EP2925659A1 - Crane comprising a lifting frame for lifting and mounting wind turbine blades - Google Patents

Crane comprising a lifting frame for lifting and mounting wind turbine blades

Info

Publication number
EP2925659A1
EP2925659A1 EP13859127.6A EP13859127A EP2925659A1 EP 2925659 A1 EP2925659 A1 EP 2925659A1 EP 13859127 A EP13859127 A EP 13859127A EP 2925659 A1 EP2925659 A1 EP 2925659A1
Authority
EP
European Patent Office
Prior art keywords
crane
lifting frame
lifting
wire
frame
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP13859127.6A
Other languages
German (de)
French (fr)
Other versions
EP2925659A4 (en
Inventor
Per Fenger
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.)
Liftra IP ApS
Original Assignee
Liftra IP ApS
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 Liftra IP ApS filed Critical Liftra IP ApS
Publication of EP2925659A1 publication Critical patent/EP2925659A1/en
Publication of EP2925659A4 publication Critical patent/EP2925659A4/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/18—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes
    • B66C23/185—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes for use erecting wind turbines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
    • B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
    • B66C1/108—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means for lifting parts of wind turbines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C13/00—Other constructional features or details
    • B66C13/04—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack
    • B66C13/08—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack for depositing loads in desired attitudes or positions
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/72—Wind turbines with rotation axis in wind direction

Definitions

  • the present invention relates to a lifting frame for lifting and installing the blades of wind turbines of the type comprising a frame having a first and a second end adapted to be connected to a wind turbine blade, as well as a winch of a crane with crane jib for carrying the weight of the blade, wherein the frame is adapted to lift maintain a therein arranged wind turbine blade in a substantially horizontal plane, alternatively, the lifting frame being adapted to lift and maintain in this positioned wind turbine blade in approximately any conceivable orientation different from the one in the substantially horizontal plane and position, hanging in the crane main wire, and wherein the crane comprises at least two secondary independent winch systems with secondary wires, and wherein the crane jib comprises a number of cooperating secondary pulleys, located at the towards the main wire adjacent side of the crane jib, alternatively at crane jib sides.
  • DK/EP 2084098 T3 discloses a method and a lifting system for wind turbine blades comprising a lifting device with a frame designed to be connected with a wind turbine blade and a crane jib with a winch, and at least one guide wire pro- gressing between wire wheels located on the crane jib and a winch arrangement on the frame, for guiding the orientation of the blade to be in a substantially horizontal plane when the blade is raised from the ground, and where the winch is located in the lifting device.
  • the known lifting system for wind turbines comprises that the guide cable/guide wires is connected with winches located on the lifting device, resulting in an increase of weight of the lifting device, and further a control problem, as it will be necessary to be able to remote control the winches, since the wind turbine lifting system is not provided staffed.
  • a further an more pronounced problem is, that the guide cable only in a certain extent secures the directional stability during lifting and handling of a wind turbine blade in a substantially horizontal plane, since only the weight of the frame in combination with the weight of the wind turbine blade contributes to secure the wind turbine blade in the frame against wind action during installation of the blade on the turbine hub.
  • Some kind of control is sought established by providing the winch on the frame of the lifting device with a slack block which establishes a counter hold relative to the winches displacement of the control cable.
  • the lifting frame is designed for lifting and remain a in this arranged wind turbine blade in a substantially horizontal plane, or approximately in any orientation different from the substantially horizontal plane and position, suspended in the main wire of the crane.
  • the crane comprises at least two secondary winch systems with secondary wires, where the crane jib comprises a number of
  • This specified control device solves only to some extent the need for a stable control during installing of wind turbine blades, and is suitable for relatively low o wind conditions.
  • a lifting frame for lifting and installing blades on wind turbines of the kind that comprises a frame with a first end and a second end designed to be connected with a wind turbine blade, and a winch on a crane with a crane jib for carrying the weight of the blade, where the frame is designed for lifting and retain a therein arranged wind turbine blade in a substantially horizontal plane, alternatively, that the lifting frame is designed for lifting and retaining a therein arranged wind turbine blade in any conceivable orientation different from the substantially horizontal plane and position, suspended in the main wire of the crane, and where the crane comprises at least two secondary winch systems with secondary wires, and where the crane jib comprises a number of therewith cooperating second wire wheels, located on the against the main wire adjacent side of the crane jib, alternatively on the sides of the crane jib, characterized in, that the lifting frame on the against the crane jib adjacent side and close to respectively the first and the second end of the frame comprises at least
  • the wires of which is lead via wire wheels on the frame and further connecting these to the first and the second wire wheel on the frame, respectively, and further anchoring them at the foot of the crane jib, in combination with the main lifting wire of the crane, which is carrying as well the frame as the therein arranged wind turbine blade, there is achieved a double triangular control of the frame and accordingly the orientation of the wind turbine blade which leads to an increased stability compared to the prior art, as the secondary control wires of the crane in combination with the main lifting wire is in position to establish en increased force oriented horizontally against the crane jib in two attack points defined by the first and the second wire wheel on this, pulling respectively in the control wires and in the main lifting wire of the crane, whereby the horizontal force originated from the gravity of the frame and blade is increased by the downwards oriented pull, which can be generated by the triangular routing of the control wires.
  • the therewith increased horizontally oriented force application of the frame leads to a substantially increased stability of the wind turbine blade, and thus a higher degree of safety during handling and in- stalling wind turbine blades arranged in the lifting frame according to the invention. Since the prior art control devices does not offer the possibility of providing a double triangular control with the possibility of generating a downwards oriented influenced force on the lifting frame, the use of the lifting frame according to the invention will result in a significant increased stability of the wind turbine blade during installation, in larger wind appliance, where the prior art control devices are not sufficient.
  • these may comprise securing arrangements for retaining the secondary wires belonging to the second winch systems of the crane.
  • the first and the second wire wheel on the lifting frame may be releasable attached to the lifting frame.
  • Fig. 1 is a perspective view of a crane comprising a main lifting wire and sec- ondary guide wire systems, connected with a lifting frame for a wind turbine blade, according to the invention, wherein the lifting frame is under hoisting, and
  • Fig. 2 is a perspective view of Fig. 1 , but where the lifting frame is hoisted to the installing position for a wind turbine blade.
  • Fig. 1 discloses a crane 2 comprising a crane jib with a main lifting wire 6 connected with the main winch of the crane, the lifting wire being lead around a block 8 in the upper end 10 of the crane.
  • a highly simplified sketch of a lifting frame 1 1 for handling and lifting a not shown wind turbine blade is disclosed.
  • the crane 2 comprises beyond the main lifting wire 6 a first secondary winch system and a second secondary winch system with respectively a first winch 9 with a first secondary wire 12 and a second secondary 13 with a second secondary wire 14, and where the crane jib 4 comprises a therewith cooperating first sec- ondary wire wheel 16 and a second secondary wire wheel 18, located on the against the main wire 6 adjacent side of the crane jib.
  • the lifting frame 11 may be of the kind which solely is eyed for installation of wind turbine blades oriented in a substantially horizontal plane, however it might also be of the type which allows installation of wind turbine blades in approximately any conceivable orientation different from a substantially horizontal orientated plane.
  • the first secondary wire 12 comprised of the first secondary winch system 8 is lead from the winch 9, via the first secondary wire wheel 16 on the crane jib 4 and around the first wire wheel 26 on the lifting frame 1 1 and further from this to a first anchoring point 30 on the crane 2, near the foot 32 of the crane jib.
  • the second secondary wire 14 comprised of the second secondary winch system 10 is lead from the winch 13, via the second secondary wire wheel 18 on the crane jib 4 and around the second wire wheel 28 on the lifting frame 1 1 and further from this to a second anchoring point 34 on the crane, near the foot 32 of the crane jib.
  • the first triangular wire system A defined by the secondary wires 12, 14, lead between the winches 9, 13 via the secondary wire wheels 16, 18 on the crane jib 4 and the first and the second wire wheel 26, 28 on the lifting frame 11 , and back to the anchoring points 30, 34 at the foot 32 on the crane jib.
  • the second wire system B is defined by the main lifting wire 6 and the part of the secondary wires 12, 14 which runs between the secondary wire wheels 16, 18 on the crane jib 4 and the first and second wire wheel 26, 28 on the lifting frame 1 1 , and the part 36 of the crane jib 4, which is located between the secondary wire wheels 16, 18 on the crane jib and the block 8 for the main lifting wire 6 of the crane.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wind Motors (AREA)

