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WO2019149327A1 - Couronne d'orientation à parties de dent interchangeables - Google Patents

Couronne d'orientation à parties de dent interchangeables Download PDF

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Publication number
WO2019149327A1
WO2019149327A1 PCT/DK2019/050007 DK2019050007W WO2019149327A1 WO 2019149327 A1 WO2019149327 A1 WO 2019149327A1 DK 2019050007 W DK2019050007 W DK 2019050007W WO 2019149327 A1 WO2019149327 A1 WO 2019149327A1
Authority
WO
WIPO (PCT)
Prior art keywords
yaw ring
yaw
tooth
ring
ring assembly
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
Application number
PCT/DK2019/050007
Other languages
English (en)
Inventor
Anton Bech
Aksel PETERSEN
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Vestas Wind Systems AS
Original Assignee
Vestas Wind Systems AS
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Vestas Wind Systems AS filed Critical Vestas Wind Systems AS
Publication of WO2019149327A1 publication Critical patent/WO2019149327A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • 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
    • 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
    • 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
    • F05B2260/50—Kinematic linkage, i.e. transmission of position
    • F05B2260/503—Kinematic linkage, i.e. transmission of position using gears
    • 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
    • F16H—GEARING
    • F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
    • F16H55/02—Toothed members; Worms
    • F16H55/12—Toothed members; Worms with body or rim assembled out of detachable parts
    • 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

  • Wind turbines norm ally comprise a tower and a nacelle, carrying a rotor with a set of wind turbine blades, mounted on top of the tower in such a manner that the nacelle is allowed to rotate relative to the tower in order to allow the wind turbine blades to be directed into the incom ing wind.
  • a yaw gear is arranged between the tower and the nacelle.
  • Such a yaw gear norm ally com prises a yaw ring with a large toothed rim and one or more drive units, each provided with a gear wheel which engages the teeth of the large toothed rim of the yaw ring.
  • the yaw ring is m ounted on the tower or on the nacelle.
  • the drive units are mounted on the nacelle, and in the case that the yaw ring is m ounted on the nacelle, the drive units are mounted on the tower.
  • the gear wheels of the drive units are rotated, this causes a relative movement between the yaw ring and the drive units, thereby causing the nacelle to rotate relative to the tower.
  • the yaw ring is provided as one large toothed ring, i.e. with the teeth form ed directly as an integral part of the yaw ring, and the yaw ring, including the teeth, being m anufactured in one piece. This is in order to ensure sufficient strength of the yaw ring to handle the loads occurring during rotation of the nacelle in the m anner described above.
  • the yaw rings need to be transported as one large item , and this requires special transporting equipm ent when the size of the yaw ring reaches a certain lim it, thereby significantly adding to the transporting costs. Finally, the entire yaw ring needs to be replaced if one tooth or a few teeth is/are broken, dam aged or worn out. This is difficult and expensive.
  • WO 2010/078944 A2 discloses a device for rotatably coupling two ring shaped elements. At least one of the two ring shaped elements com prises a plurality of recesses for receiving one drive pin each, said pins being parallel to the axis of rotation.
  • the pins can be engaged by a drive m echanism driving the relative movement of the two ring shaped elem ents. I n the case that one of the pins is broken, dam aged or worn it can be replaced without replacing the entire ring shaped element.
  • the invention provides a yaw ring assembly for a yaw gear of a wind turbine, the yaw ring assembly com prising :
  • the first aspect of the invention provides a yaw ring assembly for a yaw gear of a wind turbine.
  • the yaw gear of a wind turbine is a part which is arranged between the tower and the nacelle of the wind turbine, and which allows the nacelle to rotate relative to the tower in order to arrange the wind turbine blades in the direction of the incom ing wind.
