JP6979838B2 - Shock absorber and rockfall protection - Google Patents

Shock absorber and rockfall protection Download PDF

Info

Publication number
JP6979838B2
JP6979838B2 JP2017184382A JP2017184382A JP6979838B2 JP 6979838 B2 JP6979838 B2 JP 6979838B2 JP 2017184382 A JP2017184382 A JP 2017184382A JP 2017184382 A JP2017184382 A JP 2017184382A JP 6979838 B2 JP6979838 B2 JP 6979838B2
Authority
JP
Japan
Prior art keywords
rope
plate
shock absorber
rockfall
members
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
JP2017184382A
Other languages
Japanese (ja)
Other versions
JP2019060104A (en
Inventor
裕介 野崎
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JFE Metal Products and Engineering Inc
Original Assignee
JFE Metal Products and Engineering Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by JFE Metal Products and Engineering Inc filed Critical JFE Metal Products and Engineering Inc
Priority to JP2017184382A priority Critical patent/JP6979838B2/en
Publication of JP2019060104A publication Critical patent/JP2019060104A/en
Application granted granted Critical
Publication of JP6979838B2 publication Critical patent/JP6979838B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Description

本発明は、落石を捕捉する落石防護用装置に取り付けられる緩衝装置及び当該緩衝装置を有する落石防護装置に関する。 The present invention relates to a shock absorber attached to a rockfall protection device for capturing rockfalls and a rockfall protection device having the shock absorber .

岩石、土砂、倒木等が路上或いは家屋へ落下することを防止するために、道路脇や山腹斜面等に設置され、落下途中の岩石等（以下、落石と称する）を捕捉する落石防護装置が知られている。また、落石防護装置には、落石を捕捉して、落石のエネルギーを吸収する緩衝装置が用いられている。 In order to prevent rocks, earth and sand, windthrows, etc. from falling onto the road or to houses, rockfall protection devices that are installed on the side of roads or on hillside slopes and capture rocks, etc. in the middle of falling (hereinafter referred to as rockfalls) are known. Has been done. Further, as the rockfall protection device, a shock absorber that captures the rockfall and absorbs the energy of the rockfall is used.

例えば、落石を捕捉する落石防止網を支えるロープ材を重合させて形成した重合箇所を挟持具により一定の力で挟持し、ロープ材に設定張力以上の張力が作用したとき、ロープ材が一定の摩擦力を保持したまま重合箇所のロープ材が伸長して張力を吸収する緩衝装置が提案されている（例えば特許文献１参照）。 For example, when a polymerized portion formed by polymerizing a rope material that supports a rockfall prevention net that catches rockfall is sandwiched by a holding tool with a constant force, and a tension higher than the set tension is applied to the rope material, the rope material becomes constant. A shock absorber has been proposed in which the rope material at the overlapped portion is stretched to absorb the tension while maintaining the frictional force (see, for example, Patent Document 1).

特開平６−１７３２２１号公報Japanese Unexamined Patent Publication No. 6-173221

従来の落石防護装置に取り付けられる緩衝装置は、ワイヤーロープを重合させてロープ材同士が接触することによる摩擦を利用している。しかし、ワイヤーロープはストランドを撚り合わせて作られており、ワイヤーロープの周面は凹凸状に形成されている。そのため、ワイヤーロープ同士の摺動による摩擦は、摩擦力が一定ではなく、ロープ材の張力の低減を一定にすることが難しい。落石防護装置において、落石防止網を指示するロープ材の張力の低減が一定ではないと、ロープ材を支持する支柱或いはアンカーなどにロープ材の張力が急激に加わり、例えば、支柱が意図しない方向に倒壊する恐れがある。 The shock absorber attached to the conventional rock fall protection device utilizes friction caused by polymerizing wire ropes and bringing the rope materials into contact with each other. However, the wire rope is made by twisting strands, and the peripheral surface of the wire rope is formed in an uneven shape. Therefore, the friction caused by the sliding of the wire ropes does not have a constant frictional force, and it is difficult to make the reduction of the tension of the rope material constant. In the rockfall protection device, if the reduction in the tension of the rope material that indicates the rockfall prevention net is not constant, the tension of the rope material is suddenly applied to the columns or anchors that support the rope material, for example, in the direction that the columns do not intend. There is a risk of collapse.

