SE506134C2 - Biasing device for a radial bearing unit - Google Patents

Biasing device for a radial bearing unit

Info

Publication number
SE506134C2
SE506134C2 SE9501170A SE9501170A SE506134C2 SE 506134 C2 SE506134 C2 SE 506134C2 SE 9501170 A SE9501170 A SE 9501170A SE 9501170 A SE9501170 A SE 9501170A SE 506134 C2 SE506134 C2 SE 506134C2
Authority
SE
Sweden
Prior art keywords
pressure
bearing units
radial bearing
bearing
bearing unit
Prior art date
Application number
SE9501170A
Other languages
Swedish (sv)
Other versions
SE9501170L (en
SE9501170D0 (en
Inventor
Thomas Arvidsson
Original Assignee
Sprout Bauer Inc Andritz
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sprout Bauer Inc Andritz filed Critical Sprout Bauer Inc Andritz
Priority to SE9501170A priority Critical patent/SE506134C2/en
Publication of SE9501170D0 publication Critical patent/SE9501170D0/en
Priority to PCT/US1996/003396 priority patent/WO1996030661A1/en
Priority to CA002216706A priority patent/CA2216706C/en
Priority to US08/930,505 priority patent/US6082907A/en
Priority to EP96910438A priority patent/EP0861382A1/en
Publication of SE9501170L publication Critical patent/SE9501170L/en
Priority to NO974410A priority patent/NO974410D0/en
Publication of SE506134C2 publication Critical patent/SE506134C2/en

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
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/54—Systems consisting of a plurality of bearings with rolling friction
    • F16C19/546—Systems with spaced apart rolling bearings including at least one angular contact bearing
    • F16C19/547—Systems with spaced apart rolling bearings including at least one angular contact bearing with two angular contact rolling bearings
    • F16C19/548—Systems with spaced apart rolling bearings including at least one angular contact bearing with two angular contact rolling bearings in O-arrangement
    • 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
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/22—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
    • F16C19/34—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load
    • F16C19/36—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with a single row of rollers
    • 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
    • F16C25/00—Bearings for exclusively rotary movement adjustable for wear or play
    • F16C25/06—Ball or roller bearings
    • 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
    • F16C25/06—Ball or roller bearings
    • F16C25/08—Ball or roller 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
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/22—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
    • F16C19/30—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for axial load mainly

Abstract

Axially spaced radial bearing units (30, 50) for a shaft assembly are pre-loaded by hydraulic pressure. Each of the bearing units is mounted to an axially displaceable seat (40, 60). The pre-loading pressure between the two bearing units (30, 50) is maintained at a constant pre-loading pressure by a hydraulic pressure which is exerted in chambers (44, 64) partially defined by the seats. A pressure accumulator (70) supplies pressure to the chambers (44, 64) so that a constant pre-loading pressure may be applied to the radial bearing units (30, 50) while allowing for axial displacement of the bearing units and the shaft (12).

Description

ÉÛE: 134 2 tioner att pàlagd radiallast kan variera, då ökar/minskar be- hovet av axiell förspänning i motsvarande grad. Ändamålet med föreliggande uppfinning är att àstadkoma en ra- diallagerenhet enligt ovan med reglerbar axiell förspànnings- grad och med bibehållen axiell förskjutbarhet. ÉÛE: 134 2 tion that the applied radial load can vary, then the need for axial preload increases / decreases correspondingly. The object of the present invention is to provide a radial bearing unit as above with an adjustable degree of axial prestressing and with maintained axial displaceability.

Fig. 1 visar en radiallagerenhet med anordning enligt uppfin- ningen. Pà axeln 1 finns två axial/radiallager 2, 3 anordnade.Fig. 1 shows a radial bearing unit with device according to the invention. On the shaft 1 there are two axial / radial bearings 2, 3 arranged.

Lagrens ytterringar är fast monterade i resp. lagersâte 4, 5, vilka i sin tur är axiellt förskjutbara men ej roterbara i det omgivande lagerhuset 6. På grund av sin yttre form bildar la- gersätena tillsamans med lagerhuset och tàtningarna 7 de hyd- rauliska tryckkamrarna 8 resp. 9. Tryckkamrarna komunicerar med varandra via ledningen 10 och tillförs ett trycksatt hyd- raulmedium via ackumulatorn 11.The outer rings of the bearings are fixedly mounted in resp. bearing seats 4, 5, which in turn are axially displaceable but not rotatable in the surrounding bearing housing 6. Due to their external shape, the bearing seats together with the bearing housing and the seals 7 form the hydraulic pressure chambers 8 and 8, respectively. 9. The pressure chambers communicate with each other via the line 10 and a pressurized hydraulic medium is supplied via the accumulator 11.

Hydraultrycket påverkar lagersätena i inbördes motsatta rikt- ningar för att åstadkomma önskad axiell förspânning. Genom an- slutningen 12 kan trycket i ackumulatorn ökas eller minskas allt efter önskad förspänning.The hydraulic pressure affects the bearing seats in mutually opposite directions to achieve the desired axial prestress. Through the connection 12, the pressure in the accumulator can be increased or decreased depending on the desired bias voltage.

