Lift-up device

Abstract

To suppress a vertical frame to be displaced away outward in a width direction from a front support pillar.SOLUTION: A lift-up device includes a guide tower 21 and a vertical movable device 40. The guide tower 21 has a pair of front support pillars 22, and a pair of rear support pillars. The front support pillars 22 and the rear support pillars adjacent in a front-rear direction are connected via a beam material. An inner rail 32 and an outer rail 33 extending in a vertical direction are fixed respectively to side surfaces 22a, 22b of an inner side and an outer side of the front support pillar 22 in a width direction. The vertical movable device 40 has: a pair of vertical frames 41 arranged adjacent to each other on an outer side in a width direction with respect to the pair of front support pillars 22; a lifting mechanism attached to the vertical frame 41 and lifting the vertical frame 41 with respect to the front support pillar 22; and a pinching mechanism 50 including an inner roller 52 and an outer roller 53 provided to slide on the inner rail 32 and the outer rail 33 respectively and pinching the front support pillar 22 in a width direction.SELECTED DRAWING: Figure 5

Description

[Technical Field]

[0001] The present invention relates to a lift-up device. [Background technology]

[0002] In a construction method for constructing a wind power generator, a lift-up device is used to transport materials to the top of the tower under construction (see, for example, Patent Document 1). The lift-up device includes a guide tower that is installed around the tower, and a lifting device that is supported by the guide tower and is configured to be able to move up and down along the guide tower.

[0003] The guide tower has a pair of front support columns spaced apart in the width direction and connected to each other, and a pair of rear support columns located behind the pair of front support columns, spaced apart in the width direction and connected to each other. The front support columns and rear support columns adjacent to each other in the fore-and-aft direction are connected via beam members.

[0004] A front rail and a rear rail extending in the up-down direction are fixed to the front and rear surfaces of the front support pillar, respectively. The lifting device has a pair of vertical frames arranged adjacent to the pair of front support columns on the outer sides in the width direction. A lifting mechanism is attached to the vertical frames to raise and lower the vertical frames relative to the front support columns. The lifting device has front rollers and rear rollers slidably mounted on front rails and rear rails, respectively.

[0005] A pair of frames extending along the front-rear direction are connected to the upper ends of the pair of vertical frames, respectively. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Japanese Patent Application Laid-Open No. 2005-120775 Summary of the Invention [Problem to be solved by the invention]

[0007] The pair of frames are equipped with a platform for suspending loads, such as tower segments, a nacelle, and hubs that make up the rotor. Therefore, the weight of the platform and the suspended load acts on the widthwise center of the lifting device. This exerts a force on the vertical frame, tending to move it outward in the widthwise direction from the front support. This force increases as wind turbines become larger. For this reason, there is a need to prevent the vertical frame from moving outward in the widthwise direction from the front support, even when the weight of the suspended load increases. [Means for solving the problem]

[0008] Various aspects of the lift-up device for solving the above problems will be described below. [Aspect 1] A lift-up device comprising: a guide tower provided around a tower of a wind power generator; and a lifting device supported by the guide tower and configured to be able to move up and down along the guide tower, When a direction perpendicular to the up-down direction is defined as a front-rear direction, and a direction perpendicular to both the up-down direction and the front-rear direction is defined as a width direction, The guide tower is a pair of front support columns spaced apart in the width direction and connected to each other; a pair of rear support columns located rearward of the pair of front support columns, spaced apart in the width direction, and connected to each other; The front support pillar and the rear support pillar that are adjacent to each other in the front-rear direction are connected via a beam member, an inner rail and an outer rail extending along the up-down direction are fixed to inner and outer side surfaces of the front support pillar in the width direction, respectively; The lifting device is a pair of vertical frames arranged adjacent to each other on the outer sides of the pair of front support columns in the width direction; a lifting mechanism attached to the vertical frame and configured to raise and lower the vertical frame relative to the front support column; a clamping mechanism including an inner roller and an outer roller slidably provided on the inner rail and the outer rail, respectively, and clamping the front support column in the width direction; Lift-up device.

[0009] According to this configuration, the front support column is clamped by the inner roller and the outer roller of the clamping mechanism so as to be slidable in the width direction, thereby preventing the vertical frame from separating outward from the front support column in the width direction.

[0010] [Aspect 2] The plurality of clamping mechanisms are provided at intervals from one another in the up-down direction. The lift-up device according to aspect 1.

[0011] With this configuration, the vertical frame is prevented from separating outward in the width direction from the front support columns at multiple locations in the up-down direction, thereby effectively preventing the vertical frame from separating outward in the width direction from the front support columns.

[0012] [Aspect 3] The clamping mechanism includes a support arm connected to a front surface of the vertical frame and supporting the inner roller. The lift-up device according to aspect 1 or aspect 2.

[0013] According to this configuration, the support arm that supports the inner roller is connected to the front surface of the vertical frame, which makes it easy to set the inner roller at a position away from the vertical frame. [Aspect 4] The support arm is configured to be detachable from the vertical frame. The lift-up device according to aspect 3.

[0014] The lifting device has a clamping mechanism with an inner roller, which causes the following inconvenience when removing the lifting device from the guide tower: The inner roller interferes, making it impossible to move the vertical frame outward in the width direction relative to the front support column. Therefore, the lifting device must be pulled upward relative to the front support column.

[0015] In this regard, with the above-described configuration, the support arm that supports the inner roller can be removed from the vertical frame, so that the lifting device can be removed from the front support column by moving the vertical frame outward in the width direction relative to the guide tower, making it easy to remove the lifting device from the guide tower.

[0016] [Aspect 5] a front rail and a rear rail extending along the up-down direction are fixed to the front and rear surfaces of the front support pillar, respectively; The lifting device has a front roller and a rear roller that are slidably provided on the front rail and the rear rail, respectively. The lift-up device according to any one of the first to fourth aspects.

[0017] According to this configuration, the front support column is sandwiched between the front rollers and the rear rollers so as to be slidable in the front-rear direction, thereby preventing the vertical frame from separating from the front support column in the front-rear direction. [Effects of the Invention]

[0018] According to the present invention, the vertical frame can be prevented from moving away from the front support pillar outward in the width direction. [Brief explanation of the drawings]

[0019] [Figure 1] FIG. 1 is a perspective view of a wind power generator according to one embodiment. [Figure 2] FIG. 2 is a perspective view showing a state in which a blade is suspended by a suspension jig of a stand disposed on an elevation device of a lift-up device according to one embodiment. [Figure 3] FIG. 3 is a perspective view of the lift-up device, focusing on the lifting device of FIG. [Figure 4] 4 is a front view of the lift-up device showing the vertical frame, the clamping mechanism, and the guide tower of the lifting device of FIG. 2. FIG. [Figure 5] FIG. 5 is an enlarged front view of the right vertical frame of FIG. [Figure 6] FIG. 6 is a cross-sectional view taken along line 6-6 in FIG. [Figure 7] FIG. 7 is a cross-sectional view taken along line 7-7 in FIG. [Figure 8] FIG. 8 is an enlarged cross-sectional view showing a main part of FIG. [Figure 9] FIG. 9 is a cross-sectional view taken along line 9-9 in FIG. [Figure 10] FIG. 10 is a side view of the lower part of the guide tower. [Figure 11] FIG. 11 is a front view showing the vertical frame at its lowest position, in preparation for removal from the guide tower. [Figure 12] FIG. 12 is a front view showing the state in which the vertical frame is being removed from the guide tower. DETAILED DESCRIPTION OF THE INVENTION

[0020] Hereinafter, an embodiment will be described with reference to the drawings. <Wind turbine generator 10> As shown in FIG. 1, a wind turbine generator 10 includes a tower 11 installed on a foundation, a nacelle 12 installed on the top of the tower 11, and a rotor 13 attached to the nacelle 12.

[0021] The tower 11 is formed by stacking a plurality of towers 11a to 11e. The tower 11 is formed of, from the bottom up, a bottom tower 11a, three middle towers 11b to 11d, and a top tower 11e. The tower 11 is cylindrical.

[0022] The rotor 13 has a hub 14 and a plurality of blades 15a, 15b, and 15c extending radially from the hub 14. The hub 14 is provided with a plurality of blade attachment openings 14a, 14b, and 14c to which the base ends of the plurality of blades 15a, 15b, and 15c are attached, respectively (see FIG. 2). In this embodiment, three blades 15a, 15b, and 15c are provided at 120-degree intervals around the hub 14.

[0023] <Lift-up device 20> As shown in FIG. 2, the lift-up device 20 includes a guide tower 21 provided around the tower 11, and a lifting device 40 supported by the guide tower 21 and configured to be able to move up and down along the guide tower 21.

[0024] In the following description, a direction perpendicular to the up-down direction is referred to as a front-rear direction, and a direction perpendicular to both the up-down direction and the front-rear direction is referred to as a width direction. The front-rear direction and the width direction are horizontal directions.

[0025] (Guide Tower 21) As shown in FIG. 2, the guide tower 21 includes a substantially square frame-shaped base 27 installed on the ground, and four support columns 22 and 23 erected on the four corners of the base 27.

[0026] The four pillars 22, 23 include a pair of front pillars 22 spaced apart in the width direction and connected to each other, and a pair of rear pillars 23 located behind the pair of front pillars 22, spaced apart in the width direction, and connected to each other.

[0027] The pair of front support columns 22 are connected to each other via a beam 24. The pair of rear support columns 23 are connected to each other via a beam 25. The front support columns 22 and rear support columns 23 that are adjacent in the front-to-rear direction are connected to each other via a beam 26.

[0028] Each of the pillars 22, 23 is divided into a plurality of parts in the vertical direction. Each of the pillars 22, 23 has a truss structure in the shape of a square pillar. The beams 24 to 26 also have a truss structure. The guide tower 21 includes a pair of lead-in rails 28 that are installed on the ground. The pair of lead-in rails 28 extend in the front-rear direction and are connected to the front end of the base 27.

[0029] A stay ring 29 is disposed between the tower 11 and the guide tower 21, and supports the guide tower 21 on the tower 11 by transmitting horizontal force between the tower 11 and the guide tower 21. In this embodiment, a plurality of stay rings 29 are provided at intervals from one another in the vertical direction.

[0030] 7 and 9, a front rail 30 and a rear rail 31 extending in the up-down direction are fixed to the front surface 22c and the rear surface 22d of the front support 22, respectively. The front rail 30 and the rear rail 31 are arranged to sandwich the front support 22. The front rail 30 and the rear rail 31 are provided outward of the beam material 26 in the width direction.

[0031] An inner rail 32 and an outer rail 33 extending in the up-down direction are fixed to the inner and outer side surfaces 22a, 22b, respectively, in the width direction of the front support column 22. The inner rail 32 and the outer rail 33 are arranged so as to sandwich the front support column 22. The inner rail 32 and the outer rail 33 are provided forward of the beam material 24.

[0032] (Lifting device 40) As shown in FIGS. 2 and 3, the lifting device 40 has a pair of vertical frames 41, a pair of upper horizontal frames 42, and a pair of lower horizontal frames 43.

[0033] The vertical frame 41 is disposed adjacent to the front support column 22 on the outer side in the width direction. The vertical frame 41 extends in the up-down direction. The vertical frame 41 has a truss structure.

[0034] An upper horizontal frame 42 is connected to the upper end of the vertical frame 41. The upper horizontal frame 42 protrudes forward from the vertical frame 41 and extends along the front-to-rear direction.

[0035] A lower horizontal frame 43 is connected to the lower end of the vertical frame 41. The lower horizontal frame 43 protrudes rearward from the vertical frame 41 and extends in the front-to-rear direction.

[0036] A stand 60 is disposed on the pair of upper horizontal frames 42. The stand 60 is configured to suspend a suspending jig 70. The suspending jig 70 suspends the blades 15a, 15b, and 15c.

[0037] As shown in Fig. 4, the lifting device 40 is attached to a vertical frame 41 and has a lifting mechanism 44 that raises and lowers the vertical frame 41 relative to the front support column 22. In this embodiment, two lifting mechanisms 44 are arranged side by side in the vertical direction relative to the vertical frame 41. Note that Fig. 4 only shows the vertical frame 41, the lifting mechanisms 44, and a clamping mechanism 50 (described later) that constitute the lifting device 40.

[0038] (Front roller 46, rear roller 47) As shown in FIGS. 3 and 6, the lifting device 40 includes a front roller 46 and a rear roller 47 that guide the vertical frame 41 as it moves up and down.

[0039] The front roller 46 and the rear roller 47 are provided so as to be slidable on the front rail 30 and the rear rail 31, respectively. A plurality of front rollers 46 are provided at intervals in the vertical direction.

[0040] A plurality of rear rollers 47 are provided at intervals in the vertical direction. In this embodiment, a total of three front roller sets 48, including two upper and two lower front rollers 46, are attached to mounting portions fixed to the front surface of the vertical frame 41. One front roller set 48 is provided at the upper end of the vertical frame 41. Two front roller sets 48 are provided at the lower end of the vertical frame 41, lined up one above the other.

[0041] In this embodiment, a total of two rear roller sets 49 including two upper and lower rear rollers 47 are attached to attachment portions fixed to the rear surface of the vertical frame 41. One rear roller set 49 is provided at the upper end of the vertical frame 41. Another rear roller set 49 is provided at the lower end of the vertical frame 41.

[0042] 8, a pair of flanges 47a are provided on both axial ends of the rear roller 47, protruding toward the outer periphery of the rear roller 47 and engaging with the side surfaces of the rear rail 31. Although not shown, a pair of flanges similar to those on the rear roller 47 are also provided on both widthwise ends of the front roller 46.

[0043] <Details of the front rail 30, rear rail 31, inner rail 32, and outer rail 33> 7 and 9 to 11, a first rail 34 extending in the vertical direction and having an L-shaped cross section is fixed to the front and outer corners in the width direction of the front support column 22. A flat front rail 30 and an outer rail 33 are integrally formed on the front surface and outer surface in the width direction of the first rail 34, respectively (see FIGS. 7 and 9).

[0044] As shown in FIG. 10, the first rail 34 has a rail main body 34a and a rail segment 34c. The rail main body 34a extends in the vertical direction and has a notch 34b where a portion of the rail main body 34a is cut away in the vertical direction. The rail main body 34a is fixed non-detachably to the front support column 22. In this embodiment, the rail main body 34a is fixed to the front support column 22 by welding.

[0045] The rail segment 34c is detachably fixed at the cutout 34b to the front support column 22. In this embodiment, the rail segment 34c is detachably fixed to the front support column 22 via a bolt (not shown).

[0046] 7 to 10, a second rail 35 extending in the vertical direction and having an L-shaped cross section is fixed to the rear, outer corner in the width direction of the front support column 22. A flat plate-shaped rear rail 31 is integrally formed on the rear surface of second rail 35 (see FIG. 8).

[0047] As shown in FIG. 10, the second rail 35 has a rail main body 35a and a rail segment 35c. Similar to the rail main body 34a of the first rail 34, the rail main body 35a extends in the vertical direction and has a notch 35b formed by cutting out a portion of the rail main body 35a in the vertical direction. The rail main body 35a is fixed to the front support column 22 in an undetachable manner. In this embodiment, the rail main body 35a is fixed to the front support column 22 by welding.

[0048] The rail segment 35c is detachably fixed at the cutout 35b to the front support column 22. In this embodiment, the rail segment 35c is detachably fixed to the front support column 22 via a bolt (not shown).

[0049] 7, 9, and 10, a third rail 36 extending in the vertical direction and having an L-shaped cross section is fixed to the front, widthwise inner corner of the front support column 22. A flat inner rail 32 is integrally formed on the inner widthwise surface of the third rail 36.

[0050] As shown in FIG. 10, third rail 36 differs in configuration from first rail 34 and second rail 35 in that it does not have any cutouts or rail segments. The third rail 36 is fixed non-detachably to the front support column 22. In this embodiment, the third rail 36 is fixed to the front support column 22 by welding.

[0051] As shown in FIG. 10, the first rail 34 has two notches 34b, and the second rail 35 has two notches 35b, which are spaced apart in the vertical direction. 11, when the lifting device 40 (vertical frame 41) is in the lowest position, the upper cutout 34b is provided above the upper one of the three front roller sets 48. When the lifting device 40 (vertical frame 41) is in the lowest position, the lower cutout 34b is provided above the lower two of the three front roller sets 48.

[0052] 12, the vertical length of the upper cutout 34b is slightly greater than the vertical length of the upper front roller set 48. The vertical length of the lower cutout 34b is slightly greater than the vertical length of the two lower front roller sets 48.

[0053] The position and vertical length of cutout portion 35b of second rail 35 are the same as those of cutout portion 34b of first rail 34. The lifting device 40 is configured to be removable from the front support 22 by moving the front roller 46 and the rear roller 47 outward in the width direction through the cutout portion 34b when the rail segments 34c, 35c are removed.

[0054] (Pinch mechanism 50) 3 to 5 and 9, the lifting device 40 has a clamping mechanism 50 that clamps the front support column 22 in the width direction. A plurality of clamping mechanisms 50 are provided at intervals from one another in the vertical direction. In this embodiment, two clamping mechanisms 50 are provided, one on top and one on bottom, on one front support column 22. That is, the lifting device 40 has a total of four clamping mechanisms 50.

[0055] As shown in FIG. 5, the clamping mechanism 50 includes an inner roller 52 and an outer roller 53 that are slidably provided on the inner rail 32 and the outer rail 33, respectively. As shown in Figures 3 to 5 and 9, the clamping mechanism 50 has a support arm 51 that is connected to the vertical frame 41 and supports an inner roller 52. The support arm 51 extends along the width direction. The support arm 51 is configured to be detachable from the vertical frame 41. The support arm 51 is detachably fixed to the front surface of the vertical frame 41 by a bolt (not shown).

[0056] An inner roller 52 is rotatably supported by the tip of the support arm 51. In this embodiment, one inner roller 52 is provided above and one below the tip of the support arm 51.

[0057] As shown in FIGS. 5, 6 and 9, the outer rollers 53 are in sliding contact with the outer rails 33 through openings that open on the inner side surfaces of the vertical frame 41 in the width direction. 5 and 6, in the upper clamping mechanism 50, an outer roller 53 is provided below the upper support arm 51. In this embodiment, two outer rollers 53 are provided spaced apart from each other in the vertical direction.

[0058] In the lower clamping mechanism 50, an outer roller 53 is provided above the lower support arm 51. In this embodiment, two outer rollers 53 are provided spaced apart from each other in the vertical direction.

[0059] Next, the procedure for removing the lifting device 40 from the front support column 22 will be described with reference to FIGS. 11, the lifting device 40 is lowered to the lowest position. In this state, the members of the lifting device 40 (such as the upper horizontal frame 42 and the lower horizontal frame 43) other than the vertical frame 41, the lifting mechanism 44, the front roller set 48, the rear roller set 49, and the clamping mechanism 50 are removed.

[0060] Next, the rail segments 34c and 35c are removed from the front support 22. Also, the support arm 51 of the clamping mechanism 50 is removed from the vertical frame 41. Next, as shown in FIG. 12, the lifting mechanism 44 is raised until the front roller set 48 (front rollers 46) and the rear roller set 49 (rear rollers 47) are at the height of the corresponding cutouts 34b, 35b, respectively.

[0061] Then, the front roller 46 and the rear roller 47 are moved outward in the width direction through the cutouts 34b and 35b, whereby the lifting device 40 is removed from the front support column 22. Next, the effects of this embodiment will be described.

[0062] (1) The lifting device 40 includes an inner roller 52 and an outer roller 53 that are slidably mounted on the inner rail 32 and the outer rail 33, respectively, and has a clamping mechanism 50 that clamps the front support 22 in the width direction.

[0063] With this configuration, the front support column 22 is clamped so as to be slidable in the width direction by the inner roller 52 and the outer roller 53 of the clamping mechanism 50. Therefore, the vertical frame 41 can be prevented from separating outward from the front support column 22 in the width direction.

[0064] (2) A plurality of clamping mechanisms 50 are provided at intervals in the vertical direction. This configuration prevents the vertical frame 41 from moving outward in the width direction from the front support columns 22 at multiple locations in the up-down direction. Therefore, the vertical frame 41 can be effectively prevented from moving outward in the width direction from the front support columns 22.

[0065] (3) The support arm 51 that supports the inner roller 52 is connected to the front surface of the vertical frame 41. This makes it easy to set the inner roller 52 at a position away from the vertical frame 41.

[0066] (4) Because the lifting device 40 includes the clamping mechanism 50 that supports the inner roller 52, the following inconvenience occurs when removing the lifting device 40 from the guide tower 21. That is, the inner roller 52 interferes, making it impossible to move the vertical frame 41 outward in the width direction relative to the front support column 22. For this reason, the lifting device 40 must be pulled upward relative to the front support column 22.

[0067] In this regard, with the above-described configuration, the support arms 51 that support the inner rollers 52 can be removed from the vertical frames 41, and therefore the lifting device 40 can be removed from the front support columns 22 by moving the vertical frames 41 outward in the width direction relative to the guide tower 21. Therefore, the lifting device 40 can be easily removed from the guide tower 21.

[0068] (5) The front support column 22 is slidably held between the front rollers 46 and the rear rollers 47 in the front-rear direction. This prevents the vertical frame 41 from separating from the front support column 22 in the front-rear direction.

[0069] (6) Providing the clamping mechanism 50 can prevent the vertical frame 41 from moving outward in the width direction from the front support column 22. This can prevent wear caused by contact of the front rollers 46 with the front rail 30, wear caused by contact of the rear rollers 47 with the rear rail 31, and wear of the bearings (not shown) that rotatably support the front rollers 46 and the rear rollers 47.

[0070] (7) With the rail segments 34c, 35c removed from the front support 22 of the guide tower 21, the lifting device 40 can be removed from the front support 22 by moving the front rollers 46 and the rear rollers 47 outward in the width direction through the cutouts 34b, 35b. This allows the lifting device 40 to be easily removed from the front support 22 without having to be pulled upward.

[0071] (8) The rail segments 34c and 35c are detachably fixed to the front support 22 via bolts. With this configuration, the rail segments 34c, 35c can be easily attached to and detached from the front support 22 by attaching and detaching the bolts.

[0072] (9) The front roller set 48 has two front rollers 46. Therefore, compared to when there is one front roller 46, the load acting on the single front roller 46 can be dispersed, thereby making it possible to reduce the size of the front roller 46. The same is true for the rear roller set 49.

[0073] <Example of change> This embodiment can be modified as follows: This embodiment and the following modifications can be combined and implemented within the scope of technical compatibility.

[0074] In the above embodiment, the lifting device 40 is illustrated as having three front roller sets 48, but the number of front roller sets 48 may be changed as needed, for example, to the same number as the rear roller sets 49.

[0075] In the above embodiment, the lifting device 40 is provided with two rear roller sets 49, but the number of rear roller sets 49 may be changed as needed, for example, to the same number as the front roller sets 48.

[0076] The front roller set 48 is not limited to having two front rollers 46, but may have one front roller 46. Furthermore, the rear roller set 49 is not limited to having two rear rollers 47, but may have one rear roller 47.

[0077] The front roller 46 and the rear roller 47 may be omitted. The manner in which the rail segments 34c, 35c are fixed to the front support 22 is not limited to using bolts, but may also be using pins, for example.

[0078] The support arm 51 of the clamping mechanism 50 may be configured to be non-detachable from the vertical frame 41. The clamping mechanism 50 is not limited to one having a support arm 51. In short, it is sufficient if it includes an inner roller 52 and an outer roller 53 that are slidably mounted on the inner rail 32 and the outer rail 33, respectively, and clamps the front support 22 in the width direction.

[0079] Three or more clamping mechanisms 50 may be provided at intervals in the vertical direction for one vertical frame 41. Also, one clamping mechanism 50 may be provided for one vertical frame 41. [Explanation of symbols]

[0080] 10...wind turbine generator, 11...tower, 11a...bottom tower, 11b to 11d...middle tower, 11e...top tower, 12...nacelle, 13...rotor, 14...hub, 14a to 14c...blade mounting port, 15a to 15c...blade, 20...lift-up device, 21...guide tower, 22...front support, 22a, 22b...side, 22c...front, 22d...rear, 23...rear support, 24 to 26...beam, 27...base, 28...pulling rail, 29...staying, 30...front rail, 31...rear rail, 32...inner rail, 33...outer rail, 34 ...First rail, 34a...rail main body, 34b...cutout portion, 34c...rail segment, 35...second rail, 35a...rail main body, 35b...cutout portion, 35c...rail segment, 36...third rail, 40...lifting device, 41...vertical frame, 42...upper horizontal frame, 43...lower horizontal frame, 44...lifting mechanism, 45...guide roller, 46...front roller, 47...rear roller, 47a...flange, 48...front roller set, 49...rear roller set, 50...clamping mechanism, 51...support arm, 52...inner roller, 53...outer roller, 60...mounting stand, 70...hanging jig.

Claims

1. A lift-up device comprising: a guide tower provided around a tower of a wind power generator; and a lifting device supported by the guide tower and configured to be able to move up and down along the guide tower, When a direction perpendicular to the up-down direction is defined as a front-rear direction, and a direction perpendicular to both the up-down direction and the front-rear direction is defined as a width direction, The guide tower is a pair of front support columns spaced apart in the width direction and connected to each other; a pair of rear support columns located rearward of the pair of front support columns, spaced apart in the width direction, and connected to each other; The front support pillar and the rear support pillar that are adjacent to each other in the front-rear direction are connected via a beam member, an inner rail and an outer rail extending along the up-down direction are fixed to inner and outer side surfaces of the front support pillar in the width direction, respectively; The lifting device is a pair of vertical frames arranged adjacent to each other on the outer sides of the pair of front support columns in the width direction; a lifting mechanism attached to the vertical frame and configured to raise and lower the vertical frame relative to the front support column; a clamping mechanism including an inner roller and an outer roller slidably provided on the inner rail and the outer rail, respectively, and clamping the front support column in the width direction; Lift-up device.

2. The plurality of clamping mechanisms are provided at intervals from one another in the up-down direction. The lift-up device according to claim 1 .

3. The clamping mechanism includes a support arm connected to the vertical frame and supporting the inner roller. The lift-up device according to claim 1 or 2.

4. The support arm is configured to be detachable from the front surface of the vertical frame. The lift-up device according to claim 3.

5. a front rail and a rear rail extending along the up-down direction are fixed to the front and rear surfaces of the front support pillar, respectively; The lifting device has a front roller and a rear roller that are slidably provided on the front rail and the rear rail, respectively. The lift-up device according to claim 1 .

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