WO2011151876A1 - 風力発電装置の転がり軸受および風力発電装置 - Google Patents
風力発電装置の転がり軸受および風力発電装置 Download PDFInfo
- Publication number
- WO2011151876A1 WO2011151876A1 PCT/JP2010/059206 JP2010059206W WO2011151876A1 WO 2011151876 A1 WO2011151876 A1 WO 2011151876A1 JP 2010059206 W JP2010059206 W JP 2010059206W WO 2011151876 A1 WO2011151876 A1 WO 2011151876A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- middle wheel
- ring
- gear
- rolling bearing
- inner ring
- 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
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Classifications
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- 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
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- 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
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- 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
- F16C19/50—Other types of 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
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/52—Bearings with rolling contact, for exclusively rotary movement with devices affected by abnormal or undesired conditions
-
- 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
- F16C19/55—Systems consisting of a plurality of bearings with rolling friction with intermediate floating or independently-driven rings rotating at reduced speed or with other differential ball or roller bearings
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- 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
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- 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
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- 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
Definitions
- the present invention relates to a rolling bearing that receives a stationary high load of a wind power generator and a wind power generator using the rolling bearing.
- a wind turbine generator includes a rotor hub to which rotor blades that receive wind are attached, a rotating shaft that transmits the rotation of the rotor hub to the generator side, and a nacelle that is provided on the support and accommodates the rotating shaft, the generator, and the like. Is common.
- a bearing that supports the nacelle pedestal with respect to the support, a bearing that supports the rotor blade with rotation so that the pitch angle can be changed, and the like are used.
- a rolling bearing having an inner ring, a middle ring and an outer ring has been proposed as a rolling bearing for turning and supporting the rotor blade on the rotor hub so that the pitch angle can be changed (see Patent Document 1).
- a high load applied to the rolling bearing is dispersed by supporting the inner ring to which the rotor blades are attached from both sides by the inner ring and the outer ring.
- the present invention has been made in view of the above-described circumstances, and is capable of preventing deterioration of the lubrication state even when a high load is applied while the inner ring and the outer ring of the bearing are relatively stationary. It is an object to provide a rolling bearing of a device and a wind power generator.
- a rolling bearing for a wind turbine generator is a rolling bearing for a wind turbine generator that includes a first member and a second member that rotates relative to the first member, and the first member is attached to the rolling bearing.
- a rolling element provided between the middle wheel and the outer ring so as to roll freely, and a middle wheel driving means for rotationally driving the middle wheel.
- the middle wheel provided between the inner ring and the outer ring can rotate independently of the inner ring to which the first member is attached and the outer ring to which the second member is attached.
- the inner ring and the outer ring, as well as the first member and the second member attached thereto, are not affected even if the wheel is rotated. For this reason, the power generation efficiency is not lowered by turning the nacelle or changing the pitch angle of the rotor blades at an unnecessary timing.
- the middle wheel In the rolling bearing of the wind power generator, when the state in which the first member is stationary with respect to the second member continues for a predetermined period, the middle wheel is not driven at all times but at a necessary timing. It is preferable to include control means for controlling the middle wheel drive means so as to rotate.
- the energy required for driving the middle wheel is obtained by rotating the middle wheel by the middle wheel driving means. Can be reduced.
- the middle wheel drive means may be a power source that supplies power to the drive shaft and a gear mechanism that transmits the power output from the drive shaft to the middle wheel.
- the power source is a component that supplies power to the drive shaft, and includes various modes regardless of its physical, mechanical, or electrical configuration, such as the type of power energy, power supply mode, and drive shaft configuration. Can be taken.
- the power source for example, an electric motor that operates with electric power acquired from the outside or a generator can be considered. *
- the gear mechanism used for the middle wheel drive means is a gear mechanism capable of transmitting power, and can take various forms regardless of its physical or mechanical configuration.
- the gear used for the gear mechanism may be, for example, a pinion gear, a helical gear, a helical gear, a rack gear, a bevel gear, a crown gear, a worm gear, or a hypoid gear.
- the middle wheel protrudes in the axial direction with respect to the inner ring and the outer ring
- the gear mechanism includes a first gear attached to a drive shaft of the middle wheel driving means, and an axial direction of the middle wheel. It is conceivable to drive with a second gear that is formed on the inner peripheral surface or outer peripheral surface of the portion that protrudes into the first gear and meshes with the first gear.
- the gear mechanism may be a gear device in which a worm gear attached to the drive shaft meshes with a gear formed on an axial end surface of the middle wheel.
- one of the first member and the second member is a rotor blade and the other is a rotor hub.
- one of the first member and the second member is a support erected on the foundation, and the other is the nacelle.
- the middle wheel that can rotate independently of the inner ring and the outer ring is provided between the inner ring and the outer ring, and the middle wheel is driven to rotate by the middle wheel driving means. Since the rolling bearing is configured as described above, the rolling elements provided between the inner ring and the middle ring and between the middle ring and the outer ring roll when the middle wheel is driven to rotate. Therefore, even when a high load is applied in a state where the inner ring and the outer ring of the bearing are relatively stationary, it is possible to prevent the deterioration of the lubrication state between the raceway and the rolling element.
- the middle wheel provided between the inner ring and the outer ring can rotate independently of the inner ring to which the first member is attached and the outer ring to which the second member is attached.
- the inner ring and the outer ring, as well as the first member and the second member attached thereto, are not affected even if the wheel is rotated. For this reason, the power generation efficiency is not lowered by turning the nacelle or changing the pitch angle of the rotor blades at an unnecessary timing.
- the inner ring and the outer ring are provided between the inner ring and the outer ring, and the middle ring is driven to rotate by the middle wheel driving means.
- the rolling element provided between the middle wheel and the outer wheel rolls when the middle wheel is driven to rotate. Therefore, even when a high load is applied in a state where the inner ring and the outer ring of the bearing are relatively stationary, it is possible to prevent the deterioration of the lubrication state between the raceway and the rolling element.
- the middle wheel provided between the inner ring and the outer ring can rotate independently of the inner ring to which the first member is attached and the outer ring to which the second member is attached.
- the inner ring and the outer ring, as well as the first member and the second member attached thereto, are not affected even if the wheel is rotated. For this reason, the power generation efficiency is not lowered by turning the nacelle or changing the pitch angle of the rotor blades at an unnecessary timing.
- FIG. 1 It is a figure which shows the example of whole structure of a wind power generator. It is a side view which shows the rotating shaft and generator in a nacelle. It is sectional drawing which shows the structural example of the bearing and middle wheel drive device of this invention in a nacelle turning part. It is a top view in case a middle wheel drive device is a worm gear mechanism. It is sectional drawing which shows the structural example of the rolling bearing of a pitch drive mechanism.
- FIG. 1 is a diagram showing an example of the overall configuration of a wind turbine generator.
- the wind turbine generator 1 is mainly composed of a support column 2 erected on the foundation B, a nacelle 4 installed at the upper end of the support column 2, a rotor head 6 attached to the nacelle 4, A plurality of rotating blades 8 attached to the rotor head 6 are used.
- the column 2 has a column shape extending upward from the base B (upward in FIG. 1).
- the column 2 may be constituted by a single column member, or a plurality of units are connected in the vertical direction. And you may comprise in column shape.
- the support column 2 is composed of a plurality of units, the nacelle 4 is installed on the unit provided at the top.
- the nacelle 4 supports the rotor head 6 and houses the drive train 10 and the generator 18 therein.
- FIG. 2 is a diagram showing details of the drive train 10 and the generator 18 inside the nacelle 4.
- the drive train 10 includes a main shaft 12 connected to the rotor hub 6A of the rotor head 6, a speed increaser 14 connected to the main shaft 12, and a cup connecting the speed increaser 14 to the generator 18. Ring 16.
- the main shaft 12 rotates together with the rotor hub 6 ⁇ / b> A, and the rotation of the main shaft 12 is accelerated by the speed increaser 14, and then is transmitted to the generator 18 through the coupling 16. It is designed to be entered.
- a nacelle turning mechanism 20 for turning the nacelle 4 relative to the support 2 is provided at the lower part of the nacelle 4.
- FIG. 3 is a diagram showing a configuration example when the present invention is implemented by the nacelle turning mechanism 20.
- the nacelle turning mechanism 20 includes, for example, as shown in FIG. 3, a yaw motor 22, a pinion gear 24 that rotates by driving of the yaw motor 22, and a gear 26 that meshes with the pinion gear 24.
- the nacelle 4 is rotatably attached to the support column 2 via a rolling bearing 29 in order to enable the nacelle 4 to turn.
