Support for guard fence and guard fence

Abstract

To provide a support for a guard fence and the guard fence capable of reducing installation work man-hours and improving strength.SOLUTION: A support 1 for a guard fence has a first side part 10 and a second side part 20 made of a fiber-reinforced resin or a resin, and a coupling member. The first side part and the second side part have a pair of elongated plate parts having the same width and having plate surfaces facing each other with a gap therebetween. The first side part has a mounting hole 11 for penetrating a horizontal member at a position facing each plate part. Each plate part of the second side part has a plate surface mutually connected to a longitudinal edge part of each plate part of the first side part and has a bolt hole 21 penetrating at a position crossing the mounting hole at a position sandwiched by each plate part of the first side part. The coupling member has: a bolt shaft passing through the bolt hole; a head part arranged at a position where the longitudinal edge part of each plate part of the first side part and one plate part of the second side part are separated and overlapped; and a nut screwed and fixed to the bolt shaft at a position where the other plate part of the second side part is separated and overlapped.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a support column for a protective fence and a protective fence.

Background Art

[0002] As a conventional protective fence, the inventor has developed a fence having a plurality of column members made of fiber-reinforced resin, one or more intermediate horizontal members, and an upper horizontal member (see, for example, Patent Document 1). The protective fence is characterized by being light and easy to transport, having high intersection strength, being resistant to corrosion, and having a long service life.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, in the protective fence described in Patent Document 1, when the column member is manufactured from a hollow square pipe and the column member and the intermediate horizontal member or the like are fixed with fixing pins and an adhesive, there is a problem in that the installation work man-hours are required for fixing with the adhesive. Further, in order to further improve the fixing strength between the column member and the intermediate horizontal member or the like, it is necessary to insert a solid material into the hollow column member, and there is a problem in that the installation work man-hours are further increased.

[0005] The present invention has been made paying attention to such problems, and an object thereof is to provide a support column for a protective fence and a protective fence capable of reducing installation work man-hours and improving strength.

Means for Solving the Problems

[0006] In order to achieve the above object, the pillar for a protective fence according to the present invention has a pair of elongated plate portions of the same width whose plate surfaces face each other with a gap therebetween, and has one or more mounting holes for passing a cross member at opposing positions of each plate portion. The pillar includes a first side portion made of a fiber-reinforced resin or a resin. The first side portion has a pair of elongated plate portions whose plate surfaces face each other with a gap therebetween. Each plate portion is arranged along the longitudinal direction of the first side portion, and each plate portion is joined to the longitudinal edge portions of the plate portions of the first side portion with the plate surfaces sandwiching the first side portion. The pillar further includes a second side portion made of a fiber-reinforced resin or a resin. The second side portion has a pair of elongated plate portions whose plate surfaces face each other with a gap therebetween. At a position where the second side portion is sandwiched by the plate portions of the first side portion and intersects with the mounting hole, the second side portion has one or more bolt holes penetrating therethrough. The pillar also includes a bolt shaft penetrating through the bolt holes, a head coupled to one end of the bolt shaft and disposed at a position overlapping with and separating the longitudinal edge portion of each plate portion of the first side portion and one plate portion of the second side portion, and a nut screwed and fixed to the bolt shaft at a position overlapping with and separating the longitudinal edge portion of each plate portion of the first side portion and the other plate portion of the second side portion. The pillar is characterized by having a coupling member including the above components.

[0007] In the pillar for a protective fence according to the present invention, the plate surfaces of the plate portions of the second side portion are joined to the longitudinal edge portions of the plate portions of the first side portion. The bolt shaft of the coupling member penetrates through the bolt holes of the second side portion, and the head and the nut of the coupling member are disposed at positions overlapping with and separating the longitudinal edge portion of each plate portion of the first side portion and one plate portion or the other plate portion of the second side portion. Therefore, when the nut is tightened on the bolt shaft, the compressive force due to the tightening is applied in the width direction of the first side portion, improving the strength. In the pillar for a protective fence according to the present invention, since there is no need to use an adhesive or a solid material for fixing the cross member, the number of man-hours for installation work can be reduced.

