WO2010072197A1 - Cage à segments - Google Patents

Cage à segments Download PDF

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Publication number
WO2010072197A1
WO2010072197A1 PCT/DE2009/001755 DE2009001755W WO2010072197A1 WO 2010072197 A1 WO2010072197 A1 WO 2010072197A1 DE 2009001755 W DE2009001755 W DE 2009001755W WO 2010072197 A1 WO2010072197 A1 WO 2010072197A1
Authority
WO
WIPO (PCT)
Prior art keywords
cage
rolling bearing
segments
segment
cage segments
Prior art date
Application number
PCT/DE2009/001755
Other languages
German (de)
English (en)
Inventor
Rudolf Zeidlhack
Original Assignee
Schaeffler Technologies Gmbh & 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 Gmbh & Co. Kg filed Critical Schaeffler Technologies Gmbh & Co. Kg
Publication of WO2010072197A1 publication Critical patent/WO2010072197A1/fr

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
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/46—Cages for rollers or needles
    • F16C33/50—Cages for rollers or needles formed of interconnected members, e.g. chains
    • F16C33/502—Cages for rollers or needles formed of interconnected members, e.g. chains formed of arcuate segments retaining one or more rollers or needles
    • 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
    • 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
    • F16C2208/00—Plastics; Synthetic resins, e.g. rubbers
    • F16C2208/20—Thermoplastic resins
    • F16C2208/36—Polyarylene ether ketones [PAEK], e.g. PEK, PEEK
    • 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
    • F16C2226/00—Joining parts; Fastening; Assembling or mounting parts
    • F16C2226/50—Positive connections
    • F16C2226/70—Positive connections with complementary interlocking parts
    • F16C2226/74—Positive connections with complementary interlocking parts with snap-fit, e.g. by clips
    • 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
    • F16C2240/00—Specified values or numerical ranges of parameters; Relations between them
    • F16C2240/40—Linear dimensions, e.g. length, radius, thickness, gap
    • F16C2240/46—Gap sizes or clearances
    • 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
    • F16C2240/00—Specified values or numerical ranges of parameters; Relations between them
    • F16C2240/40—Linear dimensions, e.g. length, radius, thickness, gap
    • F16C2240/70—Diameters; Radii
    • 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 cage, comprising a plurality of cage segments each having two substantially opposite contact surfaces for contacting adjacent cage segments.
  • Such rolling bearing cages are used, for example, in so-called large rolling bearings with a pitch circle diameter of more than 500 mm.
  • all storage types e.g. also tapered roller bearings.
  • Cages for rolling bearings are widely known and serve to provide cage pockets in which rolling elements are held and guided. In the operation of such a rolling bearing, however, it may come to a swelling and / or thermal expansion of the material from which the cage segments are made. This can lead to strong tension in the cage, because Usually the material of the cage or the cage segments significantly more thermally expands than the rolling bearing usually made of steel. The mechanical stresses can lead to an increase in friction, jamming or even breakage of the cage.
  • DE 102 46 825 A1 it is proposed to form a cage of several cage segments, which are not connected d. H. are loosely installed and which are dimensioned so that when a juxtaposition between the adjacent end faces of a last and a first cage segment remains a gap to accommodate a swelling and / or temperature-induced expansion, so that mechanical stresses are avoided. This results in a total final.
  • the total end play should amount to between 0.15% and 1% of the circumference of a circle that runs centrally through the cage segments arranged next to each other.
  • the overall endgame should not exceed the predetermined value range, since otherwise an unacceptable succession of adjacent cage segments should arise.
  • a disadvantage of the range of values for the overall endgame proposed in DE 102 46 825 A1 is that due to the maximum value which is intended to limit the juxtaposition of adjacent cage segments, a source-related and / or temperature-induced expansion which may occur during operation will continue to become one Can cause jamming of the cage.
  • the present invention has for its object to provide a rolling bearing cage of the type mentioned above, wherein the Wälzla- gerhimfig prevents jamming of individual cage segments in all occurring during operation source and / or temperature-related expansions. Summary of the invention
  • a generic rolling bearing cage is characterized in that, when the cage segments are arranged in a manner similar to the cage segments in a roller bearing, one or more gaps arise between the contact surfaces of the cage segments, each gap having a smallest percentage gap width, the smallest value the distance of two contact surfaces adjacent to the gap on a circle arranged concentrically to the rolling bearing cage, based on the circumference of this circle, and wherein the sum of all percentage gap widths at room temperature is greater than 1.0%.
