NL1019943C2 - Stand for carrying out work on wind turbines, comprises frame with movable bridge and clamping mechanism for securing stand to turbine mast - Google Patents
Stand for carrying out work on wind turbines, comprises frame with movable bridge and clamping mechanism for securing stand to turbine mast Download PDFInfo
- Publication number
- NL1019943C2 NL1019943C2 NL1019943A NL1019943A NL1019943C2 NL 1019943 C2 NL1019943 C2 NL 1019943C2 NL 1019943 A NL1019943 A NL 1019943A NL 1019943 A NL1019943 A NL 1019943A NL 1019943 C2 NL1019943 C2 NL 1019943C2
- Authority
- NL
- Netherlands
- Prior art keywords
- stand
- mast
- frame
- clamping
- scaffold
- Prior art date
Links
- 238000007689 inspection Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G3/00—Scaffolds essentially supported by building constructions, e.g. adjustable in height
- E04G3/28—Mobile scaffolds; Scaffolds with mobile platforms
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G3/00—Scaffolds essentially supported by building constructions, e.g. adjustable in height
- E04G3/24—Scaffolds essentially supported by building constructions, e.g. adjustable in height specially adapted for particular parts of buildings or for buildings of particular shape, e.g. chimney stacks or pylons
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G3/00—Scaffolds essentially supported by building constructions, e.g. adjustable in height
- E04G3/24—Scaffolds essentially supported by building constructions, e.g. adjustable in height specially adapted for particular parts of buildings or for buildings of particular shape, e.g. chimney stacks or pylons
- E04G3/243—Scaffolds essentially supported by building constructions, e.g. adjustable in height specially adapted for particular parts of buildings or for buildings of particular shape, e.g. chimney stacks or pylons following the outside contour of a building
-
- 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
-
- 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
- F05B2230/00—Manufacture
- F05B2230/60—Assembly methods
- F05B2230/61—Assembly methods using auxiliary equipment for lifting or holding
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2230/00—Manufacture
- F05B2230/80—Repairing, retrofitting or upgrading methods
-
- 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
Abstract
Description
STELLAGE VOOR HET UITVOEREN VAN WERKZAAMHEDEN AAN WINDMOLENSSCOPE FOR PERFORMING WORK ON WINDMILLS
De uitvinding betreft een stellage voor het uitvoeren van werkzaamheden aan windmolens. Het is noodzakelijk om windmolens, die gebruikt worden voor het opwekken van elektriciteit, regelmatig te inspecteren.The invention relates to a scaffold for performing work on wind turbines. It is necessary to regularly inspect wind turbines that are used to generate electricity.
5 Bij deze inspectie dienen de rotorbladen en bij voorkeur tevens de mast van de windmolen gecontroleerd te worden.During this inspection the rotor blades and preferably also the mast of the windmill must be checked.
Voor een dergelijke inspectie is het gebruikelijk kabels te bevestigen aan de gondel van de windmolen, waarna men aan deze kabels een langwerpige bak 10 omhoog kan hijsen. Een dergelijke bak vertoont grote gelijkenissen met de langwerpige bakken die gebruikt worden door glazenwassers voor het reinigen van de ruiten van een gebouw.For such an inspection it is customary to attach cables to the gondola of the windmill, after which an elongated tray 10 can be hoisted on these cables. Such a container has great similarities with the elongated containers used by window cleaners for cleaning the windows of a building.
Dergelijke stellages hebben het nadeel, dat ze 15 gebruikt kunnen worden tot een zeer beperkte windsnelheid. Boven deze windsnelheid is de stabiliteit van dergelijke stellages bijzonder klein. Dergelijke stellages hebben verder het nadeel dat slechts een enkele zijde geïnspecteerd kan worden. Dit kan de zijde van de 20 mast zijn of de zijde van een rotorblad. Bij kleine rotorbladen is dan nog wel mogelijk om om het blad heen te reiken om zo ook de andere zijde van het rotorblad te inspecteren. Bij grotere rotorbladen is dat echter niet meer mogelijk.Such scaffolds have the disadvantage that they can be used to a very limited wind speed. Above this wind speed, the stability of such scaffolding is particularly low. Such scaffolds further have the disadvantage that only a single side can be inspected. This can be the side of the mast or the side of a rotor blade. With small rotor blades, it is then still possible to reach around the blade in order to also inspect the other side of the rotor blade. With larger rotor blades, however, this is no longer possible.
