WO2011082710A1 - Method of lifting a wind turbine component toward a top portion of a wind turbine tower - Google Patents
Method of lifting a wind turbine component toward a top portion of a wind turbine tower Download PDFInfo
- Publication number
- WO2011082710A1 WO2011082710A1 PCT/DK2011/050002 DK2011050002W WO2011082710A1 WO 2011082710 A1 WO2011082710 A1 WO 2011082710A1 DK 2011050002 W DK2011050002 W DK 2011050002W WO 2011082710 A1 WO2011082710 A1 WO 2011082710A1
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- WIPO (PCT)
- Prior art keywords
- wind turbine
- tower
- lifting
- crane
- turbine component
- Prior art date
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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
- B66C23/20—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 with supporting couples provided by walls of buildings or like structures
Abstract
A method of lifting a wind turbine component toward a top portion of a wind turbine tower involves securing a lifting device to the top portion of the tower and positioning a crane and the wind turbine component next to the tower. A lifting cable is arranged to cradle the component between the crane and the lifting device. The crane is then operated to raise the component toward to the top of the tower.
Description
METHOD OF LIFTING A WIND TURBINE COMPONENT TOWARD A TOP PORTION OF A WIND TURBINE TOWER
Cross-Reference
[0001] This application claims the benefit of DK Application No. PA 2010 70007 and U.S.
Application No. 61/293,001 , both of which were filed on January 7, 2010.
Technical Field
[0002] The present invention relates generally to methods of wind turbine installation and service, and more specifically to a method of lifting wind turbine components toward a top portion of a wind turbine tower.
Background
[0003] Wind turbines have long been used to convert the kinetic energy of the wind into mechanical energy that rotates the shaft of a generator, thereby producing electricity. Over time there has been a significant increase in the overall size and weight of these machines and their components. This has made handling the components very challenging, particularly during installation and service operations.
[0004] For example, some modern-day wind turbines include towers more than 100 meters tall when installed. A hub, blades, nacelle, and various components to be housed within the nacelle (e.g., a gearbox and generator) must all be raised to this level. One conventional approach for lifting such components includes using a mobile crane, such as a truck-mounted or independently-movable, lattice- boom crane. Mobile cranes are commonly used because of their versatility and ability to be assembled at wind turbine sites, which are often located in remote areas, and moved around at the sites once assembled. But the lifting height and capacity of mobile cranes is limited. Existing tower heights are already a challenge for mobile crane technology. When taking the massive weight of modern wind turbine components into consideration, the limit of mobile crane technology is pressed even further.
[0005] This leaves wind turbine manufacturers and/or owners with few options for installing large wind turbines, or even for performing service operations requiring the removal or exchange of components like a gearbox or generator. There may only be a limited number of mobile cranes offered by manufacturers with the required lifting height and capacity. Therefore, the availability of the cranes
becomes a concern. Moreover, the cranes are relatively expensive because they press the limits of mobile crane technology. A large number of resources are also required to transport all the required crane components to a site when, for example, assembling a large, lattice-boom crane capable of lifting items more than 100 meters.
[0006] Some manufacturers have attempted to address these challenges by installing a crane device at the top of wind turbine towers for lifting components. However, the lifting capacity of such cranes is presently limited to 30-40 tons or less. As such, the cranes may not have the ability to lift large gearboxes, entire nacelles, or other heavy components. Increasing the lifting capacity of the cranes is a challenging task because the tower must be designed to bear the additional loads.
[0007] As can be appreciated, new devices and methods for raising components to the top of a wind turbine tower are highly desirable.
Summary
[0008] A method of lifting a wind turbine component toward a top portion of a wind turbine tower is disclosed. The method generally comprises positioning a crane next to the tower and securing a lifting device, such as a frame and tower boom, to a top portion of the tower. A lifting cable of the crane is secured to the lifting device and arranged to cradle a wind turbine component positioned next to a bottom portion of the tower. In particular, the lifting cable is arranged to extend from the crane to the wind turbine component and from the wind turbine component to the lifting device. The crane is operated while the wind turbine component is cradled by the lifting cable such that the wind turbine component is lifted toward the top portion of the wind turbine tower.
