US20030138290A1 - Butt joint for hollow profiles - Google Patents

Butt joint for hollow profiles Download PDF

Info

Publication number
US20030138290A1
US20030138290A1 US10/168,814 US16881402A US2003138290A1 US 20030138290 A1 US20030138290 A1 US 20030138290A1 US 16881402 A US16881402 A US 16881402A US 2003138290 A1 US2003138290 A1 US 2003138290A1
Authority
US
United States
Prior art keywords
straps
butt connection
set forth
strap
hollow profile
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.)
Abandoned
Application number
US10/168,814
Inventor
Aloys Wobben
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of US20030138290A1 publication Critical patent/US20030138290A1/en
Priority to US11/289,113 priority Critical patent/US7481624B2/en
Abandoned legal-status Critical Current

Links

Images

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
    • F03D1/00—Wind motors with rotation axis substantially parallel to the air flow entering the rotor 
    • F03D1/06—Rotors
    • F03D1/0608—Rotors characterised by their aerodynamic shape
    • F03D1/0633—Rotors characterised by their aerodynamic shape of the blades
    • 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
    • F03D1/00—Wind motors with rotation axis substantially parallel to the air flow entering the rotor 
    • F03D1/06—Rotors
    • F03D1/065—Rotors characterised by their construction elements
    • F03D1/0675—Rotors characterised by their construction elements of the blades
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C27/00—Rotorcraft; Rotors peculiar thereto
    • B64C27/32—Rotors
    • B64C27/46—Blades
    • 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
    • F03D1/00—Wind motors with rotation axis substantially parallel to the air flow entering the rotor 
    • F03D1/06—Rotors
    • F03D1/065—Rotors characterised by their construction elements
    • F03D1/0658—Arrangements for fixing wind-engaging parts to a hub
    • 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
    • F03D13/00—Assembly, mounting or commissioning of wind motors; Arrangements specially adapted for transporting wind motor components
    • F03D13/10—Assembly of wind motors; Arrangements for erecting wind motors
    • 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
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B5/00—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them
    • F16B5/0004—Joining sheets, plates or panels in abutting relationship
    • F16B5/0008—Joining sheets, plates or panels in abutting relationship by moving the sheets, plates or panels substantially in their own plane, perpendicular to the abutting edge
    • 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
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B5/00—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them
    • F16B5/02—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of fastening members using screw-thread
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2230/00—Manufacture
    • F05B2230/60—Assembly methods
    • F05B2230/604—Assembly methods using positioning or alignment devices for aligning or centering, e.g. pins
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2240/00—Components
    • F05B2240/20—Rotors
    • F05B2240/21—Rotors for wind turbines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2240/00—Components
    • F05B2240/20—Rotors
    • F05B2240/21—Rotors for wind turbines
    • F05B2240/221—Rotors for wind turbines with horizontal axis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2240/00—Components
    • F05B2240/20—Rotors
    • F05B2240/30—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2240/00—Components
    • F05B2240/20—Rotors
    • F05B2240/30—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor
    • F05B2240/302—Segmented or sectional blades
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2240/00—Components
    • F05B2240/40—Use of a multiplicity of similar components
    • 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
    • F05B2250/00—Geometry
    • F05B2250/20—Geometry three-dimensional
    • F05B2250/29—Geometry three-dimensional machined; miscellaneous
    • F05B2250/292—Geometry three-dimensional machined; miscellaneous tapered
    • 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
    • F05B2260/30—Retaining components in desired mutual position
    • F05B2260/301—Retaining bolts or nuts
    • 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
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B2/00—Friction-grip releasable fastenings
    • F16B2/02—Clamps, i.e. with gripping action effected by positive means other than the inherent resistance to deformation of the material of the fastening
    • F16B2/06—Clamps, i.e. with gripping action effected by positive means other than the inherent resistance to deformation of the material of the fastening external, i.e. with contracting action
    • F16B2/08—Clamps, i.e. with gripping action effected by positive means other than the inherent resistance to deformation of the material of the fastening external, i.e. with contracting action using bands
    • 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
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B2200/00—Constructional details of connections not covered for in other groups of this subclass
    • F16B2200/63—Frangible connections
    • 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
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B2200/00—Constructional details of connections not covered for in other groups of this subclass
    • F16B2200/65—Miter joints
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/72—Wind turbines with rotation axis in wind direction
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S403/00—Joints and connections
    • Y10S403/15—Splice plates for co-linear members
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49316—Impeller making
    • Y10T29/49336—Blade making
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49316—Impeller making
    • Y10T29/49336—Blade making
    • Y10T29/49337—Composite blade
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49316—Impeller making
    • Y10T29/49336—Blade making
    • Y10T29/49339—Hollow blade
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/16—Joints and connections with adjunctive protector, broken parts retainer, repair, assembly or disassembly feature
    • Y10T403/1616—Position or guide means
    • Y10T403/1624—Related to joint component
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/50—Bridged by diverse connector
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/55—Member ends joined by inserted section
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/55—Member ends joined by inserted section
    • Y10T403/551—Externally bridged
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/55—Member ends joined by inserted section
    • Y10T403/553—Laterally inserted section
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/75—Joints and connections having a joining piece extending through aligned openings in plural members
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/76—Joints and connections having a cam, wedge, or tapered portion

