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WO2009065381A1 - Roulement pour un élément formant un arbre - Google Patents

Roulement pour un élément formant un arbre Download PDF

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Publication number
WO2009065381A1
WO2009065381A1 PCT/DE2008/001867 DE2008001867W WO2009065381A1 WO 2009065381 A1 WO2009065381 A1 WO 2009065381A1 DE 2008001867 W DE2008001867 W DE 2008001867W WO 2009065381 A1 WO2009065381 A1 WO 2009065381A1
Authority
WO
WIPO (PCT)
Prior art keywords
rolling
contour
rolling bearing
rolling elements
raceway
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.)
Ceased
Application number
PCT/DE2008/001867
Other languages
German (de)
English (en)
Inventor
Tim LÖSCHNER
Rudolf Zeidlhack
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.)
IHO Holding GmbH and Co KG
Original Assignee
Schaeffler 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 KG filed Critical Schaeffler KG
Publication of WO2009065381A1 publication Critical patent/WO2009065381A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • F16C19/49—Bearings with both balls and rollers
    • F16C19/492—Bearings with both balls and rollers with two or more rows with angular contact
    • F16C19/495—Bearings with both balls and rollers with two or more rows with angular contact with two rows
    • 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
    • F16C19/49—Bearings with both balls and rollers
    • F16C19/492—Bearings with both balls and rollers with two or more rows with angular contact
    • F16C19/495—Bearings with both balls and rollers with two or more rows with angular contact with two rows
    • F16C19/497—Bearings with both balls and rollers with two or more rows with angular contact with two rows 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
    • F16C19/54—Systems consisting of a plurality of bearings with rolling friction
    • F16C19/541—Systems consisting of juxtaposed rolling bearings including at least one angular contact bearing
    • F16C19/542—Systems consisting of juxtaposed rolling bearings including at least one angular contact bearing with two rolling bearings with angular contact
    • 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
    • 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
    • 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

Definitions

  • the invention relates to a rolling bearing for a corrugated component with at least two rows of rolling elements, wherein a row of rolling elements is formed by spherical rolling elements and at least one other row of rolling elements by roller-shaped rolling elements.
  • Asymmetrical rolling bearings of the generic type are suitable for carrying high axial and radial loads, as they occur for example in the storage of a rotor of wind turbines.
  • the rotor of a wind turbine generally supports itself via a shaft in the rotor bearing formed by generic slewing bearings.
  • the achievement of the desired output or generator side speed is da- achieved over a corresponding gear.
  • the bearing of the rotor shaft is usually done by a fixed-floating bearing with at least two spatially spaced rolling bearings.
  • the fixed bearing must be able to compensate for angular errors caused, for example, by misalignments and manufacturing inaccuracies.
  • a generic rolling bearing unit for the storage of a gear shaft of a wind turbine is known.
  • the bearing unit has a tapered roller bearing combined with a angular ball bearing.
  • the outer ring of the angular ball bearing is also formed by a bolted to the gearbox of the wind turbine housing part.
  • the housing part serves for movably receiving the outer ring of the angular contact ball bearing, whereby the axial adjustment required for the angular contact ball bearing takes place via a disk spring pressing against the outer ring.
  • the axial forces occurring in the main load case (generator operation, ie the rotor blades drive generator) are intercepted via the tapered roller bearing, while in the reverse load case (motor operation, the rotor blades are driven) with lower axial forces they are supported by the angular contact ball bearing.
  • a generic rolling bearing is also known, which is used for the storage of a pinion shaft in a transmission.
  • the rolling bearing has a first row of rolling elements with a spherical and a second row of rolling elements with cylindrical rolling elements and is suitable for receiving high axial and radial loads in a compact design.
  • the invention is therefore based on the object, a generic rolling bearing to develop such that angular errors can be compensated by the bearing reliable.
  • the invention is based on the finding that angular errors, ie alignment deviations between the longitudinal axis of the shaft to be supported and the longitudinal axis of the roller bearing, can be reliably compensated by suitable design of the roller bearing raceways.
  • the invention is therefore according to the features of the main claim of a rolling bearing for a corrugated component having at least two rows of rolling elements, wherein a row of rolling elements by spherical Wälz- body and at least one other row of rolling elements is formed by roller-shaped rolling elements.
  • the roller-shaped rolling elements are barrel-shaped, and that the at least two rolling element rows roll on at least two raceways, which complement each other in the radial bearing section to form a track contour, wherein the track contour is both rectilinear sections as well as curved sections, each having a substantially unidirectional curvature, wherein the rectilinear portions are in the region of the said career contour complementary, directly or indirectly adjacent tracks.
  • the rolling bearing according to the invention is able to compensate angular errors reliably.
  • a compact design and good mountability is given, the bearing can be mounted without play to slightly biased.
  • a bearing row serves to absorb the axial forces in the main load direction. This allows an op- Timely distribution of the rolling element rows, since the opposite to the main load direction oversized bearing row made smaller (space reduction) or even larger load capacity can be achieved with the same size.
  • the rolling bearing according to the invention have the same outer dimensions such as a standard spherical roller bearings.
  • the resulting raceway contour at least partially corresponds approximately to the radius of curvature of the spherical rolling elements and at least partially the radius of curvature of the barrel-shaped rolling elements.
  • the resulting raceway contour is formed by the raceways of two outer rings of the rolling bearing.
  • the resulting raceway contour is formed by the raceways of two inner rings.
  • a rolling bearing designed in accordance with the variants mentioned can basically have two inner rings and two outer rings, or one inner ring and two outer rings, or two inner rings and one outer ring.
  • the bearing rigidity is increased and tolerances are reduced, and on the other hand, a good mountability is ensured.
  • the inner ring or the outer ring of the rolling bearing with the described, resulting raceway contour is integrally formed, or that on this one-piece inner ring or on the one-piece outer ring to the resulting career contour opposite contour is trained.
  • both between the inner rings and between the outer rings further machine elements, such as spacers and / or spring elements may be installed, with which a needs-based adjustment of the rolling bearing is optimally possible.
  • At least one spacer may be provided between said inner rings and / or outer rings. Due to this structure, the bearing clearance can be adjusted without an adaptation or grinding to measure the bearing rings is necessary.
  • a bias of the bearing can be achieved most simply and advantageously but also by the fact that between the inner rings or outer rings at least one spring element, preferably in the manner of a plate spring, is installed in the rolling bearing.
  • a roller bearing with at least one rolling bearing according to the invention can be made compact, carry large loads and at the same time compensate for angular errors to a certain extent.
  • raceway contour resulting from the raceways ideally in radial section has a substantially continuous, continuous course without appreciable edges or heels, wherein the rectilinear sections are approximately radially flush with each other go over and run approximately parallel to the axis of rotation of the bearing.
  • Figure 1 shows a first embodiment of an inventively designed roller bearing
  • FIG. 2 shows the roller bearing according to FIG. 1 with an angular offset of the outer rings
  • FIG. 3 shows an inventively embodied roller bearing according to a second embodiment
  • Figure 4 shows a third embodiment of an inventively designed roller bearing
  • FIG. 5 shows a fourth embodiment of a rolling bearing according to the invention. Detailed description of the drawings
  • the rolling bearing 1 according to FIG. 1 has two outer rings 4, 5 as well as two inner rings 6, 7, between which ball-shaped rolling elements 20 and in a second rolling-element row 3 barrel-shaped rolling elements 30 in raceways of FIGS Bearing rings are arranged rollable.
  • the rolling elements 20, 30 at a distance holding rolling elements cages are not shown.
  • the spherical rolling elements 20 have a radius of curvature Rk and the barrel-shaped rolling elements 30 have a radius of curvature Rt.
  • the inner ring 6 for the spherical rolling elements 20 has a raceway designated Li1 and the inner ring 7 for the barrel-shaped rolling elements 30 has a raceway designated Li2.
  • the raceway Li1 is divided into a rectilinear portion Lh0 and a radially inwardly curved portion Li20, the curved portion Li20 axially inwardly opening into a radial projection 60 of the inner ring 6.
  • the other radially inner raceway Li2 is in contrast not divided into sections and has a radially inwardly curved course, which also opens axially inward, in the transition region to the adjacent inner ring 6, in a radial projection 70 of the second inner ring 7.
  • the outer ring 4 for the spherical rolling elements 20 has a track La1 and the outer ring 5 for the barrel-shaped rolling elements 30 has a track La2.
  • the raceway La1 is divided into a radially outward curved portion La20 and a straight line portion La10
  • the raceway La2 is also divided into a straight line portion La30 and a radially outward curved portion La40.
  • the curved portion La20 has a radius of curvature approximately corresponding to the radius of curvature Rk of the spherical rolling element 20, and extends approximately over a quarter circle of the circumference of one of the spherical rolling elements 20.
  • This curved section La20 enters into said rectilinear portion LaIO, to the radially flush of the straight section La30 of the track La2 of the second outer ring 5 connects, the two rectilinear sections LaIO and La30 are aligned approximately parallel to the axis of rotation of the rolling bearing 1 and formed of unequal length.
  • the rectilinear section La30 in turn merges into the curved section La40, which (La40) has a radius of curvature which corresponds approximately to the radius of curvature Rt of one of the barrel-shaped rolling elements 30.
  • raceways La1 and La2 of the axially adjacent outer rings 4, 5 complement each other to form a raceway contour which includes both rectilinear sections La10, La30 and curved sections La20, La40 with a substantially radial direction (FIG. in this exemplary embodiment, radially outward) curvature, wherein the rectilinear sections La10, La30 lie in the region of the raceways La1 and La2 that are complementary to the said track contour and are directly approximately radially flush with each other.
  • the rolling elements 20 and 30 roll under such a pressure angle Dk or Dt in their associated tracks La1, Li1 and La2, Li2 from that the rolling bearing 1 is one in X-arrangement of the rows of rolling elements.
  • FIG. 2 shows schematically how the rolling bearing 1 can compensate for angular errors to a certain extent.
  • the starting position of the outer rings 4, 5 is indicated by dashed lines and, in a solid line, a possible deviating position of the outer rings 4 and 5, which corresponds to an angular play ⁇ .
  • This is accompanied by an axial displacement of the axial outer side 50 of the outer rings 4, 5.
  • the deviation of the outer rings 4, 5 in the other direction can be made and the adjustability of the angular play ⁇ by a suitable choice Oscillation (quotient between raceway radius and Wälz stresses- diameter) and the pressure angle can be influenced.
  • FIG. 3 shows in construction an alternative rolling bearing 1 'according to the invention.
  • a common, so one-piece inner ring 8 is provided with tracks LiV and Li2 '.
  • the spacer 9 ' By means of a suitable choice of the spacer 9 ', the bearing clearance can be adjusted without any need for adaptation, that is, for example, grinding to a degree of the outer rings 4', 5 '.
  • FIG. 4 shows a further embodiment of a roller bearing 1 "according to the invention, which, in contrast to the exemplary embodiment shown in FIG. 3, is in principle a radial reversal of inner and outer ring inside two inner rings 6 "and 7" with tracks LM “and Li2" are arranged, which in turn form a track contour Li1 "+ Li2" described in more detail in Figure 1, wherein the curvature of the track contour shows radially inward
  • a spacer 9 to the bearing adjustment available.
  • FIG. 5 shows an antifriction bearing V "according to the invention, showing two inner rings 6"'and7'"axially spaced by a spacer disk 9 '", which in turn defines a raceway defined by the two raceways LiV “and Li2"' Contour LiV "+ Li2 '” exhibit.
  • two outer rings 4 '"and 5'" are present, between which a spring element in the form of a plate spring 11 is arranged to produce an axial biasing force Fv.
  • the inner lateral surface of the spacer disc 9 '"does not interrupt the geometric course of the track contour LiV" + Li2'".

