DE20306897U1 - Rolling bearing for wind power plant, for example, has segmented flange with run-on face which has stepped construction in circumferential direction, whereby all steps are orientated in same direction - Google Patents
Rolling bearing for wind power plant, for example, has segmented flange with run-on face which has stepped construction in circumferential direction, whereby all steps are orientated in same direction Download PDFInfo
- Publication number
- DE20306897U1 DE20306897U1 DE20306897U DE20306897U DE20306897U1 DE 20306897 U1 DE20306897 U1 DE 20306897U1 DE 20306897 U DE20306897 U DE 20306897U DE 20306897 U DE20306897 U DE 20306897U DE 20306897 U1 DE20306897 U1 DE 20306897U1
- Authority
- DE
- Germany
- Prior art keywords
- rolling
- rolling bearing
- bearing according
- steps
- circumferential direction
- 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 - Lifetime
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
- F16C19/22—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
- F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
- F16C35/04—Rigid support of bearing units; Housings, e.g. caps, covers in the case of ball or roller bearings
- F16C35/06—Mounting or dismounting of ball or roller bearings; Fixing them onto shaft or in housing
- F16C35/07—Fixing them on the shaft or housing with interposition of an element
- F16C35/073—Fixing them on the shaft or housing with interposition of an element between shaft and inner race ring
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
Abstract
Description
Die Erfindung betrifft ein Wälzlager mit wenigstens einem Lagerring, der aus mehreren Segmenten zusammengesetzt ist, die in Umfangsrichtung an ihren Endflächen aneinander gereiht sind.The Invention relates to a rolling bearing with at least one bearing ring, which is composed of several segments is, which are lined up in the circumferential direction at their end faces.
Derartige Wälzlager werden beispielsweise eingesetzt, wenn die Lagerstelle sehr schwer zugänglich ist und daher ein geschlossener Lagerring nicht montiert werden kann oder wenn die Lagerabmessungen so groß sind, dass ein Handling der vollständigen Lagerringe kaum noch möglich ist. Letzteres trifft beispielsweise auf die Lager von Windenergieanlagen zu, die typischerweise einen Durchmesser von einigen Metern besitzen können. Häufig werden Wälzlager mit segmentierten Lagerringen auch dann eingesetzt, wenn für einen Austausch eines einteilig ausgebildeten Lagerrings umfangreiche Demontagearbeiten erforderlich wären.such roller bearing are used, for example, when the bearing point is very heavy accessible and therefore a closed bearing ring cannot be installed can or if the bearing dimensions are so large that a handling of the complete Bearing rings hardly possible anymore is. The latter, for example, affects the bearings of wind turbines which are typically a few meters in diameter can. Frequently become rolling bearings with segmented bearing rings also used when for one Replacement of a one-piece bearing ring extensive Disassembly work would be required.
Ein
Wälzlager
mit wenigstens einem segmentierten Lagerring ist beispielsweise
aus der
Die Vorteile, die ein segmentierter Lagerring bei der Montage und Demontage bietet, werden durch eine Beeinträchtigung der Laufbahn erkauft, auf denen die Wälzköper abrollen. Im Gegensatz zu einem einteiligen Lagerring ist diese Laufbahn nicht endlos ausgebildet, sondern weist in den Übergangsbereichen zweier benachbarter Segmente jeweils eine Trennstelle auf, durch die das Abwälzverhalten der Wälzkörper in der Regel nachteilig beeinflusst wird.The Advantages of a segmented bearing ring during assembly and disassembly offers are bought by impairing the career, on where the rolling bodies roll. In contrast to a one-piece bearing ring, this track is not endless trained, but points in the transition areas of two neighboring Segments each have a separation point through which the rolling behavior of the Rolling elements in is usually adversely affected.
In
diesem Zusammenhang ist es bereits aus der
Bei einigen Anwendungen lässt sich mit den bekannten Maßnahmen bereits ein zufriedenstellender Kompromiss zwischen den durch die Segmentierung erlangten Montagevorteilen und den durch die Beeinträchtigung der Laufbahn auftretenden Nachteilen erzielen. Bei einer Reihe von Anwendungen ist die mit segmentierten Wälzlagern bekannter Bauart erzielbare Lebensdauer allerdings nicht ausreichend.at some applications deal with the known measures already a satisfactory compromise between those through the Segmentation gained assembly advantages and those due to the impairment achieve career disadvantages. With a number of Applications is the type that can be achieved with segmented roller bearings of known design However, lifespan is not sufficient.
