JP6488497B1 - Reinforcement / re-flush structure of windproof snow fence and windproof snow fence - Google Patents

Abstract

An object of the present invention is to provide a highly effective windproof snow fence having a high degree of freedom in design and capable of easily reinforcing and replacing existing snow fences, and a highly effective windproof snow fence.
SOLUTION: The reinforcement / replacement structure of a windproof and snow fence according to the present invention comprises a plurality of joint parts, two fixed edges 20 and a net surface 10, and the net surface 10 is offset to the front side of two existing columns B1. It is characterized in that the net surface 10 can be stretched to the left and right by the screwing of the fastening member 32. The windproof snow fence of the present invention is characterized in that two adjacent fixed edges 20 are connected to both ends of a fastening member 32 of one joint portion. The joint member 31 of the present invention is characterized by including a holding portion 31a and two connection pieces 31b, and the two connection pieces 31b each have a plurality of bolt holes communicating both surfaces.
[Selected figure] Figure 4

Description

The present invention relates to a reinforcing-Chokawa structures and wind snow fences windbreak snow fences, particularly easily reinforced-Chokawa possible reinforcement-Chokawa structure existing snow fences high degree of freedom of design, and the wind snow effect about the high wind snow fences.

A windbreak / snow fence is a structure installed on the windward side of a road in a heavy snow area to prevent wind blowing on the road and blowing-up of flying snow.
Snow protection fences are installed in a fence separated from the road to deposit snowfall on the front and back of the fence, in a snowfall type where snowfall is blocked by a high fence and deposited on the windward side, converged winds in the lower part of the fence There is a blow-off type that blows off the snow on the road surface by letting it pass through the gap provided in.
Patent Documents 1 and 2 disclose a windproof snow protection fence in which a belt net is stretched between two columns by fixing members connected to the sides of the columns.
If the net of the windproof fence is damaged, or if the existing net can not provide a sufficient windproofing effect, it is necessary to replace it with a new net or a higher performance net.

JP, 2017-106284, A Unexamined-Japanese-Patent No. 2004-316403

In the prior art, there are the following problems associated with the network replacement operation.
<1> When switching to a different net from the standard, it is necessary to install a new fixing bolt at a position conforming to the net standard. This is an operation such as accurate positioning of the mounting position to the existing column at a high place, drilling and connection of a bolt, which makes the construction difficult and increases the construction cost.
<2> Since the support bolts for the existing nets projecting leftward and rightward from the pillars interfere with the new net, the new net can not be expanded unless it is cut.
<3> It is not possible to reinforce existing nets.

The prior art has the following problems regarding the structure of the windproof snow fence.
<1> Since the net is stretched between the adjacent columns, even if the net is structurally stretched maximally, a gap is generated between the net and the columns. For this reason, the area between the columns can not be utilized to the maximum, and wind and snow pass through the gap between the columns and the net, thereby impairing wind and snow protection performance (FIG. 6).
<2> Since the support is exposed between the nets against wind and snow, not only the replaceable net but also the support as a structural member is damaged by the wind and snow. Maintenance and replacement of the columns is not easy, which increases maintenance costs.
<3> Since the support pillars project to the front side from the expanded surface of the net, it is not possible to blow the wind snow blowing in the extending direction of the net along the net surface, and I will. For this reason, wind and snow protection performance is impaired.

The reinforcement / re-replacement structure of the windproof and snow fence according to the present invention for solving the above problems comprises a plurality of joint portions, two fixed edges and a net surface, and the joint portions have two joint members and a plurality of fastening members respectively. And the two joint members respectively have a holding portion and two connection pieces, the holding portion of the two joint members holds the existing support, the plurality of fastening members fastens and connects the two joint members, and the two fixings The edge is connected to the net surface, the fastening material on the front side of the existing support is connected to the fixed edge, the net surface is offset to the front side of the existing support, and the net surface is tensioned left and right by the fastening material.
According to this configuration, the existing snow protection fence can be reinforced and replaced with a high degree of freedom in design, a simple structure and a simple operation.

In the reinforcing / rebuilding structure of the windproof / snow fence of the present invention, the holding portion may have a U-shape in plan view.
According to this configuration, the joint portion can be reliably connected to the existing support of the square pole.

In the reinforcing / rebuilding structure of the windproof / snow fence of the present invention, the holding portion may have a U-shape in plan view.
According to this configuration, the joint portion can be reliably connected to the existing column of the column.

In the reinforcing and re-fusing structure of the windproof snow fence of the present invention, the joint portion may be provided with a rotation preventing means.
According to this configuration, it is possible to prevent the joint portion from horizontally rotating with respect to the existing support column.

The windproof snow fence according to the present invention is characterized in that the reinforcement / reconstruction structure of the windproof snow fence is connected to the left and right, and two fixed edges are connected to one joint portion.
According to this configuration, since the net surface can be expanded to a width equal to or greater than the distance between the columns, high wind and snow protection can be exhibited.

In the windproof snow fence of the present invention, the distance between the fixing edges may be smaller than the width of the existing support.
According to this configuration, high wind and snow protection performance can be exhibited by reducing wind and snow passing between the fixed edges at the front of the existing support.

The joint material of the windproof and snow fence according to the present invention includes a holding portion and two connection pieces, and the two connection pieces have a plurality of bolt holes, and are arranged in line symmetry on the left and right sides of the existing column to connect the connection pieces. By fastening with a bolt and a nut, the existing support can be held and fixed.
According to this configuration, it is possible to easily reinforce and replace the support without processing the support, although it has a simple structure.

The reinforcement / re-replacement structure of the windproof snow fence of the present invention has at least one of the following effects from the above configuration.
<1> It is possible to easily replace nets with different standards by a simple operation without the need for processing such as cutting of support bolts and perforation of support columns.
<2> Since the net surface is offset to the front side of the support, the existing net can be covered and reinforced from the front side.
Since the height of the <3> net surface can be freely adjusted, the design of the existing windproof snow fence can be changed from the blowout type to the windwash type or vice versa.

The windproof snow fence of the present invention has at least one of the following effects from the above configuration.
By offsetting the <1> net surface to the front side of the support, the net surface can be expanded with the largest area without being limited by the distance between the support.
<2> There is no gap through which the wind and snow can travel straight between the support and the net surface, and the wind and snow that has passed through the gap between the net surfaces can be decelerated by being received at the front of the support. Therefore, high wind and snow protection can be exhibited.
<3> A support net is covered and protected by a net surface offset to the front of the support, so that damage to the support due to wind and snow can be reduced.
<4> Since the pillars do not project to the front of the net surface, the path of wind and snow blowing along the net surface is good, and it is difficult to take in the wind and snow from the gap between the net surfaces.
<5> Since the net surface is offset to the front side of the support, there is a feeling of opening when seen from the downwind road, and it is difficult for passers-by to feel a sense of oppression caused by high fences.

The joint material of the present invention has at least one of the following effects from the above configuration.
<1> It can fix easily by simple operation | work, without processing to an existing support | pillar.
<2> A rational design that combines bolt holes for sandwiching support columns with mounting holes for net surface connection bolts can reduce the number of parts and significantly reduce the material cost of reinforcement and re-spin work.
<3> Since the mounting height can be set freely, the net surface can be kept horizontal even if there are height differences in the columns.

Explanatory drawing of the reinforcement * re-patching structure of the windproof snow fence which concerns on this invention. Explanatory drawing of the reinforcement * re-patching structure of the windproof snow fence which concerns on this invention. Explanatory drawing of a windproof snow fence. Explanatory drawing showing the relationship of a mounting space | interval and support | pillar width. Explanatory drawing of Example 2. FIG. Explanatory drawing of a prior art.

Hereinafter, the reinforcement of the wind snow fences of the present invention with reference to the accompanying drawings, Chokawa structure and with the wind snow fences will be explained in detail.
In the present invention, "longitudinal" and "upper and lower" are the vertical direction of the support, "horizontal" and "left and right" are the surface direction of the net surface, "front" is the windward side of the net surface, and "rear" is the leeward of the net surface. Means the side. In addition, "reinforcement" means extending the net surface on the front of the existing surface material, and "re-placing" means extending the net surface anew between the existing supports from which the existing surface material has been removed. .

[Reinforcement / Replacement structure]
<1> whole structure (FIGS. 1-3).
The reinforcing / rebuilding structure 1 of the present invention has a structure in which only the existing surface material B2 of the existing fence B, which has two existing columns B1 and one existing surface material B2 as one unit, is reinforced, or the existing fence B is reinforced. Structure.
In this example, the existing support B1 having the quadrangular post existing support B1 and the existing surface material B2 of the belt net, and connecting the existing surface material B2 to the existing support B1 by the support bolts B3 projecting left and right from the side of the existing support B1. An example in which the reinforcing / refilling structure 1 of the present invention is applied to the fence B will be described.
The reinforcing / rebuilding structure 1 constitutes one net surface 10, two fixed edges 20, and a plurality of joint portions 30 as one unit. In this example, two reinforcing and repositioning structures 1 are continuously attached on the upper and lower sides to two adjacent existing support posts B1.
The left and right edges of the net surface 10 are respectively connected to the fixing edge 20, and the fixing edge 20 is connected to the front connection piece 31b of the joint portion 30 attached to the existing support column B1 to front the net surface 10 from the existing support column B1. Expand to a position offset to the side.
In this example, an example in which the existing fence B and the reinforcing / rebuilding structure 1 are a snow-falling fence of a wind-blowing type will be described, but the present invention is not limited thereto. It may be

<2> Net surface.
The net surface 10 is a component that inhibits the passage of wind and snow.
In this example, a mesh sheet made of polyester fiber is employed as the net surface 10. However, the present invention is not limited to this, and other known materials such as polyethylene fiber and aramid fiber may be adopted as long as they have necessary strength against wind load and tension at the time of expansion. Also, the surface of the fiber may be coated with a resin.
Since the mesh size, aperture ratio, strength and the like of the net surface 10 are not the essence of the present invention, they are not described in detail here.

<3> Fixed edge.
The fixed edge 20 is a component that connects the net surface 10 to the joint 30 at the edge.
In this example, a combination of a long edge 21 connected to the side of the net surface 10 and a projection 22 projecting from the back of the edge 21 is adopted as the fixed edge 20. An extrusion-formed aluminum material is employed for the edge 21 and the butt 22.
The edge 21 sandwiches and fixes the side of the net surface 10 in a strip shape.
The tab portion 22 has a plurality of bolt holes through which the fastening member 32 can be passed left and right.

<4> Joint part (FIG. 2).
The joint part 30 is a component which connects the fixed edge 20 to the existing support column B1.
The joint portion 30 is attached to at least two upper and lower sides of one fixed edge 20.
The joint portion 30 has two joint members 31 and a plurality of fastening members 32.
The two joint members 31 are arranged in line symmetry on the left and right sides of the existing column B1, and the two joint members 31 sandwich the existing column B1 by fastening and connecting the two joint members 31 with each other. It can be fixed.
The reinforcing / rebuilding structure 1 of the present invention has a structure in which the existing support column B1 is sandwiched and fixed by the joint member 31. Therefore, the joint section 30 can be installed at any height of the existing support column B1.
For this reason, since the standard difference between the existing support column B1 and the net surface 10 can be absorbed, the degree of freedom in design is high. Further, interference between the joint portion 30 and the existing support bolt B3 can be avoided.

<4.1> Joint material.
The joint material 31 is a component that holds the existing support column B1.
The joint member 31 has a holding portion 31a having an inner surface shape corresponding to the outer shape of the existing support column B1, and two connection pieces 31b extending in the front-rear direction of the existing support column B1 from both ends of the holding unit 31a.
In this example, a steel material in which a holding portion 31a having a U-shape in a plan view and a connection piece 31b corresponding to the existing column B1 having a square pole shape is integrally configured as the joint material 31 is employed.
The connecting piece 31b is provided with one or more bolt holes penetrating both surfaces. In this example, upper and lower two bolt holes are provided in each connection piece 31b.
Since the joint material 31 has a structure in which the existing support column B1 is held and fixed, the joint material 31 can be easily fixed without the need to process the existing support column B1.
The two joint members 31 sandwiching the existing column B1 do not have to have the same dimensions, for example, even if the two joint materials 31 having different U-shaped inner surfaces are combined according to the width of the existing column B1. Good.
Moreover, the use of the joint material 31 can be utilized not only for reinforcement and re-replacement of the existing windproof and snow protection fence, but also in the construction of a new wind protection and snow protection fence.

<4.2> Fastening material.
The fastening member 32 is a component that connects the two joint members 31 and applies tension to the net surface 10.
The fastening member 32 is composed of a combination of a bolt 32a, a nut 32b, and a threaded rod 32c.
In this example, three bolts 32a, seven nuts 32b, and one threaded rod 23c are used for one joint portion 30.
Among them, two rear upper and lower bolts 32a are connected to the left and right in the rear connection piece 31b, and one nut 32b is fastened to each of them.
In the front connection piece 31b, one bolt 32a is communicated with the left and right in the lower part to fasten one nut 32b, and in the upper part, the screw rod 32c is communicated with the right and left and two nuts 32b are pinched from both sides .
The remaining two nuts 32b are screwed onto the threaded rod 32c in a state where the left and right ends of the threaded rod 32c are inserted into the bolt holes of the projecting portion 22, and the projecting portion 22 is pulled closer to the connection piece 31b and fixed (see FIG. 4).

<5> Net face tension function.
The reinforcing and re-building structure 1 of the present invention is characterized in that the fastening material 32 doubles as a tension function of the net surface 10.
The fixed edge 20 is pulled toward the connection piece 31 b by screwing the nut 32 b screwed to the outside of the flat portion 22 on the screw rod 32 c in the fastening direction to apply uniform tension to the entire net surface 10. Can be done (Figure 4).
At the same time, the attachment interval i of the left and right fixed edges 20 connected to one joint portion 30 can be adjusted.

[Windbreak snow fence]
<1> Overall configuration (FIG. 3).
The windproof snow fence A of the present invention is formed by connecting a plurality of reinforcing / rebuilding structures 1 in the surface direction of the net surface 10.
Specifically, both ends of the screw rod 32c on the front side of one joint portion 30 attached to the existing support column B1 are respectively inserted into the protruding portions 22 of the two adjacent fixing edges 20 and screwed in the nut 32b ( Figure 4).
Thereby, the plurality of net surfaces 10 can be continuously connected in the surface direction via the fixed edge 20 and the joint portion 30.

<2> Offset structure (FIG. 4).
The windproof snow fence A according to the present invention is characterized in that the joint surface 30 expands the net surface 10 at a position offset to the front side of the existing column B1.
With this structure, the width of the net surface 10 is not limited to the distance between the two existing supports B1. Therefore, the expansion area of the net surface 10 can be maximized, and high wind and snow protection performance can be exhibited.
In addition, since the existing columns B1 are not exposed on the front side of the net surface 10, the wind blowing along the net surface 10 is good, and it is difficult to take wind and snow into the gap between the net surfaces 10.

<3> Relationship between mounting interval and column width (Fig. 4).
In the windproof snow fence A of the present invention, it is desirable that the attachment distance i between the edge portions 21 of the fixed edge 20 be smaller than the column width w of the existing column B1.
In the conventional windproof snow fence, since the support bolt protruded to the side of the support and the side of the net surface are connected, a gap is generated between the support and the net surface. For this reason, wind and snow passed through the gap, and the wind and snow protection performance was impaired (FIG. 6).
On the other hand, the windproof snow fence A of the present invention is shielded by the front surface of the existing post B1 whose path between the edges 21 is orthogonal to it by setting the attachment distance i between the edges 21 smaller than the column width w. Ru.
With this structure, high wind and snow protection performance can be exhibited by receiving snow and wind having passed between the edge portions 21 on the front surface of the existing support post B1 to reduce power.