Abstract

There is disclosed a lifting frame (11 ) for use lifting and installing blades on wind turbines of the kind comprising a frame (11) with a first end (22) and a second end (24) designed to be connected with a wind turbine blade, and a winch on a crane (2) with a crane jib (4) for carrying the weight of the blade and the lifting frame, where the frame (11) is adapted to lift and retain a therein arranged wind turbine blade in a substantially horizontal plane, alternatively that the lifting frame (11) is adapted to lift and retain a therein arranged wind turbine blade in an approximately any conceivable orientation different from a substantially horizontal plane and position hanging in the main lifting wire (6), and where the crane (2) comprises at least two secondary winch systems with secondary wires (12, 14), and where the crane jib comprises a number of therewith cooperating secondary wire wheels (16, 18), located on the against the main wire adjacent side (18) of the crane jib (4) alternatively on the sides of the crane jib, characterized in, that the lifting frame (11), on the against the crane jib adjacent side (20) and near respectively the first end (22) and the second end (24) of the frame (11), comprises at least a first wire wheel (26) and a second wire wheel (28) for connection with the wires (12, 14) of the secondary winch systems, where the wires of the secondary winch systems runs in a triangle (A) between the secondary wire wheels (16, 18) of the crane, via the first and second wire wheel (26, 28) on the lifting frame (11) and further to independent anchoring points (30, 34) at the foot (32) of the crane jib (4). Herewith is achieved a horizontal oriented force application on the lifting frame (11) exerting a pull in the secondary wires (12, 14), resulting in a substantial increase of the stability of the lifting frame.

