JP3954414B2 - Protective body using net - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a protective body using a net having a surface for receiving snow, rock fall, wind, and the like, and a protective structure using a net for preventing rock fall.
[0002]
[Prior art]
Conventionally, a protective fence is known which is constructed on a slope of a mountainside and receives falling rocks and snow, etc., and prevents falling and inflowing onto a road or the like. For example, JP-A-7-197423 Proposed protection fences such as falling rocks with a perforated hole at an interval in the slope, and pipe struts built in the perforated hole side by side, and a multi-stage cable and wire mesh stretched to each pipe strut Wire mesh is used for protection.
[0003]
Further, in connection with a net used for a protective surface, Japanese Patent Application Laid-Open No. 2000-273828 discloses that a protective net is made of steel or a rigid wire such as a wire attached in parallel, or a net knitted on a net with a rigid wire. It is described that it includes various known nets such as a combination of a horizontal rope material and a wire net (Japanese Patent Publication No. 0011).
[0004]
As in the above-described prior art, a protective body using this type of net protects roads and the like from falling rocks by combining a wire rope and a steel net.
[0005]
However, in the case of using a steel wire rope or net, since the member itself is heavy, a heavy machine for installation is required, and there is a problem that the construction range is limited, the construction period is prolonged, and the construction cost is increased. And since the protection body provided for rock fall protection is often provided on the slope of a mountain unsuitable for heavy machinery use, the member is heavy in the construction of providing the protection body on such a mountain slope. And the carrying-in operation | work becomes complicated and there exists a problem inferior to workability.
[0006]
By the way, when performing various constructions in mountainous areas, a temporary protective body may be required only during the construction period, and it may be necessary to remove the protective body after the construction is completed. On the other hand, with conventional protective fences, when repairs are necessary due to falling rocks, etc., or when the service life has passed, repairs and replacement of nets etc. are performed, and they are used for temporary construction. Is unsuitable.
[0007]
The object of the present invention is to provide a protective body and a protective structure using a net that is excellent in workability, enables a simple construction method, enables low-cost construction, and allows easy replacement of the net. The object is to provide a protective body and a protective structure using a net with excellent functions.
[0008]
[Means for Solving the Problems]
The invention according to claim 1, a surface constituted by the synthetic resin net, comprising a mounting means for installing the network to the installation location, the network in guards a knotless net, the installation location of the side walls on both sides a swamp with, the network forms a substantially rectangular shape, set only a ring member in this network, the installation means detachably connected to the lock bolt and the locking bolt fixed to the side wall to the annulus It consists of a linking ring .
[0009]
According to the configuration of the first aspect, the net and the installation means are carried into the installation place, and the net is installed by the installation means to form the protective body. By using a synthetic resin as a net, the weight is reduced, and a large heavy machine such as a crane is not necessary for construction transportation, and a protective body can be installed in a place where construction is restricted by the topography. Further, since the synthetic resin net has flexibility, it can be made compact by winding it at the time of carrying in, and at the same time, the workability at the site is also improved.
[0010]
[0011]
Further, according to the first aspect, the wire that constitutes the network, because they are straight formed without tied at the intersection, when a force is applied to the network, because the force is dispersed throughout the network, high A shock absorbing function is obtained. Also, since there are no nodules, it is lighter, and compact when stacked, folded or rolled.
[0012]
And in the knot network, when the wire is tied at the intersection, the tensile force concentrates on the wire at the intersection, so that part tends to be weak, but the nodule network does not have such a problem, and a high shock absorbing function is obtained. It is done.
[0013]
[0014]
According to the first aspect of the present invention, the net and the setting means are carried into the site, and the protective body is installed by fixing both sides of the net to the side walls by the setting means. This protective body is inexpensive and can be easily constructed, and is a protective body against rockfalls, avalanches, winds, etc. in the swamp. In particular, the construction cost can be reduced by using the side walls.