本発明は、上記のような課題を解決するためになされたものであり、ロープ材に加わる張力の低減を一定にする緩衝装置及び落石防護装置を提供することを目的とする。 The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a shock absorber and a rock fall protection device that keep the reduction of tension applied to the rope material constant.

本発明に係る緩衝装置は、落石を捕捉する落石捕捉部を支持するロープ状の支持部材を有する落石防護装置に取り付けられ、支持部材を構成し、落石捕捉時に反対方向に張力が作用する２本のロープ部材の重合部分を把持する緩衝装置であって、平板状に形成された第１平板部と、第１平板部の短手方向の中央部分において長手方向に沿って膨出した第１膨出部とを有する第１拘束板と、平板状に形成された第２平板部と、第２平板部の短手方向の中央部分において長手方向に沿って膨出した第２膨出部とを有する第２拘束板と、第１拘束板と第２拘束板との間に配置される中間板と、第１拘束板の第１平板部と第２拘束板の第２平板部とを締付ける締結部材と、を有し、第１膨出部と中間板との間に２本のロープ部材のうちの一方のロープ部材が配置され、第２膨出部と中間板との間に２本のロープ部材のうちの他方のロープ部材が配置されるものである。 The shock absorber according to the present invention is attached to a rockfall protection device having a rope-shaped support member for supporting the rockfall trapping portion, constitutes a support member, and tension acts in the opposite direction when the rockfall is captured. A shock absorber that grips the overlapped portion of the rope member, and is a first bulge that bulges along the longitudinal direction at the first flat plate portion formed in a flat plate shape and the central portion in the lateral direction of the first flat plate portion. A first restraint plate having a protruding portion, a second flat plate portion formed in a flat plate shape, and a second bulging portion bulging along the longitudinal direction in the central portion of the second flat plate portion in the lateral direction. Fastening to fasten the second restraint plate to be held, the intermediate plate arranged between the first restraint plate and the second restraint plate, and the first flat plate portion of the first restraint plate and the second flat plate portion of the second restraint plate. It has a member, and one of the two rope members is arranged between the first bulging portion and the intermediate plate, and two rope members are arranged between the second bulging portion and the intermediate plate. The other rope member of the rope members is arranged.

本発明に係る緩衝装置は、落石捕捉時に反対方向に張力が作用する２本のロープ部材の重合部分を把持する緩衝装置であって、第１膨出部と中間板との間に２本のロープ部材のうちの一方のロープ部材が配置され、第２膨出部と中間板との間に２本のロープ部材のうちの他方のロープ部材が配置されるものである。そのため、落石捕捉時に２本のロープ部材は、第１拘束板及び第２拘束板と、並びに、中間板と面接触し、摺動摩擦抵抗に抗しながら摺動する。この際、緩衝装置は、２本のロープ部材が、第１拘束板及び第２拘束板と、並びに、中間板と面接触することで、２本のロープ部材に加わる張力の低減を一定にすることができる。 The shock absorber according to the present invention is a shock absorber that grips a superposed portion of two rope members on which tension acts in opposite directions when trapping rockfall, and has two ropes between the first bulging portion and the intermediate plate. One of the rope members is arranged, and the other rope member of the two rope members is arranged between the second bulging portion and the intermediate plate. Therefore, when the rock falls, the two rope members come into surface contact with the first restraint plate and the second restraint plate and the intermediate plate, and slide while resisting the sliding friction resistance. At this time, the shock absorber makes the reduction of the tension applied to the two rope members constant by causing the two rope members to come into surface contact with the first restraint plate and the second restraint plate and the intermediate plate. be able to.

本発明の実施の形態１に係る緩衝装置が取り付けられた落石防護装置の概略図である。It is a schematic diagram of the rockfall protection device to which the shock absorber according to the first embodiment of the present invention is attached. 図１の支持部材の概略図である。It is a schematic diagram of the support member of FIG. 本発明の実施の形態１に係る緩衝装置の正面図である。It is a front view of the shock absorber which concerns on Embodiment 1 of this invention. 本発明の実施の形態１に係る緩衝装置のＡ−Ａ線断面図である。FIG. 3 is a sectional view taken along line AA of the shock absorber according to the first embodiment of the present invention. 本発明の実施の形態１に係る緩衝装置の側面図である。It is a side view of the shock absorber which concerns on Embodiment 1 of this invention.