Description

CRANE COMPRISING A LIFTING FRAME FOR LIFTING AND MOUNTING WIND
TURBINE BLADES
The present invention relates to a lifting frame for lifting and installing the blades of wind turbines of the type comprising a frame having a first and a second end adapted to be connected to a wind turbine blade, as well as a winch of a crane with crane jib for carrying the weight of the blade, wherein the frame is adapted to lift maintain a therein arranged wind turbine blade in a substantially horizontal plane, alternatively, the lifting frame being adapted to lift and maintain in this positioned wind turbine blade in approximately any conceivable orientation different from the one in the substantially horizontal plane and position, hanging in the crane main wire, and wherein the crane comprises at least two secondary independent winch systems with secondary wires, and wherein the crane jib comprises a number of cooperating secondary pulleys, located at the towards the main wire adjacent side of the crane jib, alternatively at crane jib sides.
DK/EP 2084098 T3 discloses a method and a lifting system for wind turbine blades comprising a lifting device with a frame designed to be connected with a wind turbine blade and a crane jib with a winch, and at least one guide wire pro- gressing between wire wheels located on the crane jib and a winch arrangement on the frame, for guiding the orientation of the blade to be in a substantially horizontal plane when the blade is raised from the ground, and where the winch is located in the lifting device. The known lifting system for wind turbines comprises that the guide cable/guide wires is connected with winches located on the lifting device, resulting in an increase of weight of the lifting device, and further a control problem, as it will be necessary to be able to remote control the winches, since the wind turbine lifting system is not provided staffed. A further an more pronounced problem is, that the guide cable only in a certain extent secures the directional stability during lifting and handling of a wind turbine blade in a substantially horizontal plane, since only the weight of the frame in combination with the weight of the wind turbine blade contributes to secure the wind turbine blade in the frame against wind action during installation of the blade on the turbine hub. Some kind of control is sought established by providing the winch on the frame of the lifting device with a slack block which establishes a counter hold relative to the winches displacement of the control cable.
5
In US 201 1094987 A1 (BOTWRIGHT et al.) is disclosed a crane provided with a control device eyed for use lifting and installing blades on wind turbines. The control device is secured to a lifting frame connected with a wind turbine blade and a winch on a crane with a jib for carrying the weight of the wind turbine blade
0 and the lifting frame. The lifting frame is designed for lifting and remain a in this arranged wind turbine blade in a substantially horizontal plane, or approximately in any orientation different from the substantially horizontal plane and position, suspended in the main wire of the crane. The crane comprises at least two secondary winch systems with secondary wires, where the crane jib comprises a number of
5 therewith cooperating secondary wire wheels located on the against the main wire adjacent side of the crane jib.
This specified control device solves only to some extent the need for a stable control during installing of wind turbine blades, and is suitable for relatively low o wind conditions.
Thus there is an urgent need to achieve a greater grade of stability during lifting of wind turbine blades so that it is possible to perform handling and installing under weather conditions with some more wind impact than the prior art permits, 5 reducing the number of days lost for a mobile crane hired for mounting of wind turbine blades.
It is the object of the invention to provide a solution to this problem, as this will increase the number of days in which it is possible to perform installation and o handling of wind turbine blades.
By the invention it is realized that this is possible using a lifting frame for lifting and installing blades on wind turbines of the kind that comprises a frame with a first end and a second end designed to be connected with a wind turbine blade, and a winch on a crane with a crane jib for carrying the weight of the blade, where the frame is designed for lifting and retain a therein arranged wind turbine blade in a substantially horizontal plane, alternatively, that the lifting frame is designed for lifting and retaining a therein arranged wind turbine blade in any conceivable orientation different from the substantially horizontal plane and position, suspended in the main wire of the crane, and where the crane comprises at least two secondary winch systems with secondary wires, and where the crane jib comprises a number of therewith cooperating second wire wheels, located on the against the main wire adjacent side of the crane jib, alternatively on the sides of the crane jib, characterized in, that the lifting frame on the against the crane jib adjacent side and close to respectively the first and the second end of the frame comprises at least a first and a second wire wheel for connection of the wires of the secondary independent winch systems, where the wires between the independent secondary winch sys- terns runs in a triangle between the secondary wire wheels of the crane, via respectively the first and second wire wheel on the lifting frame and on to independent attachment points at the foot of the crane jib.