Eftersom de axiellt tryckexponerade areorna i tryckkamrarna 8 resp. 9 är lika stora och då kamrarna är sammankopplade genom ledningen 10 så kan lagersätena fritt röra sig axiellt. För- spänningen förblir konstant, men mängden hydraulmedium skiftar från ena kammaren till den andra.Since the axially pressure-exposed areas in the pressure chambers 8 resp. 9 are equal in size and when the chambers are connected through the conduit 10, the bearing seats can move freely axially. The bias voltage remains constant, but the amount of hydraulic medium shifts from one chamber to the other.

BNSDOCID: BNSDOCID:

Claims (1)

1. PATENTICRAV nefattande två axial/radiallagerenheter (2, 3) vilka är N monterade i resp. relativt ett lagerhus (6) axiellt förskjgt- anordnade tätningar (7), k à n n e t e c k n a d av att tryckkamrarna (8, 9) står i direkt flödesförbindelse med r- andra via en ledning (10) vilken försörjs med ett regler _yt (12) men statiskt tryck från en ackumulatortank (11) varmed tillhandahållas an likfarmig förapänningakraft mellan lagggan- heterna oberoende av deras axiella position i lagersâtet oberoende av driftslàget av den lagrade axeln. BNSDOCID:PATENTIC REQUIREMENT comprising two axial / radial bearing units (2, 3) which are N mounted in resp. relative to a bearing housing (6) axially offset seals (7), characterized in that the pressure chambers (8, 9) are in direct flow connection with r-other via a line (10) which is provided with a control surface (12) but static pressure from an accumulator tank (11) thereby providing a uniform heat pre-tensioning force between the bearing units regardless of their axial position in the bearing seat regardless of the operating position of the bearing shaft. BNSDOCID:
SE9501170A 1995-03-31 1995-03-31 Biasing device for a radial bearing unit SE506134C2 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
SE9501170A SE506134C2 (en) 1995-03-31 1995-03-31 Biasing device for a radial bearing unit
PCT/US1996/003396 WO1996030661A1 (en) 1995-03-31 1996-03-13 A pre-loading device for a radial-bearing unit
CA002216706A CA2216706C (en) 1995-03-31 1996-03-13 A pre-loading device for a radial-bearing unit
US08/930,505 US6082907A (en) 1995-03-31 1996-03-13 Pre-loading device for a radical-bearing unit
EP96910438A EP0861382A1 (en) 1995-03-31 1996-03-13 A pre-loading device for a radial-bearing unit
NO974410A NO974410D0 (en) 1995-03-31 1997-09-24 Radial biasing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9501170A SE506134C2 (en) 1995-03-31 1995-03-31 Biasing device for a radial bearing unit

Publications (3)

Publication Number Publication Date
SE9501170D0 SE9501170D0 (en) 1995-03-31
SE9501170L SE9501170L (en) 1996-10-01
SE506134C2 true SE506134C2 (en) 1997-11-17

Family

ID=20397769

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9501170A SE506134C2 (en) 1995-03-31 1995-03-31 Biasing device for a radial bearing unit

Country Status (5)

Country Link
EP (1) EP0861382A1 (en)
CA (1) CA2216706C (en)
NO (1) NO974410D0 (en)
SE (1) SE506134C2 (en)
WO (1) WO1996030661A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU1197679A1 (en) * 1983-01-17 1985-12-15 Do Polt Ivnii Gornospasatelnog Composition for chemical generator of oxygen
DE102009058355A1 (en) * 2009-12-15 2011-06-16 Aktiebolaget Skf Antifriction bearing device for bearing arrangement, has inner ring with inner ring carrier, outer ring with outer ring carrier, and rolling unit shifting between inner ring carrier and outer ring carrier

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1893995A (en) * 1930-03-07 1933-01-10 Jung Karl Bearing for accurately running shafts using ball bearings
AT279281B (en) * 1968-02-23 1970-02-25 Man Turbo Gmbh Axially braced bearings, especially for high-speed shafts
US4626111A (en) * 1985-07-25 1986-12-02 Farrel Corporation Self-compensating anti-friction bearing clearance device
CH673052A5 (en) * 1987-01-30 1990-01-31 Bbc Brown Boveri & Cie
SE462572B (en) * 1988-05-03 1990-07-16 Skf Ab DEVICE FOR TWO PAIRS INSTALLED ROLLING STORAGE TAKING UP TO AXIAL AND RADIAL LOADING

Also Published As

Publication number Publication date
CA2216706C (en) 2001-07-10
SE9501170L (en) 1996-10-01
WO1996030661A1 (en) 1996-10-03
EP0861382A1 (en) 1998-09-02
SE9501170D0 (en) 1995-03-31
NO974410L (en) 1997-09-24
EP0861382A4 (en) 1998-09-02
CA2216706A1 (en) 1996-10-03
NO974410D0 (en) 1997-09-24

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NUG Patent has lapsed