実施の形態１．
図１は、本発明の実施の形態１に係る緩衝装置１００が取り付けられた落石防護装置２００の概略図である。なお、図１を含む以下の図面では、各構成部材の相対的な寸法の関係及び形状等が実際のものとは異なる場合がある。また、以下の図面において、同一の符号を付したものは、同一又はこれに相当するものであり、このことは明細書の全文において共通することとする。また、理解を容易にするために方向を表す用語（例えば「上」、「下」、「右」、「左」、「前」、「後」など）を適宜用いるが、それらの表記は、説明の便宜上、そのように記載しているだけであって、装置あるいは部品の配置及び向きを限定するものではない。 Embodiment 1.
FIG. 1 is a schematic view of a rockfall protection device 200 to which a shock absorber 100 according to the first embodiment of the present invention is attached. In the following drawings including FIG. 1, the relative dimensional relationships and shapes of the constituent members may differ from the actual ones. Further, in the following drawings, those having the same reference numerals are the same or equivalent thereof, and this shall be common to the entire text of the specification. In addition, terms that indicate directions (for example, "top", "bottom", "right", "left", "front", "rear", etc.) are used as appropriate for ease of understanding, but these notations are used. For convenience of explanation, it is described as such, and does not limit the arrangement and orientation of the device or component.

［落石防護装置２００］
まず、本発明の実施の形態１に係る緩衝装置１００が取り付けられる落石防護装置２００について説明する。落石防護装置２００は、岩石、土砂、倒木等が路上或いは家屋へ落下することを防止するために、道路脇や山腹斜面等に設置され、落下途中の岩石等を捕捉するものである。落石防護装置２００は、被支持部２１０に固定される複数の支柱２２０と、複数の支柱２２０の間に架設された横柱２３０とを有する。また、落石防護装置２００は、横柱２３０と被支持部２１０との間において複数の支柱２２０の間を覆い落石を捕捉する落石捕捉部２４０を有する。また、落石防護装置２００は、落石捕捉部２４０を支持するロープ状の支持部材２５０を有する。さらに、落石防護装置２００は、支持部材２５０に緩衝装置１００を有する。落石防護装置２００は、支柱２２０と、横柱２３０と、落石捕捉部２４０と、支持部材２５０と、緩衝装置１００とを用いて、落石を捕捉し、落石の運動エネルギーを吸収する。 [Rockfall protection device 200]
First, a rockfall protection device 200 to which the shock absorber 100 according to the first embodiment of the present invention is attached will be described. The rockfall protection device 200 is installed on the side of a road, on a hillside slope, or the like to prevent rocks, earth and sand, fallen trees, etc. from falling onto the road or a house, and captures the rocks in the middle of falling. The rockfall protection device 200 has a plurality of columns 220 fixed to the supported portion 210, and a horizontal column 230 erected between the plurality of columns 220. Further, the rockfall protection device 200 has a rockfall catching portion 240 that covers between the plurality of pillars 220 between the horizontal pillar 230 and the supported portion 210 and catches the rockfall. Further, the rockfall protection device 200 has a rope-shaped support member 250 that supports the rockfall catching portion 240. Further, the rockfall protection device 200 has a shock absorber 100 on the support member 250. The rockfall protection device 200 captures the rockfall and absorbs the kinetic energy of the rockfall by using the pillar 220, the horizontal pillar 230, the rockfall catching portion 240, the support member 250, and the shock absorber 100.

［被支持部２１０］
被支持部２１０は、道路脇や山腹斜面等の地盤、あるいは擁壁等の基礎部分である。被支持部２１０は、斜面を構成する部分でもよく、平坦面を構成する部分であってもよい。 [Supported portion 210]
The supported portion 210 is a ground such as a roadside or a hillside slope, or a foundation portion such as a retaining wall. The supported portion 210 may be a portion constituting a slope or a portion constituting a flat surface.

［支柱２２０］
複数の支柱２２０は、被支持部２１０に立てられる円柱状の柱であり、一端が被支持部２１０内に埋設されて固定される。なお、支柱２２０は、円柱状の柱に限定されるものではなく、多角柱状等他の形状の柱であってもよい。なお、落石捕捉部２４０が、一定以上の落石の運動エネルギーを吸収した場合に、支柱２２０は、所定の方向に折れ曲がり、落石の運動エネルギーを所定の方向へと逃がす。 [Post 220]
The plurality of columns 220 are columnar columns erected on the supported portion 210, and one end thereof is embedded and fixed in the supported portion 210. The column 220 is not limited to a columnar column, and may be a column having another shape such as a polygonal column. When the rockfall capturing unit 240 absorbs a certain amount of rockfall kinetic energy or more, the support column 220 bends in a predetermined direction and releases the rockfall kinetic energy in a predetermined direction.

［横柱２３０］
横柱２３０は、支柱２２０の他端側に架設される円柱状の柱であり、支柱２２０の上部と直接的に又は間接的に固定される。なお、横柱２３０は、円柱状の柱に限定されるものではなく、多角柱状等他の形状の柱であってもよい。横柱２３０は、断面剛性により、支柱２２０の変形の方向を定める。 [Horizontal pillar 230]
The horizontal column 230 is a columnar column erected on the other end side of the column 220, and is directly or indirectly fixed to the upper portion of the column 220. The horizontal column 230 is not limited to a columnar column, and may be a column having another shape such as a polygonal column. The horizontal column 230 determines the direction of deformation of the column 220 by the cross-sectional rigidity.

［落石捕捉部２４０］
落石捕捉部２４０は、落石が発生した際にその落石を捕捉するものである。落石捕捉部２４０は、例えば、鋼製のワイヤーロープを格子状に編んで形成されたものである。落石捕捉部２４０は、略矩形状に形成されており、落石捕捉部２４０には複数の第１支持部材２５１及び第２支持部材２５５が張り巡らされている。落石捕捉部２４０は、横柱２３０と被支持部２１０との間において複数の支柱２２０の間を覆うように配置されている。 [Rockfall capture unit 240]
The rockfall capture unit 240 captures the rockfall when it occurs. The rockfall catching portion 240 is formed, for example, by knitting a steel wire rope in a grid pattern. The rock fall catching portion 240 is formed in a substantially rectangular shape, and a plurality of first support members 251 and second support members 255 are stretched around the rock fall catching portion 240. The rockfall catching portion 240 is arranged so as to cover between the plurality of pillars 220 between the horizontal pillar 230 and the supported portion 210.

［支持部材２５０］
図２は、図１の支持部材の概略図である。図１及び図２を用いて、支持部材２５０について説明する。支持部材２５０は、図１に示すように、横柱２３０と被支持部２１０との間に配置され落石捕捉部２４０を支持するロープ状の第１支持部材２５１と、複数の支柱２２０の間に配置され落石捕捉部２４０を支持するロープ状の第２支持部材２５５とを有する。 [Support member 250]
FIG. 2 is a schematic view of the support member of FIG. The support member 250 will be described with reference to FIGS. 1 and 2. As shown in FIG. 1, the support member 250 is located between the rope-shaped first support member 251 arranged between the horizontal column 230 and the supported portion 210 and supporting the rockfall catching portion 240, and the plurality of columns 220. It has a rope-shaped second support member 255 that is arranged and supports the rockfall catching portion 240.

