DE102017125550A1 - Device for biasing a rotor bearing of a wind energy plant - Google Patents

Device for biasing a rotor bearing of a wind energy plant

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Publication number
DE102017125550A1
DE102017125550A1 DE102017125550.8A DE102017125550A DE102017125550A1 DE 102017125550 A1 DE102017125550 A1 DE 102017125550A1 DE 102017125550 A DE102017125550 A DE 102017125550A DE 102017125550 A1 DE102017125550 A1 DE 102017125550A1
Authority
DE
Germany
Prior art keywords
bearing
ring
rotor
adjusting
biasing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
DE102017125550.8A
Other languages
German (de)
Inventor
Anatol von Malottki
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.)
Nordex Energy GmbH
Original Assignee
Nordex Energy GmbH
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 Nordex Energy GmbH filed Critical Nordex Energy GmbH
Priority to DE102017125550.8A priority Critical patent/DE102017125550A1/en
Publication of DE102017125550A1 publication Critical patent/DE102017125550A1/en
Withdrawn legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03DWIND MOTORS
    • F03D80/00Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
    • F03D80/70Bearing or lubricating arrangements
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C35/00Rigid support of bearing units; Housings, e.g. caps, covers
    • F16C35/04Rigid support of bearing units; Housings, e.g. caps, covers in the case of ball or roller bearings
    • F16C35/06Mounting or dismounting of ball or roller bearings; Fixing them onto shaft or in housing
    • F16C35/067Fixing them in a housing
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05BINDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2240/00Components
    • F05B2240/50Bearings
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00Bearings with rolling contact, for exclusively rotary movement
    • F16C19/22Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
    • F16C19/34Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load
    • F16C19/38Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with two or more rows of rollers
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2229/00Setting preload
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2360/00Engines or pumps
    • F16C2360/31Wind motors
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/72Sealings
    • F16C33/76Sealings of ball or roller bearings
    • F16C33/78Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
    • F16C33/7803Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members suited for particular types of rolling bearings
    • F16C33/7806Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members suited for particular types of rolling bearings for spherical roller bearings
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/72Sealings
    • F16C33/76Sealings of ball or roller bearings
    • F16C33/78Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
    • F16C33/7816Details of the sealing or parts thereof, e.g. geometry, material
    • F16C33/783Details of the sealing or parts thereof, e.g. geometry, material of the mounting region
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/72Sealings
    • F16C33/76Sealings of ball or roller bearings
    • F16C33/78Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
    • F16C33/7886Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted outside the gap between the inner and outer races, e.g. sealing rings mounted to an end face or outer surface of a race
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/70Wind energy
    • Y02E10/72Wind turbines with rotation axis in wind direction

Abstract

A device for biasing a rotor bearing of a wind turbine, which has a seated on a rotor shaft bearing inner ring and supported on a rotor bearing housing bearing outer ring, wherein an arranged on the rotor bearing housing collar carries a relative to the adjusting ring adjustable adjustment member which cooperates with one end with the bearing outer ring.

Description

  • The present invention relates to a device for biasing a rotor bearing of a wind power plant, wherein the rotor bearing has a seated on a rotor shaft bearing inner ring and supported on a rotor bearing housing bearing outer ring.
  • Out EP 1 457 673 B1 a tensioning device for a main bearing of a rotor shaft has become known. The clamping device is screwed onto the stationary bearing housing and abuts a projection on the outer ring of the bearing.
  • Out DE 10 2004 058 905 B4 a bearing assembly with a bearing housing has become known. The outer ring of the rolling bearing is fixed relative to a Lagergehäuservorsprung, wherein between the outer ring and the bearing cap, a clamping ring is inserted. A seal carrier carries the sealing element sealing the gap.
  • Out EP 2 185 814 B1 is known a main shaft mounted for a wind turbine, in which the bearing outer ring between a projection of a clamping element and a shoulder of the bearing housing is fixed axially. The bearing interior is sealed by a bellows-shaped seal extending between the bearing outer ring and the bearing inner ring.
  • In the DE 10 2015 221 412 A1 Also, a bearing for a main shaft of a wind turbine is disclosed in which the bearing outer ring between a projection of a clamping element and a shoulder of the bearing housing is axially fixed. The seal assembly has two seal carriers, one of which is attached to the fixed housing and one on the clamping element.
  • The known from the prior art solution for biasing a rotor bearing using a projection having a clamping element has proved to be disadvantageous. The fit of the rotor bearing is indefinite because it is designed as a transition fit. It may occur between the bearing and the bearing housing a game, so that it can cause fretting corrosion between the two components. Alternatively, the gap may also arise between the bearing flange of the clamping element and the bearing housing. In this case, the screw connection between the two components is heavily loaded.
  • The invention has for its object to provide a device for biasing a rotor bearing, which avoids the disadvantages mentioned above and ensures a reliable fixation of the bearing outer ring.
  • According to the invention the object is achieved by a device having the features of claim 1. Advantageous embodiments form the subject of the dependent claims.
  • The device according to the invention is provided and intended to bias a rotor bearing of a wind energy plant. The rotor bearing has a seated on a rotor shaft bearing inner ring and supported on a bearing housing bearing outer ring. For example, the rotor shaft may be a shaft that connects the rotor to a transmission. The bearing housing forms the fixed part, opposite the rotor shaft rotates. According to the invention a collar is arranged on the rotor bearing housing, which carries a relative to the adjusting ring adjustable adjustment. The adjustment cooperates with one end with the bearing outer ring. Here, the end can act directly or indirectly on the bearing outer ring. About the adjustment of the bearing outer ring can be clamped to the bearing housing. The bearing outer ring is then held on the adjusting element and serving as an abutment provided in the bearing housing projection. Preferably, the adjusting ring has a plurality of uniformly distributed over the circumference adjustment elements in order to avoid tilting of the bearing outer ring when applying the biasing force and during operation and to reduce locally acting stresses on the bearing outer ring. By the device according to the invention a compensation of tolerances is significantly simplified. The collar can be bolted firmly to the rotor bearing housing. The tolerance compensation takes place via the adjusting element. By adjusting the adjustment also a defined bias can be applied to the bearing outer ring. In addition, a simple readjustment of the bearing clearance is possible at any time.
  • Preferably, the adjusting ring has a through hole with an internal thread, wherein the adjusting element is designed as a screw arranged in the through hole. By adjusting the screw whose end comes into contact (directly or indirectly) with the bearing outer ring and can exert a force on the bearing outer ring relative to the adjusting ring. After applying the preload, the screw is secured in its final position.
  • In a preferred embodiment, the adjusting ring is not applied to the bearing outer ring. This means that the power transmission between the adjusting ring and bearing outer ring takes place exclusively via the adjusting element arranged in the adjusting ring. The power transmission can be defined and the above-described problem of fits is avoided.
  • In a preferred embodiment of the device according to the invention, the adjusting element cooperates with a flat load-balancing ring, which bears against the bearing outer ring. By interposing a load-balancing ring between the adjusting element and the bearing outer ring, the surface pressure can be reduced to the bearing outer ring and damage to the rotor bearing can be avoided.
  • Preferably, the bearing is designed as a double-row roller bearing, in particular as a spherical roller bearing or double-row tapered roller bearing. Double-row bearings have largely prevailed as storage for the rotor shaft in wind turbines. The bearing inner ring and the bearing outer ring are preferably formed in one piece. In principle, however, it is also possible to use multi-part bearing rings for the rotor bearing.
