WO2013135495A1 - Palier à roulement présentant une unité à bague de roulement divisée - Google Patents

Palier à roulement présentant une unité à bague de roulement divisée Download PDF

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Publication number
WO2013135495A1
WO2013135495A1 PCT/EP2013/054131 EP2013054131W WO2013135495A1 WO 2013135495 A1 WO2013135495 A1 WO 2013135495A1 EP 2013054131 W EP2013054131 W EP 2013054131W WO 2013135495 A1 WO2013135495 A1 WO 2013135495A1
Authority
WO
WIPO (PCT)
Prior art keywords
bearing ring
bearing
centering projection
centering
rolling bearing
Prior art date
Application number
PCT/EP2013/054131
Other languages
German (de)
English (en)
Inventor
Horst Masuch
Yiping Shi
Original Assignee
Schaeffler Technologies AG & Co. KG
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 Schaeffler Technologies AG & Co. KG filed Critical Schaeffler Technologies AG & Co. KG
Publication of WO2013135495A1 publication Critical patent/WO2013135495A1/fr

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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
    • F16C19/22—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
    • F16C19/383—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 with tapered rollers, i.e. rollers having essentially the shape of a truncated cone
    • F16C19/385—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 with tapered rollers, i.e. rollers having essentially the shape of a truncated cone with two rows, i.e. double-row tapered roller bearings
    • F16C19/386—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 with tapered rollers, i.e. rollers having essentially the shape of a truncated cone with two rows, i.e. double-row tapered roller 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
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/58—Raceways; Race rings
    • F16C33/60—Raceways; Race rings divided or split, e.g. comprising two juxtaposed rings
    • 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
    • F16C2300/00—Application independent of particular apparatuses
    • F16C2300/10—Application independent of particular apparatuses related to size
    • F16C2300/14—Large applications, e.g. bearings having an inner diameter exceeding 500 mm
    • 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
    • F16C2360/00—Engines or pumps
    • F16C2360/31—Wind motors

Definitions

  • the invention relates to a roller bearing comprising a ring axially divided into a first and a second bearing ring bearing unit, and a number of rolling elements.
  • the first bearing ring has an axial centering projection for centering on the second bearing ring.
  • the second bearing ring contains an axial receiving area in which the centering projection engages.
  • a rolling bearing is used in various technical applications to support relatively movable, in particular rotatable parts in machines and lead and absorb the external forces acting and transmit to a housing or the like.
  • the rotor shaft of a wind turbine is usually rotatably supported relative to the housing by means of a so-called two-point or three-point bearing with two or three separate bearing points.
  • the storage is often carried out as a one-point storage.
  • a roller bearing of the type described above is used in the embodiment as a double-row tapered roller bearing.
  • DE 10 2007 062 056 A1 discloses a multi-row roller bearing which comprises an axially divided outer ring consisting of at least two coaxial rings in order to harden the rings independently of one another.
  • the frontal surface of a ring has a cavity into which a connecting element of the surface facing this surface front surface of an adjacent ring engages. Between the connecting element and the complementary cavity there are radially two contact surfaces in the assembled state, in particular there is an interference fit.
  • the engagement of the connecting element of a Maisfiambae in an opposite cavity of the adjacent contact surface should allow a centering of the rings, as well as a transmission of force in the radial direction between these rings.
  • the present invention seeks to provide a roller bearing, which allows a simple and cost-effective production and assembly.
  • a rolling bearing comprises, in a known manner, a bearing ring unit axially divided into a first and a second bearing ring and a number of rolling elements.
  • the first bearing ring has an axial centering projection for centering on the second bearing ring.
  • the second bearing ring has a receiving area in which the centering projection engages.
  • the centering projection of a lateral surface of the first bearing ring and the receiving region of a lateral surface of the second bearing ring are integrally formed.
  • the invention is based on the idea of designing and dividing a split bearing ring unit of a roller bearing so that it can be manufactured relatively inexpensively and assembled simply and precisely in terms of assembly. Furthermore, the invention is based on the consideration that it significantly simplifies the assembly process when an axially split bearing ring unit can be attached directly to the housing without previously for the purpose of centering the bearing rings on a supporting shaft, in particular by relatively complicated shrinking to mount.
  • the invention provides, with a receiving area and engaging therein axial centering projection on the respective lateral surfaces of a first and a second bearing ring of a split bearing ring unit to provide two easy-to-manufacture elements by means of which the two bearing rings can be centered to each other.
  • the rolling bearing has an axis of rotation, and it may be a standard type, such as a self-aligning ball bearings, angular contact ball bearings, cylindrical roller bearings or tapered roller bearings, as well as a special design. In particular, it is a multi-row roller bearing. Accordingly, the rolling elements can be configured, for example, as a ball, cylinder or cone.
  • the axially split bearing ring unit may be both an outer ring, as well as an inner ring of a rolling bearing. In this case, the bearing ring unit can be divided into an identically sized first and second bearing ring, which each have the same inner and outer diameter, and the same axial length. In particular, however, the first and the second bearing ring can also have different axial lengths.
  • a lateral surface of a first bearing ring of the split bearing ring unit has a centering projection formed on it.
  • An outer surface of a second bearing ring of the split bearing ring unit is formed on a receiving area.
  • the centering projection and the mounting area extend in the axial direction.
  • the centering projection of the first bearing ring engages in the mounting state in the Aufiiahme Scheme of the second bearing ring.
  • the centering projection and the receiving area are dimensioned so that the first and the second bearing ring are centered relative to one another when the centering projection engages in the receiving area.
  • a positive, non-positive or cohesive connection can be present.
  • the centering projection may be integrally formed on the radially outer lateral surface. Accordingly, the Tariiahme Anlagen the outer circumferential surface of the second bearing ring may be formed.
  • the centering projection and the receiving area of the respective radially inner circumferential surface, or both of the respective outer and the respective inner circumferential surface are integrally formed.
  • the centering projection and the receiving area can be integrally formed on the respective lateral surface and, in particular, produced by machining the respective lateral surface, such as, for example, milling or turning.
  • the centering projection has been manufactured as a separate component and, for example, has been attached to the lateral surface of the first bearing ring via a welded connection.
  • Centering projection and receiving area may further be formed completely circumferentially the corresponding lateral surface.
  • the centering projection and the corresponding receiving area are formed only partially circumferentially at a certain portion of the respective lateral surface. It is also possible that more than one centering projection and associated receiving area are formed distributed over the circumference.
  • two diametrically arranged centering projections of the lateral surface of the first bearing ring, and two corresponding diametrically arranged receiving areas of the lateral surface of the second bearing ring may be formed.
  • three circumferentially equally spaced centering projections and the corresponding receiving areas of the respective lateral surface may be formed.
  • the embodiment according to the invention has the advantage of simple and cost-effective production.
  • the centering projection and the Aufhahme Bachelor can be made with known and simple machines and tools on the easily accessible machining surfaces.
  • Another advantage is the quick and easy installation of the rolling bearing.
  • first bearing ring and second bearing ring are arranged centered to each other.
  • the centering projection of the first bearing ring comes into abutment with the receiving region of the second bearing ring, the first bearing ring is arranged centered relative to the second bearing ring.
  • the assembly process can be optically easily controlled.
  • centering projection and receiving area are easily accessible due to their arrangement on the lateral surfaces, for example for assembly tools. In this way, the bearing rings of a split bearing ring unit can be accurately positioned in a simple and quick way.
  • the centering projection is radially free on one side in the receiving area.
  • the centering projection engages radially only to an area of the receiving area.
  • a radially further outward or further inward lying additional radial contact between centering projection and receiving area is thus not available.
  • the centering projection and the receiving area are easy to manufacture, since only the dimensions and tolerances with respect to this one radial contact must be maintained and coordinated with each other for their radial contact.
  • this facilitates the assembly, since the merger of the first bearing ring and the second bearing ring must be considered radially only one contact.
  • the axial cross section of the centering projection decreases in the direction of the receiving area.
  • the axial cross section of the centering projection increases along the receiving region of the second bearing ring toward the annular body of the first bearing ring.
  • the axial cross section increases continuously, so that the cross-sectional profile of the centering projection is substantially nose-shaped. Due to the increase in cross-section also increases the moment of resistance of the centering of the introduction of force in the receiving area axially in the direction of annular body of the first bearing ring.
  • the centering projection comprises a first radial contact surface and an axial end surface, wherein a concave material recess is formed along a boundary line between the first radial contact surface and the axial end surface.
  • the first radial contact surface is that surface of the centering projection which extends axially along the receiving region of the second bearing ring and which is radially in contact with the receiving region.
  • the axial end face adjoins the first radial contact surface and extends in the radial direction.
  • the centering projection is axially released in the Aufhahme Anlagen. This means that between the receiving area and the intervening center Ervorsprung axially no contact exists. This prevents possible axial forces, which result, for example, from a screw connection between the first bearing ring and the second bearing ring, act on the centering projection.
  • the receiving area is limited in a preferred embodiment of a second radial Kunststofffikiee and the second radial Kunststofffiambae has an inclined against the axial direction Vorzentri proceedingssabexcellent.
  • the second radial contact surface is that surface of the receiving region which extends in the axial direction and which is radially in contact with the centering projection.
  • the pre-centering portion is inclined away from the centering projection against the axial direction.
  • the pre-centering section is configured at the axial end of the receiving region, which adjoins the first bearing ring.
  • the pre-centering portion has only a small axial length in relation to the entire axial length of the receiving area.
  • the receiving area is advantageously limited by a collar, which is inclined in the direction of the receiving area and at the same time forms a ganfiambae for the rolling elements.
  • the bearing ring unit is a split inner ring.
  • the rolling bearing is designed as a double-row tapered roller bearing.
  • the rolling elements are designed here as a cone.
  • Double row tapered roller bearings can be loaded radially and axially.
  • the axially divided bearing ring unit can in this case be both an outer ring and an inner ring of the tapered roller bearing.
  • Fig. 1 is a schematic sectional view of an embodiment of a
  • Fig. 2 is a schematic sectional view of an embodiment of a
  • Fig. 3 is a schematic sectional view of an embodiment of a
  • a centering projection 1 is shown.
  • the centering projection 1 is integrally formed on the lateral surface of a first bearing ring 2 and extends in the axial direction.
  • the centering projection 1 comprises a first radial contact surface 3 and an axial end surface 4.
  • a concave material recess 5 is formed.
  • 2 shows an exemplary embodiment of a receiving region 10, which is formed on the lateral surface of a second bearing ring 11.
  • the Aufhahme Surrey has a second radial contact surface 12, at one axial end of which is formed an inclined against the axial direction Vorzentri ceremoniessabêt 13.
  • the receiving region 10 is also bounded by a collar 14 which is inclined in the direction of the Aufhahme Maschinens 10 and which forms a contact surface 15 for conical rolling elements (not shown). Along a boundary line between the second radial contact surface 12 and the collar 14, a concave material recess 16 is formed.
  • An embodiment of a rolling bearing 20 is shown in Fig. 3.
  • the rolling bearing 20 is formed as a double-row tapered roller bearing.
  • the tapered roller bearing consists essentially of an outer ring 21, a plurality of tapered rollers 22, and a split bearing ring unit 23, which forms the split inner ring of the tapered roller bearing.
  • the tapered rollers 22 roll on races of the outer ring 21 and the split bearing ring unit 23 and are held by cages 24 at a uniform distance and prevented from mutual contact.
  • the divided bearing ring unit 23 comprises a first bearing ring 2 and a second bearing ring 11.
  • the radially outer lateral surface of the first bearing ring 2 is formed with a centering projection 1.
  • the outer circumferential surface of the second bearing ring 11 is a Aufhahme Suite 10 is formed.
  • the centering projection 1 and the receiving area 10 are each integrally formed on the respective lateral surface and completely encircling.
  • the centering projection 1 of the first bearing ring 2 engages in the receiving area 10 of the second bearing ring 11.
  • the centering projection 1 is radially exposed in the receiving area 10 on one side.
  • a radial contact between the centering projection 1 and the receiving region 10 exists only between a first radial contact surface 3 of the centering projection 1 and a second radial contact surface 12 of the receiving region 10. Since only the dimensions and tolerances with respect to this one radial contact must be maintained for the radial contact of centering projection 1 and receiving area 10 during manufacture, they are relatively easy to manufacture. The assembly is facilitated because when merging the first bearing ring 2 and second bearing ring 11 radially only on this one contact must be paid attention.
  • the receiving region 10 is further bounded by a collar 14, which is inclined in the direction of the receiving region 10 and which forms a 6.3fiambae 15 for an end face of the tapered rollers 22.
  • a concave material recess 16 is formed.
  • the centering projection 1 is axially free in the receiving region 10, so that there is no axial contact between the receiving region 10 and the centering projection 1 engaging therein. This prevents axial forces acting on the centering projection 1.
  • the centering projection 1 is also designed so that the axial cross-section decreases continuously in the direction of the receiving area 10.
  • the moment of resistance of the centering projection 1 increases from the introduction of force in the receiving area 10 axially toward the annular body of the first bearing ring 2.
  • a concave material recess 5 is formed on the centering projection 1 along a boundary line between the first radial contact surface 3 and an axial end face 4. This advantageous notch shape reduces the stress peaks occurring along the boundary line and thus the risk of breakage in this area.
  • the centering projection 1 and the receiving area 10 are dimensioned such that the first bearing ring 2 and second bearing ring 11 are already centered relative to each other by the engagement of the centering projection 1 in the receiving area 11.
  • the first bearing ring 2 is centered to the second bearing ring 11 is arranged.
  • the Anformung of the centering projection 1 and the receiving area 10 on the respective lateral surfaces these are accessible, for example, a mounting tool and the
  • the assembly process can be visually checked easily.
  • a quick and easy installation of the rolling bearing 20 is possible.
  • a force transmission in the radial direction of the first bearing ring 2 in the second bearing ring 11 and vice versa is made possible by the intervention.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolling Contact Bearings (AREA)

Abstract

L'invention concerne un palier à roulement (20), qui comprend, de manière connue, une unité à bague de roulement (23) divisée axialement en une première bague de roulement (2) et une deuxième bague de roulement (11) ainsi qu'un certain nombre de corps de roulement (22). La première bague de roulement (2) présente une partie en saillie axiale de centrage (1) pour le centrage sur la deuxième bague de roulement (11). La deuxième bague de roulement (11) présente une zone de réception (10), dans laquelle s'agrippe la partie en saillie de centrage (1). Selon l'invention, une surface enveloppante de la première bague de roulement (2) est formée sur la partie en saillie de centrage (1) et une surface enveloppante de la deuxième bague de roulement (11) est formée sur la zone de réception (10).
PCT/EP2013/054131 2012-03-12 2013-03-01 Palier à roulement présentant une unité à bague de roulement divisée WO2013135495A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012203803.5 2012-03-12
DE102012203803A DE102012203803A1 (de) 2012-03-12 2012-03-12 Wälzlager mit geteilter Lagerringeinheit

Publications (1)

Publication Number Publication Date
WO2013135495A1 true WO2013135495A1 (fr) 2013-09-19

Family

ID=47891625

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2013/054131 WO2013135495A1 (fr) 2012-03-12 2013-03-01 Palier à roulement présentant une unité à bague de roulement divisée

Country Status (2)

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DE (1) DE102012203803A1 (fr)
WO (1) WO2013135495A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019206040A1 (de) * 2019-04-26 2020-10-29 Aktiebolaget Skf Wälzlager, insbesondere Wälzlager mit großem Durchmesser

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1750885A1 (de) * 1968-06-14 1971-04-29 Porsche Kg Mehrreihiges Waelzlager,insbesondere Kegelrollenlager
DE4142802A1 (de) * 1991-12-23 1993-07-01 Skf Gmbh Vierreihiges kegelrollenlager
DE19526167A1 (de) * 1994-07-19 1996-01-25 Ntn Toyo Bearing Co Ltd Achsritzellagerbaugruppe in Patronenform
DE102007013936A1 (de) * 2007-03-23 2008-09-25 Schaeffler Kg Zweireihiges Schräglager
DE102007062056A1 (de) 2007-12-21 2009-06-25 Schaeffler Kg Wälzlager mit geteiltem Außenring mit radialer Fixierung

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1750885A1 (de) * 1968-06-14 1971-04-29 Porsche Kg Mehrreihiges Waelzlager,insbesondere Kegelrollenlager
DE4142802A1 (de) * 1991-12-23 1993-07-01 Skf Gmbh Vierreihiges kegelrollenlager
DE19526167A1 (de) * 1994-07-19 1996-01-25 Ntn Toyo Bearing Co Ltd Achsritzellagerbaugruppe in Patronenform
DE102007013936A1 (de) * 2007-03-23 2008-09-25 Schaeffler Kg Zweireihiges Schräglager
DE102007062056A1 (de) 2007-12-21 2009-06-25 Schaeffler Kg Wälzlager mit geteiltem Außenring mit radialer Fixierung

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Publication number Publication date
DE102012203803A1 (de) 2013-09-12

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