WO2022113428A1 - Clôture absorbant les chocs - Google Patents

Clôture absorbant les chocs Download PDF

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Publication number
WO2022113428A1
WO2022113428A1 PCT/JP2021/028796 JP2021028796W WO2022113428A1 WO 2022113428 A1 WO2022113428 A1 WO 2022113428A1 JP 2021028796 W JP2021028796 W JP 2021028796W WO 2022113428 A1 WO2022113428 A1 WO 2022113428A1
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WO
WIPO (PCT)
Prior art keywords
shock absorber
horizontal rope
rope
shock
horizontal
Prior art date
Application number
PCT/JP2021/028796
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English (en)
Japanese (ja)
Inventor
陽一 西田
満明 山本
太一 石井
Original Assignee
株式会社プロテックエンジニアリング
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Publication of WO2022113428A1 publication Critical patent/WO2022113428A1/fr

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    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
    • E01F15/00—Safety arrangements for slowing, redirecting or stopping errant vehicles, e.g. guard posts or bollards; Arrangements for reducing damage to roadside structures due to vehicular impact
    • E01F15/02—Continuous barriers extending along roads or between traffic lanes
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
    • E01F7/00—Devices affording protection against snow, sand drifts, side-wind effects, snowslides, avalanches or falling rocks; Anti-dazzle arrangements ; Sight-screens for roads, e.g. to mask accident site
    • E01F7/04—Devices affording protection against snowslides, avalanches or falling rocks, e.g. avalanche preventing structures, galleries

Definitions

  • the present invention relates to a shock absorbing fence that captures falling objects such as rockfalls, landslides, and avalanches, and particularly to a shock absorbing fence in which a protective net is provided with a friction-sliding shock absorber.
  • shock absorbing fences that capture falling objects while attenuating the shock by the shock absorbing action of shock absorbers provided at both ends of a plurality of horizontal ropes constituting the protective net (Patent Documents 1 and 2).
  • Patent Documents 1 and 2 explaining with reference to FIG. 12A, in the conventional shock absorbing fence, a plurality of horizontal ropes 82 are stretched in multiple stages between adjacent columns 80. Both ends of each horizontal rope 82 are attached to each support column 80 via friction sliding shock absorbers 81a and 81b. Further, a net material 83 such as a wire mesh is polymerized and arranged on one side surface of the plurality of horizontal ropes 82.
  • the vicinity of both ends of the horizontal rope 82 is gripped by the shock absorbers 81a and 81b, and both ends of the horizontal rope 82 extend outward from the shock absorbers 81a and 81b.
  • the extra length portion 82a is the length extending outward from each of the shock absorbers 81a and 81b. Since the horizontal rope 82 slips and absorbs impact energy when the tension of the horizontal rope 82 exceeds a predetermined value after receiving an impact, the total length of the extra length portion 82a is set according to the slip length L1. ..
  • the conventional shock absorbing fence has the following problems. ⁇ 1> In order to exhibit a predetermined shock absorbing performance, the conventional shock absorbing fence is provided with two shock absorbers 81a and 81b on the left and right sides of one horizontal rope 82, and further left and right of the horizontal rope 82. It is necessary to form two extra length portions 82a on both sides. Therefore, when the number of horizontal ropes 82 is increased, not only the number of shock absorbers 81a and 81b used increases, but also the length of use of the horizontal rope 82 including the two extra length portions 82a becomes long.
  • shock absorbers 81a and 81b used As the number of shock absorbers 81a and 81b used increases and the total length of the horizontal rope 82 becomes longer, not only the material cost of the shock absorbing fence increases, but also the assembly man-hours increase. ⁇ 2> This will be described with reference to FIG. 12 (B).
  • the two shock absorbers 81a and 81b provided at both ends of the horizontal rope 82 do not exhibit the shock absorber function at the same time, and there is room for improvement in the absorption efficiency of impact energy.
