WO2014122767A1

WO2014122767A1 - Tower for wind-power generating device

Info

Publication number: WO2014122767A1
Application number: PCT/JP2013/053007
Authority: WO
Inventors: 一村田
Original assignee: 三菱重工業株式会社
Priority date: 2013-02-08
Filing date: 2013-02-08
Publication date: 2014-08-14

Abstract

The present invention is provided with at least one cylindrical tower shell, and a load transmitting structure for transmitting an interior-part support load of a tower to the tower shell. The load transmitting structure includes: a steel pipe group comprising a plurality of steel pipes connected vertically; a guide wire that is inserted through the plurality of steel pipes; and a holding part that is provided to the ends of the steel wire group and holds the steel wire group to the tower shell. The interior parts of the tower are attached directly or indirectly to the steel pipes.

Description

Wind turbine tower

This disclosure relates to a tower of a wind power generator in which interior parts such as floor boards and ladders are arranged in the interior space of the tower.

Generally, in a wind turbine generator, a monopole tower that supports a rotor and a nacelle with a cylindrical support structure is often used. In a large-scale wind power generator, the height of the tower may range from several tens of meters to over 100 m. Therefore, from the viewpoint of manufacturing and transportation, the tower is usually divided into a plurality of cylindrical sections.

The interior of the tower is usually equipped with interior items such as a floor for work and electrical equipment installation, a ladder for raising and lowering, and a support for fixing cables. Conventionally, these interior parts are fixed to the tower side by directly welding the member or support to the tower shell or by fastening the member or support to the bracket welded to the tower shell with a bolt. However, in that case, stress concentration occurs around the welded part of the tower shell (for example, the weld toe), and the fatigue strength category of the tower decreases, and the thickness of the tower shell to secure the required fatigue strength is reduced. Since it increases and the weight of the tower increases, it is not desirable to weld members such as brackets and interior parts directly to the tower shell.

Therefore, various methods for attaching the interior parts to the tower without directly welding the interior parts and brackets to the tower shell have been proposed. For example, Patent Document 1 discloses a configuration in which a beam is bridged between flanges provided at the upper and lower ends of each section of a tower and an interior part is attached to the beam. Patent Documents 2 to 4 disclose a configuration in which an interior part is attached to a wire (or chain) stretched between flanges of each section of the tower. In this configuration, in order to support the interior product in the middle of the wire, a lock member that fixes the interior product to the wire by friction with the wire is provided. Further, Patent Documents 5 and 6 disclose a configuration in which an interior product is attached to the tower shell by an attachment jig using magnetic force.

US Patent Application Publication No. 2009/0031668 European Patent Application Publication No. 2385250 US Patent Application Publication No. 2010/0122508 US Patent Application Publication No. 2011/0252720 US Patent Application Publication No. 2011/0252738 US Patent Application Publication No. 2010/0186342

By the way, the mounting mechanism of the interior parts to the tower should be able to freely select the mounting position of the interior parts so that the interior parts can be installed in an appropriate space position in the tower and the layout can be changed. Is desirable. Furthermore, since the interior goods include heavy objects such as floor boards and transformers, an attachment mechanism that can stably support even heavy interior goods is required.

In this respect, according to the methods of Patent Documents 1 to 6, although the degree of freedom of the attachment position of the interior parts is relatively large, it cannot be said that sufficient measures are taken for stable support of heavy objects. In other words, when the interior parts are supported on the tower side via the beam, the beam spanned between the flanges at the upper and lower ends of each section is long, so that when a compressive load or bending load is applied, buckling or bending is applied. Deformation may occur. In addition, when the interior part is supported on the tower side via a wire, in order to generate a frictional force that can support a heavy object, the lock member must be strongly tightened to the wire, and further, Since the load acts, the durability of the wire may be impaired.

An object of at least one embodiment of the present invention is to allow interior products to be mounted in the tower without welding interior products, brackets, etc. to the tower shell, and to be able to freely select the mounting position of the interior products, in addition to weight. An object of the present invention is to provide a tower of a wind power generator that can stably support interior parts even on a thing on the tower side.

A tower of a wind turbine generator according to at least one embodiment of the present invention is a tower of a monopole type wind turbine generator, and includes at least one tower shell having a cylindrical shape and a supporting load of interior components of the tower. A load transmission structure for transmitting to the shell, wherein the load transmission structure includes a steel pipe group composed of a plurality of steel pipes arranged continuously along a vertical direction, a guide wire inserted through the plurality of steel pipes, A support portion provided at an end of the steel pipe group for supporting the steel pipe group to the tower shell, wherein at least one interior part of the tower is directly or indirectly attached to the steel pipe. It is characterized by that.
In the present specification, “along the vertical direction” does not mean that it is completely parallel to the vertical direction.

