EP0000703B1 - Selbsteinstellendes zweireihiges Axialrollenlager - Google Patents

Selbsteinstellendes zweireihiges Axialrollenlager Download PDF

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Publication number
EP0000703B1
EP0000703B1 EP78100340A EP78100340A EP0000703B1 EP 0000703 B1 EP0000703 B1 EP 0000703B1 EP 78100340 A EP78100340 A EP 78100340A EP 78100340 A EP78100340 A EP 78100340A EP 0000703 B1 EP0000703 B1 EP 0000703B1
Authority
EP
European Patent Office
Prior art keywords
rollers
roller
self
bearing
roller bearing
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
EP78100340A
Other languages
English (en)
French (fr)
Other versions
EP0000703A1 (de
Inventor
Leif Blomquist
Bo Göransson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SKF AB
Original Assignee
SKF AB
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 SKF AB filed Critical SKF AB
Publication of EP0000703A1 publication Critical patent/EP0000703A1/de
Application granted granted Critical
Publication of EP0000703B1 publication Critical patent/EP0000703B1/de
Expired legal-status Critical Current

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    • 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
    • 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
    • F16C19/38—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 two or more rows 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
    • F16C23/06—Ball or roller bearings
    • F16C23/08—Ball or roller bearings self-adjusting
    • F16C23/082—Ball or roller bearings self-adjusting by means of at least one substantially spherical surface
    • F16C23/086—Ball or roller bearings self-adjusting by means of at least one substantially spherical surface forming a track for rolling elements

Definitions

  • This invention relates to a self-aligning thrust roller bearing incorporating two relatively rotatable elements, each of which being provided with at least one coaxial race track and a number of rollers provided between and in engagement with the race tracks, the angle between the bearing axis and the roller axes exceeding 20°, the race tracks and the rollers being curved in axial section.
  • Spherical thrust roller bearings are earlier known. These bearings generally have one row of unsymmetrical rollers, one bearing ring with a spherical race track and one bearing ring with a roller guiding flange.
  • Rings having flanges are expensive to manufacture and bearings having such rings have a high starting friction. It is thus desirable to avoid the need of the flange.
  • a possible method for avoiding a flange is to use symmetrical rollers.
  • a roller is in this respect considered to be symmetrical if it can be divided in two congruent halves with a cross sectional plane half way between the ends of the roller.
  • Symmetrical rollers having such a large axial extension and being arranged with such a large angle between the roller axis and the bearing axis as the rollers appearing in spherical thrust bearings are, however, difficult to guide with a desired precision.
  • the sliding in the contact points between the roller and the race track will be large, which leads to power losses and a risk for bearing failure due to the generated friction heat.
  • the purpose of the present invention is to provide a bearing of the type defined in the preamble, wherein a good roller guiding is obtained without a flange on one of the rings and which has a low friction at start and during operation.
  • rollers of the bearing Due to the fact that all rollers of the bearing have the same revolution angular speed about the bearing axis only one cage for the rollers is needed, which saves space and cost.
  • a good roller guiding can easily be obtained by the rollers being arranged to contact each other adjacent the inner race ring or by means of a guiding ring at the outer race ring. Both roller rows are subjected to load when the bearing takes up axial load, which guarantees a good guiding of all rollers.
  • By using two rollers instead of one roller with a corresponding axial extension it is possible to halve the bearing friction losses, since the relative sliding between the roller and the race track, i.e. the relation between the sliding speed and the rolling speed, is about proportional to the length of the roller.
  • the bearing has two rings 1 and 2 each having C0 2 axial race tracks for a number of symmetrical rollers 3,4 provided between the rings, which rollers are arranged in double rows, and the rollers in both rows are preferably identical.
  • the roller rows are situated side by side and the axes 5, 6 of the rollers in each roller row are inclined in the same direction relative to the bearing axis 7.
  • the race track of the ring 2 has preferably a spherical surface, which means that the ring 1 and the set of rollers with the rollers 3, 4 and roller cage 8 can be freely tilted relative to the ring 2 without causing a too high contact pressure at the contact between the roller and the race track. If only a limited self- alignment is aimed at, it is possible to let the surface of the race track be non-spherical.
  • the load capacity of the bearing is of the same size as the load capacity of a one row bearing, the rollers of which are twice as long as the rollers 3 and 4 and has a corresponding contact angle.
  • the limited length of the rollers 3, 4 together with the fact that both roller rows are exposed to load means that the guiding of the rollers will not cause any great difficulties.
  • rollers of the two rows in a bearing according to the invention always have the same revolution angular speed relative to each other.
  • a single cage can thus be used for both roller rows without risking that the rollers of one row will influence the rollers of the other row through the cage.
  • the bearing will be more easy to'manufacture and to handle as it incorporates as few separate parts as possible.
  • the bearing can be provided with three or more rows of rollers if it is desired to produce an extra large load capacity and a low relative sliding.
  • the race tracks can also be arranged on more than two rings.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolling Contact Bearings (AREA)
  • Support Of The Bearing (AREA)

Claims (4)

1. Selbsteinstellendes Axial-Rollenlager, bestehend aus zwei relativ zueinander drehbaren Lagerscheiben, von denen jede mit mindestens einer koaxialen Laufbahn versehen ist, und aus einer Anzahl zwischen den Lagerscheiben angeordneter und mit den Laufbahnen in Berührung stehender Rollen, wobei die Winkel zwischen der Lagerachse und den Achsen der Rollen größer als 20° und die Laufbahnen und die Mantelflächen der Rollen im Axialschnitt gekrümmt sind, dadurch gekennzeichnet, daß die Rollen (3, 4) in zwei nebeneinander liegenden Reihen angeordnet sind, daß die Achsen (5, 6) der Rollen (3, 4) in der gleichen Richtung im Bezug auf die Lagerachse (7) geneigt sind, daß alle Rollen (3, 4) symmetrisch zu den Mittenebenen durch die entsprechenden Rollen (3, 4) sind un daß die beiden Lagerscheiben (1, 2) ohne einen festen Führungsflansch ausgebildet sind.
2. Selbsteinstellendes Axial-Rollenlager nach Anspruch 1, gekennzeichnet durch einen einzigen Käfig (8) für die (beiden Reihen von) Rollen (3, 4).
3. Selbsteinstellendes Axial-Rollenlager nach einem der Ansprüche 1 oder 2, gekennzeichnet durch einen losen zwischen den beiden Reihen von Rollen (3, 4) angeordneten Führungsring (10).
4. Selbsteinstellendes Axial-Rollenlager nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, daß die einander zugewandten Stirnseiten der Rollen (3, 4) beider Reihen in Berührung miteinander sind.
EP78100340A 1977-08-15 1978-07-10 Selbsteinstellendes zweireihiges Axialrollenlager Expired EP0000703B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE7709175A SE411064B (sv) 1977-08-15 1977-08-15 Tvaradigt sjelvinstellande axialrullager
SE7709175 1977-08-15

Publications (2)

Publication Number Publication Date
EP0000703A1 EP0000703A1 (de) 1979-02-21
EP0000703B1 true EP0000703B1 (de) 1981-02-04

Family

ID=20332003

Family Applications (1)

Application Number Title Priority Date Filing Date
EP78100340A Expired EP0000703B1 (de) 1977-08-15 1978-07-10 Selbsteinstellendes zweireihiges Axialrollenlager

Country Status (6)

Country Link
US (1) US4209210A (de)
EP (1) EP0000703B1 (de)
JP (1) JPS54112433A (de)
DE (1) DE2860391D1 (de)
IT (2) IT1111194B (de)
SE (1) SE411064B (de)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4513869A (en) * 1982-02-11 1985-04-30 Armco, Inc. Pedestal crane mounting system
ES2072026T3 (es) * 1991-02-04 1995-07-01 Pwb Praezis Werkzeug Bau Ag Aparato de ajuste previo para herramientas.
WO1992021889A1 (en) * 1991-06-05 1992-12-10 'tribos' Zaklad Naukowo Badawczy Single-row radial rolling bearing
DE19612589B4 (de) * 1996-03-29 2005-12-22 Skf Gmbh Lagerung
DE102006050940A1 (de) * 2006-10-28 2008-04-30 Schaeffler Kg Wälzlager, sowie unter Einschluss desselben verfertigte Radlagerung
CN105987073A (zh) * 2015-02-06 2016-10-05 舍弗勒技术股份两合公司 推力球轴承
CN114483769B (zh) * 2022-01-25 2023-11-14 中国铁建重工集团股份有限公司 一种具有高偏载承载能力的新型调心回转支承

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1208428A (en) * 1914-01-09 1916-12-12 Frank Whitney Roller bearing.
DE331454C (de) * 1919-02-27 1921-01-07 Skf Svenska Kullagerfab Ab Selbsteinstellendes Rollenlager
US1548821A (en) * 1920-09-23 1925-08-11 Wilhelm B Bronander Roller bearing
FR572167A (fr) * 1923-10-23 1924-06-02 Perfectionnements aux paliers à rouleaux
US1645345A (en) * 1926-12-09 1927-10-11 Okner Bernard Ball bearing
US1918677A (en) * 1931-09-11 1933-07-18 Wingquist Sven Gustaf Double-row roller bearing
US2622946A (en) * 1950-12-12 1952-12-23 Mckissick Products Retaining means for idler units
US3004809A (en) * 1957-12-19 1961-10-17 Skf Svenska Kullagerfab Ab Thrust roller bearings
JPS4529922Y1 (de) * 1966-08-27 1970-11-17
DE1813979B2 (de) * 1968-12-11 1973-11-08 The Torrington Co., Torrington, Conn. (V.St.A.) Zweireihiges Axialrollenlager
JPS5761933B2 (de) * 1972-07-07 1982-12-27 Esu Kee Efu Andeyusutoriaru Toreedeingu Ando Dev Co Bv

Also Published As

Publication number Publication date
IT7822259V0 (it) 1978-07-06
IT7825395A0 (it) 1978-07-06
US4209210A (en) 1980-06-24
EP0000703A1 (de) 1979-02-21
DE2860391D1 (en) 1981-03-19
SE411064B (sv) 1979-11-26
IT1111194B (it) 1986-01-13
JPS559571B2 (de) 1980-03-11
SE7709175L (sv) 1979-02-16
JPS54112433A (en) 1979-09-03

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