[0009] Such a method helps distribute the loads associated with the lifting operation between the tower and the crane. Thus, heavy wind turbine components may be lifted with cranes that might not have the lifting capacity to do so themselves. Cranes with lower lifting capacities are typically less expensive and more readily-available than the cranes required to lift heavy wind turbine components using conventional techniques.
[0010] The wind turbine component may be a blade, hub, or nacelle component, such as a gearbox, main shaft, or generator. Indeed, the wind turbine component may even be an assembled nacelle itself. As such, a method of assembling a wind turbine at a site is also disclosed. The method involves transporting nacelle components to the site, erecting a tower at the site, and assembling a nacelle from
the nacelle components at the site. Consistent with modern, megawatt-rated wind turbines, the nacelle weighs more than 40 tons when assembled. Thus, as used herein, "assembling the nacelle" refers to mounting within the nacelle enough of its major internal components (e.g., gearbox, shafts, and/or generator) to weigh more than 40 tons. The assembled nacelle may then be lifted toward a top portion of the tower by performing steps similar to those already mentioned.
[001 1] By assembling the nacelle at the site prior to lifting it, the number of heavy components that must be raised to the top of the wind turbine tower is reduced. Additionally, the nacelle is easier to access at a lower height such that the assembly operation itself is facilitated.
Brief Description of the Drawings
[0012] Figs. 1-9 are schematic views sequentially illustrating a method of lifting a wind turbine component to a top portion of a wind turbine tower.
Detailed Description
[0013] Fig. 1 shows one embodiment of a wind turbine tower 2 after it has been erected. The tower generally comprises a foundation 2 and several tower sections 6 stacked on top of each other, as is conventional. Although four tower sections are shown, any number of sections may be used depending on the height and design of the particular tower. Indeed, the description below focuses on a method of lifting a wind turbine component toward a top portion 8 of the tower 2 rather than the design of the tower 2 itself.
[0014] To this end, the method involves positioning a crane 10 next to the tower. The crane 10 includes a lifting boom assembly 12 having a main boom 14 supported on a vehicle 16, a jib boom 18 extending from the main boom 14, and a main sheave 20 located at an end of the jib boom 18. In a manner not shown herein, a winch is supported on the vehicle 16 as well. A lifting cable 22 extends from the winch to the end of the jib boom 18 and around the main sheave 20. The crane 10 may also include one or more jib struts 24 and pendant cables 26.
[0015] As can be appreciated, the crane 10 in Fig. 1 is a vehicle-mounted, lattice-boom crane. The crane 10 is only shown schematically and described briefly above because it is exemplary in nature; any type of crane commonly used in the wind turbine industry may be used as part of the method. For
example, a lattice-boom crawler crane, a mobile hydraulic crane, or a conventional tower crane may be used in other embodiments.
[0016] After the tower 2 is erected, a lifting device 30 is secured to the top portion 8 of the tower 2. This may be achieved by attaching the lifting cable 22 to a frame 32 of the lifting device 30 and then operating the crane 10 to raise the lifting device 30. A tower boom 34 pivo tally attached to the frame 32 may hang below the frame 32 during this lifting operation. As shown in Figs. 2 and 3, the frame 32 is eventually secured to the top portion 8, and the tower boom 34 is pivoted into a desired position. At this point the tower boom 34 is secured relative to the frame 32 so that the lifting device 30 is ready for use.
[0017] With reference to Figs. 4 and 5, the lifting cable 22 of the crane 10 is secured to the lifting device 30 and arranged to "cradle" a wind turbine component 40 positioned next to a bottom portion 42 of the tower 2. In other words, the lifting cable 22 extends from the main sheave 20 of the crane 10 to the wind turbine component 40 and from the wind turbine component 40 to the lifting device 30. The order in which these steps are performed may occur in any manner. For example, the lifting cable 22 may first be secured to the lifting device 30, as shown in Fig. 3, and subsequently paid out (i.e., reeled out) by the winch of the crane 10 so that a portion between the lifting device 30 and main sheave 22 is lowered toward the ground. That portion of the lifting cable 22 may then be coupled to the wind turbine component 40. Alternatively, the lifting cable 22 may first be paid out by the winch, coupled to the wind turbine component 40, and then raised toward and secured to the lifting device 30.
[0018] The wind turbine component 40 shown in the figures an assembled nacelle, but lifting other components— particularly heavy components like the blades, hub, gearbox, or generator of a wind turbine— is also possible. Additionally, persons skilled in the technical field of handling wind turbine components will appreciate different ways of securing or coupling the lifting cable 22 to the wind turbine component 40. In the embodiment shown, a lifting block 46 is secured to the wind turbine component 40. The lifting block 46 includes a lifting sheave 48 that guides the lifting cable 22. Thus, the lifting cable 22 wraps at least partially around the lifting sheave 48 when cradling the wind turbine component 40. In alternative embodiments, the lifting cable 22 may be routed through, hooked onto, or captured by a portion of the wind turbine component 40 itself or some other device secured to the wind turbine component 40.
[0019] Now referring to Figs. 5 and 6, the method further involves operating the winch of the crane 10 while the wind turbine component 40 is cradled by the lifting cable 22. As a result, the wind turbine component 40 is lifted toward the top portion 8 of the tower 2. Several features may be provided on the lifting device 30 to facilitate this lifting operation. For example, the frame 32 may include a guiding sheave 52 to help position the lifting cable 22 between the tower boom 34 and the wind turbine component 40. Arranging the lifting cable 22 to extend over the guiding sheave 52 helps prevent contact with the tower 2 by both the lifting cable 22 and the wind turbine component 40.
[0020] The frame 32 may also include one or more rolling elements 54 facing away from the tower 2 when the frame 32 is installed. The rolling elements 54 help ensure that friction between the wind turbine component 40 and frame 32, if the two come into contact, does not significantly hinder the lifting operation. Instead, the rolling elements 54 spin to allow relative movement between the wind turbine component 40 and frame 32 if there is contact. Thus, the rolling elements 54 are configured to facilitate moving the wind turbine component 40 past the frame 32.
[0021] Finally, the wind turbine component 40 is secured to the top portion 8 of the tower 2. The manner in which this occurs may depend on the component being lifting. As will be described in greater detail below, the wind turbine component 40 may be a nacelle with most or all of its major internal components, like a gearbox and generator, already installed. In such situations the nacelle may be secured directly to the top portion 8 of the tower 2 (typically by means of a yaw system). In other situations, a nacelle housing may have already been lifted and secured to the tower 2 using the above method or conventional techniques, and the wind turbine component 40 is a gearbox, generator, or some other component to be mounted within the nacelle housing. Therefore, the wind turbine component 40 may be secured to the top portion 8 of the tower 2 indirectly by being properly mounted within the nacelle housing.
[0022] Regardless of how the wind turbine component 40 is secured, the lifting cable 22 is eventually released or uncoupled from the wind turbine component 40. For example, if the lifting block 46 was used, the lifting block 46 may be detached or unsecured from the wind turbine component 40, lowered toward the bottom portion 42 of the tower 2, and then secured to another wind turbine component to be lifted toward the top portion 8 of the tower 2.
[0023] There are several advantages associated with lifting wind turbine components according to the method described above. Due to the way the lifting cable 22 cradles the wind turbine component 40,
the loads associated with the lifting operation are shared substantially equally between the tower 2 and the crane 10 rather than either bearing all loads itself. Thus, one advantage is that the necessary lifting capacity of the crane 10 is effectively reduced by half. Indeed, according to one aspect of the disclosure, it is even possible to use a crane 10 having a stand-alone lifting capacity that is less than the weight of the wind turbine component 40 being lifted.
[0024] Cranes with lower lifting capacities are typically less expensive and more readily-available than the cranes required to lift heavy wind turbine components using conventional techniques. As discussed in the background section, the weight of wind turbine components and size of wind turbine towers already presses the limits of modern-day mobile crane technology when using conventional lifting techniques. By using the method described above, however, the tower 2 may have a height of at least 100 meters and the wind turbine component 40 may way more than 40 tons without having these same concerns.
[0025] The load sharing between the crane 10 and tower 2 in the method provides other advantages as well. For example, when compared to lifting operations solely by a crane mounted to a tower, the method described above enables heavier components to be lifted without requiring significant modifications to or re-design of the tower to withstand loads. If desired, however, it may still be possible to use a tower-mounted crane for other lifting operations. In fact, the lifting device 30 and tower-mounted crane may even use the same interface on the top portion 8 of the tower 2.
[0026] One example of an interface for a tower-mounted crane is described in Danish Patent
Application No. PA 2009 00086 ("the DK Ό86 application"), the disclosure of which is incorporated herein by reference. The DK Ό86 application discloses an upper tower section with holes extending through the wall of the tower section at various locations. The holes serve as attachment points for gripping members of a crane or similar lifting equipment to be mounted to the tower. Accordingly, in the present method, the frame 32 of the lifting device 30 may be secured to the same holes/interface designed for the gripping members in the DK Ό86 application. The heaviest components needed to be raised to the top portion 8 of the tower 2, such as those weighing more than 40 tons and typically beyond the lifting capacity of tower-mounted cranes, may be lifted using the method described above. The lifting device 30 may then be removed from the tower 2 so that a tower-mounted crane may be secured to the holes/interface, as described in the DK Ό86 application. After positioning a different wind turbine component next to the bottom portion of the tower 2, the tower-mounted crane may then
be used without the assistance of auxiliary cranes (e.g., crane 10) to lift that component toward the top portion 8 of the tower 2.
[0027] By the lifting device 30 using the same interface as a tower-mounted crane, the functionality of the tower 2 is increased without additional modification. Moreover, the number of lifting operations where a mobile crane or some other auxiliary crane is needed can be reduced or minimized. Again, once the heaviest components are lifting according to the method described above, the remaining lifting operations may be performed using the tower-mounted crane. This may allow wind turbine manufacturers and/or owners to allocate resources (e.g., use of crane 10) accordingly and complete installation and service operations in a more efficient manner.
[0028] As mentioned above, the wind turbine component 40 may be— among other things— a blade, hub, gearbox, generator, or even an assembled nacelle itself. Indeed, the ability to lift an assembled nacelle offers particular advantages because of its size and the number of components it houses. For example, the nacelles of many modern-day wind turbines typically exceed the maximum allowable dimensions for transport on road and/or rail. Therefore, the housings and/or frames of these nacelles must be designed for assembly at site from smaller components that can be transported. But once the housing and frame of a nacelle are assembled, the nacelle may already exceed the lining capacity of many auxiliary cranes and tower-mounted cranes. This is particularly likely when taking into consideration the need to install internal nacelle components, especially gearboxes and generators. The result is typically multiple lifting operations and significant assembly steps taking place at the top of the tower.
[0029] Accordingly, in view of the present disclosure, a method for assembling a wind turbine might involve transporting nacelle components to a wind turbine site, erecting the tower at the site (e.g., by joining together the tower sections), and assembling a nacelle from the nacelle components at the site. The assembled nacelle may then be lifted by performing steps similar to those already mentioned. By assembling the nacelle at the site prior to lifting it, the number of heavy components that must be raised to the top of the wind turbine tower is reduced. Additionally, the nacelle is easier to access at a lower height such that the assembly operation itself is facilitated.
[0030] Again, the crane used as part of the method may have a stand-alone lifting capacity that is less than the weight of the wind turbine component— in this case the assembled nacelle. Additionally, the
method may also involve subsequent lifting operations using a tower-mounted crane secured to the same interface used to secure the lifting device. Thus, the advantages described above may still apply.
[0031] The embodiments described above are merely examples of the invention defined by the claims that appear below. Persons skilled in the technical field of handling wind turbine components will appreciate additional examples, modifications, and advantages based on the description. For example, the lifting device 30 may include additional or different-shaped booms. Furthermore, the lifting device 30 may include a lifting winch, and the lifting cable 22 may be defined by a first segment extending from the winch of the crane 10 to the wind turbine component 40 and a second segment extending from the wind turbine component 40 to the lifting winch of the lifting device 30. The first and second segments need not be continuous, as each may be secured to the wind turbine component 40. The wind turbine component 40, which is effectively cradled, may then be raised toward the top portion 8 of the tower 2 by operating the two winches. Again, these and other variants will be appreciated by those skilled in the art.
Claims
1. A method of lining a wind turbine component toward a top portion of a wind turbine tower, comprising:
positioning a crane next to the wind turbine tower;
securing a lining device to the top portion of the wind turbine tower;
securing a lifting cable of the crane to the lifting device;
positioning a wind turbine component next to a bottom portion of the wind turbine tower;
arranging the lifting cable to extend from the crane to the wind turbine component and from the wind turbine component to the lifting device, thereby cradling the wind turbine component with the lifting cable; and
operating the crane while the wind turbine component is cradled by the lifting cable such that the wind turbine component is lifted toward the top portion of the wind turbine tower.
2. A method according to claim 1 , wherein the lifting device includes a frame and a tower boom pivotally attached to the frame, and wherein securing the lifting device to the top portion of the wind turbine tower comprises:
securing the frame to the wind turbine tower;
pivoting the tower boom relative to the frame; and
securing the tower boom in position relative to the frame.
3. A method according to claim 2, wherein the frame of the lifting device includes a guiding sheave, and wherein arranging the lifting cable further comprises:
arranging the lifting cable to extend over the guiding sheave between the tower boom and wind turbine component.
4. A method according to claim 2 or 3, wherein the frame of the lifting device includes one or more rolling elements, and wherein operating the crane further comprises:
lifting wind turbine component above the frame, the rolling elements being configured to facilitate moving the wind turbine component past the frame.
5. A method according to any of the preceding claims, further comprising:
securing a lifting block to the wind turbine component, wherein the lifting block includes a lifting sheave, and further wherein the lifting cable wraps at least partially around the lifting sheave when the wind turbine component is cradled by the main lifting cable.
6. A method according to any of the preceding claims, wherein the lifting cable is secured to the lifting device before arranging the lifting cable to cradle the wind turbine component.
7. A method according to any of the preceding claims, further comprising:
erecting the wind turbine tower, wherein the wind turbine tower has a height of at least 100 meters and the wind turbine component weighs more than 40 tons.
8. A method according to any of the preceding claims, wherein the crane has a stand-alone lifting capacity that is less than the weight of the wind turbine component.
9. A method according to any of the preceding claims, wherein the wind turbine component is a nacelle, a blade, a hub, a gearbox, or a generator.
10. A method according to any of the preceding claims, wherein the top portion of the wind turbine tower includes an interface for a tower-mounted crane, the lifting device being secured to the interface, and the method further comprising:
securing the wind turbine component to the top portion of the wind turbine tower;
removing the lifting device from the wind turbine tower;
securing the tower-mounted crane to the interface on the top portion of the tower;
positioning a different wind turbine component next to the bottom portion of the tower; and using the tower-mounted crane to lift to the different wind turbine component toward the top portion of the tower without the assistance of an auxiliary crane.
11. A method according to any of the preceding claims, wherein the crane includes a winch and a lifting boom assembly with a main sheave, and further wherein the lifting cable is arranged to extend from the winch, around the main sheave, and to the wind turbine component.
12. A method of assembling a wind turbine at a site, comprising:
transporting nacelle components to the site;
erecting a wind turbine tower at the site;
securing a lifting device to the top portion of the wind turbine tower;
positioning a crane next to the wind turbine tower;
securing a lifting cable of the crane to the lifting device;
assembling a nacelle from the nacelle components at the site, the nacelle weighing more than approximately 40 tons when assembled;
arranging the lifting cable to extend from the crane to the nacelle and from the nacelle to the lifting device, thereby cradling the nacelle with the lifting cable; and
operating the crane while the nacelle is cradled by the lifting cable such that the wind turbine component is lifted toward the top portion of the wind turbine tower.
13. A method according to claim 12, wherein the crane has a stand-alone lifting capacity that is less than the weight of the wind turbine component.
14. A method according to claim 12 or 13, wherein the top portion of the wind turbine tower includes an interface for a tower-mounted crane, the lifting device being secured to the interface, and the method further comprising:
securing the wind turbine component to the top portion of the wind turbine tower;
removing the lifting device from the wind turbine tower;
securing the tower-mounted crane to the interface on the top portion of the tower;
positioning a wind turbine component next to the bottom portion of the tower; and
using the tower crane-mounted to lift to the wind turbine component toward the top portion of the tower without the assistance of an auxiliary crane.
15. A method according to any of claims 12-14, further comprising:
transporting tower sections to the site, wherein the wind turbine tower is erected by joining the tower sections together.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US29300110P | 2010-01-07 | 2010-01-07 | |
| DKPA201070007 | 2010-01-07 | ||
| DKPA201070007 | 2010-01-07 | ||
| US61/293,001 | 2010-01-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2011082710A1 true WO2011082710A1 (en) | 2011-07-14 |
Family
ID=44305206
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/DK2011/050002 WO2011082710A1 (en) | 2010-01-07 | 2011-01-04 | Method of lifting a wind turbine component toward a top portion of a wind turbine tower |
Country Status (1)
| Country | Link |
|---|---|
| WO (1) | WO2011082710A1 (en) |
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| DE202011001850U1 (en) * | 2011-01-24 | 2012-04-30 | Liebherr-Werk Ehingen Gmbh | crane |
| WO2013171359A1 (en) * | 2012-05-18 | 2013-11-21 | Structural Research,S.L. | Self-climbing telescopic crane and method for mounting pre-fabricated concrete towers |
| WO2018113866A1 (en) * | 2016-12-23 | 2018-06-28 | Vestas Wind Systems A/S | A method and an assembly for handing wind turbine blades |
| WO2018185111A1 (en) * | 2017-04-03 | 2018-10-11 | Lagerwey Wind B.V. | Hoisting system for installing a wind turbine |
| CN109231026A (en) * | 2018-10-19 | 2019-01-18 | 上海峙狄机械设备有限公司 | Hanging apparatus for offshore wind farm unit key components and parts |
| CN110905273A (en) * | 2019-12-10 | 2020-03-24 | 河南送变电建设有限公司 | Construction device for assembling super-long cross arm |
| US10801473B2 (en) | 2017-03-29 | 2020-10-13 | General Electric Company | Hub crane assembly for a wind turbine |
| CN112249874A (en) * | 2020-11-12 | 2021-01-22 | 许昌许继风电科技有限公司 | Split type hoisting method for onshore wind generating set |
| WO2022023279A1 (en) * | 2020-07-27 | 2022-02-03 | Deme Offshore Be N.V. | Device and method for placing a component of a wind turbine |
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| DE202011001850U1 (en) * | 2011-01-24 | 2012-04-30 | Liebherr-Werk Ehingen Gmbh | crane |
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| KR20200002831A (en) * | 2017-04-03 | 2020-01-08 | 라거웨이 윈드 비브이 | Hoisting system for installing wind turbines |
| CN110740963A (en) * | 2017-04-03 | 2020-01-31 | 劳格文温德有限公司 | Lifting system for mounting a wind turbine |
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| WO2018185111A1 (en) * | 2017-04-03 | 2018-10-11 | Lagerwey Wind B.V. | Hoisting system for installing a wind turbine |
| RU2744782C1 (en) * | 2017-04-03 | 2021-03-15 | Лагервей Винд Б.В. | Lifting system for installing a wind turbine and method for lifting operations (options) |
| US11174136B2 (en) | 2017-04-03 | 2021-11-16 | Lagerwey Wind B.V. | Hoisting system for installing a wind turbine |
| KR102377349B1 (en) * | 2017-04-03 | 2022-03-21 | 라거웨이 윈드 비브이 | Hoisting system for installing wind turbines |
| CN109231026A (en) * | 2018-10-19 | 2019-01-18 | 上海峙狄机械设备有限公司 | Hanging apparatus for offshore wind farm unit key components and parts |
| CN109231026B (en) * | 2018-10-19 | 2023-09-29 | 上海峙狄机械设备有限公司 | Hoisting device for key parts of offshore wind turbine generator |
| CN110905273A (en) * | 2019-12-10 | 2020-03-24 | 河南送变电建设有限公司 | Construction device for assembling super-long cross arm |
| BE1028520B1 (en) * | 2020-07-27 | 2022-02-22 | Deme Offshore Be Nv | Device and method for placing a part of a wind turbine |
| WO2022023279A1 (en) * | 2020-07-27 | 2022-02-03 | Deme Offshore Be N.V. | Device and method for placing a component of a wind turbine |
| CN112249874A (en) * | 2020-11-12 | 2021-01-22 | 许昌许继风电科技有限公司 | Split type hoisting method for onshore wind generating set |
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