According to the tower of the wind power generator, since the interior product is attached to the steel pipe provided in the space in the tower, the interior product can be supported on the tower side without directly welding the interior product to the tower shell. . Thereby, the fall of the fatigue strength category of the tower by attachment of interior goods can be prevented, and the weight of the tower can also be reduced. Moreover, since the steel pipe group is arrange | positioned so that it may continue along a perpendicular direction in the tower interior space, if the steel pipe which attaches interior goods is selected suitably, an interior goods can be fixed to the desired position of the tower interior space.
Moreover, since an interior goods can be attached to the steel pipe group connected along the perpendicular direction, even if it is a heavy interior goods, it can support stably. At this time, since the substantially vertical arrangement of the steel pipe group is maintained by applying an appropriate tension to the guide wire passing through the through hole of the steel pipe, the steel pipe group is not affected even when there is a load acting in the horizontal direction. It is possible to stably support interior parts without shifting. Furthermore, if each steel pipe is a sufficiently short member, it can have a structure in which a bending moment due to the attachment of an interior product is difficult to act, and the load transmission structure can be reduced in weight.

In some embodiments, the steel pipe group in which each guide wire is inserted is configured to transmit a gravity load by the at least one interior product to the support portion.
As described above, since the interior product is supported by the support portion mainly through the steel pipe group, it is possible to stably support a heavier interior product than the case where the interior product is supported by the guide wire. In addition, since the guide wire in this embodiment is mainly used for the purpose of maintaining a substantially vertical arrangement of the steel pipe group, a large load is hardly applied to the guide wire, and therefore an inexpensive wire that is not so strong is used. It can also be adopted.

In some embodiments, the at least one tower shell includes a plurality of tower shells that are connected to each other to form the tower, and each of the tower shells has an upper end portion and a lower end portion respectively adjacent to the adjacent tower shells. An upper flange and a lower flange are provided for connection, and each guide wire is stretched between the upper flange and the lower flange of each tower shell, and both ends of each guide wire are connected to each tower shell. Are fixed to a pair of first brackets respectively provided on the upper flange and the lower flange.
Usually, from the viewpoint of maintaining the joint strength between the tower shells, the flanges for connecting the tower shells forming the tower are often made with a higher strength using a member thicker than the other parts. Therefore, by providing a pair of first brackets to which both ends of the guide wire are fixed on the upper flange and the lower flange, respectively, the guide wire mounting portion on the tower side can have a structure that can sufficiently withstand the tension of the guide wire. it can.

In some embodiments, the support portion may be a first bracket provided on the lower flange.
As described above, since the lower flange of the tower shell is made of high strength, by providing a support portion on the lower flange, the load of the steel pipe group and the interior parts supported by the steel pipe can be reliably ensured by the support portion. Can receive.

In some embodiments, the steel pipe includes a tube portion and flange portions provided on both ends of the tube portion, and the ribs of adjacent steel tubes among the steel tube group through which each guide wire is inserted. You may comprise so that parts may contact | abut.
Thereby, it can prevent local deformation | transformation by the steel pipe in which the guide wire was penetrated having shifted | deviated to radial direction in the middle (abutting part of an adjacent steel pipe). Furthermore, since the contact area between the steel pipes increases, the load can be appropriately transmitted even if the positions of the steel pipes are slightly displaced in the radial direction.

In some embodiments, the battery pack further includes a second bracket for supporting the at least one interior product on at least one of the steel pipe groups, and the second bracket is provided at the lower end of at least one of the steel pipe groups. You may comprise so that it may be supported from below by a collar.
As a result, the second bracket to which the interior product is attached is supported from below by the collar of the steel pipe, so that the second bracket does not slide down below the collar, so if the steel pipe to which the interior product is attached is appropriately selected, the interior product Can be securely fixed at a desired position. Further, the load of the interior product can be smoothly transmitted downward in the vertical direction via the collar.

In some embodiments, the steel pipe may further include a displacement prevention unit that prevents displacement of the steel pipe in a horizontal plane.
As a result, it is possible to prevent a plurality of stacked steel pipes (steel pipe groups) from being displaced in the horizontal direction at the contact portions. Therefore, the load of the interior product can be reliably supported by a plurality of stacked steel pipes, and the interior product can be supported more stably.

In some embodiments, the displacement preventing portion may be configured to stretch the steel pipe directly or indirectly inward in the radial direction of the cylindrical member.
Thereby, it is possible to prevent the interior product from being displaced relative to the cylindrical member in the horizontal direction.

In some embodiments, further comprising a connecting member that connects the steel pipe groups in the same horizontal plane, through which the different guide wires are inserted,
The displacement prevention part is provided between the steel pipe group and the assembly of the connecting members in the same horizontal plane and the inner peripheral surface of the tower shell, and stretches the assembly inward in the radial direction of the tower shell. It may be configured as follows.
In this way, by providing a connecting member that connects the steel pipe groups in the same horizontal plane, the steel pipe group and the assembly of the connecting members are configured to be stretched inward in the radial direction of the tower shell by the displacement preventing portion. The number of blocking units can be reduced.

In some embodiments, the at least one guide wire is located at a vertex that is shared by two equilateral sides of a substantially isosceles triangle in the horizontal plane, and at each of the other two vertices. Including a second wire and a third wire, and the connecting member extends in a horizontal direction between a first steel pipe through which the first wire is inserted and a second steel pipe through which the second wire is inserted, and A first connecting member to which the first steel pipe and the second steel pipe are attached at both ends, and a pair of slits provided in the first connecting member along the extending direction of the first connecting member, each one end being engaged. And a pair of second connecting members that are rotatably attached to the third steel pipe through which the third wire is inserted, the first steel pipe, the second steel pipe, and the third steel pipe. Each of the steel pipes is formed by the displacement prevention part. It may be configured to be supported by the inner peripheral surface of serial tower shell.
Thus, if the second connecting member is rotated to increase the distance between the third steel pipe and the first connecting member, the first steel pipe and the second steel pipe attached to both ends of the first connecting member are within the tower shell. The third steel pipe pressed against the peripheral surface and attached to the other end of the second connecting member is also pressed against the inner peripheral surface of the tower shell. The displacement prevention portion stretches the first to third steel pipes radially inward against such a pressing force directed outward in the radial direction, so that the displacement of the first to third steel pipes in the horizontal plane is effective. Can be blocked.

In some embodiments, the second connecting member is attached to the second connecting member, and the turning force for rotating the second connecting member about the third steel pipe as a rotating shaft is applied to the second connecting member. For this purpose, it may further include a rotating power application unit.
Thus, the pressing force to the inner peripheral surface of the tower shell of the first steel pipe and the second steel pipe can be adjusted by providing the turning force applying portion that rotates the second connecting member with the third steel pipe as the rotation axis. it can. Therefore, even when the pressing force decreases during operation, the displacement of the interior product in the horizontal plane can be reliably prevented over a long period of time by adjusting the turning force applying portion.

In some embodiments, the connecting member includes a vertical plate portion arranged along a vertical plane and connected at both ends to the steel pipe, and a horizontal plate portion protruding in a horizontal direction from the vertical plate portion, The at least one interior product may be supported by the horizontal plate portion.
Thereby, it becomes possible to attach the connecting member firmly and easily to the steel pipe. That is, since the vertical plate portion of the connecting member constituting the connecting portion with the steel pipe is arranged along a vertical plane that coincides with the extending direction of the steel pipe, the contact area of the connecting member with respect to the steel pipe is increased and the connection strength is increased. It can be improved and can be easily installed. Furthermore, since the interior product is supported by the horizontal plate portion that protrudes in the horizontal direction from the vertical plate portion, the interior product can be easily attached to the connecting member.

In some embodiments, the at least one interior article may include a floor plate that is supported by the horizontal plate portion and forms a floor of the tower.
Thereby, the floor board which comprises a floor can be stably supported on the tower side.

In some embodiments, the load transmission structure further includes a tension pipe interposed between the steel pipe located at the uppermost stage of the steel pipe group and the first bracket provided on the upper flange. Have.
In this way, the function of the guide wire is impaired by interposing a stretch pipe between the first bracket provided on the upper flange and the steel pipe located at the uppermost stage. In addition, the substantially vertical arrangement of the steel pipe group can be maintained by the strut pipe.

According to at least one embodiment of the present invention, since the interior product is attached to the steel pipe provided in the tower interior space, the interior product can be supported on the tower side without directly welding the interior product to the tower shell. it can. Thereby, the fall of the fatigue strength category of the tower by attachment of interior goods can be prevented, and the weight of the tower can also be reduced. Moreover, since the steel pipe group continuously arranged along the vertical direction is arranged in the space in the tower, the interior product can be fixed at a desired position in the space in the tower by appropriately selecting a steel pipe to which the interior product is attached. .
Moreover, since an interior goods are attached to the steel pipe group provided along the perpendicular direction, even if it is a heavy interior goods, it can support stably. Furthermore, if each steel pipe is made a sufficiently short member, it can be made into the structure where a bending load cannot act easily and it cannot be easily deformed by a compressive load.

It is a figure which shows the outline of the whole structure of a wind power generator. It is a longitudinal cross-sectional view which shows one section of the tower in one Embodiment. (A) is a plan view showing an example of the configuration of the upper flange in the view taken along the line EE in FIG. 2, and (B) is a plan view showing an example of the configuration of the lower flange in the view taken along the line FF in FIG. FIG. (A) is an AA arrow view of FIG. 2, and (B) is a BB arrow view of FIG. It is a perspective view which shows the structural example of a short tube. (A) is a sectional side view showing a mounting state of the second bracket to the short pipe, and (B) is a sectional view taken along the line CC of (A). (A) is a top view which shows a connection member and its peripheral structure, (B) is the DD arrow line view of (A). (A) is a side view which shows the attachment state of a tension pipe, (B) is a front view which shows the attachment state of another tension pipe. It is a front view which shows the attachment state of another tension pipe.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. However, the dimensions, materials, shapes, relative arrangements, and the like of the components described below as the embodiments or shown in the drawings as the embodiments are not intended to limit the scope of the present invention. It is just an example.

FIG. 1 is a diagram showing an outline of the overall configuration of a wind turbine generator. FIG. 2 is a longitudinal sectional view showing one section of the tower in one embodiment. 3A is a plan view showing an example of the configuration of the upper flange as viewed from the direction of arrows EE in FIG. 2, and FIG. 3B is a diagram of the example of the configuration of the lower flange as seen from the direction of arrows FF in FIG. FIG. 4A is a view taken along the line AA in FIG. 2, and FIG. 4B is a view taken along the line BB in FIG.

As shown in FIG. 1, the wind turbine generator 1 includes a rotor 4 composed of blades 2 and a hub 3, a nacelle 5 that rotatably supports the rotor 4, and a tower 10 that supports the nacelle 5. The tower 10 is provided on a foundation 8 provided on the ocean or on the ground. In addition, although illustration is abbreviate | omitted, rotation of the rotor 4 is input into a generator from a main shaft (via a drive train as needed).

The tower 10 includes at least one cylindrical tower shell, but a plurality of tower shells may be connected in the vertical direction. For example, in FIG. 1, a steel monopole tower 10 is divided into a plurality of sections. Each section (cylindrical member 11) may be configured by connecting a plurality of tower shells in the vertical direction. In this specification, “cylinder” includes “hollow truncated cone” having different diameters at both ends. That is, the tower 10 may have a hollow truncated cone shape in which the diameter of the upper end portion is different from the diameter of the lower end portion. A plurality of tower shells may be connected by welding or the like to constitute a tower section (cylindrical member 11) composed of the tower shells.

A detailed configuration of one section will be described with reference to FIGS. 2 to 4. FIG.
As shown in FIG. 2, in one embodiment, a cylindrical member (section) 11 formed of a cylindrical tower shell is provided at a cylindrical portion 12, an upper flange 13 provided at the upper end of the cylindrical portion 12, and a lower end. And a lower flange 14. The upper flange 13 and the lower flange 14 are each provided so as to project inward in the radial direction of the cylindrical portion 12.
As shown in FIG. 3A, the upper flange 13 is formed with a plurality of bolt holes 13a arranged in the circumferential direction. The upper flange 13 is provided with a first bracket 16 so as to project inward in the radial direction of the cylindrical portion 12. Similarly, as shown in FIG. 3B, the lower flange 14 is also formed with a plurality of bolt holes 14a arranged in the circumferential direction. The first flange 17 is also provided on the lower flange 14 so as to project inward in the radial direction of the cylindrical portion 12. Details of the

first brackets

16 and 17 will be described later.
In the state where the lower flange 14 of the upper cylindrical member 11 and the upper flange 13 of the lower cylindrical member 11 are in contact with each other among the two cylindrical members 11 (see FIG. 1) adjacent in the vertical direction, The two cylindrical members 11 are fastened by bolts (not shown) inserted through 14a. Thus, a plurality of cylindrical members 11 are connected to form a single cylindrical tower 10. The cylindrical portion 12 of each cylindrical member 11 may be configured by connecting a plurality of cylindrical tower shells by welding or the like.

2 and 4, the tower 10 includes a load transmission structure 20 for attaching at least one interior product to the tower 10 side. Here, the interior goods are configured separately from the tower 10 and are arranged in the space inside the tower 10. For example, as interior items, a ladder 70 for lifting and lowering, a lifting device 72 (including a simple lifting device), a floor plate 74 that forms a floor for work and installation of electrical equipment, a cable fixing support (not shown), an electric cable And electrical equipment (not shown) such as a transformer.

Here, a specific configuration example of the load transmission structure 20 will be described.
In some embodiments, as shown in FIGS. 2-4, the load transfer structure 20 includes at least one guide wire 22 (22a-22c) extending along the vertical direction and a guide wire 22 (22a-22c). ) And a plurality of short tubes 24 (24a to 24c) continuously provided along the vertical direction, and at least a pair of

first brackets

16 and 17 provided on the

flanges

13 and 14 of the cylindrical member 11, respectively. Have. In addition, the short pipe 24 is comprised with the steel pipe, and the steel pipe group is comprised including the several short pipe 24 connected along the perpendicular direction.
In the present specification, “along the vertical direction” does not mean that it is completely parallel to the vertical direction.

The guide wire 22 extends into the space in the tower along the vertical direction, and is mainly used for the purpose of maintaining a substantially vertical arrangement of the short tubes 24. In this embodiment, since the guide wire 22 does not mainly support the gravity load of the interior product and the plurality of short tubes 24, the guide wire 22 is hardly subjected to a large load, and thus the strength is so large. An inexpensive guide wire 22 can also be used. For example, a wire rope obtained by twisting metal wires such as steel wires is used as the guide wire 22. Note that a material other than metal (for example, a resin wire rope) may be used for the guide wire 22, or a wire that is not twisted may be used.
In one embodiment, both ends of the guide wire 22 are fixed to a pair of

first brackets

16 and 17 provided on the upper flange 13 and the lower flange 14 of each cylindrical member 11. The

first brackets

16 and 17 are provided so that the positions of the upper flange 13 and the lower flange 14 in the circumferential direction substantially coincide with each other. Therefore, the guide wire 22 having both ends fixed to the pair of

first brackets

16 and 17 is disposed along the vertical direction. In addition, the

1st brackets

16 and 17 and the upper side flange 13 or the lower side flange 14 may be joined by welding, and may be integrally formed by forging etc. The guide wire 22 and the

first brackets

16 and 17 are connected to each other by, for example, forming a male screw at the end of the guide wire 22 and inserting the end of the guide wire 22 into a through hole provided in the

first bracket

16 and 17. It may be fixed by tightening with a nut.