[0015]
According to a second aspect of the present invention, the installation means includes struts erected at intervals, and the net is stretched between the struts.
[0016]
According to the second aspect of the present invention, the net and the setting means are carried into the site, the column is erected, and the protective body is installed by fixing the net to the column. This protective body is inexpensive and can be easily constructed, and is a protective body against falling rocks and avalanches.
[0017]
Further, the invention of claim 3, and a surface made of a synthetic resin net, comprising a mounting means for installing the network to the installation site, the guards said network is a knotless net, said mounting means includes trees Fixing means for fixing the mesh in between, the mesh having a substantially rectangular shape, the mesh is provided with a ring body, the fixing means is a mounting band with a connecting ring, the mounting band is It is wound around a standing tree and fixed, and the connecting ring is connected to the ring body .
[0018]
According to the third aspect of the present invention, the net and the setting means are carried into the site, and the protective body is installed by fixing the net to the standing tree by the installation means. This protective body is inexpensive and can be easily constructed, and is a protective body against falling rocks, avalanches, winds, and the like. In particular, construction costs can be reduced by using standing trees.
[0019]
[0020]
[0021]
[0022]
[0023]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, a first embodiment of a protection body of the present invention will be described with reference to FIGS. As shown in the figure, the protective body 1 is composed of a net 11 and an installation means 21 for installing the net 11. A protective surface 11M is formed by the net 11, and in this example, the protective body is formed on a mountain 101. 1 is provided.
[0024]
As shown in FIGS. 4 to 6, the net 11 is a penetration type unconnected reinforcing net made of a synthetic resin, and for example, a plurality of fiber yarns 12 and 12A made of synthetic resin are twisted to form the wires 13 and 13A. These wire rods 13 and 13A have a crossing direction, and are fixed to each other by a crossing portion 14 by a knotless bar. There is a Russell type for the knotless net, but a penetration type is preferably used. FIG. 4 is an explanatory view for explaining the structure. As shown in FIG. 4, at the intersecting portion 14 of the wire rods 13 and 13A, a ring portion 15 formed by a gap between the fiber yarns 12 and 12 of the one wire rod 13 is formed. By inserting the fiber yarns 12A and 12A of the other wire rod 13A from the front and back directions, and twisting the fiber yarns 12 and 12A at the crossing portion 14 and closing the ring portions 15 and 15A, both the wire rods 13 and 13A are inserted. Is fixed at the intersection 14. Reference numeral 15A denotes an annular portion formed by a gap between the fiber yarns 12A and 12A at the intersecting portion 14. 4 shows the ring portions 15 and 15A opened for explanation, but in the actual net 11, the ring portions 15 and 15A are closed.
[0025]
Further, the net 11 has a substantially rectangular shape, and a rope member 16 is provided on the edge of the net 11, and a metal ring 17 is provided on four sides of the rope member 16. Further, as shown in FIGS. 5 and 6, the end portions of the wire rods 13 and 13A are folded back in the rope member 16, and the wire rods 13 and 13A are fixed to each other by overlapping portions 18 of the wire rods 13 and 13A. , 13A is disposed between the rope members 16.
[0026]
The synthetic resin used for the net 11 is preferably high-density polyethylene or the like, and when the high-density polyethylene is used, the specific gravity of the net 11 is 0.94 to 0.96. If necessary, the weather resistance can be improved by using carbon black or an ultraviolet absorber for the net 11.
[0027]
The ridge 101 has side walls 102 and 102 on both sides facing the mountain side, and a depression 103 is formed between the side walls 102 and 102.
[0028]
The setting means 21 includes a lock bolt 22 and a connection ring 23 that removably connects the lock bolt 22 to the ring body 17. As the connection ring 23, a shackle or the like is used. Further, an auxiliary net 24 is connected to the lower part of the net 11 by a connecting part 25. The auxiliary net 24 has substantially the same configuration as the net 11 except that the wire rod is thinner than the net 11.
[0029]
Then, In its us in construction of the protective body 1, the upper sides of the net 11 is fixed by a lock bolt 22 to the upper portion of the side wall 102, 102, the lock bolt 22 of the lower sides of the web 11 at the bottom of the side walls 102, 102 In this case, after fixing the lock bolt 22 by drilling a fixing portion of the lock bolt 22, the connecting ring 23 provided at the tip of the lock bolt 22 is connected to the ring body 17. Further, the lower side of the auxiliary net 24 is laid on the mountain side Y of the depression 103, and the laid portion is fixed to the depression 103 at a plurality of locations by the lock bolts 22. As a result, it is possible to prevent passage of falling rocks between the lower portion of the net 11 and the depression 103. As shown in FIG. 2, the net 11 is previously bent in the vertical direction. Thus, by giving a bend, impacts, such as falling rocks, can be absorbed effectively.
[0030]
Thus, in the present embodiment, corresponding to claim 1, in the protective body 1 having the protective surface 11M which is the surface made of the net 11, the net 11 is made of a synthetic resin, and the net 11 is the installation location 101. Since the installation means 21 to be installed is provided, the net 11 and the installation means 21 are carried into the installation place, and the net 11 is installed by the installation means 21 to form the protective body 1. By using the synthetic resin as the net 11, the weight is reduced, and no large heavy machinery is required for construction transportation, and it is possible to install the protective body 1 in a place where the construction is restricted geographically. Further, since the synthetic resin net 11 has flexibility, it can be made compact by winding it at the time of carrying in, and at the same time the workability at the site is also improved.
[0031]
In this way, in this embodiment, since the net 11 is a knotless net corresponding to claim 1 , the wires 13 and 13A constituting the net 11 are formed straight without being connected at the intersection 14. Therefore, when a force such as falling rocks is applied to the net 11, the force is dispersed throughout the net 11, so that a high shock absorbing function is obtained. Also, since there are no nodules, it is lighter and thinner, making it more compact when stacked, folded or rolled.
[0032]
Also, in this way, in the present embodiment, corresponding to claim 1, the installation site is swamp 101 having sidewalls 102, 102 on both sides, because fixing the both sides of the web 11 on both sides of the side walls 102, 102, The net 11 and the setting means 21 are carried into the site, and the protector 1 is installed with the installation means 21 fixing both sides of the net 11 to the side walls 102 and 102 of the swarm 101. This protective body 1 is inexpensive and can be easily constructed, and becomes a protective body 1 against falling rocks, avalanches, winds, etc. in a river. In particular, the construction cost can be reduced by using the side walls of the grooves 101.
[0033]
In correspondence to claim 1, the network 11 is a substantially rectangular shape, the ring member 17 provided on the network 11, mounting means 21 includes a lock bolt 22 which is fixed to the side wall 10 of the locking bolt 22 ring Since the net 11 is made of a synthetic resin and is relatively lightweight because it includes a connecting ring 23 that is detachably connected to the body 17 , the protective body 1 is used for temporary installation, for example, civil engineering work on the valley side of the river 101, etc. When carrying out the construction, the protective body 1 can be used during the construction period, and the nets 11 and 24 can be easily removed and removed after the construction is completed. Further, the lock bolt 22 can be left as it is, and the nets 11 and 24 can be stretched and used only when necessary.
[0034]
7 to 9 show a second embodiment of the present invention. The same reference numerals are given to the same parts as those in the first embodiment, and detailed description thereof will be omitted. In FIG. 101, the interval between the side walls 102 and 102 is a relatively wide example. The setting means 21 includes a support 31, and the rope member 16 at the upper part of the net 11 is detachably fixed to the upper part of the support 31. The support column 31 is made of a steel pipe or the like, and integrally has a mounting plate 32 at a lower portion, and a hole 33 is formed in the mounting plate 32. The depression 103 is provided with a post fixing part 34. The support for fixed column 34 is formed by biting a leg 35 integrally on the lower surface of the mounting plate 32A having the hole 33. Corresponding to the standing position of the column 31, the column fixing part 35 is installed, and the lock bolt 36 inserted through the hole 33 of the mounting plate 32A is fixed to the depression 103, and the upper end of the lock bolt 36 is fixed to the mounting plate 32A. It protrudes to the upper part. A male screw portion 37 is formed on the upper portion of the lock bolt 36. Then, the mounting plate 32 is placed on the mounting plate 32A by aligning the hole 33 of the mounting plate 32 of the column 31 with the lock bolt 36, and the nut 38 is screwed onto the female screw portion 37 to fix the column fixing portion 34. Fix the column 31 on top. The connecting ring 23 is provided at the upper part of the support 31, and the connecting ring 23 is connected to the rope member 16 at the upper part of the net 11. As shown in FIG. 8, the net 11 is previously bent in the vertical direction.
[0035]
In addition, one end of the holding rope 41 is connected to the upper portion of the support 31, and the other end of the holding rope 41 is fixed to a natural mountain on the mountain side Y of the protective body 1 with a lock bolt 42. Incidentally, by providing a connecting ring or the like at both ends of the holding rope 41, the holding rope 41 can be detachably connected to the column 31 and the lock bolt 42, respectively.
[0036]
Therefore, the nets 11 and 24 can be removed from the lock bolt 22 and the support post 31 by the connecting ring 23, and the support post 31 can be attached and detached by removing the nut 38.
[0037]
As described above, in this embodiment, corresponding to claim 1, exert the same operation and effect as the first embodiment, also in this example, corresponding to claim 2, wherein the locating means 21, Since the columns 11 and 31 are erected at intervals, and the net 11 is stretched between the columns 31 and 31, the net 11 and the setting means 21 are brought into the field, the column 31 is erected, and this column Secure the net 11 to 31 and install the protective body 1. This protective body 1 is inexpensive and can be easily constructed, and becomes a protective body 1 against falling rocks and avalanches.
[0038]
FIGS. 10-11 shows 3rd Embodiment of this invention, attaches | subjects the same code | symbol to the same part as each said embodiment, and abbreviate | omits the detailed description, The protector 1 of this example is the following. A net 11 is stretched between standing trees 111, 111 on the slope of a mountain, and fixing means 51 are attached above and below the standing trees 111, 111. This fixing means 51 is an attachment band 52 with the connecting ring 23. The mounting band 52 is wound around the standing tree 111 and fixed, and the connecting rings 23, 23, 23, 23 are connected to the ring bodies 17, 17, 17, 17 at the four corners of the net 11, respectively. The auxiliary net 24 is fixed to the ground by a winged anchor 53. As shown in FIG. 11, the net 11 is previously bent in the vertical direction.
[0039]
For the mounting band 51, select a material that has little influence on the standing tree 111, and when the protective body 1 is no longer needed, remove the mounting band 51 from the standing tree 111 and return to the state before the protective body 1 was constructed. This is suitable for temporary use.
[0040]
Thus, in the present embodiment, exhibit the upper Symbol same operation and effect as the embodiment, also, in this example, corresponding to claim 3, mounting means 21, the web 11 between the trees 111 and 111 comprising a fixing means 51 for fixing, the network 11 is a substantially rectangular shape, in this network 11 is provided a ring member 17, the fixing means 51 is attached band 52 with connecting ring 23, the mounting band 52 by winding fixed to trees 111, since connecting the connecting ring 23 to the ring body 17, and carried the network 11 and the setting means 21 to the site, secure the mesh 11 to the trees 111 by a fixing means 51 of the mounting means 21 Then, the protective body 1 is installed. This protective body 1 is inexpensive and can be easily constructed, and becomes a protective body 1 against falling rocks, avalanches, winds and the like. In particular, in this example, the construction cost can be reduced by using the standing tree 111.
[0041]
[0042]
[0043]
[0044]
[0045]
[0046]
[0047]
[0048]
[0049]
[0050]
[0051]
In addition, this invention is not limited to the said embodiment, A various deformation | transformation implementation is possible within the range of the summary of this invention. For example, the protective body of the present invention may be used for preventing timber outflow. Further, the protective bodies and protective structures of all the embodiments can be used for temporary installation. For temporary installation, a net is provided when necessary, and the net is removed when it is no longer needed.
[0052]
【The invention's effect】
The invention according to claim 1, a surface constituted by the synthetic resin net, comprising a mounting means for installing the network to the installation location, the network in guards a knotless net, the installation location of the side walls on both sides The mesh has a substantially rectangular shape, the mesh is provided with a ring body, and the installation means is a coupling that removably couples the lock bolt fixed to the side wall and the lock bolt to the ring body. It consists of a ring , is excellent in workability, can be constructed at low cost with a simple construction method, and can provide a protective body using a net that can be easily replaced.
[0053]
[0054]
[0055]
Further, the invention of claim 2, wherein the locating means comprises a pillar erected at intervals, which stretched over the network between the posts, excellent workability, low cost and the method easily It is possible to provide a protective body using a net that can be easily installed and can be easily replaced.
[0056]
Further, the invention of claim 3, and a surface made of a synthetic resin net, comprising a mounting means for installing the network to the installation site, the guards said network is a knotless net, said mounting means includes trees Fixing means for fixing the mesh in between, the mesh having a substantially rectangular shape, the mesh is provided with a ring body, the fixing means is a mounting band with a connecting ring, the mounting band is It is wrapped around a standing tree and fixed, and the connecting ring is connected to the ring body. It has excellent workability, simplifies the construction method, enables low-cost construction, and uses a net that can be easily replaced. Can be provided.
[0057]
[0058]
[Brief description of the drawings]
FIG. 1 is a front view of a protective body showing a first embodiment of the present invention.
FIG. 2 is a side view of the above.
FIG. 3 is a front view of the main part of the above.
FIG. 4 is a front explanatory view for explaining the structure of the net.
FIG. 5 is a plan development view of the end portion of the net, showing the net and the rope material.
6 is a side view of the net having a cross-section partially shown in FIG. 6. FIG. 6 (A) shows a state in which the rope material is overlapped on the end of the net, and FIG. 6 (B) shows the end of the net. Is shown in a state where an overlapping portion is formed by folding.
FIG. 7 is a front view of a protective body showing a second embodiment of the present invention.
FIG. 8 is a side view of the above.
FIG. 9 is a cross-sectional view of the lower part side of the column.
FIG. 10 is a front view of a protective body showing a third embodiment of the present invention.
FIG. 11 is a side view of the same cross section.
[Explanation of symbols]
1 Protective body
11 Net
11M Protective surface (surface)
17- ring
21 Installation method
22 lock bolt
23 linked rings
31 Prop
101
102 sidewall
103 depression
111 Tachiki
51 Fixing means
52 Mounting band
121 road
61 prop
131 slope
71 Protective structure
81 Protective structure Y mountain side

Claims (3)

And a surface made of a synthetic resin net, comprising a mounting means for installing the network to the installation site, the guards said network is a knotless net, a swamp of the installation site has a side wall on both sides, the network Has a substantially rectangular shape, a ring is provided on the net, and the installation means includes a lock bolt fixed to the side wall and a connecting ring for detachably connecting the lock bolt to the ring. Protective body using a net. It said mounting means includes a strut vertically provided at intervals, protective body using a mesh of claim 1 Symbol mounting characterized by being stretched to the network between the posts. In a protective body comprising a surface made of a synthetic resin net and an installation means for installing the net at an installation location, the installation means is a fixing means for fixing the net between standing trees The net is substantially rectangular, the ring is provided on the net, the fixing means is a mounting band with a connecting ring, and the mounting band is wound around the standing tree and fixed, A protector using a net, wherein the connecting ring is connected to the ring .

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