WO2011099120A1 - 風力発電装置の軸受補修方法 - Google Patents
風力発電装置の軸受補修方法 Download PDFInfo
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- WO2011099120A1 WO2011099120A1 PCT/JP2010/051933 JP2010051933W WO2011099120A1 WO 2011099120 A1 WO2011099120 A1 WO 2011099120A1 JP 2010051933 W JP2010051933 W JP 2010051933W WO 2011099120 A1 WO2011099120 A1 WO 2011099120A1
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- WIPO (PCT)
- Prior art keywords
- bearing
- plate
- wind turbine
- outer cylinder
- main shaft
- Prior art date
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- 230000008439 repair process Effects 0.000 claims description 33
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Images
Classifications
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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
- F03D80/50—Maintenance or repair
-
- 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
- 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
- F16C35/077—Fixing them on the shaft or housing with interposition of an element between housing and outer race ring
-
- 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
- F05B2230/00—Manufacture
- F05B2230/80—Repairing, retrofitting or upgrading methods
-
- 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
- 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
- F16C2237/00—Repair or replacement
-
- 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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49316—Impeller making
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- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49316—Impeller making
- Y10T29/49318—Repairing or disassembling
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49316—Impeller making
- Y10T29/49327—Axial blower or fan
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49316—Impeller making
- Y10T29/49332—Propeller making
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49636—Process for making bearing or component thereof
- Y10T29/49638—Repairing
Definitions
- the present invention relates to a bearing repair method for a wind turbine generator, and more particularly, to a bearing repair method for filling a gap between a constituent member such as a housing member or a shaft member of a wind turbine generator and a bearing ring.
- a wind turbine generator generally includes a rotor head to which a rotor blade is attached, a nacelle that houses a rotating shaft and a generator, and a support column that supports the nacelle. Further, in order to improve the power generation efficiency, yaw turning for turning the nacelle and pitch control for rotating the rotor blades in the pitch direction are often performed in accordance with wind conditions.
- a main bearing that rotatably supports the main shaft, a bearing that supports the nacelle base plate on a support column (a bearing of the nacelle swivel mechanism), and a rotor blade that rotates freely on the rotor head side.
- Various bearings represented by bearings to be supported are used.
- Patent Documents 1 and 2 disclose a self-aligning roller bearing in which a bearing ring is divided into a plane parallel to a rotation axis and is tightened with a bolt as a bearing used for a main bearing of a wind power generator. Are listed. In this self-aligning roller bearing, since the raceway is divided, the bearing can be easily repaired and replaced.
- each bearing ring (inner ring and outer ring) of the bearing is fixed to a constituent member (hereinafter referred to as “device-side member”) such as a housing member or a shaft member of the wind turbine generator.
- the bearing ring may rotate with respect to the apparatus side member due to the sudden high load, and the apparatus side member may be thinned by friction between the two.
- the thinning of the device side member proceeds, a gap is generated between the device side member and the bearing ring of the bearing, and the bearing ring that should have been fixed to the device side member is relative to the device side member. In some cases, the air bearing becomes idle and cannot function as a bearing.
- the present invention has been made in view of the above-described circumstances, and it is possible to repair a bearing of a wind turbine generator that can more permanently repair a gap generated between the device-side member and the bearing ring of the bearing. It aims to provide a method.
- a bearing repair method for a wind turbine generator is a method for repairing a bearing of a wind turbine generator, the component of the wind turbine generator fixed to the bearing ring of the bearing, and the bearing ring of the bearing.
- the plate is inserted between the component of the wind turbine generator (device side member) and the bearing raceway, and the plate is fixed to the device side member.
- a gap created between the bearing ring and the bearing ring can be filled with a plate.
- an excessive shear force is not applied to the plate even when a high load due to a strong wind suddenly acts on the bearing. . Therefore, since the filling state of the plate is not deteriorated by an excessive shearing force, the gap generated between the apparatus side member and the bearing ring of the bearing can be repaired more permanently.
- “Slip is allowed” between the plate and the bearing raceway means that the plate is not positively fixed to the raceway. Specifically, the plate and the raceway are in contact with each other. However, it refers to the state of sliding relatively when an external force that exceeds the static friction force between the two works.
- the “constituent member of the wind turbine generator” refers to any member that is fixed to the bearing ring of the wind turbine generator.
- the main shaft inner cylinder and the spindle that are fixed to the bearing ring of the main bearing of the wind turbine generator.
- the outer cylinder, the rotor blade and the rotor hub fixed to the bearing ring of the bearing of the pitch drive mechanism, and the nacelle base plate and the column fixed to the bearing ring of the bearing of the nacelle turning mechanism.
- the plate is divided into a plurality of pieces including a wedge piece, and in the step of inserting the plate, the plurality of pieces excluding the wedge piece are removed from the wind power generator. It is preferable that the wedge piece is driven after being inserted between the component member and the bearing ring of the bearing.
- the plate can be easily inserted between the device-side member and the bearing raceway.
- the plate after inserting a plurality of pieces excluding the wedge piece between the device side member and the bearing raceway, by driving the last remaining wedge piece, adjacent pieces come into close contact with each other, and each piece Pressed against the member. Therefore, the gap between the apparatus-side member and the bearing ring can be reliably filled with the plate.
- the plate is preferably made of a resin material having a specific wear amount of 1.0 ⁇ 10 ⁇ 9 mm 3 / Nmm or less and a static friction coefficient of 0.15 or less.
- the track ring is formed so that an insertion port for inserting the plate between the component member and the track ring is formed before the step of inserting the plate. It is preferable that the method further comprises a step of cutting the end face of the component member in the periphery of the.
- the thinning of the device-side member caused by the raceway ring rotating with respect to the device-side member due to a sudden high load does not always proceed at a constant speed in the axial direction of the bearing.
- the thinning of the apparatus side member hardly occurs on the protruding end face of the apparatus side member.
- it is difficult to insert a repair plate between the device-side member and the raceway because a portion of the end surface of the device-side member that is not thinned becomes an obstacle.
- the end face of the device side member around the bearing raceway is shaved and a plate insertion port is formed in advance, so that repair is performed between the device side member and the raceway ring. Can be easily inserted.
- the component member may be a main shaft outer cylinder of the wind power generator, and the bearing may be a main bearing in which an outer ring is fixed to the main shaft outer cylinder.
- the main bearing may be separated from the nacelle base plate of the wind power generator.
- the main bearing when the main bearing is separated from the nacelle base plate, the main bearing extends over the entire circumference of the main bearing even when the main bearing is attached to the main shaft inner cylinder and main shaft outer cylinder of the wind turbine generator.
- a plate can be inserted into the gap between the outer ring and the main shaft outer cylinder. Therefore, since the main bearing can be repaired without removing it from the wind turbine generator by the above-described bearing repair method, the working efficiency is greatly increased.
- the plate is inserted between the component of the wind turbine generator (device side member) and the bearing ring, and the plate is fixed to the device side member. It is possible to fill the gap that has occurred between them with a plate.
- an excessive shear force is not applied to the plate even when a high load due to a strong wind suddenly acts on the bearing. . Therefore, since the filling state of the plate is not deteriorated by an excessive shearing force, the gap generated between the apparatus side member and the bearing ring of the bearing can be repaired more permanently.
- FIG. 1 It is a figure which shows the example of whole structure of a wind power generator. It is a figure which shows the structural example inside the rotor head and nacelle of the wind power generator shown in FIG. It is sectional drawing which shows the structural example of a nacelle turning mechanism. It is an enlarged view which shows the periphery of the main shaft outer cylinder and main bearing of the wind power generator shown in FIG. It is a top view which shows the state which inserted the plate divided
- FIG. 1 is a diagram illustrating an example of the overall configuration of a wind turbine generator according to the present embodiment.
- the wind turbine generator 1 is mainly composed of a column 2 erected on the foundation B, a nacelle 4 installed at the upper end of the column 2, and 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 rotatably supports the rotor head 6 and houses various devices such as a generator and a nacelle turning mechanism.
- a plurality of rotor blades 8 are attached to the rotor head 6 radially about the rotor head 6.
- FIG. 2 is a diagram illustrating an internal configuration example of the rotor head 6 and the nacelle 4.
- the rotor head 6 is fixed to the nacelle 4 so as to be rotatable about a substantially horizontal axis (rotation axis C), and covers the rotor hub 6A to which the rotor blades 8 are attached, and the rotor hub 6A.
- a head capsule 6B a head capsule 6B.
- the rotor hub 6A has a main shaft outer cylinder 10 formed in a cylindrical shape around the rotation axis C.
- the main shaft outer cylinder 10 rotates about the rotation axis C together with the rotor hub 6A when the rotor blades 8 receive wind force.
- the main shaft outer cylinder 10 is rotatably supported by a main shaft inner cylinder 14 via a main bearing 12.
- the main shaft inner cylinder 14 is formed in a support member 15 that is a fixed system that does not rotate as a columnar shape around the rotation axis C.
- the support member 15 is fixed to a nacelle base plate 21 of a nacelle turning mechanism 20 described later.
- a generator 16 is attached to a main spindle outer cylinder 10 that is rotatably supported by a main spindle inner cylinder 14 via a main bearing 12.
- the generator 16 is a so-called synchronous generator, and includes a generator rotor 17, a rotor 18, and a stator 19.
- the rotor 18 of the generator 16 is composed of multi-pole (for example, 96-pole) magnets, and specifically, the generator rotor with N-pole magnets and S-pole magnets alternately spaced from each other. 17 are arranged over the entire circumference.
- the generator rotor 17 is an annular member fixed to the outer periphery of the main shaft outer cylinder 10, and supports the rotor 18 on the outer peripheral surface thereof.
- the stator 19 of the generator 16 has a configuration in which a plurality of coils are arranged at intervals.
- the stator 19 is fixed to a support member 15 that is a fixed system so as to face the rotor 18 supported by the generator rotor 17.
- the generator 16 having such a configuration, when the rotor 18 rotates with the rotation of the rotor hub 6A, an induced current is generated in the coil of the stationary stator 19. At this time, since the rotor 18 is multipolar, the generator 16 can generate AC power having a sufficiently high frequency even when the angular velocity of the rotor 18 is small. Note that the AC power generated by the generator 16 is PWM (Pulse) in the AC-DC-AC link. By the (Width Modulation) control, the frequency and voltage are controlled to be sent to the power transmission system.
- PWM Pulse
- the frequency and voltage are controlled to be sent to the power transmission system.
- the nacelle turning mechanism 20 is provided in the lower part of the nacelle 4, and the nacelle 4 can be yaw-turned according to a wind direction.
- FIG. 3 is a diagram illustrating a configuration example of the nacelle turning mechanism 20.
- the nacelle turning mechanism 20 includes a nacelle base plate 21, a yaw motor 22, a pinion 24 that rotates by driving the yaw motor 22, and a bearing 26 in which an inner gear 27 that meshes with the pinion 24 is formed on the inner ring 26 ⁇ / b> A.
- a yaw brake mechanism 28 having a brake disk 28A and a brake shoe 28B.
- the yaw motor 22, the pinion 24, the outer ring 26 ⁇ / b> B of the bearing 26 and the brake shoe 28 ⁇ / b> B are fixed to the nacelle base plate 21 side, while the inner ring 26 ⁇ / b> A and the brake disc 28 ⁇ / b> A of the bearing 26 are on the support 2 side. It is fixed.
- the rotor hub 6A is provided with a pitch driving mechanism 30 that rotates the rotor blade 8 around the axis (in the direction of the arrow in FIG. 2) to change the pitch angle of the rotor blade 8. ing.
- the pitch drive mechanism 30 is composed of a cylinder 32 attached to the rotor hub 6 ⁇ / b> A and a shaft portion 34 connected to the rotary blade 8.
- the rotor blade 8 is supported by the bearing 36 so as to be rotatable in the pitch direction. For this reason, the rotating blade 8 rotates in the pitch direction together with the shaft portion 34 when the shaft portion 34 rotates by the cylinder 32 of the pitch drive mechanism 30.
- the pitch drive mechanism 30 provided for each rotary blade 8 is connected to each other by a link mechanism (not shown), and the pitch angle control of each rotary blade 8 may be performed in conjunction.
- the main bearing 12 that rotatably supports the main shaft outer cylinder 10 on the main shaft inner cylinder 14, the bearing 26 of the nacelle turning mechanism 20, the bearing 36 of the pitch driving mechanism 30, and the like.
- This type of bearing is used.
- the wind power generator 1 since the wind power generator 1 is constantly exposed to an external force called wind, a sudden load may be applied to the bearing, and the device side member in the vicinity of the bearing (of the wind power generator 1 is as follows). The structural member) may be thinned.
- FIG. 4 is an enlarged view showing the periphery of the main shaft outer cylinder 10 and the main bearing 12 of the wind power generator 1 and shows a state in which the main shaft outer cylinder 10 of the wind power generator 1 is thinned.
- the main shaft outer cylinder 10 is supported by a main shaft inner cylinder 14 by a main bearing 12.
- the main bearing 12 has a configuration in which a plurality of rolling elements (rollers) 12C are arranged between an outer ring 12A fixed to the main spindle outer cylinder 10 and an inner ring 12B fixed to the main spindle inner cylinder 14.
- the thinning phenomenon of the apparatus side member (component member of the wind power generator 1) in the vicinity of the bearing described above can also occur in the main shaft inner cylinder 14, and the same thinning phenomenon occurs in other bearings of the wind power generator 1.
- the bearing repair method according to the present embodiment will be described by taking as an example the case where the main shaft outer cylinder 10 of the main bearing 12 of the wind turbine generator 1 is thinned.
- the bearing repair method of the present invention can be applied to the case where the main shaft inner cylinder 14 is thinned, and can also be applied to bearings other than the main bearing 12 of the wind turbine generator 1.
- the plate 40 when the gap 13 is generated between the main shaft outer cylinder 10 and the outer ring 12A of the main bearing 12, the plate 40 is inserted into the gap 13 from the arrow direction as shown in FIG.
- the thickness of the plate 40 to be inserted is preferably determined according to the size of the gap 13.
- the adhesive 41 is applied only to the surface of the plate 40 on the main shaft outer cylinder 10 side. Accordingly, the gap 13 is filled with the plate 40 and the plate 40 and the inner peripheral surface of the main spindle outer cylinder 10 are fixed by the adhesive 41.
- sliding is allowed between the plate 40 and the outer peripheral surface of the outer ring 12A.
- “sliding is allowed” between the plate 40 and the outer ring 12A means a state in which the plate 40 is not positively fixed to the outer ring 12A. Specifically, the plate 40 and the outer ring 12A are not fixed. Although it is in contact for the time being, it refers to the state of sliding relatively when an external force exceeding the static friction force between the two is applied.
- the plate 40 is not limited as long as it has a characteristic that allows slipping between the outer ring 12A and the plate 40, and various kinds of materials such as a resin material and a rubber material can be used.
- materials such as a resin material and a rubber material
- PTFE polytetrafluoroethylene
- HDPE high density polyethylene
- PETP polyethylene terephthalate
- PBTP polybutylene terephasalat
- POM polyoxymethylene
- PA6 polyamide 6
- PA66 polyamide 66
- a resin material such as polyimide (PI) can be used. Since various types of bearings including the main bearing 12 of the wind power generator 1 have different sizes, shapes, and required strengths, the material of the plate 40 after considering the strength and manufacturability according to the repair location. Is preferably selected.
- a resin material having a specific wear amount of 1.0 ⁇ 10 ⁇ 9 mm 3 / Nmm or less as the plate 40.
- the specific wear amount of the plate (resin material) 40 it is preferable to use a resin material having a specific wear amount of 1.0 ⁇ 10 ⁇ 9 mm 3 / Nmm or less.
- the plate 40 is preferably made of a resin material having a static friction coefficient of 0.15 or less. In this way, by setting the coefficient of static friction of the plate (resin material) 40 to 0.15 or less, the relative slip between the plate 40 and the outer ring 12A when a relatively low load is applied to the main bearing 12. It is possible to reliably prevent an excessive shearing force from being applied to the plate 40.
- the specific wear amount of the plate 40 is 1.0 ⁇ 10 ⁇ 9 mm 3 from the viewpoint of achieving both the long-term maintenance of the filling state of the plate 40 and the prevention of excessive shearing force applied to the plate 40. It is preferable to use a resin material having a static friction coefficient of 0.15 or less.
- the plate 40 is preferably divided into a plurality of pieces from the viewpoint of easy insertion into the gap 13 between the bearing outer cylinder 10 and the outer ring 12A.
- FIG. 5 is a plan view showing a state where the plate 40 divided into a plurality of pieces is inserted into the gap 13.
- a plate 40 divided into a plurality of pieces 42 is inserted between the bearing outer cylinder 10 and the outer ring 12 ⁇ / b> A of the main bearing 12.
- FIG. 6 is a perspective view showing a plate 40 composed of a plurality of pieces 42 including wedge-shaped pieces.
- one of the divided pieces 42 is a wedge-shaped wedge piece 44 having an inclined surface 45 and having a width that narrows from one end to the other end.
- the pair of pieces 43 has an inclined surface 43 ⁇ / b> A corresponding to the inclined surface 45 of the wedge piece 44, and comes into close contact with the wedge piece 44.
- a plurality of pieces 42 and 43 excluding the wedge piece 44 are inserted into the gap 13 between the main spindle outer cylinder 10 and the outer ring 12A, and then the wedge piece 44 is paired with a pair of pieces 43. It is preferable to drive in between.
- the piece 43 is pushed in the direction of the arrow, the adjacent pieces 42 and 43 are brought into close contact with each other, and the pieces 42 and 43 are pushed against the inner peripheral surface of the spindle outer cylinder 10. Therefore, the gap 13 between the main shaft outer cylinder 10 and the outer ring 12 ⁇ / b> A of the main bearing 12 can be reliably filled with the plate 40.
- the bearing repair method of the present embodiment includes the step of inserting the plate 40 between the main shaft outer cylinder 10 fixed to the outer ring 12A of the main bearing 12 and the outer ring 12A of the main bearing 12, And fixing the plate 40 to the cylinder 10. Slip is allowed between the plate 40 and the outer ring 12A.
- the main shaft outer cylinder 10 and the outer ring 12A of the main bearing 12 are interposed.
- the generated gap can be filled with the plate 40.
- an excessive shearing force may be applied to the plate 40 even when a high load due to strong winds suddenly acts on the main bearing 12. Absent. Therefore, since the filling state of the plate 40 is not deteriorated by an excessive shearing force, the gap 13 generated between the main shaft outer cylinder 10 and the outer ring 12A of the main bearing 12 is repaired more permanently. be able to.
- the plate 40 is divided into a plurality of pieces 42 and 43 including a wedge piece 44, and in the step of inserting the plate 40, the plurality of pieces 42 and 43 excluding the wedge piece 44 are separated from the main spindle outer cylinder 10.
- the wedge piece 44 is preferably driven between the pair of pieces 43 after being inserted into the gap 13 between the outer ring 12 ⁇ / b> A of the bearing 12.
- the plate 40 is preferably made of a resin material having a specific wear amount of 1.0 ⁇ 10 ⁇ 9 mm 3 / Nmm or less and a static friction coefficient of 0.15 or less.
- the main shaft outer cylinder 10 fixed to the outer ring 12A of the main bearing 12 is particularly thin. Is easy to progress. Thus, it is effective to repair the main shaft outer cylinder 10 in which the thinning easily proceeds by the bearing repair method of the present embodiment.
- the main bearing 12 when the main bearing 12 is separated from the nacelle base plate 21, according to the bearing repair method of the present embodiment, the main bearing 12 can be repaired without being removed from the wind power generator 1. Therefore, the work efficiency is greatly improved.
- the process before inserting the plate 40 into the gap 13 between the main shaft outer cylinder 10 and the outer ring 12A of the main bearing 12 has not been particularly described, but as described below, Before the plate 40 is inserted, a part of the main spindle outer cylinder 10 may be scraped off so that the plate 40 can be easily inserted.
- FIG. 7 is a cross-sectional view showing the periphery of the spindle outer cylinder 10 and the main bearing 12.
- the thinning of the main shaft outer cylinder 10 caused by the outer ring 12A of the main bearing 12 rotating relative to the main shaft outer cylinder 10 due to a sudden high load is the axial direction of the main bearing (in this case, the rotation axis C). Does not always progress at a constant speed. For example, when the end surface of the main shaft outer cylinder 10 protrudes outside the end surface of the outer ring 12A of the main bearing 12 (in this case, the rotor head 6 side), the thinning of the main shaft outer cylinder 10 protrudes from the main shaft outer cylinder 10. As shown in FIG. 7, a non-thinned portion (a portion that has not been thinned) 11 is formed on the end surface of the main shaft outer cylinder 10 as a result. In this case, it is difficult to insert the plate 40 into the gap 13 between the bearing outer cylinder 10 and the outer ring 12A because the non-thinned portion 11 formed on the end surface of the main spindle outer cylinder 10 becomes an obstacle.
- the end face of the main shaft outer cylinder 10 around the outer ring 12A (that is, an insertion port for inserting the plate 40 between the bearing outer cylinder 10 and the outer ring 12A)
- the non-thinned portion 11 may be trimmed. Thereby, the plate 40 can be easily inserted into the gap 13 between the bearing outer cylinder 10 and the outer ring 12A.
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)
- Wind Motors (AREA)
- Mounting Of Bearings Or Others (AREA)
- Rolling Contact Bearings (AREA)
Abstract
Description
また、装置側部材と軸受の軌道輪との間にくさびピースを除く複数のピースを挿入した後、最後に残ったくさびピースを打ち込むことで、隣接するピースが密着するとともに、各ピースが装置側部材に押し付けられる。したがって、装置側部材と軸受の軌道輪との間の隙間をプレートで確実に埋めることができる。
また、プレート(樹脂材)の静摩擦係数を0.15以下にすることで、比較的低い荷重が軸受にかかった時点で、プレートと軌道輪との間の相対的な滑りを生じさせ、プレートに過度のせん断力がかかることを確実に防止できる。
そこで、上述のように、プレートの挿入前に、軸受軌道輪の周囲における装置側部材の端面を削り、プレート挿入口を予め形成しておくことで、装置側部材と軌道輪との間に補修用のプレートを容易に挿入することができる。
以下では、まず、本発明に係る軸受補修方法が適用される風力発電装置の一例について説明した後、本発明に係る軸受補修方法について詳述する。なお、ここでは、風力発電装置の一例としていわゆる同期発電機形式のものを説明するが、本発明に係る軸受補修方法は同期発電機形式の風力発電装置だけでなく、いわゆる誘導発電機形式を含む他の形式の風力発電装置にも適用できることはいうまでもない。
図1に示すように、風力発電装置1は、主として、基礎B上に立設された支柱2と、支柱2の上端に設置されたナセル4と、ナセル4に取り付けられたロータヘッド6と、ロータヘッド6に取り付けられた複数枚の回転翼8とで構成されている。
一方、発電機16の固定子19は、複数のコイルが互いに間隔を空けて並べられた構成を有する。固定子19は、発電機ロータ17に支持された回転子18に対向するように、固定系である支持部材15に固定されている。
Width Modulation)制御により、所定の周波数・電圧に制御されて送電系統に送られる。
このように、プレート(樹脂材)40の比摩耗量を1.0×10-9mm3/Nmm以下にすることで、主軸受12に高荷重がかかり、プレート40と外輪12Aとの間に滑りが発生した場合であっても、プレート40の摩耗量を抑えて、プレート40による充填状態を長期にわたって維持できる。
このように、プレート(樹脂材)40の静摩擦係数を0.15以下にすることで、比較的低い荷重が主軸受12にかかった時点で、プレート40と外輪12Aとの間の相対的な滑りを生じさせ、プレート40に過度のせん断力がかかることを確実に防止できる。
Claims (6)
- 風力発電装置の軸受を補修する方法であって、
前記軸受の軌道輪に固定される前記風力発電装置の構成部材と、前記軸受の前記軌道輪との間にプレートを挿入する工程と、
前記風力発電装置の前記構成部材に前記プレートを固定する工程とを備え、
前記プレートと前記軸受の前記軌道輪との間は滑りが許容されていることを特徴とする風力発電装置の軸受補修方法。 - 前記プレートは、くさびピースを含む複数のピースに分割されており、
前記プレートを挿入する工程では、前記くさびピースを除く前記複数のピースを前記風力発電装置の前記構成部材と前記軸受の前記軌道輪との間に挿入した後に、前記くさびピースを打ち込むことを特徴とする請求項1に記載の風力発電装置の軸受補修方法。 - 前記プレートは、比摩耗量が1.0×10-9mm3/Nmm以下であり、静摩擦係数が0.15以下である樹脂材からなることを特徴とする請求項1に記載の風力発電装置の軸受補修方法。
- 前記プレートを挿入する工程の前に、前記プレートを前記構成部材と前記軌道輪との間に挿入するための挿入口が形成されるように、前記軌道輪の周囲における前記構成部材の端面を削る工程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軸受補修方法。
- 前記構成部材は前記風力発電装置の主軸外筒であり、
前記軸受は、前記主軸外筒に外輪が固定された主軸受であることを特徴とする請求項1に記載の風力発電装置の軸受補修方法。 - 前記主軸受は、前記風力発電装置のナセル台板から切り離されていることを特徴とする請求項1に記載の風力発電装置の軸受補修方法。
Priority Applications (9)
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EP10703606A EP2381097A1 (en) | 2010-02-10 | 2010-02-10 | Method for repairing bearing of wind power generating device |
JP2010506466A JP5031090B2 (ja) | 2010-02-10 | 2010-02-10 | 風力発電装置の軸受補修方法 |
BRPI1000007A BRPI1000007A2 (pt) | 2010-02-10 | 2010-02-10 | método de reparar mancal de gerador de turbina de vento |
KR1020107008367A KR101192475B1 (ko) | 2010-02-10 | 2010-02-10 | 풍력 발전 장치의 베어링 보수 방법 |
CA2693746A CA2693746C (en) | 2010-02-10 | 2010-02-10 | Method of repairing bearing of wind turbine generator |
CN201080000699.1A CN102216610B (zh) | 2010-02-10 | 2010-02-10 | 修理风力涡轮发电机的轴承的方法 |
PCT/JP2010/051933 WO2011099120A1 (ja) | 2010-02-10 | 2010-02-10 | 風力発電装置の軸受補修方法 |
US12/675,006 US8341840B2 (en) | 2010-02-10 | 2010-02-10 | Method of repairing bearing of wind turbine generator |
AU2010201617A AU2010201617B1 (en) | 2010-02-10 | 2010-02-10 | Method of repairing bearing of wind turbine generator |
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PCT/JP2010/051933 WO2011099120A1 (ja) | 2010-02-10 | 2010-02-10 | 風力発電装置の軸受補修方法 |
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EP (1) | EP2381097A1 (ja) |
JP (1) | JP5031090B2 (ja) |
KR (1) | KR101192475B1 (ja) |
CN (1) | CN102216610B (ja) |
AU (1) | AU2010201617B1 (ja) |
BR (1) | BRPI1000007A2 (ja) |
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EP2381097A1 (en) | 2011-10-26 |
KR20110120196A (ko) | 2011-11-03 |
JP5031090B2 (ja) | 2012-09-19 |
US8341840B2 (en) | 2013-01-01 |
CN102216610A (zh) | 2011-10-12 |
CN102216610B (zh) | 2014-08-20 |
AU2010201617B1 (en) | 2011-07-28 |
KR101192475B1 (ko) | 2012-10-17 |
JPWO2011099120A1 (ja) | 2013-06-13 |
CA2693746A1 (en) | 2011-08-10 |
BRPI1000007A2 (pt) | 2017-01-10 |
CA2693746C (en) | 2012-05-29 |
US20120055024A1 (en) | 2012-03-08 |
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