Basket for wind turbine, and wind turbine

Abstract

To solve the problems of prior arts, that is, to provide a basket for a wind turbine in which components are not joined together only by bolts, but are joined partially by surface joint, and a wind turbine using the basket.SOLUTION: A basket for a wind turbine basket of the present invention is a basket that constitutes a wind turbine, and comprises a top plate made of a thin plate material, a bottom plate made of the thin plate material, and a blade plate made of the thin plate material. At an upper joint part, the blade plate, which is arranged substantially perpendicularly to the top plate, and the top plate are bolted via an angle material and jointed with an adhesive. At a lower joint part, the blade plate, which is arranged substantially perpendicularly to the bottom plate, and the bottom plate are bolted via an angle material and jointed with an adhesive.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a small wind turbine that can be installed on a building or the like, and more specifically to a wind turbine basket that is mainly made of thin plate material, and a wind turbine that uses the same. [Background technology]

[0002] Although electricity consumption in Japan temporarily began to decline due to the impact of the global financial crisis in 2008, it has been increasing continuously since the oil shock of 1973, expanding 2.6-fold between fiscal 1973 and 2007. The reasons for this include the spread of so-called home appliances such as air conditioners and electric carpets as living standards improve, and the spread of office automation (OA) equipment and communication devices as the number of office buildings increases.

[0003] Until now, this enormous demand for electricity has mainly been met by power generation using so-called fossil fuels such as oil, coal, and natural gas. However, in recent years, attention has been focused on the depletion of fossil fuels and environmental issues associated with global warming, and power generation methods have gradually changed in response. As a result, according to statistics from the Federation of Electric Power Companies of Japan, while the annual amount of electricity generated by oil accounted for about 46% of the total around 1980, by 2010 this proportion had fallen to 9%. Instead, nuclear power generation has increased, accounting for just over 25% of the total (2010). Nuclear power generation has a significant effect on reducing greenhouse gas emissions compared to conventional power generation methods, and can provide electricity at low cost, making it a major contributor to Japan's electricity demand.

[0004] Furthermore, power generation methods using renewable energy sources have also come to be adopted because of their ability to reduce greenhouse gas emissions. Renewable energy is literally energy that can be reproduced, such as wind, solar, geothermal, small and medium-sized hydroelectric power, and woody biomass, and is seen as a promising form of low-carbon energy because it reduces greenhouse gas emissions and can be produced domestically.

[0005] Among renewable energies, wind power generation has the advantage of being particularly efficient in converting electrical energy. In general, the conversion efficiency of solar power generation is about 20%, woody biomass power generation is about 20%, and geothermal power generation is 10-20%, while wind power generation is said to be 20-40%, so it can convert energy into electricity more efficiently than other power generation methods. Another advantage of wind power generation is that, unlike solar power generation, it can generate electricity both day and night. Due to these characteristics, wind power generation is already widely used as a major power generation method in Europe, and in Japan, as part of its "energy mix" initiative, it aims to account for 1.7% of the power source mix by 2030.

[0006] Wind power generation can be broadly divided into onshore and offshore wind power generation depending on the location of installation. Onshore wind power generation is easier to install than offshore wind power generation, and therefore onshore wind power generation was the mainstream in the past, but in recent years, offshore wind power generation has also been actively promoted. In both onshore and offshore wind power generation, it was common to install relatively large-scale power generation facilities consisting of towers, nacelles, blades, etc. However, large-scale power generation facilities installed on land have been criticized for noise problems caused by extremely low and low frequencies, and there are also problems such as severe damage when towers fall over and difficulties in securing land, as well as the enormous cost of construction in the first place.

[0007] On the other hand, buildings called "Zeb (Net Zero Energy Building)" have been attracting attention in recent years, and efforts are accelerating to realize buildings that realize a comfortable indoor environment while achieving a zero balance of primary energy consumption in the building. Therefore, small-scale wind power generation equipment that can be installed on the rooftops of office buildings and apartment buildings, for example, has also come into use. In other words, small-scale wind power generation equipment installed in office buildings and the like is used to contribute to the energy balance. Various technologies related to small-scale wind power generation equipment have been proposed so far, and for example, Patent Document 1 proposes a wind turbine that uses blades with a unique shape. [Prior art documents] [Patent documents]

[0008] [Patent Document 1] JP 2005-16405 A Summary of the Invention [Problem to be solved by the invention]

[0009] In the case of wind power generation, in order to obtain a large amount of power, it is important to rotate the wind turbine as efficiently as possible, and therefore it is desirable to make the components that make up the wind turbine as light as possible. As shown by the wind turbine disclosed in Patent Document 1, which uses thin (1 mm) aluminum lumber, the components that make up the wind turbine are often thin-walled. For this reason, it is difficult to use welding to join the components, and bolt and nut joints, as in Patent Document 1, are the mainstream.

