JP2002021031A - Guard rail - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a guard rail solving such a problem as the conventional guard rail can not freely incline or bend crosspieces along the slope or curve of a road. SOLUTION: A wooden cylinder 3 hollowing the center thereof to form in the shape of a cylinder is concentrically fitted to the circumference of the steel pipe 2 erected on the ground to form a strut 1, a supporting piece 4 formed by connecting two steel plate-made free arms 6 to both ends of the crosspiece wood 7 through hinge barrels 5 arranged in the vertical direction is provided to connect both crosspieces 7 and 7 adjacent to each other in succession, the crosspieces 7 are arranged between the struts 1 and 1 adjacent to each other, the free arms 6 of the supporting piece 4 are fixed to the strut 1 with one horizontal bolt 8 passing through the free arms 6 and strut 1, and a mushroom- like wooden pin 9 is fitted and fixed to the upper end of the strut 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a guard rail having a wooden appearance, which can be easily mounted on a slope or a road having a sharp curve.

[0002]

2. Description of the Related Art For example, guardrails are provided on roads in mountainous areas to ensure safety. In general, such a guardrail is formed by fixing both ends of a crosspiece to a pillar erected on a road with bolts or the like. Here, if the road is flat and the curve is gentle, it can be easily installed.On the other hand, if the road is greatly inclined and there are many sharp curves, the rungs should be fitted according to the slope and the sharp curve. You cannot tilt or bend freely.

[0003]

The problem to be solved is that the conventional guardrail cannot freely tilt or bend the crosspiece in accordance with the inclination or curve of the road.

[0004]

A description will be given with reference to FIGS. 1 to 4. In the guardrail according to the present invention, a pillar 1 is formed by concentrically fitting a hollow wooden tube 3 around the outer periphery of a steel pipe 2 erected on the ground.
A support piece 4 formed by connecting two steel plate free arms 6 via hinge shafts 5 arranged in the vertical direction is provided to connect adjacent wood pieces 7 for a crossbar. Then, a timber 7 for the cross bar is arranged between the adjacent columns 1 and 1, and the free arm 6 of the support piece 4 is fixed to the column 1 by one horizontal bolt 8 penetrating the free arm 6 and the column 1. A mushroom-shaped plug 9 is fitted and fixed to the upper end of the column 1.

[0005] Each free arm 6 of the support piece 4 is formed of a first arm 6a on the hinge shaft 5 side and a second arm 6b on the side of the timber 7 for the rung, and one free arm 6b. In the arm 6,
One horizontal bolt 8 is inserted into the overlapped portion 11 of the first arm 6a and the second arm 6b to be fixed to the column 1, and the second arm 6b is fixed to the timber 7 for the cross bar with the connecting bolt 10. In the free arm 6 on the other side, the connecting portion 12 between the first arm 6a and the second arm 6b is connected to the timber 7 for the crossbar by the connecting bolt 10
Sometimes fixed with.

[0006]

1 to 4 show an embodiment of a guardrail according to the present invention. This guardrail is
A column 1 is formed by concentrically fitting a wooden tube 3 having a hollow center and a cylindrical shape on the outer periphery of a steel pipe 2 erected by placing concrete 21 on the ground 20. Further, a support piece 4 formed by connecting two free arm portions 6 made of steel plates via hinge shafts 5 arranged in the vertical direction is provided at both ends of the timber for crossbar 7 to provide the timber for crossbar 7, 7 are connected to each other.

Further, a timber 7 for a crosspiece is arranged between the adjacent columns 1, 1, and the free arm 6 of the support piece 4 is held by one horizontal bolt 8 penetrating the free arm 6 and the column 1. It is fixed to. Then, a mushroom-shaped wooden plug 9 is provided at the upper end of the column 1.
Are fitted and fixed.

In the present embodiment, each free arm 6 of the support piece 4 is divided into a first arm 6a on the hinge shaft 5 side and a second arm 6b on the side of the timber 7 for the crosspiece. It is formed by. In the free arm 6 on one side, one horizontal bolt 8 is inserted into the overlapped portion 11 of the first arm 6a and the second arm 6b to be fixed to the column 1 and the second arm 6 6b is fixed to a crosspiece wood 7 with a connecting bolt 10. In the free arm 6 on the other side, the first arm 6 a and the second arm 6
The joint portion 12 with b is fixed to the crosspiece wood 7 with the connecting bolt 10.

