A lubrication system for a fan drive planetary gear system according to an exemplary aspect of the present disclosure includes, among other things, a stationary first bearing configured to receive a lubricant from a lubricant input, the stationary first bearing is axially aligned with a fan drive sh
A lubrication system for a fan drive planetary gear system according to an exemplary aspect of the present disclosure includes, among other things, a stationary first bearing configured to receive a lubricant from a lubricant input, the stationary first bearing is axially aligned with a fan drive shaft. A second bearing is configured to rotate with the fan drive shaft, the first bearing engages the second bearing and is configured to transfer the lubricant from the first bearing to the second bearing and into at least one fluid passage in the fan drive shaft. A conduit fluidly connects the at least one passage in the fan drive shaft with at least one component on the fan drive gear system.
대표청구항▼
1. A lubrication system for a fan drive planetary gear system comprising: a stationary first bearing in fluid communication with a lubricant input, the stationary first bearing is axially aligned with a fan drive output shaft;a second bearing rotating with the fan drive output shaft, the stationary
1. A lubrication system for a fan drive planetary gear system comprising: a stationary first bearing in fluid communication with a lubricant input, the stationary first bearing is axially aligned with a fan drive output shaft;a second bearing rotating with the fan drive output shaft, the stationary first bearing engages the second bearing and transfers the lubricant from the stationary first bearing to the second bearing and into at least one fluid passageway in the fan drive output shaft; anda conduit fluidly connecting the at least one passageway in the fan drive output shaft with at least one component on the fan drive gear system. 2. The lubrication system of claim 1, including an inner first race on the stationary first bearing transferring lubricant to a first opening in registration with the inner first race in the second bearing. 3. The lubrication system of claim 2, wherein the fan drive gear system includes a first axial side and a second axial side, the stationary first bearing, the second bearing, and a fan output drive shaft bearing is located on the first axial side of the fan drive gear system. 4. The lubrication system of claim 3, wherein the stationary first bearing and the second bearing are mounted between the fan output drive shaft bearing and the fan drive gear system. 5. The lubrication system of claim 3, wherein the stationary first bearing and the second bearing are located radially inward from a radially innermost portion of the fan output drive shaft bearing. 6. The lubrication system of claim 5, wherein the fan drive gear system includes a sun gear attached to an input drive shaft rotating at a first rotational speed and an output attached to the fan drive output shaft rotating at a second rotational speed, the first rotational speed being greater than the second rotational speed, and the second bearing is fixedly attached to the fan drive output shaft. 7. The lubrication system of claim 6, wherein the fan drive gear system includes a plurality of planet gears mounted on bearings and the bearing includes at least one of a ball bearing, a roller bearing, and a journal bearing. 8. The lubrication system of claim 7, wherein the stationary first bearing and the second bearing are disposed about a rotational axis. 9. The lubrication system of claim 8, wherein the conduit is parallel to the rotational axis and at least partially radially aligned with at least one planet gear of the plurality of planet gears of the fan drive gear system. 10. The lubrication system of claim 2, wherein the at least one fluid passageway extends from a radially outer side of the fan drive output shaft to a radially inner side of the fan drive output shaft and the conduit is flexible. 11. The lubrication system of claim 2, wherein the at least one component of the fan drive gear system includes at least one of a ring gear, a sun gear, a planetary gear, and a bearing. 12. The lubrication system of claim 11, wherein the fan drive gear system includes a substantially symmetric carrier. 13. A fan drive planetary gear system for a gas turbine engine comprising: a fan drive output shaft including at least one fluid passageway;a planetary gear system coupled to the fan drive output shaft;a stationary first bearing in fluid communication with a lubricant from a lubricant input;a second bearing rotating with the fan drive output shaft and receive the lubricant from the first bearing; anda conduit fluidly connecting the at least one fluid passageway in the fan drive output shaft to at least one component of the planetary gear system. 14. The system of claim 13, including an inner first race on the stationary first bearing transferring lubricant to a first opening in registration with the inner first race in the second bearing. 15. The system of claim 14, wherein the first bearing and the second bearing are located radially inward from a radially innermost portion of a fan output drive shaft bearing. 16. The system of claim 15, wherein the second bearing is fixedly attached to the fan drive output shaft and the at least one fluid passageway extends from a radially outer side of the fan drive output shaft to a radially inner side of the fan drive output shaft. 17. The system of claim 16, wherein the planetary gear system includes a substantially symmetric carrier. 18. A method of lubricating a component on a gas turbine engine comprising: directing a lubricant through an oil transfer bearing having a stationary first bearing and a second bearing rotating with a fan drive output shaft;directing the lubricant from the oil transfer bearing through at least one passageway on the fan drive output shaft;directing the lubricant through a conduit connecting the at least one passageway on the fan drive output shaft to at least one component on a planetary gear system. 19. The method of claim 18, including flexing the conduit in response to relative movement between the fan drive output shaft and a carrier on the planetary gear system, wherein the at least one passageway extends from a radially outer side of the fan drive output shaft to a radially inner side of the fan drive output shaft and the conduit is flexible. 20. The method of claim 19, including leaking the lubricant from the oil transfer bearing and directing the lubricant leaked from the oil transfer bearing to at least one bearing system on the fan drive output shaft.
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이 특허에 인용된 특허 (27)
Wayman Robert W. (Nagoya JPX) Kawamoto Mutsumi (Nagoya JPX) Sakakibara Shiro (Anjo JPX), Automotive transmission.
Barnsby Roger Michael (Manchester CT) McKibbin Albert Hunt (Cromwell CT) Aufischer Rainer Werner (Ohlsdorf ATX), Coated planet gear journal bearing and process of making same.
Kalyan Jagdish C. (822 NE. 62nd Seattle WA 98155) Dickinson Bryan J. (24219 Marine View Drive Des Moines WA 98016), Lubrication system for an air motor.
van Deursen Petrus H. (Deurne NLX) Svab Eugen (Cologne DEX) Abromeit Gerhard (Cologne DEX), Transmission for vehicles, in particular for automobiles with front wheel drive.
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