JP2503776Y2 - Guard fence - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a protective fence that is installed on a slope along a road to protect the road from falling rocks and avalanches.

[Prior Art] As shown in FIG. 8, in this type of protective fence, a plurality of columns 2 are erected at regular intervals along the left-right direction of the slope 1, and a cable is provided between these columns 2. A plurality of 3 are stretched, a cross beam 4 for reinforcement is laid between the upper ends of the columns 2, and a wire net 5 is stretched between the columns 2.

The mounting structure of the cross beam 4 will be described with reference to FIG. 9 and FIG.
As shown in FIG. 10, a gusset plate 6 is horizontally attached and fixed to the upper end of the column 2 by welding, and the end of the horizontal beam 4 is superposed on the gusset plate 6, and in this state, the gusset plate 6 is removed from the horizontal beam 4. A bolt 7 is inserted through the bolt 7, a nut 8 is screwed into the bolt 7, and the cross beam 4 is fixed to the gusset plate 6 by tightening the bolt 7 and the nut 8.

[Problems to be Solved by the Invention] In such a conventional configuration, when the ground in the left-right direction of the slope 1 is horizontal, as shown in FIG. 8, the horizontal beam 4 and the gusset plate 6 are straight. Although it is arranged on the line and has a good appearance, as shown in FIG. 11, when the ground in the left-right direction of the slope 1 is inclined in the left-right direction, the horizontal beam 4 and the gusset plate 6 are When they are connected so as to intersect with each other, a step is generated, which not only deteriorates the appearance but also makes the work of tensioning the wire net 5 troublesome.

Therefore, as shown in FIG. 12, the gusset plate 6
In some cases, the gusset plate 6 and the cross beam 4 are arranged in a straight line by welding the column to the pillar 2 in advance so as to correspond to the inclination of the ground. Before construction, it is necessary to investigate the inclination angle of the ground in advance and attach the gusset plate 6 to the support column 2 so as to correspond to the angle, and it is quite possible to correspond to the subtle inclination of the site. It is difficult, and further, the columns 2 to which the gusset plates 6 are attached cannot be mass-produced uniformly as stock materials, so that there is a problem that manufacturing efficiency is lowered and cost is increased.

The present invention has been made paying attention to such a point, and the purpose thereof is that it is possible to install the horizontal beam and the gusset plate so that they are always arranged in a straight line by using uniformly manufactured columns. To provide a protective fence.

[Means for Solving the Problems] In order to achieve such an object, the present invention erected a plurality of columns along the left-right direction of the slope and installed a cross beam between the upper ends of these columns, A gusset plate is provided at the upper end of each strut, a pair of arc-shaped guide holes are formed in the gusset plate, and a pair of arc-shaped guide holes are formed on the strut from these guide holes. Insert the bolts to attach the gusset plate so that it can rotate in the vertical direction, rotate these gusset plates so that the angle corresponds to the inclination of the slope in the left-right direction, and in this state, attach both ends of the horizontal beam to these gusset plates. Is attached and fixed.

[Operation] In such a configuration, the horizontal beam and the gusset plate are arranged in a straight line, and the three members of the horizontal beam, the gusset plate, and the cable match the inclination angle of the ground, and therefore the appearance is good and the wire mesh tension is high. Installation work becomes easy. The angle of the gusset plate can be arbitrarily changed according to the inclination angle of the ground at the construction site of the guard fence, so that the troublesome work of investigating the inclination angle of the ground in advance is unnecessary, and the gusset plate It is possible to uniformly mass-produce the columns to which the columns have been attached as stock materials in advance.

[Embodiment] An embodiment of the present invention will be described below.

A first embodiment is shown in FIGS. 1 to 5. The pillar 2 is made of H-shaped steel and has a pair of bolt holes 10 on the front surface of its upper end.
Are formed separately from each other on the left and right. A pair of arcuate guide holes 11 are formed in the middle of the gusset plate 6 so as to be spaced apart from each other in the left and right directions, and long holes 12 are formed in both ends of the gusset plate 6 in the left and right directions. There is. The gusset plate 6 is superposed on the front surface of the upper end portion of the column 2, and in this state, the bolts 13 are passed through the guide holes 11 and the bolt holes 10 from the front surface side of the gusset plate 6, respectively.
Are inserted, and nuts 14 are screwed onto these bolts 13.

When constructing a protective fence, a plurality of columns 2 are erected vertically along the left-right direction of the slope 1, and a plurality of cables 3 are stretched in parallel between the columns 2. When the ground on the slope 1 is tilted in the left-right direction, the bolt 13 is loosened, and the gusset plate 6 is rotated vertically along the guide hole 11 to an angle that matches the ground tilt angle. Incline,
In this state, the bolt 13 is tightened to fix the gusset plate 6. Then, the end of the cross beam 4 is applied to the end of the gusset plate 6, and the cross beam 4 is removed from the gusset plate 6.
The bolt 15 is inserted over the long hole 12 of the above, and the nut 16 is screwed and tightened to the bolt 15 to fix the cross beam 4 to the gusset plate 6, and the cross beam is sequentially inserted between the gusset plates 6 in this procedure. Build 4 After that, a wire mesh 5 is attached between the columns 2 so that one side edge of the wire mesh 5 is aligned with the cross beam 4.

