CN1319071A - Divice for carrying out repair and service work, especially on rotor blades of wide turbine generators - Google Patents

Divice for carrying out repair and service work, especially on rotor blades of wide turbine generators Download PDF

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Publication number
CN1319071A
CN1319071A CN99811252A CN99811252A CN1319071A CN 1319071 A CN1319071 A CN 1319071A CN 99811252 A CN99811252 A CN 99811252A CN 99811252 A CN99811252 A CN 99811252A CN 1319071 A CN1319071 A CN 1319071A
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CN
China
Prior art keywords
operating room
rotating blade
power plant
wind power
described device
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.)
Pending
Application number
CN99811252A
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Chinese (zh)
Inventor
安东尼厄斯·西伯特
克劳斯·罗博
汉斯－于尔根·桑德
马库斯·梅舍
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Individual
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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
Priority claimed from DE29819391U external-priority patent/DE29819391U1/en
Priority claimed from DE19909698A external-priority patent/DE19909698C2/en
Application filed by Individual filed Critical Individual
Publication of CN1319071A publication Critical patent/CN1319071A/en
Pending legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F11/00—Lifting devices specially adapted for particular uses not otherwise provided for
    • B66F11/04—Lifting devices specially adapted for particular uses not otherwise provided for for movable platforms or cabins, e.g. on vehicles, permitting workmen to place themselves in any desired position for carrying out required operations
    • B66F11/044—Working platforms suspended from booms
    • 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
    • F03D13/20—Arrangements for mounting or supporting wind motors; Masts or towers for 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
    • F03D80/50—Maintenance or repair
    • 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
    • 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
    • Y02E10/728—Onshore wind turbines

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

Abstract

A device for carrying out repair and service work on objects that are exposed to the effects of the weather. The inventive device is made of plastic, aluminium or the like, and is especially designed for carrying out maintenance and renovation work on rotary blades of wind turbine generators. The aim of the invention is to enable maintenance and repair work to be carried out on said objects during all types of weather conditions. This is achieved by means of a working cabin that accommodates areas of the rotor blades. Said working cabin includes sealing devices that seal off the cabin from the effects of the environment in the work location.

Description

Especially the device that the rotating blade of wind power plant is maintained
The present invention relates to bearing that the wind solarization drenches with rain and maintain and device that especially the rotating blade of wind power plant is maintained by the object that fiber reinforced plastics, aluminium etc. constitutes.
When maintenance non-metallic material surperficial, generally must keep specific condition.Therefore, for example " Germanische Lloyd " provided and the so relevant rules of member of maintenance.
In order to adapt to all these characteristics, for example when the rotating blade of maintenance wind power plant, to pull down rotating blade and transport the workshop to as everyone knows, so that so form external environment there, promptly observe the standard and the rule of " Germanische Lloyd ".Cost related is appreciable with it, and the floor time of wind power plant is also long, and therefore, people try every possible means and make great efforts attempting directly to use the maintenance device on the position of rotor.
, known such service bench here, they for example can pass through winch and lifting on the wind power plant pillar, and they surround a rotating blade usually simultaneously.Such device has been described in DE4339638M.DE29603278U1 has described similar device, it is characterized in that, when the 3rd rotating blade of maintenance, suspension apparatus is fixed on the root of two rotating blades in the sensing, and its precondition is that wind power plant becomes three blade plan forms.
The common defects of these bench board is exactly that they can only use when weather is good, because otherwise just can not observe the parameter of " Germanische Lloyd " defined.
, the purpose of this invention is to provide a kind of like this device here, in fact it can maintain such object in any environment.
Utilize the device of the above-mentioned type, can so realize above-mentioned purpose, promptly be provided with an operating room that puts rotating blade part, it has and is used to make operating room and place, place of erection external environment to completely cut off the sealing arrangement of opening.
In the operating room that surrounds a rotating blade part, can regulate and carry out all required parameters of work.Therefore, for example can regulate temperature, air humidity etc.
By having obtained design plan of the present invention in the dependent claims.Therefore, when operating room's cross-sectional plane roughly became U-shaped and have stop motion mechnism of an active operation lid that becomes U-shaped in birds-eye view and the open region between the free U-shaped supporting leg in operating room, this was particularly advantageous.
Obviously, this device can be equipped with elevator, is equipped with winch as described in the prior art, perhaps jib boom etc.Because rotating blade passes the operating room, it also has sealing member in bottom and top, and wherein these sealing members are made of many push rods from dead position immigration sealing station.At this, it is suitable that the push rod common ends is equipped with an inflatable flexible pipe spare, so that the operating room is opened with environment is isolated well.The operation of this push rod can realize by pneumatic, hydraulic pressure, magnetic force or electronic mode.
If the operating room is as can being equipped with to regulation an air conditioner in particular for heating and ventilation air draft equally in other design plan of the present invention, then this is favourable.
In addition, characteristics of operating room may be, have been equipped with a grabbing device that is used for fixing a rotating blade for the operating room of band elevator, so that can dismantle rotating blade and together rotating blade is dropped on the ground with the operating room in the operating room.
Another design plan of the present invention may be that the operating room is designed to fix, carry, vertically rotate the shape of the sliding machine of a rotating blade.Utilize such design plan, can pull down rotating blade earlier, wherein deposit described rotating blade by the operating room.At this, feedway can be set, it moves rotating blade when taking off rotating blade or dismounting from the wind power plant pillar in the operating room, thereby has roughly obtained the central center of gravity of total system.Operating room's lifters subsequently earthward direction descend and the operating room descended, promptly the operating room can be used as sliding machine.
Another is replaced design plan and is, elevator is designed to a rail system that is fixed and/or can be fixed on the wind power plant pillar, it has the wire rope traction device that is used for the transportation work chamber, wherein for example track can be designed to be the scalable component part of transport vehicle structure.
Utilize such design plan, can utilize the pillar supporting ability to make operating room of the present invention motion.According to place of erection and design, track also can be the one component part of pillar.
Also stipulating in other design plan, rail system can be equipped with the anchor fitting that is used for fixing on the pillar of wind power plant as the present invention.
According to following explanation and in conjunction with the accompanying drawings, further feature of the present invention, details and advantage have been obtained.These figure have represented very simplifiedly:
Fig. 1 represents to be in apparatus of the present invention on the control position with lateral plan;
Fig. 2 represents to be in the operating room of opening-wide state with birds-eye view;
Fig. 3 birds-eye view represents to be in the operating room of closed state;
Fig. 4 represents the operating room with the IV-IV section drawing along Fig. 2;
Fig. 5 represents the operating room with the V-V section drawing along Fig. 3;
Fig. 6 is the lateral plan that rail system is installed in the wind power plant on the pillar.
Fig. 1 represents to be in the wind power plant maintenance unit 1 on wind power plant 2 control positioies.Wind power plant 2 comprises a pillar 3, and rotor 4 is installed in the area at an upper portion thereof.It has three and is fixed on a rotating blade 5 on the sleeve 6.Sleeve 6 equally also is that the rotating shaft of rotor 4 for example links to each other with same unshowned electrical generator by unshowned variable-speed drive together and by known methods.The driving of sleeve 6 is design-calculated like this as everyone knows, promptly can stop it on many positions, thereby for example can be rotated the dismounting of blade 5.