[0010] However, in the case of bolted joints, it is not possible to make a so-called surface joint, but rather the joint is made at each bolt point. Therefore, it is unavoidable that stress will concentrate at the bolt position, and the only way to reduce the stress concentration is to increase the number of bolts. However, increasing the number of bolts increases the weight accordingly, which means that it is not a desirable measure for reducing the weight of wind turbines.

[0011] The object of the present invention is to solve the problems associated with the prior art, namely to provide a wind turbine basket in which the components are not joined together solely by bolts, but are joined in part by surface joints, and a wind turbine using the same. [Means for solving the problem]

[0012] The present invention was made based on an unprecedented idea that focuses on joining components together using "angle members" made of angle iron and the like, and joining components together using a composite joint consisting of bolted joints and welded joints.

[0013] The wind turbine basket of the present invention is a basket that constitutes a wind turbine, and includes a top plate made of a thin plate material, a bottom plate similarly made of a thin plate material, and blades made of a thin plate material. The bottom plate is disposed substantially parallel (including parallel) to the top plate, and the blades are disposed between the top plate and the bottom plate. At the upper joint, the blades disposed substantially perpendicular (including perpendicular) to the top plate and the top plate are joined by a crest member, and similarly at the lower joint, the blades disposed substantially perpendicular (including perpendicular) to the bottom plate and the bottom plate are joined by a crest member. The crest member is a member having a first contact surface and a second contact surface substantially perpendicular (including perpendicular) to the first contact surface. At the upper joint, the first contact surface of the crest member is abutted against the top plate and the second contact surface is abutted against the blades, and the first contact surface and the top plate are bolted and adhesively joined, and the second contact surface and the blades are bolted and adhesively joined. Similarly, at the lower joint, the first abutment surface of the angled material abuts against the bottom plate and the second abutment surface abuts against the slat, and then the first abutment surface and the bottom plate are bolted and adhesively joined, and the second abutment surface and the slat are bolted and adhesively joined.

[0014] In the wind turbine basket of the present invention, the cross-sectional shape of the angled member that comes into contact with the curved portion of the slat can be curved to match the slat.

[0015] The wind turbine basket of the present invention may have a plurality of angled members arranged at intervals between the upper joint and the lower joint. In this case, the slats are partially straight and partially curved in plan view. The length of the angled members abutting the curved portions of the slats is shorter than the length of the angled members abutting the straight portions of the slats.

[0016] The wind turbine basket of the present invention may further include an intermediate plate made of a thin plate material, an upper intermediate joint, and a lower intermediate joint. In this case, the blade plate is composed of an upper blade plate and a lower blade plate, the upper blade plate is joined to the top plate at the upper joint, and the lower blade plate is joined to the bottom plate at the lower joint. At the upper intermediate joint, the upper blade plate and the intermediate plate, which are arranged substantially perpendicular (including perpendicular) to the intermediate plate, are joined by an angled member, and at the lower intermediate joint, the lower blade plate and the intermediate plate, which are arranged substantially perpendicular (including perpendicular) to the intermediate plate, are joined by an angled member. At the upper intermediate joint, the first abutment surface of the angled member is abutted against the intermediate plate and the second abutment surface is abutted against the upper blade plate, and the first abutment surface and the intermediate plate are bolted and adhesively joined, and the second abutment surface and the upper blade plate are bolted and adhesively joined. Similarly, at the lower intermediate joint, the first abutment surface of the angle-shaped material abuts against the intermediate plate and the second abutment surface abuts against the lower slat, and the first abutment surface and the intermediate plate are bolted and adhesively joined, and the second abutment surface and the lower slat are bolted and adhesively joined.

[0017] In the wind turbine basket of the present invention, the upper joint portion and the lower joint portion may be joined by a structural adhesive.

[0018] The wind turbine of the present invention comprises the wind turbine basket of the present invention, a top plate, and a shaft arranged approximately perpendicular (including perpendicular) to the top plate. The shaft and the top plate are joined by bolts and adhesive at the upper end of the shaft, and the shaft and the bottom plate are joined by bolts and adhesive at the lower end of the shaft. When the blades catch wind, the shaft rotates around its axis together with the wind turbine basket. Effect of the Invention

[0019] The wind turbine basket and the wind turbine of the present invention have the following advantages. (1) In addition to the bolted connections between the components, adhesive connections are made via angled bars, resulting in stronger connections than connections made only with bolts. (2) The joint is made by using angled material and adhesive, so the joint is a surface joint, which reduces stress concentration in the bolt area. (3) Since the joints are strong, it is possible to reduce the number of joints, thereby making it possible to reduce the overall weight. [Brief description of the drawings]

[0020] [Figure 1] FIG. 1 is a side view of a wind turbine according to the present invention. [Diagram 2] FIG. 1 is a perspective view showing a wind turbine basket according to the present invention. [Diagram 3] FIG. 4A is a perspective view showing a schematic diagram of a slat, and FIG. 4B is a plan view showing a schematic diagram of a slat. [Figure 4] A plan view of the top plate, bottom plate, and intermediate plate from above. [Diagram 5] 1A is a partial perspective view showing the "upper joint" joining the top plate and the slats, and FIG. 1B is a partial perspective view showing the "lower joint" joining the bottom plate and the slats. [Figure 6] FIG. 2A is a perspective view showing a typical angle-shaped material having a relatively short width dimension, and FIG. 2B is a perspective view showing a typical angle-shaped material having a relatively long width dimension. [Figure 7] FIG. 4 is a partial cross-sectional view showing a schematic view of a lower joint where the bottom plate and the slat plate are joined via an angle member. [Figure 8] A partial oblique view showing the "middle joint" where the upper and lower slats are joined. [Figure 9] FIG. 1 is a perspective view showing a shaft disposed between two lower slats joined to a base plate. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0021] The present invention relates to a "wind turbine" for wind power generation and a "wind turbine basket" constituting the wind turbine. An embodiment of the wind turbine basket and the wind turbine of the present invention will be described below with reference to the drawings.

[0022] 1.Overview Fig. 1 is a side view showing a wind turbine 100 of the present invention. As shown in this figure, the wind turbine 100 of the present invention is configured to include a wind turbine basket 200 and a shaft 300 of the present invention, and can also be configured to include a generator 400, a gearbox, a brake, etc. The wind turbine 100 can be of the Savonius type, for example, as shown in Fig. 1.

[0023] The shaft 300 has a structure that rotates around its axis, and the wind turbine basket 200 is attached to this shaft 300. For example, if the wind turbine 100 is installed so that the shaft 300 is in a substantially vertical (including vertical) direction, the shaft 300 will rotate around a substantially vertical (including vertical) axis. When the wind hits the shaft 300, the wind turbine basket 200 exerts a force (arrow in FIG. 1) that tends to rotate the shaft 300 together with the wind turbine basket 200, causing the shaft 300 to rotate (arrow in FIG. 1). The rotational force of the shaft 300 is then transmitted to the generator 400, and the generator 400 starts generating electricity.

[0024] The wind turbine 100 of the present invention can have a total height of about 2 to 3 m (e.g., about 2.6 m) and a total width in the longitudinal direction of 1 to 2 m (e.g., about 1.0 m), and can be constructed using materials with a small unit weight and thin plate materials. In other words, the wind turbine 100 of the present invention can generate electricity while being compact and lightweight.

[0025] 2. Windmill basket The wind turbine basket 200 of the present invention will be described. The wind turbine 100 of the present invention uses the wind turbine basket 200 of the present invention. Therefore, the wind turbine basket 200 of the present invention will be described first, and then the wind turbine 100 of the present invention will be described.

[0026] FIG. 2 is a perspective view showing a wind turbine basket 200 of the present invention. As shown in this figure, the wind turbine basket 200 of the present invention is configured to include a top plate 210, a bottom plate 220, a blade plate 230, an upper joint 250, and a lower joint 260, and may further include an intermediate plate 240 and an intermediate joint 270. However, the wind turbine basket 200 may be configured to include two or more blade plates 230. For example, in FIG. 2, two blade plates 230 are arranged to surround the shaft 300. The top plate 210, the bottom plate 220, and the intermediate plate 240 constituting the wind turbine basket 200 are arranged approximately parallel to each other (including parallel). On the other hand, the blade plate 230 is arranged between the top plate 210 and the bottom plate 220 and approximately perpendicular to the top plate 210 and the bottom plate 220 (including perpendicular). For example, when the top plate 210 is disposed in a horizontal position, the bottom plate 220 and the intermediate plate 240 are also disposed in a horizontal position, and the slat plate 230 is disposed in a vertical position. For convenience, unless otherwise specified, the following description will be given assuming that the top plate 210 is disposed in a horizontal position.