The short tube 24 has a through hole 26 (see FIG. 5) through which the guide wire 22 is inserted. A plurality of short tubes 24 in which the guide wires 22 are inserted into the through holes 26 are stacked so as to be continuous in the vertical direction. The lowermost short tube 24 among the plurality of short tubes 24 is supported by the first bracket 17 which is a support portion. At this time, in the substantially vertical arrangement of the plurality of short tubes 24, an appropriate tension is applied to the guide wire 22 passing through the through hole 26 of the short tube 24 in addition to the frictional force on the contact surfaces of the two adjacent short tubes 24. Since it maintains by giving, even if it is a case where the load which acts on a horizontal direction exists, an interior goods can be supported stably. Further, by providing a pair of

first brackets

16 and 17 to which the both ends of the guide wire 22 are fixed to the upper flange 13 and the lower flange 14, respectively, the wire mounting portion on the tower 10 side is sufficiently sufficient for the tension of the guide wire 22. The structure can withstand.

Further, at least one interior product is directly or indirectly attached to a predetermined short tube 24 among the plurality of short tubes 24. With such a configuration, a plurality of short tubes 24 through which the guide wires 22 are inserted allow a gravity load due to at least one interior product to be transmitted to the first bracket 17. Of course, the gravity load of the plurality of short tubes 24 is also supported by the first bracket 17. As described above, since the interior product is attached to the plurality of short pipes 24 that extend in the vertical direction, even a heavy interior product can be stably supported. Further, if each short tube 24 is made of a sufficiently short member, it can have a structure in which a bending moment due to the attachment of the interior product is difficult to act, and the gravity load of the short tube 24 positioned above and the gravity of the interior product A structure that is not easily deformed even when a compressive load such as a load is applied can be provided. Furthermore, since the lower flange 14 of the cylindrical member 11 is usually made with high strength, by providing a support portion for the short pipe 24 on the lower flange 14, a plurality of short pipes 24 and short pipes 24 are provided. The lower flange 14 can reliably receive the gravity load of the supported interior product.

FIG. 5 is a perspective view showing a configuration example of the load support member. FIG. 6A is a side cross-sectional view showing a state where the second bracket is attached to the short pipe, and FIG. 6B is a cross-sectional view taken along the line CC in FIG.
In one embodiment, as shown in FIG. 5, the short pipe 24 is formed in a cylindrical portion 25, a through hole 26 formed along the axial center of the cylindrical portion 25, and an upper end portion and a lower end portion of the cylindrical portion 25, respectively. And provided

flange portions

27 and 28. The plurality of short tubes 24 are arranged along the vertical direction so that the lower collar portion 28 and the upper collar portion 27 of two short tubes 24 adjacent to each other in the vertical direction are in contact with each other. The guide wire 22 is inserted into the through hole 26. By adopting such a configuration, it is possible to prevent local deformation of the plurality of short tubes 24 through which the guide wires 22 are inserted due to a shift in the radial direction. Furthermore, since the contact area between the short tubes 24 is increased by the

collar portions

27 and 28, the load can be appropriately transmitted even if the position of the short tube 24 is slightly shifted in the radial direction.

As shown in FIGS. 6A and 6B, the load transmission structure 20 further includes a second bracket 30 for supporting at least one interior product on at least one of the plurality of short tubes 24. Also good. In one embodiment, the second bracket 30 includes a first plate member 31, a second plate member 32, and a bolt 33 that fastens the first plate member 31 and the second plate member 32. The first plate member 31 includes a sandwiching portion 31a bent along the outer peripheral surface of the short tube 24, a flat plate portion 31b provided on both sides of the sandwiching portion 31a, and a bolt hole 31c formed in the flat plate portion 31b. The The 2nd board | plate material 32 also has the same structure. Then, the

flat plate portions

31 b and 32 b are brought into contact with each other so that the short tube 24 is sandwiched between the sandwiching portion 31 a of the first plate member 31 and the sandwiching portion 32 a of the second plate member 32, and the first plate member is secured by the bolt 33. 31 and the 2nd board | plate material 32 are fastened. Thus, the second bracket 30 is attached to the short tube 24. The second bracket 30 is supported from below by a flange 28 at the lower end of the short tube 24. Thereby, since the 2nd bracket 30 to which the interior goods were attached is supported from the downward direction by the collar 28 of the short tube 24, the 2nd bracket 30 does not slide down below the collar 28. Therefore, if the short pipe 24 to which the interior product is attached is appropriately selected, the interior product can be reliably fixed at a desired position. Further, the load of the interior product can be smoothly transmitted through the collar 28 downward in the vertical direction. Note that one of the flat plate portion 31b of the first plate member 31 and the flat plate portion 32b of the second plate member 32 may be formed in a long shape, and a connecting member 40 described later may be attached to the long portion.

FIG. 7A is a plan view showing the connecting member and its peripheral structure, and FIG. 7B is a view taken along line DD in FIG.
In one embodiment, as shown in FIGS. 4 (A), (B) and FIGS. 7 (A), (B), when a plurality of guide wires 22 are provided on the cylindrical member 11, the load transmission structure 20 is different. You may further have the connection member 40 which mutually connects the some short tube 24 in the same horizontal surface by which the guide wire 22 was penetrated.
For example, the connecting member 40 (40a, 40b) is a member assembled by welding a shape steel or steel plate such as an H-shaped steel, an L-shaped steel, or a grooved steel, and is arranged along a vertical plane and is connected to the short tube 24. A vertical plate portion 41 whose both ends are connected to each other, and a horizontal plate portion 42 protruding from the vertical plate portion 41 in the horizontal direction. The short pipe 24 is connected to the connecting member 40 via the second bracket 30 by fastening one end of the vertical plate portion 41 to the second bracket 30 with a bolt 45. Interior members such as a floor plate 74 can be attached to the connecting member 40 by bolting or welding. With such a configuration, it is easy to attach the interior product to the short pipe 24.

In one embodiment, as shown in Drawing 4 (B) and Drawing 7 (A), (B), load transmission structure 20 is a displacement prevention part 50 (50a) which prevents displacement in the level surface of short tube 24. To 50c). In that case, the displacement prevention unit 50 may be configured to stretch the short tube 24 directly or indirectly inward in the radial direction of the cylindrical member 11.
A specific configuration example of the load transmission structure 20 including the displacement prevention unit 50 will be described below.
The cylindrical member 11 is provided with a first wire 22a, a second wire 22b, and a third wire 22c positioned at the vertices of a substantially isosceles triangle in a plane. In addition, the 1st wire 22a is located in the vertex which two equal sides of a substantially isosceles triangle share. The first short tube 24a through which the first wire 22a is inserted and the second short tube 24b through which the second wire 22b is inserted are connected by the first connecting member 40a. The first connecting member 40a is provided with a pair of sliding portions 47 projecting in the horizontal direction. Each sliding portion 47 is formed with a slit 48 along the extending direction of the first connecting member 40a. A pair of second connecting members 40b are provided, one end of which engages with the slit 48 and the other end of which is rotatably attached to a third short tube 24c through which the third wire 22c is inserted. In addition, the 1st connection member 40a and the 2nd connection member 40b are extended in the same horizontal surface.

Each short tube 24 (24a to 24c) is pressed against the inner peripheral surface of the cylindrical member 11 indirectly via the displacement preventing portion 50 (50a to 50c).
A connecting member 40 is attached to the short pipe 24 via the second bracket 30. As described above, the second bracket 30 includes the first plate material 31 and the second plate material 32. When the displacement prevention part 50 is attached to the 1st board | plate material 31 side, in addition to the clamping part 31a and the flat plate part 31b, the 1st board | plate material 31 is a connection part with the displacement prevention part 50 extended from the clamping part 31a to a horizontal direction. 31d is included. On the other hand, the displacement prevention unit 50 includes a contact portion 51 that contacts the inner peripheral surface of the cylindrical member 11 and an arm portion 52 that extends inward in the radial direction of the cylindrical member 11 from the contact portion. And the connection part 31d of the 2nd bracket 30 and the edge part of the arm part 52 of the displacement prevention part 50 are connected rotatably by making the volt | bolt 55 into a rotating shaft. Thereby, the contact part 51 of the displacement prevention part 50 becomes rotatable with respect to the short tube 24, and even if the position of the short tube 24 changes, the contact part 51 of the displacement prevention part 50 is a cylindrical member. 11 abuts substantially parallel to the inner peripheral surface. Therefore, for example, when a pressing force directed radially outward is applied to the short tube 24 by a rotating force applying unit 60 described later, the displacement prevention unit 50 connected to the short tube 24 is connected to the inner periphery of the cylindrical member 11. The surface can be brought into surface contact, and the displacement of the interior product in the horizontal plane can be reliably prevented. In addition, the displacement prevention part 50 may contain the magnet, In that case, the short tube 24 can be fixed to the cylindrical member 11 by the magnetic force of the displacement prevention part 50.

Furthermore, the rotational force imparting part 60 may be attached to the second connecting member 40b. The turning force applying unit 60 applies turning force for rotating the second connecting member 40b about the third short tube 24c to the second connecting member 40b. For example, a retractable member such as a rigging screw or a turnbuckle is used as the rotational force applying unit 60.
If the distance between the 3rd short tube 24c and the 1st connection member 40a is enlarged by rotating the 2nd connection member 40b by the rotational force provision part 60, the 1st short tube attached to the both ends of the 1st connection member 40a will be explained. 24 a and the second short tube 24 b are pressed against the inner peripheral surface of the cylindrical member 11, and the third short tube 24 c attached to the other end of the second connecting member 40 b is similarly applied to the inner peripheral surface of the cylindrical member 11. Pressed. The displacement prevention unit 50 pushes the first to third short tubes 24a to 24c radially inward against the pressing force directed outward in the radial direction, so that the first to third short tubes 24a are supported. The displacement in the horizontal plane of ˜24c can be effectively prevented. Further, connecting

members

40a and 40b for connecting a plurality of short pipes 24a to 24c in the same horizontal plane are provided, and the assembly of the plurality of short pipes 24a to 24e and the connecting

members

40a and 40b is formed into a cylindrical member by a displacement preventing portion 50. 11 is configured to stretch inward in the radial direction, so that the number of the displacement prevention units 50 can be reduced.