Wind power plant maintenance unit l comprises an operating room 7, and it links to each other with vehicle 9 by lifting arm 8.Vehicle 9 can be designed to automatic Lkw or for example be designed to trailer with accessory equipment.Lifting arm 8 comprises many arm sections 10, and they link to each other by hinge 11.In the embodiment shown, adopted three arm sections 10, but the number of arm section 10 can change arbitrarily generally.The arm section itself is designed to the form of telescopic boom, and therefore, operating room's 7 accessible critical altitudes can increase.Hinge 11 for example can move by hydraulic actuating cylinder.
Fig. 2 shows the operating room 7 with first structure with birds-eye view.It comprises and is fixed on together a cross wall 12 on the arm section 10 firmly.The both sides away from arm section 10 at cross wall 12 are provided with a longitudinal wall 13 respectively.On side and the downside, as illustrated in fig. 4, the cross section becomes base plate 14 and a cover plate 15 of U-shaped to cover the operating room respectively thereon.Simultaneously, operating room 7 has a slot cut part 16, and rotating blade 5 can insert in the described slot cut portion.Under the fixing state of rotor 4, rotating blade 5 can move into control position shown in Figure 2 by the motion of lifting arm 8 by operating room 7.
Not only in base plate 14 zones, and in cover plate 15 zones, operating room 7 has a flexible pipe spare 17 that is installed in U-shaped portion both sides.They can inflations and are pressed towards the surface of rotating blade 5 by push rod 18, referring to Fig. 3.Push rod 18 for example can be by hydraulic pressure or air pressure motion.Push rod 18 is installed in base plate 14 or the cover plate 15 for this reason versatilely.Also can adopt a plurality of bigger plate sections here as the substitute mode of using a plurality of single push rods 18.
Fig. 3 has drawn and has been in hermetically-sealed construction on the detent position when flexible pipe spare 17 leans against on the rotating blade 5.At this, be installed in away from the slide 19 on that side of the operating room 7 of arm section 10 work 7 is hedged off from the outer world.In this structure, operating room 7 is hedged off from the outer world as far as possible, thereby not the enclosure portion of rotating blade 5 is keeped in repair by extraneous weather effect ground.
Fig. 4 is with drawn first structure of operating room 7 shown in Figure 2 of the section drawing along IV-IV.Fig. 5 has correspondingly drawn with the section drawing along V-V and has had the operating room 7 of second structure as illustrated in fig. 3.Shown in these two figure, rotating blade 5 also can be positioned in the incision tract 16 of operating room 7 on a position of obviously departing from vertical surface.
Subsequently, the method for keeping in repair wind power plant by said apparatus is described.In the Fig. 2 or first structure shown in Figure 4, make operating room 7 enter such position by lifting arm 8, promptly the rotating blade that roughly quilt is stopped on the vertical position that refers to down is in the incision tract 16.Then, by push rod 18 flexible pipe spare 17 is pressed to the surface of rotating blade 5, thereby the inner chamber of operating room 7 is hedged off from the outer world as far as possible.Now, can irrespectively in operating room 7, carry out maintenance with weather to rotating blade 5.
In addition, operating room 7 is equipped with aspirator, carries out sandblast processing or ground finish thereby for example can not influence environment ground.In case process one section rotating blade 5, then make flexible pipe spare 17 leave the surface of rotating blade 5, thereby operating room 7 is by changing in Fig. 2 or the configuration structure shown in Figure 4.In this configuration structure, operating room 7 can move also along rotating blade 5 can enter a new location.
By flexible pipe spare 17 being pressed to the surface of rotating blade 5, so can on desirable new location, form a sealing operating room again.So, can little by little cover whole rotating blade 5 with operating room 7.Rotate and stop again by rotor 4, also can correspondingly handle other rotating blade 5.
, be not shown specifically the scheme that operating room 7 is equipped with a grabbing device here, described grabbing device allows to fix the rotating blade of pulling down 5, so that can fall described rotating blade on the ground by elevator 8.At this, operating room 7 is designed to so-called " sliding machine ", and it has the wheel that is fixed on the rear wall, thereby the rotating blade that is removed can be sent to places such as workshop by the operating room.
A replacement type design plan of the apparatus of the present invention of having drawn in Fig. 6, wherein the parts that all functions are identical have and identical in the above description mark.
It here also is the rotating blade 5 that totally is used for keeping in repair and clearing up wind power plant (totally representing) rotor 4 with 2 in the upper end of pillar 3 with 1 device of representing.According to this flexible program, can be placed or be fixed on the pillar 3 from 9, one rail systems 20 of a vehicle, the balladeur train 21 of band operating room 7 can be installed on the rail system movably.
The with dashed lines wire rope traction device 22 that drawn schematically only, operating room 7 can rely on the rise and fall of described wire rope traction device, and corresponding winch for example can be positioned on the vehicle 9.
In Fig. 6, represent such situation by another elbow arm 23, promptly can be designed to be the one component part of vehicle 9 to rail system 20, can roughly become the form of scaling ladder etc., can certainly become the form of plug assembly to come segmentation to install.The clip shape parts 24 that drawn in the figure can be fixed on rail system on the pillar with these parts.
Certainly, can also change the above embodiment of the present invention in many aspects, and not exceed the basis design.Therefore, for example can movably be installed in operating room's 7 levels on the balladeur train 21, so that different spacing of the relative pillar of rotating blade that can balance may occur etc.