The operation of the guardrail will be described.
In this guardrail, a support piece 4 formed by connecting two free arm portions 6 made of a steel plate via hinge shafts 5 arranged in a vertical direction is provided at both ends of a timber 7 for a crosspiece, The support pieces 4 connect the timbers 7 for crossbars. Accordingly, the timber 7 for the crosspiece can be freely rotated in the horizontal direction with the hinge axis 5 as the vertical axis, and can be freely bent at the column 1 in accordance with the sharp curve of the road.

The guardrail has a structure in which a timber for crossbars 7 is disposed between adjacent columns 1, and a free arm portion 6 of a support piece 4.
And one horizontal bolt 8 penetrating the free arm 6 and the support 1.
Is fixed to the column 1. Therefore, it is possible to freely rotate the timber for crossbar 7 in the vertical direction with one horizontal bolt 8 as a horizontal axis.
Can be freely tilted at the part. This vertical rotation is achieved by the first arm 6a and the second arm 6b rotating about the horizontal bolt 8 as a rotation axis at the overlapping portion 11 of the free arm 6 on one side. .

In this guardrail, the outer portion of the column 1 is formed by a wooden cylinder 3 and a wooden plug 9 is attached.
Moreover, since it is the thing which the wooden rung wood 7 was similarly laid between the support | pillars 1, when it is installed in a road in a mountainous area, it naturally blends into the surrounding landscape with many trees. Moreover, since the inside of the support | pillar 1 is formed with the steel pipe 2, it is excellent in durability. further,
Since the mushroom-shaped stopper 9 is fitted and fixed to the upper end of the column 1, it is possible to prevent water and dust from accumulating in the column 1.

Although the wooden tube 3 is fixed to a cylindrical shape, it is not limited to this and may be a square tube or the like. Also,
The stopper 9 may be wooden, but may be a plastic or metal stopper.

[0013]

According to the guardrail of the present invention, a support formed by connecting two free arm portions 6 made of steel plate to both ends of a timber 7 for crossbars via hinge shafts 5 arranged vertically. A piece 4 is provided, and the supporting piece 4
Since they are connected to each other, the timber for crossbar 7 can be freely rotated in the horizontal direction with the hinge axis 5 as the vertical axis, and can be freely bent at the column 1 in accordance with the sharp curve of the road. This makes it possible to provide a guardrail corresponding to the curve of the road, and the mounting work is easy, and the workability is excellent.

The guardrail has a structure in which timber for crossbars 7 is arranged between adjacent columns 1, and free arm portions 6 of support pieces 4.
And one horizontal bolt 8 penetrating the free arm 6 and the support 1.
Therefore, the crosspiece wood 7 can be freely rotated in the vertical direction with one horizontal bolt 8 as a horizontal axis, and can be inclined according to the inclination angle of the road. As a result, a gad rail corresponding to the inclination of the road can be provided, and the mounting work is easy, and the workability is good.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an installation example of a guardrail according to the present invention.

FIG. 2 is a longitudinal sectional view showing a main part of an embodiment of the guardrail according to the present invention.

FIG. 3 is a cross-sectional view showing a main part of an embodiment of the guardrail according to the present invention.

FIG. 4 is a front view showing a main part of an embodiment of the guardrail according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Prop 2 Steel pipe 3 Wooden cylinder 4 Support piece 5 Hinge axis 6 Free arm 6a First arm 6b Second arm 7 Wood for rung 8 Horizontal bolt 9 Plug 10 Connecting bolt 11 Overlapping part 12 Joining part 20 Ground 21 Concrete

Claims (2)

[Claims] 1. A pillar (1) is formed by concentrically fitting a hollow wooden tube (3) to the outer periphery of a steel pipe (2) standing on the ground to form a support (1). At both ends, a support piece (4) formed by connecting two steel plate free arms (6) via hinge shafts (5) arranged vertically is provided adjacent to each other to be continuous. The crossing lumbers (7, 7) are connected to each other, the crossing lumbers are arranged between the adjacent columns (1, 1), and the free arm of the support piece is connected to one of the penetrating the free arm and the column. A guardrail which is fixed to a support by a horizontal bolt (8), and a mushroom-shaped stopper (9) is fitted and fixed to an upper end of the support. 2. The free arm (6) of the support piece (4) is connected to a first arm (6a) on the hinge shaft (5) side and a second arm on the side of the timber for crossbar (7). (6b), and in one free arm portion, the first arm portion (6a) and the second arm portion (6
b), a single horizontal bolt (8) is inserted into the overlapping portion (11) to fix it to the column (1), and the second arm (6)
b) is fixed to the timber for the crossbar with the connecting bolt (10), and the joint (12) between the first arm (6a) and the second arm (6b) is connected to the free arm on the other side. The guardrail according to claim 1, wherein the guardrail is fixed to wood with a connecting bolt.