WO2010047064A1 - Mécanisme de rotation de nacelle - Google Patents

Mécanisme de rotation de nacelle Download PDF

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Publication number
WO2010047064A1
WO2010047064A1 PCT/JP2009/005391 JP2009005391W WO2010047064A1 WO 2010047064 A1 WO2010047064 A1 WO 2010047064A1 JP 2009005391 W JP2009005391 W JP 2009005391W WO 2010047064 A1 WO2010047064 A1 WO 2010047064A1
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WO
WIPO (PCT)
Prior art keywords
nacelle
output shaft
electric motor
yaw
gear
Prior art date
Application number
PCT/JP2009/005391
Other languages
English (en)
Japanese (ja)
Inventor
林慎吾
児玉晴夫
Original Assignee
ナブテスコ株式会社
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Filing date
Publication date
Application filed by ナブテスコ株式会社 filed Critical ナブテスコ株式会社
Publication of WO2010047064A1 publication Critical patent/WO2010047064A1/fr

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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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D9/00—Couplings with safety member for disconnecting, e.g. breaking or melting member
    • F16D9/06—Couplings with safety member for disconnecting, e.g. breaking or melting member by breaking due to shear stress
    • F16D9/08—Couplings with safety member for disconnecting, e.g. breaking or melting member by breaking due to shear stress over a single area encircling the axis of rotation, e.g. shear necks on shafts
    • 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
    • F03D7/00—Controlling wind motors 
    • F03D7/02—Controlling wind motors  the wind motors having rotation axis substantially parallel to the air flow entering the rotor
    • F03D7/0204—Controlling wind motors  the wind motors having rotation axis substantially parallel to the air flow entering the rotor for orientation in relation to wind direction
    • 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
    • F05B2260/90—Braking
    • F05B2260/902—Braking using frictional mechanical forces
    • 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 nacelle turning mechanism for turning a nacelle in a tower of a windmill.
  • a windmill used as a wind power generator a windmill provided with a nacelle provided at the upper part of a tower to which blades (blades) are attached and a generator or the like is arranged is often used.
  • a nacelle turning mechanism for turning the nacelle according to the wind direction is provided.
  • a ring gear fixed to the upper part of the tower of the windmill a yaw drive device that has an electric motor to turn the nacelle, and a ring fixed to the output shaft of the yaw drive device
  • a nacelle turning mechanism having a pinion meshing with a gear is disclosed.
  • the nacelle turning mechanism is provided with a brake mechanism for stopping the output shafts of the respective motors by simultaneously driving the respective motors of the two yaw driving devices in opposite rotation directions.
  • a plurality of yaw driving devices are provided, and the nacelle turning operation is performed by the operation of the plurality of yaw driving devices.
  • the brake mechanism When the brake mechanism is activated, the output shaft of each electric motor in the plurality of yaw drive devices is stopped.
  • the brake mechanism when an external force due to wind acts on the nacelle of the windmill, if the brake mechanism is activated, the force acts on the yaw drive device in a state where the output shaft of the motor is stopped, and the nacelle turns If it is medium, a reverse force may act on the yaw drive.
  • the output shaft of the motor of one yaw drive device may be locked due to some trouble, or the brake of only one yaw drive device may not be released due to an abnormality in the control system or the like.
  • the output shaft of the electric motor is fixed in this way, an excessive external force is applied to one yaw drive device due to the force of another yaw drive device, resulting in breakage that is difficult to continue using and requires replacement.
  • the yaw function of the wind power generator is lost and the power generation function is lost.
  • a nacelle turning mechanism provided with a plurality of yaw driving devices in view of the above circumstances, an excessive external force is generated by one yaw driving device due to wind or the output shaft of the motor being fixed. It is an object of the present invention to provide a nacelle turning mechanism that can prevent the yaw driving device from being destroyed even when it acts on the nacelle.
  • a nacelle turning mechanism for achieving the above object includes a ring gear fixed to a tower of a windmill, a nacelle arranged rotatably with respect to the tower of the windmill, and fixed to the nacelle.
  • a plurality of yaw driving devices that have an electric motor and rotate the nacelle with respect to a tower of a windmill; a brake mechanism that stops an output shaft of the electric motor; and an output shaft of the yaw driving device that is fixed to the ring gear.
  • a meshing pinion for a gear fixed to a tower of a windmill.
  • the nacelle turning mechanism according to the first aspect of the present invention is provided in a driving force transmission path, which is a path through which driving force is transmitted from the output shaft of the electric motor to the pinion, and when a torque of a predetermined magnitude or more is applied. And a cutting mechanism for cutting off the connection of the driving force transmission path.
