JP6970958B2 - Cushioning member - Google Patents

Description

The present invention relates to a cushioning member, particularly a cushioning member capable of easily and reliably absorbing a tensile load.

For example, in order to prevent rockfall on roads and the like, it is common practice to install a rockfall guard fence on a slope.

An example of a rockfall guard fence will be described with reference to the drawings. Hereinafter, this rockfall guard fence is referred to as a conventional rockfall guard fence.

FIG. 6 is a schematic perspective view showing a conventional rockfall protection fence.

In FIG. 6, 11 is a support column constructed on the slope 12 at a predetermined interval, 13 is a mountain side wire stretched between the upper end portion of the support column 11 and the slope 12 on the mountain side (M), and 14 is a support column. The valley-side wire 15 stretched between the upper end of 11 and the slope 12 on the valley-side (V) is a wire mesh stretched between the columns 11 to catch rockfall.

According to the conventional rockfall protection fence described above, the rockfall can be prevented from falling on the road or the like as a result of being received by the wire mesh 15. At this time, since the support column 11 is pulled by the mountain side wire 13, there is no possibility that the support column 11 will fall to the valley side (V).

Further, when a rock fall from the slope 12 collides with the wire mesh 15, a tensile force acts on the mountain side wire 13, and the reaction causes the support column 11 to fall down to the mountain side (M), but the support column 11 has a force. Since it is pulled by the valley side wire 14, there is no possibility that the support column 11 will fall down to the mountain side (M).

According to the conventional rockfall guard fence, the wire mesh 15 stretched between the columns 11 can catch the rockfall, but the mountain side wire 13 is stretched between the slope 12 and the columns 11 without any stretch. Therefore, the impact force of the falling rock is directly applied to the wire mesh 15. As a result, the mesh of the wire mesh 15 may be greatly widened or the wire mesh 15 may be torn.

As described above, if the mesh of the wire mesh 15 is greatly widened by the first rockfall or the wire mesh 15 is torn, there is a problem that the subsequent rockfall cannot be dealt with.

Therefore, the inventors of the present application have earnestly studied to obtain a means capable of easily and surely suppressing the widening of the mesh of the wire mesh 15 and the tearing of the wire mesh 15 due to the impact force of falling rocks. ..

As a result, it was found that if a cushioning member capable of absorbing the tensile load of the mountain side wire 13 is attached to the mountain side wire 13, the impact force of the falling rock applied to the wire mesh 15 can be weakened.

As a result of further studies, if a cylindrical diamond-shaped wire mesh is used as a cushioning member capable of absorbing the tensile load of the mountain side wire 13, the tensile load of the mountain side wire 13 can be easily and surely absorbed. I got the knowledge that it can be done.

The present invention has been made based on the above findings, and is characterized by the following.

The invention according to claim 1, a plurality of waveforms wire bent di Guzagu diamond wire mesh woven so mesh is rhombic, along a direction perpendicular to the wave Tsukekata direction of the wave wire stretches those having a in fold bent tubular member, and a pair of mounting members attached to both axial ends of the tubular member, the particular features comprises a.

The invention according to claim 2 is the cushioning member according to claim 1, characterized in that a plurality of cylindrical members having a cylindrical shape are arranged concentrically.

The invention according to claim 3 is the cushioning member according to claim 1 or 2 , characterized in that it is attached between two wires.

According to the present invention, a rhombic wire mesh composed of a plurality of wires bent in a zigzag shape, which is woven so that the mesh becomes a rhombus, is formed along a direction orthogonal to the axis connecting the intersections of the wires in the wavy direction. When a tensile load is applied in the direction of the axis, the tensile force acts between the intersections of the adjacent wire rods, and as a result, the tensile load can be easily and surely absorbed.

It is a partial perspective view which shows the cushioning member of this invention. It is an enlarged view of the fixing member part of FIG. It is an enlarged view of the rhombic wire mesh part of FIG. It is a perspective view which shows another example of the cushioning member of this invention. It is a perspective view which shows the conventional rockfall protection fence which attached the cushioning member of this invention. It is a perspective view which shows the rockfall guard fence.

An embodiment of the cushioning member of the present invention will be described with reference to the drawings.

1 is a partial perspective view showing a cushioning member of the present invention, FIG. 2 is an enlarged view of a fixed member portion of FIG. 1, and FIG. 3 is an enlarged view of a diamond-shaped wire mesh portion of FIG.

As shown in FIGS. 1 to 3, in the cushioning member of the present invention, a rhombic wire mesh 2 composed of a plurality of wire rods 1 bent in a zigzag shape, which is woven so as to form a diamond shape, is corrugated with the wire rod 1. It is configured to be bent into a cylindrical shape along a direction orthogonal to the axis 4 connecting the intersections 3 of the directions. The wavy direction of the wire rod 1 is indicated by A in FIG.

According to the cushioning member of the present invention described above, when a tensile load is applied in the direction of the axis 4, a tensile force acts between the intersections 3 of the adjacent wire rods 1. As a result, if the cushioning member of the present invention is attached to the mountain side wire 13 of the conventional rockfall protection fence described above via the fixing member 5 as shown in FIG. 5, for example, the impact force of the rockfall causes the mountain side wire 13 to be attached. The tensile load is reliably absorbed and reduced by the cushioning member of the present invention.

As shown in FIGS. 1 and 2, the fixing member 5 is a pipe 6 inserted into the end of the diamond-shaped wire mesh 2 bent into a cylindrical shape, and all intersections separated from the end of the diamond-shaped wire mesh 2 by two or more. A tap 7 formed in the pipe 6 at the position of the portion 3, a ring 8 having an opening 9 arranged along the circumference of the tap 7, and a bolt 10 screwed into the tap 7 through the opening 9 of the ring 8. It consists of. The pipe 6 may be a solid rod-shaped body.

Since the fixing structure may be a structure in which the end portion of the diamond-shaped wire mesh 2 is fixed to the pipe 6, for example, a protrusion engaging with the intersection 3 may be formed on the outer surface of the pipe 6. In the example shown in FIG. 1, the fixed structure is provided in one stage, but a plurality of stages may be provided.

The ring 8 is formed in half and is connected in a ring shape by bolts (not shown). Further, the ring 8 may be passed through the diamond-shaped wire mesh 2.

According to the fixing member 5 configured as described above, the ring 8 is arranged along the circumference of the tap 7, and the bolt 10 is screwed into the tap 7 through the opening 9 of the ring 8 to fix the ring 8 to the cylinder. The diamond-shaped wire mesh 2 bent into a shape is fixed to the fixing member 5.

As a result, the impact force of the falling rock applied to the wire mesh 15 is absorbed by the diamond-shaped wire mesh 2 and weakened. can do.

If it is necessary to further increase the cushioning effect, as shown in FIG. 4, a plurality of (two in this example) rhombic wire mesh 2 may be arranged concentrically. In this case, the loop shape of the diamond-shaped wire mesh 2 is not limited to the cylindrical shape. Further, the cushioning effect can be adjusted by changing the material of the wire rod 1.

As described above, according to the present invention, the rhombic wire mesh 2 composed of a plurality of wire rods 1 bent in a zigzag shape, which is knitted so that the mesh becomes a rhombus shape, is formed at the intersection 3 of the wire rods 1 in the wavy direction. When a tensile load is applied in the direction of the axis 4 by bending in a loop shape along a direction orthogonal to the axis 4 connecting the two, a tensile force acts between the intersections 3 of the adjacent wire rods 1.

As a result, by attaching the cushioning member of the present invention in the middle of the mountain side wire 13 of the conventional rockfall protection fence described above, the impact force of the rockfall applied to the wire mesh 15 can be weakened, so that the impact force of the rockfall can weaken the wire mesh 15. It is possible to easily and surely suppress the widening of the eyes and the tearing of the wire mesh 15.

The shape of the rhombic wire mesh 2 is not limited to a cylindrical shape as long as it is a loop shape, and may be a square tubular shape, an elliptical tubular shape, or the like.

1: Wire material 2: Rhombus wire mesh 3: Crossing part 4: Axis wire 5: Fixing member 6: Pipe 7: Tap 8: Ring 9: Opening 10: Bolt 11: Strut 12: Slope 13: Mountain side wire 14: Valley side wire 15: Wire mesh

Claims (3)

A plurality of waveform wires bent in di Guzagu diamond wire mesh woven so mesh is rhombic, and in fold bent tubular member along a direction perpendicular to the wave Tsukekata direction of the wave wire stretches,
A pair of mounting members mounted on both ends of the tubular member in the axial direction,
Cushioning member, characterized in that it comprises a. The cushioning member according to claim 1.
A cushioning member characterized in that a plurality of cylindrical members are arranged concentrically. The cushioning member according to claim 1 or 2.
A cushioning member characterized in that it is attached between two wires.

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