  • In a preferred embodiment, the adjusting ring is designed as a seal carrier. The sealing lip for sealing the rotor bearing can be inserted into a groove provided in the adjusting ring. Alternatively, a fastening of the seal on the adjusting ring via a Verklemmvorrichtung is possible.
  • In a preferred embodiment, an elastic sealing element is arranged on the seal carrier, which preferably cooperates with a arranged on the rotor shaft spacer ring or a shaft nut.
  • The invention will be explained in more detail below with reference to various exemplary embodiments. Show it:
    • 1 a biasing arrangement according to the prior art,
    • 2 a biasing arrangement according to the invention with a load distribution ring,
    • 3 a biasing arrangement according to the invention without a load distribution ring,
    • 4 a biasing arrangement according to the invention with a designed as a seal carrier collar and
    • 5 an alternative biasing arrangement according to the invention with a trained as a seal carrier collar.
  • 1 shows a known from the prior art solution for biasing a rotor bearing of a wind turbine. The rotor shaft shown in a detail 10 is arranged in the drive train of the wind turbine. The rotor shaft 10 is by means of a in a rotor bearing housing 16 arranged rotor bearing 11 rotatably mounted on the machine carrier (not shown) of the wind turbine. The rotor bearing 11 , which is designed as a spherical roller bearing, has one with the rotor shaft 10 connected bearing inner ring 12 and one with the rotor bearing housing 16 connected bearing outer ring 14 on. Between the bearing rings is a double row arrangement of rolling elements 18 , On the bearing housing 16 is a tensioning element 21 arranged, which via radially arranged screws 22 with the bearing housing 16 is screwed. The tensioning element 21 has an inward pointing lead 24 who is at the bearing outer ring 14 is applied. On the other side, the bearing outer ring is supported 14 at a projection 26 of the rotor bearing housing. Also recognizable is the resulting gap due to the transition fit 60 between rotor bearing housing 16 and tensioning element 21 , Alternatively, the gap may also be between the projection 24 and the bearing outer ring 14 arise.
  • The bearing inner ring 12 is supported by a spacer ring 50 on a shoulder of the rotor shaft 10 from. On the other hand, it can have a shaft nut (not shown) on the rotor shaft 10 be fixed. For sealing the rotor bearing 11 is a labyrinth seal 20 provided, extending between the clamping element 21 and the spacer ring 50 extends. On the other side of the bearing usually another seal is provided, which is not shown here.
  • 2 shows an inventively designed solution for biasing a rotor bearing of a wind turbine. A collar 32 is about a screw 34 with the rotor bearing housing 36 screwed. The collar 32 has an adjusting element 38 , which is also formed in the present example as a screw head. The adjusting element 38 extends through a hole in the collar 32 and is located on a load balancing ring 40 on. The load balancing ring 40 lies on one side of the bearing outer ring 14 on. With the load balancing ring 40 becomes the punctually acting force of the adjustment 38 evenly on the bearing outer ring 14 distributed. The bearing outer ring 14 lies on the collar 32 opposite side on a paragraph 26 of the rotor bearing housing 16 on. By adjusting the adjusting element 38 can the bearing outer ring 14 fixed to the rotor bearing housing in its position and also with respect to the bearing inner ring 12 be tense.
  • 3 shows an alternative embodiment of the invention, wherein like elements have been given the same reference numerals. In contrast to the design of 2 is here on a load balancing ring 40 on the bearing outer ring 14 dispensed and the adjustment 38 lies with his inner end 52 directly on the bearing outer ring 14 of the rotor bearing 11 on.
  • At the in 2 and 3 The adjusting element is preferably arranged windward side, this means in the illustrated figures, the rotor hub is located with the rotor blades on the left side of the illustrated rotor bearing assembly.
  • 4 shows a further embodiment according to the invention, in which the adjusting ring 32 as a seal carrier 54 is trained. The seal carrier 54 points in its the rotor shaft 10 facing inner surface of a groove 55 in which an elastic sealing element 56 is inserted, which with the spacer ring 50 interacts.
  • 5 also shows an embodiment with a seal carrier 54 trained collar 32 , The seal carrier is in this case leeward of the rotor bearing 16 and the sealing element 56 works with the shaft nut 58 together.
  • LIST OF REFERENCE NUMBERS
  • 10
    rotor shaft
    11
    rotor bearing
    12
    Bearing inner ring
    14
    Bearing outer ring
    16
    Rotor bearing housing
    18
    rolling elements
    20
    labyrinth seal
    21
    clamping element
    22
    screw
    24
    head Start
    26
    head Start
    32
    collar
    34
    screw
    38
    adjustment
    40
    Load balancing ring
    50
    spacer
    52
    The End
    54
    seal carrier
    55
    groove
    56
    sealing element
    58
    shaft nut
    60
    gap
  • QUOTES INCLUDE IN THE DESCRIPTION
  • This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.
  • Cited patent literature
    • EP 1457673 B1 [0002]
    • DE 102004058905 B4 [0003]
    • EP 2185814 B1 [0004]
    • DE 102015221412 A1 [0005]