Thus using the secondary winch systems of the crane, the wires of which is lead via wire wheels on the frame and further connecting these to the first and the second wire wheel on the frame, respectively, and further anchoring them at the foot of the crane jib, in combination with the main lifting wire of the crane, which is carrying as well the frame as the therein arranged wind turbine blade, there is achieved a double triangular control of the frame and accordingly the orientation of the wind turbine blade which leads to an increased stability compared to the prior art, as the secondary control wires of the crane in combination with the main lifting wire is in position to establish en increased force oriented horizontally against the crane jib in two attack points defined by the first and the second wire wheel on this, pulling respectively in the control wires and in the main lifting wire of the crane, whereby the horizontal force originated from the gravity of the frame and blade is increased by the downwards oriented pull, which can be generated by the triangular routing of the control wires. The therewith increased horizontally oriented force application of the frame leads to a substantially increased stability of the wind turbine blade, and thus a higher degree of safety during handling and in- stalling wind turbine blades arranged in the lifting frame according to the invention. Since the prior art control devices does not offer the possibility of providing a double triangular control with the possibility of generating a downwards oriented influenced force on the lifting frame, the use of the lifting frame according to the invention will result in a significant increased stability of the wind turbine blade during installation, in larger wind appliance, where the prior art control devices are not sufficient.
In the intent to ensure that the control wires remain journalled on the first and the second wire wheel these may comprise securing arrangements for retaining the secondary wires belonging to the second winch systems of the crane.
Hereby is achieved a safeguard against the wires in the event ofan unexpected gust of wind, does not disengage from the first, and/or the second wire wheel on the lifting frame during handling and lifting, or installation of a wind tur- bine blade arranged in the lifting frame.
For reasons of flexibility it is preferred in an embodiment of the lifting frame according to the invention, the first and the second wire wheel on the lifting frame may be releasable attached to the lifting frame.
The invention is explained in more detail in the following with reference to the accompanying drawings, wherein;
Fig. 1 is a perspective view of a crane comprising a main lifting wire and sec- ondary guide wire systems, connected with a lifting frame for a wind turbine blade, according to the invention, wherein the lifting frame is under hoisting, and
Fig. 2 is a perspective view of Fig. 1 , but where the lifting frame is hoisted to the installing position for a wind turbine blade. Fig. 1 discloses a crane 2 comprising a crane jib with a main lifting wire 6 connected with the main winch of the crane, the lifting wire being lead around a block 8 in the upper end 10 of the crane. At the end of the main lifting wire 6 is disclosed a highly simplified sketch of a lifting frame 1 1for handling and lifting a not shown wind turbine blade. The crane 2 comprises beyond the main lifting wire 6 a first secondary winch system and a second secondary winch system with respectively a first winch 9 with a first secondary wire 12 and a second secondary 13 with a second secondary wire 14, and where the crane jib 4 comprises a therewith cooperating first sec- ondary wire wheel 16 and a second secondary wire wheel 18, located on the against the main wire 6 adjacent side of the crane jib.
The lifting frame 11 may be of the kind which solely is eyed for installation of wind turbine blades oriented in a substantially horizontal plane, however it might also be of the type which allows installation of wind turbine blades in approximately any conceivable orientation different from a substantially horizontal orientated plane.
As it appears from Fig. 1 and Fig. 2, the against the crane jib adjacent side 20 of the lifting frame 1 1 , and nearest to the first end 22 and the second end 24, a first wire wheel 26 and a second wire wheel 28.
The first secondary wire 12 comprised of the first secondary winch system 8 is lead from the winch 9, via the first secondary wire wheel 16 on the crane jib 4 and around the first wire wheel 26 on the lifting frame 1 1 and further from this to a first anchoring point 30 on the crane 2, near the foot 32 of the crane jib.
The second secondary wire 14 comprised of the second secondary winch system 10 is lead from the winch 13, via the second secondary wire wheel 18 on the crane jib 4 and around the second wire wheel 28 on the lifting frame 1 1 and further from this to a second anchoring point 34 on the crane, near the foot 32 of the crane jib.
Thus, as it appears from Fig. 1 and Fig. 2, there is established a double tri- angular wire system for control of the lifting frame 1 1. The first triangular wire system A, defined by the secondary wires 12, 14, lead between the winches 9, 13 via the secondary wire wheels 16, 18 on the crane jib 4 and the first and the second wire wheel 26, 28 on the lifting frame 11 , and back to the anchoring points 30, 34 at the foot 32 on the crane jib.
The second wire system B is defined by the main lifting wire 6 and the part of the secondary wires 12, 14 which runs between the secondary wire wheels 16, 18 on the crane jib 4 and the first and second wire wheel 26, 28 on the lifting frame 1 1 , and the part 36 of the crane jib 4, which is located between the secondary wire wheels 16, 18 on the crane jib and the block 8 for the main lifting wire 6 of the crane.
In Fig. 2, where the lifting frame is assumed to be lifted to the installation position for a not shown wind turbine blade rested in the lifting frame 1 1 , it will be possible to control and stabilize the lifting frame 1 1 carrying a turbine blade, by pulling the secondary wires 12, 14 by activating the secondary winches 9, 13, without slacking the main lifting wire 6 of the crane, which will result in a horizontal orientated force application on the lifting frame 1 1 in direction towards the crane jib 4 as the length of wire between the first and the second wire wheel 26, 28 on the lifting frame 1 1 will be reduced. It will further be possible to perform some control of the orientation of the lifting frame exerting a differentiated pull in the secondary wires 12, 14.

Claims

Claims
1 Lifting frame (11) for use lifting and installing blades on wind turbines of the kind comprising a frame (11) with a first end (22) and a second end (24) designed 5 to be connected with a wind turbine blade, and a winch on a crane (2) with a crane jib (4) for carrying the weight of the blade and the lifting frame, where the frame (11) is adapted to lift and retain a therein arranged wind turbine blade in a substantially horizontal plane, alternatively that the lifting frame (11) is adapted to lift and retain a therein arranged wind turbine blade in an approximately any conceiv-o able orientation different from a substantially horizontal plane and position hanging in the main lifting wire (6), and where the crane (2) comprises at least two secondary winch systems with secondary, wires (12, 14), and where the crane jib comprises a number of therewith cooperating secondary wire wheels (16, 18), located on the against the main wire adjacent side (18) of the crane jib (4) alternatively on5 the sides of the crane jib, c h a ra cte rized i n , that the lifting frame (11), on the against the crane jib adjacent side (20) and near respectively the first end (22) and the second end (24) of the frame (11), comprises at least a first wire wheel (26) and a second wire wheel (28) for connection with the wires (12, 14) of the secondary winch systems, where the wires of the secondary winch systems o runs in a triangle (A) between the secondary wire wheels (16, 18) of the crane, via the first and second wire wheel (26, 28) on the lifting frame (11) and further to independent anchoring points (30, 34) at the foot (32) of the crane jib (4).
2. Lifting frame (11 ) according to claim 1, ch a ra cte rized i n ,5 that the first and the second wire wheel (26, 28) on the lifting frame (11) comprises securing arrangements for retaining of the secondary wires (12, 14) of the secondary winch systems.
3. Lifting frame (11) according to claim 1, c h a racte rized i n , 0 that the first and the second wire wheel (26, 28) on the lifting frame (11) is releas- able attached to the lifting frame (11).
EP13859127.6A 2012-11-27 2013-10-11 Crane comprising a lifting frame for lifting and mounting wind turbine blades Withdrawn EP2925659A4 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DK201200751A DK177672B1 (en) 2012-11-27 2012-11-27 Lifting Frame
PCT/DK2013/050322 WO2014082641A1 (en) 2012-11-27 2013-10-11 Crane comprising a lifting frame for lifting and mounting wind turbine blades

Publications (2)

Publication Number Publication Date
EP2925659A1 true EP2925659A1 (en) 2015-10-07
EP2925659A4 EP2925659A4 (en) 2016-08-17

Family

ID=50097920

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13859127.6A Withdrawn EP2925659A4 (en) 2012-11-27 2013-10-11 Crane comprising a lifting frame for lifting and mounting wind turbine blades

Country Status (3)

Country Link
EP (1) EP2925659A4 (en)
DK (1) DK177672B1 (en)
WO (1) WO2014082641A1 (en)

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US9346656B2 (en) * 2014-07-01 2016-05-24 Marvin M. May Stabilization and control of a crane load
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CA3012945C (en) 2017-11-22 2019-05-21 LiftWerx Holdings Inc. Lift system mountable in a nacelle of a wind turbine
US10988351B2 (en) 2018-08-31 2021-04-27 LiftWerx Holdings Inc. Nacelle-mounted lift system for wind turbine
EP3902764A1 (en) * 2018-12-28 2021-11-03 Vestas Wind Systems A/S A method for handling a wind turbine component with a control arrangement
DK180448B1 (en) 2019-09-11 2021-04-28 Eltronic As A load guiding arrangement arranged for mounting to a crane
BE1028262B1 (en) * 2020-05-04 2021-12-07 Deme Offshore Be Nv Lifting system and method for lifting an elongated object
CN111894341A (en) * 2020-08-04 2020-11-06 深圳海油工程水下技术有限公司 Centering method for back-twist tower crane
CN117023413B (en) * 2023-08-09 2024-01-02 江苏隐石检验检测有限公司 Hoisting structure of pressure vessel equipment

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EP1925582B1 (en) * 2006-11-23 2010-06-23 Siemens Aktiengesellschaft Method and a device for mounting of wind turbine blades
US8070000B2 (en) * 2009-10-23 2011-12-06 Vestas Wind Systems A/S Apparatus and method for assembling wind turbines
DK177006B1 (en) * 2010-01-19 2010-11-22 Ah Ind Projects Aps Method for controlling orientation of a load suspended in a carrier wire around the wire as well as a player arrangement
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Also Published As

Publication number Publication date
EP2925659A4 (en) 2016-08-17
DK177672B1 (en) 2014-02-17
WO2014082641A1 (en) 2014-06-05

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