Method for installing snow-falling promoter

Abstract

To provide a method for installing a snow-falling promoter, which can save the labor of manufacturing it in advance, facilitates adjustment according to the shape of the upper part of a columnar structure, and does not require the structure of the columnar structure to be changed to a special structure.SOLUTION: A method for installing a snow-falling promoter 10 to prevent snow damage by attaching the snow-falling promoter 10 to a utility pole 1 erected outdoors is provided. The snow-falling promoter 10 is formed from a bendable silicone rubber sheet 11, a silicone gel laminated on the silicone rubber sheet 11 and capable of adhering to the upper end of the utility pole 1, and a bendable separator releasably laminated on the silicone gel. The sheet-shaped snow-falling promoter 10 is wound into a hollow, approximately conical shape with the silicone gel facing inward, the open lower part of the snow-falling promoter 10 is placed over the upper end of the utility pole 1, and the silicone gel of the snow-falling promoter 10 is adhered to the circumferential surface of the upper end of the utility pole 1.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a method for installing a snow-shedding promoter on a pole such as a utility pole to prevent snow damage. [Background technology]

[0002] In areas with heavy snowfall, snow accumulation on the tops of utility poles has traditionally grown into a crown-like shape, forming snow caps. These snow caps can grow into masses measuring, for example, 1.3 m wide, 2.4 m deep, and 0.8 m high. If left unattended, they can weigh more than 500 kg and damage the pole's cross arm or cause a break in high-voltage distribution lines. Furthermore, if portions of the snow cap melt due to sunlight and fall as large masses, they can cause damage on the ground. For example, if a large mass of snow cap collides with a vehicle traveling near a utility pole, it can dent the roof of the vehicle or crack the window glass. For this reason, in areas with heavy snowfall in winter, regular snow removal from utility poles is required (see Patent Documents 1, 2, and 3).

[0003] Conventional measures to prevent snow accumulation on utility poles (not shown) include (1) a method of covering and gluing a cap to the top of the utility pole to prevent snow accumulation and the expansion of the snow accumulation, (2) a method of arranging high-voltage distribution lines in a vertical wiring configuration to reduce the bonding of snow accumulation, reduce the area of ​​snow accumulation, and prevent the expansion of snow accumulation, and (3) a method of running the edge wiring under the cross arm of the utility pole to physically prevent contact with the cross arm. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Publication No. 2021-103936 [Patent Document 2] Japanese Patent Application Publication No. 2017-221068 [Patent Document 3] Japanese Patent Application Publication No. 08-086121 Summary of the Invention [Problem to be solved by the invention]

[0005] However, in the case of method (1), the cap must be pre-formed and manufactured before visiting the site, and it is not necessarily easy to adjust the cap to fit the shape of the top of the utility pole. Also, in the case of methods (2) and (3), although excellent effects can be obtained, the structure of the utility pole must be changed to a special, unconventional structure.

[0006] The present invention has been made in consideration of the above, and aims to provide a method for installing a snow-shedding promoter that can eliminate the need for pre-manufacturing, makes it easy to adjust according to the shape of the top of the pillar, and does not require the pillar structure to be changed to a special structure. [Means for solving the problem]

[0007] In order to solve the above problems, the present invention provides a method for installing a snow-shedding promoter to prevent snow damage by attaching the snow-shedding promoter to a columnar structure erected outdoors, comprising the steps of: The snow-shedding promoter includes a bendable silicone rubber sheet and an adhesive layer laminated on the silicone rubber sheet and capable of adhering to an upper portion of a columnar structure, The snow-falling promoter is formed into a hollow, approximately conical shape with the adhesive layer facing inward, the open lower part of the snow-falling promoter is placed over the upper part of the columnar structure, and the adhesive layer of the snow-falling promoter is stuck to the circumferential surface of the upper part of the columnar structure.

[0008] The snow-fall promoting device may include an adhesive layer laminated on one side of the silicone rubber sheet and capable of adhering to the top of the columnar structure, and a reinforcing resin film laminated and adhered to the other side of the silicone rubber sheet. The snow-shedding promoter preferably includes a bendable separator that is releasably laminated to the adhesive layer. It is also preferable that the adhesive layer is made of silicone gel and has a thickness of 1.0 mm or more and 2.0 mm or less.

[0009] Here, the term "pole-like structure erected outdoors" in the claims includes at least utility poles (power poles, telegraph poles, and common poles), sign poles, street light poles, surveillance camera poles, traffic light poles, traffic sign poles, railway overhead line poles, and steel pipe poles erected outdoors that are at risk of damage from falling snow. These pole-like structures may be of various columnar or cylindrical shapes. Furthermore, the term "approximately pyramidal" includes at least conical and polygonal pyramidal shapes.

[0010] The up, down, front, back, left and right directions of the method of installing the snow-shedding promoter according to the present invention are directions based on the drawings and can be changed as needed. Furthermore, although the subject of the present invention is a snow-shedding promoter, if the configuration of another use is the same as the configuration of the present invention and can be converted into a snow-shedding promoter, and if the function and effect of the present invention are achieved, the configuration of the other use falls within the technical scope of the present invention.

[0011] According to the present invention, when attaching a snow-shedding promoter to the top of an outdoor columnar structure, the sheet-type snow-shedding promoter is brought to the site where the columnar structure is installed, and this sheet-type snow-shedding promoter is formed into a hollow, approximately conical shape with the silicone rubber sheet exposed and the adhesive layer facing inward. Once the snow-shedding promoter has been formed into a hollow, approximately conical shape, the open lower part of the snow-shedding promoter is placed over the top of the columnar structure, and the adhesive layer on the inner surface of the snow-shedding promoter is adhered to the periphery of the top of the columnar structure, thereby attaching the snow-shedding promoter to the top of the columnar structure as a measure to prevent snow accumulation. [Effects of the Invention]

[0012] According to the present invention, there is no need to manufacture a standard shape of snow-shedding promoter before attaching it to the top of a columnar structure, and it has the effect of facilitating adjustment of the snow-shedding promoter according to the shape of the top of the columnar structure, etc. Also, it is possible to avoid the trouble of deliberately changing the structure of the columnar structure to a special structure as a measure to prevent snow accumulation.

[0013] According to the invention described in claim 2, the snow-fall promotion device includes a bendable separator that is releasably laminated to the adhesive layer, so that the adhesive force of the adhesive layer can be maintained until the snow-fall promotion device is processed into a hollow, approximately conical shape. [Brief explanation of the drawings]

[0014] [Figure 1] 1 is an overall explanatory diagram showing a schematic view of an embodiment of a method for installing a snow-fall promoting device according to the present invention. [Figure 2] FIG. 1 is a plan view explanatory diagram showing the shape of a snow-fall promoting device in an embodiment of the method of installing a snow-fall promoting device according to the present invention; (a) is a planar rectangular snow-fall promoting device, (b) is a planar, approximately fan-shaped snow-fall promoting device, and (c) is a planar, approximately house-shaped snow-fall promoting device. [Figure 3] 1 is a partial cross-sectional explanatory diagram schematically showing a snow-fall promoting device in an embodiment of a method for installing the snow-fall promoting device according to the present invention. [Figure 4] FIG. 2 is an overall explanatory diagram schematically illustrating a second embodiment of a method for installing a snow-fall promoting device according to the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0015] A preferred embodiment of the present invention will be described below with reference to the drawings. In this embodiment, as shown in Figures 1 to 3, a snow-fall promoter 10 is attached to the top of an outdoor utility pole 1. This snow-fall promoter 10 promotes snowfall and prevents the snow from thickening, thereby contributing to mitigating the impact of falling snow. This also contributes to achieving Goal 9 of the SDGs adopted at the United Nations Summit.

[0016] As shown in Figure 1, utility pole 1 is made of concrete, steel, or the like, and has a cylindrical shape with a length of 6 to 16 meters, with about one-sixth of it buried underground to maintain a stable posture. A transformer 2 and multiple cross arms 3 are attached at predetermined intervals along the top and bottom of utility pole 1, and the multiple cross arms 3 support high-voltage distribution lines 4, low-voltage distribution lines 5, overhead ground wires, etc.

[0017] As shown in Figures 1 to 3, snow-shedding promoter 10 consists of a flat sheet with a three-layer structure including a silicone rubber sheet 11 that will be exposed to snow 20 and wind and rain after installation, a silicone gel 12 that is laminated on one side of silicone rubber sheet 11 and can adhere to the circumferential surface of the upper end of utility pole 1, and a bendable separator 13 that is releasably laminated to silicone gel 12.When attached to the upper end of utility pole 1, it is wrapped and shaped into a hollow cone, in other words, a cap shape, taking into account the diameter of utility pole 1, and then placed over the upper end of utility pole 1 and adhered.

[0018] The snow-shedding promoter 10 is generally formed as a bendable flat rectangular sheet as shown in Fig. 2(a), but when it is desired to wrap it around a cone and make it easier to join both sides by overlapping them, it is formed as a flat, approximately fan-shaped sheet as shown in Fig. 2(b). Also, when it is desired to increase the adhesive area relative to the circumferential surface of the upper end of the utility pole 1, it is formed as a flat, approximately house-shaped sheet as shown in Fig. 2(c). This snow-shedding promoter 10 can be formed as a single sheet or a long, strip-shaped sheet as needed.

