JP2004308521A - Method and device for constructing wind power generating device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To dispense with a large crane for setting a wind power generating device and to carry out the work quickly, safely and securely. <P>SOLUTION: A tower 4 is constructed by connecting a plurality of segmentation towers upward one by one. A mast 5 comprising a plurality of steps of mast nearly in a U shape in plan view is arranged so as to surround the tower 4 and capable of telescopically rising/descending. The lower end part of the tower 4 and the lower part of the mast 5 are supported by a jacket type foundation structure 2. While stably supported by the established part of the tower 4, the mast 5 is successively raised. A lifting mechanism 15 installed on the upper part of the mast 5 lifts the segmentation towers for completing the tower 4. A generator 6 and a rotor blade 8 are lifted and installed on the upper part of the tower 4. After that, the mast 5 is lowered/contracted to be removed/dismantled from the jacket type foundation structure 2. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a construction method and a construction device for a wind power generator.
[0002]
[Prior art]
A wind power generator (equipment) is constructed by installing a generator (nacelle) with blades at the top of the tower. When installing the power generation equipment, a heavy generator is pulled up at the top of the tower and installed. Must have a large crane. In addition, when the rotor blade is installed on the generator by the crane, if the wind is strong, the blade is easily affected by the wind, so that much time is required or the work is often stopped. In addition, a large crane not only raises construction costs but also has a problem that it is difficult to carry it to a construction site on land.
[0003]
In addition, when installing the wind generator on the sea, it is difficult to work under the sway of the waves, so a self-elevating work platform (SEP) is used to install a scaffold on the sea and place a large scaffold on it. It is conceivable to construct the tower with a crane and then lift and install the generator and rotor blades to the top of the tower.In this case, too, the installation of the rotor blades may be affected by wind if the wind is strong. In many cases, the work requires a great deal of time or is stopped because the work is easily performed. In addition, generators larger than on land are being studied on the ocean to increase power generation efficiency. For example, when the scale is several MV, the generator body and blades become larger and heavier, making installation work more difficult. Become.
[0004]
The above prior arts are summarized in the following (1) to (4). (1) A construction method using a hoist ship applied to offshore construction. (2) A construction method using SEP (self-elevating work platform ship) + CC (crawler crane) applied to offshore construction. {Circle around (3)} A construction method of Japanese Patent Laid-Open No. Hei 10-205428 (method of constructing a wind power generator) applicable to both onshore and offshore. {Circle around (4)} A construction method of Japanese Patent Application Laid-Open No. 2002-242483 (method for constructing a tower-like structure and its device) applied to both onshore and offshore.
[0005]
[Patent Document 1]
JP-A-10-205428
[Patent Document 2]
JP-A-2002-242483
[0006]
[Problems to be solved by the invention]
The construction method using a hoisting ship (crane ship) according to the conventional construction method (1) requires a large crane ship (height). As the generator becomes larger and taller, the work of installing and assembling the wind turbine top structure (nacelle, rotor blades, etc.) becomes more difficult.
[0007]
As a problem in the construction by the conventional construction method (2) "SEP (self-elevating work platform) + CC (crawler crane)", for example, in the installation of a wind turbine with a height of 70 m, a CC with a boom length of about 100 m or more is required. Although it is necessary, it is difficult to charter a SEP equipped with such a large CC, and towing with this large CC is difficult depending on the construction site. Also, building a new ship is expensive and impractical.
[0008]
In the prior art method (3), a method of constructing a wind power generator (Japanese Patent Laid-Open No. Hei 10-205428) is a method of assembling a tower and mounting a blade with a climbing crane, and mounting a nacelle (generator) ascending along the tower. This method is performed on a gantry, but is a complicated construction method using separate devices for a crane and a movable gantry. In addition, the climbing crane requires assembly and disassembly at the time of construction work, and is particularly troublesome work at sea. In addition, it is difficult and time-consuming to mount and remove a locking member for moving the movable base up and down on the tower. Also, it is difficult to clamp the climbing crane to the tower from only one side. In addition, a foundation is required at the part where the climbing crane touches the ground.
[0009]
According to the prior art (4), a method of constructing a board-like structure and an apparatus therefor (Japanese Patent Application Laid-Open No. 2002-242483), in assembling a guide tower, a unit is incorporated downward from a certain height. In this case, incorporation of the unit downward requires equipment (rails or the like) for incorporating the unit to be horizontally moved and added under the state where the guide tower is raised. However, this construction method is particularly difficult on the sea where there is no space. In addition, assembling and disassembling the guide tower requires time and is particularly remarkable on the sea.
[0010]
An object of the present invention is to provide a method and apparatus for constructing a wind turbine generator that solves the conventional problems.
[0011]
[Means for Solving the Problems]
To achieve the above object, the present invention is configured as follows.
[0012]
A first invention provides a wind turbine for assembling and installing, on a substructure, a tower configured by adding a plurality of divided members, a generator mounted on an upper end of the tower, and a blade connected to a rotor of the generator. In the method of constructing a power generation device,
{Circle around (1)} Install a substructure having a base end of the tower,
{Circle around (2)} A mast composed of a plurality of members that rises and descends telescopically is erected on the substructure so as to surround the base end of the tower. The upper mast has a lifting device that moves horizontally,
{Circle around (3)} With the mast raised above the existing height of the divided tower, the mast is capable of supporting a vertical load, the mast members are locked by a detachable locking mechanism, and the lifting is performed. The split tower is lifted and moved horizontally by the device and positioned and joined on the existing tower,
(4) With the rise of the tower, the mast is held by the holding mechanism at the existing portion of the tower at each height as appropriate,
(5) After all the divided towers have been joined, the generator is lifted and moved horizontally by the lifting device and fixed to the top of the uppermost tower,
{Circle around (6)} Then, the blades are lifted one by one or in a state in which a plurality of blades are assembled by the lifting device, and attached to a generator rotor to complete a wind power generator.
(7) After retracting the lifting device to a position where it does not interfere with the generator and the blade, release the mast, the holding mechanism of the tower and the locking mechanism of the mast, lower the mast, and remove the mast from the foundation structure. It is characterized by being detached, lifted and removed.
[0013]
According to a second aspect of the present invention, in the first aspect, each of the divided masts that ascends and descends telescopically has a plane U-shape in which four pillars and horizontal members and diagonal members connecting the pillars are arranged on three surfaces. A lifting device is provided on a movable horizontal projecting member provided on the uppermost mast so as to be able to move up and down by lifting means provided on the divided mast, and four columns are connected to the lower part of each divided mast. A connecting mechanism and a holding mechanism consisting of jacks which advance and retreat toward the tower peripheral surface from four corner directions are provided, and a detachable locking mechanism consisting of a lock pin is provided between the divided masts of each stage. And
[0014]
A third invention is characterized in that, in the first or second invention, the substructure on which the wind turbine generator is installed supports a jacket installed on the sea floor with piles.
[0015]
A fourth invention is characterized in that, in the third invention, the legs of the outermost mast of the plurality of masts that elevate and lower telescopically are inserted into legs or piles of the jacket and erected.
[0016]
According to a fifth aspect of the present invention, in the construction device for a wind turbine generator having a generator mounted on an upper end of the tower and a rotor blade attached to the generator, the tower is configured by sequentially adding a plurality of divided towers upward. And is arranged so as to surround the existing portion of the split tower in a substantially U-shaped plane with one open side, and is non-inverted supported by the existing portion of the split tower via a holding mechanism, and moves up and down telescopically A mast comprising a plurality of possible masts, and a base structure having a tower base for joining the lowermost divided tower and having a leg or a pile of a jacket for inserting and supporting the legs of the mast, The multi-stage mast includes an elevating mechanism and a lock mechanism that can hold a position where the multi-stage mast is raised to a predetermined position, and furthermore, a horizontal And rotatably horizontal overhang member, characterized in that it comprises a lifting mechanism comprising a lifting device which is provided to be horizontally moved thereon.
