Snow accumulation prevention device and snow accumulation prevention method

Abstract

It can be easily attached to structures with complex shapes, such as power transmission towers, and can prevent snow accumulation on the towers, as well as the resulting damage and collapse of the towers. [Solution] The snow accumulation prevention device 10 is a snow accumulation prevention device for a structure and comprises a main body 20, 50 having a conical or frustum shape in which the horizontal cross-sectional area increases from the top to the bottom, and a mounting part 30, 60 connected to the lower side of the main body and attachable to the structure. The main body comprises a hexagonal frustum shape and includes a plurality of connected aluminum plates, or a resin cone that forms a conical shape and a resin filler material filled inside the conical shape.

Description

Technical Field

[0001] The present disclosure relates to a snow adhesion prevention device and a snow adhesion prevention method.

Background Art

[0002] Conventionally, in heavy snow areas, damage and collapse of structures due to the weight of accumulated snow have been a problem. Particularly in transmission towers, since they have a great impact on social life, countermeasures are desired.

[0003] In contrast, Patent Document 1 discloses a technique of installing a crown snow prevention device having a roof member that covers an angle member constituting a transmission tower.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] However, in a transmission tower, a large number of long members such as angle members are complexly joined. For this reason, the crown snow prevention device in Patent Document 1 has a problem that it is difficult to attach to the connection part of the long members.

[0006] An object of the present disclosure is to be easily attachable to a structure having a complex shape such as a transmission tower, and to prevent snow adhesion to the tower and accompanying damage and collapse of the tower.

Means for Solving the Problems

[0007] To solve the above problems, a snow accumulation prevention device according to one aspect of the present disclosure is a snow accumulation prevention device for a structure, comprising: a main body having a conical or frustum shape in which the horizontal cross-sectional area increases from the top to the bottom; and a mounting part connected to the lower side of the main body and attachable to the structure. [Effects of the Invention]

[0008] According to this disclosure, it is possible to easily attach it to structures with complex shapes such as power transmission towers, and to prevent snow accumulation on the towers, and the resulting damage and collapse of the towers. [Brief explanation of the drawing]

[0009] [Figure 1] This is a schematic diagram of a power transmission tower to which the snow accumulation prevention device 10 according to this embodiment is applied. [Figure 2] Figure 1 is a plan view of a power transmission tower. [Figure 3] This is a perspective view showing the configuration of the snow accumulation prevention device 10 according to the first embodiment. [Figure 4] This is a detailed diagram showing the configuration of the snow accumulation prevention device 10 according to the first embodiment. [Figure 5] This is a detailed diagram showing the configuration of the main body 20 of the snow accumulation prevention device 10 according to the first embodiment. [Figure 6] This is a perspective view showing the configuration of the snow accumulation prevention device 40 according to the second embodiment. [Figure 7] This is a detailed diagram showing the configuration of the snow accumulation prevention device 40 according to the second embodiment. [Figure 8] This flowchart shows a snow accumulation prevention method using the snow accumulation prevention devices 10 and 40 according to this embodiment. [Modes for carrying out the invention]

[0010] The embodiments of this disclosure will be described below with reference to the drawings. In all the drawings illustrating the embodiments, common components are denoted by the same reference numerals, and repeated descriptions are omitted. The following embodiments are not intended to unduly limit the content of this disclosure as described in the claims. Not all components shown in the embodiments are necessarily essential components of this disclosure. Also, each drawing is a schematic diagram and is not necessarily a strict illustration.

[0011] Furthermore, in the following explanations, when describing similar elements without distinction, a reference code (or a common code among reference codes) may be used, and when describing similar elements with distinction, the element's identification number (or reference code) may be used.

[0012] <Overview> The snow accumulation prevention device according to this embodiment is a device installed at the connecting parts of long members (especially horizontal members) that make up a power transmission tower, in order to prevent snow accumulation on complex structures such as power transmission towers. The snow accumulation prevention device comprises a main body in the shape of a cone or truncated pyramid, in which the cross-sectional area in the horizontal direction increases from top to bottom, and a mounting part connected to the lower side of the main body and attachable to a structure. In the first embodiment, the main body is, for example, in the shape of a hexagonal truncated pyramid and includes a plurality of connected aluminum plates, and the mounting part includes, for example, a stackable spacer and a fixable band. In the second embodiment, the main body is, for example, in the shape of a cone and includes a resin material filled inside the cone shape, and the mounting part includes a mounting bracket consisting of a rod-shaped member and a flat plate member. This makes it possible to easily attach the device to complex structures such as power transmission towers, and prevents snow accumulation on the tower and the resulting damage and collapse of the tower.

[0013] <Overall Structure> The configuration of the snow accumulation prevention device 10 according to this embodiment will now be described. Figure 1 is a schematic diagram of a power transmission tower to which the snow accumulation prevention device 10 according to this embodiment is applied. Figure 2 shows a plan view of the power transmission tower in Figure 1. In this example, an example of the snow accumulation prevention device 10 being installed on a power transmission tower is shown, but this embodiment is not limited to this. The snow accumulation prevention device 10 according to this embodiment can be applied to all kinds of structures with complex configurations other than power transmission towers (for example, bridges, buildings, communication towers, etc.). The snow accumulation prevention device 10 is envisioned to be installed in places where snow tends to accumulate, such as the roof or eaves of a building, and the joints of beams.

[0014] As shown in Figure 1, a power transmission tower is constructed by, for example, a complex combination of multiple long members, and supports the power lines at the top via insulators. This power transmission tower is a structure in which steel members (for example, angle members or H-beams or other steel members) are combined three-dimensionally as long members by bolting and welding. Galvanized steel is mainly used as the material for the steel members. The power transmission tower includes diagonal members, main column members, and long members that serve as horizontal members. The snow accumulation prevention device 10 is mainly installed on the connection points of the horizontal members where snow tends to accumulate.

[0015] As shown in Figure 2, the horizontal members of a power transmission tower are arranged horizontally to the ground, for example. Each horizontal member extends in a first direction (e.g., vertical), a second direction perpendicular to the first direction (e.g., horizontal), or a third direction intersecting the first and second directions (e.g., diagonal), and is intricately joined together. These long members are prone to snow accumulation and the growth of ice and snow during the snowy season, especially in power transmission towers installed in mountainous areas or heavy snowfall regions. In particular, the joints between multiple long members are areas where snow accumulation repeatedly combines and grows, easily exceeding the load-bearing capacity of the horizontal members. Specifically, the joints of horizontal members located on the inside of the power transmission tower are areas where snow accumulation is likely to increase. The snow accumulation prevention device 10 according to this embodiment is installed at the joints between multiple long members (horizontal members) of such power transmission towers to efficiently prevent snow accumulation.

[0016] <First Embodiment> The configuration of the snow adhesion prevention device 10 according to the first embodiment will be described. The snow adhesion prevention device 10 according to the first embodiment includes, as a main body, a hexagonal frustum shape structure formed by joining a plurality of aluminum plates.

[0017] FIG. 3 is a perspective view showing the configuration of the snow adhesion prevention device 10 according to the first embodiment. FIG. 4 is a detailed view showing the configuration of the snow adhesion prevention device 10 according to the first embodiment. FIG. 5 is a detailed view showing the configuration of the main body 20 of the snow adhesion prevention device 10 according to the first embodiment. Specifically, FIG. 5(a) is a development view of the main body 20, FIG. 5(b) is a side view of the main body 20, FIG. 5(c) is a top view of the main body 20, and FIG. 5(d) is a bottom view of the main body 20.

[0018] As shown in FIG. 3, the snow adhesion prevention device 10 includes a main body 20 and three attachment portions 30.

[0019] The main body 20 has a hexagonal frustum shape with dimensions increasing from the top to the bottom. Here, the dimensions refer to, for example, the cross-sectional area in the horizontal direction of the hexagonal frustum shape. The main body 20 is not limited to the hexagonal frustum shape and may be a hexagonal pyramid shape with the upper part (apex) closed. The main body 20 is composed of a plurality (for example, six) of aluminum plates. As shown in FIG. 5(a), the six aluminum plates are each an isosceles trapezoid. On one of the equal sides of the aluminum plate, a connecting portion that can be connected to an adjacent aluminum plate is provided. The connecting portion has a plurality of holes and can accommodate screws or the like. On the other equal side of the aluminum plate, a plurality of holes are provided, and by inserting a screw corresponding to the holes in the connecting portion of the adjacent aluminum plate, the adjacent aluminum plates are connected. The connection of the aluminum plates is not limited to screws and may be, for example, an adhesive or the like. Thus, by combining and connecting the six aluminum plates, the main body 20 becomes a hexagonal frustum shape. Note that the aluminum plate may be an isosceles triangle, and in that case, by combining and connecting the six aluminum plates, the main body 20 becomes a hexagonal pyramid shape.

[0020] As shown in Figure 5(b), the main body 20 has an isosceles trapezoidal shape (or isosceles triangle) when viewed from the side. A water-repellent layer is provided on the outer side surface of the main body 20. The water-repellent layer may have a moth-eye structure with fine irregularities on its surface. The water-repellent layer may be a water-repellent film attached to the side surface of the main body 20, or a fluorine-based or silicone-based coating applied to the side surface of the main body 20. Alternatively, the water-repellent layer may be fine irregularities directly formed on the side surface of the main body 20 by anodizing. In particular, it is preferable that the water-repellent layer has a structure in which a film with a moth-eye structure is attached to its surface. This provides particularly excellent water repellency, and also facilitates the attachment and removal of the film, making the manufacturing and maintenance of the main body 20 easier.

[0021] As shown in Figure 5(c), the main body 20 is a regular hexagon when viewed from above. That is, the main body 20 has a truncated hexagonal pyramidal shape. This stabilizes the balance of the center of gravity of the main body 20 and prevents it from tipping over due to rain, wind, or snow. The main body 20 is open on the top side, but it does not have to be open. That is, the main body 20 may be a regular hexagonal pyramidal shape. As shown in Figure 5(d), when viewed from below, the bottom side of the main body 20 is completely open and the inside is hollow. The connecting parts are folded inward and connected. The main body 20 should have a diameter sufficient to adequately cover the connecting parts of the long material and a side angle sufficient to allow snow to slide off without accumulating on the sides. The main body 20 has dimensions such as a height of approximately 700-750 mm, a diagonal length of approximately 700-650 mm on the bottom surface, a diagonal length of approximately 30-40 mm on the top surface, and a thickness of approximately 2-5 mm. Furthermore, the angle between the base and equilateral sides of the main body 20, as viewed from the side, should preferably be approximately 65 to 70 degrees. This allows snow to slide off the sides of the main body 20 without accumulating.

[0022] As shown again in Figure 3, the main body 20 is mounted on the three mounting parts 30, and its lower side is connected to the three mounting parts 30. In this case, since the main body 20 uses the three mounting parts 30 as support points, it is desirable that the center of gravity (vertex) of the main body 20 be located in the center of the three mounting parts 30.

[0023] Each of the three mounting sections 30 is provided on a long member. Each of the three mounting sections 30 is provided near the connecting section (intersection) of multiple long members, and when viewed from above, is provided at the vertices of an equilateral triangle. If the long member is an angle member (L-shaped steel), the long member is arranged as an upward L-shape or a downward L-shape. Each of the three mounting sections 30 includes a spacer 31 and a band 32.

[0024] As shown in Figure 4, the spacer 31 includes multiple flat plate members that can be stacked (height adjustable) on a structure (in this case, the long members of a power transmission tower). The spacer 31 supports the main body 20 by resting it on top. Here, we show the case where the long members are arranged in an upward L shape, and the spacer 31 is provided on the surface that will be the lower surface of the L shape. On the other hand, when the long members are arranged in a downward L shape, the spacer 31 is provided on the surface that will be the upper surface of the L shape. The multiple flat plate members that make up the spacer 31 are made of a plastic material such as polypropylene. The multiple flat plate members (stacked spacer 31) are stacked so that they are higher than the height of the long members. That is, the uppermost surface of the flat plate members is higher than the uppermost surface of the long members. This prevents the main body 20, which is provided on the upper surface of the flat plate members, from interfering with the long members, and allows the main body 20 to be stably supported.

[0025] The band 32 connects the main body 20, the spacer 31, and the long material. Specifically, the band 32 is tightened to secure the long material, the spacer 31, and the main body 20 in that order from the bottom. At this time, a hole is provided on the lower side of the side of the main body 20 through which the band 32 is inserted. Multiple holes are provided on the side of the main body 20, for example, one on each aluminum plate. The band 32 is inserted through two holes in adjacent aluminum plates and tightened to secure the spacer 31 and the long material. The band 32 is, for example, a stainless steel band, but is not limited to this, and may be a metal band other than stainless steel, or a resin band, etc. Alternatively, a rope or wire may be used instead of the band 32. If the main body 20 is removed, the band 32 may be tightened to secure the spacer 31 and the long material. Furthermore, there may be two bands 32, one of which may secure the spacer 31 to the long material, and the other which may secure the main body 20 to the spacer 31 to the long material.

[0026] <Second Embodiment> The configuration of the snow accumulation prevention device 10 according to the second embodiment will now be described. The snow accumulation prevention device 40 according to the second embodiment includes a cone-shaped structure made of resin material as its main body.

[0027] Figure 6 is a perspective view showing the configuration of the snow accumulation prevention device 40 according to the second embodiment. Figure 7 is a detailed view showing the configuration of the snow accumulation prevention device 40 according to the second embodiment.

[0028] As shown in Figure 6, the snow accumulation prevention device 40 includes a main body 50 and three mounting parts 60.

[0029] The main body 50 has a conical shape in which the horizontal cross-sectional area increases from the top to the bottom. However, the main body 50 is not limited to a conical shape, and may also have a frustoconical shape with an open top. The main body 20 includes a resin material (resin cone 51) that constitutes the conical shape and a resin material (resin filler 52) that fills the inside of the conical shape. The resin cone 51 that constitutes the conical shape may be, for example, a material made of expanded polystyrene coated with urethane, or a material such as polyethylene. The resin filler 52 that fills the inside of the conical shape may be, for example, a urethane material. A water-repellent layer may also be provided on the outer side surface of the main body 50.

[0030] The main body 50 is mounted on three mounting parts 60, and its lower side is connected to the three mounting parts 60. In this case, since the main body 50 uses the three mounting parts 60 as support points, it is desirable that the center of gravity (vertex) of the main body 50 be located in the center of the three mounting parts 60.

[0031] Each of the three mounting sections 30 is provided on a long member. Each of the three mounting sections 30 is provided near the connecting section (intersection) of multiple long members, and when viewed from above, is provided at the vertices of an equilateral triangle. If the long member is an angle member (L-shaped steel), the long member is arranged as an upward L-shape or a downward L-shape. Each of the three mounting sections 60 includes a rod-shaped member 61 and a flat plate member 62. The rod-shaped member 61 and the flat plate member 62 are mounting brackets made of, for example, metal.

[0032] As shown in Figure 7, the rod-shaped member 61 is fixed to the structure (long member) at its lower end and inserted at its upper end into the resin filler 52 filled inside the main body 50. The rod-shaped member 61 is fixed so as to extend perpendicularly to the long member. The lower part of the rod-shaped member 61 is fixed by bolting, for example, by inserting it through a hole provided in the long member. Alternatively, if a hole cannot be made in the long member, the lower part of the rod-shaped member 61 may be bolted by inserting it through a hole in a fixing plate attached to the long member, for example. The upper part of the rod-shaped member 61 is inserted into a hole pre-made in the resin filler 52 filled inside the main body 50. The flat plate member 62 is fixed to the center of the rod-shaped member 61 in the longitudinal direction. The center may be any position between the lower and upper parts of the rod-shaped member 61. The flat plate member 62 supports the main body 50 at its upper end. That is, the upper surface of the flat plate member 62 and the lower surface of the main body 50 are in contact. Furthermore, the upper surface of the flat plate member 62 is higher than the uppermost surface of the long material. This prevents the main body 50, which is provided on the upper surface of the flat plate member 61, from interfering with the long material, and allows the main body 50 to be stably supported.

[0033] <How to prevent snow accumulation> A method for preventing snow accumulation using the snow accumulation prevention devices 10 and 40 according to this embodiment will be described. Figure 8 is a flowchart showing the method for preventing snow accumulation using the snow accumulation prevention devices 10 and 40 according to this embodiment.

[0034] First, the method for preventing snow accumulation using the snow accumulation prevention device 10 of the first embodiment will be described.

[0035] In step S11, the mounting portion 30 is attached to the structure. Specifically, as shown in Figure 4, at each of the three mounting portions 30, multiple flat plate members (spacers 31) are stacked on the long members of the power transmission tower structure. At this time, the uppermost surface of the stacked spacers 31 is adjusted to be higher than the uppermost surface of the long member. The stacked spacers 31 may be temporarily fixed to the long member using bands or the like.

[0036] In step S12, the main body 20 is connected to the mounting section 30. Specifically, the main body 20 is placed on top of the three spacers 31. The position of the main body 20 is adjusted so that its center of gravity is located in the center of the three spacers 31. Then, the main body 20, the spacers 31, and the long members are connected and fixed using the band 32. At this time, the band 32 is inserted through holes provided on the side of the main body 20 and tightened to fix it to the spacers 31 and the long members. Through this process, the hexagonal pyramidal or truncated hexagonal pyramidal main body 20 can be appropriately positioned in places prone to snow accumulation, such as the connection points of multiple long members of a power transmission tower, thereby preventing the expansion of ice and snow due to snow accumulation.

[0037] Next, a method for preventing snow accumulation using the snow accumulation prevention device 40 of the second embodiment will be described.

[0038] In step S11, the mounting portion 60 is attached to the structure (transmission tower). Specifically, as shown in Figure 7, the lower part of the rod-shaped member 51 is fixed to the long member of the transmission tower structure at the three mounting portions 50. The rod-shaped member 61 is, for example, bolted to the long member. In addition, the flat plate member 62 is inserted through the rod-shaped member 61 and fixed to the center of the rod-shaped member 61 in the longitudinal direction. At this time, the upper surface of the flat plate member 62 is positioned higher than the uppermost surface of the long member. The flat plate member 62 may be fixed to the center of the rod-shaped member 61 in the longitudinal direction beforehand.

[0039] Next, in step S12, the main body 50 is connected to the structure. Specifically, the upper parts of the three rod-shaped members 61 are inserted into holes (for example, holes of about 10 cm) that are pre-made or processed on-site in the bottom surface of the main body 50. At this time, the position of the main body 50 is adjusted so that the center of gravity of the main body 50 is located in the center of the three rod-shaped members 61. In this way, the main body 50 is connected to the mounting part 60 so that the flat plate member 62 supports the resin material filled inside the main body 50. Through this process, the cone-shaped or frustoconical main body 50 can be appropriately placed in places prone to snow accumulation, such as the connection points of multiple long members of a power transmission tower, thereby preventing the expansion of ice and snow due to snow accumulation.

[0040] <Variation> In this embodiment, the main body 20 is constructed by connecting multiple aluminum plates with screws or the like, but this embodiment is not limited to this. The main body 20 may also be constructed by connecting multiple aluminum plates to each other by providing hinges on their edges. This makes it possible to easily fold the main body 20. This folding mechanism makes it more compact for transport and storage, further improving the efficiency of delivery to the site and installation work.

[0041] Furthermore, in this embodiment, the water-repellent layer provided on the surface of the main body 20 may have a microstructure formed by, for example, plasma treatment or laser processing. In addition, various surface modification techniques can be applied to the water-repellent layer, such as a method of immobilizing water-repellent nanoparticles on the surface of the main body 20.

[0042] Furthermore, in this embodiment, the method of connecting and fixing each component may vary, such as clamping, bolting, or welding.

[0043] Furthermore, in this embodiment, the snow accumulation prevention device can be equipped with sensors for monitoring snow accumulation (e.g., weight sensors, temperature sensors, image sensors, etc.) and a communication module, and can be linked with a system that allows for remote monitoring of snow accumulation and remote instruction of countermeasures such as heating as needed. This can improve the operational efficiency of snow accumulation prevention measures.

[0044] <Summary>

[0045] As described above, the snow accumulation prevention device 10,40 of this embodiment comprises a main body 20,50 having a conical or frustum shape in which the horizontal cross-sectional area increases from the top to the bottom, and a mounting part 30,60 connected to the lower side of the main body and attachable to the structure. This makes it possible to easily attach it to structures with complex shapes such as power transmission towers, and prevents snow accumulation on the tower and the resulting damage and collapse of the tower.

[0046] Furthermore, the main body 20 of the snow accumulation prevention device 10 according to this embodiment has a truncated hexagonal shape and includes a plurality of connected aluminum plates. This makes it possible to provide a lightweight and robust snow accumulation prevention device 10.

[0047] Furthermore, the main body 20 of the snow accumulation prevention device 10 according to this embodiment can be made foldable. This improves transportability and ease of installation.

[0048] Furthermore, the mounting portion 30 of the snow accumulation prevention device 10 according to this embodiment includes a spacer 31 that can be stacked on a structure and supports the main body 20 at its upper part, and a band 32 that connects the main body 20, the spacer 31, and the structure. This allows the main body 20 to be stably installed and firmly fixed at a position higher than the uppermost surface of the long members of the steel tower.

[0049] Furthermore, the main body 40 of the snow accumulation prevention device 10 according to this embodiment includes a resin cone 51 that forms a conical shape and a resin filler 52 filled inside it. This makes it possible to achieve both high impact resistance due to the solid structure and a snow accumulation prevention function.

[0050] Furthermore, the mounting portion 50 of the snow accumulation prevention device 10 according to this embodiment includes a rod-shaped member 61 that is fixed to a structure at its lower end and inserted into a resin filler 52 at its upper end, and a flat plate member 62 that is inserted through the rod-shaped member 61, fixed to the longitudinal center of the rod-shaped member 61, and supports the main body 40 at its upper end. This allows the main body 40 to be easily and stably attached to a structure.

[0051] Furthermore, the main body 20 of the snow accumulation prevention device 10 according to this embodiment includes a water-repellent layer provided on its side. In addition, the water-repellent layer has a moth-eye structure. This provides an excellent snow accumulation prevention effect, making it difficult for snow to adhere to the surface of the main body.

[0052] Furthermore, the snow accumulation prevention device 10 according to this embodiment is a power transmission tower whose structure consists of multiple long members, and the mounting parts 30 and 60 can be attached to the connecting parts of the multiple long members. This prevents damage to the horizontal members of the power transmission tower due to snow accumulation and reduces repair costs.

[0053] While several embodiments of this disclosure have been described above, these embodiments can be implemented in a variety of other forms, and various omissions, substitutions, and modifications are permitted without departing from the spirit of the invention. These embodiments and their variations are included in the scope and spirit of the invention, as well as in the claims and their equivalents.

[0054] (Note) The details described in each of the above embodiments are noted below.

[0055] (Note 1) A snow accumulation prevention device for structures, A body having a conical or frustum shape in which the horizontal cross-sectional area increases from top to bottom, A mounting portion connected to the lower side of the main body and attachable to the structure, A snow accumulation prevention device equipped with the following features.

[0056] (Note 2) The main body has a truncated hexagonal shape and includes a plurality of connected aluminum plates. Snow accumulation prevention device as described in (Note 1).

[0057] (Note 3) The aforementioned main body has a foldable shape. Snow accumulation prevention device as described in (Note 2).

[0058] (Note 4) The aforementioned mounting portion is A spacer that can be stacked on the aforementioned structure and supports the main body at its upper part, A band connecting the main body, the spacer, and the structure, Snow accumulation prevention device as described in (Note 2).

[0059] (Note 5) The main body includes a resin cone forming a conical shape and a resin filler material filled inside the conical shape. Snow accumulation prevention device as described in (Note 1).

[0060] (Note 6) The aforementioned mounting portion is A rod-shaped member that is fixed to the structure at its lower end and inserted into the resin filler at its upper end, A flat plate member is inserted through the rod-shaped member, fixed to the central part of the rod-shaped member in the longitudinal direction, and supports the main body at its upper part, Snow accumulation prevention device as described in (Note 5).

[0061] (Note 7) The main body includes a water-repellent layer provided on the side, Snow accumulation prevention device as described in (Note 1).

[0062] (Note 8) The water-repellent layer has a moth-eye structure. Snow accumulation prevention device as described in (Appendix 7).

[0063] (Note 9) The structure is a power transmission tower made up of multiple long members. The mounting portion can be attached to the connecting portion of the plurality of long materials. Snow accumulation prevention device as described in (Note 1).

[0064] (Note 10) A method for preventing snow accumulation using a snow accumulation prevention device described in any of (Appendix 1) to (Appendix 9), The steps include attaching the mounting portion to the structure, The steps include connecting the main body to the structure, Snow accumulation prevention methods, including those mentioned above. [Explanation of symbols]

[0065] 10... Snow accretion prevention device 20...Main unit 30...Mounting part 31...Spacer 32 bands 40... Snow accretion prevention device 50...Main unit 51... Resin cone 52... Resin filler 60... Mounting part 61... Rod-shaped member 62... Flat plate member

Claims

1. A snow accumulation prevention device for structures, A body having a conical or frustum shape in which the horizontal cross-sectional area increases from the top to the bottom, A mounting portion connected to the lower side of the main body and attachable to the structure, Equipped with, The structure is a power transmission tower that includes multiple long horizontal members arranged horizontally to the ground. The mounting portion can be attached to the connecting portion of the plurality of horizontal members. Snow accretion prevention device.

2. The main body has a truncated hexagonal shape and includes a plurality of connected aluminum plates. The snow accumulation prevention device according to claim 1.

3. The aforementioned main body has a foldable shape. The snow accumulation prevention device according to claim 2.

4. The aforementioned mounting portion is A spacer that can be stacked on the aforementioned structure and supports the main body at its upper part, A band connecting the main body, the spacer, and the structure, A snow accumulation prevention device according to claim 2, including the feature described above.

5. The main body includes a resin cone forming a conical shape and a resin filler material filled inside the conical shape. The snow accumulation prevention device according to claim 1.

6. The aforementioned mounting portion is A rod-shaped member that is fixed to the structure at its lower end and inserted into the resin filler at its upper end, A flat plate member is inserted through the rod-shaped member, fixed to the central part of the rod-shaped member in the longitudinal direction, and supports the main body at its upper part, A snow accumulation prevention device according to claim 5, including the feature described above.

7. The main body includes a water-repellent layer provided on the side, The snow accumulation prevention device according to claim 1.

8. The water-repellent layer has a moth-eye structure. The snow accumulation prevention device according to claim 7.

9. A method for preventing snow accumulation using a snow accumulation prevention device according to any one of claims 1 to 8, The steps include attaching the mounting portion to the structure, The steps include connecting the main body to the structure, Snow accumulation prevention methods, including those mentioned above.

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