Claims (13)

1. one kind is shone the device drench with rain and maintained and especially the rotating blade of wind power plant is maintained by the object that fiber reinforced materials, aluminium etc. is made to bearing wind, it is characterized in that, be provided with an operating room (7) that puts rotating blade (5) part, it has and is used to make the isolated sealing arrangement of opening (17-19) of operating room (7) and attachment point place external environment.
2. device as claimed in claim 1, it is characterized in that the cross-sectional plane of operating room (7) roughly becomes U-shaped and have one to become the active operation lid of U-shaped and a stop motion mechnism (19) of the open region between the free U-shaped supporting leg in operating room in birds-eye view.
3. device as claimed in claim 1 or 2 is characterized in that, is provided with an elevator (8) that is used for guiding operating room (7) in the length range of a rotating blade (5).
4. the described device of one of claim as described above is characterized in that, is provided with many push rods (18) that can move into sealing station from dead position in the bottom section of operating room (7) and top area (14,15).
5. the described device of one of claim as described above is characterized in that the free front end of all adjacent push rods (18) is equipped with a shared inflated hose spare (17).
6. the described device of one of claim as described above is characterized in that, realizes sealing the operation of push rod (18) by pneumatic, hydraulic pressure, magnetic force or electronic mode.
7. the described device of one of claim as described above is characterized in that, operating room (7) are equipped with an air-conditioning in particular for heating and ventilation air draft.
8. the described device of one of claim as described above is characterized in that, has been equipped with a grabbing device that is used for fixing a rotating blade for the operating room (7) of band elevator.
9. the described device of one of claim as described above is characterized in that, it is the part of vehicle (9) that the operating room (7) of band elevator (8) is designed to.
10. the described device of one of claim as described above is characterized in that operating room (7) are designed to fix, carry, vertically rotate the sliding machine shape of a rotating blade (5).
11. the described device of one of claim as described above, it is characterized in that, elevator (8 ') is designed to a rail system (20) on the wind power plant pillar (3) that is fixed and/or can be fixed on, and it has the wire rope traction device (21) that is used for transportation work chamber (7).
12. device as claimed in claim 11 is characterized in that, rail system (20) is designed to the telescopic component part of a transport vehicle structure.
13., it is characterized in that rail system (20) is equipped with the anchor fitting (24) that is used for fixing on the pillar of wind power plant as claim 11 or 12 described devices.
CN99811252A 1998-09-22 1999-09-08 Divice for carrying out repair and service work, especially on rotor blades of wide turbine generators Pending CN1319071A (en)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
DE29816942 1998-09-22
DE29816942.8 1998-09-22
DE29819391.4 1998-10-30
DE29819391U DE29819391U1 (en) 1998-09-22 1998-10-30 Device for carrying out repairs and services, in particular on rotor blades of wind turbines
DE19909698.8 1999-03-05
DE19909698A DE19909698C2 (en) 1998-09-22 1999-03-05 Device for carrying out repairs and services, in particular on rotor blades of wind turbines

Publications (1)

Publication Number Publication Date
CN1319071A true CN1319071A (en) 2001-10-24

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ID=27219011

Family Applications (1)

Application Number Title Priority Date Filing Date
CN99811252A Pending CN1319071A (en) 1998-09-22 1999-09-08 Divice for carrying out repair and service work, especially on rotor blades of wide turbine generators

Country Status (6)

Country Link
EP (1) EP1115644A1 (en)
CN (1) CN1319071A (en)
AU (1) AU5974799A (en)
BR (1) BR9914015A (en)
CA (1) CA2341398A1 (en)
WO (1) WO2000017086A1 (en)

Cited By (6)

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CN101920252A (en) * 2009-06-16 2010-12-22 通用电气公司 Be used for wind turbine rotor blade is cleaned method and apparatus with deicing
CN102536671A (en) * 2010-12-20 2012-07-04 西门子公司 Wind turbine, method of control of a wind turbine and air-conditioning system
CN102530428A (en) * 2010-10-15 2012-07-04 Bnsf铁路公司 Method and apparatus for transporting wind turbine blades
CN102941576A (en) * 2012-10-10 2013-02-27 河北工业大学 Pole climbing robot for wind power tower pole
CN103597203A (en) * 2011-06-09 2014-02-19 Pp能源有限责任公司 Lifting device for connecting two rotor blade segments of a wind turbine
CN109416024A (en) * 2016-06-17 2019-03-01 Wp系统有限公司 Rotor blade repair apparatus

