Oil transfer bearing

Patent metadata

Field	Value
Publication number	US-9695710-B2
Application number	US-201514831963-A
Country	US
Kind code	B2
Filing date	Aug 21, 2015
Priority date	Sep 8, 2014
Publication date	Jul 4, 2017
Grant date	Jul 4, 2017

Abstract

A transfer bearing assembly includes a transfer bearing shaft. An oil transfer bearing surrounds the transfer bearing shaft. A radially extending tube is attached to the transfer bearing shaft and is configured to engage a carrier on a speed reduction device.

First claim

What is claimed is:

1. A transfer bearing assembly including:
a transfer bearing shaft;
an oil transfer bearing surrounding the transfer bearing shaft, wherein the oil transfer bearing includes a stationary outer bearing and a rotating inner bearing attached to the transfer bearing shaft; and
a radially extending tube attached to the transfer bearing shaft configured to engage a carrier on a speed reduction device.

2. The assembly of claim 1 , wherein the stationary outer bearing includes at least one race aligned with at least one opening in the rotating inner bearing configured to transfer oil from the stationary bearing to the transfer bearing shaft through the rotating inner bearing.

3. The assembly of claim 2 , wherein the transfer bearing shaft includes at least one axially extending passage in communication with one of the at least one opening in the rotating inner bearing.

4. The assembly of claim 3 , wherein a radially inner end of the tube engages the transfer bearing shaft and a radially outer end of the tube engages a carrier.

5. The assembly of claim 4 , wherein the tube is configured to move in a radial direction relative to the transfer bearing shaft.

6. The assembly of claim 4 , wherein the transfer bearing shaft includes at least one radially extending opening in communication with the axially extending passage and the tube is located within the radially extending opening.

7. A gas turbine engine section including:
a planetary gear set including a rotating carrier; and
a transfer bearing assembly including:
a transfer bearing shaft;
an oil transfer bearing surrounding the transfer bearing shaft, wherein the oil transfer bearing includes a stationary outer bearing and a rotating inner bearing attached to the transfer bearing shaft; and
a radially extending tube attached to the transfer bearing shaft configured to engage the rotating carrier on a speed reduction device.

8. The gas turbine engine section of claim 7 , wherein the stationary outer bearing includes at least one race aligned with at least one opening in the rotating inner bearing configured to transfer oil from the stationary bearing to the transfer bearing shaft through the rotating inner bearing.

9. The gas turbine engine section of claim 8 , wherein the transfer bearing shaft includes at least one axially extending passage in communication with one of the at least one opening in the rotating inner bearing.

10. The gas turbine engine section of claim 9 , wherein a radially inner end of the tube engages the transfer bearing shaft and a radially outer end of the tube engages the carrier.

11. The gas turbine engine section of claim 9 , wherein the transfer bearing shaft includes at least one radially extending opening in communication with the axially extending passage and the tube is located within the radially extending opening.

12. The gas turbine engine section of claim 7 , wherein the tube is configured to move in a radial direction relative to the transfer bearing shaft.

13. The gas turbine engine section of claim 7 , wherein the transfer bearing shaft is attached to the carrier with a flexible member.

14. The gas turbine engine section of claim 7 , wherein the transfer bearing shaft is attached to the carrier with a sliding fit pin connection.

15. The gas turbine engine section of claim 7 , wherein the transfer bearing shaft includes a carrier attachment flange having a plurality of openings for receiving fasteners to attach the transfer bearing shaft to the carrier.

16. A method of lubricating a component on a gas turbine engine comprising:
directing a lubricant through an oil transfer bearing toward at least one axially extending passage in a transfer bearing shaft, wherein the at least one axially extending passage is in communication with a radially extending passage and a tube is located within the radially extending passage; and
directing the lubricant to a carrier from the axially extending passage through a tube capable of moving relative to the transfer bearing shaft in a radially direction.

17. The method of claim 16 , wherein a radially inner end of the tube engages the transfer bearing shaft and a radially outer end of the tube engages the carrier.

Assignees

• United Technologies Corp

Inventors

• Mccune Michael E
• Muldoon Marc J

Classifications

• F16H57/0482

  Gearings with gears having orbital motion · CPC title

• F05D2260/98

  Lubrication · CPC title

• F02C7/06

  Arrangements of bearings (bearings F16C); Lubricating ({of turbo machines F01D25/18; of machines or} engines in general F01M) · CPC title

• F05D2220/32

  in gas turbines · CPC title

• F16H57/0479

  Gears or bearings on planet carriers · CPC title