  • the external force due to the wind acts on the nacelle with the variation in meshing between each pinion and the ring gear, and the external force is concentrated only on one yaw driving device.
  • the cutting mechanism is actuated when a torque of a predetermined magnitude or larger acts on the driving force transmission path.
  • the driving force transmission path is caused by the force of another yaw driving device. A torque of a predetermined magnitude or more acts to operate the cutting mechanism.
  • the drive force transmission path is disconnected and no force is transmitted. Then, with the part cut by the cutting mechanism as a boundary, the pinion side portion connected to the pinion is driven so as to idle (rotate) with respect to the motor side portion. For this reason, the yaw driving device is prevented from being damaged because it is difficult to continue using the yaw driving device and needs to be replaced.
  • the nacelle turning mechanism provided with a plurality of yaw driving devices, when an excessive external force acts on one yaw driving device due to wind or the output shaft of the electric motor being fixed.
  • the yaw drive device can be prevented from being destroyed.
  • the nacelle turning mechanism according to the second invention is the nacelle turning mechanism according to the first invention, wherein the cutting mechanism is provided on an output shaft of the electric motor.
  • the cutting mechanism is provided on the output shaft of the electric motor where the small torque acts on the driving force transmission path, a small cutting mechanism can be easily realized.
  • the cutting mechanism is considerably small by being provided on the output shaft of the electric motor with a small torque compared to the case where the cutting mechanism is provided in the reduction gear. Can be realized.
  • a nacelle turning mechanism is the nacelle turning mechanism according to the first or second aspect, wherein the cutting mechanism is provided as a notch formed in the output shaft of the electric motor.
  • the cutting mechanism is provided as a notch in the output shaft of the electric motor, the cutting mechanism can be easily formed without adding additional components. Thereby, a cutting mechanism can be easily provided at low cost.
  • the nacelle turning mechanism according to a fourth aspect of the present invention is the nacelle turning mechanism according to the second aspect or the third aspect, wherein the yaw driving device is connected to the output shaft of the electric motor and receives a driving force.
  • a shaft a case in which internal teeth are arranged on the inner periphery, an external gear provided with external teeth meshing with the internal teeth, a crank shaft for rotating the external gear eccentrically, and one end of the crank shaft And a carrier on which the output shaft of the yaw driving device is fixed.
  • the eccentric type speed reducer of the yaw drive device may be destroyed.
  • it will be in the state by which the transmission of the force between the reduction gear input shafts of an eccentric type reduction gear is blocked
  • the eccentric speed reducer of the yaw drive device is not damaged, the eccentric speed reducer can be protected as it is, and it is small and high by simply restoring the cutting mechanism provided on the output shaft of the motor.
  • Use as an output specification yaw drive device can be maintained as it is.
  • the nacelle turning mechanism provided with a plurality of yaw driving devices, even when an excessive external force acts on one yaw driving device due to wind or the output shaft of the electric motor being fixed. It is possible to prevent the yaw drive device from being destroyed.
  • FIG. 4 is an enlarged cross-sectional view illustrating a part of the yaw driving device illustrated in FIG. 3.
  • FIG. 4 is an enlarged cross-sectional view illustrating a part of the yaw driving device illustrated in FIG. 3.
  • FIG. 1 is a schematic diagram for explaining an outline of a nacelle turning mechanism 1 according to an embodiment of the present invention and a windmill 101 to which the nacelle turning mechanism 1 is applied.
  • the windmill 101 includes a tower 102, blades 103, a nacelle turning mechanism 1, and the like.
  • the tower 102 is installed so as to extend vertically upward from the ground, and a plurality of (three in this embodiment) blades 103 extending radially at equal angles are rotatably attached to the upper portion of the tower 102.
  • a nacelle turning mechanism 1 is arranged.
  • the nacelle turning mechanism 1 includes a nacelle 2, a ring gear 3, a yaw driving device 4, a brake mechanism 5, a pinion 6 (see FIG. 2), and the like.
  • FIG. 2 is a plan view schematically showing a state in which a part of the nacelle 2 is viewed from above.
  • elements other than the ring gear 3 and the yaw driving device 4 in the nacelle 2 are omitted.
  • the nacelle 2 shown in FIGS. 1 and 2 is disposed so as to be rotatable with respect to the tower 102, and is installed so as to turn in a substantially horizontal plane by the yaw driving device 4.