25 Daarbij komt verder dat de rotorbladen niet evenwijdig lopen aan de mast. Dit om te voorkomen dat door doorbuiging van de rotorbladen bij windbelasting, de uiteinden van de rotorbladen niet in aanraking komen met de mast. Dit betekent dat een langwerpige bak aan de 30 onderzijde van het rotorblad verder verwijderd is dan nabij de gondel.In addition, the rotor blades do not run parallel to the mast. This is to prevent that the ends of the rotor blades do not come into contact with the mast due to bending of the rotor blades under wind load. This means that an elongated tray on the underside of the rotor blade is further removed than near the gondola.
1 0 1 H i'j 4 ^ 21 0 1 H ij 4 ^ 2
Het is een doel van de uitvinding een stellage te verschaffen die althans een deel van de bovengenoemde nadelen vermindert of zelfs voorkomt.It is an object of the invention to provide a scaffold that at least partially reduces or even eliminates the above-mentioned disadvantages.
Dit doel wordt bereikt met een stellage, die 5 omvat: - een frame; - aan het frame aangebrachte klemmiddelen voor het op de mast van de windmolen klemmen van de stellage; en 10 - een op het frame verplaatsbaar loopbrugdeel.This object is achieved with a scaffold, which comprises: - a frame; - clamping means arranged on the frame for clamping the scaffolding on the mast of the windmill; and a walkway part movable on the frame.
Door de klemmiddelen is het mogelijk de stellage stabiel te bevestigen aan de windmolenmast. Zo wordt het mogelijk om ook bij hogere windsnelheden werkzaamheden uit te voeren aan de windmolen. Het 15 verplaatsbare loopbrugdeel maakt het mogelijk om te compenseren voor de niet-parallelle stand van de rotorbladen ten opzichte van de mast.The clamping means make it possible to stably attach the scaffolding to the windmill mast. This makes it possible to carry out work on the windmill even at higher wind speeds. The movable walkway part makes it possible to compensate for the non-parallel position of the rotor blades relative to the mast.
In een voorkeursuitvoeringsvorm van de stellage volgens de uitvinding omvat het loopbrugdeel een centrale 20 opening voor doorgang van een rotorblad. Met een dergelijk loopbrugdeel is het mogelijk om rondom het rotorblad te lopen en zo in één hijsgang van de stellage langs een rotorblad het gehele rotorblad aan beide zijden te inspecteren.In a preferred embodiment of the scaffold according to the invention, the walkway part comprises a central opening for passage of a rotor blade. With such a walkway part it is possible to walk around the rotor blade and thus inspect the entire rotor blade on both sides in one hoisting run of the scaffolding along a rotor blade.
25 In een andere uitvoeringsvorm van de stellage volgens de uitvinding omvatten de klemmiddelen ten minste één loopbrugdeel. Zo wordt het mogelijk om rondom de mast te lopen en daar werkzaamheden uit te voeren. Zo kan aldus in één hijsgang zowel het rotorblad als de mast 30 geïnspecteerd worden. Bij voorkeur omvatten de klemmiddelen een aantal, in een horizontaal vlak scharnierend met elkaar verbonden brugdelen. Zo kunnen de verschillende brugdelen zich goed aanpassen aan de vormgeving van de mast, waardoor een goede aanligging van 35 de brugdelen tegen de mast verkregen wordt.In another embodiment of the scaffold according to the invention, the clamping means comprise at least one walkway part. This makes it possible to walk around the mast and perform work there. Thus, both the rotor blade and the mast 30 can be inspected in one hoisting run. The clamping means preferably comprise a number of bridge parts hingedly connected to each other in a horizontal plane. The different bridge parts can thus adapt well to the design of the mast, whereby a good abutment of the bridge parts against the mast is obtained.