Landscapes

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

Abstract

L'invention concerne un roulement (1) pour un élément formant un arbre, comprenant au moins deux rangées de corps roulants (2, 3), une rangée de corps roulants (2) étant formée de corps sphériques (20) et au moins une autre rangée de corps roulants (3) étant formé de corps cylindriques (30). Selon l'invention, les corps roulants cylindriques (30) présentent une forme bombée, et les au moins deux rangées de corps roulants (2, 3) roulent dans au moins deux chemin de roulement (La1, La2; La1', La2'; Li1',Li2'; LiI'', Li2'') qui, lorsque le roulement est vu en section radiale, se complètent pour former un contour de chemins de roulement (La1+La2; La1'+La2'; Li1'+Li2'; Li1''+Li2''), le contour de chemins de roulement (La1+La2; La1'+La2'; Li1'+Li2'; Li1''+Li2'') comportant à la fois des sections droites (La10, La30) et des sections courbes (La20, La40) qui présentent chacune une courbure orientée sensiblement dans une direction, et les sections droites (La10, La30) se situant dans la zone dans laquelle les chemins de roulement se complétant pour former ledit contour de chemins de roulement (La1+La2; La1'+La2'; Li1'+Li2'; Li1''+Li2'') sont directement ou indirectement adjacents (La1, La2; La1', La2'; Li1', Li2'; Li1'',Li2'').
PCT/DE2008/001867 2007-11-20 2008-11-12 Roulement pour un élément formant un arbre Ceased WO2009065381A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007055362A DE102007055362A1 (de) 2007-11-20 2007-11-20 Wälzlager für ein wellenförmiges Bauteil
DE102007055362.7 2007-11-20

Publications (1)

Publication Number Publication Date
WO2009065381A1 true WO2009065381A1 (fr) 2009-05-28

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2008/001867 Ceased WO2009065381A1 (fr) 2007-11-20 2008-11-12 Roulement pour un élément formant un arbre

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DE (1) DE102007055362A1 (fr)
WO (1) WO2009065381A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20170343129A1 (en) * 2016-05-25 2017-11-30 Aktiebolaget Skf Operator assembly and valve equipped with such assembly
CN113757263A (zh) * 2021-08-13 2021-12-07 太原重工股份有限公司 风力发电机组的主轴轴承座
CN115681326A (zh) * 2022-10-27 2023-02-03 人本股份有限公司 一种高承载球柱混合轴承

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013215554B3 (de) * 2013-08-07 2014-11-27 Aktiebolaget Skf Lageranordnung
DE102018100411A1 (de) * 2018-01-10 2019-07-11 Schaeffler Technologies AG & Co. KG Abgedichtetes Schräg-Tonnenrollenlager

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB390067A (en) * 1932-09-20 1933-03-30 Joseph Kallai Improvements relating to combined ball and roller bearings
GB1011073A (en) * 1960-12-29 1965-11-24 Rothe Erde Eisenwerk Improvements in open-centre ball or roller bearings with radially subdivided rings
DE8803970U1 (de) * 1988-03-24 1988-05-26 Maschinenfabrik Joseph Eich KG u. Partner GmbH, 4320 Hattingen Radial-Pendelwälzlager
DE19916580A1 (de) * 1998-04-20 1999-10-21 Valmet Corp Lagerelement

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1580268A (en) 1976-12-01 1980-11-26 Sfk Nova Ab Apparatus comprising a shaft supported for rotation by a double row rolling bearing and a gear wheel mounted on the shaft
ATE411478T1 (de) 2004-05-07 2008-10-15 Timken Co Festlageranordnung für windturbinengetriebewelle

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB390067A (en) * 1932-09-20 1933-03-30 Joseph Kallai Improvements relating to combined ball and roller bearings
GB1011073A (en) * 1960-12-29 1965-11-24 Rothe Erde Eisenwerk Improvements in open-centre ball or roller bearings with radially subdivided rings
DE8803970U1 (de) * 1988-03-24 1988-05-26 Maschinenfabrik Joseph Eich KG u. Partner GmbH, 4320 Hattingen Radial-Pendelwälzlager
DE19916580A1 (de) * 1998-04-20 1999-10-21 Valmet Corp Lagerelement

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20170343129A1 (en) * 2016-05-25 2017-11-30 Aktiebolaget Skf Operator assembly and valve equipped with such assembly
US10550955B2 (en) * 2016-05-25 2020-02-04 Aktiebolaget Skf Operator assembly and valve equipped with such assembly
CN113757263A (zh) * 2021-08-13 2021-12-07 太原重工股份有限公司 风力发电机组的主轴轴承座
CN115681326A (zh) * 2022-10-27 2023-02-03 人本股份有限公司 一种高承载球柱混合轴承

Also Published As

Publication number Publication date
DE102007055362A1 (de) 2009-05-28

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