Claims (8)

  1. Device for biasing a rotor bearing (11) of a wind energy plant, which has a bearing inner ring (12) seated on a rotor shaft (10) and a bearing outer ring (14) supported on a rotor bearing housing (16), characterized in that a positioning ring (32) arranged on the rotor bearing housing ) carries a relative to the adjusting ring (32) adjustable adjustment member (38) cooperating with one end (52) with the bearing outer ring (14).
  2. Device after Claim 1 , characterized in that the adjusting ring (32) has a through hole with an internal thread and the adjusting element (38) is designed as a screw arranged in the through hole (38).
  3. Device after Claim 1 or 2 , characterized in that the adjusting ring (32) is not applied to the bearing outer ring (14).
  4. Device according to one of Claims 1 to 3 , characterized in that the adjusting element (38) cooperates with a flat load-balancing ring (40) which bears against the bearing outer ring (14).
  5. Device according to one of Claims 1 to 4 , characterized in that the rotor bearing (11) is designed as a double-row roller bearing, in particular as a spherical roller bearing or as a double-row tapered roller bearing.
  6. Device according to one of Claims 1 to 5 , characterized in that the adjusting ring (32) is designed as a seal carrier (54).
  7. Device after Claim 6 , characterized in that an elastic sealing element (56) is arranged on the seal carrier (54).
  8. Device after Claim 7 , characterized in that the sealing element (56) cooperates with a spacer ring (50) or a shaft nut (58).
DE102017125550.8A 2017-11-01 2017-11-01 Device for biasing a rotor bearing of a wind energy plant Withdrawn DE102017125550A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE102017125550.8A DE102017125550A1 (en) 2017-11-01 2017-11-01 Device for biasing a rotor bearing of a wind energy plant

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102017125550.8A DE102017125550A1 (en) 2017-11-01 2017-11-01 Device for biasing a rotor bearing of a wind energy plant

Publications (1)

Publication Number Publication Date
DE102017125550A1 true DE102017125550A1 (en) 2019-05-02

Family

ID=66138225

Family Applications (1)

Application Number Title Priority Date Filing Date
DE102017125550.8A Withdrawn DE102017125550A1 (en) 2017-11-01 2017-11-01 Device for biasing a rotor bearing of a wind energy plant

Country Status (1)

Country Link
DE (1) DE102017125550A1 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1457673A1 (en) 2003-03-10 2004-09-15 Volker Limbeck Wind turbine rotor support arrangement.
DE102004058905B4 (en) 2004-12-07 2010-02-18 Aktiebolaget Skf Rolling bearings with segmented bearing rings
EP2185814A1 (en) 2007-08-04 2010-05-19 Ab Skf Bearing of a main shaft of a wind power plant
DE102015221412A1 (en) 2015-11-02 2017-05-04 Aktiebolaget Skf Sealing arrangement and wind turbine with the seal assembly

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1457673A1 (en) 2003-03-10 2004-09-15 Volker Limbeck Wind turbine rotor support arrangement.
DE102004058905B4 (en) 2004-12-07 2010-02-18 Aktiebolaget Skf Rolling bearings with segmented bearing rings
EP2185814A1 (en) 2007-08-04 2010-05-19 Ab Skf Bearing of a main shaft of a wind power plant
DE102015221412A1 (en) 2015-11-02 2017-05-04 Aktiebolaget Skf Sealing arrangement and wind turbine with the seal assembly

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R119 Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee