KR200287791Y1 - A protective fence for falling rock with shock absorber - Google Patents

Abstract

The present invention relates to a rockfall prevention fence that is installed in the rock cutout section of the road, and in particular, even in the event of a sudden rockfall can absorb the impact load of the rockfall by the elasticity of the shock absorber 10 and the end fastener 30 The breakage of the wire rope 6 and the fasteners does not occur frequently, and the small impact applied to the wire rope 6 is absorbed without being transmitted to the props 3 and 4, and the wire rope 6 is shorted by the span. By connecting with the shock absorber 10, it is possible to replace by the span of the wire rope 6 cut at the time of cutting the wire rope 6, and also, by removing the falling rock inside the fence 1 to prevent falling rock wire 6 ) Is easy to remove by disassembling / assembling, and considering that the press work for integrating the look 12 at the end of the wire rope 6 is restricted in the field environment, the fixing washer 14a of the shock absorber 10 is removed. (14b) spring Consists of washer 15 and look-locked washer 16 for efficient on-site assembly of shock absorber 10 and the possibility of falling rocks on the road due to gap of wire rope 6 by auxiliary support 5 The present invention relates to a fence for rockfall prevention, which is provided with a shock absorber which is effective in dispersing the impact load applied to some wire ropes 6 and the wire ropes 6 as a whole.

Description

A protective fence for falling rock with shock absorber}

The present invention relates to a rockfall prevention fence, in particular in the rockfall prevention fence consisting of a plurality of struts installed in the rock section of the road and a plurality of wire ropes connecting the struts, spanning the wire rope of each row 단락) Shorted by each wire, each wire rope is connected by a spring-loaded shock absorber, and both ends of the connected wire rope are fastened to the end circumference so as to be supported by a compression spring, thereby alleviating the impact of falling rocks when the rock falls. The present invention relates to a fence for rockfall prevention which is provided with a shock absorber to prevent the inflow of the road and to replace the wire rope for each span.

In general, a rockfall incision section of the road is installed rockfall prevention fence, such as rockfall prevention fence, rockfall prevention net, retaining wall, bar of the conventional rockfall prevention fence will be described in detail with reference to FIG.

1 is a front view showing a state of use of the conventional rockfall prevention fence.

Looking at the configuration of the conventional rockfall prevention fence 100, the end column 103 (one side not shown) is installed on both sides of the rock cutting section, respectively, the span column 104 at predetermined intervals between the end portion 103 of the both sides. ) Is installed, and a plurality of rows of wire ropes 106 having fasteners 120 formed at both ends thereof penetrate the span column 104 in the transverse direction to both end column 103, and the fence for preventing rockfall 100 The wire mesh 107 is bound between all the sections.

However, in the case of the conventional rockfall prevention fence 100 as described above is not provided with a shock absorbing means against sudden impact when a rockfall occurs, the breakage of the wire rope 106 and the fastener 120 frequently occurs, the wire rope ( The small impact applied to the 106 is also transmitted to the struts 103 and 104, and these impact loads accumulate as fatigue loads in the struts 103 and 104 and the landfill portion, causing a drop in bearing capacity. Since the 106 is formed integrally, there is a problem in that it is not possible to replace the parts by the span when cutting the wire rope 106, and there is also a problem that it is difficult to remove the rockfall inside the fence.

On the other hand, in order to solve the above problems, the applicant for the utility model has previously filed a method (patent application No. 10-2000-0060141) to elasticize using a spring on the wire rope of the rockfall prevention fence, the utility model application Is devised to complement and apply the prior application invention.

The purpose of the present invention for solving the problems as described above, the breakage of the wire rope and fasteners do not frequently occur even in a sudden impact during the occurrence of rockfall, small impact applied to the wire rope can be absorbed without being transmitted to the prop Another object of the present invention is to provide a configuration of a rockfall prevention fence equipped with a shock absorber that is easy to remove the falling rocks inside the fence as well as possible replacement of each section when cutting the wire rope.

1 is a front view showing a state of use of the conventional rockfall prevention fence

Figure 2 is a front view of the rock fall prevention fence equipped with a shock absorber according to the present invention

Figure 3a is an exploded perspective view of the shock absorber according to an embodiment of the present invention

Figure 3b is a schematic diagram showing the operating state of the shock absorber according to an embodiment of the present invention

Figure 3c is an exploded perspective view showing a fixing washer according to an embodiment of the present invention

Figure 4 is a partial perspective view showing the end fastener according to an embodiment of the present invention

* Description of the symbols for the main parts of the drawings *

1: Rockfall prevention fence 3: End holding 4: Span holding

5: supporting column 6: wire rope 7: wire mesh

8a, 8b: U bolt 10: shock absorber 12: lock

14a, 14b: fixed washer 15: spring support washer 16: lock locking washer

17: cutting groove 18, 38: compression spring 19, 22: bolt

20: Case 24: Tightening screw 30: End fastener

32: fastening rod 34: recess groove 35: spring support washer

36: male part 39: nut

With reference to the drawings in the configuration of the rockfall prevention fence equipped with a shock absorber for solving the above problems will be described in detail.

Figure 2 is a front view of the fall prevention fence equipped with a shock absorber according to the present invention, Figure 3a is an exploded perspective view of the shock absorber according to an embodiment of the present invention, Figure 3b is the action of the shock absorber according to an embodiment of the present invention 3C is an exploded perspective view showing a fixing washer according to an embodiment of the present invention, and FIG. 4 is a partial perspective view showing an end fastener according to an embodiment of the present invention.

First, referring to FIG. 2, the configuration of the rockfall prevention fence provided with the shock absorber according to the embodiment of the present invention includes an end support (3; one side not shown) installed at both ends of a rock incision section of the road, and the end support. (3) a plurality of span holders (4) which are installed at predetermined intervals between the (3), and the span is short-circuited by span across the span holder (4) connected by the buffer device (10), the connected both ends of both ends A plurality of rows of wire ropes 6 fixed to the end holders 3 as end fasteners 30 and between the respective span holders 4 are provided to maintain the spacing of the wire ropes 6. An auxiliary column 5 to be fastened with (6) is configured to prevent the falling rock fence 1, the wire mesh 7 (some parts) of the whole of the falling rock fence 1 is bound to the wire rope (6).

On the other hand, the buffer device 10 is fastened to the wire rope 6 for each span (徑 間) can be installed one by one in several spans, as shown in Figure 2, depending on the conditions of the installation environment, the shock absorber The wire rope 6 of the portion A which is in contact with the span column 4 without 10 is installed is fixed to the span column 4 by the U bolt 8a, and the wire rope 6 and the auxiliary column are fixed. The fastening of (5) is also fixed by fastening with the U bolt (8b).

Looking at the configuration of the shock absorber 10 with reference to Figures 3a to 3c in more detail, by inserting a hollow pipe-shaped lock (12) at the end of the wire rope (6) shorted by the span for high-pressure press work The end of the wire rope 6 to which the locks 12 introduced from both sides of the span holder 4 are fastened, respectively, by one side of the pair of fixed washers 14a and 14b. 14b) to be fastened to the other side washer 14b or 14a, and more specifically, through the hollow part of the ring-shaped spring support washer 15 to be fastened with the spring support washer 15 and bolt 19. One side end of the lock 12 is fastened to one cutout 17 of the lock locking washer 16, and a compression spring 18 is spring-supported between the pair of fixing washers 14a and 14b. It is formed to be supported on the inner side of the washer (15).

Meanwhile, the lock 12 and the wire rope 6 are preferably press-pressed to have a binding force of at least the tensile strength of the wire rope 6, and a pair of cutouts 17 are formed in the lock catch washer 16. The width of the cutout 17 is narrower than the outer diameter of the lock 12.

In addition, the shock absorber 10 configured as described above is fixed to one side of the span column 4 by the cylindrical case 20, and the shock absorber 10 case 20 divided in the longitudinal direction is provided. The one side case 20a is fastened and fastened to the span column 4 by the bolt 22, and the other case 20b is integrated with the one side case 20a by the fastening screw 24 by receiving the shock absorber 10. In addition, the case 20 of the shock absorber 10 may be selectively filled with rust oil or lubricating oil such as grease.

On the other hand, the wire rope 6 in contact with the span column 4 without the shock absorber 10 is fixed to the span column 4 by the U bolt (8a).

Looking at the structure of the end fastener 30 in more detail with reference to Figure 4, the fastening rod 32 is inserted into the insertion hole (3a) formed in the end holder 3, one side of the fastening rod 32 At one end, a concave groove 34 is formed to insert one end of the wire rope 6 connected by the shock absorber 10 to be integrated by press press to have a binding force of more than the tensile strength of the wire rope 6. A male screw portion 36 is formed on the outer circumferential surface of the other end of the fastening rod 32, and a compression spring 38 is inserted into the outer circumference thereof, and one end of the compression spring 38 is supported by the end support 3. The other end is supported by a spring support washer 35, and the spring support washer 35 is fixed by a nut 39 that is fastened to the male screw portion 36 of the fastening rod 32.

On the other hand, the auxiliary column 5 shown in Fig. 2 is plate-like fastening with the wire rope 6 and the U bolt (8b) in each row, and is not buried in the ground.

Looking at the effect in accordance with an embodiment of the present invention as described above in detail, unlike the wire rope of the conventional rockfall prevention fence to maintain the tension state during the occurrence of rockfall primarily buffer device 10 and the end fastener 30 By absorbing the impact load of the rockfall by the elasticity of the) can be relatively reduced the cutting of the wire rope 6, in the case of a small impact applied to the wire rope (6), the shock absorber 10 and the end fastener 30 The absorbing force is absorbed by its own elastic force so that the fatigue load does not accumulate in the support (3) and the landfill, so that the bearing force does not decrease, and the wire rope (6) is shorted by the span and connected as a shock absorber (10). Thus, the cutting of the wire rope 6 cut at the time of cutting the wire rope 6 is possible, and the disassembly / assembly of the wire rope 6 at the time of removing the falling rock inside the fence 1 for preventing rockfall Easy to remove

On the other hand, the fixing washer 14a, 14b of the shock absorber 10 has a structure in which the spring support washer 15 and the lock catch washer 16 are fastened, and the lock 12 is integrated at the end of the wire rope 6. In view of the fact that the press work to be affected by the site environment is large, the incision of the lock catch washer 16 after the wire rope 6 in which the lock 12 is integrated passes through the hollow part of the spring support washer 15. The lock 12 of the wire rope 6 is inserted into (17), and then the spring support washer 15 and the lock support washer 17 are fastened so that the fastening is efficient.

In addition, the auxiliary column 5 is a means for maintaining the spacing of the wire rope 6, while the spacing of the wire rope 6 is widened to exclude the possibility that falling rocks can enter the road, and also to some of the wire rope 6 The impact load applied is distributed throughout the wire rope 6.

According to the embodiment of the present invention as described above, the impact load of the rockfall can be absorbed primarily by the elasticity of the shock absorber and the end fastener even in the sudden impact when the rockfall occurs, so that the breakage of the wire rope and the fastener does not occur frequently. In addition, the small impact applied to the wire rope can be absorbed without being transmitted to the props, and the wire rope is shorted by the span and connected by a shock absorber so that the wire rope can be replaced by the span when cutting the wire rope. It is easy to remove by disassembling / assembling the wire rope by span when removing rockfall inside the fence for rockfall prevention.The press washer that integrates the lock at the end of the wire rope consists of a spring washer and a lock washer. Considering that it is affected by this site environment, the on-site assembly of the shock absorber Efficiently, and by the auxiliary holding beoleojyeo the distance of wire ropes and also has the effect of excluding the possibility of rock falls the road can be introduced as well as distribute the impact load applied to a portion of wire rope in the wire rope whole.

Claims (3)

End end portions 3, which are provided at both sides of the rock incision section and having insertion holes 3a formed therein, a plurality of span holders 4 provided between the end supports 3, and the span holders 4, respectively. In the rockfall prevention fence is fastened to the end support 3 and composed of a wire rope (6) provided with a buffer means; The wire rope 6 is shorted by the span, and the end of the lock (12) is inserted into the hollow pipe-like lock 12 is integrated by a high-pressure press work, the lock 12 is introduced from each side of the span column 4, respectively Ends of the wire ropes 6 to which the wire rope 6 is connected, respectively, penetrate through one of the fixing washers 14a or 14b of the pair of opposite fixing washers 14a and 14b, and then the spring support washers of the other fixing washers 14b or 14a. The lock lock lock side end portion is fastened to one side cutout portion 17 of the lock catch washer 16 fastened by the spring support washer 15 and the bolt 19 through the hollow portion of the lock holder. A rockfall prevention fence provided with a shock absorber, characterized in that the compression spring (18) between the pair of fixing washers (14a) (14b) is configured to be supported on the inner side of the spring support washer (15). According to claim 1, The fastening rod 32 is inserted into the insertion hole (3a) formed in the end support 3, and one side end of the fastening rod 32 to form a recess groove 34 to form a wire rope ( 6) After inserting one end of the end is integrated by press pressure, the outer end surface of the other end of the fastening rod 32 is formed with a male thread portion 36 and the compression spring 38 is inserted into the outer circumference of the compression spring One end of the support 38 is supported by the end support 3 and the other end is supported by the spring support washer 35, and the spring support washer 35 is fastened to the male screw portion 36 of the fastening rod 32. Rockfall prevention fence provided with a shock absorber characterized in that the position is fixed by the nut (39). The fence of claim 1, wherein the plate-shaped auxiliary column (5) is fastened with wire ropes (6) and U bolts (8b) in each row.