Bearing assembly for supporting a rotor shaft of a gas turbine engine
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F01D-025/16
F16C-035/073
F16C-033/30
F02C-003/04
F02C-007/06
F01D-005/02
F01D-021/04
F16C-027/04
F16C-019/16
출원번호
US-0198776
(2016-06-30)
등록번호
US-9909451
(2018-03-06)
우선권정보
IN-3524/CHE/2015 (2015-07-09)
발명자
/ 주소
Carter, Bruce Alan
Ganiger, Ravindra Shankar
Mondal, Bhaskar Nanda
Miller, Jacob Patrick
Mahesh, Sivakumar
Kirkeng, Kevin L.
Vanapalli, Veeraraju
출원인 / 주소
General Electric Company
대리인 / 주소
General Electric Company
인용정보
피인용 횟수 :
0인용 특허 :
48
초록▼
In one aspect, a bearing assembly for supporting a rotor shaft relative to a support structure of a gas turbine engine may generally include a bearing including an outer race and an inner race, an outer bearing housing configured to extend radially between the outer race of the bearing and the suppo
In one aspect, a bearing assembly for supporting a rotor shaft relative to a support structure of a gas turbine engine may generally include a bearing including an outer race and an inner race, an outer bearing housing configured to extend radially between the outer race of the bearing and the support structure of the gas turbine engine and an inner bearing support configured to extend radially between the inner race of the bearing and the rotor shaft. In addition, the outer bearing housing and the inner bearing support each include at least one radially extending spring arm such that the outer bearing housing and the inner bearing support collectively form two springs coupled in series between the support structure and the rotor shaft.
대표청구항▼
1. A bearing assembly for supporting a rotor shaft relative to a support structure of a gas turbine engine, the bearing assembly comprising: a bearing including an outer race and an inner race;an outer bearing housing configured to extend radially between the outer race and the support structure of
1. A bearing assembly for supporting a rotor shaft relative to a support structure of a gas turbine engine, the bearing assembly comprising: a bearing including an outer race and an inner race;an outer bearing housing configured to extend radially between the outer race and the support structure of the gas turbine engine; andan inner bearing support extending radially between an outer support end configured to be disposed adjacent to the inner race of the bearing and an inner support end configured to be rotatably coupled to the rotor shaft, the inner bearing support including a first spring arm and a second spring arm extending radially between the inner and outer support ends, the inner bearing support further including a stiffening rib separating the first spring arm from the second spring arm such that the first spring arm extends radially outwardly from the stiffening rib towards the outer support end and the second spring arm extends radially inwardly from stiffening rib towards the inner support end. 2. The bearing assembly as claimed in claim 1, wherein the first and second spring arms extend axially relative to the inner and outer support ends such that the stiffening rib is spaced axially from the inner and outer support ends. 3. The bearing assembly as claimed in claim 1, wherein the inner bearing support includes an inner bearing ring disposed at the outer support end, the inner bearing ring being configured to be coupled to the inner race of the bearing. 4. The bearing assembly as claimed in claim 1, wherein the inner bearing support includes a mounting ring disposed at the inner support end, the mounting ring being configured to be rotationally coupled to the rotor shaft via a mounting race. 5. The bearing assembly as claimed in claim 4, wherein the mounting ring is coupled to the mounting race using a plurality of radially extending pins, the pins being configured to fail when a moment load is transmitted through the shaft that exceeds a predetermined load threshold. 6. The bearing assembly as claimed in claim 4, wherein a sliding interface is defined between the mounting ring and the mounting race. 7. The bearing assembly as claimed in claim 1, wherein the outer bearing housing extends radially between an outer housing end configured to be coupled to the support structure and inner housing end configured to be disposed adjacent to the outer race of the bearing, the outer bearing housing including a first housing spring arm and a second housing spring arm extending between the inner and outer housing ends. 8. The bearing assembly as claimed in claim 7, wherein the outer bearing housing further includes a stiffening ring separating the first housing spring arm from the second housing spring arm such that the first housing spring arm extends between the stiffening ring and the outer housing end and the second housing spring arm extends between stiffening ring and the inner housing end. 9. The bearing assembly as claimed in claim 8, wherein the first and second housing spring arms extend axially relative to the inner and outer housing ends such that the stiffening ring is spaced axially from the inner and outer housing ends. 10. The bearing assembly as claimed in claim 7, wherein the outer bearing housing includes a mounting flange disposed at the outer housing end that is configured to be coupled to the support structure and wherein the outer bearing housing includes an outer bearing ring disposed at the inner housing end that is configured to be coupled to the outer race of the bearing. 11. A bearing assembly for supporting a rotor shaft relative to a support structure of a gas turbine engine, the bearing assembly comprising: a bearing including an outer race and an inner race;an outer bearing housing extending radially from an inner housing end configured to be disposed adjacent to the outer race of the bearing and an outer housing end configured to be coupled to the support structure of the gas turbine, the outer bearing housing including a first spring arm and a second spring arm extending between the inner and outer housing ends, the outer bearing housing further including a stiffening ring separating the first spring arm from the second spring arm such that the first spring arm extends between the stiffening rib and the outer housing end and the second spring arm extends between stiffening rib and the inner housing end; andan inner bearing support configured to extend radially between the inner race of the bearing and the rotor shaft, wherein the inner bearing support extends radially between an outer support end configured to be disposed adjacent to the inner race of the bearing and an inner support end configured to be rotatably coupled to the rotor shaft, the inner bearing support including a first support spring arm, a second support spring arm extending radially between the inner and outer support ends, and a stiffening rib separating the first support spring arm from the second support spring arm such that the first support spring arm extends radially outwardly from the stiffening rib towards the outer support end and the second support spring arm extends radially inwardly from the stiffening rib towards the inner support end. 12. The bearing assembly as claimed in claim 11, wherein the first and second spring arms extend axially relative to the inner and outer housing ends such that the stiffening ring is spaced axially from the inner and outer housing ends. 13. The bearing assembly as claimed in claim 11, wherein the outer bearing housing includes a mounting flange disposed at the outer housing end, the mounting ring being configured to be coupled to the support structure. 14. The bearing assembly as claimed in claim 11, wherein the outer bearing housing includes an outer bearing ring disposed at the inner housing end, the outer bearing ring being configured to be coupled to the outer race of the bearing. 15. The bearing assembly as claimed in claim 11, wherein the first and second support spring arms extend axially relative to the inner and outer support ends such that the stiffening rib is spaced axially from the inner and outer support ends. 16. The bearing assembly as claimed in claim 11, wherein the inner bearing support includes a mounting ring disposed at the inner support end, the mounting ring being configured to be rotationally coupled to the rotor shaft via a mounting race. 17. The bearing assembly as claimed in claim 16, wherein the mounting ring is coupled to the mounting race using a plurality of radially extending pins, the pins being configured to fail when a moment load is transmitted through the shaft that exceeds a predetermined load threshold.
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