Stay ring and reaction force monitoring support system of stay ring

Abstract

To adequately control reaction force from a tower acting on a stay ring.SOLUTION: A stay ring 70 is placed between a tower 11 and a guide tower 21 provided at the periphery of the tower 11 when providing the tower 11, and makes the tower 11 support the guide tower 21 through the stay ring by transferring horizontal force between the tower 11 and the guide tower 21. The stay ring 70 comprises a frame part 71 enclosing the tower 11 and supporting the guide tower 21, and multiple pressing force mechanisms 73 that are placed on a circumferential direction of the frame part 71 at intervals to each other and fixed to the frame part 71, and presses an outer peripheral surface of the tower 11. Each of the pressing force mechanisms 73 has a detection part 79 for detecting reaction force that the pressing force mechanism 73 is received from the outer peripheral surface of the tower 11.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to a stay ring and a stay ring reaction force monitoring support system. [Background technology]

[0002] In the construction of wind turbines, a lift-up device is used to transport materials to the top of the tower during construction. The lift-up device includes a guide tower installed around the tower and a lifting device supported by the guide tower and configured to be able to rise and fall.

[0003] In this construction method for wind turbines, stay rings are attached between the already constructed tower and the guide tower. The stay rings support the guide tower by transmitting horizontal force between the tower and the guide tower, thereby preventing the guide tower from collapsing.

[0004] An example of such a stay is the support mechanism described in Patent Document 1. The support mechanism includes a square frame surrounding the tower, four guide rollers provided at the four corners of the frame and supporting the columns of the guide tower, a band that fastens the tower, a means for connecting the band so that it can swing, and a length adjustment means. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Laid-Open No. 2005-120775 Summary of the Invention [Problem to be solved by the invention]

[0006] The lifting device is supported by only two of the four columns that make up the guide tower. Therefore, when the lifting device carrying heavy materials such as a nacelle moves up and down while supported by the guide tower, an eccentric force acts on the tower from the guide tower via the stay ring. For this reason, it is desirable for the stay ring to appropriately manage the reaction force from the tower that acts on it. [Means for solving the problem]

[0007] Various aspects of a stay ring and a stay ring reaction force monitoring system for solving the above problems will be described. [Aspect 1] A stay ring that is disposed between a tower and a guide tower provided around the tower when the tower is installed, and supports the guide tower on the tower by transmitting horizontal force between the tower and the guide tower, a frame portion that surrounds the tower and supports the guide tower; a plurality of pressing mechanisms that are arranged at intervals from one another in the circumferential direction of the frame portion and are fixed to the frame portion, and that press the outer peripheral surface of the tower, Each of the pressing mechanisms has a detection unit that detects a reaction force that the pressing mechanism receives from the outer circumferential surface of the tower. Stealing.

[0008] According to this configuration, the detection results of the detectors provided in each of the pressing mechanisms make it possible to constantly monitor the reaction force that each pressing mechanism receives from the outer circumferential surface of the tower, in other words, the force with which each pressing mechanism presses the outer circumferential surface of the tower. This makes it possible to adjust the reaction force that each pressing mechanism receives based on the detected reaction force. Therefore, it is possible to appropriately manage the reaction force from the tower acting on each pressing mechanism.

[0009] [Aspect 2] the tower is cylindrical; The guide tower has four support columns erected at positions corresponding to the four corners of a square, The frame portion has four frame portions extending linearly between two adjacent support columns in the circumferential direction of the guide tower, Support portions for supporting the support columns are provided at both ends of the frame portion, The pressing mechanism includes: a connecting portion connected to a corner of the frame portion; a pressing portion that presses the outer peripheral surface of the tower; an applying portion connected to the connecting portion and applying a force to the pressing portion to press the outer peripheral surface of the tower, Each of the frame portions is configured to be separable into two frame portion segments in an extension direction of the frame portion, The connecting portion is connected to both of the two frame portion segments that constitute the corner portion. 2. The staple according to embodiment 1.

[0010] According to this configuration, the stay ring is divided into four units corresponding to the four support columns of the guide tower. That is, each unit has two frame section assemblies that form the corners of the frame, a connecting section that connects these frame section assemblies, a pressing section, and an applying section that applies a force to the pressing section to press against the outer circumferential surface of the tower. In this way, because the stay ring is divided into four units, the workability of the stay ring is improved.

[0011] [Aspect 3] The application unit has a hydraulic cylinder. 3. The staple according to embodiment 2.

[0012] According to this configuration, the force with which the pressing mechanism presses the outer peripheral surface of the tower can be easily adjusted by adjusting the hydraulic pressure. [Aspect 4] The pressing mechanism includes a restricting portion that is provided between the connecting portion and the pressing portion and restricts the pressing portion from approaching the connecting portion. 4. The staple according to embodiment 3.

[0013] In the hydraulic cylinder, the hydraulic pressure may suddenly drop, which may cause a sudden drop in the force with which the pressing mechanism presses the outer circumferential surface of the tower. In this regard, with the above-described configuration, the restricting portion is provided, which restricts the pressing portion from approaching the connecting portion, thereby preventing a sudden decrease in the force with which the pressing mechanism presses the outer circumferential surface of the tower, even if the hydraulic pressure of the hydraulic cylinder suddenly drops.

[0014] Furthermore, with the above configuration, the detection unit can detect a sudden drop in hydraulic pressure in the hydraulic cylinder. [Aspect 5] The pressing mechanism includes a guide mechanism that guides movement of the pressing part along the radial direction of the tower. 5. The staple according to embodiment 4.

[0015] According to this configuration, the guide mechanism guides the movement of the pressing part along the radial direction of the tower, so that the pressing mechanism can effectively apply a pressing force along the radial direction to the outer peripheral surface of the tower.

[0016] [Aspect 6] A system for assisting in monitoring a reaction force acting on the stay ring according to any one of aspects 1 to 5, comprising: a transmitter connected to each of the detectors; A server; a worker terminal having a display unit, the transmitting unit transmits the detection results of the detecting units to the server; the server receives the detection result transmitted from the transmission unit and outputs the detection result to be displayed on the display unit; the worker terminal displays the detection result on the display unit. Staling reaction force monitoring support system.

[0017] According to this configuration, the worker can monitor the reaction forces detected by each detector by visually checking the display unit of the worker terminal, thereby assisting in monitoring the reaction forces acting on the stay ring. [Effects of the Invention]

[0018] According to the present invention, the reaction force from the tower acting on the stay ring can be appropriately managed. [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 the blade is suspended by a suspension jig of a stand on the lifting frame. [Figure 3] FIG. 3 is a plan view of a stay ring according to one embodiment. [Figure 4] FIG. 4 is an enlarged plan view showing one unit constituting the stay ring of FIG. [Figure 5] FIG. 5 is a block diagram showing the electrical configuration of a reaction force monitoring support system according to one embodiment. 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 Figure 2, the lift-up device 20 is used when installing the wind power generator 10, and includes a guide tower 21 and a lifting frame section 30 that is supported by the guide tower 21 and is configured to be able to rise and fall.

[0024] (Guide Tower 21) As shown in FIG. 2, the guide tower 21 includes a substantially square frame-shaped base 27 installed on the ground, four support columns 22 and 23 provided around the periphery of the tower 11, and a beam 24 connecting the support columns 22 and 23 to each other.

[0025] The four pillars 22, 23 are erected on the four corners of the base 27. Each pillar 22, 23 is divided into multiple parts in the vertical direction. Each pillar 22, 23 has a truss structure in the shape of a square pillar. The beam 24 also has a truss structure.

[0026] In the following description, the direction in which two of the four columns 22, 23 that are adjacent in the circumferential direction of the tower 11 are aligned with the remaining two columns 23 is referred to as the front-to-rear direction. The side on which the two columns 22 are located relative to the two columns 23 is referred to as the front side, and the opposite side is referred to as the rear side. The direction perpendicular to both the front-to-rear direction and the up-down direction is referred to as the width direction. The front-to-rear direction and the width direction are horizontal.

[0027] The beam 24 extends along the width direction or the front-rear direction and connects the adjacent columns 22 and 23 in the circumferential direction of the tower 11. 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.

[0028] (Lifting frame part 30) As shown in FIG. 2, the lifting frame unit 30 includes a pair of upper horizontal frames 31, a pair of vertical frames , and a pair of lower horizontal frames .