  • a power transmission shaft 61 Inside the nacelle 2 are a power transmission shaft 61, a speed increaser 62, a brake device 63 for the power transmission shaft 61, a generator 64, a transformer 65, a yaw drive device 4, a brake mechanism 5 for the yaw drive device 4, A pinion 6 and the like are arranged.
  • the power transmission shaft 61 is connected to the blade 103 via a hub, and the power transmission shaft 61 also rotates when the blade 103 is rotated by wind power. Then, the rotational driving force of the power transmission shaft 61 is increased in speed by the speed increaser 62 and is appropriately adjusted by the brake device 63 and input to the generator 64.
  • the ring gear 3 is fixed to the upper portion of the tower 102, and teeth that mesh with the pinion 6 are provided on the inner periphery.
  • the teeth of the ring gear 3 can be provided not only on the inner periphery but also on the outer periphery.
  • FIG. 3 shows a front view including a partial cross section of the yaw driving device 4.
  • the yaw driving device 4 includes an electric motor 7 and an eccentric type speed reducer 8, and is provided as a mechanism for turning the nacelle 2 with respect to the tower 102.
  • a plurality of yaw driving devices 4 are provided in the nacelle 2 so as to be arranged along the inner periphery of the ring gear 3 (four in this embodiment). It is fixed to the nacelle 2 via bolts (not shown).
  • the brake mechanism 5 shown in FIG. 1 is attached to each motor 7, and is provided as a friction brake for stopping the output shaft 7a (see FIG. 3) of each motor 7.
  • the pinion 6 shown in FIGS. 2 and 3 is fixed to the output shaft 14 of each yaw driving device 4 by spline coupling. Each pinion 6 is arranged so as to mesh with the inner peripheral teeth of the ring gear 3.
  • the yaw driving device 4 is configured by connecting an electric motor 7 and an eccentric speed reducer 8, and the pinion 6 is fixed to the output shaft 14 as described above.
  • the electric motor 7 of the yaw drive device 4 is attached to the case 11 of the eccentric speed reducer 8, and the speed reducer input shaft 19 of the eccentric speed reducer 8 is connected to the end of the output shaft 7a.
  • FIG. 4 is an enlarged cross-sectional view showing the end portion of the output shaft 7a of the electric motor 7 in FIG. 3 and the vicinity thereof.
  • the output shaft 7a shown in FIGS. 3 and 4 is connected to the speed reducer input shaft 19 by key combination via the key 20.
  • the output shaft 7a is formed with a notch 21 that is notched so as to have a smaller diameter at the midway portion protruding into the case 11 of the eccentric speed reducer 8 than the other portions.
  • the notch 21 is formed in the output shaft 7a by being cut out so as to extend in the circumferential direction as a groove having a cross section that is tapered. Further, the notch 21 is provided in a driving force transmission path that is a path through which the driving force is transmitted from the output shaft 7a to the pinion 6, and when the torque of a predetermined magnitude or more is applied, A cutting mechanism for disconnecting the connection is configured.
  • the diameter dimension of the notch portion 21 is set so that the output shaft 7a is cut by breaking at the notch portion 21 formed as a small-diameter portion when a torque of a predetermined magnitude or larger is applied. ing.
  • the cutting mechanism that disconnects the connection of the driving force transmission path is provided as the notch portion 21 on the output shaft 7 a of the electric motor 7.
  • the eccentric speed reducer 8 includes a case 11, a pin inner tooth 22, a speed reducer input shaft 19, a front speed reducing portion 12, a rear speed reducing portion 13, an output shaft 14, and the like.
  • the output shaft 14 of the eccentric speed reducer 8 also constitutes the output shaft 14 of the yaw drive device 4.
  • the eccentric speed reducer 8 is provided with a pinion 6 on an output shaft 14 positioned so as to protrude from the case 11 on one end side disposed on the lower side, and on the other end side disposed on the upper side with respect to the case 11.
  • An electric motor 7 is attached.
  • the rotational force input from the electric motor 7 disposed on the upper side is decelerated via the speed reducer input shaft 19, the front stage speed reducer 12, and the rear stage speed reducer 13 disposed in the case 11. And transmitted to the pinion 6 attached to the output shaft 14. Then, the eccentric speed reducer 8 is operated by the driving force from the electric motor 7 and the output shaft 14 rotates, so that the yaw driving device 4 moves along the inner periphery of the ring gear 3 and the tower 102 is moved.
  • the nacelle 2 turns.