[0008] The protective fence according to the present invention includes a plurality of the above-described pillars for a protective fence and a cross member having fixing through holes passing through the mounting holes of each pillar for a protective fence and corresponding to the bolt holes. The coupling member is characterized in that the bolt shaft penetrates through the bolt holes and the fixing through holes, and the nut is screwed to the bolt shaft to fix the cross member to the pillar for a protective fence. Since the protective fence according to the present invention has the support column for the protective fence according to the present invention, there is no need to use an adhesive or a solid material for fixing the cross members, and the number of man-hours for installation work can be reduced. Also, the strength is improved.

Effect of the Invention

[0009] According to the present invention, it is possible to provide a support column for a protective fence and a protective fence that can reduce the number of man-hours for installation work and improve the strength.

Brief Description of the Drawings

[0010]

Figure 1

Figure 2

Figure 3

Mode for Carrying Out the Invention

[0011] Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIGS. 1 and 2 show the support column for the protective fence of the embodiment of the present invention. As shown in FIGS. 1 and 2, the support column 1 for the protective fence has a first side portion 10, a second side portion 20, and a coupling member 30. The first side portion 10, the second side portion 20, and the coupling member 30 are made of fiber-reinforced resin or resin.

[0012] The first side portion 10 has a pair of flat and elongated plate portions having the same width and facing each other with a gap therebetween so that their plate surfaces are parallel to each other. The first side portion 10 has mounting holes 11 for passing the cross member 3 at the opposing positions of the respective plate portions. The opposing plate portions have the same dimensions and the same shape. The mounting holes 11 of each plate portion are one or more in number. In FIG. 1, the first side portion 10 has three pairs of mounting holes 11 at equal intervals in the upper and middle portions of each plate portion.

[0013] The second side portion 20 has a pair of flat and elongated plate portions with the same width, facing each other with a gap therebetween and having parallel plate surfaces. The second side portion 20 has the same length as the first side portion 10. Each of the opposing plate portions has the same dimensions and the same shape. Each plate portion is arranged along the longitudinal direction of the first side portion 10. Each plate portion is joined to the longitudinal edge portions 12 of the respective plate portions of the first side portion 10 with its plate surface perpendicular to the first side portion 10, sandwiching the first side portion 10. The second side portion 20 has one or two or more pairs of bolt holes 21 penetrating at positions orthogonal to the mounting holes 11 at positions where the second side portion 20 is sandwiched by the respective plate portions of the first side portion 10, at opposing positions of the respective plate portions. In FIG. 1, the second side portion 20 has three pairs of bolt holes 21, the same as the mounting holes 11.

[0014] Further, the second side portion 20 has one or two or more pairs of bolt holes 22 penetrating at positions where the second side portion 20 is sandwiched by the respective plate portions of the first side portion 10, at opposing positions of the lower portions of the respective plate portions. The first side portion 10 and the second side portion 20 have a hollow portion inside and are integrally formed. The pillar 1 for the protective fence has the same vertical length and horizontal length in the cross section. At the upper ends of the first side portion 10 and the second side portion 20, caps 40 made of fiber-reinforced resin or resin for closing the hollow portion are attached.

[0015] The coupling member 30 has a bolt shaft 31, a head 32, and a nut 33. The bolt shaft 31 is in the shape of a round bar with a thread groove spirally engraved on its circumferential surface. The bolt shaft 31 penetrates the bolt hole 21 of the second side portion 20. The bolt shaft 31 may be a full thread or a half thread. The head 32 is in the shape of a plate of a regular hexagonal prism and is integrally joined to one end of the bolt shaft 31 with the same center line as the bolt shaft 31. The head 32 is arranged at a position overlapping with the longitudinal edge portion 12 of each plate portion of the first side portion 10, with a space therebetween from one plate portion of the second side portion 20.

[0016] The bolt shaft 31 and the head 32 constitute a hexagonal bolt. The nut 33 is screwed and fixed to the bolt shaft 31 at a position overlapping with the longitudinal edge portion 12 of each plate portion of the first side portion 10, with a space therebetween from the other plate portion of the second side portion 20. The inner diameter of the inscribed circle of the cross section of the head 32 and the nut 33 is longer than the interval between the outer plate surfaces of the first side portion 10.

[0017] The protective fence 2 has a plurality of support columns 1 for the protective fence and one or more cross members 3. Each support column 1 for the protective fence has the same dimensions and the same shape. Each support column 1 for the protective fence is erected in parallel with each other. The cross member 3 is made of a hollow round bar made of fiber-reinforced resin or resin. In FIG. 3, three cross members 3 are provided. Each cross member 3 has the same dimensions and the same shape. Each cross member 3 has a fixing through hole that passes through the mounting hole 11 of each support column 1 for the protective fence and corresponds to the bolt hole 21. In each coupling member 30, the bolt shaft 31 passes through the bolt hole 21 of the second side portion 20 and the fixing through hole of the cross member 3, and the nut 33 is screwed with the bolt shaft 31 to fix each cross member 3 to the support column 1 for the protective fence. Each coupling member 30 has the same dimensions and the same shape. Each cross member 3 is provided in parallel with each other.

[0018] Next, the operation will be described. The protective fence 2 is used, for example, for the purpose of separating a roadway and a sidewalk or separating oncoming lanes. The support column 1 for the protective fence used for the protective fence 2 has its lower end inserted into a foundation provided in the ground and is fixed by a coupling member 30 that passes through the bolt hole 22 at the lower part of the foundation and the second side portion 20. The three cross members 3 are inserted into the mounting holes 11 of the first side portions 10 of the plurality of support columns 1 for the protective fence and are fixed by a coupling member 30 that passes through the bolt hole 21 of the second side portion 20.

[0019] The plate surface of each plate portion of the second side portion 20 is joined to the longitudinal edge portion 12 of each plate portion of the first side portion 10. The bolt shaft 31 of the coupling member 30 passes through the bolt hole 21 of the second side portion 20, and the head portion 32 and the nut 33 of the coupling member 30 are in a position overlapping with each other with the longitudinal edge portion 12 of each plate portion of the first side portion 10 and one or the other plate portion of the second side portion 20 intervening therebetween. Therefore, when the nut 33 is tightened to the bolt shaft 31, the compressive force due to the tightening is applied perpendicularly to the width direction of the first side portion 10. For this reason, the strength of the support column 1 for the protective fence and the protective fence 2 is improved. Since it is not necessary to use an adhesive or a solid material for fixing the cross member 3 to the support column 1 for the protective fence, the number of man-hours for installing the support column 1 for the protective fence and the protective fence 2 can be reduced.

Explanation of reference numerals

[0020] 1 Support for protective fence, 2 Protective fence, 3 Cross member, 10 First side part, 20 Second side part, 30 Coupling member, 11 Mounting hole, 12 Longitudinal edge part, 21 Bolt hole, 22 Bolt hole, 30 Coupling member, 31 Bolt shaft, 32 Head, 33 Nut, 40 Cap

Claims

1. A first side portion made of fiber-reinforced resin or resin, having a pair of elongated plate portions of the same width with their plate surfaces facing each other with a gap therebetween, and having one or more mounting holes for passing a cross-member therethrough at opposing positions of each plate portion; A second side portion made of fiber-reinforced resin or resin, having a pair of elongated plate portions with their plate surfaces facing each other with a gap therebetween, each plate portion being arranged along the longitudinal direction of the first side portion, each plate portion being joined to the longitudinal edge portions of each plate portion of the first side portion with the plate surfaces sandwiching the first side portion, and having one or more bolt holes penetrating at a position intersecting the mounting hole at a position sandwiched by each plate portion of the first side portion; A bolt shaft passing through the bolt hole, a head portion joined to one end of the bolt shaft and arranged at a position overlapping while separating the longitudinal edge portion of each plate portion of the first side portion and one of the plate portions of the second side portion, and a nut screwed and fixed to the bolt shaft at a position overlapping while separating the longitudinal edge portion of each plate portion of the first side portion and the other plate portion of the second side portion; and a coupling member having the same; A support column for a protective fence, characterized by comprising the above.

2. A plurality of support columns for protective fences according to Claim 1, and A cross-member having fixing through-holes passing through the mounting holes of each support column for a protective fence and corresponding to the bolt holes, and The coupling member is characterized in that the bolt shaft passes through the bolt hole and the fixing through-hole, and the nut is screwed to the bolt shaft to fix the cross-member to the support column for a protective fence. A protective fence, characterized by the above.

Images