- the rolling bearing 29 includes an inner ring 40 and an outer ring 42 that are race rings having a common rotating shaft.
- An inner gear 26 that meshes with the pinion gear 24 is formed on the inner periphery of the inner ring 40, and the inner ring 40 is a bolt 47A.
- the outer ring 42 is fixed to the nacelle 4 by a bolt 47B.
- the inner ring 40 and the outer ring 42 of the rolling bearing 29 are relatively stationary from the viewpoint of maintaining the lubrication state of the rolling bearing 29 even when a high load is applied.
- An inner ring 50 is provided between the inner ring 40 and the outer ring 42 so that the inner ring 40 and the outer ring 42 can rotate independently of each other, and the middle ring 50 is rotationally driven by “middle wheel driving means”.
- the middle ring 50 is a race ring having a rotation axis common to the inner ring 40 and the outer ring 42, and is not fixed to the inner ring 40 and the outer ring 42, and the inner ring 40 and the outer ring 42 rotate independently. Yes.
- a groove 45 is provided between the inner ring 40 and the middle ring 50 and between the middle ring 50 and the outer ring 42, and the balls 44 are arranged so as to be able to roll so as to fit in the groove 45.
- the ball 44 is an example of a “rolling element” that rolls with the rotation of each race, and a roller may be used in place of the ball 44.
- the gap between the races (that is, around the balls 44) is filled with a lubricant 46 for lubrication.
- the lubricant 46 is not particularly limited as long as it forms a lubricant film on the surface of the ball 44 and can reduce friction between the races.
- grease is shown.
- Lubricating oil can also be used as the lubricant.
- the middle ring driving means of the rolling bearing 29 is not particularly limited as long as it can rotate the middle ring 50 of the rolling bearing 29.
- the first gear (pinion gear) 54 and The middle wheel driving motor 52 that supplies driving force to the middle wheel 50 via a “gear mechanism” including the second gear 56 may be used.
- the first gear 54 is attached to the drive shaft of the middle wheel drive motor 52, while the second gear 56 is provided on the outer periphery of the middle wheel 50.
- the second gear 56 is formed on the outer peripheral surface of a protruding portion 58 that protrudes in the axial direction of the middle wheel 50 (a portion of the middle wheel 50 that protrudes compared to the inner ring 40 and the outer ring) 58.
- 3 shows an example in which the second gear 56 is an external gear formed on the outer peripheral surface of the protruding portion 58 of the middle wheel 50.
- the second gear 56 is formed on the inner peripheral surface of the protruding portion 58.
- An internal gear may be used.
- the middle wheel 50 by rotating the middle wheel 50 by the middle wheel driving motor 52, the balls 44 roll with the rotation of the middle wheel 50, and the lubricating state by the lubricant 46 can be recovered.
- the middle wheel 50 can be driven independently of the inner wheel 40 and the outer wheel 42, if the inner wheel 40 and the outer wheel 42 are not driven (for example, the wind state received by the wind turbine generator 1 is not changed). Even if the nacelle 4 does not need to be turned), the lubrication state of the rolling bearing 29 can be maintained by driving the middle wheel 50.
- the middle wheel drive motor 52 may be driven at all times, but is preferably driven intermittently from the viewpoint of maintaining the minimum lubrication state.
- the middle wheel drive motor 52 may be periodically driven using a calendar timer, or when the lubrication state of the rolling bearing 29 is expected to deteriorate using the controller (control means) 60. Only the middle wheel driving motor 52 may be driven.
- the controller 60 it is preferable to use the controller 60 to control the middle wheel driving motor 52 so that the middle wheel 50 rotates when a state in which the turning of the nacelle 4 is not performed continues for a predetermined period.
- the middle wheel driving motor 52 is not driven, so that useless energy is not consumed.
- the second gear 56 may be provided partially along the outer peripheral surface of the middle wheel 50 (that is, the second gear 56 may not be provided over the entire circumference of the middle wheel 50).
- the middle wheel 50 reciprocates clockwise and counterclockwise by reciprocatingly driving the first gear 54 by the middle wheel driving motor 52.
- FIG. 3 shows an example in which the second gear 56 is formed on the protruding portion 58 that protrudes in the axial direction of the middle wheel 50, it may be formed on an end surface in the axial direction of the middle wheel 50.
- FIG. 4 is a top view showing a configuration example of a gear mechanism in which the second gear 56 is formed on the end surface in the axial direction of the middle wheel 50.