In nog een andere voorkeursuitvoeringsvorm van de stellage volgens de uitvinding omvatten de klemmiddelen een eerste klemdeel en een tweede klemdeel, 3 elk scharnierend verbonden met het frame. Deze twee klemdelen werken als een soort tang, waarmee de stellage de mast van de windmolen kan vastgrijpen.In yet another preferred embodiment of the scaffold according to the invention, the clamping means comprise a first clamping part and a second clamping part, each hinged to the frame. These two clamping parts act as a kind of tongs with which the scaffolding can grasp the mast of the windmill.
Tenslotte is bij voorkeur de stellage in 5 hoofdzaak vervaardigd uit kunststof. Hierdoor wordt een lichte constructie verkregen, zodat de stellage gemakkelijk te vervoeren is en ook aan de windmolen gehangen kan worden, zonder extra versteviging van de windmolen.Finally, the scaffold is preferably substantially made of plastic. A light construction is hereby obtained, so that the scaffolding is easy to transport and can also be hung on the windmill, without additional reinforcement of the windmill.
10 Deze en andere kenmerken van de uitvinding worden nader toegelicht aan de hand van de bijgaande tekeningen.These and other features of the invention are further elucidated with reference to the accompanying drawings.
Fig. 1 toont in perspectivisch aanzicht de stellage volgens de uitvinding.FIG. 1 shows the scaffold according to the invention in perspective view.
15 Fig. 2 toont de stellage van fig. 1 op een positie, waarbij de tip van een rotorblad juist door het brugdeel steekt.FIG. 2 shows the scaffolding of FIG. 1 at a position where the tip of a rotor blade protrudes just through the bridge part.
Fig. 3 toont in perspectivisch aanzicht de stellage volgens fig. 1 nabij de gondel van een 20 windmolen.FIG. 3 shows in perspective view the scaffolding according to fig. 1 near the gondola of a windmill.
In fig. 1 wordt de stellage 1 volgens de uitvinding getoond. De stellage 1 omvat een frame 2 waarop een brugdeel 3 verplaatsbaar is aangebracht.Fig. 1 shows the scaffold 1 according to the invention. The scaffold 1 comprises a frame 2 on which a bridge part 3 is arranged so as to be movable.
Verder is scharnierend aan het frame 2 een eerste 25 klemdeel 4 aangebracht. Dit eerste klemdeel 4 klemt rond de mast 5 van de windmolen.A first clamping part 4 is furthermore hinged to the frame 2. This first clamping part 4 clamps around the mast 5 of the windmill.
In fig. 2 is tevens een deel van het tweede klemdeel 5 te zien. Elk klemdeel 4, 5 bestaat uit een aantal scharnierend met elkaar verbonden brugdelen 6. Het 30 uiteinde van het eerste klemdeel 4 en het uiteinde van het tweede klemdeel 7 zijn in hoogte ten opzichte van elkaar versprongen. Zo kan er een overlap ontstaan tussen het eerste klemdeel 4 en het tweede klemdeel 7. Dit is met name van belang bij een mast die naar boven toe taps 35 toeloopt.Fig. 2 also shows a part of the second clamping part 5. Each clamping part 4, 5 consists of a number of hingedly connected bridge parts 6. The end of the first clamping part 4 and the end of the second clamping part 7 are offset in height relative to each other. For example, an overlap can occur between the first clamping part 4 and the second clamping part 7. This is particularly important with a mast tapered upwards.
Het op het frame 2 verplaatsbare brugdeel 3 heeft een centrale opening 8 waardoor heen een rotorblad 9 steekt. Duidelijk is te zien dat het verplaatsbare . 4 brugdeel 3 zich aan het vrije einde van het framedeel 2 bevindt. Wanneer nu de stellage 1 verder omhoog getakeld wordt verricht in de gondel 10 (zie fig. 3) van de windmolen, dan dient het verplaatsbare brugdeel 3 5 verplaatst te worden naar de mast 5.The bridge part 3 movable on the frame 2 has a central opening 8 through which a rotor blade 9 projects. You can clearly see that it is movable. 4 bridge part 3 is located at the free end of the frame part 2. If the scaffolding 1 is now raised further up in the gondola 10 (see Fig. 3) of the windmill, the movable bridge part 3 must be moved to the mast 5.
Verder is in fig. 3 duidelijk te zien dat in verticale richting gezien het eerste klemdeel 4 en het tweede klemdeel 7 elkaar overlappen.Furthermore, it can be clearly seen in Fig. 3 that, viewed in the vertical direction, the first clamping part 4 and the second clamping part 7 overlap.
De volledige stellage is voorzien van hekwerken 10 ter beveiliging van de personen, die zich op de stellage bevinden. Aangezien beide klemdelen 4 en 7 bestaan uit brugdelen en in combinatie met het verplaatsbare brugdeel 3 is het mogelijk om in één hijsgang zowel met volledige rotorblad 9 als de mast 5 te inspecteren en eventuele 15 andere werkzaamheden daar uit te voeren.The entire scaffolding is provided with fencing 10 for protecting the people who are on the scaffolding. Since both clamping parts 4 and 7 consist of bridge parts and in combination with the movable bridge part 3, it is possible to inspect both with complete rotor blade 9 and the mast 5 in one hoisting run and to perform any other work there.
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Claims (6)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL1019943A NL1019943C2 (en) | 2002-02-11 | 2002-02-11 | Stand for carrying out work on wind turbines, comprises frame with movable bridge and clamping mechanism for securing stand to turbine mast |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL1019943A NL1019943C2 (en) | 2002-02-11 | 2002-02-11 | Stand for carrying out work on wind turbines, comprises frame with movable bridge and clamping mechanism for securing stand to turbine mast |
NL1019943 | 2002-02-11 |
Publications (1)
Publication Number | Publication Date |
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NL1019943C2 true NL1019943C2 (en) | 2003-08-13 |
Family
ID=28036281
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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NL1019943A NL1019943C2 (en) | 2002-02-11 | 2002-02-11 | Stand for carrying out work on wind turbines, comprises frame with movable bridge and clamping mechanism for securing stand to turbine mast |
Country Status (1)
Country | Link |
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NL (1) | NL1019943C2 (en) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1516846A2 (en) * | 2003-09-19 | 2005-03-23 | PERI, S.A. Sociedad Unipersonal | Lifting device for lifting persons along the shaft of a wind generator. |
WO2007085265A1 (en) * | 2006-01-27 | 2007-08-02 | Pp Energy Aps | Device for enabling access to a structure above ground level |
WO2008090246A1 (en) * | 2007-01-26 | 2008-07-31 | Marco Antonio Rio Orta | Semi-automatic platform for painting wind generator towers |
WO2009121792A2 (en) * | 2008-04-02 | 2009-10-08 | Skyspider Aps | Maintenance platform for wind turbines |
EP2581336A1 (en) * | 2010-06-09 | 2013-04-17 | Sinovel Wind Group Co., Ltd | Multifunctional platform of wind power generating unit and blade disassembling method |
DE102013107374A1 (en) * | 2013-07-11 | 2015-01-15 | Universität Kassel | Device for inspecting a wind turbine |
