US3751119A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Auxiliary bearing for mounting a turbine shaft
Assignee: BBC Brown Boveri AG Switzerland
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Filing: 1972-04-18
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Granted: 1973-08-07
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Expires: 1992-04-18
Abstract
Abstract An auxiliary bearing structure for temporary use during installation of turbine shafting for temporarily supporting and aligning adjoining flanged ends of two shaft sections to be connected together at the flanges. The auxiliary bearing consists primarily of a bearing yoke located in the centroidal plane of the adjoining shaft sections below the end flanges which rest upon the bearing surface, the latter being pressure lubricated to permit turning of the shaft sections. The bearing yoke is vertically adjustable in the radial direction of the shafting in order to effect the desired alignment and can be fixed in the lateral direction after reaching the position of alignment. Means are also provided for holding the auxiliary bearing yoke in a ''''down'''' position out of contact with the shaft flanges while the turbine is in service.
Inventors
- 👤 H Bellati
- 👤 H Huber
- 👤 W Rutti
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 05:21
CPC Classifications
F; F16; F16C; F16C32/00; F16C32/06; F16C32/0662; F16C32/0666; F01; F01D; F01D25/00; F01D25/16; F01D25/166; F16C23/00; F16C23/02; F16C32/067
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
119 words
An auxiliary bearing structure for temporary use during installation of turbine shafting and particularly for temporarily supporting and aligning the adjoining flanged ends of two shaft sections to be connected together at said flanges, comprising an auxiliary bearing yoke located in the centroidal plane of the adjOining shaft sections below the flanged ends thereof, said flanges resting upon the arcuate bearing surface of said yoke, means supplying said bearing surface with a pressurized lubricating medium to facilitate turning of the flanged ends on the bearing surface, means for adjusting said bearing yoke in the radial direction of said shafting to attain the desired position of shaft alignment, and means for thereafter fixing said bearing yoke in a lateral direction.
Claim 2
Dependent Claim
119 words
An auxiliary bearing structure for temporary use during installation of turbine shafting and particularly for temporarily supporting and aligning the adjoining flanged ends of two shaft sections to be connected together at said flanges, comprising an auxiliary bearing yoke located in the centroidal plane of the adjOining shaft sections below the flanged ends thereof, said flanges resting upon the arcuate bearing surface of said yoke, means supplying said bearing surface with a pressurized lubricating medium to facilitate turning of the flanged ends on the bearing surface, means for adjusting said bearing yoke in the radial direction of said shafting to attain the desired position of shaft alignment, and means for thereafter fixing said bearing yoke in a lateral direction.
Claim 3
Dependent Claim
23 words
An auxiliary bearing structure as defined in claim 1 wherein said bearing yoke is incorporated in the bearing pedestal structure of the turbine.
Claim 4
Dependent Claim
35 words
An auxiliary bearing structure as defined in claim 1 and which includes means for holding said bearing yoke in a down positon free from contact with said shaft flanges while said turbine is in service.
Claim 5
Dependent Claim
59 words
An auxiliary bearing structure as defined in claim 1 wherein said means for adjusting said bearing yoke in the radial direction is constituted by hydraulic jacks and which further includes adjustable wedges slidable along the lower face of said bearing yoke to brace the yoke after movement thereof into the proper position of shaft alignment by said hydraulic jacks.
Claim 6
Dependent Claim
30 words
An auxiliary bearing structure as defined in claim 4 and wherein said adjustable wedges include keys located in and slidable along slots provided in the bearing pedestal of the turbine.
Claim 7
Dependent Claim
18 words
An auxiliary bearing structure as defined in claim 5 wherein said adjustable wedges are actuated by screw bolts.
Claim 8
Dependent Claim
55 words
An auxiliary bearing structure as defined in claim 1 and which further includes a cover enclosing said bearing yoke and which is provided with lateral pass-through openings accommodating said flanged shaft ends, and ring seals at said openings to prevent escape of said pressurized lubricating medium injected from time to time to said bearing surface.
Claim 9
Dependent Claim
33 words
An axuiliary bearing structure as defined in claim 1 wherein said means for fixing said bearing yoke in a lateral direction is constituted by screw bolts engageable with the sides of said yoke.
References Cited (Backward Citations)
US315777A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-08-06 | 1977-02-05 | 1977-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-06 | 1981-02-05 | 1981-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-06 | 1985-02-05 | 1985-08-07 | $7700.00 | Window Closed / Lapsed |