- the second gear 56 is formed on the axial end surface of the middle wheel 50, and the worm gear 54 ′ is used as the drive shaft of the middle wheel driving motor 52 so as to mesh with the second gear 56. It is attached.
- the inner ring 40 is fixed to the support column 2 by the bolt 47A and the outer ring 42 is fixed to the nacelle 4 by the bolt 47B. Conversely, the outer ring 42 is fixed to the support column by the bolt. It will be apparent to those skilled in the art that the inner ring 40 may be fixed to the nacelle 4 with bolts.
- the middle wheel 50 when the middle wheel 50 is rotationally driven, a high load is applied in a state where the inner ring 40 and the outer ring 42 of the rolling bearing 29 are relatively stationary. Even so, the lubrication state of the rolling bearing 29 can be maintained.
- the rotor head 6 is fixed to the nacelle 4 so as to be rotatable around a substantially horizontal axis, and the rotor hub 6A to which the rotor blades 8 are attached; And a head capsule 6B that covers the rotor hub 6A.
- the rotor hub 6A is provided with a pitch drive mechanism 30 that rotates the rotor blade 8 around its axis (in the direction of the arrow in FIG. 2) to change the pitch angle of the rotor blade 8.
- the pitch drive mechanism 30 includes a cylinder 32 and a shaft portion 34 connected to the rotary blade 8. Further, in the pitch drive mechanism 30, the rotation shaft 8 is rotatably attached to the rotor hub 6 ⁇ / b> A via the rolling bearing 36 in order to change the pitch angle of the rotation shaft 8.
- FIG. 5 is a diagram illustrating a configuration example of the rolling bearing 36 that supports the rotor blade 8 on the rotor hub 6A.
- components specifically, the balls 44 and the lubricant 46
- FIG. 5 is a diagram illustrating a configuration example of the rolling bearing 36 that supports the rotor blade 8 on the rotor hub 6A.
- components specifically, the balls 44 and the lubricant 46
- the rolling bearing 36 includes an inner ring 70 and an outer ring 72 that are race rings having a common rotating shaft, and the inner ring 70 is fixed to the rotary blade 8 by bolts 77.
- An outer ring 72 is fixed to the rotor hub 6 ⁇ / b> A by bolts 78.
- an intermediate ring 80 that can rotate independently of the inner ring 70 and the outer ring 72, and an intermediate wheel drive unit that rotationally drives the intermediate ring 80.
- the middle ring 80 is a race ring having a rotation axis common to the inner ring 70 and the outer ring 72, and is not fixed to the inner ring 70 and the outer ring 72, and the inner ring 70 and the outer ring 72 rotate independently. Yes.
- the middle ring driving means of the rolling bearing 36 is not particularly limited as long as it can rotate the middle ring 80 of the rolling bearing 36.
- the first gear (pinion gear) 84 and It may be a middle wheel drive motor 82 that supplies a driving force to the middle wheel 80 via a “gear mechanism” composed of a second gear (internal gear) 86.
- the first gear 84 is attached to the drive shaft (not shown) of the middle wheel drive motor 82, while the second gear 86 is provided on the inner periphery of the middle wheel 80.
- the second gear (internal gear) 86 is formed on the inner peripheral surface of a protruding portion 88 that protrudes in the axial direction of the middle wheel 80 (a portion of the middle wheel 80 that protrudes compared to the inner wheel 70 and the outer wheel 72).
- FIG. 5 shows an example in which the second gear 86 is an internal gear formed on the inner peripheral surface of the projecting portion 88 of the intermediate ring 80, but the second gear 86 is formed on the outer peripheral surface of the projecting portion 88.
- An external gear may be used.
- the middle wheel drive motor 82 may be always driven, but is preferably driven intermittently from the viewpoint of energy saving.
- the middle wheel drive motor 82 may be periodically driven using a calendar timer, or when the lubrication state of the rolling bearing 36 is expected to deteriorate using the controller (control means) 60. Only the middle wheel drive motor 82 may be driven.
- the controller 60 it is preferable to use the controller 60 to control the middle wheel drive motor 82 so that the middle wheel 80 rotates when a state in which the pitch angle of the rotary shaft 8 is not changed continues for a predetermined period.
- the middle wheel driving motor 82 is not driven, and therefore, useless energy is not consumed. .