  • the lower output side where the output shaft 14 is arranged is one end side
  • the upper input side where the electric motor 7 is arranged is the other end side. .
  • the case 11 of the eccentric speed reducer 8 includes a cylindrical first case portion 11a and a second case portion 11b disposed on the other end side of the first case portion 11a. The edges are connected with bolts.
  • the case 11 has an opening at one end (the end of the first case 11a), and the motor 7 is fixed to the other end (the end of the second case 11b) as described above.
  • the case 11 houses a reduction gear input shaft 19, a front speed reduction portion 12, a rear speed reduction portion 13, and the like.
  • the speed reducer input shaft 19, the front speed reduction portion 12, the rear speed reduction portion 13, and the output shaft 14 are
  • the yaw driving device 4 is arranged in series along the axial direction which is the direction of the rotation center line P (illustrated by a one-dot chain line in FIG. 1).
  • the driving force transmission path in the yaw driving device 4 is such that the driving force from the output shaft 7a of the electric motor 7 to the pinion 6 through the speed reducer input shaft 19, the front speed reducing portion 12, the rear speed reducing portion 13, and the output shaft 14 is. Configured as a route to be transmitted.
  • FIG. 5 is an enlarged cross-sectional view of the rear stage deceleration unit 13 and its vicinity in FIG.
  • a plurality of pin internal teeth (internal teeth in the present embodiment) 22 are provided and attached to a pin groove formed on the inner periphery of the first case portion 11a. It is arranged on the inner periphery of the case 11.
  • the pin internal teeth 22 (in FIG. 3 and FIG. 4, the external shape is not shown in cross section) is formed as a pin-shaped member (round bar-shaped member) and arranged so that the longitudinal direction thereof is parallel to the rotation center line P. In addition, they are arranged at equal intervals along the circumferential direction on the inner periphery of the case 11 and are configured to mesh with external teeth 31 of an external gear 28 described later.
  • the speed reducer input shaft 19 constituting the input shaft in the eccentric speed reducer 8 is connected to the output shaft 7 a of the electric motor 7 on the other end side as described above, and driven from the electric motor 7. Force is input.
  • a gear is formed on the outer periphery on one end side of the speed reducer input shaft 19, and is configured to transmit a driving force to the preceding speed reduction unit 12.
  • the front stage speed reduction unit 12 includes a first stage planetary gear mechanism to which the rotational driving force from the speed reducer input shaft 19 is transmitted, and an input gear 15.
  • a planetary carrier 16, a planetary gear 17, and an internal gear 18 are provided.
  • a plurality of planetary gears 17 are arranged around the speed reducer input shaft 19 and mesh with a gear on one end side of the speed reducer input shaft 19, and the radial direction of the eccentric speed reducer 8 with respect to the speed reducer input shaft 19 (rotation center). (The direction perpendicular to the line P).
  • the planet carrier 16 is formed as a planetary frame that rotatably holds the plurality of planetary gears 17 at positions of equal angles along the circumferential direction around the speed reducer input shaft 19 and performs a revolving operation.
  • the internal gear 18 is provided as a ring-shaped gear in which teeth are formed on the inner periphery and the planetary gear 17 meshes, and is fixed to the second case portion 11b.
  • the input gear 15 is provided as a shaft-shaped gear member and is disposed on the rotation center line P.
  • the input gear 15 has a gear portion 15 a that meshes with a spur gear 49 described later on one end side, and a spline that is connected to the inner peripheral portion of the planet carrier 16 on the other end side.
  • the post-stage reduction unit 13 includes a spur gear 49, a crankshaft 23, a base carrier 25, an end carrier 26, a support 27, an external gear 28, and the like.
  • a plurality of spur gears 49 are arranged around the input gear 15 so as to mesh with the gear portion 15 a of the input gear 15, and the radial direction of the eccentric speed reducer 8 with respect to the input gear 15. Is located.
  • the spur gear 49 is formed with a through hole in the central portion, and is fixed to the other end side of the crankshaft 23 by spline coupling in the through hole.
  • crankshafts 23 are arranged at equal angular positions along the circumferential direction around the rotation center line P, and the axial direction of the crankshaft 23 rotates. They are arranged so as to be parallel to the center line P.
  • Each of the crankshafts 23 (in FIG. 3 and FIG. 5, the outer shape is not shown in cross section) is disposed so as to pass through the crank holes 30 formed in the external gear 28, and rotates to rotate the external gear 28. It is provided as a shaft member that rotates the shaft eccentrically. And the crankshaft 23 will perform a revolution operation
  • crankshaft 23 is formed with a first eccentric portion 23a, a second eccentric portion 23b, a first shaft portion 23c, and a second shaft portion 23d, and the first shaft portion 23c and the first eccentric portion are formed from one end side.