  • the sum of all percentage gap widths of the percentage gap width of this single gap corresponds. If linked cage segments as in DE 10 2006 022 951 A1 present, which are arranged at a juxtaposition of the cage segments in a manner such as the cage segments in a rolling bearing, not a single, but a plurality of columns form, the sum of all percentage gap widths is formed by the percentage gap width of all gaps.
  • the percentage gap width is determined at room temperature, ie at 20 0 C.
  • the inventive value of the sum of all gap widths ensures that the rolling bearing cage operating temperatures up to 180 0 C, ie a temperature difference between room temperature and maximum operating temperature of 160 0 C. allows.
  • the sum of all percentage gap widths is greater than 1.1%, preferably greater than 1.2%, more preferably equal to 1.25%, it is ensured that an operating temperature of 180 ° C. is enabled, at which temperature, sufficient circumferential clearance still remains between the cage segments.
  • an operating temperature of 180 ° C. is enabled, at which temperature, sufficient circumferential clearance still remains between the cage segments.
  • a value of the sum of the percentage gap width of 1, 2% at room temperature is still a peripheral match at 180 0 C of about 0.7%, ie about 44 mm before. This means that even at maximum operating temperature, there is still a remaining clearance of an average of approximately 2 mm per gap for a cage with 22 cage segments, which ensures operation without jamming the cage segments.
  • the value of the sum of all percentage gap widths is less than 5%, preferably less than 4%, more preferably less than 3%. These values allow sufficient circumferential clearance up to the necessary operating temperatures. In principle, the value of the sum of all percentage gap widths limits only given by the required load capacity of the bearing or the necessary width of webs to limit Wälz stressestaschenaschen.
  • one contact surface corresponds to one each Part of an end face of the cage segment.
  • the contact surfaces can have any shapes, for example flat or curved.
  • Plane adjacent contact surfaces are preferably perpendicular to a circle arranged concentrically to the cage, so that in the case of contacting these adjacent contact surfaces, a contact over the entire contact surfaces takes place. If the contact surfaces comprise only a part of an end face of the corresponding cage segment, the contact surface can be formed by two or more partial surfaces.
  • At least one cage segment has a coupling unit, which is designed to connect the cage segment at the front end with a further cage segment.
  • Adjacent cage segments can thus be connected to one another in such a way that the circumferential play between the cage segments can not concentrate on a single gap, but is distributed over a plurality of gaps.
  • the individual segments can now see in temperature increases due to the bias of the rolling elements between the rolling bearing raceways often not extend circumferentially, although in principle in the single gap sufficient circumferential clearance is present.
  • the coupling units prevent this problem.
  • the coupling unit comprises a frictional connection.
  • a frictional connection represents any connection which generates friction during a relative movement, in particular during a circumferential movement, of the cage segments interconnected in this way. This friction reduces the corresponding relative movement, whereby ultimately the succession of adjacent cage segments is reduced or can be completely prevented in accordance with large selected friction during operation.
  • This solution is compared to the known from DE 102 46 825 A1 solution for reducing the Aufein- ander vols, namely the reduction of the circumferential clearance, to be preferred, since no negative effects on the maximum possible source and temperature-induced expansions of the cage segments result.
  • a frictional connection can be achieved, for example, by providing coupling webs as an extension of the circumferential webs, wherein the coupling webs have latching recesses which press against a side surface of the adjacent cage segment, ie cause friction during relative movement of the two cage segments.
  • At least one cage segment has radially outwardly and / or radially inwardly projecting guide elements for supporting on a roller bearing raceway.
  • the cage segment is thus withdrawn radially in the remaining areas relative to the rolling bearing tracks and is guided in a controlled manner over the guide element (s).
  • the guide elements can be formed by guide knobs, skids, etc.
  • radially inwardly directed guide knobs and radially outwardly directed guide webs which are designed as runners in the circumferential direction, are provided.
  • At least one cage segment has one or more pockets for receiving rolling elements.
  • the cage segments are made of plastic, in particular polyether ether ketone (PEEK).
  • PEEK polyether ether ketone
  • Thermoplastics are also generally possible, in particular with a GlasVKohle- / Aramidverstärkung.
  • the cage segments are designed to receive tapered rollers.
  • the invention is further directed to a rolling bearing with a cage of the type described above.
  • rolling elements are guided through the cage segments.
  • the rolling bearing may further comprise an outer and / or inner ring.
  • the rolling bearing on a bias.
  • the circumferential displacement of the rolling elements to each other and thus the circumferential displacement of the cage segments is reduced to each other.
  • the collision of adjacent cage segments is reduced.
  • Hg. 1 shows an embodiment of a cage segment according to the invention of a cage
  • FIG. 2 shows a detailed representation of two interlocking cage segments according to FIG. 1.
  • FIGS. 1 and 2 show a perspective view of a cage segment and a detailed representation of two interlocking cage segments.
  • a rolling bearing comprising a plurality of such cage segments, for example, can be used to support a rotor of a wind turbine.
  • the cage segment 1 has an inner Um- Fangssteg 2 and an outer peripheral ridge 3.
  • the inner circumferential ridge 2 here has a smaller radius of curvature than the outer circumferential ridge 3.
  • the rolling elements to be introduced here have a conical shape.
  • the guide elements 6 also serve as support elements in order to support the cage, for example in the case of a temperature-induced expansion, with respect to the raceway of an outer ring.
  • an unrepresented radial projection is provided in each case, which supports the cage segment 1, if necessary, on a (not shown) running surface of the inner ring.
  • the outer circumference formed by the ends of the guide elements 6 is less than the circumference of the inner ring raceway (not shown) to allow for small dimensions of the cage.
  • the illustrated cage segment 1 has four pockets 5, which are formed by five connecting webs 4.
  • the two outer connecting webs simultaneously form end faces 9 of the cage segment 1, which in the assembled state end faces or end faces of further cage segments are opposite.
  • the outer connecting webs since they each adjoin only one pocket, only two guide elements 6, around rolling elements in the pocket of the respective cage segment respectively.
  • the cage segment 1 has four pockets for rolling elements in the exemplary embodiment shown, but it is also possible for more or fewer pockets and preferably pockets for 2 to 10 rolling elements to be provided.
  • two coupling webs 10 are provided, which constitute an extension of the circumferential webs 2, 3.
  • the coupling webs 10 have latching recesses 19 into which latching projections 18 of a further cage segment can engage.
  • the latching projections 18 protrude in the longitudinal direction L of the cage segment in each case to the outside.
  • Fig. 2 shows a detailed representation of two interlocking cage segments. It can be seen that the latching projection 18 within the latching recess 19 has a certain play in the circumferential direction of the cage segment in order, as mentioned above, to be able to absorb the thermally induced expansions.
  • the geometries of the coupling webs 10, latching recesses 19 and the latching projections 18 are preferably adapted so that the latching recesses 19 and the latching projections 18 can be slidably received. These geometries are preferably matched to one another in such a way that in the latched, ie nested state, there is a clearance fit which enables the cage segments 1 to be displaced relative to one another in the circumferential direction of the cage by a certain distance.
  • the clearance fit is dimensioned such that the source and temperature expansions occurring during operation of the rolling bearing each Caged segment 1 are added. According to the invention, the clearance fit is dimensioned such that a clearance of greater than 1% of the circumferential length of the cage segment 1 exists.
  • the total play between all cage segments in the circumferential direction between 1, 1% and 1, 3% of the length of all cage segments in the circumferential direction.
  • the coupling webs 10 may be configured such that they press laterally on a side wall 20 of the adjacent cage segment under bias. This acts with a circumferential movement of the adjacent cage segments as damping or brake. As a result, the negative effects that an increase in the game between adjacent cage segments brings with it, significantly reduced or completely eliminated. In particular, this reduces the hitherto formed noise generation by the abutting of the cage segments.
  • the cage segment 1 is preferably formed from a thermoplastic material with glass / carbon / aramid fiber reinforcement.
  • a base material for example, polyether ether ketone having a fiber content between 10 and 50 percent by weight (preferably 15-25 percent by weight) can be provided.
  • Other additives such as toughening modifiers and aging inhibitors may also be provided in the material of the cage segment 1.
  • the cage or the segments formed by the cage segments 1 can be embodied in different ways with respect to the guidance of the rolling elements, ie essentially in any combination of inner ring bord entry,actedringbord Entry, inner ring raceway guide, outer ring raceway guide and / or WälzConsequently exit.