- the second gear 86 may be provided over the entire circumference of the middle wheel 80, or may be provided on a part of the outer circumferential surface or the inner circumferential surface of the middle wheel 80.
- the middle wheel 80 reciprocates clockwise and counterclockwise by reciprocatingly driving the first gear 84 by the middle wheel driving motor 82.
- the configuration of the gear mechanism is as follows. It is not limited to this example, The gear of various aspects including a worm gear can be used.
- the inner ring 70 is fixed to the rotor blade 8 by the bolt 77 and the outer ring 72 is fixed to the rotor hub 6A by the bolt 78. Conversely, the outer ring 72 is fixed by the bolt. It will be apparent to those skilled in the art that the inner ring 70 may be fixed to the rotor hub 6A by bolts and fixed to the rotor blades 8.
- the middle wheel 80 when the middle wheel 80 is rotationally driven, a high load is applied in a state where the inner ring 70 and the outer ring 72 of the rolling bearing 36 are relatively stationary. Even so, the lubrication state of the rolling bearing 36 can be maintained.
- the rolling bearing 29 and the rolling bearing 36 that include the middle wheel (50, 80) and the middle wheel driving means that rotationally drives the middle wheel (50, 80) are respectively connected to the nacelle turning mechanism.
- only one of the rolling bearing 29 and the rolling bearing 36 may be used, or a bearing having the same configuration as that of the rolling bearing 29 and the rolling bearing 36 may be used as a relative bearing. It may be provided between the other two members (“first member” and “second member”) that rotate in rotation.
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- 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)
- Wind Motors (AREA)
- Rolling Contact Bearings (AREA)
- Gear Transmission (AREA)
Abstract
Description
また、内輪及び外輪間に設けられた中輪は、第1部材が取り付けられた内輪と、第2部材が取り付けられた外輪とは独立して回転可能であるため、中輪駆動手段によって中輪を回転させても、内輪及び外輪、並びにこれらに取り付けられた第1部材及び第2部材は影響を受けない。このため、本来なら不要なタイミングで、ナセルの旋回や回転翼のピッチ角変更を行って、発電効率を低下させてしまうようなことがない。
このような転がり軸受29を介してナセル4を支柱2に取り付けることで、ヨーモータ22の駆動時に、ピニオンギヤ24から内歯車26に動力が伝達され、転がり軸受29の外輪42に固定されたナセル4が、転がり軸受29の内輪40に固定された支柱2に対して相対的に旋回する。なお、ヨーモータ22は旋回を制御するコントローラ60により駆動を制御される。これによりヨーモータ22が駆動し、ナセル4の旋回を行うようになっている。
特に、コントローラ60を用いて、ナセル4の旋回が行われない状態が所定の期間続く場合に、中輪50が回転するように中輪駆動用モータ52を制御するのが好ましい。これにより、ナセル4の旋回が長期間にわたって行われず、潤滑状態の悪化が予想される場合を除けば、中輪駆動用モータ52は駆動しないので、無駄なエネルギーを消費することもない。
図4は、第2歯車56が中輪50の軸方向端面に形成されたギヤ機構の構成例を示す上面図である。図4に示すギヤ機構では、中輪50の軸方向端面に第2歯車56が形成されており、この第2歯車56と噛み合うように、ウォームギヤ54’を中輪駆動用モータ52の駆動軸に取り付けている。
このような転がり軸受36を介して回転軸8をロータハブ6Aに取り付けることで、シリンダ32(図2参照)によって軸部34(図2参照)を回転させると、回転翼8が固定された内輪70は、ロータハブ6Aが固定された外輪72に対して相対的に回転して、回転翼8のピッチ角が変更される。
特に、コントローラ60を用いて、回転軸8のピッチ角変更が行われない状態が所定の期間続く場合に、中輪80が回転するように中輪駆動用モータ82を制御するのが好ましい。これにより、回転軸8のピッチ角変更が長期間にわたって行われず、潤滑状態の悪化が予想される場合を除けば、中輪駆動用モータ82は駆動しないので、無駄なエネルギーを消費することもない。
2 支柱
4 ナセル
6 ロータヘッド
8 回転翼
10 ドライブトレイン
12 主軸
14 増速機
16 カップリング
18 発電機
20 ナセル旋回機構
22 ヨーモータ
24 ピニオンギヤ
26 内歯車
28 ヨーブレーキ機構
29 転がり軸受
30 ピッチ駆動機構
32 シリンダ
34 軸部
36 転がり軸受
40 内輪
42 外輪
44 玉
46 潤滑剤
50 中輪
52 中輪駆動用モータ
54 第1歯車
56 第2歯車
58 突出部
60 コントローラ
70 内輪
72 外輪
80 中輪
82 中輪駆動用モータ
84 第1歯車
86 第2歯車
88 突出部
Claims (8)
- 第1部材及び該第1部材に対して相対的に回転する第2部材を備える風力発電装置の転がり軸受であって、
前記第1部材が取り付けられた内輪と、
前記第2部材が取り付けられた外輪と、
前記内輪及び前記外輪の間に設けられ、前記内輪と前記外輪とは独立して回転可能な中輪と、
前記内輪及び前記中輪間、並びに前記中輪及び前記外輪間に転動自在に設けられた転動体と、
前記中輪を回転駆動する中輪駆動手段とを備えることを特徴とする風力発電装置の転がり軸受。 - 前記第1部材が前記第2部材に対して静止した状態が所定の期間続く場合に、前記中輪が回転するように前記中輪駆動手段を制御する制御手段をさらに備えることを特徴とする請求項1に記載の風力発電装置の転がり軸受。
- 前記中輪駆動手段は、駆動軸に対し動力を供給する動力源と、前記駆動軸から出力された動力を前記中輪に伝えるギヤ機構とを含むことを特徴とする請求項1又は2に記載の風力発電装置の転がり軸受。
- 前記中輪は、前記内輪及び前記外輪に対して軸方向に突出しており、
前記ギヤ機構は、前記中輪駆動手段の前記駆動軸に取り付けられた第1歯車と、前記中輪の軸方向に突出した部分の内周面又は外周面に形成され、前記第1歯車に噛み合う第2歯車とを含むことを特徴とする請求項3に記載の風力発電装置の転がり軸受。 - 前記ギヤ機構は、前記駆動軸に取り付けられたウォームギヤと、前記中輪の軸方向端面に形成され、前記ウォームギヤと噛み合う歯車とを含むことを特徴とする請求項3に記載の風力発電装置の転がり軸受。
- 前記第1部材及び第2部材の一方が回転翼であり、他方がロータハブであることを特徴とする請求項1、2、4のいずれか一項に記載の風力発電装置の転がり軸受。
- 前記第1部材及び第2部材の一方が基礎に立設した支柱であり、他方がナセルであることを特徴とする請求項1、2、4のいずれか一項に記載の風力発電装置の転がり軸受。
- 請求項1、2、4、5のいずれか一項に記載の転がり軸受と、
前記転がり軸受の内輪に取り付けられる第1部材と、
前記転がり軸受の外輪に取り付けられ、前記第1部材に対して相対的に回転する第2部材とを備えることを特徴とする風力発電装置。
Priority Applications (8)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP10734429A EP2410172A1 (en) | 2010-05-31 | 2010-05-31 | Rolling bearing for wind power generator, and wind power generator |
| JP2010525144A JP5222364B2 (ja) | 2010-05-31 | 2010-05-31 | 風力発電装置の転がり軸受および風力発電装置 |
| PCT/JP2010/059206 WO2011151876A1 (ja) | 2010-05-31 | 2010-05-31 | 風力発電装置の転がり軸受および風力発電装置 |
| AU2010276464A AU2010276464A1 (en) | 2010-05-31 | 2010-05-31 | Wind turbine generator and rolling bearing for wind turbine generator |
| CA2737396A CA2737396A1 (en) | 2010-05-31 | 2010-05-31 | Wind turbine generator and rolling bearing for wing turbine generator |
| CN2010800033486A CN102439291A (zh) | 2010-05-31 | 2010-05-31 | 风力涡轮机发电机和用于风力涡轮机发电机的滚动轴承 |
| BRPI1005498A BRPI1005498A2 (pt) | 2010-05-31 | 2010-05-31 | mancal de rolamento para um gerador de turbina eólica , e, gerador de turbina eólica |
| US12/845,152 US8348598B2 (en) | 2010-05-31 | 2010-07-28 | Wind turbine generator and rolling bearing for wind turbine generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2010/059206 WO2011151876A1 (ja) | 2010-05-31 | 2010-05-31 | 風力発電装置の転がり軸受および風力発電装置 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2011151876A1 true WO2011151876A1 (ja) | 2011-12-08 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2010/059206 Ceased WO2011151876A1 (ja) | 2010-05-31 | 2010-05-31 | 風力発電装置の転がり軸受および風力発電装置 |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US8348598B2 (ja) |
| EP (1) | EP2410172A1 (ja) |
| JP (1) | JP5222364B2 (ja) |
| CN (1) | CN102439291A (ja) |
| AU (1) | AU2010276464A1 (ja) |
| BR (1) | BRPI1005498A2 (ja) |
| CA (1) | CA2737396A1 (ja) |
| WO (1) | WO2011151876A1 (ja) |
Cited By (1)
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| WO2014122719A1 (ja) * | 2013-02-05 | 2014-08-14 | 三菱重工業株式会社 | 軸受支持構造及び風力発電装置 |
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| EP2372146B1 (en) * | 2010-03-29 | 2012-12-05 | Vestas Wind Systems A/S | A wind turbine and a pitch bearing for a wind turbine |
| KR101582293B1 (ko) * | 2013-11-11 | 2016-01-21 | 이상환 | 풍력 포집 발전장치 |
| JP6352074B2 (ja) | 2014-06-27 | 2018-07-04 | ナブテスコ株式会社 | 風車用回転駆動機構 |
| EP3269974B1 (en) * | 2016-07-12 | 2022-01-05 | Siemens Gamesa Renewable Energy A/S | Wind turbine with rotor blade pitch arrangement |
| DE102016113786A1 (de) * | 2016-07-27 | 2018-02-01 | Thyssenkrupp Ag | Verfahren zur Anstellwinkelverstellung eines Rotorblattes einer Windkraftanlage und Windkraftanlage |
| DE102016113785A1 (de) * | 2016-07-27 | 2018-02-01 | Thyssenkrupp Ag | Verfahren zur Anstellwinkelverstellung eines Rotorblattes einer Windkraftanlage und Windkraftanlage |
| CN106930907B (zh) * | 2017-04-27 | 2019-01-15 | 湘电风能有限公司 | 一种风力涡轮机变桨轴承降载装置 |
| ES2723800A1 (es) * | 2018-02-23 | 2019-09-02 | Laulagun Bearings S L | Rodamiento con pista de rodadura rotatoria y método de mantenimiento de rodamiento con pista de rodadura rotatoria |
| DE202018103079U1 (de) * | 2018-06-01 | 2019-09-03 | Liebherr-Components Biberach Gmbh | Wälzlager |
| DE102019206235A1 (de) * | 2019-04-30 | 2020-11-05 | Aktiebolaget Skf | Wälzlager mit drei konzentrischen Ringen |
| CN111911541B (zh) * | 2020-08-13 | 2022-02-08 | 上海电气液压气动有限公司 | 一种风机轴承保护方法 |
| CN117167198B (zh) * | 2023-10-25 | 2024-02-06 | 泰州巨纳新能源有限公司 | 一种基于新型能源的风力发电设备 |
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- 2010-05-31 JP JP2010525144A patent/JP5222364B2/ja not_active Expired - Fee Related
- 2010-05-31 CA CA2737396A patent/CA2737396A1/en not_active Abandoned
- 2010-05-31 AU AU2010276464A patent/AU2010276464A1/en not_active Abandoned
- 2010-05-31 CN CN2010800033486A patent/CN102439291A/zh active Pending
- 2010-05-31 BR BRPI1005498A patent/BRPI1005498A2/pt not_active IP Right Cessation
- 2010-05-31 EP EP10734429A patent/EP2410172A1/en not_active Withdrawn
- 2010-05-31 WO PCT/JP2010/059206 patent/WO2011151876A1/ja not_active Ceased
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Also Published As
| Publication number | Publication date |
|---|---|
| US20110291422A1 (en) | 2011-12-01 |
| EP2410172A1 (en) | 2012-01-25 |
| JPWO2011151876A1 (ja) | 2013-07-25 |
| JP5222364B2 (ja) | 2013-06-26 |
| US8348598B2 (en) | 2013-01-08 |
| CN102439291A (zh) | 2012-05-02 |
| AU2010276464A1 (en) | 2011-12-15 |
| BRPI1005498A2 (pt) | 2016-03-08 |
| CA2737396A1 (en) | 2011-11-30 |
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