[Example in which the existing support is a cylinder]
In Example 1, although the existing support demonstrated the example of a square pole, it is not restricted to this. In this example, an example in which the reinforcing and re-building structure of the present invention is applied to a cylinder will be described (FIG. 5).
In this example, the holding portion 31 a of the joint member 31 has a U-shape in a plan view corresponding to a circular cylinder.
When the existing support column B1 is a cylinder, the joint surface 30 may rotate in the horizontal direction when the net surface 10 receives a wind pressure or the like. Then, you may provide the joint part 30 with the rotation prevention means 33 which prevents horizontal rotation by latching to the existing support column B1.
In this example, a plate material attached to the connection piece 31 b is adopted as the rotation preventing means 33.
The rotation preventing means 33 is attached to one of the plurality of joint portions 30 and the rotation of the joint portion 30 is prevented by bringing the rotation preventing means 33 into contact with the bar of the existing support column B1.
However, the rotation prevention means 33 is not limited to this, and may adopt, for example, a configuration in which the support bolt B3 of the existing support column B1 is sandwiched by two joint members 31.

DESCRIPTION OF SYMBOLS 1 Reinforcement / replacement structure 10 Net surface 20 Fixing edge 21 Edge 22 Sole portion 30 Joint portion 31 Joint member 31 a Clamping portion 31 b Connecting piece 32 Fastening member 32 a Bolt 32 b Nut 32 c Screw rod 33 Anti-rotation means A Windproof snow fence B Existing Fence B1 Existing column B2 Existing surface material B3 Support bolt i Mounting distance w Column width

Claims (6)

Reinforcement / re-replacement structure of a windproof snow fence having two existing columns,
The continuous direction of the two existing columns is defined as the left and right direction, the direction orthogonal to the left and right direction in plan view is defined as the front and back direction, and the side on which wind and snow act is the front.
It has multiple joints, two fixed edges and a net surface,
Each of the plurality of joint portions has two joint members and a plurality of fastening members,
Each of the two joint members has a holding portion having an inner surface shape corresponding to the outer shape of the existing support, and two connection pieces extending in the front-rear direction of the existing support from both ends of the holding portion,
The sandwiching portions of the two joint materials disposed line-symmetrically on the left and right sides of the existing column sandwich the existing column,
The plurality of fastening members connect and connect the front and rear connection pieces of the two joint members to each other in the left and right direction, and
The two fixed edges are connected to both sides of the net surface,
The fastening materials on the front side of the two existing columns are connected to the fixed edge, respectively, whereby the net surface is stretched to a position offset to the front side of the two existing columns,
By the screwing of the fastening member, the net surface is configured to be able to be tensioned to the left and right via the fixed edge,
Reinforcement and re-flush structure of windbreak and snow fence   The reinforcement / re-replacement structure of a windproof snow fence according to claim 1, wherein the existing support is a square pole, and the holding portion has a U-shape in a plan view.   The said anti-post is a column, The said holding part exhibits planar view U-shape, The reinforcement * re-separating structure of the windproof snow fence of Claim 1 characterized by the above-mentioned.   The anti-wind-and-snowfence fence protection / flush fence as set forth in claim 3, wherein the joint portion comprises rotation preventing means for preventing horizontal rotation of the joint portion by locking to the existing support column. It is a windproof snow fence which connects reinforcement / re-placement structure of the windproof snow fence of any one of Claim 1 thru | or 4 on right and left,
The two adjacent fixed edges are connected to both ends of one fastening member on the front side of one joint portion,
Windproof snow fence.   The windproof snow fence according to claim 5, wherein a distance between the two fixed edges connected to one joint portion is smaller than a width of the existing support column.

Images