  • the yaw ring assembly com prises a yaw ring and a plurality of independent tooth parts m ounted circumferentially on the yaw ring. Accordingly, the yaw ring with the plurality of tooth parts m ounted thereon form a full toothed gear ring which can be used as a yaw ring in a yaw gear, i.e. the teeth are arranged to engage teeth of a rotatable drive part used for driving the yawing m ovement of the nacelle.
  • the term‘tooth’ should be interpreted to mean an object having the shape of a conventional gear tooth.
  • the tooth comprises two surfaces arranged on opposite sides of the tooth.
  • the surfaces may have an involute shape, or any other suitable shape.
  • the surfaces are arranged to contact a driving or driven object, e.g. in the form of a gear tooth arranged on another gear wheel, in order to transfer torque there between.
  • the surfaces m ay be connected via a top land.
  • the teeth are m ounted on the yaw ring, rather than form ing an integral part thereof, it is possible to replace a single tooth part without dismantling the yaw gear and/or replacing the entire yaw ring. Furthermore, this can be done in a very easy m anner, since it only requires rem oving one of the independent tooth parts and m ounting another corresponding tooth part on the yaw ring.
  • a tooth part m ay comprise no m ore than one tooth, i.e. a single tooth.
  • a tooth part m ay comprise two or m ore teeth being m anufactured in one piece and m ounted as such on the yaw ring.
  • the yaw ring can be manufactured without the need for large equipment for form ing the teeth directly on the yaw ring.
  • the yaw ring may be m anufactured in a segmented m anner, m aking it easier to m anufacture and transport the yaw ring. I n this case the yaw ring can be assembled and the teeth mounted thereon at the site where the wind turbine in which the yaw gear is to be arranged is positioned.
  • Providing the yaw ring with a plurality of independent teeth instead of a plurality of pins as described in WO 2010/078944 A2 ensures that the resulting yaw ring assem bly functions in the sam e manner as a conventional yaw ring having the teeth form ed directly in the yaw ring.
  • This m e ans, inter alia, that the load distribution in the yaw ring assem bly is essentially as in a conventional yaw ring.
  • the plurality of tooth parts m ay be m ounted along an outer circumference or along an inner circumference of the yaw ring.
  • the teeth m ay be arranged to transfer loads from one tooth part to a
  • the yaw ring assem bly m ay further com prise a plurality of pins m ounted circumferentially on the yaw ring, interleaved with the tooth parts.
  • a plurality of tooth parts and pins are m ounted alternatingly along the circumference of the yaw ring.
  • the pins m ay be used for fixating the tooth parts with respect to the yaw ring, thereby preventing the tooth parts from falling out during operation.
  • this em bodim ent when loads are transferred from one tooth part to a neighbouring tooth part, this takes place via a pin.
  • At least one of the tooth parts m ay be provided with at least one recess arranged to receive a pin arranged adjacent to the tooth part.
  • the tooth parts may be m ounted on the yaw ring along a substantially radial direction, and the pins may subsequently be m ounted between the tooth parts along a direction which is substantially parallel to an axis of rotational sym metry defined by the yaw ring, i.e. substantially
  • the yaw ring m ay be provided with a plurality of holes, each being arranged for receiving a pin. According to this em bodim ent, the plurality of pins are mounted on the yaw ring by inserting each of them into one or m ore of the holes.
  • the tooth parts m ay be mounted on the yaw ring in abutment with each other. I n this case loads are transferred directly from one tooth part to a neighbouring tooth part.
  • the tooth parts m ay in this case, be fixed to the yaw ring in an alternative m anner, e.g. by m eans of protrusions on the tooth parts and corresponding recesses in the yaw ring, and retaining means arranged for retaining the protrusions in the recesses.
  • the yaw ring m ay define a U-shaped recess, and the tooth parts m ay be at least partially accom m odated in the U-shaped recess.
  • the yaw ring com prises an upper ring and a lower ring.
