JP2869520B2 - Protective fence for falling rocks and falling snow - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a protection fence for falling rocks, falling snow, etc., which is constructed on a slope or the like where there is a risk of falling rocks or falling snow (avalanches), buffers and receives and protects falling rocks or falling snow. .

[0002]

2. Description of the Related Art Generally, a terminal support with support and an intermediate support are installed on a slope such as a falling rock or a snowfall (an avalanche) with a concrete foundation or the like at right and left intervals, and at least a plurality of support posts are provided in front of each intermediate support. This cable is attached and fixed with U bolts, etc., and is stretched in multiple stages with vertical intervals, and if necessary, wire mesh is stretched in the cable group, so that it has excellent toughness and moderate elongation and elasticity It is constructed as a protective fence against falling rocks and falling snow to prevent falling into roads and railroads by elastically buffering and catching falling rocks and falling snow with a cable group or wire mesh.

[0003] In the above-mentioned protective fence against falling rocks and falling snow, the fence is constructed by bending the fence in the front-rear direction (plan view) or in the vertical direction (front view) so as to correspond to a slope, a road, a railroad or the like. Has been developed and proposed a structure in which a guide tube is fitted to the wave of the intermediate column in these inflection portions of the fences, and a cable is inserted into this guide tube to bend in the front-rear direction or in the up-down direction and stretched. I have.

[0004]

The conventional protection fence for falling rocks and falling snow has a cable or a wire mesh attached to the front surface of the intermediate support with a U-bolt or the like as described above. The load received by the wire mesh is directly applied to the intermediate support, and especially at the intermediate support at the inflection part of the fence, the load is concentrated and the support function is reduced. Also, in the front and rear fence inflections, the cable is easily damaged locally at the front edge of the intermediate support. When the cable is inserted through the guide tube provided on the wave of the intermediate support, the damage is reduced, but the wire mesh separates from the cable in the vicinity of the intermediate support, the supporting force is reduced, and the buffer receiving performance is significantly reduced. Issues.

SUMMARY OF THE INVENTION The present invention has been developed to solve the above-mentioned problem. The object of the present invention is to arrange a fixed washer such as a U-bolt or a nut by disposing a curved washer on the front surface of an intermediate support. An object of the present invention is to provide a protective fence against falling rocks and falling snow, which has improved cushioning performance against falling rocks and falling snow and has improved pillar performance and reliability by mounting and attaching a cable.

[0006]

SUMMARY OF THE INVENTION According to the present invention, a plurality of cables are stretched up and down or a wire mesh is stretched over a terminal support and an intermediate support, which are installed at intervals.
In a protective fence against falling snow, etc., a curved washer having a cross-convex shape is arranged at least in front of the intermediate support at the inflection part of the fence, a fixture such as a U-bolt or a nut is assembled to the curved washer and attached to the support. The cable is attached to the curved front surface of the cable with a fixing bracket, so that the buffer support performance of the curved washer is added to the buffer receiving performance of the cable group and wire mesh, and the cable etc. is buffered and received by the curved front surface of the U bolt and the curved washer. In addition, the cable can be easily bent in the vertical direction or the front and rear direction and smoothly guided to effectively reduce damage to the cable, etc. It has been reduced to improve the support function and reliability.

Further, the front of the U-bolt of the fixing bracket is obliquely arranged in a front view so as to correspond to the vertical inflection direction of the cable in the fence inflection portion, and the U-bolt is assembled to a curved washer to form an intermediate support. Attaching makes it easy to arrange curved washers, and also effectively buffers and supports the cables and wire mesh at the inflection part of the fence, and guides the cables by smoothly bending them vertically or in the front-rear direction. By effectively reducing local damage to the cable, the performance of receiving shocks such as falling rocks and falling snow and the load on the intermediate support are reduced to further enhance the support function and reliability.

[0008]

1 and 2 show an embodiment of the present invention. In the figure, reference numeral 1 denotes an intermediate support, 1a denotes an intermediate support at an inflection portion of a fence, 2 denotes a concrete foundation provided on a slope, etc., 3 denotes a terminal support (not shown) or a plurality of steps installed on the mountain side of the intermediate support with vertical intervals. 4 is a normal U-bolt / nut which attached the cable to the intermediate support 1, 5 is a wire mesh which is stretched to a cable group with a fixing metal 5a or a rope, 6 is a rope which has a wire mesh stretched, 11 is an intermediate support. A curved washer having a transversely convex curved shape disposed on the front surface of the curved washer;
1b is a pair of bolt holes for assembling a fixing bracket, 12 is a U-bolt 12a assembled to a curved washer and attached to an intermediate support.
And a fixing bracket made of a nut 12b and the like.

In the embodiment shown in the drawings, a plurality of cables 3 are stretched up and down or a wire net 5 is stretched over a terminal support (not shown) and intermediate supports 1 and 1a which are installed at intervals. In a protective fence against falling snow, etc., a curved washer 11 having a transversely convex curve is disposed at least on the intermediate support 1a of the fence inflection part or on another intermediate support 1, and a fixing fitting 12 such as a U-bolt or a nut is attached to the curved washer 11. Intermediate column 1
a or rocker 1 and the cable 3 is attached to the curved front surface 11a of the curved washer 11 with the fixing bracket 12.
It is a protective fence for falling snow.

In the above-mentioned protective fence against falling rocks and falling snow, the front portion of the U-bolt 12a of the fixing bracket 12 is obliquely arranged in a front view so as to correspond to the vertical inflection direction of the cable in the inflection portion of the fence. The U-bolt 12a is assembled to the curved washer 11 and attached to the intermediate support 1a to form a protective fence against falling rocks and falling snow.

More specifically, the terminal support (with support, not shown) and the intermediate support 1, 1a are preferably H
Shaped steel or various shaped steels, steel pipes, or the like are applied, and the bases thereof are buried in a concrete foundation 2 provided on a slope or the like where there is a risk of falling rocks or falling snow, and are placed at appropriate intervals from one another.

The cable 3 is connected to a terminal post using, for example, a cable end rod connected to an end of the cable 3 by applying various twisted wire ropes corresponding to a receiving load such as falling rocks or falling snow (not shown). The cable 3 is attached to the intermediate support 1 formed on a straight fence with a normal U-bolt / nut 4 or a fixed washer 12 such as a curved washer 11 and a U-bolt / nut, if necessary. ) Alternatively, the intermediate support 1a of the fence inflection portion in which the direction of the fence is bent in the front-rear direction (in plan view) is attached to the cable 3 with a curved washer 11 and a fixing bracket 12 such as a U-bolt or a nut. 3 is arranged in a plurality of stages with appropriate vertical spacing, and due to its excellent toughness, moderate extensibility, elasticity, etc., falling rocks and falling snow (avalanches)
Buffer and receive.

The wire mesh 5 is made of a structural material having an appropriate mesh size and a strength and elasticity corresponding to a receiving load such as falling rocks and falling snow (avalanches). It is attached and stretched to the cable 3 group with the nut 4 or the fixing bracket 12 and the like, and the rock fall and snow fall are buffered and received together with the cable 3 group.

Further, the curved washer 11 is formed of a metal material, a relatively high-strength synthetic resin material, or the like into a transversely convex curved shape, and receives the cable 3 at the curved front surface 11a. The fixing bracket 12 has a pair of bolt holes 12b through which both legs of the U-bolt 12a are inserted. The fixing bracket 12 is attached to the front side (mountain side) of the intermediate pillars 1a, 1 and easily arranged. The curved front surface 11a buffers the cable 3 so as to further enhance the buffering and supporting performance of the receiving cable 3 and the wire mesh 5, and the intermediate support 1,
The load and the like on 1a are reduced to further enhance the support function and reliability.

In the middle support 1a of the fence inflection part, FIG.
A, a pair of bolt holes 12b is formed in the curved washer 11 as shown in FIG.
Are provided obliquely in front view so as to correspond to the vertical inflection direction of the cable in the fence inflection portion. That is, the fixing bracket 1
The front part of the U bolt 12a is obliquely arranged in front view so as to correspond to the vertical inflection direction of the cable 3 in the inflection part of the fence. If the right side of the cable 3 is bent downward, the front portion of the U bolt 12a is obliquely arranged as shown in the figure, and if the cable 3 is bent upward, the bolt hole 12b of the curved washer 11 is positioned at a different position. And the front part of the fixed U bolt 12a is obliquely arranged in the opposite direction to the illustration (not shown), and the U bolt 12a is attached to the curved washer 11 and attached to the intermediate support 1a. The inflection guide is smooth. When applying to other intermediate supports 1,
The two legs of the U-bolt 12a need not be obliquely arranged, and may be arranged orthogonal to the cable 3. This curved metal fitting 11 is provided with an intermediate support 1,
The curved front surface 11a receives the cable 3 easily and has a moderate elasticity.
And effectively reduce the load on the intermediate supports 1 and 1a, enhance the support function and reliability, and facilitate bending of the cable 3 in the vertical and front-rear directions. The oblique arrangement further facilitates inflection in the vertical direction and prevents local damage to the cable 3.

Further, the fixing bracket 12 has a substantially U-shaped U shape.
Bolt 12a and both legs of U-bolt are connected to middle support 1,1a.
A nut 12b and a washer (symbol is omitted) that are fastened and fixed to the front surface of the U-bolt 12a.
A nut 12b is attached to a pair of bolt holes 11b and a pair of bolt holes (not shown) provided in the intermediate pillars 1a and 1 respectively.
To attach the cable 3 to the curved front surface 11a of the curved washer 11 or the like.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The illustrated embodiment is an embodiment in which the present invention is applied to an intermediate support 1a of a fence inflection portion, and a terminal support (not shown) is provided on a concrete foundation 2 provided on a slope or the like where there is a risk of falling rocks or falling snow.
And the intermediate posts 1, 1a are installed at appropriate intervals, and a plurality of cables 3 are connected to the terminal posts by cable ends rods and the like. Attached to the front surface (mountain side) by bolts 4 and the like, and in the middle support 1a of the fence inflection portion where the fence changes in the front-back direction or the vertical direction, a curved washer 11 is applied to the front surface of the intermediate support, and A bolt 12a is fitted to the cable 3, and its legs are inserted into both bolt holes 11b of the curved washer 11 and bolt holes (not shown) of the intermediate support 1a, and nuts 12b are fitted to both legs and tightened. The cables 3 are attached to the bending advance 11a, and each cable 3 is stretched by applying an appropriate tension thereto.
Is constructed as a protective fence against falling rocks, falling snow, etc., which is stretched over the entire surface of the cable 3 group with the rope 6, the fixing fittings 4, 5a, the U bolt 12a of the fixing fitting 12, and the like. Also, in the intermediate support 1 constructed in a straight line as required, a cable 3 or a wire mesh 5 is provided on the front surface of the intermediate support 1 with a curved washer 1.
It is constructed as a protection fence against falling rocks, falling snow, and the like, which is similarly attached by 1 and the fixing bracket 12. In addition, intermediate support 1 as necessary
Also, the curved washer 11 and the U-bolt 12
Attach each cable 3 by a or the like.

In the above-mentioned protective fence against falling rocks and falling snow, a group of three cables or a wire mesh 5 stretched on the terminal support and the intermediate support 1, 1a in a plurality of upper and lower stages have excellent toughness.
Rock fall and snow fall (avalanche) are elastically received with moderate elasticity. In addition, the curved washer 11 arranged on the front surface of the intermediate support 1a of the fence inflection portion or another intermediate support 1 is a U-bolt 1
With the curved front surface 11a together with 2a, the cable 3 and the wire mesh 5 are supported with an appropriate elasticity to further buffer the cable or wire mesh, further improve the buffer receiving performance of falling rocks and falling snow (avalanches), and fence inflection. In the part, the cable 3 is easily bent in the front-rear direction or the vertical direction to guide smoothly, to significantly reduce the damage of the cable, etc., and to improve the function and reliability of the intermediate column of the fence bending part. I have.

Although the embodiment shown in the drawings has a structure in which a wire mesh is stretched together with a cable group on a column group, it is also possible to adopt a structure in which only the column group is used for protection by increasing the number of cables. . Further, fixing fittings such as curved washers and U bolts and nuts are applied not only to the inflection part of the fence but also to other intermediate supports as necessary.

[0020]

According to the present invention, as described above, a plurality of cables are stretched at upper and lower intervals on a terminal support and an intermediate support which are erected at intervals and a wire mesh is stretched to protect falling rocks and falling snow. At the fence, a transversely convex curved washer is arranged on the front surface of the intermediate support or another intermediate support, and a fixture such as a U-bolt or a nut is assembled to the curved washer and attached to the support. By attaching the cable with the above-mentioned fixing bracket, the cable mesh is supported by the curved front surface of the curved washer, and the cushioning performance of the cable group and the wire mesh is further enhanced by the appropriate elasticity, and the cable is attached to the intermediate support. The load is significantly reduced, and furthermore, the inflection of the cable at the inflection portion of the fence is facilitated and smoothly guided to significantly reduce the damage.

Further, the front of the U-bolt of the fixing bracket is obliquely arranged in a front view so as to correspond to the vertical inflection direction of the cable in the fence inflection portion, and the U-bolt is assembled to the curved washer to form an intermediate support. Due to the mounting, the cable is easily bent in the vertical direction, and the cable of the fence inflection portion is smoothly guided by the curved front surface of the U-bolt and the curved washer, effectively reducing local damage of the cable. As a result, the performance of cushioning and supporting pillars and reliability of falling rocks and falling snow have been remarkably improved.

[Brief description of the drawings]

FIG. 1 is an enlarged front view (A), a plan view (B), and a side view (C) of a portion X in FIG. 2A showing an embodiment of the present invention.

FIG. 2 is a front view (A), a plan view (B), and a side view (C) of an intermediate column of an intermediate portion of a protective fence for falling rocks and falling snow.
It is.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1, 1a Intermediate support | pillar 3 Cable 5 Wire mesh 11 Curved washer 11a Curved front surface 12 Fixture 12a U bolt (fixture)

Claims (2)

(57) [Claims] 1. A fence in which a plurality of cables are vertically stretched and stretched or a wire mesh is stretched between a terminal pillar and an intermediate pillar, which are installed at intervals, and at least a fence inflection portion is provided. A curved washer having a cross-convex curve is arranged on the front surface of the intermediate post, and a fixing bracket such as a U-bolt or a nut is assembled to the curved washer and attached to the intermediate post, and a cable is mounted on the curved front surface of the curved washer with the fixing bracket. A protective fence against falling rocks and falling snow, characterized by being attached. 2. The protection fence for falling rocks and falling snow according to claim 1, wherein a front portion of the U-bolt of the fixing bracket is obliquely arranged in a front view so as to correspond to a vertical inflection direction of a cable in the inflection portion of the fence. A fence against falling rocks and falling snow, characterized in that the U-bolt is attached to a curved washer and attached to an intermediate support.