According to such a configuration, the horizontal beam 4 and the gusset plate 6 are arranged in a straight line, and the three members of the horizontal beam 4, the gusset plate 6, and the cable 3 match the inclination angle of the ground, and therefore the appearance is good, and The work of tensioning the wire net 5 is also easy.

The angle of the gusset plate 6 can be arbitrarily changed according to the inclination angle of the ground at the construction site. Therefore, the troublesome work of investigating the inclination angle of the ground in advance is unnecessary, and the gusset plate The columns 2 to which the 6 are attached can be mass-produced uniformly in advance as stock materials, which has the advantages of improving manufacturing efficiency and reducing costs.

A second embodiment is shown in FIGS. 6 and 7, and in this embodiment, a pair of gusset planes 6a, 6b are provided at the upper end of the column 2. These gusset plates 6a,
The end portions of one end side of 6b are overlapped with each other, and in this overlapped portion, a pair of symmetrical arc-shaped guide holes 11 are formed in each of the gusset plates 6a and 6b. Bolts 13 are inserted into the columns 2 through the guide holes 11, and the gusset plates 6a and 6b are rotatably attached to the columns 2 by tightening the bolts 13.

In such a configuration, for example, when the ground in the section where the protection fence is installed is horizontal to the middle and is inclined from the middle, as shown in FIG. 7, one of the gusset plates 6a is leveled. The other gusset plate 6b to incline so as to correspond to the inclination angle of the ground,
By supporting the horizontal beam 4 via these gusset plates 6a and 6b, it is possible to determine that the horizontal beam 4 and the gusset plates 6a and 6b are arranged in a straight line. Furthermore, when the ground is uneven, the gusset plate 6
It is also possible to support the cross beam 4 by inclining a and 6b so as to correspond to the inclines of the respective undulations.

[Effects of the Invention] As described above, according to the present invention, when the ground on the slope where the protection fence is to be installed is inclined in the left-right direction, the gusset plate is installed at the construction site so as to respond to the inclination angle. Since the horizontal beam and the gusset plate can be arranged in a straight line by tilting at, the appearance of the protective fence can be kept good, and the work of stretching the wire mesh can be easily performed. Since the angle of the gusset plate can be set arbitrarily at the construction site of the protective fence, the columns with the gusset plate can be mass-produced uniformly in advance as stock materials, which improves the production efficiency. There is an advantage that the cost is reduced.

[Brief description of drawings]

1 to 5 show an embodiment of the present invention, in which FIG. 1 is a front view of a protective fence, FIG. 2 is a front view of a column with a gusset plate attached, and FIG. 3 is a plan view of the same. FIG. 4 is a front view of the column with the gusset plate removed, FIG. 5 is a front view of the gusset plate, FIGS. 6 and 7 show a second embodiment of the present invention, and FIG. 6 is a pair of gusset plates. Is a front view of the column in a horizontal position, FIG. 7 is a front view of the column in which one of the gusset plates is tilted, FIGS. 8 to 12 show conventional techniques, and FIG. 8 is a protective fence. Of Fig. 9, Fig. 9 is a front view of a column with a gusset plate attached, Fig. 10 is a plan view of the same, Fig. 11 is a front view of a protective fence,
FIG. 12 is a front view of the column to which the gusset plate is attached. 1 ... Slope, 2 ... Post, 4 ... Horizontal beam, 5 ... Wire mesh, 6
…… Gusset plate.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Hiroshi Mochizuki, 1597, Nishigo-machi, Nagano City, Nagano Prefecture, Nagano Branch, Tokyo Steel Co., Ltd. (72) Yoshiro Yamazaki, 1597, Nishigo-machi, Nagano City, Nagano Prefecture, Tokyo Seizure Co., Ltd. Nagano Branch Office (56) References: Actual Development Sho 57-110112 (JP, U) Actual Public Sho 52-19403 (JP, Y2)

Claims (1)

(57) [Scope of utility model registration request] 1. A plurality of columns are erected along the left-right direction of a slope, a cross beam is erected between the upper ends of these columns, and a wire mesh is stretched between the columns. A gusset plate is provided at the upper end portion, a pair of arc-shaped guide holes are formed in the gusset plate, and a pair of bolts are inserted into the stanchions through these guide holes to attach the gusset plate rotatably in the vertical direction, A protective fence characterized by turning these gusset plates so that the angle corresponds to the inclination of the slope in the left-right direction, and then fixing both ends of the cross beams to these gusset plates.