[0029] The pair of upper horizontal frames 31, the pair of vertical frames 34, and the pair of lower horizontal frames 35 sandwich the guide tower 21 in the width direction. The upper horizontal frame 31 protrudes forward from the guide tower 21 and extends in the front-to-rear direction. A mount 50 is disposed on the upper horizontal frame 31. The mount 50 is configured to suspend a suspending jig 60 that suspends the blades 15a, 15b, and 15c.

[0030] The vertical frame 34 extends in the up-down direction and is supported so as to be able to rise and fall relative to the guide tower 21, more specifically, the support columns 22. The vertical frame 34 is provided with a well-known lifting mechanism (not shown) that raises and lowers the lifting frame section 30.

[0031] (Staling 70) As shown in Figure 2, when installing the tower 11, the stay ring 70 is placed 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.

[0032] In this embodiment, a plurality of stay rings 70 are provided at intervals in the vertical direction. Next, the configuration of the stay ring 70 will be described in detail.

[0033] 3, the stay ring 70 includes a frame portion 71 and a plurality of pressing mechanisms 73. The stay ring 70 of this embodiment includes four pressing mechanisms 73. The frame portion 71 surrounds the tower 11 and supports the guide tower 21 .

[0034] The frame portion 71 has four frame portions 72 extending linearly between two adjacent support columns 22, 23 in the circumferential direction of the guide tower 21. Support rollers 72b that support the support columns 22, 23 are provided on both ends of the frame portions 72. The support rollers 72b correspond to the support portions.

[0035] Each of the frame portions 72 is configured to be separable into two frame portion segments 72a in the extension direction of the frame portion 72. The two frame portion segments 72a have a connecting portion 72c that is connected to each other by a bolt (not shown).

[0036] The four pressing mechanisms 73 are arranged at intervals from one another in the circumferential direction of the frame portion 71 and are fixed to the frame portion 71 , and press the outer peripheral surface of the tower 11 . As shown in Figures 3 and 4, the pressing mechanism 73 has a connecting portion 74 connected to the corner portion 71a of the frame portion 71, a pressing portion 75 that presses the outer peripheral surface of the tower 11, and an applying portion 76 that is connected to the connecting portion 74 and applies a force to the pressing portion 75 to press the outer peripheral surface of the tower 11.

[0037] The connecting portion 74 is connected to both of the two frame section segments 72a that make up the corner portion 71a. The connecting portion 74 is connected to each frame section segment 72a so as to be inclined at 45 degrees with respect to the extension direction of each frame section segment 72a.

[0038] The application unit 76 has a hydraulic cylinder. The base end of the application unit 76 is connected to the connection unit 74 so that the axis of the hydraulic cylinder extends along the radial direction of the tower 11. As shown in FIG. 4, the pressing portion 75 has a pad 75b that is arc-shaped in plan view and supports the outer peripheral surface of the tower 11, and a pressing portion main body 75a to which the pad 75b is fixed.

[0039] The pressing portion main body 75a is connected to the tip end of the applying portion 76 via a hinge 76a having an axis extending in the vertical direction. The pressing portion main body 75a is connected to the tip end of the applying portion 76 so as to be able to swing.

[0040] The pressing mechanism 73 is provided between the connecting portion 74 and the pressing portion 75 and includes a restricting portion 77 that restricts the pressing portion 75 from approaching the connecting portion 74 . The base end of the regulating portion 77 is connected to the connecting portion 74. The tip end of the regulating portion 77 is connected to the pressing portion main body 75a via a hinge 77a having an axis extending in the vertical direction. The pressing portion main body 75a is connected to the tip end of the regulating portion 77 so as to be able to swing. The regulating portion 77 in this embodiment is a manual turnbuckle. In this embodiment, a pair of regulating portions 77 are provided so as to sandwich the applying portion 76 from both sides in the circumferential direction of the frame portion 71.

[0041] The pressing mechanism 73 includes a guide mechanism 78 that guides the movement of the pressing portion 75 along the radial direction of the tower 11 . The guide mechanism 78 has a cylindrical first member 78a extending from the connecting portion 74 toward the pressing portion 75, and a cylindrical second member 78b extending from the pressing portion 75 toward the connecting portion 74 and accommodating the first member 78a. The axes of the first member 78a and the second member 78b extend along the axis of the hydraulic cylinder of the applying portion 76. In this embodiment, the pair of guide mechanisms 78 are provided to sandwich the pair of restricting portions 77 from both sides in the circumferential direction of the frame portion 71.

[0042] The pressing portions 75 of the pressing mechanisms 73 that are adjacent to each other in the circumferential direction of the frame portion 71 are connected to each other by a connecting member 81. The connecting member 81 has a connecting member main body 81a that connects the pressing portion main bodies 75a to each other, and a pad 81b that is fixed to the connecting member main body 81a and has an arc-shaped shape in a plan view, and supports the outer peripheral surface of the tower 11. The connecting member main body 81a is connected to the pressing portion main body 75a via a hinge 75c that has an axis that extends in the vertical direction. In this embodiment, a pair of connecting members 81 are provided spaced apart from each other in the vertical direction.

[0043] The stay ring 70 of this embodiment is configured by being divided into four units 80, each having two frame section segments 72a and a pressing mechanism 73 provided on the two frame section segments 72a.

[0044] Each pressing mechanism 73 has a detection unit 79 that detects the reaction force that the pressing mechanism 73 receives from the outer circumferential surface of the tower 11. The detection unit 79 is, for example, a strain sensor, and is provided between the connecting unit 74 and the applying unit 76.

[0045] <Staling 70 reaction force monitoring support system> As shown in FIG. 5, the reaction force monitoring support system for the stay ring 70 is a system that supports monitoring of the reaction force acting on the stay ring 70, and includes a transmitter 82 connected to each detector 79, a server 110, and an operator terminal 90 having a display 91.

[0046] The transmission unit 82, the server 110, and the worker terminal 90 are communicably connected via a network 100. The network 100 is, for example, the Internet. The transmission unit 82 is connected to each of the detection units 79 by wire or wirelessly. The transmission unit 82 transmits the detection results of each of the detection units 79 to the server 110.

[0047] The server 110 receives the detection result transmitted from the transmission unit 82 and outputs the detection result to the display unit 91 so that it is displayed. The worker terminal 90 displays the detection results received from the server 110 on the display unit 91 .

[0048] In this embodiment, when the detection result, i.e., the reaction force detected by the detection unit 79, becomes equal to or exceeds a threshold value, the display unit 91 is configured to display that the reaction force is an abnormal value.

[0049] Next, the operation of this embodiment will be described. Based on the detection results of the detection units 79 provided in each of the pressing mechanisms 73, it is possible to constantly monitor the reaction force that each pressing mechanism 73 receives from the outer circumferential surface of the tower 11, in other words, the force with which each pressing mechanism 73 presses the outer circumferential surface of the tower 11. This makes it possible to adjust the reaction force that each pressing mechanism 73 receives based on the detected reaction force.

[0050] Next, the effects of this embodiment will be described. (1) Because the above-described effects of this embodiment are achieved, the reaction force from the tower 11 acting on the stay ring 70 can be appropriately managed.

[0051] (2) The stay ring 70 is configured by dividing it into four units 80 corresponding to the four supports 22, 23 of the guide tower 21. That is, each unit 80 has two frame section segments 72a, a connecting portion 74 that connects these two frame section segments 72a together, a pressing portion 75, and an applying portion 76 that applies a force to the pressing portion 75 to press against the outer peripheral surface of the tower 11. In this way, because the stay ring 70 is divided into four units 80, the workability of the stay ring 70 is improved.

[0052] (3) Since the applying unit 76 has a hydraulic cylinder, the force with which the pressing mechanism 73 presses the outer peripheral surface of the tower 11 can be easily adjusted by adjusting the hydraulic pressure. (4) In the hydraulic cylinder, the hydraulic pressure may suddenly drop, which may cause a sudden drop in the force with which the pressing mechanism 73 presses the outer circumferential surface of the tower 11.

[0053] In this regard, according to the present embodiment, the restricting portion 77 is provided, which restricts the pressing portion 75 from approaching the connecting portion 74. As a result, even if the hydraulic pressure of the hydraulic cylinder suddenly drops, it is possible to prevent a sudden drop in the force with which the pressing mechanism 73 presses the outer peripheral surface of the tower 11.

[0054] Furthermore, the detection unit 79 can detect a sudden drop in the hydraulic pressure of the hydraulic cylinder. (5) The guide mechanism 78 guides the movement of the pressing part 75 along the radial direction of the tower 11. Therefore, the pressing mechanism 73 can effectively apply a pressing force along the radial direction to the outer peripheral surface of the tower 11.

[0055] (6) The worker can monitor the reaction forces detected by the detectors 79 by visually checking the display unit 91 of the worker terminal 90. This helps monitor the reaction forces acting on the stay ring 70.

[0056] <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.

[0057] When the reaction force detected by the detection unit 79 exceeds a threshold value, in addition to or instead of displaying on the display unit 91 that the reaction force is an abnormal value, an alarm may be sounded from the speaker of the worker terminal 90.

[0058] The guide mechanism 78 is not limited to having a cylindrical first member 78a and a cylindrical second member 78b. Any mechanism may be used as long as it guides the movement of the pressing portion 75 along the radial direction of the tower 11, and other mechanisms, such as a rail mechanism, may also be used. The guide mechanism 78 may also be omitted.

[0059] The application unit 76 is not limited to one having a hydraulic cylinder, but may be a screw type. In this case, the restriction unit 77 may be omitted. In addition to the detector 79 illustrated in the above embodiment, a detector that detects the reaction force that the pressing mechanism 73 receives from the outer circumferential surface of the tower 11 may be provided between the connecting portion 74 and the restricting portion 77 . [Explanation of symbols]

[0060] 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, 23...support, 24...beam, 27...base, 28...pulling rail, 30...lifting frame section, 31...upper horizontal frame, 34...vertical frame, 35...lower horizontal frame, 50...mounting base, 60...lifting jig, 70...staying, 71...frame section, 71 a...corner portion, 72...frame portion, 72a...frame portion divided body, 72b...support roller (support portion), 73...pressing mechanism, 74...connecting portion, 75...pressing portion, 75a...pressing portion main body, 75b...pad, 75c...hinge, 76...applying portion, 76a...hinge, 77...regulating portion, 77a...hinge, 78...guide mechanism, 78a...first member, 78b...second member, 79...detecting portion, 80...unit, 81...connecting member, 81a...connecting member main body, 81b...support pad, 82...transmitting portion, 90...operator terminal, 91...display portion, 100...network, 110...server.

Claims

1. A stay ring that is disposed between a tower and a guide tower provided around the tower when the tower is installed, and supports the guide tower on the tower by transmitting horizontal force between the tower and the guide tower, a frame portion that surrounds the tower and supports the guide tower; a plurality of pressing mechanisms that are arranged at intervals from one another in the circumferential direction of the frame portion and are fixed to the frame portion, and that press the outer peripheral surface of the tower, Each of the pressing mechanisms has a detection unit that detects a reaction force that the pressing mechanism receives from the outer circumferential surface of the tower. Stealing.

2. the tower is cylindrical; The guide tower has four support columns erected at positions corresponding to the four corners of a square, The frame portion has four frame portions extending linearly between two adjacent support columns in the circumferential direction of the guide tower, Support portions for supporting the support columns are provided at both ends of the frame portion, The pressing mechanism includes: a connecting portion connected to a corner of the frame portion; a pressing portion that presses the outer peripheral surface of the tower; an applying portion connected to the connecting portion and applying a force to the pressing portion to press the outer peripheral surface of the tower, Each of the frame portions is configured to be separable into two frame portion segments in an extension direction of the frame portion, The connecting portion is connected to both of the two frame portions that constitute the corner portion. The stay ring of claim 1 .

3. The application unit has a hydraulic cylinder. The stay ring according to claim 2 .

4. The pressing mechanism includes a restricting portion that is provided between the connecting portion and the pressing portion and restricts the pressing portion from approaching the connecting portion. The stay ring according to claim 3.

5. The pressing mechanism includes a guide mechanism that guides movement of the pressing part along the radial direction of the tower.

5. The staple according to claim 4.

6. A system for assisting in monitoring a reaction force acting on the stay ring according to any one of claims 1 to 5, a transmitter connected to each of the detectors; A server; a worker terminal having a display unit, the transmitting unit transmits the detection results of the detecting units to the server; the server receives the detection result transmitted from the transmission unit and outputs the detection result to be displayed on the display unit; the worker terminal displays the detection result on the display unit. Staling reaction force monitoring support system.

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