（第１支持部材２５１）
第１支持部材２５１は、ロープ状に形成され、横柱２３０と被支持部２１０との間に配置され落石捕捉部２４０を支持するものである。第１支持部材２５１は、例えば、鋼製のワイヤーロープで形成されている。第１支持部材２５１は、その一端が直接的又は間接的に被支持部２１０に固定され、他端が直接的又は間接的に横柱２３０に固定されている。緩衝装置１００は、図１に示すように横柱２３０と被支持部２１０との間の第１支持部材２５１に設置することができる。第１支持部材２５１は、図２に示すように、その一端が被支持部２１０に固定され、他端が緩衝装置１００と係合するロープ部材２５３と、その一端が横柱２３０に固定され、他端が緩衝装置１００と係合するロープ部材２５２とを有する。なお、第１支持部材２５１は、横柱２３０と緩衝装置１００との間に図示しない他の緩衝装置を設けてもよい。なお、緩衝装置１００が、第１支持部材２５１に設置される場合には、ロープ部材２５２と、ロープ部材２５３とが、本発明の「２本のロープ部材」に相当する。 (First support member 251)
The first support member 251 is formed in a rope shape and is arranged between the horizontal pillar 230 and the supported portion 210 to support the rock fall catching portion 240. The first support member 251 is formed of, for example, a steel wire rope. One end of the first support member 251 is directly or indirectly fixed to the supported portion 210, and the other end is directly or indirectly fixed to the horizontal column 230. As shown in FIG. 1, the shock absorber 100 can be installed on the first support member 251 between the horizontal column 230 and the supported portion 210. As shown in FIG. 2, one end of the first support member 251 is fixed to the supported portion 210, the other end is fixed to the rope member 253 that engages with the shock absorber 100, and one end thereof is fixed to the horizontal column 230. The other end has a rope member 252 that engages with the shock absorber 100. The first support member 251 may be provided with another shock absorber (not shown) between the horizontal column 230 and the shock absorber 100. When the shock absorber 100 is installed on the first support member 251 the rope member 252 and the rope member 253 correspond to the "two rope members" of the present invention.

（第２支持部材２５５）
第２支持部材２５５は、ロープ状に形成され、複数の支柱２２０の間に配置され落石捕捉部２４０を支持するものである。第２支持部材２５５は、例えば、鋼製のワイヤーロープで形成されている。第２支持部材２５５は、支柱２２０に直接的又は間接的に固定されてもよい。緩衝装置１００は、図１に示すように支柱２２０間の第２支持部材２５５に設置することができる。第２支持部材２５５は、一端が支柱２２０に固定されて他端が緩衝装置１００と係合するロープ部材２５６と、一端が隣接する他の支柱２２０に固定されて他端が緩衝装置１００と係合するロープ部材２５７とから構成され、本発明の「２本のロープ部材」に相当する。 (Second support member 255)
The second support member 255 is formed in a rope shape and is arranged between a plurality of columns 220 to support the rockfall catching portion 240. The second support member 255 is formed of, for example, a steel wire rope. The second support member 255 may be directly or indirectly fixed to the support column 220. As shown in FIG. 1, the shock absorber 100 can be installed on the second support member 255 between the columns 220. The second support member 255 has a rope member 256 having one end fixed to the support column 220 and engaging with the shock absorber 100 at the other end, and one end fixed to another adjacent support column 220 and the other end engaging with the shock absorber 100. It is composed of a matching rope member 257 and corresponds to the "two rope members" of the present invention.

［緩衝装置１００］
図３は、本発明の実施の形態１に係る緩衝装置１００の正面図である。図４は、本発明の実施の形態１に係る緩衝装置１００のＡ−Ａ線断面図である。図５は、本発明の実施の形態１に係る緩衝装置１００の側面図である。図１〜図５を用いて、緩衝装置１００について説明する。図５において矢印は、落石捕捉部２４０が落石捕捉している時にロープ部材２５２及びロープ部材２５３に作用する張力の方向を示す。なお、以下の説明では、緩衝装置１００は、第１支持部材２５１に配置されているものとする。そして、本発明に記載の「２本のロープ部材」は、第１支持部材２５１を構成するロープ部材２５２及びロープ部材２５３として説明する。緩衝装置１００が第２支持部材２５５に配置される場合には、ロープ部材２５２及びロープ部材２５３として説明する部分は、ロープ部材２５６及びロープ部材２５７に該当するものとする。 [Cushioning device 100]
FIG. 3 is a front view of the shock absorber 100 according to the first embodiment of the present invention. FIG. 4 is a sectional view taken along line AA of the shock absorber 100 according to the first embodiment of the present invention. FIG. 5 is a side view of the shock absorber 100 according to the first embodiment of the present invention. The shock absorber 100 will be described with reference to FIGS. 1 to 5. In FIG. 5, the arrow indicates the direction of the tension acting on the rope member 252 and the rope member 253 when the rockfall catching portion 240 is catching the rockfall. In the following description, it is assumed that the shock absorber 100 is arranged on the first support member 251. The "two rope members" described in the present invention will be described as the rope member 252 and the rope member 253 constituting the first support member 251. When the shock absorber 100 is arranged on the second support member 255, the portions described as the rope member 252 and the rope member 253 shall correspond to the rope member 256 and the rope member 257.