[0027] The top plate 210, bottom plate 220, middle plate 240, and wing plate 230 are thin plates made of lightweight (small unit weight) materials such as CFPR (Carbon Fiber Reinforced Plastics), GFPR (Glass Fiber Reinforced Plastics), aluminum, etc. Of course, in cases where the overall weight is to be significantly reduced, plates made of other materials such as steel or titanium can be used instead of CFPR.

[0028] The slat 230 can be formed as an integral piece without being divided into upper and lower parts, or can be formed by combining two or more members divided into upper and lower parts. For example, in FIG. 2, the slat 230 is formed by an upper slat 231 and a lower slat 232 which are divided into two parts, upper and lower. In this case, it is preferable to dispose an intermediate plate 240 between the upper slat 231 and the lower slat 232, and to provide an intermediate joint 270 for connecting the upper slat 231 and the lower slat 232. Furthermore, the slat 230 can be formed as an integral piece without being divided in the width direction, or can be formed by combining two or more members divided in the width direction.

[0029] 3 is a diagram showing a schematic of the slat 230, where (a) is a perspective view and (b) is a plan view seen from above. As shown in FIG. 3(a), the slat 230 is a plate material having the same cross-sectional shape continuing vertically, and as shown in FIG. 3(b), when viewed from above, it can have a shape combining straight lines and curved (arc) parts. When the slat 230 is divided into two, the upper and lower slats 231 and the lower slat 232 can also have the same shape as in FIG. 3. As described above, the slat 230 is a thin-walled plate material made of a lightweight material such as CFPR, and the thickness of the plate can be designed to be, for example, about 2.0 mm.

[0030] Fig. 4 is a plan view of top plate 210 as viewed from above. As shown in this figure, top plate 210 can have an external shape that combines straight lines and curved (arc) lines in a plan view, and a shaft hole 211 is provided in the center to allow shaft 300 to pass through. Note that bottom plate 220 and intermediate plate 240 can also be shaped as shown in Fig. 4, similar to top plate 210. As described above, top plate 210, bottom plate 220, and intermediate plate 240 are thin-walled plates made of a lightweight material such as CFPR, and their thickness may be designed to be about 2.0 mm, for example, similar to that of vane plate 230.

[0031] As also shown in Fig. 4, two blade plates 230 are arranged to surround the shaft 300, and the upper end of the blade plate 230 is joined to the top plate 210, and the lower end of the blade plate 230 is joined to the bottom plate 220. Fig. 5(a) is a partial perspective view showing an "upper joint 250" that joins the top plate 210 and the blade plate 230, and Fig. 5(b) is a partial perspective view showing a "lower joint 260" that joins the bottom plate 220 and the blade plate 230. As shown in this figure, the upper joint 250 and the lower joint 260 are formed by angle members 280.

[0032] FIG. 6 is a perspective view showing a typical angle member 280, where (a) shows an angle member 280 with a relatively short width dimension L, and (b) shows an angle member 280 with a relatively long width dimension L. As shown in this figure, the angle member 280 has a first contact surface 281 and a second contact surface 282, and these first contact surface 281 and second contact surface 282 are arranged so as to be perpendicular to each other, in other words, so that the second contact surface 282 is approximately perpendicular (including perpendicular) to the first contact surface 281. In addition, bolt holes 283 for inserting bolts are provided near the centers of the first contact surface 281 and the second contact surface 282. The angle member 280 can be manufactured using a lightweight material such as CFPR, like the top plate 210, bottom plate 220, and slat plate 230, or can be manufactured by processing (cutting) a conventionally used angle iron.

[0033] The upper joint 250 and the lower joint 260 can use angled materials 280 with a relatively short width dimension (hereinafter referred to as "short angled materials 280") as shown in Fig. 6(a), or can use angled materials 280 with a relatively long width dimension (hereinafter referred to as "long angled materials 280") as shown in Fig. 6(b). The short angled materials 280 are lighter than the long angled materials 280, while the long angled materials 280 make it easier to ensure surface joints than the short angled materials 280.

[0034] For example, when only short angle members 280 are used, it is advisable to arrange multiple angle members 280 at intervals to form upper joint 250 and lower joint 260. On the other hand, when only long angle members 280 are used, upper joint 250 and lower joint 260 can be formed by arranging one angle member 280, or upper joint 250 and lower joint 260 can be formed by arranging two or more angle members 280 at intervals.

[0035] Alternatively, short angle members 280 and long angle members 280 can be used in combination. For example, in FIG. 5, long angle members 280 are arranged on the straight portions of the slat 230, and short angle members 280 are arranged on the curved portions. By arranging short angle members 280 and long angle members 280 in combination in this way, the upper joint 250 and the lower joint 260 can be formed in a flexible manner to accommodate the complex shape of the slat 230. Of course, depending on the situation, short angle members 280 can be arranged on the straight portions and long angle members 280 can be arranged on the curved portions. It is preferable that the angle members 280 (short angle members 280 and long angle members 280) arranged on the curved portions of the slat 230 are processed to have the same curved shape as the curved shape (i.e., linear) of the slat 230 on which they are arranged. This increases the contact surface area between the angle member 280 (particularly the second contact surface 282) and the slat 230, which means that surface bonding can be more easily ensured.

[0036] 7 is a partial cross-sectional view showing a schematic diagram of the lower joint portion 260 where the bottom plate 220 and the slat 230 are joined via the angle member 280. Hereinafter, an example of a procedure for joining the bottom plate 220 and the slat 230 will be described with reference to this figure. First, the second abutment surface 282 (vertical surface in the figure) of the angle member 280 is abutted against the lower end side of the outer surface of the slat 230. At this time, since the adhesive GL is applied to the second abutment surface 282 (or the outer surface of the slat 230), the angle member 280 is adhesively joined to the slat 230. Then, the bolt BL is inserted into the bolt hole 283 of the second abutment surface 282, and the tip of the bolt BL is screwed into the nut NT on the inside of the slat 230 and tightened, whereby the angle member 280 is bolt-joined to the slat 230. Therefore, a small hole for inserting the bolt BL is provided at a predetermined position on the blade plate 230, and when the second abutment surface 282 is abutted against the blade plate 230, the angle-shaped material 280 is positioned after aligning the position of the bolt BL with the small hole.

[0037] When the angle material 280 is adhesively joined to the slat plate 230 and bolted, a first contact surface 281 (horizontal surface in the drawing) of the angle material 280 abuts against the upper surface of the bottom plate 220. At this time, since adhesive GL is applied to the first contact surface 281 (or the upper surface of the bottom plate 220), the angle material 280 is adhesively joined to the bottom plate 220. Then, the bolt BL is inserted into the bolt hole 283 of the first contact surface 281, and the tip of the bolt BL is screwed into the nut NT on the lower side of the bottom plate 220 and tightened, whereby the angle material 280 is bolted to the bottom plate 220. Therefore, a small hole for inserting the bolt BL is provided at a predetermined position of the bottom plate 220, and when the first contact surface 281 abuts against the bottom plate 220, the angle material 280 is positioned after aligning the position of the bolt BL with the small hole. Up to this point, we have explained the procedure for joining the angle-shaped material 280 and the slats 230, but depending on the situation, it is also possible to join the angle-shaped material 280 and the bottom plate 220 first, and then join the angle-shaped material 280 and the slats 230.

[0038] The procedure for joining the top plate 210 and the slats 230 via the angle member 280 is generally similar to the procedure described above, but an example will be described for completeness. First, the second contact surface 282 of the angle member 280 is brought into contact with the upper end side of the outer surface of the slats 230. At this time, since adhesive GL is applied to the second contact surface 282 (or the outer surface of the slats 230), the angle member 280 is adhesively joined to the slats 230. Then, a bolt BL is inserted into a bolt hole 283 of the second contact surface 282, and a nut NT on the inside of the slats 230 and the tip of the bolt BL are screwed together and tightened, whereby the angle member 280 is bolted to the slats 230. Therefore, a small hole for inserting the bolt BL is provided at a predetermined position on the blade plate 230, and when the second abutment surface 282 is abutted against the blade plate 230, the angle-shaped material 280 is positioned after aligning the position of the bolt BL with the small hole.

[0039] When the angle material 280 is adhesively joined to the slat plate 230 and bolted, a first contact surface 281 of the angle material 280 abuts against the lower surface of the top plate 210. At this time, since adhesive GL is applied to the first contact surface 281 (or the lower surface of the top plate 210), the angle material 280 is adhesively joined to the top plate 210. Then, the bolt BL is inserted into the bolt hole 283 of the first contact surface 281, and the tip of the bolt BL is screwed into the nut NT on the upper side of the top plate 210 and tightened, whereby the angle material 280 is bolted to the top plate 210. Therefore, a small hole for inserting the bolt BL is provided at a predetermined position of the top plate 210, and when the first contact surface 281 abuts against the top plate 210, the angle material 280 is positioned after aligning the position of the bolt BL with the small hole. Up to this point, we have explained the procedure for joining the angle-shaped material 280 and the slats 230 together, but depending on the situation, it is also possible to join the angle-shaped material 280 and the top plate 210 first, and then join the angle-shaped material 280 and the slats 230 together.

[0040] As described above, the slat 230 can be formed by the upper slat 231 and the lower slat 232. In this case, it is preferable to dispose the intermediate plate 240 between the upper slat 231 and the lower slat 232 and provide an intermediate joint 270 for connecting the upper slat 231 and the lower slat 232. FIG. 8 is a partial perspective view showing the "intermediate joint 270" for connecting the upper slat 231 and the lower slat 232. As shown in this figure, the intermediate joint 270 is composed of an "upper intermediate joint 271" for joining the upper slat 231 and the intermediate plate 240 and a "lower intermediate joint 272" for joining the lower slat 232 and the intermediate plate 240. That is, the upper slat 231 is joined to the top plate 210 by the upper joint 250 at its upper end side and is joined to the intermediate plate 240 by the upper intermediate joint 271 at its lower end side. Similarly, the lower slat 232 is joined at its lower end to the bottom plate 220 by a lower joint 260 , and is joined at its upper end to the intermediate plate 240 by a lower intermediate joint 272 .

[0041] The upper intermediate joint 271 and the lower intermediate joint 272 are formed of one or more angle members 280, similar to the upper joint 250 and the lower joint 260, and short angle members 280 or long angle members 280 can be appropriately and selectively used. In addition, the procedure for joining the upper slat 231 and the intermediate plate 240 via the angle member 280 and the procedure for joining the lower slat 232 and the intermediate plate 240 via the angle member 280 can be the same as the procedure for joining the top plate 210 and the bottom plate 220 and the procedure for joining the top plate 210 and the slat 230 described so far.

[0042] The adhesive GL used in the upper joint 250, the lower joint 260, and the middle joint 270 (the upper middle joint 271 and the lower middle joint 272) is preferably a “structural adhesive.” The structural adhesive used in the present invention will be described in detail below.

[0043] (Structural adhesives) Structural adhesives are defined in "JIS K 6800 Adhesive and Adhesive Terminology" as "reliable adhesives that can withstand heavy loads for long periods of time," and include acrylic adhesives, epoxy adhesives, urethane adhesives, silicone adhesives, modified silicone adhesives, phenolic adhesives, etc. When using a curing type of structural adhesive, any curing type, such as heat curing, UV curing, room temperature curing, or moisture curing, regardless of whether it is one-part or two-part, may be used, or multiple types may be combined. In particular, in order to avoid stress concentration at each joint (upper joint 250, lower joint 260, and intermediate joint 270) in the present invention, it is recommended that the structural adhesive contain an elastomer component. There are no particular limitations on the elastomer, but examples include synthetic rubber, natural rubber, liquid rubber, and thermoplastic elastomers based on styrene, olefin, urethane, polyester, polyamide, and PVC. These elastomers can be used alone, or two or more types can be used in combination as long as they are compatible.

[0044] (Surface treatment of adherends) In order to improve the adhesion at each joint of the present invention, it is preferable to pre-treat the surfaces of the adherends such as the top plate 210, bottom plate 220, middle plate 240, and vane plate 230. Examples of such surface treatment include mechanical treatments such as sandblasting and shot blasting, physical treatments such as ultraviolet irradiation, corona discharge, plasma treatment, and laser treatment, and chemical treatments such as acid and alkali, but are not limited to these, and various conventionally known treatment techniques can be used. Furthermore, in order to protect the surface of the adherend and improve adhesion, a primer treatment may be applied.

[0045] 3.Windmill Next, the wind turbine 100 of the present invention will be described. The wind turbine 100 of the present invention utilizes the wind turbine basket 200 of the present invention. Therefore, we will avoid overlapping explanations with those of the wind turbine basket 200 of the present invention, and will only explain the details unique to the wind turbine 100 of the present invention. In other words, the details not described here are the same as those explained in "2. Wind turbine basket".

[0046] The wind turbine 100 of the present invention is configured to include a wind turbine basket 200 and a shaft 300, and may further include a generator 400, a gearbox, a brake, etc. The shaft 300 is arranged vertically and rotates about a vertical axis, so that when wind strikes the wind turbine basket 200, the shaft 300 rotates together with the wind turbine basket 200. The rotational force of the shaft 300 is then transmitted to the generator 400, which starts generating electricity.

[0047] The wind turbine 100 can be manufactured generally by the following procedure. First, the two lower blade plates 232 are joined to the bottom plate 220. At this time, as already described, the lower blade plate 232 and the bottom plate 220 are joined by the lower joint 260. After the lower blade plate 232 and the bottom plate 220 are joined, as shown in FIG. 9, the shaft 300 is inserted into the shaft hole 211 of the bottom plate 220 and disposed between the two lower blade plates 232. A lower flange 320 having a larger diameter than the shaft hole 211 is provided at the lower end of the shaft 300, and the shaft 300 can be joined to the bottom plate 220 by using the lower flange 320. Specifically, the lower surface of the bottom plate 220 and the lower flange 320 can be joined by adhesive GL, and the bottom plate 220 and the lower flange 320 can be joined by sewing them together with bolts BL. In other words, the joint between the shaft 300 and the bottom plate 220 is a composite joint that combines adhesive bonding and bolt bonding, similar to the upper joint 250 and the lower joint 260. The adhesive GL used for adhesively bonding the bottom plate 220 and the lower flange 320 may be the same as the adhesive GL used for the upper joint 250 and the lower joint 260.

[0048] When the shaft 300 and the bottom plate 220 are joined, the two lower slats 232 are joined to the middle plate 240. At this time, the lower slats 232 and the middle plate 240 are joined by the lower middle joint 272, as already described. Next, the two upper slats 231 are disposed above the middle plate 240, and these upper slats 231 are joined to the middle plate 240. At this time, the upper slats 231 and the middle plate 240 are joined by the upper middle joint 271, as already described.

[0049] When the upper blade plate 231 and the intermediate plate 240 are joined, the shaft 300 is inserted into the shaft hole 211 of the top plate 210, and the top plate 210 is placed above the two upper blade plates 231. In addition, an upper flange 310 having a diameter larger than the shaft hole 211 is provided at the upper end of the shaft 300. Therefore, it is preferable to fix the upper flange 310 to the upper end of the shaft 300 after inserting the shaft 300 into the shaft hole 211 of the top plate 210. When the top plate 210 is placed above the upper blade plate 231, the two upper blade plates 231 are joined to the top plate 210. At this time, the upper joint 250 is joined to the top plate 210 as already described. When the upper blade plate 231 and the top plate 210 are joined, the shaft 300 is joined to the top plate 210 using the upper flange 310. Specifically, the upper surface of the top plate 210 and the upper flange 310 are joined with an adhesive GL, and the top plate 210 and the upper flange 310 are joined by sewing with bolts BL. In other words, the joint between the shaft 300 and the top plate 210 is a composite joint that combines adhesive joining and bolt joining, similar to the upper joint 250 and the lower joint 260. The adhesive GL used for adhesively joining the top plate 210 and the upper flange 310 may be the same as the adhesive GL used for the upper joint 250 and the lower joint 260.

[0050] Once the shaft 300 and top plate 210 are joined, a brake, a gearbox, a generator 400, etc. are attached to a part of the shaft 300 (for example, the lower end), and necessary wiring is performed, for example, connecting the wind turbine control panel and the generator 400 with wiring. [Industrial Applicability]

[0051] The wind turbine basket and wind turbine of the present invention can be used in a variety of buildings, including office buildings and apartment buildings. The present invention allows wind power generation facilities to be built in a variety of buildings at low cost, which is expected to provide a more positive motivation for wind power generation. Furthermore, considering the need to provide a stable supply of energy while reducing greenhouse gas emissions, the present invention can be said to be an invention that can be used not only industrially but also to make a significant contribution to society. [Explanation of symbols]

[0052] 100 Windmill of the present invention 200 Windmill basket of the present invention 210 (Windmill basket) top plate 211 (top plate, etc.) shaft hole 220 (Windmill basket) bottom plate 230 (Windmill basket) slats 231 Upper slat (of the slats) 232 Lower slat (of the slats) 240 (windmill basket) middle plate 250 (Windmill basket) upper joint 260 (Windmill basket) lower joint 270 (wind turbine basket) intermediate joint 271 Upper intermediate joint (of intermediate joints) 272 Lower intermediate joint (of intermediate joints) 280 (windmill basket) angle timber 281 (of angled material) first contact surface 282 (of angled material) second abutment surface 283 (Angle) Bolt Hole 300 (windmill) shaft 310 (Shaft) Top Flange 320 (Shaft) Lower Flange BL Bolt GL Adhesive NT Nut

Claims

1. A basket constituting a wind turbine, A top plate made of a thin plate material; A bottom plate arranged parallel or approximately parallel to the top plate and made of a thin plate material; A slat made of a thin plate material and disposed between the top plate and the bottom plate; an upper joint portion where the slats are arranged perpendicular or substantially perpendicular to the top plate and the top plate are joined by an angle member; The slats are arranged perpendicular or substantially perpendicular to the bottom plate, and the bottom plate is joined to a lower joint by the angle member. The angle member has a first abutment surface and a second abutment surface perpendicular or substantially perpendicular to the first abutment surface, At the upper joint, the first abutment surface of the angle member abuts against the top plate and the second abutment surface abuts against the slat plate, and the first abutment surface and the top plate are bolted and adhesively joined, and the second abutment surface and the slat plate are bolted and adhesively joined, In the lower joint, the first abutment surface of the angle member abuts against the bottom plate and the second abutment surface abuts against the slat plate, and the first abutment surface and the bottom plate are bolted and adhesively joined, and the second abutment surface and the slat plate are bolted and adhesively joined. A wind turbine basket comprising:

2. The slats are partially curved in plan view, The cross-sectional shape of the angle member that contacts the curved portion of the slat is the same curved shape as the curved shape of the slat at the arrangement position.

2. A wind turbine basket according to claim 1.

3. The slats are partially linear and partially curved in plan view, In the upper joint portion, a plurality of the angle members are arranged at intervals, In the lower joint, a plurality of the angle members are arranged at intervals, The length of the angle member that comes into contact with the curved portion of the slat is shorter than the length of the angle member that comes into contact with the linear portion of the slat.

2. A wind turbine basket according to claim 1.

4. The slats are composed of upper and lower slats, The upper slat is joined to the top plate at the upper joint, The lower slat is joined to the bottom plate at the lower joint, an intermediate plate between the top plate and the bottom plate, arranged parallel or substantially parallel to the top plate and the bottom plate, and made of a thin plate material; The upper slat is disposed perpendicular or substantially perpendicular to the intermediate plate, and the intermediate plate is joined to the upper intermediate joint by the angle member; The lower slat is disposed perpendicular or substantially perpendicular to the intermediate plate, and the intermediate plate is joined to the lower intermediate joint by the angle member. In the upper intermediate joint, the first abutment surface of the angle-shaped member abuts against the intermediate plate and the second abutment surface abuts against the upper slat, and the first abutment surface and the intermediate plate are bolted and adhesively joined, and the second abutment surface and the upper slat are bolted and adhesively joined, In the lower intermediate joint, the first abutment surface of the angle-shaped member abuts against the intermediate plate and the second abutment surface abuts against the lower slat, and the first abutment surface and the intermediate plate are bolted and adhesively joined, and the second abutment surface and the lower slat are bolted and adhesively joined.

2. A wind turbine basket according to claim 1.

5. At the upper joint, the top plate and the slats are joined by a structural adhesive; At the lower joint, the bottom plate and the slats are joined by a structural adhesive.

2. A wind turbine basket according to claim 1.

6. The wind turbine basket according to any one of claims 1 to 5, a top plate and a shaft disposed perpendicular or substantially perpendicular to the top plate; At the upper end of the shaft, the shaft and the top plate are bolted and adhesively joined; At the lower end of the shaft, the shaft and the bottom plate are bolted and adhesively joined together; When the blades receive wind, the shaft rotates around the axis together with the wind turbine basket. A wind turbine characterized by:

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