WO2015090282A1 (en) * | 2013-12-18 | 2015-06-25 | Holger Mueller | Retaining, lifting, and securing device for attaching to tall tower-like structures |
WO2018137733A1 (en) * | 2017-01-25 | 2018-08-02 | WP Systems GmbH | Rotor blade access system and method for positioning the maintenance chamber of a rotor blade access system |
WO2021242158A1 (en) * | 2020-05-26 | 2021-12-02 | Kjell Lindskog | Arrangement for work on blades or wings at a wind turbine |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4311434A (en) * | 1980-04-07 | 1982-01-19 | Agency Of Industrial Science & Technology | Wind turbine |
DE4339638A1 (en) * | 1993-11-20 | 1995-05-24 | Jan Luttuschka | External access equipment to wall of circular structure |
DE29603278U1 (en) * | 1996-02-23 | 1996-04-25 | Beyer Reinhard | Device for cleaning rotor blades of wind turbines |
US5913340A (en) * | 1997-09-15 | 1999-06-22 | Composite Structures, Inc. | Walkway platform |
GB2356355A (en) * | 1999-11-22 | 2001-05-23 | Nicholas Woodmansey | Portable mast climbing device |
-
2002
- 2002-02-11 NL NL1019943A patent/NL1019943C2/en not_active IP Right Cessation
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4311434A (en) * | 1980-04-07 | 1982-01-19 | Agency Of Industrial Science & Technology | Wind turbine |
DE4339638A1 (en) * | 1993-11-20 | 1995-05-24 | Jan Luttuschka | External access equipment to wall of circular structure |
DE29603278U1 (en) * | 1996-02-23 | 1996-04-25 | Beyer Reinhard | Device for cleaning rotor blades of wind turbines |
US5913340A (en) * | 1997-09-15 | 1999-06-22 | Composite Structures, Inc. | Walkway platform |
GB2356355A (en) * | 1999-11-22 | 2001-05-23 | Nicholas Woodmansey | Portable mast climbing device |
Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1516846A2 (en) * | 2003-09-19 | 2005-03-23 | PERI, S.A. Sociedad Unipersonal | Lifting device for lifting persons along the shaft of a wind generator. |
ES2244292A1 (en) * | 2003-09-19 | 2005-12-01 | Peri, S.A. | Lifting device for lifting persons along the shaft of a wind generator. |
EP1516846A3 (en) * | 2003-09-19 | 2006-11-29 | PERI, S.A. Sociedad Unipersonal | Lifting device for lifting persons along the shaft of a wind generator. |
WO2007085265A1 (en) * | 2006-01-27 | 2007-08-02 | Pp Energy Aps | Device for enabling access to a structure above ground level |
WO2008090246A1 (en) * | 2007-01-26 | 2008-07-31 | Marco Antonio Rio Orta | Semi-automatic platform for painting wind generator towers |
WO2009121792A2 (en) * | 2008-04-02 | 2009-10-08 | Skyspider Aps | Maintenance platform for wind turbines |
WO2009121792A3 (en) * | 2008-04-02 | 2010-09-10 | Skyspider Aps | Maintenance platform for wind turbines |
EP2581336A1 (en) * | 2010-06-09 | 2013-04-17 | Sinovel Wind Group Co., Ltd | Multifunctional platform of wind power generating unit and blade disassembling method |
EP2581336A4 (en) * | 2010-06-09 | 2014-03-12 | Sinovel Wind Group Co Ltd | Multifunctional platform of wind power generating unit and blade disassembling method |
DE102013107374A1 (en) * | 2013-07-11 | 2015-01-15 | Universität Kassel | Device for inspecting a wind turbine |
WO2015003694A1 (en) * | 2013-07-11 | 2015-01-15 | Universität Kassel | Device for inspecting a wind turbine |
WO2015090282A1 (en) * | 2013-12-18 | 2015-06-25 | Holger Mueller | Retaining, lifting, and securing device for attaching to tall tower-like structures |
WO2018137733A1 (en) * | 2017-01-25 | 2018-08-02 | WP Systems GmbH | Rotor blade access system and method for positioning the maintenance chamber of a rotor blade access system |
WO2021242158A1 (en) * | 2020-05-26 | 2021-12-02 | Kjell Lindskog | Arrangement for work on blades or wings at a wind turbine |
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