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

Abstract

L'invention concerne une cage de roulement comprenant plusieurs segments de cage qui présentent respectivement deux surfaces de contact pratiquement opposées pour la mise en contact de segments de cage voisins. La cage de roulement selon l'invention est caractérisée en ce que, lors de la juxtaposition des segments de cage à la manière dont ils sont placés dans un palier à roulement, un ou plusieurs interstices se forment entre les surfaces de contact des segments de cage. Chaque interstice a une largeur minimale en pourcentage qui correspond à la plus petite valeur de la distance entre deux surfaces de contact adjacentes à l'interstice sur un cercle concentrique à la cage de roulement par rapport à la circonférence de ce cercle, la somme de toutes les largeurs d'interstice en pourcentage étant supérieure à 1,0 % à température ambiante.
PCT/DE2009/001755 2008-12-24 2009-12-11 Cage à segments WO2010072197A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008062913.8 2008-12-24
DE102008062913A DE102008062913A1 (de) 2008-12-24 2008-12-24 Segmentkäfig

Publications (1)

Publication Number Publication Date
WO2010072197A1 true WO2010072197A1 (fr) 2010-07-01

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2009/001755 WO2010072197A1 (fr) 2008-12-24 2009-12-11 Cage à segments

Country Status (2)

Country Link
DE (1) DE102008062913A1 (fr)
WO (1) WO2010072197A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105164438A (zh) * 2013-04-11 2015-12-16 斯凯孚公司 具有设置在多个保持架部段中的滚动体的滚动轴承
DE102019105473A1 (de) * 2019-03-04 2020-09-10 Schaeffler Technologies AG & Co. KG Käfigsegment eines Wälzlagers

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013242018A (ja) * 2012-05-22 2013-12-05 Jtekt Corp 転がり軸受用の分割保持器及びそれを用いた転がり軸受
DE102015206533A1 (de) 2015-04-13 2016-10-13 Schaeffler Technologies AG & Co. KG Käfigsegment eines Käfigs eines Wälzlagers und Käfig eines Wälzlagers

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0016880A1 (fr) * 1979-03-28 1980-10-15 The Torrington Company Perfectionnements aux roulements
DE10246825A1 (de) 2002-10-08 2004-04-22 Aktiebolaget Skf Käfig für ein Wälzlager
DE102006022951A1 (de) 2006-05-17 2007-11-22 Schaeffler Kg Käfigsegment für einen Käfig eines Wälzlagers
DE102007048655A1 (de) * 2007-10-10 2008-02-07 Schaeffler Kg Käfigsegment eines Kunststoffkäfigs sowie Wälzlager mit dem Kunststoffkäfig
EP1921333A1 (fr) * 2005-09-01 2008-05-14 Ntn Corporation Palier à rouleaux

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0016880A1 (fr) * 1979-03-28 1980-10-15 The Torrington Company Perfectionnements aux roulements
DE10246825A1 (de) 2002-10-08 2004-04-22 Aktiebolaget Skf Käfig für ein Wälzlager
EP1921333A1 (fr) * 2005-09-01 2008-05-14 Ntn Corporation Palier à rouleaux
DE102006022951A1 (de) 2006-05-17 2007-11-22 Schaeffler Kg Käfigsegment für einen Käfig eines Wälzlagers
DE102007048655A1 (de) * 2007-10-10 2008-02-07 Schaeffler Kg Käfigsegment eines Kunststoffkäfigs sowie Wälzlager mit dem Kunststoffkäfig

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105164438A (zh) * 2013-04-11 2015-12-16 斯凯孚公司 具有设置在多个保持架部段中的滚动体的滚动轴承
CN105164438B (zh) * 2013-04-11 2018-08-31 斯凯孚公司 具有设置在多个保持架部段中的滚动体的滚动轴承
DE102019105473A1 (de) * 2019-03-04 2020-09-10 Schaeffler Technologies AG & Co. KG Käfigsegment eines Wälzlagers
WO2020177802A1 (fr) 2019-03-04 2020-09-10 Schaeffler Technologies AG & Co. KG Segment de cage d'un palier à roulement
US11698103B2 (en) 2019-03-04 2023-07-11 Schaeffler Technologies AG & Co. KG Cage segment of a rolling bearing

Also Published As

Publication number Publication date
DE102008062913A1 (de) 2010-07-01

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