Der Erfindung liegt die Aufgabe zu Grunde, ein Wälzlager mit wenigstens einem Lagerring, der aus mehreren Segmenten zusammengesetzt ist, so auszubilden, dass sich eine möglichst lange Lebensdauer erreichen lässt.The The invention is based on the object of a rolling bearing with at least one To form a bearing ring, which is composed of several segments, that one if possible long lifespan.
Diese Aufgabe wird durch ein Wälzlager mit der Merkmalskombination des Anspruchs 1 gelöst.This Task is through a rolling bearing solved with the combination of features of claim 1.
Das erfindungsgemäße Wälzlager weist wenigstens einen Lagerring auf, der aus mehreren Segmenten zusammengesetzt ist, die in Umfangsrichtung an ihren Endflächen aneinander gereiht sind. Weiterhin weist das erfindungsgemäße Wälzlager Wälzkörper auf, die auf dem Lagerring abrollen, wobei in wenigstens einem axialen Endbereich des Lagerrings ein entsprechend dem Lagerring segmentierter Flansch ausgebildet ist, der eine Anlauffläche für die Stirnflächen der Wälzkörper aufweist. Die Besonderheit des erfindungsgemäßen Wälzlagers besteht darin, dass die Anlauffläche des Flansches in Umfangsrichtung gestuft ausgebildet ist, wobei sämtliche Stufen gleichsinnig orientiert sind.The Rolling bearing according to the invention has at least one bearing ring, which consists of several segments is composed, which in the circumferential direction to each other at their end faces are lined up. Furthermore, the rolling bearing according to the invention has rolling elements on the bearing ring unroll, in at least one axial end region of the bearing ring a flange segmented according to the bearing ring is formed is a contact surface for the end faces of the Has rolling elements. The special feature of the rolling bearing according to the invention is that the contact area of the flange is stepped in the circumferential direction, wherein all Levels are oriented in the same direction.
Die Erfindung hat den Vorteil, dass die Wälzkörper auch in den Übergangsbereichen zwischen benachbarten Segmenten sehr schonend am Flansch anlaufen, so dass der Verschleiß und das Risiko einer Beschädigung in vertretbaren Grenzen gehalten werden können. Dadurch lässt sich die Lebensdauer verglichen mit einem herkömmlichen segmentierten Wälzlager erheblich erhöhen. Es hat sich nämlich gezeigt, dass dem Anlaufen der Wälzkörper am Flansch bei einem segmentierten Wälzlager im Hinblick auf die Lebensdauer des Wälzlagers eine große Bedeutung zukommt. Bislang wurde in dieser Hinsicht lediglich dem Abrollvorgang der Wälzkörper auf der Laufbahn Beachtung geschenkt.The Invention has the advantage that the rolling elements also in the transition areas start very gently on the flange between adjacent segments, so the wear and the risk of damage can be kept within reasonable limits. This allows the service life compared to a conventional segmented roller bearing increase significantly. Because it has shown that the start of the rolling elements on Flange in a segmented roller bearing with regard to the Lifetime of the rolling bearing a big Importance. So far, only this has been done Rolling process of the rolling elements on paid attention to the career.
Insbesondere ist bei jedem Übergang zwischen benachbarten Segmenten je eine Stufe ausgebildet. Dadurch wird erreicht, dass sämtliche Stöße zwischen benachbarten Segmenten durch die erfindungsgemäße Stufung ein akzeptables Anlaufverhalten zeigen. Die Anlauffläche kann zwischen zwei aufeinander folgenden Stufen wenigstens bereichsweise entgegen der Steigung der Stufen abfallen oder ansteigen. Auf diese Weise wird der durch die Stufung entstehende Höhenversatz der Anlauffläche wieder kompensiert.In particular is with every transition one step is formed between adjacent segments. Thereby is achieved that all Bumps between neighboring segments by the grading according to the invention an acceptable Show startup behavior. The contact surface can be between two on top of each other following stages at least in some areas against the slope the steps fall or rise. In this way, the through the staggered height offset the contact area again compensated.