  • the upper ring and the lower ring are interconnected by a peripheral ring, form ing a‘bottom’ of the U- shape. I n the case that the tooth parts are mounted along an outer
  • the peripheral ring form s an inner circumference of the yaw ring
  • the peripheral ring in the case that the tooth parts are m ounted along an inner circumference of the yaw ring, the peripheral ring form s an outer circumference of the yaw ring.
  • At least one of the tooth parts m ay com prise a protruding portion being arranged to be received in a corresponding recess formed in the yaw ring in order to mount the tooth parts on the yaw ring.
  • the recess m ay be formed in the upper ring and/or in the lower ring.
  • the protruding portion of the tooth parts m ay extend along a direction which is substantially perpendicular to the radial direction.
  • At least one of the protruding portion(s) m ay extend along a direction which is substantially parallel to an axial direction defined by the yaw ring assem bly.
  • the term‘axial direction’ should be interpreted to mean a direction which is defined by an axis of rotation of the yaw ring assem bly. This axis also constitutes an axis of rotational sym m etry of the yaw ring assem bly.
  • one or m ore recesses m ay be form ed in the ‘bottom’ part of the U-shaped recess, and a corresponding radially extending protrusion may be formed on one or more of the tooth parts.
  • the tooth parts can be positioned accurately relative to each other along the circumference of the yaw ring, since a given tooth part m ust be positioned in such a m anner that its radially protruding portion is received in one of the recesses form ed in the‘bottom’ of the U-shaped recess.
  • the tooth parts may com prise two or more protruding portions, e.g. a radially extending protruding portion as well as one or more axially extending protruding portions.
  • a portion of at least one of the tooth parts may protrude outwards from an outer or an inner diameter defined by the yaw ring.
  • the portion of the tooth parts which protrudes outwards from the yaw ring form a toothed rim of the yaw ring.
  • the tooth parts may be
  • the yaw ring m ay comprise two or m ore yaw ring segm ents connected to each other to form the yaw ring.
  • the yaw ring is manufactured in sm aller segm ents which are subsequently assembled to form the yaw ring.
  • the segm ents can be transported individually to a relevant operating site, and the yaw ring can be assem bled on site. Thereby special transporting equipm ent is not required, and this provides a considerable reduction of the transporting costs.
  • the yaw ring may com prise an upper ring, a lower ring and a peripheral ring, as described above, and these three parts may be manufactured separately and subsequently assem bled.
  • each of the upper ring, the lower ring and the peripheral ring may comprise two or m ore segments. I n this case the segments of the upper ring, the lower ring and the peripheral ring may advantageously be assem bled in such a manner that the joints between segm ents of the rings are not coinciding. Thereby weak points of the resulting yaw ring assem bly are avoided, and the strength of the yaw ring assembly is im proved.
  • the plurality of tooth parts may form a full toothed rim of the yaw ring assem bly.
  • the toothed rim m ay be arranged along an outer circumference or along an inner circumference of the yaw ring.
  • the invention provides a yaw gear for a wind turbine, the yaw gear com prising:
  • a rotatable drive part arranged to engage the teeth m ounted on the yaw ring of the yaw ring assembly in order to cause a relative m ovem ent between the yaw ring assem bly and the drive part, via the teeth.
  • the yaw gear according to the second aspect of the invention comprises a yaw ring assem bly according to the first aspect of the invention.
  • the remarks set forth above are therefore equally applicable here.
  • the yaw gear according to the second aspect of the invention further com prises a rotatable drive part arranged to engage the teeth mounted on the yaw ring of the yaw ring assem bly.
  • the drive part may, e.g. , include a yaw m otor driving a rotatable gear wheel.
  • a relative movement between the yaw ring assem bly and a com ponent or part on which the drive part is arranged takes place.
  • the yaw ring assem bly may be mounted on an upper part of a wind turbine tower, while the drive part may be mounted on a nacelle of the wind turbine.
  • rotation of the rotatable drive part causes the nacelle to rotate relative to the yaw ring assem bly, and thereby relative to the tower.
  • the yaw ring assem bly m ay be m ounted on the nacelle, while the drive part may be m ounted on an upper part of the wind turbine tower.
  • rotation of the rotatable drive part causes the yaw ring, and thereby the nacelle, to rotate relative to the tower.
  • the invention provides a wind turbine com prising a tower, a nacelle and a yaw gear according to the second aspect of the invention arranged between the tower and the nacelle.
  • the invention provides a method for replacing a tooth part of a yaw ring assembly, the yaw ring assem bly comprising a yaw ring and a plurality of independent tooth parts m ounted circumferentially on the yaw ring, the method comprising the steps of:
  • the m ethod according to the fourth aspect of the invention is a method for replacing a tooth part of a yaw ring assem bly according to the first aspect of the invention. Accordingly, the remarks set forth above are equally applicable here. As described above, a single tooth part or a few tooth parts can easily be replaced without dism antling the yaw ring assem bly or replacing the entire yaw ring assem bly.
  • the yaw ring assem bly m ay further com prise a plurality of pins m ounted circumferentially on the yaw ring, interleaved with the teeth, and the m ethod may further comprise the steps of rem oving at least one pin arranged adjacent to the tooth part to be replaced, from the yaw ring, prior to rem oving the tooth part, and rem ounting the pin on the yaw ring, after the new tooth part has been mounted on the yaw ring.
  • the tooth parts are fixated relative to the yaw ring by m eans of the pins, as described above.
  • rem oving one or more pins arranged adjacent to the tooth part to be replaced removes this fixation, and thereby the tooth part is allowed to be rem oved from the yaw ring along a radial direction.
  • the pin(s) is/ are rem ounted on the yaw ring in order to fixate the new tooth part relative to the yaw ring.
  • the tooth parts may be provided with at least one protruding portion extending along a direction being substantially parallel to an axial direction defined by the yaw ring assem bly, and the step of removing a tooth to be replaced m ay com prise m oving the protruding portion(s) out of one or more recesses formed in the yaw ring, along a radial direction defined by the yaw ring assem bly, and the step of m ounting a new tooth part may com prise inserting the protruding portion(s) into the recess(es) .
  • one or m ore protruding portions form ed on the tooth parts are arranged in engagem ent with recesses form ed in the yaw ring, and the tooth parts are removed from and mounted on the yaw ring by m oving the protruding portion(s) out of and into the recesses along a radial direction.
  • FIGs. 1 -8 illustrate a yaw ring assembly according to a first embodim ent of the invention
  • Figs. 9 and 10 are perspective views of a tooth part for the yaw ring assembly of Figs. 1 -8,
  • Fig. 1 1 is a perspective view of a pin for the yaw ring assem bly of Figs. 1 -8,
  • Figs. 12- 17 illustrate a yaw ring assembly according to a second em bodiment of the invention
  • Figs. 18 and 19 are perspective views of a tooth part for the yaw ring assem bly of Figs. 12- 17.
  • Figs. 1 -8 illustrate a yaw ring assem bly 1 according to a first embodiment of the invention.
  • Fig. 1 is a perspective view of a yaw ring 2 without tooth parts mounted thereon, and Fig. 2 shows a detail of the yaw ring 2 of Fig. 1 .
  • the yaw ring 2 com prises an upper ring 3 and a lower ring 4 interconnected by an inner peripheral ring 5.
  • the yaw ring 2 defines a U-shaped recess in which a plurality of teeth can be received, the U-shaped recess having its open end arranged along an outer periphery of the yaw ring 2. This will be described in further detail below.
  • a plurality of recesses 6 are formed in the peripheral ring 5. Each of these recesses 6 is arranged to receive a protruding portion of a tooth part in order to accurately position a plurality of teeth in the U-shaped recess. This will be described in further detail below.
  • a plurality of holes 7 are formed in the upper ring 3 and a plurality of holes 8 are form ed in the lower ring 4.
  • This allows a plurality of pins to be mounted on the yaw ring 2 in order to fixate the plurality of teeth with respect to the yaw ring 2.
  • the yaw ring 2 m ay be manufactured in a single piece.
  • the upper ring 3, the lower ring 4 and the inner peripheral ring 5 m ay be manufactured as separate parts and subsequently assembled to form the yaw ring 2.
  • each of the upper ring 3, the lower ring 4 and the inner peripheral ring 5 may be assem bled from two or more segm ents. I n this case the joints between the segm ents of the rings 3, 4, 5 may advantageously be displaced with respect to each other in order to avoid weak spots in the yaw ring 2.
  • a tooth part may comprise only a single tooth or it may comprise two or m ore teeth. Preferred embodiments include that each tooth part comprises exactly one tooth, exactly two teeth, or exactly three teeth.
  • tooth parts com prising exactly one tooth is shown, and consequently, these will often be referred to simply as‘tooth’ to ease reading.
  • Fig. 3 shows the yaw ring 2 of Figs. 1 and 2 with one tooth 9 and one pin 10 mounted thereon.
  • the tooth 9 has been arranged with a protruding portion (not shown) being received in one of the recesses 6 form ed in the peripheral ring 5.
  • the position of the tooth 9 relative to the yaw ring 2 is defined by the position of the recess 6 in which the protruding portion of the tooth 9 has been received.
  • the pin 10 has been mounted on the yaw ring 2 along a direction which is substantially perpendicular to a radial direction defined by the yaw ring 2.
  • the pin 10 has been passed through one of the holes 7 form ed in the upper ring 3 of the yaw ring 2 and through one of the holes 8 form ed in the lower ring 4.
  • the position of the pin 10 relative to the yaw ring 2 is defined by the positions of the hole 7, 8, respectively, in which the pin 10 has been positioned.
  • the relative position of the tooth 9 and the pin 10 is determ ined by the positions of the relevant recess 6 and the relevant holes 7, 8 relative to the yaw ring 2.
  • the tooth 9 and the pin 10 are positioned accurately relative to each other, and a firm abutment between the tooth 9 and the pin 1 0 is ensured. This allows appropriate load transfer to take place between the tooth 9 and the pin 10.
  • the pin 10 is arranged along a groove or recess (not shown) formed in the tooth 9. Thereby, once a plurality of teeth 9 and pins 10 have been m ounted circumferentially on the yaw ring 2 in the U-shaped recess, the pin 10 prevents the tooth 9 from accidentally leaving the U-shaped recess.
  • Figs. 4 and 5 are cross sectional views of a yaw ring assembly 1 comprising the yaw ring 2 of Figs. 1 -3.
  • a plurality of teeth 9 and a plurality of pins 10 have been circumferentially mounted on the yaw ring 2 in an interleaved manner, i.e. in such a m anner that the teeth 9 and the pins 10 are arranged alternatingly along the outer circumference of the yaw ring 2.
  • the plurality of teeth 9 forms a complete toothed rim of the yaw ring assembly 1 .
  • each tooth 9 protrudes outwards from the U-shaped recess, thereby form ing the toothed rim of the yaw ring assem bly 1 in a region which exceeds the yaw ring 2 along an outward radial direction.
  • the cross section illustrated in Fig. 4 goes through one of the teeth 9. Thereby it can be seen that the tooth 9 has a protruding portion 1 1 which is received in one of the recesses 6 form ed in the inner peripheral ring 5.
  • the cross section illustrated in Fig. 5 goes through one of the pins 1 0. Thereby it can be seen how the pin 10 passes through the holes 7, 8 form ed in the upper ring 3 and the lower ring 8, respectively.
  • Fig. 6 is a perspective view of the yaw ring assem bly 1 of Figs. 4 and 5
  • Fig. 7 is a detail of the yaw ring assem bly 1 of Fig. 6
  • Fig. 8 is a cross sectional view of the yaw ring assem bly 1 of Fig. 6.
  • the num ber of tooth parts may vary in different em bodim ents, but it is preferred to have at least five tooth parts, such as at least 10, or even at least 20.
  • a single tooth 9 can easily be replaced, e.g. in the case of dam age or wear on the tooth 9, without dism antling the entire yaw ring assem bly 1 , and without replacing the entire yaw ring assem bly 1 .
  • This can sim ply be done by rem oving the pins 10 arranged adjacent to the tooth 9 to be replaced, removing the tooth 9, inserting a new tooth 9 and reintroducing the pins 10.
  • the yaw ring 2 could, alternatively, be designed with an outer peripheral ring instead of the inner peripheral ring 5.
  • the yaw ring 2 would define a U-shaped recess having its open end arranged along an inner periphery of the yaw ring 2.
  • a plurality of teeth 9 mounted in the U-shaped recess essentially in the manner described above would form a toothed rim along the inner circumference of the yaw ring 2 rather than along the outer circumference of the yaw ring 2.
  • Figs.9 and 10 are perspective views of a tooth 9 for use in the yaw ring assembly 1 illustrated in Figs. 1-8, seen from two different angles.
  • Fig. 11 is a perspective view of a pin 10 for use in the yaw ring assembly 1 illustrated in Figs.1-8.
  • Figs. 12-17 illustrate a yaw ring assembly 1 according to a second embodiment of the invention.
  • the yaw ring assembly 1 according to the second embodiment of the invention is very similar to the yaw ring assembly 1 according to the first embodiment of the invention illustrated in Figs. 1-8 and described above, and it will therefore not be described in detail here.
  • Fig. 12 is a perspective view of a yaw ring 2 without any teeth mounted thereon, the yaw ring 2 comprising an upper ring 3, a lower ring 4 and an inner
  • the yaw ring 2 of Fig. 12 is provided with a plurality of recesses 13 formed in the upper ring 3 and a plurality of recesses 14 formed in the lower ring 4.
  • the recesses 13, 14 are each arranged to receive a protruding portion form ed on a tooth being inserted into the U-shaped recess along a radial direction. This will be described in further detail below.
  • Fig. 13 is a detail of the yaw ring 2 of Fig. 12 having a single tooth 9 m ounted in the U-shaped recess thereof.
  • the tooth 9 comprises two protruding portions 15, 16.
  • Protruding portion 15 has been received in one of the recesses 13 formed in the upper ring 3 and protruding portion 1 6 has been received in one of the recesses 14 formed in the lower ring 4.
  • an additional protruding portion (not shown) has been received in one of the recesses 6 form ed in the inner peripheral ring 5, essentially in the manner described above with reference to Figs. 1 -8. Accordingly, the position of the tooth 9 relative to the yaw ring 2 is defined by the positions of the relevant recesses 6, 13, 14.
  • Fig. 14 is a perspective view of a part of a yaw ring assembly 1 comprising the yaw ring 2 of Figs. 12 and 13.
  • a plurality of teeth 9 have been mounted on the yaw ring 2, thereby form ing a complete toothed rim of the yaw ring assembly 1 , essentially as described above with reference to Figs. 1 -8.
  • the teeth 9 are arranged in abutm ent with each other.
  • Figs. 15 and 1 6 are cross sectional views of the yaw ring assem bly 1 of Fig. 14.
  • the cross section illustrated in Fig. 15 goes through one of the teeth 9.
  • the tooth 9 has a protruding portion 1 1 which is received in one of the recesses 6 formed in the inner peripheral ring 5.
  • the protruding portion 15 is received in one of the recesses 13 form ed in the upper ring 3
  • the protruding portion 16 is received in one of the recesses 14 form ed in the lower ring 4.
  • FIG. 16 goes through a part of the yaw ring 2 between two of the teeth 9.
  • Fig. 17 is a perspective view of the yaw ring assembly 1 according to the second em bodiment of the invention. I t is clearly seen that the teeth 9 form a complete toothed rim of the yaw ring assembly 1 .
  • a single tooth 9 can easily be replaced, essentially for the reasons set forth above with reference to Figs. 1 -8.
  • the pins 10 have been om itted, and the teeth 9 are instead provided with protruding portions 15, 1 6 being received in recesses 13, 14 form ed in the yaw ring 2, and arranged in abutment with each other.
  • this design also ensures that the teeth 9 are kept firm ly in place during operation, and that an appropriate load
  • Figs. 18 and 19 are perspective views of a tooth 9 for use in the yaw ring assem bly 1 illustrated in Figs. 12- 1 7, seen from two different angles.
  • the protruding portions 1 1 , 15, 16 being arranged to be received in respective recesses form ed in the yaw ring are clearly seen.
  • a tooth part 9 may com prise only a single tooth as illustrated, or it m ay comprise two or m ore teeth, such as exactly two teeth or exactly three teeth.
  • each tooth part m ay be fixed as shown for individual teeth, i.e. have a single protruding portion 1 1 , be mounted via a single recess 6, etc. as shown.
  • variations to this could still be possible within the scope of the following claim s.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Wind Motors (AREA)

Abstract

L'invention concerne un ensemble couronne d'orientation (1) pour un engrenage de lacet d'une éolienne. L'ensemble couronne d'orientation (1) comprend une couronne d'orientation (2), et une pluralité de parties de dents indépendantes (9) montées de manière circonférentielle sur la couronne d'orientation (2). Une seule partie de dent (9) peut facilement être remplacée sans démonter l'ensemble couronne d'orientation (1) ou remplacer entièrement l'ensemble couronne d'orientation (1). Une répartition de charge entre les dents (9) ressemblant à une répartition de charge dans une couronne d'orientation ayant les dents formées directement à l'intérieur de celle-ci est obtenue.
PCT/DK2019/050007 2018-02-02 2019-01-09 Couronne d'orientation à parties de dent interchangeables Ceased WO2019149327A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DKPA201870064 2018-02-02
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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2093148A (en) * 1981-02-13 1982-08-25 Tyso Gareth Toothed rotary drive- transmitting members with replaceable teeth
EP1571334A1 (fr) * 2004-03-04 2005-09-07 Gamesa Eolica, S.A. (Sociedad Unipersonal) Dispositif et procédé de maintien d'une éolienne orientable dans la direction du vent
US20090220343A1 (en) * 2008-02-29 2009-09-03 General Electric Company Hub pitch gear repair method
WO2010078944A2 (fr) 2009-01-09 2010-07-15 Imo Holding Gmbh Dispositif d'accouplement rotatif de deux parties d'une installation et éolienne équipée de ce dispositif
WO2011095620A1 (fr) * 2010-02-08 2011-08-11 Fobox As Agencement d'une roue de courroie dentée
CN102588217B (zh) * 2011-01-14 2016-06-15 瓦房店瑞昌轴承制造有限公司 偏航系统齿圈

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2093148A (en) * 1981-02-13 1982-08-25 Tyso Gareth Toothed rotary drive- transmitting members with replaceable teeth
EP1571334A1 (fr) * 2004-03-04 2005-09-07 Gamesa Eolica, S.A. (Sociedad Unipersonal) Dispositif et procédé de maintien d'une éolienne orientable dans la direction du vent
US20090220343A1 (en) * 2008-02-29 2009-09-03 General Electric Company Hub pitch gear repair method
WO2010078944A2 (fr) 2009-01-09 2010-07-15 Imo Holding Gmbh Dispositif d'accouplement rotatif de deux parties d'une installation et éolienne équipée de ce dispositif
WO2011095620A1 (fr) * 2010-02-08 2011-08-11 Fobox As Agencement d'une roue de courroie dentée
CN102588217B (zh) * 2011-01-14 2016-06-15 瓦房店瑞昌轴承制造有限公司 偏航系统齿圈

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