[0017]
[Action]
The present invention raises a mast capable of elevating and lowering telescopically, and stably supports the tower by an existing portion of the tower via a holding mechanism, and sequentially lifts and constructs the divided tower members by a lifting device arranged above the mast. After the tower is completed, the mast stably supported by this rigid tower allows the heavy generator and the rotor blades to be lifted one after another to build a power generation facility, and after the work is completed, the mast can be quickly removed. Wear.
[0018]
More specifically, according to the present invention, (a) a slender lifting mast having low rigidity can be moved up and down telescopically, and a tower having a high rigidity compared to the mast is held at the middle of the mast by assembling the tower upward. To prevent the mast from tilting or falling.
[0019]
(B) Since the lifting mast can be moved up and down telescopically, it can be moved, installed and dismantled in a compact shape, and since the mast is operated at a height suitable for the lifting height of the lifting material, there is no extra hanging wire. The length is small and shaking due to wind and the like can be reduced.
[0020]
(C) In the construction of the offshore wind turbine, the lifting mast erected on the substructure installed on the seabed performs the lifting assembly of the divided tower, the generator and the blades, so that there is no shaking due to the influence of the waves and there is no shaking. Assembly work involving adjustment can be performed smoothly.
[0021]
(D) In the construction of the offshore wind power generator, the lifting mast leg can be inserted and erected into the leg material of the jacket-type substructure installed on the seabed, so that the mast can be easily installed and dismantled. If the legs of the mast do not match the arrangement of the legs of the jacket, a mast support plate is separately provided on the jacket and supported.
[0022]
(E) Since the lifting device at the top of the mast can be retracted to a position that does not interfere with the assembled generator and blades, the mast at the upper stage can be easily lowered when the mast is disassembled and removed after the assembly of the wind power generator. it can.
[0023]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 (a), (b) and (c) are explanatory views of first, second and third construction steps of a wind turbine generator according to the present invention, and FIGS. It is explanatory drawing of an 8th construction process.
[0024]
First, FIG. 6 shows a state at the time of completion in an example of constructing a wind turbine generator on the sea, which will be described. In the figure, a jacket-type substructure 2 is constructed on a support layer 1 on the sea floor, and the base of the tower 4 of the wind turbine generator 3 and the leg of the mast 5 are supported by the jacket-type substructure 2. . The tower 4 is constructed by adding upper, lower, middle and uppermost divided towers 4a, 4b, 4c upward, and the mast 5 is provided for construction, and is attached to and detached from the jacket-type substructure 2. Supported as possible. The mast 5 includes lower, middle, and uppermost masts 5a, 5b, and 5c, and can be moved up and down (expanded or contracted) in a telescopic (nested) manner. A generator (nacelle) 6 is mounted on the upper end of the tower 4, and a rotor blade 8 is attached to a rotor shaft 7.
[0025]
The first to eighth steps will be sequentially described with reference to FIGS.
[0026]
In the first construction process shown in FIG. 1A, a jacket-type substructure 2 is installed on a support layer 1 on the seabed, and the jacket 2 is placed above a plurality of steel pipe piles 10 cast on the support layer 1. In addition to fitting and supporting the cylindrical legs 12, the legs 12 are connected by a plurality of connecting members 11. The steel pipe pile 10 and the upper leg 12 are provided at four corners of a plane rectangle, and a tower base 4 d at the center of the leg 12 is joined to the lowermost end of the tower 4 by the connecting member 11. Is supported.
[0027]
In the second construction process shown in FIG. 1B, the mast 5 which can be moved up and down in a telescopic manner is supported by the jacket 2 in a state in which it is lowered (shrinked) to the lowest stage. Specifically, the lower end of the mast leg 13 is inserted into and supported by the leg 12 of the jacket 2 over a predetermined length via a guide portion 12a whose diameter is increased at the top. The mast 5 is formed in a U-shape with one side opened by a frame, and the masts 5a, 5b, and 5c of each stage are formed at a predetermined height. When the mast 5 is supported by the jacket 2, the tower base 4d is located inside the M-shaped mast 5 (see FIG. 7).
[0028]
In the third construction step shown in FIG. 1C, the lowermost divided tower 4a, which has been towed on the sea by the barge 14, is lifted by the lifting mechanism 15 provided at the upper end of the uppermost mast 5c. And the lower end of the divided tower 4a is carried directly above the tower base 4d.
[0029]
In the fourth construction process shown in FIG. 2, the operation shown in FIG. 1C, that is, the operation of sequentially lifting the intermediate and uppermost divided towers 4b and 4c and joining the existing tower part via the bolt joint part 24 a plurality of times is performed. This is repeated, and at the same time, the mast 5 is raised (extended) to the uppermost portion while the middle mast 5b and the uppermost mast 5c are being raised, and the tower 4 is completed.
[0030]
The fifth construction step in FIG. 3 shows a mode in which after the tower 4 is completed, the generator (nacelle) 6 is lifted using the lifting mechanism 15 at the top of the mast, and is mounted on the upper end of the tower 4.
[0031]
The sixth construction step in FIG. 4 shows a step of lifting the rotor blade 8 using the lifting mechanism 15 and connecting the central portion of the blade to the rotor shaft 7 of the generator 6.
[0032]
The seventh construction step in FIG. 5 is a front view of a step of connecting the rotor blade 8 lifted by using the lifting mechanism 15 to the rotor shaft 7 of the generator 6.
[0033]
In the eighth construction step of FIG. 6, after the rotor blade 8 is attached to the generator 6 and the wind turbine generator 3 is completed, the lifting device 21 is retracted to a position where it does not interfere with the generator 6 and the rotor blade 8, and thereafter The state before the holding mechanism of the mast 5 and the tower 4 and the lock pin (locking mechanism) of each stage mast 5 is released, and the top and middle masts 5c and 5b are lowered and disassembled is shown.
[0034]
The configuration of each unit will be described in more detail with reference to FIGS.
In the first construction step shown in FIG. 1A, the jacket 2 is submerged in the sea, and the upper end of the tower base 4d is located above the sea surface 16. The jacket 2 may be exposed on the sea surface.
[0035]
In the second construction step shown in FIG. 1 (b) to the eighth construction step shown in FIG. 6, the mast 5 supported on the leg 12 of the jacket 2 and the tower 4 added to the tower base 4d provided integrally with the jacket 2 The tower 4 is constructed by ascending while supporting each other to construct the tower 4, and the generator 6 and the rotor blades 8 are sequentially lifted and lifted by the lifting mechanism 15 above the mast. Although the mast 5 is made of a steel material that is slender, lightweight and easy to handle such as transportation and disassembly, the mast 5 is stably supported by the existing portion of the tower 4 having a high rigidity, and the heavy weight of the generator 6 and the like. Lifted materials can be reliably lifted.
[0036]
The configuration of the mast 5 will be further described. The mast 5 has a configuration in which a lowermost mast 5a, a middle mast 5b, and an uppermost mast 5c are provided so as to be housed and projectable in a nested manner inside and outside, and can be vertically moved up and down (expandable / contractible). A lifting mechanism 15 is provided above 5c. The lifting mechanism 15 is configured such that a lifting device 21 is provided on a horizontally extending member 17 that can move horizontally so that the lifting device 21 can run freely (details will be described later).
[0037]
The lower mast 5a, the middle mast 5b, and the uppermost mast 5c of the mast 5 that moves up and down telescopically are arranged horizontally around the base end 4c of the tower. The material 19 and the diagonal material 20 are arranged on three surfaces, and one surface is provided as an opening surface 23 (this mode is referred to as a flat U-shape; see FIG. 7B), and can be housed and protruded from each other (its elevation drive mechanism). The lifting guide mechanism will be described later). The masts 5a, 5b, 5c of the respective stages are lifted by the lifting device 21 from the divided towers 4a, 4b, 4c carried by the barge 14 and taken into the mast 5 through the opening surface 23. To the upper part of the tower base part 4d located inside of the base member at the bolt joint part 24 in order.
[0038]
In addition, at each stage of sequentially loading the divided towers 4a, 4b, and 4c suspended by the wire rope 22 into the inside of the U-shaped mast, the mast 5 of each stage required for lifting the divided tower is lifted up and down. If the opening surfaces 23 of the lower masts 5a, 5b, 5c are open above the lower ends of the divided towers 4a, 4b, 4c to be lifted, they do not hinder the work of loading the divided masts. For this reason, in the present embodiment, at the lower end portions of the masts 5a, 5b, and 5c, the four columns 18 are connected by the connection frame members 25 arranged in a plane quadrilateral.
[0039]
FIG. 8A shows a situation in which the existing part of the tower 4 is held at the lower end of the mast of each stage. The existing part of the tower 4 and the lower ends of the four pillars 18 of the mast 5 in each stage are shown. A holding mechanism (tower clamp) 27 including a hydraulic cylinder 26 is arranged between the connecting frame member 25 and the corner of the connecting frame member 25, and the outer peripheral surface of the tower 4 is pressed from four directions by extending the hydraulic cylinder 26. In this way, the existing portion of the rigid tower 4 is mechanically grasped, and the slender mast 5 is stably supported by the tower 4 by taking a reaction force on the tower 4 to stably lift a heavy lifting material such as the generator 6. it can.
[0040]
In the second step of FIG. 1 (b), the upper, middle and lower masts 5a, 5b, 5c of the telescopic (nested type) are housed in each other, and the crane ship (not shown) in the shortest form. After being suspended and moved to the upper part of the jacket 2, the leg 13 of the lowermost mast 5a is fitted and supported by each leg head 12a by lowering. If the legs 13 of the mast 5 do not match the arrangement of the legs 12 of the jacket 2, a support plate of the mast 5 can be separately provided and supported on the jacket 2. After the leg 13 of the mast 5 is inserted into and supported by the leg head 12a of the jacket 2, the connecting frame member 25 for joining the four pillars 18 below the lowermost mast 5a in a rectangular shape is defined as a corner. A holding mechanism 27 composed of a hydraulic cylinder 26 is arranged between the tower base 4d and the holding mechanism 27. The holding mechanism 27 is extended to apply a reaction force to the tower base 4d to stably support the lower part of the mast 5 on the jacket 2.
[0041]
Next, as shown in FIG. 1C, the lowermost divided tower 4a carried by the barge 14 is lifted by the lifting device 21 of the lifting mechanism 15, and the shortened three-stage masts 5a, 5b, 5c, through one opening surface 23 (shown in FIG. 7b), it is moved directly above the tower base 4d located inside the plane U-shaped mast, and is then slowly lowered to the lower end of the lower divided tower 4c and the tower. The upper end of the base 4d is firmly joined by the bolt joint 24.
[0042]
In the step of FIG. 1 (c), the horizontal extension member 17 of the lifting mechanism 15 has moved forward to the right end in the figure, and in this state, the lifting device 21 having a lifting machine such as a winch and a traveling mechanism is moved horizontally. The winch is wound down while running to the tip of the overhanging member 17, the divided tower 4 a is lifted by the wire rope 22 as shown in the figure while being hoisted, and the lifting device 21 moves the horizontal overhanging member 17 to the opposite side ( (Left side in the figure), the divided tower 4a is positioned on the tower base 4d, and bolted.
[0043]
Subsequently, the mast 5b in the middle stage is raised and locked by the lock pin 29 constituting the lock mechanism at the raised position (see FIGS. 2 and 10b), and the vertical load is held at the raised position so as to be supported. In addition, the intermediate division tower 4b is lifted by the lifting device 21, moved to just above the lower division tower 4a, and joined at the bolt joint 24.