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DE10225025A1 (en) 2002-06-06 2003-12-24 Aloys Wobben Device for handling rotor blades
DE10311674B4 (en) 2003-03-11 2007-02-01 aeroconcept Ingenieurgesellschaft für Luftfahrttechnik und Faserverbundtechnologie mbH maintenance platform
US7721434B2 (en) 2005-07-27 2010-05-25 General Electric Company Methods and apparatus for replacing objects on horizontal shafts in elevated locations
DE102008053404A1 (en) * 2008-10-27 2010-04-29 Ed. Züblin Ag Method for transporting a rotor blade of a wind energy plant and transport device for carrying out the method
EP2414671B1 (en) * 2009-04-02 2021-10-13 LM Wind Power A/S Work platform
US8397382B2 (en) 2010-01-08 2013-03-19 Sky Climber Wind Solutions Llc Method of repairing a wind turbine blade
NL2004871C2 (en) * 2010-06-10 2011-12-13 Special Blade Service B V MAIN WORKER FOR WIND TURBINES.
FI20106163A0 (en) * 2010-11-05 2010-11-05 Bronto Skylift Oy Ab Personal Basket, Personnel Lift and Method of Accessing the Personal Basket
US20110140060A1 (en) * 2010-11-29 2011-06-16 General Electric Company System and method for locating a maintenance device approximate an area of interest of a wind turbine
US8579085B2 (en) 2010-12-29 2013-11-12 Sky Climber Llc Suspended access chair with rescue system
ES2485592B1 (en) * 2013-02-12 2015-05-20 Global Energy Services Siemsa, S.A. Lifting platform protective device for wind turbine maintenance
WO2020058099A1 (en) 2018-09-17 2020-03-26 Pp Energy Aps Water intrusion prevention system for turbine blades
EP3995693A1 (en) * 2020-11-10 2022-05-11 PP Energy ApS Temporary enclosure for at least a part of a rotor blade

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US5211125A (en) * 1991-10-24 1993-05-18 Metro Machine Corporation Apparatus and method for performing external surface work on ships' hulls
US5291695A (en) * 1992-11-04 1994-03-08 Blastco Corporation Scaffolding with enclosed movable work areas sealed against work surfaces
DE29603278U1 (en) * 1996-02-23 1996-04-25 Beyer, Reinhard, 23769 Bannesdorf Device for cleaning rotor blades of wind turbines
DE19726408C1 (en) * 1997-06-21 1999-03-18 Gerhard Reineke Schlosserei Un Working platform for maintenance of wind turbine rotor blades

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101920252A (en) * 2009-06-16 2010-12-22 通用电气公司 Be used for wind turbine rotor blade is cleaned method and apparatus with deicing
CN101920252B (en) * 2009-06-16 2013-07-31 通用电气公司 Method and apparatus for cleaning and de-icing wind turbine rotor blades
CN102530428A (en) * 2010-10-15 2012-07-04 Bnsf铁路公司 Method and apparatus for transporting wind turbine blades
CN102530428B (en) * 2010-10-15 2015-09-02 Bnsf铁路公司 For the method and apparatus of transporting wind turbine blades
CN102536671A (en) * 2010-12-20 2012-07-04 西门子公司 Wind turbine, method of control of a wind turbine and air-conditioning system
CN102536671B (en) * 2010-12-20 2016-01-20 西门子公司 Wind turbine, the method controlling wind turbine and air-conditioning system
CN103597203B (en) * 2011-06-09 2016-10-12 Pp能源有限责任公司 For connecting the lowering or hoisting gear of two rotor blade sections of wind turbine
CN103597203A (en) * 2011-06-09 2014-02-19 Pp能源有限责任公司 Lifting device for connecting two rotor blade segments of a wind turbine
US9714642B2 (en) 2011-06-09 2017-07-25 Pp Energy Aps Lifting device for connecting two rotor blade segments of a wind turbine
CN102941576A (en) * 2012-10-10 2013-02-27 河北工业大学 Pole climbing robot for wind power tower pole
CN102941576B (en) * 2012-10-10 2015-03-11 河北工业大学 Pole climbing robot for wind power tower pole
CN109416024A (en) * 2016-06-17 2019-03-01 Wp系统有限公司 Rotor blade repair apparatus
CN109416024B (en) * 2016-06-17 2020-10-02 Wp系统有限公司 Rotor blade maintenance equipment

Also Published As

Publication number Publication date
AU5974799A (en) 2000-04-10
EP1115644A1 (en) 2001-07-18
WO2000017086A1 (en) 2000-03-30
CA2341398A1 (en) 2000-03-30
BR9914015A (en) 2001-07-03

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