Definitions

  • the invention concerns a butt connection for divided hollow profile members, in particular for rotor blades of wind power installations.
  • the rotors of wind power installations have rotor blades comprising a load-bearing spar or beam member—in most cases with an upper and a lower flange—and a hollow profile member which determines the aerodynamic properties of the rotor.
  • the hollow profile members generally comprise composite materials, namely glass or carbon fibers with polyester or epoxy resins as binders. What has become the usual practice is producing the rotor blade hollow profile members (whose cross-section generally changes over the length thereof) in the form of two longitudinally divided half-shell portions which are assembled to the spar to form the finished blade.
  • the invention resolves that problem by a multiplicity of bars or straps which are arranged along the join line and which bridge over same and which are fixed with their ends respectively to one of the profile member parts to be connected.
  • the straps or bars replace entirely the one-piece flange connection conventionally usual for connecting hollow profile members; they are substantially lighter than that and can be arranged distributed over the periphery of the hollow profile member discretely at different spacings from each other, namely in dependence on the forces to be transmitted at the join line, so that the design of the connection—with very good application of the forces involved—is simpler in terms of its operating strength, than when using a conventional flange/screw connection.
  • connection can also be used for longitudinally divided hollow profile members (rotor blades), it is suitable in particular for transversely divided hollow profile members of non-round cross-section, with the bars or straps being arranged at the periphery of the hollow profile member.
  • each strap connection comprises double bars or straps with a respective bar or strap arranged on the outside and on the inside of the hollow profile member.
  • each strap can be prestressed with a defined tensile force.
  • a sufficiently high tensile force prestressing provides that, in spite of an alternate loading (tensile force/compression force) in the course of a revolution of the rotor, the situation at the butt connection still remains one involving tensile forces and it is only the magnitude of such forces that changes over the course of a revolution.
  • each strap is fixed to the hollow profile member parts by means of two bolts and at least one of the bolts, in the respective contact region with the strap or straps, has a wedge-shaped flattening in its axial direction and is held non-rotatably.
  • the bolt could also be of a part-conical configuration, and then it can also be rotated.
  • the bolt advantageously comprises a sleeve provided with the wedge-shaped flattenings, and a screw which passes axially through the sleeve and which has a nut, wherein both the screw head and also the nut press by means of cup-like pressure portions against the associated strap and prestress same by movement along the wedge surface (or cone surface).
  • a further alternative form of the prestressing mechanism can provide that at least one of the bolts, in the respective contact regions with the straps, has a bulge which is eccentric with respect to its axis.
  • FIG. 1 shows a plan view of a (singly) transversely divided rotor blade for the rotor of a wind power installation in the form of a diagrammatic cross-section (the gap between the parts serves only for enhanced clarity of the drawing),
  • FIG. 2 shows a plan view of the portion x of the butt connection according to the invention between the two rotor blade parts in FIG. 1,
  • FIG. 3 shows a perspective view of the entire butt connection between the two rotor blade parts in FIG. 1, but which is opened up as in FIG. 1,
  • FIG. 4 is a view in longitudinal section on an enlarged scale through one of the strap connections forming the butt connection in the entirety thereof,
  • FIG. 5 shows a plan view of the strap connection in FIG. 4,
  • FIG. 6 shows a partial view taken along line A-A in FIG. 4.
  • FIG. 1 is a diagrammatic view in cross-section of a transversely divided rotor blade of a wind power installation.
  • the join 2 between the parts 1 a and 1 b of the rotor blade 1 is open.
  • the two rotor blade parts 1 a and 1 b comprise a load-bearing core profile member 3 and an aerodynamically shaped shell portion 4 .
  • FIG. 2 is a plan view showing a part of the butt connection between the parts 1 a and 1 b of the rotor blade 1 when the join 2 is closed.
  • the butt connection comprises a plurality of bars or straps 5 which bridge over the join 2 and which are respectively fixed by means of bolts 6 a , 6 b to both rotor blade parts 1 a , 1 b.
  • FIG. 3 as in FIG. 1—the join 2 is opened, and portions of the two rotor parts 1 a , 1 b are shown in a perspective view.
  • the bars or straps 5 are also cut away (only for the purposes of clearer illustration) and the overall view of the (opened) butt connection shows how the straps 5 with their bolts 6 a , 6 b are distributed over the—non-round—cross-section of the divided hollow profile member.
  • the arrangement of the straps 5 is at its densest in the region of the core profile member 3 because it is there that the highest transmission of forces occurs; in the other regions, there are larger spacings between the straps 5 .
  • FIGS. 4 to 6 show a strap connection in detail.
  • a respective strap 5 is arranged above and below the hollow profile member parts 1 a , 1 b .
  • Both straps 5 are fixed to the part 1 b by means of a bolt 6 b , with the interposition of washers 7 , by a screw 8 with nut 9 .
  • Fixing of the straps 5 to the part 1 a is similar, but the bolt 6 a has wedge-shaped flattened portions 10 which taper from the center of the bolt towards its ends and towards the axis 11 of the (longer) screw 8 with nut 9 .
  • Cup-like pressure portions 12 are provided between the head of the screw 8 and the strap 5 adjacent thereto on the one hand and between the nut 9 and the strap 5 adjacent thereto on the other hand.
  • the pressure portions 12 exert corresponding forces on the straps 5 ; the approach movement thereof, in particular towards the profile member part 1 a , causes them to slide upwardly along the flattened portions 10 of the bolt 6 a , whereby a tensile stress is built up in the straps 5 (in the contact regions of the straps 5 with the flattened portions 10 , the inside wall of the straps 5 can be adapted to the surfaces of the flattened portions 10 ).
  • the tensile stress in the straps 5 results in a closing pressure stress applied to the hollow profile parts 1 a , 1 b in the region of their join 2 .

Abstract

A butt connection of divided hollow profile members, which is suitable in particular for rotor blades of wind power installations, comprises a multiplicity of straps which are arranged along the join and which bridge over same and which are respectively fixed with their ends to one of the profile members to be connected. In this respect the arrangement is preferably such that one of the two bolts fixing the strap at the ends thereof has a wedge-shaped flattening, by means of which a tensile prestressing can be imparted to the strap.

Description

  • The invention concerns a butt connection for divided hollow profile members, in particular for rotor blades of wind power installations. [0001]
  • Similarly to aircraft propellers, the rotors of wind power installations have rotor blades comprising a load-bearing spar or beam member—in most cases with an upper and a lower flange—and a hollow profile member which determines the aerodynamic properties of the rotor. Nowadays the hollow profile members generally comprise composite materials, namely glass or carbon fibers with polyester or epoxy resins as binders. What has become the usual practice is producing the rotor blade hollow profile members (whose cross-section generally changes over the length thereof) in the form of two longitudinally divided half-shell portions which are assembled to the spar to form the finished blade. [0002]
  • With the increasing power of modern wind power installations, the rotors thereof are also becoming larger in diameter, which requires the production of correspondingly longer rotor blades. If the production of such long rotor blades, that is to say the half-shell portions required for same, in one piece, is already not without its problems (inter alia because of the correspondingly large factory building), transportation which is then required to the location at which the wind power installation is erected represents a serious obstacle. [0003]
  • Having regard thereto and having regard to the foreseeable further increase in the length of rotor blades for wind power installations, consideration is to be given to transversely dividing rotor blades of that kind and in that respect more specifically the hollow profile members thereof, transporting them separately, and only finishing the rotor blades at the location of erection of the wind power installation, by assembling the individual parts at their butt joins. The problem which arises out of that approach however is that of developing a butt connection which does not seriously influence the aerodynamic properties of the rotor blade, which is of low weight, and which in particular is capable of withstanding the considerable fluctuating loads to which the rotor blades are exposed in operation of a wind power installation. [0004]
  • The invention resolves that problem by a multiplicity of bars or straps which are arranged along the join line and which bridge over same and which are fixed with their ends respectively to one of the profile member parts to be connected. The straps or bars replace entirely the one-piece flange connection conventionally usual for connecting hollow profile members; they are substantially lighter than that and can be arranged distributed over the periphery of the hollow profile member discretely at different spacings from each other, namely in dependence on the forces to be transmitted at the join line, so that the design of the connection—with very good application of the forces involved—is simpler in terms of its operating strength, than when using a conventional flange/screw connection. Although this kind of connection can also be used for longitudinally divided hollow profile members (rotor blades), it is suitable in particular for transversely divided hollow profile members of non-round cross-section, with the bars or straps being arranged at the periphery of the hollow profile member. [0005]
  • The freedom from maintenance of the new butt connection is of particular advantage because the connection is not self-releasing and therefore there are no prestressing losses that also have to be tolerated. [0006]
  • Preferably each strap connection comprises double bars or straps with a respective bar or strap arranged on the outside and on the inside of the hollow profile member. In addition it is advantageously provided that each strap can be prestressed with a defined tensile force. A sufficiently high tensile force prestressing provides that, in spite of an alternate loading (tensile force/compression force) in the course of a revolution of the rotor, the situation at the butt connection still remains one involving tensile forces and it is only the magnitude of such forces that changes over the course of a revolution. [0007]
  • In order to apply the tensile force prestressing required for that purpose to the individual straps which jointly form the butt connection, it is preferably provided that each strap is fixed to the hollow profile member parts by means of two bolts and at least one of the bolts, in the respective contact region with the strap or straps, has a wedge-shaped flattening in its axial direction and is held non-rotatably. Alternatively the bolt could also be of a part-conical configuration, and then it can also be rotated. At any event, when fixing the straps, when they are pushed with their (suitably configured) ends over the bolt and urged in a direction towards the surface in question of the hollow profile member, at the same time tensile force prestressing is built up in the longitudinal direction of the strap and thus perpendicularly to the join line. In order to implement that in a simple fashion, the bolt advantageously comprises a sleeve provided with the wedge-shaped flattenings, and a screw which passes axially through the sleeve and which has a nut, wherein both the screw head and also the nut press by means of cup-like pressure portions against the associated strap and prestress same by movement along the wedge surface (or cone surface). [0008]
  • A further alternative form of the prestressing mechanism can provide that at least one of the bolts, in the respective contact regions with the straps, has a bulge which is eccentric with respect to its axis. By rotating the bolt—which moreover does not need to be rotated to fix the straps—it is also possible in that way to produce the desired tensile force prestressing in the strap.[0009]
  • The drawing illustrates the invention by means of an embodiment. In the drawing: [0010]
  • FIG. 1 shows a plan view of a (singly) transversely divided rotor blade for the rotor of a wind power installation in the form of a diagrammatic cross-section (the gap between the parts serves only for enhanced clarity of the drawing), [0011]
  • FIG. 2 shows a plan view of the portion x of the butt connection according to the invention between the two rotor blade parts in FIG. 1, [0012]
  • FIG. 3 shows a perspective view of the entire butt connection between the two rotor blade parts in FIG. 1, but which is opened up as in FIG. 1, [0013]
  • FIG. 4 is a view in longitudinal section on an enlarged scale through one of the strap connections forming the butt connection in the entirety thereof, [0014]
  • FIG. 5 shows a plan view of the strap connection in FIG. 4, and [0015]
  • FIG. 6 shows a partial view taken along line A-A in FIG. 4.[0016]
  • FIG. 1 is a diagrammatic view in cross-section of a transversely divided rotor blade of a wind power installation. The [0017] join 2 between the parts 1 a and 1 b of the rotor blade 1 is open. The two rotor blade parts 1 a and 1 b comprise a load-bearing core profile member 3 and an aerodynamically shaped shell portion 4.
  • FIG. 2 is a plan view showing a part of the butt connection between the [0018] parts 1 a and 1 b of the rotor blade 1 when the join 2 is closed. The butt connection comprises a plurality of bars or straps 5 which bridge over the join 2 and which are respectively fixed by means of bolts 6 a, 6 b to both rotor blade parts 1 a, 1 b.
  • In FIG. 3—as in FIG. 1—the [0019] join 2 is opened, and portions of the two rotor parts 1 a, 1 b are shown in a perspective view. The bars or straps 5 are also cut away (only for the purposes of clearer illustration) and the overall view of the (opened) butt connection shows how the straps 5 with their bolts 6 a, 6 b are distributed over the—non-round—cross-section of the divided hollow profile member. The arrangement of the straps 5 is at its densest in the region of the core profile member 3 because it is there that the highest transmission of forces occurs; in the other regions, there are larger spacings between the straps 5.
  • FIGS. [0020] 4 to 6 show a strap connection in detail. A respective strap 5 is arranged above and below the hollow profile member parts 1 a, 1 b. Both straps 5 are fixed to the part 1 b by means of a bolt 6 b, with the interposition of washers 7, by a screw 8 with nut 9. Fixing of the straps 5 to the part 1 a is similar, but the bolt 6 a has wedge-shaped flattened portions 10 which taper from the center of the bolt towards its ends and towards the axis 11 of the (longer) screw 8 with nut 9. Cup-like pressure portions 12 are provided between the head of the screw 8 and the strap 5 adjacent thereto on the one hand and between the nut 9 and the strap 5 adjacent thereto on the other hand. When the screw 8 with the nut 9 is tightened, the pressure portions 12 exert corresponding forces on the straps 5; the approach movement thereof, in particular towards the profile member part 1 a, causes them to slide upwardly along the flattened portions 10 of the bolt 6 a, whereby a tensile stress is built up in the straps 5 (in the contact regions of the straps 5 with the flattened portions 10, the inside wall of the straps 5 can be adapted to the surfaces of the flattened portions 10). The tensile stress in the straps 5 results in a closing pressure stress applied to the hollow profile parts 1 a, 1 b in the region of their join 2.

Claims (8)

1. A butt connection for divided hollow profile members, in particular for rotor blades of wind power installations, characterised by a multiplicity of straps (5) which are arranged along the join (2) and which bridge over same and which are respectively fixed with their ends to one of the profile members parts (1 a, 1 b) to be connected.
2. A butt connection as set forth in claim 1 for transversely divided hollow profile members of non-round cross-section characterised in that the straps (5) are arranged at the periphery of the hollow profile member (1).
3. A butt connection as set forth in claim 1 or claim 2 characterised in that the density of arrangement (proximity) of the straps (5) along the join (2) is different in dependence on the tensile forces to be transmitted at the join (2).
4. A butt connection as set forth in one of claims 1 to 3 characterised in that there are respectively provided double straps with a respective strap (5) arranged on the outside and on the inside of the hollow profile member (1).
5. A butt connection as set forth in one of the preceding claims characterised in that each strap (5) or double strap can be prestressed with a defined tensile force.
6. A butt connection as set forth in claim 5 characterised in that the straps (5) are fixed to the profile member parts (1 a, 1 b) by means of two bolts (6 a, 6 b) and at least one of the bolts (6 a) in the contact regions with the straps (5) has a wedge-shaped flattening (10) in its axial direction and is held non-rotatably.
7. A butt connection as set forth in claim 4 and claim 6 characterised in that the bolt (6 a) comprises a sleeve provided with the wedge-shaped flattenings (10) and a screw (8) with nut (9), which passes axially through the sleeve, wherein both the screw head and also the nut press by means of cup-shaped pressure portions (12) against the associated strap (5) and prestress same by movement along the wedge surface.
8. A butt connection as set forth in claim 5 characterised in that the straps (5) are fixed to the profile member parts (1 a, 1 b) by means of two bolts (6) and at least one of the bolts respectively has in the contact regions with the straps (5) a bulge which is eccentric with respect to the axis thereof.
US10/168,814 1999-12-24 2000-12-22 Butt joint for hollow profiles Abandoned US20030138290A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US11/289,113 US7481624B2 (en) 1999-12-24 2005-11-28 Butt connection for hollow profile members

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19962989A DE19962989B4 (en) 1999-12-24 1999-12-24 Rotor blade for wind turbines
DE19962989.7 1999-12-24

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US11/289,113 Continuation US7481624B2 (en) 1999-12-24 2005-11-28 Butt connection for hollow profile members

Publications (1)

Publication Number Publication Date
US20030138290A1 true US20030138290A1 (en) 2003-07-24

Family

ID=7934489

Family Applications (2)

Application Number Title Priority Date Filing Date
US10/168,814 Abandoned US20030138290A1 (en) 1999-12-24 2000-12-22 Butt joint for hollow profiles
US11/289,113 Expired - Fee Related US7481624B2 (en) 1999-12-24 2005-11-28 Butt connection for hollow profile members

Family Applications After (1)

Application Number Title Priority Date Filing Date
US11/289,113 Expired - Fee Related US7481624B2 (en) 1999-12-24 2005-11-28 Butt connection for hollow profile members

Country Status (14)

Country Link
US (2) US20030138290A1 (en)
EP (1) EP1244873B1 (en)
JP (1) JP2003518586A (en)
KR (1) KR20020062992A (en)
AT (1) ATE265000T1 (en)
AU (1) AU2676101A (en)
BR (1) BR0016724B1 (en)
CA (1) CA2394969C (en)
DE (2) DE19962989B4 (en)
DK (1) DK1244873T3 (en)
ES (1) ES2217026T3 (en)
NO (1) NO324961B1 (en)
PT (1) PT1244873E (en)
WO (1) WO2001048378A1 (en)

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050186081A1 (en) * 2004-02-24 2005-08-25 Mohamed Mansour H. Wind blade spar cap and method of making
WO2005100781A1 (en) * 2004-04-07 2005-10-27 Gamesa Eólica, S.A., Sociedad Unipersonal Wind turbine blade
ES2265760A1 (en) * 2005-03-31 2007-02-16 Gamesa Eolica, S.A. Sociedad Unipersonal Blade for wind-power generators
US20070290118A1 (en) * 2004-11-24 2007-12-20 Henrik Stiesdal Method And Connecting Piece For Assembling An Arm, Preferably A Windmill Arm, In Sections
US20080206062A1 (en) * 2007-02-28 2008-08-28 Gamesa Innovation & Technology, Sl. Wind turbine multi-panel blade
US20100028161A1 (en) * 2008-08-01 2010-02-04 Vestas Wind Systems A/S Segmented Rotor Blade Extension Portion
EP2157315A1 (en) 2008-08-21 2010-02-24 Lm Glasfiber A/S Blade section for a wind turbine blade
US20100122442A1 (en) * 2008-11-14 2010-05-20 General Electric Company Turbine blade fabrication
US20100158694A1 (en) * 2008-12-18 2010-06-24 Ronny Stam Blade module, a modular rotor blade and a method for assembling a modular rotor blade
EP2243955A2 (en) 2009-04-22 2010-10-27 Gamesa Innovation & Technology, S.L. Lightning protection system for sectional wind turbine blades
US20110123343A1 (en) * 2009-11-24 2011-05-26 Ronner David E Wind turbine blade and methods, apparatus and materials for fabrication in the field
US20110171032A1 (en) * 2008-06-20 2011-07-14 Vestas Wind Systems A/S Method of manufacturing a spar for a wind turbine from elements having geometrically well-defined joint surface portions
US20120269643A1 (en) * 2009-12-02 2012-10-25 Vestas Wind Systems A/S Sectional wind turbine blade
US20130336795A1 (en) * 2012-05-31 2013-12-19 Airbus Operations Limited Method of coupling aerofoil surface structures and an aerofoil assembly
US20140271210A1 (en) * 2011-05-13 2014-09-18 Investigaciones Y Desarrollos Eolicos, S.L. Connection system for connecting component sections of wind turbine blades
US20150240780A1 (en) * 2014-02-25 2015-08-27 General Electric Company Joint assembly for rotor blade segments of a wind turbine
US9765756B2 (en) 2008-05-07 2017-09-19 Vestas Wind Systems A/S Sectional blade
US20180238300A1 (en) * 2017-02-21 2018-08-23 General Electric Company Joint Assembly for Rotor Blade Segments of a Wind Turbine
WO2019219139A1 (en) * 2018-05-16 2019-11-21 Vestas Wind Systems A/S Connection joint for a sectional wind turbine blade and associated methods
US10563636B2 (en) 2017-08-07 2020-02-18 General Electric Company Joint assembly for a wind turbine rotor blade
CN111526968A (en) * 2017-12-27 2020-08-11 纳布拉风力技术公司 System for controlling pretension of bolt
US11015573B2 (en) * 2016-12-28 2021-05-25 Vestas Wind Systems A/S Connection joint for a sectional wind turbine rotor blade and associated methods
US20210239101A1 (en) * 2018-04-23 2021-08-05 Vestas Wind Systems A/S Wind turbine blade assembly

Families Citing this family (50)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10307682A1 (en) * 2002-06-05 2004-01-08 Aloys Wobben Rotor blade of a wind turbine
DE10235496B4 (en) * 2002-08-02 2015-07-30 General Electric Co. Method for producing a rotor blade, rotor blade and wind energy plant
DE10319246A1 (en) * 2003-04-28 2004-12-16 Aloys Wobben Rotor blade of a wind turbine
DE102006022279B4 (en) * 2006-05-11 2016-05-12 Aloys Wobben Rotor blade for a wind energy plant
ES2319599B1 (en) * 2007-01-08 2010-01-26 Guillermo Petri Larrea REVERSIBLE SECTIONING SYSTEM IN VARIOUS PARTS OF AEROGENERATING BLADES.
JP5242920B2 (en) 2007-01-23 2013-07-24 株式会社日立製作所 Split blade for windmill
ES2343712B1 (en) * 2007-05-03 2011-05-18 Manuel Torres Martinez AEROGENERATOR SHOVEL DIVIDED IN SECTIONS AND MANUFACTURING PROCESS OF THE SAME.
ES2333499B1 (en) * 2007-09-11 2010-10-15 Manuel Torres Martinez SHOVEL FOR AEROGENERATOR.
US8171633B2 (en) * 2007-12-19 2012-05-08 General Electric Company Method for assembling a multi-segment wind turbine blade
ES2364258B1 (en) * 2008-03-05 2012-06-01 Manuel Torres Martinez AEROGENERATOR BLADES SECTION UNION SYSTEM
FR2937687B1 (en) * 2008-10-23 2010-12-17 Astrium Sas WINDBREAD BLADES AND METHOD OF MANUFACTURING THE SAME
US7891947B2 (en) * 2008-12-12 2011-02-22 General Electric Company Turbine blade and method of fabricating the same
ES2342998B1 (en) * 2009-01-19 2011-06-27 Manuel Torres Martinez AIRLINER SHOVEL.
ES2663526T3 (en) * 2009-04-13 2018-04-13 Maxiflow Manufacturing Inc. Wind turbine blade and its construction method
FR2948155A1 (en) 2009-07-16 2011-01-21 Astrium Sas METHOD FOR DIMENSIONING MECHANICAL BONDS
FR2948154B1 (en) 2009-07-16 2011-09-16 Astrium Sas DEVICE FOR ASSEMBLING WINDMILL BLADE RODS AND METHOD FOR CONNECTING WINDMILL BLADE TRUNCONS
US10137542B2 (en) 2010-01-14 2018-11-27 Senvion Gmbh Wind turbine rotor blade components and machine for making same
ES2794015T3 (en) 2010-01-14 2020-11-17 Siemens Gamesa Renewable Energy Service Gmbh Wind turbine rotor blade components and methods for making them
US8172539B2 (en) 2010-06-17 2012-05-08 General Electric Company Wind turbine rotor blade joint
US8562302B2 (en) * 2010-07-06 2013-10-22 General Electric Company Wind turbine blade with integrated handling mechanism attachment bores
GB201011539D0 (en) * 2010-07-08 2010-08-25 Blade Dynamics Ltd A wind turbine blade
US20110182730A1 (en) * 2010-07-27 2011-07-28 Vestas Wind Systems A/S Wind turbine blade with damping element for edgewise vibrations
US7976275B2 (en) * 2010-08-30 2011-07-12 General Electric Company Wind turbine rotor blade assembly having an access window and related methods
DE102010046519A1 (en) * 2010-09-22 2012-03-22 Nordex Energy Gmbh Rotor blade or rotor blade segment for a wind energy plant
DE102010046518A1 (en) * 2010-09-22 2012-03-22 Nordex Energy Gmbh Rotor blade or rotor segment for a wind turbine
US20110243736A1 (en) * 2010-12-08 2011-10-06 General Electric Company Joint sleeve for a rotor blade assembly of a wind turbine
ES2398553B1 (en) 2011-02-24 2014-02-06 Gamesa Innovation & Technology S.L. A MULTI-PANEL IMPROVED AIRPLANE SHOVEL.
ES2399259B1 (en) 2011-05-24 2014-02-28 Gamesa Innovation & Technology, S.L. A joining method for a multi-panel wind turbine blade.
FR2980246B1 (en) 2011-09-20 2018-08-17 Arianegroup Sas DEVICE FOR CONNECTING WING STRINGS AND METHOD OF ASSEMBLING SUCH TRUNCONS
CN102392797B (en) * 2011-11-22 2013-04-17 中国计量学院 Middle section of extrusion bendable transverse superposition type medium-sized wind power blade and manufacturing equipment thereof
DE102011088025A1 (en) * 2011-12-08 2013-06-13 Wobben Properties Gmbh Rotor blade for horizontal axle wind turbine, has anchoring element anchored in blade outer part, counter element anchored in blade inner part, and connecting bolts reaching through counter element and fastened in anchoring element
CN102518568B (en) * 2011-12-27 2014-02-12 东方电气集团东方汽轮机有限公司 Wind power sectional-type blade
GB201215004D0 (en) 2012-08-23 2012-10-10 Blade Dynamics Ltd Wind turbine tower
GB201217210D0 (en) 2012-09-26 2012-11-07 Blade Dynamics Ltd A metod of forming a structural connection between a spar cap fairing for a wind turbine blade
GB201217212D0 (en) 2012-09-26 2012-11-07 Blade Dynamics Ltd Windturbine blade
DE102012111219B4 (en) 2012-11-21 2016-06-16 Spitzner Engineers GmbH Wind turbine component
CN103195666A (en) * 2013-04-01 2013-07-10 南通东泰新能源设备有限公司 Connecting structure and method for segmented blades of megawatt fan
US9297357B2 (en) 2013-04-04 2016-03-29 General Electric Company Blade insert for a wind turbine rotor blade
US9506452B2 (en) 2013-08-28 2016-11-29 General Electric Company Method for installing a shear web insert within a segmented rotor blade assembly
US10578077B2 (en) 2014-04-07 2020-03-03 Wobben Properties Gmbh Rotor blade for a wind turbine
DE102015120113A1 (en) * 2015-11-20 2017-05-24 Wobben Properties Gmbh Wind turbine rotor blade and wind turbine
EP3441561B1 (en) * 2016-04-04 2023-03-15 Nabrawind Technologies SL Device for joining a modular blade
CN106089568A (en) * 2016-07-14 2016-11-09 株洲时代新材料科技股份有限公司 Stagewise wind electricity blade and assembly method thereof
US10550823B2 (en) * 2016-08-10 2020-02-04 General Electric Company Method for balancing segmented wind turbine rotor blades
DK3563052T3 (en) 2016-12-28 2021-04-26 Vestas Wind Sys As LED TO CONNECT A WIND TURBINE ROTOR WING TO A ROTOR HUB AND ASSOCIATED PROCEDURES
WO2018153523A1 (en) * 2017-02-24 2018-08-30 Siemens Wind Power A/S A blade for a wind turbine
US10961982B2 (en) 2017-11-07 2021-03-30 General Electric Company Method of joining blade sections using thermoplastics
DE102017126970A1 (en) 2017-11-16 2019-05-16 Wobben Properties Gmbh Rotor blade and rotor for a wind turbine, wind energy plant, method for producing a rotor blade, for connecting a rotor blade with a rotor hub and for repairing a rotor of a wind turbine
KR20200074217A (en) 2017-11-16 2020-06-24 보벤 프로퍼티즈 게엠베하 Connection of rotor blades and rotor blades of wind power plants
DE102018112833A1 (en) * 2018-05-29 2019-12-05 Wobben Properties Gmbh Wind turbine rotor blade

Citations (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US706974A (en) * 1902-04-10 1902-08-12 Robert W Lyle Conduit for electric wires.
US2125882A (en) * 1937-03-17 1938-08-09 Henry A Berliner Aircraft construction
US2140772A (en) * 1937-05-17 1938-12-20 Ingleside Company Spline and connecter
US2722294A (en) * 1950-04-17 1955-11-01 Richard F Tickle Adjustable joist
US3469865A (en) * 1964-02-24 1969-09-30 Westinghouse Electric Corp Joint structure for use in large casings or the like
US3825360A (en) * 1971-07-30 1974-07-23 T Galich Joint apparatus for sectioned skis or the like
US3855754A (en) * 1973-02-05 1974-12-24 W Scoville Miter joint lock and combination
US3884002A (en) * 1973-03-15 1975-05-20 American Store Equip Partition system
US3985461A (en) * 1973-05-08 1976-10-12 Young Windows Inc. Butt joints
US4116573A (en) * 1977-03-28 1978-09-26 Fuchs Lothar U Fastening
US4283898A (en) * 1978-03-22 1981-08-18 Cualitas Industrial, S.A. Wall panel clamping apparatus
US4474536A (en) * 1980-04-09 1984-10-02 Gougeon Brothers, Inc. Wind turbine blade joint assembly and method of making wind turbine blades
US4569167A (en) * 1983-06-10 1986-02-11 Wesley Staples Modular housing construction system and product
US4661008A (en) * 1978-03-29 1987-04-28 Umezawa Norihiro Joint structure for channels
US5078534A (en) * 1990-12-19 1992-01-07 Samson Truss Corporation Flush nut connectors
US5521951A (en) * 1994-09-23 1996-05-28 General Electric Company Reactor core shroud repair with tapered pins
US5530219A (en) * 1994-04-22 1996-06-25 General Electric Company Reactor core shroud repair with welded brackets
US5729581A (en) * 1994-09-14 1998-03-17 Siemens Aktiengesellschaft Core shroud, in particular for cladding a reactor core in a boiling-water nuclear reactor and a method for repairing a core shroud
US5741083A (en) * 1994-03-23 1998-04-21 Schvartz; Didier Timber connector
US5896980A (en) * 1997-07-14 1999-04-27 Rexnord Corporation Guide rail splice
US6067338A (en) * 1997-02-21 2000-05-23 General Electric Company Reactor core shroud repair using thermally tensioned links to apply compression across shroud vertical seam weld
US6167618B1 (en) * 1999-03-24 2001-01-02 Mpr Associates, Inc. Method for repairing vertical welds in a boiling water reactor shroud using a clamp with eccentric pins
US6345927B1 (en) * 2000-03-08 2002-02-12 General Electric Company Weld reinforcement
US6571524B2 (en) * 1999-01-07 2003-06-03 University Of Utah Interconnection of building panels using fiber reinforced plastic composite-material connector plate
US6648541B1 (en) * 1998-09-16 2003-11-18 Ccs Technology, Inc. Joining element for bridging the separating area of a divided seal in cable fittings

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3310327A (en) * 1962-07-05 1967-03-21 Tremblay Joseph Rosaire One-piece joint coupling
FR1431024A (en) 1965-01-26 1966-03-11 Panel assembly device
JPS53677A (en) 1976-06-23 1978-01-06 Hitachi Ltd Metal steam discharge lamp for vertical lighting
JPS537931A (en) 1976-07-10 1978-01-24 Shiga Akiresu Kk Floor material with printed pattern and method of producing same
JPS55119810A (en) 1979-03-08 1980-09-13 Toshihide Miki Machine for picking up pebbles from ground or like
DE2921152C2 (en) * 1979-05-25 1982-04-22 Messerschmitt-Bölkow-Blohm GmbH, 8000 München Rotor blade for wind power plants
AT375440B (en) * 1979-12-19 1984-08-10 Schuermann & Co Heinz T-CONNECTION FOR WINDOW PROFILES
DE3038862C2 (en) * 1980-10-15 1985-02-07 Lindhorst, Alfred, 5678 Wermelskirchen Device for the construction of soundproof walls
JP2524972B2 (en) 1984-03-27 1996-08-14 古河電気工業株式会社 Orthodontic device
DE3435458A1 (en) * 1984-09-27 1986-06-12 Erich Herter Wind turbine
JPS63188312A (en) 1987-01-30 1988-08-03 井関農機株式会社 Machine body hitch system of reaper
DE4308540A1 (en) * 1993-03-17 1994-09-22 Schueco Int Kg Butt joint
DE4428730A1 (en) * 1994-08-15 1996-02-22 Biotech Gmbh Zwickau Planungs Metallic rotor blade for wind powered systems
DE4444439C2 (en) * 1994-12-14 2001-02-22 Karl Gebhardt Solar energy system and receiving element and ridge connecting element therefor
DE19730856C2 (en) * 1997-07-18 2001-02-08 Talbot Gmbh & Co Kg Connection of the end faces of two hollow square profiles
DE19741129C1 (en) * 1997-09-15 1999-05-06 Mannesmann Ag Releasable coupling for parallel building profiles

Patent Citations (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US706974A (en) * 1902-04-10 1902-08-12 Robert W Lyle Conduit for electric wires.
US2125882A (en) * 1937-03-17 1938-08-09 Henry A Berliner Aircraft construction
US2140772A (en) * 1937-05-17 1938-12-20 Ingleside Company Spline and connecter
US2722294A (en) * 1950-04-17 1955-11-01 Richard F Tickle Adjustable joist
US3469865A (en) * 1964-02-24 1969-09-30 Westinghouse Electric Corp Joint structure for use in large casings or the like
US3825360A (en) * 1971-07-30 1974-07-23 T Galich Joint apparatus for sectioned skis or the like
US3855754A (en) * 1973-02-05 1974-12-24 W Scoville Miter joint lock and combination
US3884002A (en) * 1973-03-15 1975-05-20 American Store Equip Partition system
US3985461A (en) * 1973-05-08 1976-10-12 Young Windows Inc. Butt joints
US4116573A (en) * 1977-03-28 1978-09-26 Fuchs Lothar U Fastening
US4283898A (en) * 1978-03-22 1981-08-18 Cualitas Industrial, S.A. Wall panel clamping apparatus
US4661008A (en) * 1978-03-29 1987-04-28 Umezawa Norihiro Joint structure for channels
US4474536A (en) * 1980-04-09 1984-10-02 Gougeon Brothers, Inc. Wind turbine blade joint assembly and method of making wind turbine blades
US4569167A (en) * 1983-06-10 1986-02-11 Wesley Staples Modular housing construction system and product
US5078534A (en) * 1990-12-19 1992-01-07 Samson Truss Corporation Flush nut connectors
US5741083A (en) * 1994-03-23 1998-04-21 Schvartz; Didier Timber connector
US5530219A (en) * 1994-04-22 1996-06-25 General Electric Company Reactor core shroud repair with welded brackets
US5729581A (en) * 1994-09-14 1998-03-17 Siemens Aktiengesellschaft Core shroud, in particular for cladding a reactor core in a boiling-water nuclear reactor and a method for repairing a core shroud
US5521951A (en) * 1994-09-23 1996-05-28 General Electric Company Reactor core shroud repair with tapered pins
US5803686A (en) * 1994-09-23 1998-09-08 General Electric Company Reactor core shroud repair using splice plate to bridge weld seam
US6067338A (en) * 1997-02-21 2000-05-23 General Electric Company Reactor core shroud repair using thermally tensioned links to apply compression across shroud vertical seam weld
US5896980A (en) * 1997-07-14 1999-04-27 Rexnord Corporation Guide rail splice
US6648541B1 (en) * 1998-09-16 2003-11-18 Ccs Technology, Inc. Joining element for bridging the separating area of a divided seal in cable fittings
US6571524B2 (en) * 1999-01-07 2003-06-03 University Of Utah Interconnection of building panels using fiber reinforced plastic composite-material connector plate
US6167618B1 (en) * 1999-03-24 2001-01-02 Mpr Associates, Inc. Method for repairing vertical welds in a boiling water reactor shroud using a clamp with eccentric pins
US6345927B1 (en) * 2000-03-08 2002-02-12 General Electric Company Weld reinforcement

Cited By (48)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050186081A1 (en) * 2004-02-24 2005-08-25 Mohamed Mansour H. Wind blade spar cap and method of making
WO2005081995A2 (en) * 2004-02-24 2005-09-09 Mohamed Mansour H Wind blade spar cap and method of making
WO2005081995A3 (en) * 2004-02-24 2006-07-20 Mansour H Mohamed Wind blade spar cap and method of making
US20070189902A1 (en) * 2004-02-24 2007-08-16 Mohamed Mansour H Wind blade spar cap and method of making
US7377752B2 (en) 2004-02-24 2008-05-27 3-Tex, Inc. Wind blade spar cap and method of making
WO2005100781A1 (en) * 2004-04-07 2005-10-27 Gamesa Eólica, S.A., Sociedad Unipersonal Wind turbine blade
US20080145231A1 (en) * 2004-04-07 2008-06-19 Jose Ignacio Llorente Gonzales Wind Turbine Blade
US7901188B2 (en) 2004-04-07 2011-03-08 Gamesa Innovation & Technology, S.L. Wind turbine blade
US7980827B2 (en) 2004-11-24 2011-07-19 Siemens Aktiengesellschaft Method and connecting piece for assembling an arm, preferably a windmill arm, in sections
US20070290118A1 (en) * 2004-11-24 2007-12-20 Henrik Stiesdal Method And Connecting Piece For Assembling An Arm, Preferably A Windmill Arm, In Sections
US20090208341A1 (en) * 2005-03-31 2009-08-20 Gamesa Innovation And Technology, S.L. Blade for wind-power generators
US8511996B2 (en) * 2005-03-31 2013-08-20 Gamesa Innovation & Technology, S.L. Blade for wind-power generator formed by attaching multiple independent sections utilizing connection means at the end of each opposing sections
ES2265760A1 (en) * 2005-03-31 2007-02-16 Gamesa Eolica, S.A. Sociedad Unipersonal Blade for wind-power generators
US20080206062A1 (en) * 2007-02-28 2008-08-28 Gamesa Innovation & Technology, Sl. Wind turbine multi-panel blade
US8262361B2 (en) * 2007-02-28 2012-09-11 Gamesa Innovation & Technology, S.L. Wind turbine multi-panel blade
US9765756B2 (en) 2008-05-07 2017-09-19 Vestas Wind Systems A/S Sectional blade
US20110171032A1 (en) * 2008-06-20 2011-07-14 Vestas Wind Systems A/S Method of manufacturing a spar for a wind turbine from elements having geometrically well-defined joint surface portions
US8777578B2 (en) * 2008-06-20 2014-07-15 Vestas Wind Systems A/S Method of manufacturing a spar for a wind turbine from elements having geometrically well-defined joint surface portions
US20100028161A1 (en) * 2008-08-01 2010-02-04 Vestas Wind Systems A/S Segmented Rotor Blade Extension Portion
US8317479B2 (en) * 2008-08-01 2012-11-27 Vestas Wind Systems A/S Segmented rotor blade extension portion
EP2157315A1 (en) 2008-08-21 2010-02-24 Lm Glasfiber A/S Blade section for a wind turbine blade
US20110164984A1 (en) * 2008-08-21 2011-07-07 Lm Glasfiber A/S Blade section for a wind turbine blade
US8770940B2 (en) 2008-08-21 2014-07-08 Lm Glasfiber A/S Blade section for a wind turbine blade
US8510947B2 (en) * 2008-11-14 2013-08-20 General Electric Company Turbine blade fabrication
US20100122442A1 (en) * 2008-11-14 2010-05-20 General Electric Company Turbine blade fabrication
US8079820B2 (en) 2008-12-18 2011-12-20 General Electric Company Blade module, a modular rotor blade and a method for assembling a modular rotor blade
US8245400B2 (en) 2008-12-18 2012-08-21 General Electric Company Blade module, a modular rotor blade and a method for assembling a modular rotor blade
US20100158694A1 (en) * 2008-12-18 2010-06-24 Ronny Stam Blade module, a modular rotor blade and a method for assembling a modular rotor blade
EP2243955A2 (en) 2009-04-22 2010-10-27 Gamesa Innovation & Technology, S.L. Lightning protection system for sectional wind turbine blades
US8562296B2 (en) 2009-04-22 2013-10-22 Gamesa Innovation & Technology, S.L. Lightning protection system for sectional blades
US20100272570A1 (en) * 2009-04-22 2010-10-28 Gamesa Innovation & Technology, S.L. Lightning protection system for sectional blades
US20110123343A1 (en) * 2009-11-24 2011-05-26 Ronner David E Wind turbine blade and methods, apparatus and materials for fabrication in the field
US9388789B2 (en) * 2009-12-02 2016-07-12 Vestas Wind Systems A/S Sectional wind turbine blade
US20120269643A1 (en) * 2009-12-02 2012-10-25 Vestas Wind Systems A/S Sectional wind turbine blade
US20140271210A1 (en) * 2011-05-13 2014-09-18 Investigaciones Y Desarrollos Eolicos, S.L. Connection system for connecting component sections of wind turbine blades
US9574545B2 (en) * 2011-05-13 2017-02-21 Investigaciones Y Desarrollos Eolicos S.L. Connection system for connecting component sections of wind turbine blades
US9096304B2 (en) * 2012-05-31 2015-08-04 Airbus Operations Limited Method of coupling aerofoil surface structures and an aerofoil assembly
US20130336795A1 (en) * 2012-05-31 2013-12-19 Airbus Operations Limited Method of coupling aerofoil surface structures and an aerofoil assembly
US20150240780A1 (en) * 2014-02-25 2015-08-27 General Electric Company Joint assembly for rotor blade segments of a wind turbine
US9790919B2 (en) * 2014-02-25 2017-10-17 General Electric Company Joint assembly for rotor blade segments of a wind turbine
US11015573B2 (en) * 2016-12-28 2021-05-25 Vestas Wind Systems A/S Connection joint for a sectional wind turbine rotor blade and associated methods
US20180238300A1 (en) * 2017-02-21 2018-08-23 General Electric Company Joint Assembly for Rotor Blade Segments of a Wind Turbine
US10495058B2 (en) * 2017-02-21 2019-12-03 General Electric Company Joint assembly for rotor blade segments of a wind turbine
US10563636B2 (en) 2017-08-07 2020-02-18 General Electric Company Joint assembly for a wind turbine rotor blade
CN111526968A (en) * 2017-12-27 2020-08-11 纳布拉风力技术公司 System for controlling pretension of bolt
US20210239101A1 (en) * 2018-04-23 2021-08-05 Vestas Wind Systems A/S Wind turbine blade assembly
US11506182B2 (en) * 2018-04-23 2022-11-22 Vestas Wind Systems A/S Wind turbine blade assembly
WO2019219139A1 (en) * 2018-05-16 2019-11-21 Vestas Wind Systems A/S Connection joint for a sectional wind turbine blade and associated methods

Also Published As

Publication number Publication date
NO324961B1 (en) 2008-01-14
AU2676101A (en) 2001-07-09
DE19962989B4 (en) 2006-04-13
BR0016724B1 (en) 2009-01-13
CA2394969A1 (en) 2001-07-05
KR20020062992A (en) 2002-07-31
BR0016724A (en) 2002-09-03
DK1244873T3 (en) 2004-08-09
ES2217026T3 (en) 2004-11-01
NO20023018L (en) 2002-08-19
DE50006190D1 (en) 2004-05-27
ATE265000T1 (en) 2004-05-15
EP1244873A1 (en) 2002-10-02
US7481624B2 (en) 2009-01-27
PT1244873E (en) 2004-08-31
DE19962989A1 (en) 2001-07-05
EP1244873B1 (en) 2004-04-21
JP2003518586A (en) 2003-06-10
NO20023018D0 (en) 2002-06-21
CA2394969C (en) 2005-06-07
WO2001048378A1 (en) 2001-07-05
US20060083611A1 (en) 2006-04-20

Similar Documents

Publication Publication Date Title
US20030138290A1 (en) Butt joint for hollow profiles
US8511996B2 (en) Blade for wind-power generator formed by attaching multiple independent sections utilizing connection means at the end of each opposing sections
US4412784A (en) Monocoque type rotor blade
EP1398499B1 (en) Attachment of rotor blades to the hub of a wind turbine
US3556673A (en) Rotor mounting
CA2589255C (en) Method and connecting piece for assembling windmill blade sections
EP0019691B1 (en) Composite rotor blade
US6443701B1 (en) Blade root for propeller and rotor blades
CN109642549B (en) Tower section, tower, wind energy plant, and method for producing a tower section and for connecting tower sections
US20180051672A1 (en) Jointed rotor blade for wind turbine
CN102032125A (en) Wind turbine blade
WO2006039953A1 (en) Rotor blade for a wind power system
CN102439250B (en) Composite connection for a wind turbine tower structure
JP7101769B2 (en) An annular bracket for external tensioning of tower segments and external tensioning system for hybrid towers
DE102007036917A1 (en) Rotor blade for wind power plant i.e. floating wind power plant, has clamping member arranged on pillar such that effective cross section holds additional compressive strength to anticipate stress-dependent deformation due to wind load
CN103765004B (en) For connecting the connection system of the member segments of wind turbine blade
US20230086143A1 (en) Wind turbine rotor blade and method for assembling a wind turbine rotor blade
US20220260051A1 (en) Connection for split wind turbine blade
EP4065835A1 (en) Modular wind turbine blade
EP3851666B1 (en) Root portion of a wind turbine blade, wind turbine blade, root assembly and wind turbine
US8375675B1 (en) Truss beam having convex-curved rods, shear web panels, and self-aligning adapters
EP4065834A1 (en) Modular wind turbine blade
WO2022022788A1 (en) Wind turbine blade portion connector

Legal Events

Date Code Title Description
STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION