JPH1161757A - Protection fence - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a protecting fence such as a crossing prevention fence, a fall prevention fence and a boundary fence installed at a boundary, etc., between a sidewalk and a roadway. SOLUTION: Through-holes are bored in both ends on the upper surface of a fixture 2 mounted to the upper end of a post are used for bolt holes, a ridge have the same form as that of the outward appearance of a horizontal beam 1 is formed along the center of the bolt holes, and a slope is so formed that a recess section is spread toward the center of the fixture 2 from the ridge and an edge section. Both ends of the horizontal beam 1 is mounted on the ridge of the fixture 2 to fix. In that case, since the horizontal beam 1 and fixture 2 can be fixed by changing angles of both horizontal and vertical directions, the adjoing horizontal beams 1 are sloped and can be connected, and a protection fence can be easily installed in the shape of a non-straight line in a plane view and in a sloped state.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a protection fence such as a crossing prevention fence, a fall prevention fence, and a boundary fence installed at a boundary between a sidewalk and a road.

[0002]

2. Description of the Related Art Conventionally, in a protective fence in which a horizontal beam is erected at the upper end of a column, one end of a connecting member having an outer diameter substantially equal to the inner diameter of the horizontal beam is connected to the end of the horizontal beam. Insert the other end of this connecting member into the end of the next horizontal beam, place the connecting part of the horizontal beam on the fixture provided at the upper end of the column, and through the bolt hole provided in the fixture Then, bolts are inserted into female screw portions provided at both ends of the connection member, and the horizontal beam is attached to the attachment at the upper end of the support. The contact surface of the fixture with the horizontal beam generally has the same shape as the outer shape of the horizontal beam, so that the horizontal beam and the fixture are well fitted when the protective fence is installed in a straight line.

[0003]

However, in the above-mentioned protective fence, a horizontal beam is required when the protective fence is installed non-linearly in plan view or when the protective fence is installed on a sloped land. And the fitting of the fixture was bad, and it was necessary to use a special fixture.

Accordingly, the present inventor has conducted intensive studies in view of the drawbacks of the prior art, and as a result, has provided a protective fence that can be installed easily and can install adjacent horizontal beams in a non-linear manner in plan view or with a gradient.

[0005]

According to a first aspect of the present invention, there is provided a protective fence in which a horizontal beam is mounted on an upper end of a pillar erected on the surface of the ground. Through holes are drilled at both ends of the upper surface of the fixture to form bolt holes, and a ridge line having the same shape as the horizontal beam outline is formed along the center of the bolt hole, and from this ridge line toward the center and the edge of the fixture. A gradient is formed so that the concave part widens, and the end of the horizontal beam is mounted and attached on the ridgeline of this fixture, and the horizontal beam and the fixture are attached at different angles in both the horizontal and vertical directions Since it is possible, adjacent horizontal beams can be connected at an angle to each other, and the protection fence can be easily installed in a non-linear shape in plan view or with a gradient.

In the protective fence according to a second aspect of the present invention, the horizontal beam is formed of a tubular body having a circular cross section, and the ridge on the upper surface of the fixture is formed in a semicircular shape. The conical slope is formed so that the concave part widens toward the, and it is easy to fit when the horizontal beam is attached to the mounting fixture vertically and horizontally at an angle, and it can be installed in any place. It can be easily installed without using special fittings.

In the protective fence according to the third aspect of the present invention, a connecting tool having female threads at both ends of a rod is inserted into both ends of a horizontal beam, and bolts are connected through bolt holes of the mounting tool. The ends of adjacent horizontal beams are firmly connected to each other and can be connected at an angle. The rod-shaped body according to the present invention only needs to have a length capable of connecting the ends of adjacent horizontal beams to each other, and may be a plate-shaped body having an appropriate length.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. Supports 3 erected on the surface at appropriate intervals
A horizontal beam 1 is attached between them, forming a protective fence. The support 3 is provided with a fixture 2 at the upper end.
The upper horizontal beam 1 is mounted on the upper side, and the lower horizontal beam 1 is mounted on the side wall. The fixture 2 provided on the upper part of the support 3 is composed of a cap 21 mounted on the upper end of the support 3 and a mounting part 22 mounted on the upper part of the cap 21. The beam 1 is mounted.
The column 3 is made of a hollow metal body such as a steel pipe, and is appropriately surface-treated such as painting or plating.

