JP2016086773A - Entry prevention fence and grate fence - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an entry prevention fence with a grate fence which can be easily attached to transverse beams in plural states in a shape according to a gradient state of a road in a gradient section of the road, and to provide the grate fence.SOLUTION: An entry prevention fence 10 includes: plural support pillars 11, 11 driven into the ground at appropriate intervals along a road and erected generally perpendicularly; transverse beams 12, 12 in plural stages connecting the support pillars 11, 11 adjacent to each other at a generally same dimension distance from a ground face in a height direction; and a grate fence 20 fixed on the transverse beams 12, 12 in plural stages. The grate fence 20 includes: a grate attachment member extended along at least the two transverse beams 12, 12; a grate having plural grate rods long in a generally perpendicular direction, crossing the grate attachment member, and aligned in a transverse direction; and a clip attached to the grate attachment member rotatably at a crossing position of each grate rod and each grate attachment member and sandwiching and holding the grate rod.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a technology for providing an entry prevention fence for preventing an animal such as a bear, a deer or a small animal from entering a road or the like, and a lattice fence used for the entry prevention fence.

  In recent years, animals such as sika deer, red foxes, bears, and small animals have invaded highways and railway tracks. In order to prevent collisions between these animals and automobiles, entry prevention fences are installed along roads and the like. As the entry prevention fence, a lattice wire mesh made of horizontal wires and vertical wires is generally used. However, particularly in a slope section of a road, it is necessary to create a lattice wire mesh that matches the slope angle. Therefore, in order to deal with the slope section of the road, the lattice metal net shown in Patent Document 1 and Patent Document 2 has been developed.

  In Patent Document 1, the lattice wire mesh crosses a plurality of horizontal wires and a plurality of vertical wires. At that time, the intersecting angles of the plurality of horizontal wires and the plurality of vertical wires are arranged in accordance with the gradient of the place to be installed, and the intersecting portions of the horizontal wires and the vertical wires are fixed by welding.

  According to Patent Document 2, the metal mesh coupling bracket is “having two independent wire rod gripping portions, and connecting the bottom surfaces of these gripping portions by pin skewers so that the gripping portions can rotate freely without interfering with each other. It was stated. The lattice metal mesh is connected so that the intersecting point of the intersecting vertical line and horizontal line can be rotated by using the above-mentioned connecting metal fitting, and the angle at which the vertical line and horizontal line intersect can be freely changed.

Japanese Patent Laid-Open No. 7-150821 JP-A-9-184328

  In Patent Document 1, a plurality of horizontal wires and a plurality of vertical wires are arranged so as to cross each other at an angle that matches the gradient of the installation location, and the intersections are welded. Transport to the site. That is, it is necessary to manufacture a plurality of grid metal meshes in advance according to the road gradient condition, and there is a problem that a lot of labor is required. Moreover, when the road undulation changes are large, the angle of inclination varies widely, so it is necessary to produce many types of grids and calculate the number of them, and installation work that matches the gradient is required at the construction site. In addition, there is a drawback that it is difficult to shorten the construction period as a whole.

In Patent Document 2, since there are many intersections between vertical lines and horizontal lines in the production of a lattice metal mesh, the number of metal mesh couplings to be used increases. As a result, the cost and labor of producing the lattice wire mesh are required. Since the metal mesh coupling metal fittings are coupled so that they can be rotated by skewing the bottom surfaces of two independent wire rod gripping portions with pins, the metal mesh coupling metal hardware itself is not a simple configuration. As the number of intersections between the vertical lines and the horizontal lines of the grid wire mesh increases, the number of metal mesh connecting brackets used increases. Therefore, the cost is high in the production of the lattice wire mesh.
Furthermore, when a grid wire mesh composed of a plurality of horizontal wires and a plurality of vertical wires is installed on the entry prevention fence, there is a drawback that small animals can easily climb using a plurality of horizontal wires.

  The present invention has been made in view of such circumstances, and in particular, in a slope section of a road, a lattice fence that can be easily attached to a plurality of horizontal beams in a shape according to the slope situation of the road The purpose is to provide an entry prevention fence and a lattice fence using the.

