WO1996024777A1 - Hydraulic axial bearing - Google Patents
Hydraulic axial bearing Download PDFInfo
- Publication number
- WO1996024777A1 WO1996024777A1 PCT/US1996/001435 US9601435W WO9624777A1 WO 1996024777 A1 WO1996024777 A1 WO 1996024777A1 US 9601435 W US9601435 W US 9601435W WO 9624777 A1 WO9624777 A1 WO 9624777A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- hydraulic
- axial
- pressure
- bearing
- sealing
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C32/00—Bearings not otherwise provided for
- F16C32/06—Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings
- F16C32/0681—Construction or mounting aspects of hydrostatic bearings, for exclusively rotary movement, related to the direction of load
- F16C32/0692—Construction or mounting aspects of hydrostatic bearings, for exclusively rotary movement, related to the direction of load for axial load only
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C23/00—Bearings for exclusively rotary movement adjustable for aligning or positioning
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C23/00—Bearings for exclusively rotary movement adjustable for aligning or positioning
- F16C23/02—Sliding-contact bearings
- F16C23/04—Sliding-contact bearings self-adjusting
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C25/00—Bearings for exclusively rotary movement adjustable for wear or play
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C25/00—Bearings for exclusively rotary movement adjustable for wear or play
- F16C25/02—Sliding-contact bearings
- F16C25/04—Sliding-contact bearings self-adjusting
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C32/00—Bearings not otherwise provided for
- F16C32/06—Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings
- F16C32/0681—Construction or mounting aspects of hydrostatic bearings, for exclusively rotary movement, related to the direction of load
- F16C32/0696—Construction or mounting aspects of hydrostatic bearings, for exclusively rotary movement, related to the direction of load for both radial and axial load
Definitions
- the present invention relates to a hydraulic axial bearing for a radially-supported rotatable shaft or axle.
- an axially- adjustable bearing system which can withstand heavy and variable axial thrust loads.
- One example of this is in the cellulose processing industry, where a multi- purpose axial mill can be subjected to thrust loads on the order of 100 tons, while at the same time having to satisfy high demands for accuracy in axial positioning, in order to achieve an exact grinding gap.
- the axial bearing system mentioned in the PCT publication uses two hydrostatic axial bearings, one on either side of a flange-like pressure plate which is anchored to the shaft or is formed integrally with it.
- Another system is shown in SE 464 370, where two flanges are used instead of one, with the bearings acting in opposed directions, away from one another.
- an hydraulic axial bearing for a radially supported rotating shaft has a fixed flange, a substantially axial sealing gap formed between the flange and an outer sealing ring, and an inner, substantially radial sealing gap formed between the shaft and an inner sealing ring confined in the bearing housing, and means for supplying hydraulic pressure medium to the cavity formed between the sealing gaps, to absorb the axial loadings applied to the axle.
- two such bearings are provided, one on each axial side of the flange.
- the outer sealing ring has low mass, and consequently low moment of inertia, resulting in a closer adaptation to the vibrations of the flange.
- An inner radial gap provides a larger utilized hydraulic area, which provides a higher loading capacity.
- F1G.1 shows a double-sided bearing arrangement as incorporated in the invention.
- FIG.2 shows an exposed and enlarged axial sealing ring, in which the pressure in the cavity is explained as a function of the geometry and the pressure applied to the pressure chamber by the pilot valve.
- FIG.3 shows an enlargement of the inner sealing ring, illustrating the drop of pressure of the medium along the radial gap.
- FIG. 4 shows a practical application of a double- sided bearing arrangement according to the invention.
- the axle 1 or shaft is radially mounted or supported at a distance from one or both sides of a fixed flange 1a.
- each of two axially opposed bearing housings, 4, 5, surrounding the flange 1a there is an outer, axial sealing ring 2 and 3 respectively, which can be displaced within its outer pressure chamber, 4b and 5b, and sealed by means of the seals 2a and 3a respectively.
- a hydraulic pressure medium is applied from the pumps 15 and 16, through the lines C and D to the cavities 10 and 11 formed between sealing gaps 2, 3 and 8,9, by the flange 1a, the axial sealing rings 2, 3, portions 4',5' of the housing 4, 5 and the inner radial sealing rings 4a, 5a.
- This medium is expelled from the cavities through the fixed radial gaps 8, 9, and the adjustable outer, axial sealing gaps 6, 7, which causes a drop in pressure that affects the flange 1a.
- the pilot valve is assisted by a sensor 13 which monitors the position of the axle.
- the evacuation flow is indicated in the figure by I, J and G, H respectively.
- Figure 2 shows an exposed and enlarged axial sealing ring, in which the pressure in the cavity is explained as a function of the geometry and the pressure applied to the pressure chamber by the pilot valve.
- the pilot valve can be programmed to keep the axle in a certain position irrespective of external loadings, and to adjust the position of the axle during operation.
- Figure 3 shows an enlargement of the inner sealing ring 5a, illustrating the drop of pressure of the medium along the radial gap.
- the axle is mounted in spherical axial roller bearings 18 and 19, to have a radial mounting free from play but with some axial load-absorbing capacity.
- the bearing housings 4, 5 form the piston in a linear hydraulic motor with the outer cylinder 20, 21.
- the linear hydraulic motor has two pressure chambers 4c, 5c.
- the volume and pressure of hydraulic medium is regulated via the lines E, F by means of a hydraulic pilot valve 12 and a position sensor 13.
- Pressure chambers 4c and 5c communicate directly with the respective pressure chambers 4b and 5b of the bearing, through the lines A and B, in order to absorb the axial loadings applied to the hydraulic motor, in the manner of "slave" bearings.
- the hydraulic motor is thus operated to adjust the axial position of the axle, and the hydraulic bearings are applied to absorb axial loadings, which can vary in weight and direction.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Support Of The Bearing (AREA)
- Sealing Devices (AREA)
- Mechanical Sealing (AREA)
- Sliding-Contact Bearings (AREA)
- Sealing Of Bearings (AREA)
- Magnetic Bearings And Hydrostatic Bearings (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/894,029 US6082901A (en) | 1995-02-07 | 1996-02-06 | Hydraulic axial bearing |
CA002212433A CA2212433C (en) | 1995-02-07 | 1996-02-06 | Hydraulic axial bearing |
EP96908455A EP0808427A4 (en) | 1995-02-07 | 1996-02-06 | Hydraulic axial bearing |
NO973491A NO973491D0 (en) | 1995-02-07 | 1997-07-30 | Hydraulic axial bearing |
FI973250A FI973250A0 (en) | 1995-02-07 | 1997-08-07 | Hydraulic axial bearing |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE9500424A SE508141C2 (en) | 1995-02-07 | 1995-02-07 | Hydraulic axial bearing for a radially stored shaft |
SE9500424-8 | 1995-02-07 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1996024777A1 true WO1996024777A1 (en) | 1996-08-15 |
Family
ID=20397105
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US1996/001435 WO1996024777A1 (en) | 1995-02-07 | 1996-02-06 | Hydraulic axial bearing |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0808427A4 (en) |
FI (1) | FI973250A0 (en) |
NO (1) | NO973491D0 (en) |
SE (1) | SE508141C2 (en) |
WO (1) | WO1996024777A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN115111266A (en) * | 2022-06-24 | 2022-09-27 | 哈尔滨工业大学(威海) | Multi-embedded point type porous aerostatic bearing |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1268575A (en) * | 1916-02-12 | 1918-06-04 | Anatol David Iskols | Hydraulic thrust-bearing. |
US3146037A (en) * | 1963-01-25 | 1964-08-25 | Mechanical Tech Inc | Thurst bearings |
US4915510A (en) * | 1986-11-12 | 1990-04-10 | Cellwood Machinery Ab | Hydrostatic thrust bearing system |
US5219447A (en) * | 1989-07-27 | 1993-06-15 | Kvaerner Hymac Inc. | Axial bearing system intended for a radially mounted shaft |
US5323972A (en) * | 1990-10-03 | 1994-06-28 | Sunds Defibrator Industries Aktiebolag | Bearing system in a refiner |
-
1995
- 1995-02-07 SE SE9500424A patent/SE508141C2/en not_active IP Right Cessation
-
1996
- 1996-02-06 WO PCT/US1996/001435 patent/WO1996024777A1/en not_active Application Discontinuation
- 1996-02-06 EP EP96908455A patent/EP0808427A4/en not_active Withdrawn
-
1997
- 1997-07-30 NO NO973491A patent/NO973491D0/en unknown
- 1997-08-07 FI FI973250A patent/FI973250A0/en unknown
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1268575A (en) * | 1916-02-12 | 1918-06-04 | Anatol David Iskols | Hydraulic thrust-bearing. |
US3146037A (en) * | 1963-01-25 | 1964-08-25 | Mechanical Tech Inc | Thurst bearings |
US4915510A (en) * | 1986-11-12 | 1990-04-10 | Cellwood Machinery Ab | Hydrostatic thrust bearing system |
US5219447A (en) * | 1989-07-27 | 1993-06-15 | Kvaerner Hymac Inc. | Axial bearing system intended for a radially mounted shaft |
US5323972A (en) * | 1990-10-03 | 1994-06-28 | Sunds Defibrator Industries Aktiebolag | Bearing system in a refiner |
Non-Patent Citations (1)
Title |
---|
See also references of EP0808427A4 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN115111266A (en) * | 2022-06-24 | 2022-09-27 | 哈尔滨工业大学(威海) | Multi-embedded point type porous aerostatic bearing |
CN115111266B (en) * | 2022-06-24 | 2024-02-23 | 哈尔滨工业大学(威海) | Multi-embedded point type porous gas hydrostatic bearing |
Also Published As
Publication number | Publication date |
---|---|
SE9500424D0 (en) | 1995-02-07 |
SE9500424L (en) | 1996-08-08 |
FI973250A (en) | 1997-08-07 |
SE508141C2 (en) | 1998-09-07 |
NO973491L (en) | 1997-07-30 |
EP0808427A4 (en) | 1998-06-17 |
FI973250A0 (en) | 1997-08-07 |
EP0808427A1 (en) | 1997-11-26 |
NO973491D0 (en) | 1997-07-30 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US4578018A (en) | Rotor thrust balancing | |
US5312225A (en) | Axially thrust-compensated turbo machine | |
US5791868A (en) | Thrust load compensating system for a compliant foil hydrodynamic fluid film thrust bearing | |
US4915510A (en) | Hydrostatic thrust bearing system | |
CA1327481C (en) | Centrifugal pump with hydraulic thrust balance and tandem axial seals | |
EP0521007A1 (en) | Control system for regulating the axial loading of a rotor of a fluid machine | |
US4184573A (en) | Double-acting disc brake having floating cylinder head | |
CA2021703C (en) | Axial bearing system intended for a radially mounted shaft | |
US5795073A (en) | Radial and thrust bearing system | |
US4634297A (en) | Means for sealing of a bearing space formed in hydrostatic and aerostatic bearings adapted to receive a fluid | |
US6082901A (en) | Hydraulic axial bearing | |
US20130199363A1 (en) | Axial piston machine | |
US4989997A (en) | Radial load reducing device, and sliding bearing and screw compressor using the device | |
US4222718A (en) | Linear motion thrust block for hydraulic pumps and motors | |
JPH06501524A (en) | Bearing device in refiner | |
WO1996024777A1 (en) | Hydraulic axial bearing | |
CA2212433C (en) | Hydraulic axial bearing | |
JP3059230B2 (en) | Radial piston pump | |
US4258902A (en) | Steering valve with annular sealing element for radial annular gap | |
JP2624464B2 (en) | Deflection controllable rolls for calendars, etc. | |
CN101103210A (en) | Hydrodynamic non-positive-displacement machine with an axially displaceable bladed wheel | |
CN110131305A (en) | Thrust bearing of turbocharger device | |
US4340338A (en) | Hydraulic pressure biased linear motion thrust block for hydraulic pumps and motors | |
CN109899380B (en) | Hybrid bearing with single tiltable pad and static pressure oil cavity working cooperatively | |
EP0187059B1 (en) | Variable friction secondary seal for face seals |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): CA FI NO US |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): AT BE CH DE DK ES FR GB GR IE IT LU MC NL PT SE |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
DFPE | Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101) | ||
WWE | Wipo information: entry into national phase |
Ref document number: 1996908455 Country of ref document: EP |
|
ENP | Entry into the national phase |
Ref document number: 2212433 Country of ref document: CA Ref country code: CA Ref document number: 2212433 Kind code of ref document: A Format of ref document f/p: F |
|
WWE | Wipo information: entry into national phase |
Ref document number: 08894029 Country of ref document: US Ref document number: 973250 Country of ref document: FI |
|
WWP | Wipo information: published in national office |
Ref document number: 1996908455 Country of ref document: EP |
|
WWW | Wipo information: withdrawn in national office |
Ref document number: 1996908455 Country of ref document: EP |