Die Stufen können jeweils durch ein Übergangsprofil gebrochen sein, gemäß dem sich die Anlauffläche jeweils mit Annäherung an die Endfläche des Segments zunehmend von den Stirnflächen der Wälzkörper entfernt. Durch diese zusätzliche Maßnahme kann das Anlaufverhalten der Wälzkörper im Übergangsbereich benachbarter Segmente noch weiter verbessert werden, was sich wiederum positiv auf das Verschleißverhalten und die Lebensdauer auswirkt. Vorzugsweise wird das Übergangsprofil so ausgebildet, dass es sich ausgehend von der Endfläche des Segments in Umfangsrichtung wenigstens über eine Entfernung von 0,2 mm erstreckt. Weiterhin ist es vorteilhaft, wenn sich das Übergangsprofil wenigstens bis in eine Tiefe von 0,05 mm erstreckt. Außerhalb dieser Mindestmaße kommt der positive Effekt des Übergangsprofil bei üblichen Anwendungen kaum mehr zur Geltung. Das Übergangsprofil weist in der Regel eine abgerundete Form auf, um den Übergang möglichst sanft zu gestalten.The steps can each be broken by a transition profile, according to which the contact surface increasingly moves away from the end faces of the rolling elements as the end surface of the segment approaches. This additional measure can further improve the start-up behavior of the rolling elements in the transition area of adjacent segments, which in turn has a positive effect on the wear behavior and the service life. The transition profile is preferably so formed that it extends from the end face of the segment in the circumferential direction at least over a distance of 0.2 mm. It is also advantageous if the transition profile extends at least to a depth of 0.05 mm. Outside of these minimum dimensions, the positive effect of the transition profile can hardly be seen in normal applications. The transition profile usually has a rounded shape to make the transition as smooth as possible.
In einem bevorzugten Ausführungsbeispiel sind die Wälzkörper an ihren Stirnflächen, die an der Anlauffläche anlaufen, ballig ausgebildet. Dies trägt zu einer weiteren Verbesserung des Anlaufverhaltens insbesondere in den Übergangsbereichen zwischen benachbarten Segmenten bei.In are a preferred embodiment the rolling elements their faces, the on the contact surface start up, crowned. This contributes to further improvement the start-up behavior especially in the transition areas between adjacent segments.
Das erfindungsgemäße Wälzlager ist in der Regel ausschließlich für eine Drehrichtung vorgesehen, bei der die Wälzkörper mit ihren Stirnseiten an den Stufen in Abwärtsrichtung vorübergleiten und kann beispielsweise als Kegelrollenlager ausgebildet sein. Dabei eignet sich das erfindungsgemäße Wälzlager insbesondere zum Einsatz bei einer Windenergieanlage.The Rolling bearing according to the invention is usually exclusive for one Direction of rotation provided in which the rolling elements with their end faces down the steps glide and can for example be designed as a tapered roller bearing. there the roller bearing according to the invention is suitable especially for use in a wind turbine.
Die Erfindung wird nachstehend anhand des in der Zeichnung dargestellten Ausführungsbeispiels näher erläutert.The Invention is illustrated below with reference to that in the drawing Embodiment explained in more detail.