[0044]
The configuration of the bolt joint 24 is shown in FIG. That is, a ring-shaped joining flange 31 having a number of bolt holes 30 in the inner circumferential direction is fixed to the upper end surface and the lower end surface of each of the divided towers 4a, 4b, 4c. After the joining flange 31 is positioned, an operator enters the tower 4 and screws the joining bolts into the bolt holes 30, whereby the upper and lower divided towers 4a, 4b, and 4c are firmly joined. When the divided towers 4a are lifted, the bolt holes 30 are also used. As shown in FIG. 8B, a lifting jig 32 attached to the lower end of the wire rope 22 of the lifting device 21 is attached to the joining flange 31. By screwing the engagement bolts 33 into the bolt holes 30 of both members, the divided towers 4a... Can be reliably suspended by the wire ropes 22. The joining flange 31 may be provided on the outer periphery of the tower 4 in some cases.
[0045]
FIG. 9A shows an arrangement of an elevating drive mechanism for elevating and lowering the masts 5a, 5b, and 5c of each stage, a guide mechanism, and a lock mechanism for locking the masts 5a, 5b, and 5c at an elevated position. FIG. 9 (b) shows a partial side view of a rack-pinion type elevating mechanism, in which a drive motor 34 is installed at the upper ends of the lower and middle masts 5a, 5b, and a pinion 35 is attached to the motor shaft. It is fixed. On the other hand, racks 36 are provided on both side surfaces of the masts 5b, 5d of each stage so as to extend in the vertical direction, and the pinion 35 of the drive motor 34 installed on the masts 5a, 5b is connected to the upper masts 5b, 5c. It is engaged with the rack 36.
[0046]
Therefore, by rotating the pinion 35 forward and reverse by the drive motor 34, the upper masts 5b and 5c can be raised and lowered by the rack 36 meshing with the pinion 35. In the embodiment, the example of the rack and pinion type elevating mechanism has been described, but a known measuring type elevating device (lift-up jack type) may be used instead.
[0047]
9 (c) and 9 (d) show a guide mechanism, which is a female side guide having guide grooves vertically spaced at four corners on the side of a lower mast 5 (the middle mast 5b is shown in the figure). A male side guide rail 38 extending vertically is provided on the side of the upper mast 5 (the uppermost mast 5c is shown in the figure), and the female side and male side guides 37, 38 are provided with each other. Sliding fits. Therefore, the upper and middle masts 5c and 5b can be stably moved up and down via the guides 37 and 38, and the masts in each stage can be stably moved up and down without unevenness.
[0048]
FIG. 9E shows a lock mechanism for the masts 5b and 5c, and an engaging member having a bolt insertion hole 39 at the upper end of the lower mast 5 (the middle mast 5b is shown in the figure). An engagement plate 42 having a bolt insertion hole 41 is fixed to a side of the upper mast 5 (shown as the uppermost mast 5c in the figure) lower than an intermediate portion. Therefore, the upper mast 5c is raised to the upper end, and when the bolt insertion hole 39 of the engagement member 42 and the bolt insertion hole 41 of the engagement plate 42 match, the lock pin which can be detachably attached to both the bolt insertion holes 39, 41. By inserting 29, the upper mast 5c can be held in a state of being pulled out to the upper limit with respect to the lower mast 5b, and the vertical mast can be supported.
[0049]
Next, the lifting mechanism 15 for horizontally moving the lifting device 21 and the horizontal extending member 17 will be described with reference to FIGS.
[0050]
In each of the drawings, a plurality of linear guide blocks 44 are provided on the upper sides of both side frames 43 of the uppermost mast 5c having a flat U shape, and linear guide rails 45 are slidably fitted in the guide grooves of the linear guide blocks 44. Supported. Since the linear guide rail 45 is provided integrally below the horizontal overhang member 17, the horizontal overhang member 17 can be horizontally moved back and forth integrally with the linear overhang member 45. As a driving means, a hydraulic cylinder for sliding 46 is provided outside the both side frames 43 of the uppermost mast 5c, and the tip of a rod 47 is connected to the horizontal extension member 17 via a connecting arm. Therefore, by operating the slide hydraulic cylinder 46, the horizontal extension member 17 can move forward and backward horizontally on the uppermost mast 5c.
[0051]
At the rear end (left end in FIG. 12) of each of the left and right horizontal overhang members 17, a slide portion fixing jig (reaction arm) 49 is attached. The hook-shaped engaging portion 50 of the fixing jig 49 is engaged from behind with an engaging concave portion (reaction force receiving concave portion) 51 formed at the rear end of the upper end of the uppermost mast 5c. Therefore, when the horizontal overhanging member 17 moves forward and lifts a load such as the generator 6 and the rotor blade 8 by the lifting device 21 located at the tip thereof, the horizontal overhanging member 17 is in a cantilever state and is located behind the horizontal overhanging member 17. The upward lifting reaction force (overturning moment) acting on the end portion can be received on the side of the uppermost mast 5c via the slide portion fixing jig 49. Since the mast 5 is supported by the tower 4 having high rigidity via the holding mechanism 27, the generator 6 and the like can be stably lifted by the lifting device 21 and can be installed at the upper end of the tower 4.
[0052]
The lifting device 21 includes a carriage 52 that is disposed across the left and right horizontal overhang members 17, and a winch 53 of a lifting mechanism mounted on the carriage 52. The carriage 52 has traveling wheels 54, and the traveling wheels 54 travel along rails 55 arranged above the horizontal overhanging members 17, so that the lifting device 21 moves horizontally on the horizontal overhanging members 17. it can. It should be noted that a known linear jack (not shown) can be used instead of the winch 53 as the lifting mechanism.
[0053]
The applicable range of the method for constructing a wind turbine generator according to the present invention can be applied not only to the sea but also to the land. In addition, the configuration of the embodiment may be appropriately changed in design and executed.
[0054]
【The invention's effect】
The present invention allows a slender lifting mast having low rigidity to be telescopically movable up and down, and the mast holds the middle of the mast at an existing tower portion while assembling a divided tower having a higher rigidity than the mast. The split tower can be lifted and moved further upward while preventing the mast from tilting and falling. In this way, construction work can be performed using a slender lifting mast that can be moved up and down telescopically, so it is possible to move, install and dismantle with this compact lifting mast shape, and use a large crane used in the conventional construction method It is unnecessary, and the installation of the wind power generator can be performed safely and securely and quickly.
[0055]
Especially on the offshore, the legs of the lifting mast can be inserted and erected into the leg material of the jacket-type substructure, making it easy to install and dismantle the mast, and constructing large offshore wind turbines that are impossible with conventional methods Is made possible.
[Brief description of the drawings]
1 (a), 1 (b) and 1 (c) are side views of first, second and third construction steps of a wind turbine generator according to the present invention.
FIG. 2 is a side view of a fourth construction step of the wind turbine generator according to the present invention.
FIG. 3 is a side view of a fifth construction step of the wind turbine generator according to the present invention.
FIG. 4 is a side view of a sixth construction step of the wind turbine generator according to the present invention.
FIG. 5 is a side view of a seventh construction step of the wind turbine generator according to the present invention.
FIG. 6 is a side view of an eighth construction step of the wind turbine generator according to the present invention.
FIGS. 7A, 7B, and 7C are cross-sectional views taken along arrows AA, BB, and CC in FIG.
FIG. 8 is a plan view showing a holding mechanism for connecting the mast and the tower.
9A is a plan view showing a mast lifting mechanism, FIG. 9B is a side view of a mast lifting drive mechanism, FIG. 9C is a side view of a guide rail, and FIG. 9D is a cross-sectional plan view of the guide rail. (E) is a sectional side view of a lock mechanism for holding the mast raised.
10A is a plan view of a lifting mechanism, and FIG. 10B is a side view of FIG. 10A.
11 (a) and 11 (b) are side views showing a movable horizontal overhang portion and a state in which a lifting device provided to be horizontally movable thereon has advanced and retracted.
