DE102013216841A1 - Rotor blade storage - Google Patents
Rotor blade storage Download PDFInfo
- Publication number
- DE102013216841A1 DE102013216841A1 DE102013216841.1A DE102013216841A DE102013216841A1 DE 102013216841 A1 DE102013216841 A1 DE 102013216841A1 DE 102013216841 A DE102013216841 A DE 102013216841A DE 102013216841 A1 DE102013216841 A1 DE 102013216841A1
- Authority
- DE
- Germany
- Prior art keywords
- rolling elements
- rotor blade
- blade bearing
- rows
- bearing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 238000005096 rolling process Methods 0.000 claims abstract description 52
- 230000005540 biological transmission Effects 0.000 description 2
- BUHVIAUBTBOHAG-FOYDDCNASA-N (2r,3r,4s,5r)-2-[6-[[2-(3,5-dimethoxyphenyl)-2-(2-methylphenyl)ethyl]amino]purin-9-yl]-5-(hydroxymethyl)oxolane-3,4-diol Chemical compound COC1=CC(OC)=CC(C(CNC=2C=3N=CN(C=3N=CN=2)[C@H]2[C@@H]([C@H](O)[C@@H](CO)O2)O)C=2C(=CC=CC=2)C)=C1 BUHVIAUBTBOHAG-FOYDDCNASA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D1/00—Wind motors with rotation axis substantially parallel to the air flow entering the rotor
- F03D1/06—Rotors
- F03D1/065—Rotors characterised by their construction elements
- F03D1/0658—Arrangements for fixing wind-engaging parts to a hub
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D80/00—Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
- F03D80/70—Bearing or lubricating arrangements
-
- 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
- F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
- F16C19/14—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load
- F16C19/18—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls
- F16C19/181—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls 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
- 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
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2240/00—Components
- F05B2240/50—Bearings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2260/00—Function
- F05B2260/70—Adjusting of angle of incidence or attack of rotating blades
- F05B2260/79—Bearing, support or actuation arrangements therefor
-
- 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
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Rolling Contact Bearings (AREA)
Abstract
Eine Rotorblattlagerung, insbesondere einer Windkraftanlage, weist zwei Lagerringen (2, 3), nämlich einen Außenring (3) und einen Innenring (2), sowie drei Reihen (4, 5, 6) zwischen den Lagerringen (2, 3) angeordneter Wälzkörper (7) auf, wobei der Druckwinkel jeder Reihe (4, 5, 6) an Wälzkörpern (7) mindestens 60° und höchstens 80° beträgt.A rotor blade bearing, in particular a wind turbine, has two bearing rings (2, 3), namely an outer ring (3) and an inner ring (2), and three rows (4, 5, 6) between the bearing rings (2, 3) arranged rolling elements ( 7), wherein the pressure angle of each row (4, 5, 6) of rolling elements (7) is at least 60 ° and at most 80 °.
Description
Gebiet der ErfindungField of the invention
Die Erfindung betrifft eine Rotorblattlagerung, insbesondere für eine Windkraftanlage, nach dem Oberbegriff des Anspruchs 1.The invention relates to a rotor blade bearing, in particular for a wind turbine, according to the preamble of claim 1.
Hintergrund der ErfindungBackground of the invention
Eine gattungsgemäße Rotorblattlagerung ist aus der
Weitere Wälzlageranordnungen, welche zur gleichzeitigen Übertragung von Radial- und Axialkräften ausgebildet sind, sind z. B. aus der
Aufgabe der ErfindungObject of the invention
Der Erfindung liegt die Aufgabe zugrunde, ein als Rotorblattlagerung einer Windkraftanlage ausgebildetes mehrreihiges Wälzlager gegenüber dem genannten Stand der Technik insbesondere hinsichtlich einer günstigen Relation zwischen Bauraum und Belastbarkeit, sowie einer rationellen Montierbarkeit weiterzuentwickeln.The invention has the object of further developing a trained as a rotor blade bearing a wind turbine multi-row bearing relative to the cited prior art, in particular with regard to a favorable relationship between space and capacity, as well as a rational mountability.
Beschreibung der ErfindungDescription of the invention
Diese Aufgabe wird erfindungsgemäß gelöst durch eine Rotorblattlagerung mit den Merkmalen des Anspruchs 1. Diese Rotorblattlagerung ist zur Pitchverstellung, d. h. zur Verstellung des Anstellwinkels eines Rotorblatts, in einer Windkraftanlage geeignet. Darüber hinaus ist die Rotorblattlagerung beispielsweise für Unterwasserkraftwerke geeignet. Ein weiteres mögliches Einsatzgebiet der Rotorblattlagerung sind Propeller- oder Propfanlagerungen von Flugzeugen.This object is achieved by a rotor blade bearing with the features of claim 1. This rotor blade bearing is pitch adjustment, d. H. for adjusting the angle of attack of a rotor blade, suitable in a wind turbine. In addition, the rotor blade bearing, for example, suitable for underwater power plants. Another possible field of use of the rotor blade bearing are propeller or Propfanlagerungen of aircraft.
Die Rotorblattlagerung weist in an sich bekannter Weise mindestens zwei Lagerringe, nämlich einen Innenring und einen Außenring, auf, zwischen welchen mehrere Reihen an Wälzkörpern, insbesondere Kugeln, abrollen. Erfindungsgemäß ist jede Wälzkörperreihe unter einem Druckwinkel von mindestens 60° und höchstens 80°, insbesondere unter einem Druckwinkel von mindestens 70°, in der Rotorblattlagerung positioniert. Damit dient jede Wälzkörperreihe hauptsächlich der Axiallagerung, wobei in geringerem Umfang auch Radialkräfte übertragbar sind.The rotor blade bearing has, in a manner known per se, at least two bearing rings, namely an inner ring and an outer ring, between which several rows of rolling elements, in particular balls, roll. According to the invention, each row of rolling elements is positioned at a pressure angle of at least 60 ° and at most 80 °, in particular at a pressure angle of at least 70 °, in the rotor blade bearing. Thus, each row of rolling elements mainly serves the axial bearing, and to a lesser extent radial forces are transferable.
In vorteilhafter Ausgestaltung ist sowohl der Innenring als auch der Außenring der Rotorblattlagerung zweiteilig ausgebildet. Dies hat den Vorteil, dass keine Füllstopfen in Lagerringen erforderlich sind, welche die Belastbarkeit und/oder Lebensdauer des Wälzlagers herabsetzen würden. Das Rotorblatt kann entweder mit dem Innen- oder mit dem Außenring fest verbunden sein, während der andere Lagerring an einer rotierbaren Nabe, an welcher die verstellbaren Rotorblätter gelagert sind, gehalten ist.In an advantageous embodiment, both the inner ring and the outer ring of the rotor blade bearing is formed in two parts. This has the advantage that no filler in bearing rings are required, which would reduce the capacity and / or life of the bearing. The rotor blade can be firmly connected to either the inner or the outer ring, while the other bearing ring on a rotatable hub, on which the adjustable rotor blades are mounted, is held.
Die drei Reihen an Wälzkörpern, insbesondere Kugeln, weisen vorzugsweise denselben Teilkreisdurchmesser auf. Unter dem Teilkreisdurchmesser wird der Durchmesser eines Kreises verstanden, der durch die Mittelpunkte aller Wälzkörper einer Wälzkörperreihe gelegt ist. Im Fall von Rollen, beispielsweise Zylinderrollen oder Kegelrollen, als Wälzkörper ist der Teilkreis durch die Schwerpunkte aller Wälzkörper einer Wälzkörperreihe gelegt. Die Wälzkörper der unterschiedlichen Wälzkörperreihen sind nicht notwendigerweise identisch geformt. Beispielsweise können zwei Wälzkörperreihen als Kugellager gestaltet sein, während es sich bei der dritten Wälzkörperreihe um eine Rollenlagerung handelt. Ebenso können zwei Reihen an rollenförmigen Wälzkörpern und lediglich eine einzige Kugelreihe vorgesehen sein.The three rows of rolling elements, in particular balls, preferably have the same pitch circle diameter. The pitch circle diameter is understood to mean the diameter of a circle which is laid through the center points of all the rolling bodies of a row of rolling bodies. In the case of rollers, such as cylindrical rollers or tapered rollers, as rolling elements of the pitch circle is placed by the centers of gravity of all rolling elements of a row of rolling elements. The rolling elements of the different rows of rolling elements are not necessarily identically shaped. For example, two rows of rolling elements may be designed as ball bearings, while the third row of rolling elements is a roller bearing. Likewise, two rows of roller-shaped rolling elements and only a single row of balls can be provided.