  • 23a, the second eccentric portion 23b, and the second shaft portion 23d are provided in series in this order.
  • the first eccentric portion 23a and the second eccentric portion 23b are formed such that a cross section perpendicular to the axial direction is a circular cross section, and each center position is provided to be eccentric with respect to the rotation center line of the crankshaft 23. ing.
  • the first eccentric portion 23 a and the second eccentric portion 23 b are disposed in the crank hole 30 of the external gear 28.
  • crankshaft bearings (34, 35) configured as roller bearings. That is, the crankshaft bearing 34 holds the first shaft portion 23 c on one end side of the crankshaft 23 so as to be rotatable with respect to the base carrier 25. On the other hand, the crankshaft bearing 35 holds the second shaft portion 23 d on the other end side of the crankshaft 23 so as to be rotatable with respect to the end carrier 26. Note that a spur gear 49 is fixed to the second shaft portion 23d at an end portion protruding from the crankshaft bearing 35 to the other end side.
  • the external gear 28 includes a first external gear 28 a and a second external gear 28 b that are accommodated in the case 11 in a state of being arranged in parallel.
  • the first external gear 28a and the second external gear 28b are respectively formed with a crank hole 30 through which the crankshaft 23 passes and a column through hole 48 through which the column 27 passes.
  • the first external gear 28a and the second external gear 28b are arranged so that the positions of the crank hole 30 and the column through hole 48 correspond to each other in the direction parallel to the rotation center line P.
  • the crank hole 30 of the external gear 28 (28a, 28b) is formed as a circular hole, and a plurality of (in the present embodiment, at the same angle position along the circumferential direction of the external gear 28 corresponding to the crankshaft 23). 3) Arranged.
  • the column through holes 48 are formed as holes corresponding to the cross-sectional shape of the column 27, and a plurality (three in this embodiment) are arranged at equal angle positions along the circumferential direction of the external gear 28 corresponding to the columns 27.
  • the support through holes 48 are alternately formed with the crank holes 30 in the circumferential direction of the external gear 28.
  • pillar 27 has penetrated the support
  • external teeth 31 that mesh with the pin internal teeth 22 are provided on the outer circumferences of the first external gear 28a and the second external gear 28b.
  • the number of teeth of the external teeth 31 of the first external gear 28 a and the second external gear 28 b is provided to be one less than the number of teeth of the pin internal teeth 22. For this reason, each time the crankshaft 23 rotates, the meshing between the meshing external teeth 31 and the pin internal teeth 22 is shifted, and the external gears 28 (28a, 28b) are eccentrically rotated.
  • the difference in the number of teeth between the external teeth 31 and the pin internal teeth 22 may be plural.
  • the external gear 28 rotatably holds the crankshaft 23 in the crank hole 30 via external tooth bearings (53, 54).
  • the external tooth bearing 53 holds the first eccentric portion 23a with respect to the first external gear 28a, and the external tooth bearing 54 holds the second eccentric portion 23b with respect to the second external gear 28b.
  • the external tooth bearings (53, 54) are each provided with a plurality of roller members configured as needle roller members or cylindrical roller members.
  • the base carrier 25 and the end carrier 26 are rotatably held on one end side and the other end side of the crankshaft 23 via the crankshaft bearings (34, 35) and the output shaft 14 is fixed.
  • the base carrier 25 shown in FIGS. 3 and 5 has an output shaft 14 integrally formed at one end thereof and disposed in the case 11 (the output shaft 14 is integrally formed and fixed to the base carrier 25). Have been).
  • the base carrier 25 has a crank holding hole 50 formed on the other end side thereof, and the crank holding hole 50 holds one end side of each crankshaft 23 rotatably at the first shaft portion 23c via the crankshaft bearing 34. is doing.
  • the crank holding hole 50 is formed at a position of an equal angle along the circumferential direction around the rotation center line P. Further, the base carrier 25 is rotatably held on the outer peripheral side with respect to the inner peripheral side of the first case portion 11a via the roller bearing 36. A positioning member 44 provided as a ring-shaped member disposed along the outer periphery of the base carrier 25 is fixed. The roller bearing 36 is disposed with one end engaged with the positioning member 44 and the other end engaged with one end of the first case portion 11a.
  • the end carrier 26 is connected to the base carrier 25 via a support column 27 and is provided as a disk-shaped member.
  • the end carrier 26 is rotatably held with respect to the inner peripheral side of the case 11 via a ball bearing 37 on the outer peripheral side thereof.
  • the ball bearing 37 has one end engaged with the other end of the first case 11 a of the case 11, and the other end engaged with the edge 26 a protruding in a flange shape on the other end of the end carrier 26. It is arranged in the state.
  • the end carrier 26 is formed with a crank through-hole 43 in which the second shaft portion 23d on the other end side of the crankshaft 23 is disposed at an equal angle position along the circumferential direction with the rotation center line P as the center. Has been.
  • the crank through-hole 43 the other end side of the crankshaft 23 is rotatably held by a second shaft portion 23d via a crankshaft bearing 35.
  • the support column 27 is disposed between the base carrier 25 and the end carrier 26, and is provided as a columnar portion that connects the base carrier 25 and the end carrier 26.
  • a plurality (three in this embodiment) of the support columns 27 are arranged at equal angular positions along the circumferential direction around the rotation center line P, and are arranged so that the axial direction thereof is parallel to the rotation center line P. ing.
  • pillar 27 and the crankshaft 23 are alternately arrange
  • Each support column 27 is formed integrally with the base carrier 25 and is provided so as to protrude on the other end side of the base carrier 25.
  • the support column 27 is formed with a support pin hole 51 that opens to the other end side of the end carrier 26 and extends to the support column 27 and into which a round bar (columnar) support pin 40 is press-fitted. As the support pins 40 are press-fitted into the support pin holes 51, the circumferential positions of the base carrier 25 and the end carrier 26 are matched.
  • the support column 27 is formed with a support bolt hole 47 which opens to the other end side of the end carrier 26 and extends to the base carrier 25 and into which a support bolt 29 shown by a broken line in the drawing is inserted.
  • An internal thread portion is formed on the back side of the support bolt hole 47.
  • the column bolt 29 has a screw portion formed as a male screw portion on one end side and a head portion on which the hexagonal hole for tightening is provided on the other end side.
  • the column bolt 29 is configured to couple the end carrier 26 and the base carrier 25 via the column 27 by screwing the screw portion with the female screw portion of the column bolt hole 47.
  • the positioning member 44 fixed to the base carrier 25 and the end carrier 26 are rolled by the tightening force generated at that time.
  • the case 11 is clamped via the bearing 36 and the ball bearing 37 (held so as to be clamped). By this clamping, the base carrier 25 and the end carrier 26 are held rotatably with respect to the case 11.
  • the nacelle turning mechanism 1 is configured such that a control device (not shown) issues a turning command for turning the nacelle 2 in accordance with the wind direction based on the detection result of an anemometer (not shown), for example, and the electric motor 7 of the yaw driving device 4. It operates by operating.
  • a control device (not shown) issues a turning command for turning the nacelle 2 in accordance with the wind direction based on the detection result of an anemometer (not shown), for example, and the electric motor 7 of the yaw driving device 4. It operates by operating.
  • the speed reducer input shaft 19 connected to the output shaft 7a rotates
  • the planetary gear 17 that meshes with the speed reducer input shaft 19 rotates and revolves while meshing with the internal gear 18.
  • the planet carrier 16 rotates and the input gear 15 connected to the planet carrier 16 rotates.
  • each crankshaft 23 rotates together with each spur gear 49 that meshes with the input gear 15, and the first and second eccentric portions (23a, 23b) also rotate.
  • a load acts on the external gears 28 (28a, 28b) from the first and second eccentric portions (23a, 23b), and the external gears 28 (28a, 28b) are pin internal teeth 22. And rotate eccentrically so as to swing while shifting the mesh.
  • the crankshaft 23 rotated and held with respect to the external gear 28 rotates around the rotation center line P while rotating.
  • the output shaft 14 rotates together with the base carrier 25 and the end carrier 26 that are connected by the column 27 and rotatably hold the crankshaft 23, and a large torque is output from the pinion 6. It will be. Then, the rotation of the nacelle 2 to which the plurality of yaw driving devices 4 are attached is performed by rotating the pinion 6 while meshing with the ring gear 3.
  • the operation of the electric motor 7 is stopped based on a command from the control device, the brake mechanism 5 is activated, and the nacelle 2 is stopped.
  • the output shaft 7a of the electric motor 7 is broken at the notch 21, and the notch 21 as a cutting mechanism is activated. For this reason, in the yaw drive device 4, only the notch 21 which is a cutting mechanism provided in the driving force transmission path is cut, and all elements other than the output shaft 7a are protected.
  • the nacelle turning mechanism 1 According to the nacelle turning mechanism 1 described above, during the turning operation or the stop of the nacelle 2, an external force due to wind acts on the nacelle 2 in a state where the meshing between the pinions 6 and the ring gear 3 varies, and the external force is When acting on only one yaw driving device 4 in a concentrated manner, the cutting mechanism provided as the notch portion 21 is activated when a torque of a predetermined magnitude or more acts on the driving force transmission path. Further, even when the output shaft 7a of the electric motor 7 is fixed due to the occurrence of a malfunction or the like, the yaw driving device 4 in which the output shaft 7a of the electric motor 7 is fixed has the force of the other yaw driving device 4.
  • a torque of a predetermined magnitude or more acts on the driving force transmission path, and the cutting mechanism (notch portion 21) operates.
  • the drive force transmission path is disconnected and no force is transmitted.
  • the pinion-side portion connected to the pinion 6 is driven so as to idle with respect to the motor-side portion, with the location separated by the cutting mechanism as a boundary. For this reason, the yaw driving device 4 is prevented from being broken without being damaged such that the continuation of use is difficult and needs to be replaced.
  • the nacelle turning mechanism 1 provided with the plurality of yaw driving devices 4, an excessive external force is driven by one yaw drive due to wind or the output shaft 7 a of the electric motor 7 being fixed. Even when acting on the device, the yaw driving device 4 can be prevented from being destroyed.
  • the cutting mechanism since the cutting mechanism is provided on the output shaft 7a of the electric motor 7 where the small torque acts on the driving force transmission path, a small cutting mechanism can be easily realized.
  • a considerably small cutting mechanism can be realized by providing the output shaft 7a of the electric motor 7 having a small torque as compared with the case where the cutting mechanism is provided in the eccentric speed reducer 8 connected to the electric motor 7.
  • the cutting mechanism since the cutting mechanism is provided as the notch portion 21 in the output shaft 7a of the electric motor 7, the cutting mechanism can be easily formed without adding additional components. Thereby, a cutting mechanism can be easily provided at low cost.
  • the eccentric speed reducer 8 having a large reduction ratio is provided in the yaw driving device 4, the output torque of the yaw driving device 4 can be improved and the size can be reduced. According to the nacelle turning mechanism 1, even if an excessive external force acts on one yaw driving device 4 due to wind or the output shaft 7a of the electric motor 7 being fixed, the output of the electric motor 7 The operation of the cutting mechanism provided on the shaft 7a is in a state where the transmission of force to and from the eccentric speed reducer 8 is prevented.
  • the eccentric speed reducer 8 of the yaw drive device 4 is not damaged, and the eccentric speed reducer 8 can be protected as it is, and only the cutting mechanism provided on the output shaft 7a of the electric motor 7 is restored. Therefore, the use as a small and high-output specification yaw driving device 4 can be maintained as it is.
  • the yaw drive device may be provided with a speed reducer other than the eccentric speed reducer or an eccentric speed reducer having a different form from the present embodiment.
  • the reduction gear may not be provided in the yaw drive device.
  • a cutting mechanism may be provided in a portion other than the output shaft of the electric motor in the driving force transmission path.
  • the cutting mechanism may be provided as a notch part of shapes other than the shape illustrated in this embodiment.
  • the cutting mechanism may be provided as forms other than a notch part.
  • the present invention can be widely applied as a nacelle turning mechanism for turning the nacelle in a tower of a windmill.

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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)

Abstract

L’invention concerne un mécanisme de rotation de nacelle doté de dispositifs d’entraînement de lacet, selon lequel, même si une force externe excessive agit sur l’un des dispositifs d’entraînement de lacet à cause du vent ou à cause de l’arbre de sortie d'un moteur électrique bloqué, le dispositif d'entraînement de lacet n'est pas détruit. Un mécanisme de rotation de nacelle (1) est doté d’une couronne (3) fixée sur une tour (102) d'un aéromoteur (101), d’une nacelle (2), de dispositifs d'entraînement de lacet (4) fixés sur la nacelle (2) et comprenant chacun un moteur électrique (7), de mécanismes de freinage (5) adaptés chacun à stopper un arbre de sortie (7a) de chaque moteur électrique (7), et de pignons (6) fixés chacun sur un arbre de sortie (14) de chaque dispositif d'entraînement de lacet (4) et s'engrenant avec la couronne (3). Un mécanisme de déconnexion (21) disposé sur un itinéraire de transmission de force d’entraînement menant de l’arbre de sortie (7a) de chaque moteur électrique (7) vers le pignon (6) déconnecte la connexion dans l’itinéraire de transmission de force d’entraînement lorsqu’un couple supérieur à une magnitude prédéterminée agit sur l'itinéraire de transmission de force d'entraînement.
PCT/JP2009/005391 2008-10-22 2009-10-15 Mécanisme de rotation de nacelle WO2010047064A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2008272420 2008-10-22
JP2008-272420 2008-10-22

Publications (1)

Publication Number Publication Date
WO2010047064A1 true WO2010047064A1 (fr) 2010-04-29

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013047505A (ja) * 2011-08-29 2013-03-07 Sumitomo Heavy Ind Ltd 風力発電設備のヨー駆動システムに使用されるヨー減速装置およびヨー駆動システム
EP2574782A2 (fr) 2011-09-27 2013-04-03 Nabtesco Corporation Dispositif d'entraînement pour éoliennes
EP2708738A1 (fr) * 2012-09-12 2014-03-19 Alstom Wind, S.L.U. Éolienne
JP2015140777A (ja) * 2014-01-30 2015-08-03 株式会社日立製作所 風力発電装置
JP2018091309A (ja) * 2016-12-07 2018-06-14 ナブテスコ株式会社 風車駆動システム及び風車
CN111058993A (zh) * 2019-12-06 2020-04-24 中国矿业大学 一种直杆式的风电能量转换装置
EP3553309A4 (fr) * 2016-12-07 2020-07-29 Nabtesco Corporation Dispositif d'entraînement, unité de dispositif d'entraînement et éolienne
CN114278718A (zh) * 2021-12-30 2022-04-05 重庆齿轮箱有限责任公司 一种偏航齿轮箱

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5973584U (ja) * 1982-11-10 1984-05-18 三菱重工業株式会社 風車用ナセル駆動装置
JPS6155369A (ja) * 1984-08-28 1986-03-19 Matsushita Seiko Co Ltd 風車の方位可変装置
JP2001289149A (ja) * 2000-04-10 2001-10-19 Mitsubishi Heavy Ind Ltd 風力発電装置のヨー旋回駆動装置および風力発電装置のヨー旋回駆動制御方法
JP2004232500A (ja) * 2003-01-28 2004-08-19 Komatsu Ltd 風力発電設備のナセル旋回駆動装置、及びその運転方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5973584U (ja) * 1982-11-10 1984-05-18 三菱重工業株式会社 風車用ナセル駆動装置
JPS6155369A (ja) * 1984-08-28 1986-03-19 Matsushita Seiko Co Ltd 風車の方位可変装置
JP2001289149A (ja) * 2000-04-10 2001-10-19 Mitsubishi Heavy Ind Ltd 風力発電装置のヨー旋回駆動装置および風力発電装置のヨー旋回駆動制御方法
JP2004232500A (ja) * 2003-01-28 2004-08-19 Komatsu Ltd 風力発電設備のナセル旋回駆動装置、及びその運転方法

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013047505A (ja) * 2011-08-29 2013-03-07 Sumitomo Heavy Ind Ltd 風力発電設備のヨー駆動システムに使用されるヨー減速装置およびヨー駆動システム
EP2574782A2 (fr) 2011-09-27 2013-04-03 Nabtesco Corporation Dispositif d'entraînement pour éoliennes
EP2708738A1 (fr) * 2012-09-12 2014-03-19 Alstom Wind, S.L.U. Éolienne
JP2015140777A (ja) * 2014-01-30 2015-08-03 株式会社日立製作所 風力発電装置
JP2018091309A (ja) * 2016-12-07 2018-06-14 ナブテスコ株式会社 風車駆動システム及び風車
EP3553309A4 (fr) * 2016-12-07 2020-07-29 Nabtesco Corporation Dispositif d'entraînement, unité de dispositif d'entraînement et éolienne
US11047366B2 (en) 2016-12-07 2021-06-29 Nabtesco Corporation Driving device, driving device unit and wind turbine
CN111058993A (zh) * 2019-12-06 2020-04-24 中国矿业大学 一种直杆式的风电能量转换装置
CN114278718A (zh) * 2021-12-30 2022-04-05 重庆齿轮箱有限责任公司 一种偏航齿轮箱

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