Es zeigen:It demonstrate:
Im
Betrieb, d. h. wenn der Außenring
Die
benachbarten Innenringsegmente
- 11
- KegelrollenlagerTapered roller bearings
- 22
- Außenringouter ring
- 33
- Innenringinner ring
- 44
- InnenringsegmentInner ring segment
- 55
- KegelrolleTapered roller
- 66
- KäfigCage
- 77
- Stirnflächeface
- 88th
- Flanschflange
- 99
- Anlaufflächeapproach surface
- 1010
- Hohlwellehollow shaft
- 1111
- Schultershoulder
- 1212
- Seitenringside ring
- 1313
-
Schraube
(Seitenring
12 )Screw (side ring12 ) - 1414
-
Schraube
(Außenring
2 )Screw (outer ring2 ) - 1515
- Gehäusecasing
- 1616
- Spaltgap
- 1717
- Endflächeend face
- 1818
- Stufestep
- 1919
- ÜbergangsprofilTransition profile
Claims (11)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE20306897U DE20306897U1 (en) | 2003-05-05 | 2003-05-05 | Rolling bearing for wind power plant, for example, has segmented flange with run-on face which has stepped construction in circumferential direction, whereby all steps are orientated in same direction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE20306897U DE20306897U1 (en) | 2003-05-05 | 2003-05-05 | Rolling bearing for wind power plant, for example, has segmented flange with run-on face which has stepped construction in circumferential direction, whereby all steps are orientated in same direction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE20306897U1 true DE20306897U1 (en) | 2004-09-09 |
Family
ID=32981377
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE20306897U Expired - Lifetime DE20306897U1 (en) | 2003-05-05 | 2003-05-05 | Rolling bearing for wind power plant, for example, has segmented flange with run-on face which has stepped construction in circumferential direction, whereby all steps are orientated in same direction |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE20306897U1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102010026649A1 (en) | 2010-07-09 | 2012-01-12 | Schaeffler Technologies Gmbh & Co. Kg | Rolling bearing for the rotor bearing of a wind turbine |
| EP3470671A1 (en) * | 2017-10-13 | 2019-04-17 | General Electric Company | Wind turbine pitch bearing with line contact rolling elements |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE338588C (en) * | 1918-06-18 | 1921-06-28 | Skf Svenska Kullagerfab Ab | Ball bearing without filler hole |
| GB258809A (en) * | 1926-04-26 | 1926-09-30 | Johan Karl Kuylenstierna | Improvements in roller or ball bearings |
| US1728999A (en) * | 1926-01-15 | 1929-09-24 | Kuylenstierna Johan Karl | Roll or ball bearings |
| DE655023C (en) * | 1936-12-22 | 1938-11-02 | Felix Schanzer | Roll body bearing |
| DE945421C (en) * | 1953-11-18 | 1956-07-05 | G & J Jaeger G M B H | Double row roller bearing for adjustable propeller blades of axial fans |
| US3797897A (en) * | 1972-01-18 | 1974-03-19 | Schaeffler Ohg Industriewerk | Roller bearing |
| GB2289093A (en) * | 1994-05-06 | 1995-11-08 | Cooper Roller Bearings Company | Split roller bearing |
| DE20116649U1 (en) * | 2001-10-10 | 2001-12-06 | AB SKF, Göteborg | Bearings, especially rolling bearings |
-
2003
- 2003-05-05 DE DE20306897U patent/DE20306897U1/en not_active Expired - Lifetime
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE338588C (en) * | 1918-06-18 | 1921-06-28 | Skf Svenska Kullagerfab Ab | Ball bearing without filler hole |
| US1728999A (en) * | 1926-01-15 | 1929-09-24 | Kuylenstierna Johan Karl | Roll or ball bearings |
| GB258809A (en) * | 1926-04-26 | 1926-09-30 | Johan Karl Kuylenstierna | Improvements in roller or ball bearings |
| DE655023C (en) * | 1936-12-22 | 1938-11-02 | Felix Schanzer | Roll body bearing |
| DE945421C (en) * | 1953-11-18 | 1956-07-05 | G & J Jaeger G M B H | Double row roller bearing for adjustable propeller blades of axial fans |
| US3797897A (en) * | 1972-01-18 | 1974-03-19 | Schaeffler Ohg Industriewerk | Roller bearing |
| GB2289093A (en) * | 1994-05-06 | 1995-11-08 | Cooper Roller Bearings Company | Split roller bearing |
| DE20116649U1 (en) * | 2001-10-10 | 2001-12-06 | AB SKF, Göteborg | Bearings, especially rolling bearings |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102010026649A1 (en) | 2010-07-09 | 2012-01-12 | Schaeffler Technologies Gmbh & Co. Kg | Rolling bearing for the rotor bearing of a wind turbine |
| EP3470671A1 (en) * | 2017-10-13 | 2019-04-17 | General Electric Company | Wind turbine pitch bearing with line contact rolling elements |
| CN109667733A (en) * | 2017-10-13 | 2019-04-23 | 通用电气公司 | Pitch variable bearings and pivoting support bearing for wind turbine |
| US10677290B2 (en) | 2017-10-13 | 2020-06-09 | General Electric Company | Wind turbine pitch bearing with line contact rolling elements |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R163 | Identified publications notified | ||
| R207 | Utility model specification |
Effective date: 20041014 |
|
| R156 | Lapse of ip right after 3 years |
Effective date: 20061201 |