  • the present invention has been made to solve the above problems, and an object of the present invention is to provide at least one shock absorbing fence as follows. ⁇ 1> To reduce material costs and simplify the assembly work of impact absorbing fences. ⁇ 2> It is possible to prevent the extra length of the horizontal rope from jumping out toward the outside of the shock absorbing fence, and improve the landscape and safety of the shock absorbing fence. ⁇ 3> The horizontal rope can be easily stretched.
  • the present invention includes a plurality of columns erected at predetermined intervals and a protective net stretched between the plurality of columns, and the protective net is a single or a plurality of columns stretched between adjacent columns.
  • a shock absorbing fence provided with a horizontal rope and a shock absorber interposed between one end of the horizontal rope and a strut.
  • the horizontal rope forms a fixed end at one end thereof and is left over at the other end.
  • a plurality of horizontal ropes are stretched by alternately reversing the installation position of the shock absorber and the fixing position of the horizontal rope between adjacent columns.
  • a plurality of horizontal ropes are stretched by aligning the installation position of the shock absorber and the fixing position of the horizontal rope to each adjacent column.
  • a single or a plurality of shock absorbers wherein the shock absorber has an insertion hole and a grip hole having a diameter difference, and an extra length portion of a horizontal rope can be inserted into the insertion hole and the grip hole. It has a curved guide surface, is provided with a reversing guide body that is moored by reversing the extra length portion of the horizontal rope, and the extra length portion of the horizontal rope that is wound around the reversing guide body and inverted is used as a shock absorbing fence. Route inward.
  • the shock absorber is located between the shock absorber and the inversion guide body, and includes an inversion spacer that keeps the distance between the shock absorber and the inversion guide body constant, and the inversion spacer is provided. It may be configured so that the shock absorber is located on one side surface.
  • the extra length portion of the horizontal rope wound around the reversing guide body of the shock absorber and inverted is gripped by the gripping hole of the shock absorber.
  • the hole diameter of the gripping hole of the shock absorber for gripping the extra length portion of the horizontal rope wound around the reversing guide body of the shock absorber and inverted is smaller than the insertion hole.
  • the diameter of the gripping hole of the shock absorber of the shock absorber is smaller than the rope diameter of the horizontal rope.
  • the hole diameter of the insertion hole of the shock absorber of the shock absorber has a dimensional relationship of substantially the same diameter as the rope diameter of the horizontal rope.
  • the shock absorber of the shock absorber has a pair of holding plates exhibiting the same structure and a tightening means for uniformly tightening between the pair of holding plates, and the above-mentioned facing surfaces of the pair of holding plates. It has two accommodating grooves having a semicircular cross section for defining the insertion hole and the gripping hole.
  • the present invention has at least one of the following effects.
  • One end of the horizontal rope is fixed to one of the columns so that it cannot be slidable, and the other end of the horizontal rope having an extra length formed on only one side can be slidable to the other column via a shock absorber.
  • a shock absorber By stretching, it is possible to reduce the number of shock absorbers used and the length of horizontal ropes used while ensuring stable cushioning performance. Therefore, it is possible to reduce the material cost and simplify the assembly work of the impact absorbing fence as compared with the conventional case.
  • ⁇ 2> When multiple horizontal ropes are stretched by alternately reversing the installation position of the shock absorber and the fixed position of the horizontal rope between adjacent columns, the extension direction of each horizontal rope located up and down at the time of receiving is changed.
  • the extra length of the horizontal rope wound around the reversing guide body and flipped can be routed toward the inside of the shock absorbing fence.
  • the extra length does not have to jump out of the fence. Therefore, not only the landscape of the shock absorbing fence is improved, but also the safety of the shock absorbing fence is improved without obstructing the passage of climbers and the like.
  • the extra length of the horizontal rope can be routed toward the inside of the shock absorbing fence, it is wound between the horizontal rope separated from the shock absorber and the extra length routed inside the shock absorbing fence. The machine can be hung, and the extra length can be easily pulled and stretched by obtaining reaction force on the columns and horizontal ropes.
  • Model diagram of the shock absorbing fence according to the first embodiment of the present invention An explanatory diagram of the shock absorber, (A) is an explanatory diagram of a clip-type shock absorber, and (B) is an explanatory diagram of a wedge-shaped shock absorber. It is an explanatory diagram of the impact absorption action in the impact absorption fence, (A) is a model diagram of the impact absorption fence before receiving, and (B) is a model diagram of the impact absorption fence at the time of reception. Model diagram of a shock absorbing fence to explain an example of horizontal rope arrangement Perspective view of the shock absorbing fence according to the second embodiment of the present invention in which a part is omitted.
  • (A) is a central vertical sectional view of the shock absorber
  • (B) is a sectional view of BB of (A)
  • (C) is an explanatory view of a rope diameter.
  • An explanatory diagram of the tension work of the horizontal rope using the shock absorber is an explanatory diagram of the mooring work of the shock absorber to the support column
  • (B) is an explanatory diagram of the tension work of the extra length portion of the horizontal rope.
  • a model diagram of a shock absorbing fence for explaining an example of horizontal rope arrangement (A) is a model diagram of a shock absorbing fence by changing the arrangement of upper and lower horizontal ropes, and (B) is an arrangement of upper and lower horizontal ropes.
  • the shock absorbing fence premised on the present invention includes a plurality of columns 10 erected at predetermined intervals and a protective net stretched between the plurality of columns 10. ..
  • the shock absorbing fence will be described in detail below.
  • the column 10 is a terminal column or an intermediate column, and any one of known steel materials such as shaped steel and steel pipes, concrete columns, and filled steel pipes in which steel pipes and concrete are combined can be applied.
  • the stanchion form of the stanchion 10 may be erected so as to be tiltable, or the lower portion of the stanchion 10 may be embedded in a concrete foundation, the local ground, or the like so as to be erected so as not to be tilted.
  • the tilting support column 10 may have a hinge structure that allows tilting along the tilting direction of the slope, in addition to an upright structure that allows tilting in all directions.
  • the protective net consists of a single or a plurality of horizontal ropes 20 stretched between adjacent columns 10, a net material 25 such as a wire mesh laminated on one side of the plurality of horizontal ropes 30, and a horizontal rope. It is provided with at least one end of 20 and a shock absorber 30A installed between the columns 10.
  • a shock absorber 30A is provided on either the left or right side of the strut 10, and if the strut 10 is an intermediate strut, shock absorbers 30A are provided on both the left and right sides of the strut 10.
  • the horizontal rope 20 is a wire rope, and has a fixed end portion 21 at one end thereof and an extra length portion 22 at the other end portion.
  • one end of the horizontal rope 20 is non-slidingly fixed to one of the columns 10, and the other end of the horizontal rope 20 forming the extra length portion 22 is slid to the column 10 via the shock absorber 30A.
  • the fixing means of the fixing end portion 21 of the horizontal rope 20 may be connected to a bracket or the like projecting from the side surface of the support column 10, or may be wound around the peripheral surface of the support column 10 and fixed.
  • the horizontal rope 20 is a wire rope that is laid horizontally on adjacent columns 10 in multiple stages. Since one end of the horizontal rope 20 is fixed to the support column 10, the total length of one of the horizontal rope 20 is the rope length obtained by adding the length of the extra length portion 22 on only one side to the horizontal length between the adjacent support columns 10. It's fine. That is, in the present invention, since the extra length portions 22 are not formed at both ends of the horizontal rope 20 as in the conventional case, the total length of the horizontal rope, which is the total number of all the ropes used, can be significantly reduced as compared with the conventional method.
  • the shock absorber 30A which is the first shock absorber, is a friction sliding brake device that slips the horizontal rope 20 to attenuate the tension when the tension acting on the horizontal rope 20 reaches a certain level or more. be.
  • the shock absorber 30A is installed only at one end of one horizontal rope 20.
  • the number of shock absorbers 30A used can be halved as compared with the conventional shock absorbing fence in which the shock absorbers 30A are installed at both ends of the horizontal rope 20, so that not only the material cost can be significantly reduced, but also the shock absorber The assembly work of 30A can be halved.
  • shock absorber 31 for gripping the horizontal rope 20, a pressing plate 32 for supporting the shock absorber 31, and a U-bolt or the like for connecting the bearing plate 32 to the side surface of the support column 10 are connected. It consists of a combination with the material 33.
  • the shock absorber 31 may be a combination of two holding plates capable of holding a rope and bolts capable of tightening between the holding plates.
  • the shock absorber 30A illustrated in FIG. 2B comprises a combination of a shock absorber 34 that grips the horizontal rope 20 with a wedge body and a connecting member 33 that connects the shock absorber 34 to the side surface of the support column 10.
  • the shock absorber 34 includes a block body 34a having a tapered hole through which the lateral rope 20 can be inserted, and a wedge body 34b formed by dividing a conical body that can be inserted into the tapered hole of the lock body 34a.
  • the horizontal rope 20 is inserted into the wedge body 34b, and the horizontal rope 20 can be gripped by the tightening force of the wedge body 34b.
  • the shock absorber 30A is not limited to the form exemplified in FIG. 2, and a known friction sliding type shock absorber can be applied.
  • FIG. 3A shows a shock absorbing fence before reception.
  • the fixed end 21 at one end of the horizontal rope 20 constituting the protective net is attached to the right support column 10. It is directly fixed to the rope, and the vicinity of the other end of the horizontal rope 20 is gripped by the shock absorber 30A and connected to the left support column 10.
  • FIG. 1 shows a form in which the installation position of the shock absorber 30A and the fixed position of the horizontal rope 20 are alternately reversed for each of the adjacent columns 10. Is shown. That is, it is an erection form in which the shock absorber 30A and the fixed end portion 21 are attached to the specific support column 10 along the height direction.
  • the alternating position between the installation position of the shock absorber 30A and the fixed position of the horizontal rope 20 is not limited to every other horizontal rope 20 shown in the figure, and may be replaced every other plurality of ropes.
  • the horizontal rope 20 slips and stretches at the time of reception, but since the stretching directions of the horizontal ropes 20 located above and below are different, the horizontal ropes 20 are polymerized on one side of the plurality of horizontal ropes 20. There is an advantage that the net material 25 such as the wire mesh attached to the rope can be prevented from being dragged and damaged in a specific direction.
  • FIG. 4 shows a form in which the shock absorber 30A is installed and the horizontal rope 20 is fixed in the same support column 10. That is, it is an erection form in which only a plurality of shock absorbers 30A of the same type or only a plurality of fixed end portions 21 are attached to a specific support column 10 along the height direction.
  • the right end portion of each horizontal rope 20 is non-slidingly fixed to the right strut 10, and the left end portion of each lateral rope 20 is connected to the left strut 10 via the shock absorber 30A. ..
  • the work of attaching the horizontal rope 20 to the specific support column 10 (the work of fixing the horizontal rope 20 and the work of attaching the horizontal rope 20 via the shock absorber 30A) are common. Therefore, it is possible to efficiently perform the same type of mounting work on each of the columns 10 without moving the mounting tools and equipment.
  • Example 1 has the following effects. 1) In this embodiment, one end of the horizontal rope 20 is non-slipperably fixed to one of the columns 10, and the other end of the horizontal rope 20 having the extra length 22 formed on only one side is passed through the shock absorber 30A. By slidably stretching the support column 10, it is possible to reduce the number of shock absorbers 30A used and the length of the horizontal rope 20 used while ensuring stable cushioning performance. 2) Not only can the number of shock absorbers 30A used be halved for one horizontal rope, but also the extra length can be formed only on one side 6b, so the material cost of the entire shock absorbing fence can be significantly reduced. At the same time, the man-hours for assembling the shock absorber 30A can be reduced, and the assembly work of the shock absorbing fence can be simplified.
  • one end of the horizontal rope 20 is non-slidingly fixed to one of the columns 10, and the other end of the horizontal rope 20 forming the extra length portion 22 is buffered. It is slidably stretched on the support column 10 via the device 30B.
  • the inversion spacer 60 is not essential and may be omitted.
  • the reversing guide body 50 may be formed in a semicircular shape, and one side of the reversing guide body 50 may be brought into contact with the side surface of the shock absorber 40 to omit the reversing spacer 60.
  • the shock absorber 40 has a pair of holding plates 41, 41 having the same structure and a tightening means for uniformly tightening between the pair of holding plates 41, 41.
  • the facing surfaces of the pair of holding plates 41 and 41 have a first accommodating groove 42a and a second accommodating groove 43a having a semicircular cross section at intervals, and face the facing surfaces of the pair of sandwiching plates 41 and 41.
  • the pair of first accommodating grooves 42a face each other to form the insertion hole 42 having a circular cross section
  • the pair of second accommodating grooves 43a face each other to form the gripping hole 43 having a circular cross section.
  • the insertion hole 42 and the gripping hole 43 may have a uniform diameter over the entire length, but if the enlarged diameter portions 42b and 43b having a trumpet-like diameter are formed at both ends of both holes 42 and 43, the horizontal rope 20 can be laid out. And the extra length portion 22 of the horizontal rope 20 can be smoothly slipped.
  • the dimensional relationship between the hole diameters of the insertion hole and the grip hole will be described with reference to FIG.
  • the hole diameters of the insertion hole 42 and the gripping hole 43 are not the same, but have a diameter difference.
  • the difference in the hole diameters of the two holes 42 and 43 is provided so that the shock absorber 40 can be urged in the approaching direction of the support column 10 (or the reversing spacer 60) by utilizing the tension acting on the lateral rope 20. This is to control the moving direction of the tool 40.
  • the hole diameter d 2 of the gripping hole 43 has a dimensional relationship relatively small with respect to the hole diameter d 1 of the insertion hole 42.
  • the hole diameter d 1 of the insertion hole 42 has a larger diameter than the hole diameter d 2 of the gripping hole 43, and has a dimensional relationship equal to or larger than the rope diameter d 3 of the horizontal rope 20.
  • the hole diameter d 2 of the gripping hole 43 has a dimensional relationship smaller than that of the hole diameter d 1 of the insertion hole 42 and the rope diameter d 3 .
  • the hole diameter d 1 of the insertion hole 42 is 18 mm
  • the hole diameter d 2 of the gripping hole 43 is 16 mm.
  • the hole diameter d 1 of the insertion hole 42 may be slightly smaller than the rope diameter d 3 while having a larger diameter relationship than the hole diameter d 2 of the grip hole 43 (grip hole).
  • Hole diameter d 2 of 43 ⁇ hole diameter d 1 of insertion hole 42 ⁇ rope diameter d 3 of horizontal rope 20).
  • the lateral rope 20 is guided by the insertion hole 42, the folded extra length portion 22 is slipperably gripped by the grip hole 43 having the minimum diameter, and the tension acting on the extra length portion 22 is the grip of the grip hole 43.
  • the extra length portion 22 is configured to start slipping when the force is exceeded.
  • a difference in diameter is provided between the insertion hole 42 and the gripping hole 43 of the shock absorber 40, and the folded extra length portion 22 is gripped by the gripping hole 43 having the minimum diameter, which stabilizes the tension acting on the lateral rope 20. This is because it is attenuated.
  • Tightening means for example, a combination of a plurality of tightening bolts 44 and nuts 45, a vise type tightening tool, or the like can be used.
  • the tightening means may be any as long as it can be tightened between the pair of holding plates 41, 41 with an even force.
  • bolt holes are provided at positions that do not interfere with the insertion holes 42 and the gripping holes 43.
  • the inversion spacer 60 is an interval holding material that keeps the interval between the shock absorber 40 and the inversion guide body 50 constant.
  • One of the left and right sides of the reversing spacer 60 can abut on the side surface of the shock absorber 40, and the other side of the reversing spacer 60 can abut on the reversing guide body 50.
  • the reversing spacer 60 may have any structure as long as the separation distance between the reversing guide body 50 and the shock absorber 40 can be kept constant without hindering the folding back of the extra length portion 22 of the lateral rope 20 extending from the shock absorber 40.
  • the reversing guide body 50 has a guide surface 51 curved in an arc shape for folding back the extra length portion 22 of the horizontal rope 20 extending from the shock absorber 40.
  • the inverted guide body 50 is not limited to the ring body, and the guide surface 51 curved in an arc shape for folding back the extra length portion 22. Any structure may be used.
  • the reversing guide body 50 is composed of a ring body, the ring body may be in either a rotatable or non-rotatable form with respect to the reversing spacer 60.
  • the reversing guide body 50 is moored to the mooring hook 11 of the support column 10 via a connecting jig 52 such as a shackle.
  • FIG. 9 (A) shows the state before the tension of the horizontal rope 20.
  • the right fixed end of the horizontal rope 20 is fixed to a separate support as in the first embodiment.
  • the wiring work of the extra length portion 22 of the horizontal rope 20 will be described in detail.
  • the reversing guide body 50 of the shock absorber 40 is moored to a mooring hook 11 projecting from the inner side surface of the strut 10 (inside the strut 10 span) via a connector 52 such as a shackle.
  • the left extra length portion 22 of the horizontal rope 20 is wound around the guide surface 51 of the reversing guide body 50 and inverted.
  • the reversing spacer 60 is arranged on the side of the reversing guide body 50, and the shock absorber 40 is arranged on the side of the reversing spacer 60.
  • FIG. 9B shows the tension work of the horizontal rope 20 in this example.
  • the shock absorber 30B by using the shock absorber 30B, the extra length portion 22 extending from the shock absorber 40 can be folded back and routed. Therefore, a winder 70 such as a chain block or a lever hoist is hung between the horizontal rope 20 separated from the shock absorber 30B and the extra length portion 22 which is folded back and extends from the shock absorber 30B, and the support column 10 and the horizontal rope are hung. A reaction force can be obtained from 20 to pull the extra length portion 22.
  • a known detachable rope grip 71 is used for connecting. With the horizontal rope 20 tense, the shock absorber 40 is fully tightened so that the extra length portion 22 does not return, and the winder 70 is removed.
  • the lateral rope 20 can be stretched between the adjacent columns 10 without slack by obtaining a reaction force from the column 10 and the lateral rope 20 and pulling the extra length portion 22. Therefore, unlike the conventional tension method, it is not necessary to provide a separate reaction force source on the outside of the support column 10, and the horizontal rope 20 can be easily stretched between the support columns 10, and the workability of the horizontal rope 20 is stretched. Can be improved.
  • the extra length portion 22 of the horizontal rope 20 can be folded back by the shock absorber 30B and arranged toward the inside of the impact absorption fence, so that the extra length portion 22 does not protrude to the outside of the impact absorption fence. It's done. Therefore, not only the landscape of the shock absorbing fence is improved, but also the safety of the shock absorbing fence is improved without obstructing the passage of climbers and the like.
  • FIG. 10A shows a mode in which a plurality of horizontal ropes 20 are erected in multiple stages between adjacent columns 10, and the installation position of the shock absorber 30B and the fixed position of the horizontal rope 20 are alternately reversed. ing.
  • FIG. 10B shows a mode in which a plurality of horizontal ropes 20 are erected in multiple stages between adjacent columns 10, and the installation position of the shock absorber 30B and the fixed position of the horizontal rope 20 are aligned in the same manner. There is.
  • the advantages of the horizontal rope 20 in each erection form are as described above.
  • the extra length portion 22 of the horizontal rope 20 wound around the reversing ring body 50 inserts both holes 42 and 43 of the shock absorber 40 into the gripping hole having the smallest diameter. 43 holds the end side of the extra length portion 22 so as not to be slidable.
  • the tension introduced into the lateral rope 20 is supported by the stanchion 10 through the shock absorber 30B, the connector 52 and the mooring hook 11.
  • the shock absorber 40 can attenuate the tension of the lateral rope 20 due to the sliding resistance when the extra length portion 22 is pulled out.
  • the extra length portion 22 of the horizontal rope 20 is folded back, and the side of the folded extra length portion 22 near the end is gripped by the gripping hole 43. Therefore, the extra length portion 22 is compared with the conventional shock absorber. The stability of the slip tension (sliding resistance) is significantly improved.
  • the shock absorber 40 is lateral even if the extra length portion 22 slides. Do not move. Therefore, it is possible to prevent the shock absorber 40 from interfering with the net material such as the wire mesh constituting the protective net and damaging the protective net.
  • Example 2 Effect of Example 2 The following effects are exhibited in this Example 2. 1) In the conventional shock absorbing fence, the extra length of the horizontal rope extending through the shock absorber is left protruding outside the shock absorbing fence. For this reason, the extra lengths of many horizontal ropes stick out to the outside of the fence body, which not only makes the landscape worse, but also has the problem of obstructing the passage of climbers and the like. .. In this example, since the extra length portion 22 of the horizontal rope 20 can be folded back by the shock absorber 30B and routed toward the inside of the shock absorbing fence, the extra length portion 22 does not have to jump out of the fence.
  • the shock absorber 30B has a structure in which a shock absorber 40 having a simple structure, an inversion guide body 50, etc. are arranged side by side, not only can the shock absorber 30B be manufactured at low cost, but also the assembly work of the shock absorber 30B at the site can be performed. Can be done easily.
  • a plurality of shock absorbers 30B having the same structure may be arranged on the side surface of the inversion guide body 50. By selecting the number of buffers 40 to be arranged, the cushioning performance of the shock absorber 30B can be adjusted.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
  • Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)

Abstract

L'invention traite le problème consistant à empêcher que des longueurs excédentaires de câble transversal soient amenées à dépasser vers l'extérieur d'une clôture absorbant les chocs, tout en réduisant les coûts de matériaux et en simplifiant le travail d'assemblage de la clôture absorbant les chocs. La solution selon l'invention consiste en une clôture absorbant les chocs comportant une pluralité de poteaux 10, des câbles transversaux 20 tendus entre la pluralité de poteaux 10, et des dispositifs 30A (30B) d'amortissement interposés entre une extrémité des câbles transversaux 20 et les poteaux 10, les câbles transversaux 20 présentant des extrémités fixes 21 formées sur une de leurs extrémités et des longueurs excédentaires 22 formées sur l'autre de leurs extrémités, et étant placés de façon à s'étendre avec les extrémités fixes 21 des câbles transversaux 20 fixées de façon non glissante à un poteau parmi des poteaux 10 adjacents, et les autres extrémités des câbles transversaux 20 formées avec les longueurs excédentaires fixées de façon glissante à l'autre des poteaux 10 adjacents par l'intermédiaire des dispositifs 30A (30B) d'amortissement.
PCT/JP2021/028796 2020-11-30 2021-08-03 Clôture absorbant les chocs WO2022113428A1 (fr)

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JP2020-198699 2020-11-30
JP2020198699A JP6905289B1 (ja) 2020-11-30 2020-11-30 衝撃吸収柵

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CN113914236B (zh) * 2021-10-26 2022-09-23 应急管理部国家自然灾害防治研究院 一种具备韧性消能功能的滑坡崩塌落石防护网拉锁结构
KR102578426B1 (ko) * 2023-04-20 2023-09-15 (주)아루미존 자살 방지 펜스

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002180422A (ja) * 2000-10-04 2002-06-26 Kanamori Tobei Shoji Kk エネルギー分散型落石防護柵
WO2008081557A1 (fr) * 2006-12-27 2008-07-10 Protec Engineering Inc. Clôture de protection antichocs
JP2020117930A (ja) * 2019-01-23 2020-08-06 株式会社プロテックエンジニアリング 防護柵

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002180422A (ja) * 2000-10-04 2002-06-26 Kanamori Tobei Shoji Kk エネルギー分散型落石防護柵
WO2008081557A1 (fr) * 2006-12-27 2008-07-10 Protec Engineering Inc. Clôture de protection antichocs
JP2020117930A (ja) * 2019-01-23 2020-08-06 株式会社プロテックエンジニアリング 防護柵

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