In bevorzugter Ausgestaltung sind alle Wälzkörper der Rotorblattlagerung Kugeln mit einheitlichem Durchmesser. Vorzugsweise überragt der Außenring die Wälzkörper sämtlicher Reihen in Radialrichtung nach innen. Ist der Außenring aus mehreren Ringteilen zusammengesetzt, so gilt dies für jedes Ringteil. Der Innenring überragt vorzugsweise die Wälzkörper sämtlicher Reihen in Radialrichtung nach außen. Auch dies gilt sowohl für einen einteiligen als auch für mehrteilige Innenringe. Der in Radialrichtung gemessene Überlappbereich zwischen dem Innenring und dem Außenring ist somit großer als die in derselben Richtung gemessene Breite der Wälzkörper, d. h. größer als der Kugeldurchmesser, sofern die Wälzkörper Kugeln sind.In a preferred embodiment, all rolling elements of the rotor blade bearing balls with uniform diameter. Preferably, the outer ring projects beyond the rolling elements of all rows in the radial direction inwards. If the outer ring is composed of several ring parts, this applies to each ring part. The inner ring preferably projects beyond the rolling elements of all rows in the radial direction to the outside. This also applies to both one-piece and multi-part inner rings. The overlap area between the inner ring and the outer ring measured in the radial direction is thus greater than the width of the rolling bodies measured in the same direction, ie. H. greater than the ball diameter, provided that the rolling elements are balls.
Die Druckwinkel der einzelnen Wälzkörperreihen, d. h. die Winkel zwischen einer Linie, welche durch einen Wälzkörper und dessen Anlagepunkte an den Lagerringen gelegt ist, und einer zur Rotationsachse des Lagers normalen Ebene, sind vorzugsweise bei allen Wälzkörperreihen betragsmäßig identisch. Hierbei ist die Ausrichtung der Drucklinien von zwei Wälzkörperreihen in bevorzugter Ausgestaltung der Rotorblattlagerung der Ausrichtung der Drucklinie der dritten Wälzkörperreihe entgegengerichtet. In besonders bevorzugter Ausgestaltung bilden Wälzkörperreihen, bei welchen die Druckwinkel entgegengesetzte Vorzeichen aufweisen, eine Lagerung in X-Anordnung. Mit dieser Gestaltung sind unter verschiedensten Belastungszuständen der Rotorblattlagerung, auch unter Kippbelastung, stets mindestens zwei Wälzkörperreihen an der Aufnahme von Kräften beteiligt.The contact angle of the individual rows of rolling elements, ie the angle between a line, which is laid by a rolling element and its bearing points on the bearing rings, and a plane normal to the axis of rotation of the bearing, are preferably identical in terms of amount in all Wälzkörperreihen. Here, the alignment of the pressure lines of two rows of rolling elements in a preferred embodiment of the rotor blade bearing of the alignment of the pressure line of the third row of rolling elements is directed opposite. In a particularly preferred embodiment, rows of rolling elements in which the pressure angles have opposite signs form a bearing in an X-arrangement. With this design are under various load conditions of Rotor blade bearing, even under tilting load, always involved at least two rows of rolling elements in the absorption of forces.
Kurze Beschreibung der ZeichnungShort description of the drawing
Nachfolgend wird ein Ausführungsbeispiel der Erfindung anhand einer Zeichnung näher erläutert. Hierin zeigt:An embodiment of the invention will be explained in more detail with reference to a drawing. Hereby shows:
Ausführliche Beschreibung der ZeichnungDetailed description of the drawing
Eine insgesamt mit dem Bezugszeichen
Der Innenring
In ähnlicher Weise wie der Innenring
Die Rotorblattlagerung
Die beiden in der Anordnung nach
BezugszeichenlisteLIST OF REFERENCE NUMBERS
- 11
- RotorblattlagerungRotor blade storage
- 22
- Lagerring/InnenringBearing ring / inner ring
- 33
- Lagerring/AußenringRace / outer ring
- 44
- Oberste WälzkörperreiheTopmost row of rolling elements
- 55
- Wälzkörperreiherolling body row
- 66
- Wälzkörperreiherolling body row
- 77
- Wälzkörperrolling elements
- 88th
- Einzelringsingle ring
- 99
- Einzelringsingle ring
- 1010
- Einzelringsingle ring
- 1111
- Einzelringsingle ring
- DLDL
- Druckliniepressure line
- T1T1
- Trennebeneparting plane
- T2T2
- Trennebeneparting plane
ZITATE ENTHALTEN IN DER BESCHREIBUNG QUOTES INCLUDE IN THE DESCRIPTION
Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- DE 102007052383 A1 [0002] DE 102007052383 A1 [0002]
- DE 102011082221 A1 [0003] DE 102011082221 A1 [0003]
- DE 19640895 B4 [0003] DE 19640895 B4 [0003]
Claims (10)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102013216841.1A DE102013216841A1 (en) | 2013-08-23 | 2013-08-23 | Rotor blade storage |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102013216841.1A DE102013216841A1 (en) | 2013-08-23 | 2013-08-23 | Rotor blade storage |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102013216841A1 true DE102013216841A1 (en) | 2015-02-26 |
Family
ID=52446819
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102013216841.1A Withdrawn DE102013216841A1 (en) | 2013-08-23 | 2013-08-23 | Rotor blade storage |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE102013216841A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2019219252A1 (en) * | 2018-05-18 | 2019-11-21 | Ibrahim Muhamad | Rotary connection for a rotor blade of a wind turbine |
EP3109493B1 (en) | 2015-06-25 | 2020-10-28 | thyssenkrupp rothe erde Germany GmbH | Rolling bearing assembly and a blade bearing for a wind power plant |
DE202019104423U1 (en) * | 2019-08-12 | 2020-11-13 | Rollax Gmbh & Co. Kg | Pivot bearing with axial deep groove ball bearing |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19640895B4 (en) | 1996-10-04 | 2007-07-12 | Schaeffler Kg | Rolling bearing with an integrated speed measuring device |
DE102007052383A1 (en) | 2006-10-31 | 2008-05-08 | Imo Holding Gmbh | Roller bearing system, especially a live ring, for a wind- power installation has a live ring for a revolving joint, an arrangement of bearings and ring-shaped connecting elements |
DE102011082221A1 (en) | 2011-09-07 | 2013-03-07 | Schaeffler Technologies AG & Co. KG | roller bearing |
-
2013
- 2013-08-23 DE DE102013216841.1A patent/DE102013216841A1/en not_active Withdrawn
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19640895B4 (en) | 1996-10-04 | 2007-07-12 | Schaeffler Kg | Rolling bearing with an integrated speed measuring device |
DE102007052383A1 (en) | 2006-10-31 | 2008-05-08 | Imo Holding Gmbh | Roller bearing system, especially a live ring, for a wind- power installation has a live ring for a revolving joint, an arrangement of bearings and ring-shaped connecting elements |
DE102011082221A1 (en) | 2011-09-07 | 2013-03-07 | Schaeffler Technologies AG & Co. KG | roller bearing |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3109493B1 (en) | 2015-06-25 | 2020-10-28 | thyssenkrupp rothe erde Germany GmbH | Rolling bearing assembly and a blade bearing for a wind power plant |
WO2019219252A1 (en) * | 2018-05-18 | 2019-11-21 | Ibrahim Muhamad | Rotary connection for a rotor blade of a wind turbine |
KR20200142025A (en) * | 2018-05-18 | 2020-12-21 | 이브라힘 무하마드 | Rotary connection for rotor blades in wind turbines |
CN112135967A (en) * | 2018-05-18 | 2020-12-25 | 易卜拉欣·穆哈马德 | Rotary connection for a rotor blade of a wind power plant |
JP2021528598A (en) * | 2018-05-18 | 2021-10-21 | ムハマッド、イブラヒム | Rotating coupling structure for rotor blades in wind farms |
JP7032607B2 (en) | 2018-05-18 | 2022-03-08 | ムハマッド、イブラヒム | Rotating coupling structure for rotor blades in wind farms |
KR102396667B1 (en) | 2018-05-18 | 2022-05-12 | 이브라힘 무하마드 | Rotary connection for rotor blades of wind turbines |
US11566599B2 (en) | 2018-05-18 | 2023-01-31 | Ibrahim Muhamad | Rotary connection for a rotor blade of a wind turbine |
CN112135967B (en) * | 2018-05-18 | 2023-08-18 | 易卜拉欣·穆哈马德 | Rotary connection for rotor blades of a wind power plant |
DE202019104423U1 (en) * | 2019-08-12 | 2020-11-13 | Rollax Gmbh & Co. Kg | Pivot bearing with axial deep groove ball bearing |
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R081 | Change of applicant/patentee |
Owner name: SCHAEFFLER TECHNOLOGIES AG & CO. KG, DE Free format text: FORMER OWNER: SCHAEFFLER TECHNOLOGIES AG & CO. KG, 91074 HERZOGENAURACH, DE Effective date: 20140217 Owner name: SCHAEFFLER TECHNOLOGIES AG & CO. KG, DE Free format text: FORMER OWNER: SCHAEFFLER TECHNOLOGIES GMBH & CO. KG, 91074 HERZOGENAURACH, DE Effective date: 20150408 |
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R005 | Application deemed withdrawn due to failure to request examination |