[Explanation of symbols]
1 Support layer
2 jacket (jacket-type substructure)
3 Wind power generator
4 tower
4a Lower split tower
4b Split tower in the middle
4c Uppermost split tower
5 Mast
5a Lower mast
5b Middle mast
5c Top mast
6 generator
7 Rotor shaft
8 rotor blades
10 Steel pile
11 Connecting materials
12 legs
12a Leg head
13 legs
14 barges
15 Lifting mechanism
16 Sea level
17 Horizontal overhang members
18 pillars
19 Horizontal material
20 Diagonal lumber
21 Lifting device
22 wire rope
23 Opening surface
24 bolt joint
25 Connecting frame material
26 Hydraulic cylinder
27 Holding mechanism
29 Lock Pin
30 bolt hole
31 Joint flange
32 hanging jig
33 joining bolt
34 drive motor
35 Pinion
36 racks
37 Female side guide
38 Male side guide rail
39 bolt insertion hole
40 Engagement member
41 Bolt insertion hole
42 Engagement plate
43 both sides
44 Straight guide block
45 Straight guide rail
46 Slide hydraulic cylinder
47 rod
48 Connecting arm
49 Slide Fixture
50 Hook-shaped engaging part
51 Engagement recess (reaction force receiving part)
52 cart
53 winches
54 running wheels
55 guide rail

Claims (5)

In a method for constructing a wind turbine generator, a tower constructed by adding a plurality of divided members, a generator mounted on an upper end of the tower, and a blade connected to a rotor of the generator are assembled and installed on a substructure. ,
{Circle around (1)} Install a substructure having a base end of the tower,
{Circle around (2)} A mast composed of a plurality of members that rises and descends telescopically is erected on the substructure so as to surround the base end of the tower. The upper mast has a lifting device that moves horizontally,
{Circle around (3)} With the mast raised above the existing height of the divided tower, the mast is capable of supporting a vertical load, the mast members are locked by a detachable locking mechanism, and the lifting is performed. The split tower is lifted and moved horizontally by the device and positioned and joined on the existing tower,
(4) With the rise of the tower, the mast is held by the holding mechanism at the existing portion of the tower at each height as appropriate,
(5) After all the divided towers have been joined, the generator is lifted and moved horizontally by the lifting device and fixed to the top of the uppermost tower,
{Circle around (6)} Then, the blades are lifted one by one or in a state in which a plurality of blades are assembled by the lifting device, and attached to a generator rotor to complete a wind power generator.
(7) After retracting the lifting device to a position where it does not interfere with the generator and the blade, release the mast, the holding mechanism of the tower and the locking mechanism of the mast, lower the mast, and remove the mast from the foundation structure. A method for constructing a wind power generator, comprising separating, lifting and removing. Each divided mast that moves up and down in telescopic form is a flat U-shape in which four pillars and horizontal and diagonal members connecting each pillar are arranged on three surfaces, and can be moved up and down by lifting means provided on each divided mast, A lifting device is provided on a movable horizontal overhanging member provided on the uppermost mast so as to be horizontally movable, and a connecting member for connecting four pillars to a lower portion of each divided mast, and a tower peripheral from four corner directions. 2. The method according to claim 1, further comprising: a holding mechanism including a jack that advances and retreats toward a surface; and a detachable locking mechanism including a locking pin provided between divided masts of each stage. . The method for constructing a wind power generator according to claim 1 or 2, wherein the substructure on which the wind power generator is installed is a pile supported by a jacket installed on the sea floor. 4. The method according to claim 3, wherein legs of the outermost mast of the plurality of masts that elevate and lower telescopically are inserted into legs or piles of the jacket and erected. In the wind turbine generator construction device in which a generator is mounted at the upper end of the tower and a rotor blade is attached to the generator, the tower configured by sequentially adding a plurality of divided towers upward and one side has an opening. A plurality of masts which are arranged in a substantially U-shape in a plane so as to surround the existing portion of the split tower, are non-overturned by the existing portion of the split tower via a holding mechanism, and are movable up and down telescopically. And a base structure having a tower base for joining the lowermost divided tower, and a leg or a pile of a jacket for inserting and supporting the legs of the mast, wherein the masts of a plurality of stages are It has a lifting mechanism and a lock mechanism that can hold the position where the multi-stage mast has been raised to a predetermined position. Ri out member and the construction unit of the wind power generation apparatus characterized by comprising a lifting mechanism comprising a lifting device which is provided to be horizontally moved thereon.

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