[0019] Silicone rubber sheet 11 is molded into a flexible, bendable gray sheet as shown in Fig. 3, and exhibits excellent cold resistance, durability, weather resistance, waterproofness, lubricity, non-corrosion, processability, workability, and environmental friendliness. From the perspective of improving formability and workability, the thickness of silicone rubber sheet 11, as measured with a predetermined measuring device, is preferably 0.8 mm to 1.5 mm, more preferably 0.9 mm to 1.5 mm, and even more preferably 1 mm to 1.5 mm.

[0020] The physical properties of the silicone rubber sheet 11 are as follows: a durometer A hardness of 60 or more and 80 or less, preferably 68 or more and 72 or less; a tear strength of 20 kN / m or more and 25 kN / m or less, preferably 21 kN / m or more and 23 kN / m or less, when measured in accordance with JIS K6253; a breakdown voltage of 25 kV or more, preferably 30 kV or more, when measured in accordance with JIS K6249; and a tensile strength of 5 MPa or more, preferably 8 MPa or more and 10 MPa or less, more preferably 8 MPa or more and 10 MPa or less, when measured in accordance with JIS K6253.

[0021] As shown in Figure 3, silicone gel 12 is formed as a gel-like sheet that has excellent affinity and adhesiveness with silicone rubber sheet 11. It is adhered to one side of silicone rubber sheet 11 without any gaps, and functions to firmly adhere to the circumferential surface of the upper end of utility pole 1. The thickness of this silicone gel 12 is preferably 1.0 mm to 2.0 mm, and more preferably 1.0 mm to 1.5 mm, from the viewpoint of obtaining excellent conformability when measured with a specified measuring device. The reason why the thickness of silicone gel 12 is 1.0 mm or more is because a thickness of less than 1.0 mm would result in a decrease in adhesive function depending on the material of utility pole 1. Furthermore, the hardness of silicone gel 12, as measured with an Asker CSR2, should be 20 or less, preferably 18 or less, and more preferably 15 or less.

[0022] As shown in the figure, the separator 13 is made of, for example, an inexpensive polyethylene resin film, which is easy to process, flexible, and versatile, and is laminated on the exposed surface of the silicone gel 12 until the snow-shedding promoter 10 is processed into a hollow cone shape, thereby ensuring the adhesive strength of the silicone gel 12. This separator 13 is preferably fluorine-treated to prevent contamination. The thickness of the separator 13 is not particularly limited, but is optimally, for example, between 30 μm and 500 μm, preferably between 30 μm and 100 μm, and more preferably between 30 μm and 50 μm, as measured with a specified measuring device.

[0023] Although there is no particular limitation on such snow-shedding promoter 10, for example, Shin-Etsu Patch Seal Series (product name manufactured by Shin-Etsu Chemical Co., Ltd.), Shin-Etsu Patch Seal HNS-200-P (product name manufactured by Shin-Etsu Chemical Co., Ltd.), and Shin-Etsu Patch Seal HNS-200 (product name manufactured by Shin-Etsu Chemical Co., Ltd.) are preferably used.

[0024] In the above configuration, when attaching snow-falling promoter 10 to the top end of utility pole 1 erected outdoors, first bring sheet-shaped snow-falling promoter 10 to the site where utility pole 1 is installed, peel off separator 13 of snow-falling promoter 10 to expose silicone gel 12, and wrap snow-falling promoter 10 into a hollow cone shape to expose silicone rubber sheet 11, with silicone gel 12 facing the inner circumferential surface. At this time, snow-falling promoter 10 may be wrapped around the outer circumferential surface of a color cone (registered trademark) used at construction sites, etc., to create a hollow cone shape.

[0025] Next, the open lower part of the snow-fall promoting device 10 is placed over the upper end of the utility pole 1, the silicone gel 12 on the inner surface of the snow-fall promoting device 10 is adhered to the periphery of the upper end of the utility pole 1, and the tapered upper end of the snow-fall promoting device 10 is directed vertically upward, and then left for a predetermined time (for example, 6 hours), whereby the snow-fall promoting device 10 can be attached to the upper end of the utility pole 1 as a measure to prevent snow accumulation.

[0026] In this case, if the required number of slits are formed around the periphery of the lower end of snow-falling promoter 10 by pinching or the like to improve the flexibility of the lower end of snow-falling promoter 10, silicone gel 12 at the lower end of snow-falling promoter 10 can be firmly adhered without gaps even if there are some irregularities formed on the periphery of the upper end of utility pole 1. Furthermore, if necessary, silicone gel 12 of snow-falling promoter 10 can be adhered to the periphery of the upper end of utility pole 1 using a primer to further strengthen the adhesion.

[0027] The snow-fall promoter 10 attached to the upper end of the utility pole 1 has a circumferential surface that slopes downward, so even if a large amount of snow 20 falls, it falls to the ground in a small amount of light, fresh snow before it thickens and forms a snow cap. Because the exposed surface of the silicone rubber sheet 11 that comes into contact with the snow 20 is slippery, the small amount of snow 20 falls smoothly to the ground, guided by the surface of the silicone rubber sheet 11, without accumulating. This prevents damage caused by heavy snow caps. Furthermore, because the snow 20 falls in small amounts, it does not accumulate in a flat, continuous pattern. Furthermore, the increased resistance caused by the snow 20 joining together can be prevented, ensuring smooth snowfall.

[0028] As a result of the above, there is no need to manufacture the snow-shedding accelerator 10 in a bulky, standard shape before visiting the construction site, and the lower opening of the snow-shedding accelerator 10 can be adjusted according to the shape of the upper end of the utility pole 1 while being attached. This also eliminates the need to modify the structure of the utility pole 1 to an unusual, special structure. Furthermore, because the snow-shedding accelerator 10 is hollow and lightweight, even if it falls, damage can be kept to a minimum.

[0029] Furthermore, the use of silicone gel 12 with excellent adhesiveness effectively prevents the snow-shedding promoter 10 from falling off in strong winds. This effect can be achieved by taking into account the following: wind speed 66 m / s x 10 minutes, wind speed 30 m / s x spray rate 2 L / mm per minute 2 In an experiment conducted under these conditions, it was confirmed that the snow-shedding promoter 10 was not blown away and fell. In addition, since the adhesive silicone gel 12 is used instead of adhesive, it is possible to reattach the silicone gel 12 if it becomes misaligned and sticks, and adhesive tape, etc. can also be omitted. Furthermore, since the silicone gel 12 is used instead of silicone rubber putty, there is no need to ensure that the silicone rubber putty has time to harden.

[0030] Next, Figure 4 shows a second embodiment of the present invention, in which a snow-fall promoter 10 is machined and fitted to the upper end of a support pole 7 of a traffic sign 6 erected on the side of the road, and this snow-fall promoter 10 promotes snowfall and prevents the accumulation of snow. The rest of the parts are the same as those in the above embodiment, so a description thereof will be omitted. In this embodiment, the same effects as those of the above embodiment can be expected, and moreover, there is no need to manufacture the snow-fall promoting device 10 in a standard shape before visiting the construction site, and the lower opening of the snow-fall promoting device 10 can be adjusted according to the shape of the upper end of the support 7 while it is attached.

[0031] The snow-falling promoter 10 in the above embodiment may be fitted over the top of a signboard pole, a streetlight pole, a surveillance camera pole, a traffic light pole, a railway overhead line pole, etc. A reinforcing resin film may be laminated and adhered to the surface of the silicone rubber sheet 11 of the snow-falling promoter 10 in the above embodiment to improve the strength of the snow-falling promoter 10, and a silicone gel 12 may be laminated and adhered to the back surface of the silicone rubber sheet 11.

[0032] The tapered upper end of the snow-shedding accelerator 10 may or may not be pointed. The silicone gel 12 may be an adhesive material other than silicone. The separator 13 may be made of various resin films or sheets other than polyethylene resin film, as needed. All of the technologies described in this specification may be subject to patent protection through amendments or divisional applications. [Industrial Applicability]

[0033] The method for installing a snow-shedding promoter according to the present invention is used in areas where there is a risk of damage from falling snow. [Explanation of symbols]

[0034] 1. Utility poles (pillar-shaped structures) 7 Pillar (column structure) 10 Snowfall promotion equipment 11 Silicone rubber sheet 12 Silicone gel (adhesive layer) 13 Separator 20 Snow

Claims

1. A method for installing a snow-shedding promoter to prevent snow damage by attaching the snow-shedding promoter to a columnar structure erected outdoors, The snow-shedding promoter includes a bendable silicone rubber sheet and an adhesive layer laminated on the silicone rubber sheet and capable of adhering to an upper portion of a columnar structure, This method of installing a snow-shedding promoter is characterized in that the snow-shedding promoter is formed into a hollow, approximately conical shape with the adhesive layer facing inward, the open lower part of the snow-shedding promoter is placed over the top of a columnar structure, and the adhesive layer of the snow-shedding promoter is adhered to the circumferential surface of the top of the columnar structure.

2. 2. The method for installing a snow-shedding promoter according to claim 1, wherein the snow-shedding promoter comprises a flexible separator releasably laminated on the adhesive layer.

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