  According to the first aspect of the present invention, a plurality of struts that are driven into the ground at appropriate intervals along the road and are erected in a substantially vertical direction, and the struts that are adjacent to each other are substantially the same distance from the ground in the height direction. A plurality of cross beams connected to each other, and a lattice fence fixed to the plurality of cross beams, the lattice fence being extended in at least two of the cross beams, and substantially vertically long A grid in which a plurality of grid bars intersect with each grid mounting member and are arranged in parallel in the lateral direction, and at each crossing position of each grid bar and each grid mounting member, rotatably mounted on the grid mounting member, And a clip for holding the lattice rod.

  According to a second aspect of the present invention, the clip can be inserted into a holding portion formed in a bifurcated shape or a ring shape capable of holding the lattice rod, and a through hole formed in the lattice attachment member, and can be removed. And a protruding portion for preventing.

  The invention according to claim 3 is characterized in that the clip has elasticity having a biasing force by which the bifurcated holding portion sandwiches the lattice rod.

  The invention according to claim 4 is characterized in that the lattice fence fixes the lattice attachment member to the transverse beam in a state where a plurality of lattice rods are sandwiched by the lattice attachment member with respect to the transverse beam.

  According to the fifth aspect of the present invention, a plurality of struts that are driven into the ground at appropriate intervals along the road and are erected in a substantially vertical direction, and the struts adjacent to each other, are approximately the same dimensional distance from the ground in the height direction. And a plurality of horizontal beams connected in the above-mentioned manner. A strip-shaped grid mounting member extending along at least two of the cross beams, a grid in which a plurality of grid bars that are long in a substantially vertical direction intersect the grid mounting members in parallel in the lateral direction, and the grid bars; And a clip that rotatably attaches to the lattice attachment member and holds the lattice rod at a position intersecting with each lattice attachment member.

  According to a sixth aspect of the present invention, the clip can be inserted into a holding portion formed in a bifurcated shape or a ring shape capable of holding the lattice rod, and a through hole formed in the lattice attachment member, and can be removed. And a protruding portion for preventing.

  The invention according to claim 7 is characterized in that the clip has elasticity having a biasing force by which the bifurcated holding portion sandwiches the lattice rod.

According to the entry prevention fence of the present invention, in the slope section of the road, the columns that are adjacent to each other form a step in the height direction, so that the multi-stage horizontal beam is inclined. At this time, since the grid fence is rotatable by the clips at the crossing positions of the plurality of grid bars and the grid mounting members, the grid mounting members are inclined with respect to the plurality of grid bars that are long in a substantially vertical direction. It is possible to change.
That is, the lattice fence can be fixed to a plurality of horizontal beams while being easily deformed into a parallelogram shape in accordance with the inclination angle of the horizontal beam with respect to the support column. Therefore, regardless of the slope section of the road, it is possible to easily cope with one kind of lattice fence, and it is possible to shorten the construction time required for installing the lattice fence, and the construction efficiency is improved. improves. In addition, since it is not necessary to produce various types of lattice fences as in the prior art, it is possible to shorten the work period and the delivery time.

  That is, the lattice fence of the present invention can be fixed to a plurality of horizontal beams while being easily deformed into a parallelogram shape adapted to the inclination angle of the horizontal beam installed on the support fence fence. Therefore, it is possible to easily cope with any kind of gradient section of the road with one kind of lattice fence, and the efficiency of attaching the lattice fence is improved. In addition, since it is not necessary to manufacture various types of lattice fences as in the prior art, it is possible to simultaneously shorten the work period and reduce the delivery time.

BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic explanatory block diagram which shows 1st embodiment of the entry prevention fence which concerns on this invention. (A) is a side view which shows the support | pillar of FIG. (B) is a side view which shows the front-end | tip part in the support | pillar of (a). (C) is a side view which shows the lower end part in the support | pillar of (a). It is a schematic explanatory plan view which shows the arrangement | positioning state of the cross beam with respect to the support | pillar of FIG. 1 shows one embodiment of a lattice fence according to the present invention and is a schematic explanatory configuration diagram. FIG. It is a perspective view which shows the mounting state of each member of a lattice fence. It is explanatory drawing of the lattice fence which shows the case where a strip | belt-shaped plate is made into 3 steps | paragraphs. It is a schematic perspective view which shows the relationship between the clip currently used for the strip | belt-shaped plate of the center part of the lattice fence in FIG. 5B, and a lattice rod. (A) is a schematic explanatory drawing which shows the shape of the lattice fence in the case of being flat without a road gradient. (B) is a schematic explanatory drawing which shows the shape of the lattice fence when there is a road gradient. It is a partial perspective view which shows the state which attached the lattice fence to the cross beam. It is a partial plane sectional view showing the state where the lattice fence was attached to the cross beam. It is a partial sectional side view which shows the state which attached the lattice fence to the cross beam. (A) is a partial side sectional view showing a state in which a lattice fence is attached to a cross beam. (B) is a partial perspective view of (a). FIG. 3 is a schematic explanatory view showing a second embodiment of the entry prevention fence according to the present invention. (A) is a schematic explanatory block diagram which shows the arrangement | positioning state of a horizontal beam with respect to the support | pillar of FIG. (B) is a side view which shows the support | pillar of FIG.

  Hereinafter, the entrance prevention fence which concerns on 1st embodiment of this invention is demonstrated with reference to drawings. FIG. 1 shows one embodiment of the entry prevention fence 10 of the present invention. In particular, the entry prevention fence in the slope section of the road is shown.

  As shown in FIG. 1, the entry prevention fence 10 is basically adjacent to each other with a plurality of support pillars 11, 11,... , And a plurality of horizontal beams 12, 12,... Connected between the supporting columns 11, 11, and a lattice fence 20 fixed to the plurality of horizontal beams 12, 12,.

  The lower end portion of the support column 11 is erected by being embedded in a foundation portion using a block or the like with a depth of about 200 mm in the ground. By installing a wire mesh having a small mesh (not shown) at the rising portion of the ground in the support 11, it becomes possible to prevent small animals from entering the ground. In this embodiment, the distance between the support | pillars 11 and 11 is about 1500 mm, and the height from the ground to the upper horizontal beam 12 is about 2500 mm.

  The entry prevention fence 10 is installed on both sides along the road. The road has undulations such as a flat part, an uphill, and a downhill. Since the plurality of columns 11, 11,... Are erected in a substantially vertical direction regardless of the angle of the road gradient, in the gradient section, as shown in FIG.・ Will be inclined almost parallel to the slope of the road.

  As shown in FIGS. 2 (a) and 2 (b), the column 11 supports the steel pipe pile foundation 11a by a concrete block foundation 13 and inserts wood such as todomatsu into the steel pipe pile foundation 11a. Is established. A mortar 11b is filled and fixed in a gap between the wood column 11 and the steel pipe pile foundation 11a.

  The cross beam 12 uses, for example, wood such as Todomatsu, and as shown in FIGS. 1, 2A and 3, between the columns 11 and 11 adjacent to each other, approximately the same dimension from the ground in the height direction. Connect by distance. In the present embodiment, the three-stage horizontal beams 12, 12, 12 are attached to the inside (the road side) of the column 11 in the section between the adjacent columns 11, 11. In the adjacent strut section, the three horizontal beams 12, 12, 12 are attached to the outside of the strut 11 (outside the road).

Further, in the adjacent strut section, the three-stage horizontal beams 12, 12, 12 are attached to the inside (the road side) of the strut 11. That is, as shown in FIG. 3, the horizontal beams 12, 12,... At each step are alternately attached to the inside and the outside of the columns 11, 11,.
In each of the horizontal beams 12, 12,..., The inner and outer lateral beams 12, 12,... Of the column 11 pass through the columns 11 as shown in FIGS. It is fixed with a connecting bolt 15. The cross beams 12, 12,... Have a semicircular cross section, and are fixed by placing the semicircular plane side against the column 11.

The lattice fence 20 is fixed to the plane side of the three-stage transverse beams 12, 12, 12 in order to block the above-mentioned column section. In the present embodiment, the lattice fence 20 includes a lattice attachment member 21 extending along the middle horizontal beam 12 and a lattice attachment member 21 extending along the lower horizontal beam 12 as shown in FIG. In the present embodiment, the 23 lattice rods 23, 23,... Extend in the substantially vertical direction so as to intersect the two lattice attachment members 21, 21 in parallel in the lateral direction. It has been. That is, a plurality of lattice bars 23, 23,.
The lattice rod 23 in the present embodiment is a round steel (steel wire) having a diameter of 6 mm, but the material and shape are not particularly limited, and for example, a polygonal steel wire can be used. In this case, there is an advantage that the rigidity is improved as compared with the round steel. Further, the intersection positions of the plurality of lattice rods 23, 23,... And the lattice attachment members 21, 21 are fixed by clips 24, 24,.

  As shown in FIG. 5A, the lattice attachment member 21 has through holes 21 a at intersections with the plurality of lattice rods 23, 23,. In the present embodiment, the lattice mounting member 21 is a stainless steel belt-like metal plate, but the material and shape are not particularly limited.

As shown in FIG. 5A, the clip 24 has a bifurcated holding portion 24a for holding the lattice rod 23, and a protruding portion 24b that can be inserted into the through hole 21a formed in the plate 21 and prevents removal. And. Therefore, the clip 24 is rotatably attached to the through hole 21a in a state where the protruding portion 24b is inserted into the through hole 21a of the plate 21.
In the present embodiment, the material of the clip 24 is AES resin, but is not particularly limited. For example, any material having a certain weather resistance, such as polyamide (nylon 6 or nylon 66), vinyl chloride, ABS resin, PP (polypropylene), FRP (carbon fiber plastic), aluminum, etc. can be used. It is possible to use.

  It is desirable that the bifurcated cross-sectional holding part 24a has a detachable elasticity (spring property) having an urging force that sandwiches the lattice rod 23 by forming the lattice rod 23 long to a position exceeding the outer semicircle. . The protrusion 24b includes a groove 24c that can be rotated in the through hole 21a of the plate 21, and a split groove 24d is formed on the tip surface. The split groove 24d allows the tip diameter to be bent so as to be inserted into the through hole 21a of the plate 21. In the present embodiment, four split grooves 24d are formed, but it may be a tri-slot groove or a five-slot groove, and is not particularly limited.

When the protrusion 24b of the clip 24 is pushed into the through hole 21a of the plate 21, the split groove 24d is bent and inserted into the through hole 21a. After passing through the through hole 21a, the projecting portion 24b returns to the original position, so that the clip 24 is rotatably mounted on the through hole 21a of the plate 21 as a whole. On the other hand, the lattice rod 23 is easily held by the holding portion 24a with its elastic biasing force by being pushed into the bifurcated portion of the holding portion 24a.
As described above, the lattice fence 20 according to the present embodiment can be established if the belt-like plate 21 extending along the cross beam 12 has at least two stages. That is, the number of plates 21 can be increased in accordance with the number of steps of the horizontal beam 12.

FIG. 5B is an explanatory configuration diagram of the lattice fence showing a case where the belt-like plate 21 has three stages, and FIG. 5C shows the clip 40 and the lattice rod 23 used for the belt-like plate 21 at the center of the lattice fence 20 in FIG. 5B. It is a schematic perspective view which shows these relationships.
In the lattice fence of FIG. 4 described above, the belt-like plate 21 has two stages, but in the lattice fence 20 shown in FIG. 5B, the belt-like plate 21 is added to the center to make three stages, and FIG. 5C shows. In the clip 40, the holding portion 24a in the above-described clip 24 is formed in a forked shape, but the holding portion 40a is formed in a ring shape.

That is, as shown in FIG. 5C, in the clip 40 attached to the middle portion, the holding portion 40a is formed in a ring shape, and the lattice rod 23 is inserted into the holding portion 40a. According to this, since the single lattice bar 23 is supported by the upper, middle, and lower three clips, the rigidity of the entire lattice bar 23 is improved, and the strength of the entire lattice fence 20 can be improved.
In addition, since the lattice rod 23 is inserted into the ring-shaped holding portion 40a in the middle stage, even if a force greater than expected occurs in the lattice rod 23, the lattice rod 23 is reliably held by the holding portion 40a. In addition to reducing the amount of deflection, it is possible to prevent unexpected situations such as the lattice rod 23 being pulled out of the clip due to the influence of snow.
The combination of the clips 24 and 40 can be appropriately selected in consideration of the installation location of the lattice fence 20 and the like. For example, when the strength is emphasized, it is desirable to select and use depending on the case, such as configuring the lattice fence 20 using only the clips 40, mixing the clips 24 and 40, or using only the clips 24.
In addition, since the other shape of the clip 40 is the same as that of the clip 24 mentioned above, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

Next, the operation when the entry prevention fence according to the present embodiment corresponds to the road gradient will be described.
When the road is flat without a road gradient, the grid fence 20 has two plates 21 and 21 that are substantially orthogonal to the plurality of grid bars 23, 23,... In the grid 22 as shown in FIG. Since it intersects, it becomes almost rectangular as a whole.
On the other hand, when there is a road gradient, the grid fence 20 is configured such that the two plates 21 and 21 have a plurality of grid bars 23, 23,... In the grid 22 as shown in FIG. Since they intersect so as to incline at the same angle as the gradient, the whole becomes a parallelogram.
That is, the lattice fence 20 can be rotated by the clips 24, 24,..., Since the intersection positions of the plurality of lattice bars 23, 23,. .. Can be easily deformed so that the plates 21 and 21 are inclined at the same angle as the road gradient with the lattice bars 23, 23,.

In FIG. 6 (a), the horizontal length of the grating fence 20 is a _{L 1,} in FIG. 6 (b), the horizontal length of the grating fence 20 becomes _{L 2.} As L ₁ > L ₂ and the road gradient angle δ increases, L ₂ decreases. For example, when L ₁ is 1300 mm and H ₀ is 362 mm as a numerical value indicating inclination, L ₂ is about 1248 mm. That is, it is shortened by about 52 mm. Further, in FIG. 6 (a), the lattice bars 23, 23, the interval _{S 1} of ... is 46 mm, in FIG. 6 (b), the lattice bars 23, 23, the spacing _{S 2} of ... is 44mm It becomes narrower.

On the other hand, the vertical length of the lattice fence 20 does not change. That is, the height from the ground to the plate 21 located on the lower horizontal beam 12 is H ₁ , and the height from the ground to the plate 21 located on the middle horizontal beam 12 is H ₂ , from the middle plate 21 to the upper end. When the height is H ₃ , neither FIG. 6 (a) nor FIG. 6 (b) changes. In FIG. 6B, the inclination δ in the parallelogram of the lattice fence 20 changes to the same angle as the road inclination angle δ.

  As shown in FIG. 3, the horizontal beams 12 at each step are alternately attached to the inside and the outside of the column 11 in adjacent column sections, so that the lattice fixed to the plane side of the three columns of horizontal beams 12, 12, 12 is used. The fence 20 is alternately attached to the inner side and the outer side in adjacent strut sections. Therefore, the parallelogram of the lattice fence 20 attached to the adjacent column sections has a symmetrical shape with the diametrically opposite directions. However, since the lattice fence 20 of this embodiment can change an inclination angle easily, it can respond sufficiently by one kind.

A case where the lattice fence 20 is fixed to the middle horizontal beam 12 and the lower horizontal beam 12 will be described.
As shown in FIGS. 4 and 7, in the horizontal beam 12 at each stage, cushioning materials 25, 25,... Such as packing are provided between the plate 21 and the plane side of the horizontal beam 12 at appropriate intervals in the longitudinal direction of the plate 21.・ Fix with mounting screws 25a, 25a,. At this time, as shown in FIGS. 7, 8, and 9, the plurality of lattice rods 23, 23,... Are placed on the plane side of the cross beam 12 via the clips 24, 24,. Since it is sandwiched, it is fixed with high strength.

A case where the lattice fence 20 is fixed to the upper horizontal beam 12 will be described.
In the present embodiment, the upper ends of the plurality of lattice bars 23, 23,... In the lattice fence 20 are bent into an L shape as shown in FIGS. 10 (a) and 10 (b). The holes 26, 26,... For inserting the lattice bars 23, 23,... Are provided on the plane side of the cross beam 12 by using a drilling tool such as a drill. .. Are inserted into the holes 26, 26,..., And the upper ends of the plurality of lattice bars 23, 23,. Hold down. Further, the presser bar 27 is fixed to the plane side of the upper horizontal beam 12 with a plurality of mounting brackets 28, 28,... With mounting screws 28a, 28a,. To do.

  The lattice fence 20 is fixed to the upper cross beam 12 at the positions where the plurality of lattice bars 23, 23,... And the belt-like plate 21 intersect with the clips 24, 24,. You may form so that rotation is possible. In this case, it is desirable to provide a means for preventing the plurality of lattice rods 23, 23,... From dropping downward from the holding portions 24a, 24a,.

  From the above, the entry prevention fence 10 according to the present embodiment can be easily handled by the single type of lattice fence 20 even on a road where uphill and downhill undulations are severe. In other words, in the section where the road is inclined, the columns 11, 11,... The lattice fence 20 is rotatable by the clips 24, 24,... And 40, 40,... At the intersection positions of the plurality of lattice rods 23, 23,. Therefore, it is possible to easily change the grid mounting members 21 and 21 obliquely with respect to the plurality of grid bars 23, 23,.

The lattice fence 20 is fixed to a plurality of horizontal beams 12, 12,... While being easily deformed into a parallelogram shape corresponding to the inclination angle of the horizontal beams 12, 12,. can do. Therefore, it is possible to easily cope with any kind of gradient section of the road with one kind of lattice fence 20. The mounting efficiency of the lattice fence 20 is improved. In addition, since it is not necessary to produce various types of lattice fences as in the prior art, it is possible to shorten the work period and the delivery time.

  By the way, with the same type of fence as before, it was necessary to make several types of fences in advance according to the road gradient. In addition, when the transverse beams 12, 12,... Are alternately changed in each column section and fixed to the columns 11, 11,. was there. Also, on roads with a large change in slope, it is necessary to manufacture many types of fences in advance in other locations such as factories, which makes it difficult to calculate the number of fences and the period of installation of the prevention fence It was difficult to deliver together. For this reason, there is a high possibility of placing an order with a wrong quantity or shape, in which case it is not possible to meet the delivery date. Furthermore, the more types of fences, the higher the cost.

  Since the lattice fence 20 of the present embodiment can be handled by one type, the plate 21 and the clips 24 and 40 can be mass-produced. Therefore, the mass production effect contributes to cost reduction, and the lattice fence 20 can be delivered quickly. Easy to pay. Thereby, the factor which delays the installation construction period of the entry prevention fence 10 can be decreased.

The lattice fence 20 has a structure in which a plurality of lattice rods 23, 23,... That are long in the substantially vertical direction are arranged in parallel in the lateral direction, so that it is easy for a small animal to slide, and the lattice fence 20 of the lattice fence 20 is climbed. Becomes difficult. Further, since the plurality of lattice rods 23, 23,... Are sandwiched and fixed to the cross beam 12 by the lattice attachment member 21 via the clips 24, 24,. In addition, by reducing the number of grid mounting members 21, the number of crosses with the plurality of grid bars 23, 23,... Is reduced, so the number of clips 24, 24,. The cost can be reduced.

  Next, the entrance prevention fence which concerns on 2nd embodiment of this invention is demonstrated with reference to drawings. FIG. 11 shows another embodiment of the entry prevention fence according to the present invention. Since the basic structure of the entry prevention fence 30 of 2nd embodiment is the same as that of the entry prevention fence 10 of 1st embodiment, the same member attaches | subjects the same code | symbol and abbreviate | omits detailed description.

As shown in FIG. 11 and FIGS. 12 (a) and 12 (b), the entry prevention fence 30 of the second embodiment has a horizontal beam 12 extending from the ground in the height direction between adjacent columns 11 and 11. Connect with approximately the same dimensional distance. The difference from the first embodiment is that the two horizontal beams 12 and 12 are attached to the outside of the column 11 (outside the road) in any column section. Or you may attach the cross beams 12 and 12 to the inner side (road side) of the support | pillar 11.
In addition, as shown in FIGS. 12A and 12B, the horizontal beams 12 and 12 at each stage are fixed by connection bolts 31 that penetrate the column 11. The cross section of the cross beam 12 has a semicircular shape, and the flat side of the semicircular shape is fixed to the support 11.

  The lattice fence 20 is fixed to the plane side of the two-stage horizontal beams 12 and 12 in order to block the above-mentioned column section. That is, the lattice fence 20 is attached to the inner side (road side) of the horizontal beams 12 and 12 of each step in all the column sections. Or the lattice fence 20 may be attached to the outer side (outside of a road) of the horizontal beams 12 and 12 of each step | level in all the support | pillar sections. The lattice fence 20 has the same structure as described above, and is similarly attached to the horizontal beams 12 and 12 of each step.

  FIG. 11 shows a state where the road is flat. Even when there is a road gradient, the lattice fence 20 is deformed and attached to a parallelogram inclined at the same angle as the road gradient as described above. Others are the same in structure, operation and effect.

  The present invention has applicability in manufacturing and sales of fences, prevention fences and lattice fences, road management organizations, forestry-related companies, and the like.

DESCRIPTION OF SYMBOLS 10 Access prevention fence 11 Support | pillar 11a Steel pipe pile foundation 11b Mortar 12 Cross beam 13 Block foundation 15 Connection bolt 20 Grid fence 21 Plate (lattice attachment member)
21a Through hole 22 Lattice 23 Lattice rod 24 Clip 24a Holding portion 24b Protruding portion 24c Groove portion 24d Split groove 25 Buffer material 25a Mounting screw 26 Hole 27 Presser bar 28 Mounting bracket 28a Mounting screw 30 Access prevention fence 31 Connection bolt 40 Clip 40a Holding portion

Claims (7)

A plurality of struts that are driven into the ground at appropriate intervals along the road and are erected in a substantially vertical direction;
A plurality of cross beams that are connected between adjacent columns at approximately the same dimensional distance from the ground in the height direction,
A lattice fence fixed to the plurality of horizontal beams, and
The lattice fence includes a lattice attachment member extending along at least two of the transverse beams;
A grid in which a plurality of grid bars that are long in a substantially vertical direction intersect with each grid mounting member and are juxtaposed in the lateral direction;
A clip that rotatably attaches to the grid mounting member and holds the grid bar at the crossing position of each grid bar and each grid mounting member,
An entry prevention fence characterized by comprising   The clip includes a bifurcated or ring-shaped holding portion that can hold the lattice rod, and a protrusion that can be inserted into a through-hole formed in the lattice mounting member and prevents removal. The entry prevention fence according to claim 1, wherein the entry prevention fence is provided.   The entry prevention fence according to claim 2, wherein the clip has elasticity having a biasing force with a bifurcated holding portion sandwiching the lattice rod.   4. The entry according to claim 1, wherein the lattice fence fixes the lattice attachment member to the transverse beam in a state where a plurality of lattice rods are sandwiched by the lattice attachment member with respect to the transverse beam. Prevent fence. A plurality of struts that are driven into the ground at appropriate intervals along the road and are erected in a substantially vertical direction, and a plurality of horizontal beams that are connected between the struts adjacent to each other at substantially the same distance from the ground in the height direction. A grid fence that is fixed to the plurality of horizontal beams in the entry prevention fence,
A strip-shaped grid attachment member extending along at least two of the transverse beams;
A grid in which a plurality of grid bars that are long in a substantially vertical direction intersect with each grid mounting member and are juxtaposed in the lateral direction;
A clip that rotatably attaches to the grid mounting member and holds the grid bar at an intersection position of each grid bar and each grid mounting member,
A lattice fence characterized by comprising   The clip includes a bifurcated or ring-shaped holding portion that can hold the lattice rod, and a protrusion that can be inserted into a through-hole formed in the lattice mounting member and prevents removal. The lattice fence according to claim 5, wherein   The lattice fence according to claim 6, wherein the clip has elasticity having a biasing force with a bifurcated holding portion sandwiching the lattice rod.

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