The upper horizontal beam 1 is mounted on a fixture 2 provided at the upper end of a column 3. The horizontal beam 1 is manufactured by cutting a steel pipe to an appropriate length and boring holes at both ends. A connecting member 4 is provided inside the upper horizontal beam 1.
The bolt is screwed into the female screw portion of the connection member 4 through a bolt hole formed in the mounting portion 22, and the horizontal beam 1 is attached to the attachment 2 at the upper end of the column 3. The horizontal beam 1 is not limited to a pipe such as a steel pipe, and a shape member made of an aluminum alloy or the like may be used, but a pipe having a wall surface over the entire cross section, particularly a round pipe having a circular cross section is preferable. Used for

The connecting member 4 is formed by bending a steel plate into a U-shape to form a rod-shaped body, and through-holes are formed at both ends of the rod-shaped body. To form a female screw portion. At the center of the connecting member 4, a cover having an inner diameter larger than the outer diameter of the horizontal beam 1 is attached. This cover has a horizontal beam 1
The lower part of the cylindrical body having a diameter larger than the outer diameter is cut out, and the lower part is attached to the center of the connecting member 4. The connection member 4 may be appropriately subjected to a surface treatment such as plating, or may be made of a stainless steel plate or another stainless steel plate instead of a steel plate. The cover may be made by molding a synthetic resin, or may be made by casting a metal such as an aluminum alloy or zinc. Although the rod-shaped body constituting the connecting body is described as having a U-shape, it is not limited to this, and may be one that is bent into an appropriate shape such as a circular cross section, and female screw portions are provided at both ends of a rectangular plate. The provided one may be used.

The attachment 2 comprises a cap 21 attached to the upper end of the column 3 and a mounting portion 22 pivotally mounted on the upper portion of the cap 21. The cap portion 21 includes a cylindrical portion having an outer diameter adapted to the inner diameter of the column 3, a lid having one end closed, a flange portion having the lid extending outward, and And a receiving portion in which a plate-like body whose upper portion is cut off in a semicircular shape is formed, and a pivot hole is formed in the center of the receiving portion. The mounting portion 22 is formed in a gutter shape conforming to the outer shape of the horizontal beam 1, and through holes are formed at both ends thereof to form bolt holes. 23 are formed, and a gradient is formed so that the concave portion expands from the ridge line 23 toward the center and the edge of the fixture. When the horizontal beam 1 having a circular cross section is used, a ridge line 23 having a semicircular cross section is formed, and a slope is formed in a conical shape so that the concave portion spreads from the ridge line 23 toward the center and the edge of the mounting portion 22. Therefore, the horizontal beam 1 can be attached at an angle in the vertical direction and / or the horizontal direction. The attachment is preferably made by casting a zinc alloy or an aluminum alloy, but may be made by molding a synthetic resin or the like.

[0012]

As described above, the protective fence according to the first aspect of the present invention is a protective fence in which a horizontal beam is attached to the upper end of a pillar erected on the ground surface, and is attached to the upper end of the pillar. Through holes are drilled at both ends of the upper surface of the fixture to form bolt holes, and a ridge line having the same shape as the horizontal beam outline is formed along the center of the bolt hole, and from this ridge line toward the center and the edge of the fixture. A gradient is formed so that the concave part widens, and the end of the horizontal beam is mounted and attached on the ridgeline of this fixture, and the horizontal beam and the fixture are attached at different angles in both the horizontal and vertical directions Since it is possible, adjacent horizontal beams can be connected at an angle to each other, and the protection fence can be easily installed in a non-linear shape in plan view or with a gradient.

In the protective fence according to the present invention, the horizontal beam is formed of a tubular body having a circular cross section, and the ridge line on the upper surface of the fixture is formed in a semicircular shape. The conical slope is formed so that the concave part widens toward the, and it is easy to fit when the horizontal beam is attached to the mounting fixture vertically and horizontally at an angle, and it can be installed in any place. It can be easily installed without using special fittings.

Further, in the protective fence according to the third aspect of the present invention, a connecting tool provided with female threads at both ends of a rod is inserted into both ends of a horizontal beam, and bolts are connected through bolt holes of the mounting tool. The ends of adjacent horizontal beams are firmly connected to each other and can be connected at an angle. The rod-shaped body according to the present invention only needs to have a length capable of connecting the ends of adjacent horizontal beams to each other, and may be a plate-shaped body having an appropriate length.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an upper part of a support of a protective fence according to the present invention.

FIG. 2 is a plan view showing an example of a fixture for a protective fence of the present invention.

FIG. 3 is a cross-sectional view showing a mounting state of a horizontal beam of the protective fence of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Horizontal beam 2 Fixture 21 Cap part 22 Placement part 23 Ridge line 3 Prop 4 Connection member

Claims (3)

[Claims] 1. A protective fence in which a horizontal beam is attached to the upper end of a column standing on the ground surface, wherein through holes are formed in both ends of the upper surface of a fixture attached to the column upper end. A hole is formed, and a ridge line having the same shape as the horizontal beam outer shape is formed along the center of the bolt hole, and a gradient is formed so that a concave portion widens from the ridge line toward the center and the edge of the fixture. A protective fence characterized in that the end of the horizontal beam is placed and attached on the ridge. 2. The horizontal beam comprises a tube having a circular cross section,
2. The protection according to claim 1, wherein the ridgeline on the upper surface of the fixture is formed in a semicircular shape, and a slope is formed in a conical shape from the ridgeline so that the concave portion expands toward the center and the edge of the fixture. fence. 3. A connecting tool provided with female threads at both ends of a rod is inserted into both ends of a horizontal beam, and a bolt is screwed into the female thread of the connecting tool through a bolt hole of the fitting. The protective fence according to claim 1 or 2, wherein: