangement with a first bearing layer comprising a first bearing support element and a second bearing layer comprising a second bearing support element, the first and second bearing layers being glidingly interconnected by at least one intermediate gliding element, wherein at least one first gliding surface is arranged between the first bearing support element and the at least one intermediate gliding element, and wherein at least one second gliding surface is arranged between the second bearing support member and the at least one intermediate gliding element, the at least one intermediate gliding element being elastically attached to the first bearing support element by means of at least one first flexible connector and to the second bearing support element by means of at least one second flexible connector.

First claim

What is claimed is:

1. A bearing arrangement comprising:
a first bearing layer comprising a first bearing support element and a second bearing layer comprising a second bearing support element, the first and second bearing layers being glidingly interconnected by an intermediate glide element,
a first gliding component arranged between the first bearing support element and the intermediate glide element; and
a second gliding component arranged between the second bearing support element and the intermediate glide element, the intermediate glide element being elastically attached to the first bearing support element by a first flexible connector and to the second bearing support element by a second flexible connector,
wherein the first flexible connector and the second flexible connector are physically separated from each other by the intermediate glide element to maintain relative movement between the first and second bearing support elements.

2. The bearing arrangement according to claim 1 , wherein at least one of the first flexible connector or the second flexible connector comprise at least one of an elastomeric spring or a mechanical spring.

3. The bearing arrangement according to claim 1 , wherein at least one of the first flexible connector and the second flexible connector are relaxed in an unloaded state of the first and second bearing layers.

4. The bearing arrangement according to claim 1 , wherein at least one of the first and second flexible connectors are at least substantially designed for carrying shear loads.

5. The bearing arrangement according to claim 1 , wherein at least one of the first and second bearing layers define one of a cylindrical bearing or a spherical bearing having limited angular amplitude.

6. The bearing arrangement according to claim 5 , wherein at least one of the first and second flexible connectors generate a restoring force when the first and second bearing layers are in a loaded state, the restoring force comprising a magnitude that increases with a current angular amplitude associated with a corresponding one of the first and second bearing layers.

7. The bearing arrangement according to claim 5 , wherein at least one of the first and second bearing support elements and the intermediate glide element define shell-type bushings.

8. The bearing arrangement according to claim 1 , wherein at least one of the first and second bearing layers define linear bearings with limited linear displacement.

9. The bearing arrangement according to claim 8 , wherein at least one of the first and second flexible connectors generate a restoring force when the first and second bearing layers are in a loaded state, the restoring force comprising a magnitude that increases with a current linear displacement associated with a corresponding one of the first and second bearing layers.

10. The bearing arrangement according to claim 1 , wherein at least one of the first gliding component and the second gliding component is formed of polytetrafluoroethylene.

11. A multi-blade rotor comprising:
a multiplicity of rotor blades;
a rotor head with an associated rotor hub,
a bearing arrangement connecting at least one of the multiplicity of rotor blades with the rotor hub, the bearing arrangement having:
a first bearing layer comprising a first bearing support element and a second bearing layer comprising a second bearing support element, the first and second bearing layers being glidingly interconnected by at least one intermediate glide element,
wherein a first gliding component is arranged between the first bearing support element and the intermediate glide element, and
wherein a second gliding component is arranged between the second bearing support element and the intermediate glide element, the intermediate glide element being elastically attached to the first bearing support element by a first flexible connector and to the second bearing support element by a second flexible connector, and
wherein the first flexible connector and the second flexible connector are physically separated from each other by the at least one intermediate glide element to maintain relative movement between the first and second bearing support elements.

12. The multi-blade rotor according to claim 11 , wherein at least one of the first flexible connector or the second flexible connector comprise at least one of an elastomeric spring or a mechanical spring.

13. The multi-blade rotor according to claim 11 , wherein at least one of the first flexible connector and second flexible connector are relaxed in an unloaded state of the first and second bearing layers.

14. The multi-blade rotor according to claim 11 , wherein at least one of the first and second flexible connectors are at least substantially designed for carrying shear loads.

15. The multi-blade rotor according to claim 11 , wherein at least one of the first and second bearing layers define one of a cylindrical bearing or a spherical bearing having limited angular amplitude.

16. The multi-blade rotor according to claim 15 , wherein at least one of the first and second flexible connectors generate a restoring force when the first and second bearing layers are in a loaded state, the restoring force comprising a magnitude that increases with a current angular amplitude associated with a corresponding one of the first and second bearing layers.

17. The multi-blade rotor according to claim 15 , wherein at least one of the first and second bearing support elements and the intermediate glide element define shell-type bushings.

18. The multi-blade rotor according to claim 11 , wherein the rotor hub forms the first bearing support element and at least one of the multiplicity of rotor blades comprises a coupling sleeve that forms the second bearing support element.

19. The multi-blade rotor according to claim 11 , wherein at least one of the first gliding component and the second gliding component is formed of polytetrafluoroethylene.

20. A bearing arrangement comprising:
a first bearing layer comprising a first bearing support element;
a second bearing layer comprising a second bearing support element;
an intermediate glide element disposed between the first and second bearing layers;
a first gliding component arranged between the first bearing support element and the intermediate glide element, and
a second gliding component arranged between second bearing support member and the intermediate glide element;
a first flexible connector elastically attached to the first bearing support element and the intermediate glide element; and
a second flexible connector elastically attached to the second bearing support element and the intermediate glide element,
wherein the first flexible connector and the second flexible connector are physically separated from each other by the intermediate glide element to maintain relative movement between the first and second bearing support elements.

Assignees

• Airbus Helicopters Deutschland GmbH

Inventors

• Buesing Moritz

Classifications

• F16C33/203

  Multilayer structures, e.g. sleeves comprising a plastic lining · CPC title

• B64C27/35 Primary

  having elastomeric joints · CPC title

• F16C11/04

  Pivotal connections (hinges for doors, windows or wings E05D) · CPC title

• F16C33/201

  Composition of the plastic · CPC title

• F16F1/40

  consisting of a stack of similar elements separated by non-elastic intermediate layers {(F16F9/306 takes precedence; laminated constructions to protect buildings against abnormal external influences, e.g. earthquakes, E04H9/022)} · CPC title