As described above, according to the above-described embodiment, the interior product is attached to the short pipe 24 provided in the space in the tower, so that the interior product is installed on the tower 10 side without directly welding the interior product to the tower shell. The product can be supported. Thereby, the fall of the fatigue strength category of the tower 10 by attachment of interior goods can be prevented, Therefore Weight reduction of the tower 10 can also be aimed at. In addition, since a plurality of load transmission members are arranged so as to continue in the vertical direction in the tower interior space, the interior items can be fixed at a desired position in the tower space if an appropriate load transmission member is attached. can do.
In addition, since the interior product is attached to the plurality of short pipes 24 that are continuous in the vertical direction, even a heavy interior product can be stably supported. At this time, the substantially vertical arrangement of the plurality of short tubes 24 is maintained by the guide wire 22 that passes through the through hole 26 of the short tube 24 in addition to the frictional force on the contact surface between the short tubes 24. Even if there is a load acting in the horizontal direction by applying an appropriate tension to 22, a plurality of load transmission members can be stably supported without shifting. Furthermore, each short pipe 24 can be made into a structure in which a bending moment is unlikely to occur by making it an appropriate length, and the short pipe itself can be made compact.

The interior product is supported directly or indirectly by the second bracket 30.
When the interior product is directly supported by the second bracket 30, for example, one flat plate portion 31b (or 32b) of the second bracket 30 is used as the interior product by using the second bracket 30 extending from the short tube 24 to the interior product. Bolt fastening or hook engagement. The means for fixing the interior product and the second bracket 30 is not particularly limited.
When the interior product is indirectly supported by the second bracket 30, for example, the interior product is supported via another member such as the connecting member 40 attached to the second bracket 30.

For example, as shown in FIG. 2 and FIGS. 4A and 4B, a ladder 70 disposed in a substantially vertical direction within the cylindrical member 11 is short via a connecting member 40 at a plurality of substantially vertical positions. Attached to tube 24. Further, the lifting device 72 is provided with a guide for raising and lowering the car to the connecting member 40, and by engaging the hook on the lifting device side with the guide attached to the connecting member 40, the lifting device 72 has a short pipe. 24. Also in this case, as with the ladder 70, the guide is attached to the short tube 24 via the connecting member 40 at a plurality of substantially vertical positions. Further, the floor plate 74 is provided for each section partitioned by a plurality of connecting members 40 extending in the same horizontal plane. Each floor board 74 is connected to the adjacent connecting member 40 at a plurality of positions in the horizontal plane. Thereby, the floor board 74 is attached to the short pipe 24 via the connecting member 40.

In another embodiment, as shown in FIGS. 8A and 8B, a strut tube (strut) is provided between the first bracket 16 and the connecting member 40 that supports the uppermost floor plate 74 a in the cylindrical member 11. pipe) 29 may be interposed. In one embodiment, the tension tube 29 may be a steel tube (long tube) longer than the short tube 24. FIG. 8A is a side view showing the attached state of the tension tube, and FIG. 8B is a front view showing the attached state of another tension tube. The strut tube 29 has a length corresponding to the distance between the first bracket 16 and the connecting member 40 that supports the uppermost floor plate 74a. The lower end of the tension tube 29 is fixed to the connecting member 40 that supports the uppermost floor plate 74 a by a bolt 36. The upper end of the tension tube 29 is fixed to the lower surface of the first bracket 16 by a bolt 37 as shown in FIG. Further, the upper end of the tension tube 29 may be directly attached to the upper flange 13 of the cylindrical member 11 with a bolt 39 as shown in FIG. By adopting such a configuration, even when a failure occurs in the guide wire 22, the uppermost floor plate 74 a can be supported by the tension tube 29, and when a failure occurs in the tension tube 29. Even so, since the short tube 24 supports the strut tube 29, the reliability of the load transmission structure 20 can be further enhanced.

In another embodiment, as shown in FIG. 9, when the stretch tube 29 is interposed between the shortest tube 24 at the uppermost end and the first bracket 16, one of the stretch tube 29 or the first bracket 16 protrudes. The tension tube 29 is attached to the first bracket 16 by providing a portion and providing a concave portion on the other side and engaging the convex portion and the concave portion. As an example, by engaging the convex portion of the first bracket 16 (referred to here as the end portion of the first bracket 16) with a hole 29 a provided in the upper portion of the tension tube 29, The tension tube 29 is supported. As a result, the tension tube 29 can be easily attached to the first bracket 16, and even if a problem occurs in the tension tube 29, the short tube 24 supports the tension tube 29, so that the load transmission structure 20 Reliability can be further increased.

As mentioned above, although embodiment of this invention was described in detail, it cannot be overemphasized that this invention is not limited to this, In the range which does not deviate from the summary of this invention, various improvement and deformation | transformation may be performed.

For example, in the above-described embodiment, the short tube 24 with a collar is exemplified as the load transmission member. However, instead of the short tube 24 or in addition to the short tube 24, a plate-like member, a block-like member or the like is used as the load transmission member. Other shapes of members may be used. In that case, the upper and lower surfaces of the members are flat so that a plurality of members can be stacked along the vertical direction. Further, the through hole may not be provided on the axis of the member. For example, the through hole may be provided in a convex portion provided on the outer surface of the member.

DESCRIPTION OF SYMBOLS 1 Wind power generator 2 Blade 3 Hub 4 Rotor 5 Nacelle 8 Foundation 10 Tower 11 Cylindrical member 12 Cylindrical part 13 Upper flange 13a Bolt hole 14 Lower flange

14a Bolt hole

16, 17 1st bracket 20 Load transmission structure 22 Guide wire 22a First 1 wire 22b 2nd wire 22c 3rd wire 24 short tube 24a 1st short tube 24b 2nd short tube 24c 3rd short tube 25 cylinder part 26 through-

hole

27, 28 brim part 29 strut pipe 30 2nd bracket 31

1st plate material

31a,

32a clamping part

31b, 32b flat plate part
31c, 32c, 43 Bolt hole 31d Connecting portion 32

Second plate member

33, 37, 36, 39, 45 Bolt 40 Connecting member 40a First connecting member 40b Second connecting member 41 Vertical plate portion 42 Horizontal flat plate portion 47 Sliding portion 48

Slits

50, 50a, 50b, 50c Displacement prevention portion 51 Contact portion 52 Arm portion 55 Bolt 60 Power application portion 70 Ladder 72 Lifting device 74 Floor plate

Claims

A tower of a monopole wind power generator,
At least one tower shell having a cylindrical shape;
A load transmission structure for transmitting a support load of the tower interior to the tower shell;
The load transmission structure is
A steel pipe group consisting of a plurality of steel pipes arranged along the vertical direction;
A guide wire inserted through the plurality of steel pipes;
A support portion for supporting the steel pipe group to the tower shell, provided at an end of the steel pipe group;
The tower of the wind power generator, wherein at least one interior part of the tower is directly or indirectly attached to the steel pipe.
The tower of the wind power generator according to claim 1, wherein the steel pipe group into which each guide wire is inserted transmits a gravity load by the at least one interior product to the support portion.
The at least one tower shell includes a plurality of tower shells coupled together to form the tower;
An upper flange and a lower flange for connection with adjacent tower shells are provided at the upper end and lower end of each tower shell, respectively.
Each guide wire is stretched between the upper flange and the lower flange of each tower shell, and both ends of each guide wire are paired with the upper flange and the lower flange of each tower shell, respectively. The tower of the wind power generator according to claim 1 or 2, wherein the tower is fixed to the first bracket.
The tower of a wind turbine generator according to claim 3, wherein the support portion is a first bracket provided on the lower flange.
The steel pipe includes a tube portion and flange portions provided on both ends of the tube portion,
The wind turbine generator according to any one of claims 1 to 4, wherein the flange portions of adjacent steel pipes are in contact with each other among the steel pipe group in which each guide wire is inserted. Tower.
A second bracket for supporting the at least one interior article on at least one of the steel pipe groups;
The tower of a wind power generator according to claim 5, wherein the second bracket is supported from below by the flange of at least one lower end of the steel pipe group.
The tower of the wind power generator according to any one of claims 1 to 6, further comprising a displacement prevention unit that prevents displacement of the steel pipe in a horizontal plane.
The tower of the wind power generator according to claim 7, wherein the displacement prevention part is configured to stretch the steel pipe directly or indirectly inward in the radial direction of the tower shell.
A connecting member that connects the steel pipe groups in the same horizontal plane, through which the different guide wires are inserted,
The displacement prevention part is provided between the steel pipe group and the assembly of the connecting members in the same horizontal plane and the inner peripheral surface of the tower shell, and stretches the assembly inward in the radial direction of the tower shell. The tower of the wind power generator according to claim 8, wherein the tower is configured as described above.
The at least one guide wire includes a first wire located at a vertex shared by two equilateral sides of a substantially isosceles triangle in the horizontal plane, and a second wire and a third wire located at each of the other two vertices. Including
The connecting member is
A first steel pipe that extends in a horizontal direction between a first steel pipe through which the first wire is inserted and a second steel pipe through which the second wire is inserted, and the first steel pipe and the second steel pipe are attached to both ends. A connecting member;
One end of each of the slits provided in the first connecting member engages with a pair of slits along the extending direction of the first connecting member, and the third steel pipe into which the third wire is inserted is rotatable. A pair of second connecting members to which the other end portions are attached,
10. The wind turbine generator according to claim 9, wherein each of the first steel pipe, the second steel pipe, and the third steel pipe is supported on an inner peripheral surface of the tower shell by the displacement preventing portion. tower.
A turning force imparting portion that is attached to the second connecting member and that provides turning force to the second connecting member for turning the second connecting member around the third steel pipe as a turning shaft. The tower of the wind power generator according to claim 10, further comprising:
The connecting member includes a vertical plate portion disposed along a vertical plane and connected at both ends to the steel pipe, and a horizontal plate portion protruding in a horizontal direction from the vertical plate portion,
The tower of a wind turbine generator according to claim 9, wherein the at least one interior product is supported by the horizontal plate portion.
The tower of the wind power generator according to claim 12, wherein the at least one interior product includes a floor plate supported by the horizontal plate portion and constituting a floor of the tower.
The load transmission structure further includes a tension pipe interposed between the steel pipe located at the uppermost stage in the steel pipe group and the first bracket provided on the upper flange. Item 5. The tower of the wind turbine generator according to Item 3 or 4.