緩衝装置１００は、落石の運動エネルギーを吸収する装置の一つである。緩衝装置１００は、落石を捕捉する落石捕捉部２４０を支持するロープ状の支持部材２５０を有する落石防護装置２００に取り付けられている。緩衝装置１００は、支持部材２５０を構成し、落石捕捉時に反対方向に張力が作用するロープ部材２５２及びロープ部材２５３の２本のロープ部材の重合部分を把持する。緩衝装置１００は、第１拘束板１０と、第２拘束板２０と、中間板３０と、締結部材４０と、を有する。 The shock absorber 100 is one of the devices that absorbs the kinetic energy of falling rocks. The shock absorber 100 is attached to a rockfall protection device 200 having a rope-shaped support member 250 that supports a rockfall capture unit 240 that captures rockfalls. The shock absorber 100 constitutes the support member 250, and grips the overlapping portion of the two rope members, the rope member 252 and the rope member 253, on which tension acts in opposite directions when the rock falls. The shock absorber 100 has a first restraint plate 10, a second restraint plate 20, an intermediate plate 30, and a fastening member 40.

第１拘束板１０は、矩形の板体を折曲加工して形成したもので、平板状に形成された第１平板部１１と、第１平板部１１の短手方向の中央部分において長手方向に沿って断面円弧状に膨出した第１膨出部１２とを有する。第２拘束板２０は、矩形の板体を折曲加工して形成したもので、平板状に形成された第２平板部２１と、第２平板部２１の短手方向の中央部分において長手方向に沿って断面円弧状に膨出した第２膨出部２２とを有する。第１拘束板１０及び第２拘束板２０の長手方向の長さは、ロープ部材２５２及びロープ部材２５３に作用する張力に応じて適宜決定するものとする。第１拘束板１０及び第２拘束板２０は、ばね鋼など、引張度の高い各種金属板を使用することが望ましい。なお、第１膨出部１２及び第２膨出部２２の断面形状は、円弧形状に限定するものではなく、例えば、逆Ｖ字形状、逆Ｕ字形状、等他の断面形状であってもよい。 The first restraint plate 10 is formed by bending a rectangular plate body, and has a first flat plate portion 11 formed in a flat plate shape and a central portion in the lateral direction of the first flat plate portion 11 in the longitudinal direction. It has a first bulging portion 12 that bulges in an arc shape in cross section along the above. The second restraint plate 20 is formed by bending a rectangular plate body, and has a second flat plate portion 21 formed in a flat plate shape and a central portion in the lateral direction of the second flat plate portion 21 in the longitudinal direction. It has a second bulging portion 22 that bulges in an arc shape in cross section along the above. The lengths of the first restraint plate 10 and the second restraint plate 20 in the longitudinal direction shall be appropriately determined according to the tension acting on the rope member 252 and the rope member 253. For the first restraint plate 10 and the second restraint plate 20, it is desirable to use various metal plates having high tensile strength such as spring steel. The cross-sectional shapes of the first bulging portion 12 and the second bulging portion 22 are not limited to the arc shape, and may be, for example, other cross-sectional shapes such as an inverted V shape and an inverted U shape. good.

第１膨出部１２及び第２膨出部２２の両側の、第１平板部１１及び第２平板部２１には、長手方向に沿って、それぞれ一列にボルト孔（図示せず）が穿設されている。第１平板部１１及び第２平板部２１によるロープ部材２５２及びロープ部材２５３の拘束効果を考慮すると、ボルト孔の形成位置、すなわち締結部材４０の締結位置は、第１膨出部１２及び第２膨出部２２により近い位置が望ましい。 Bolt holes (not shown) are formed in a row in the first flat plate portion 11 and the second flat plate portion 21 on both sides of the first bulging portion 12 and the second bulging portion 22 along the longitudinal direction. Has been done. Considering the restraining effect of the rope member 252 and the rope member 253 by the first flat plate portion 11 and the second flat plate portion 21, the bolt hole forming position, that is, the fastening position of the fastening member 40 is set to the first bulging portion 12 and the second. A position closer to the bulge 22 is desirable.

第１拘束板１０及び第２拘束板２０は、お互いを重ね合わせた時に、互いに反対方向に膨出するように第１膨出部１２及び第２膨出部２２が形成されている。第１膨出部１２及び第２膨出部２２には、それぞれロープ部材２５２及びロープ部材２５３が挿通される。第１膨出部１２及び第２膨出部２２の内周面は、ロープ部材２５２及びロープ部材２５３の周面と面接触が可能な形状とする。 The first restraint plate 10 and the second restraint plate 20 are formed with a first bulge portion 12 and a second bulge portion 22 so as to bulge in opposite directions when the first restraint plate 10 and the second restraint plate 20 are overlapped with each other. A rope member 252 and a rope member 253 are inserted into the first bulging portion 12 and the second bulging portion 22, respectively. The inner peripheral surfaces of the first bulging portion 12 and the second bulging portion 22 have a shape capable of surface contact with the peripheral surfaces of the rope member 252 and the rope member 253.

中間板３０は、対峙する第１拘束板１０と第２拘束板２０との間に配置される。中間板３０は、矩形状に形成された剛性体であり、第１平板部１１及び第２平板部２１のボルト孔に併せて孔が穿設された板体である。中間板３０は、ロープ部材２５２及びロープ部材２５３の２本のロープ部材と当接する面が平滑面で形成されている。 The intermediate plate 30 is arranged between the first restraining plate 10 and the second restraining plate 20 facing each other. The intermediate plate 30 is a rigid body formed in a rectangular shape, and is a plate body having holes formed in the bolt holes of the first flat plate portion 11 and the second flat plate portion 21. In the intermediate plate 30, the surface of the rope member 252 and the rope member 253 in contact with the two rope members is formed as a smooth surface.

締結部材４０は、第１膨出部１２を介して両側に位置する第１平板部１１と、第２膨出部２２を介して両側に位置する第２平板部２１とを締付けるものである。締結部材４０は、第１膨出部１２及び第２膨出部２２に沿って、第１膨出部１２及び第２膨出部２２の両側に設けられている。締結部材４０は、ボルト４１とナット４２と有する。なお、締結部材４０は、第１拘束板１０、第２拘束板２０、及び、中間板３０と、ロープ部材２５２及びロープ部材２５３とを軟結合（所定の引っ張り力で摺動する結合）できるものであればよく、ボルト４１及びナット４２に限定されるものではない。締結部材４０の設置数は、図３〜図５に示すように、第１膨出部１２及び第２膨出部２２の両側において、片側に４箇所ずつの合計８箇所である。しかし、締結部材４０の設置数は、合計８箇所に限定するものではなく、ロープ部材２５２及びロープ部材２５３に作用する張力に応じて適宜決定するものとする。 The fastening member 40 fastens the first flat plate portion 11 located on both sides via the first bulging portion 12 and the second flat plate portion 21 located on both sides via the second bulging portion 22. Fastening members 40 are provided on both sides of the first bulging portion 12 and the second bulging portion 22 along the first bulging portion 12 and the second bulging portion 22. The fastening member 40 has a bolt 41 and a nut 42. The fastening member 40 can softly bond the first restraint plate 10, the second restraint plate 20, and the intermediate plate 30, and the rope member 252 and the rope member 253 (a bond that slides with a predetermined pulling force). However, it is not limited to the bolt 41 and the nut 42. As shown in FIGS. 3 to 5, the number of fastening members 40 installed is a total of eight locations, four on each side of the first bulging portion 12 and the second bulging portion 22. However, the number of fastening members 40 to be installed is not limited to a total of eight locations, and is appropriately determined according to the tension acting on the rope member 252 and the rope member 253.

第１膨出部１２と中間板３０との間に２本のロープ部材のうちの一方のロープ部材２５２が配置され、第２膨出部２２と中間板３０との間に２本のロープ部材のうちの他方のロープ部材２５３が配置される。第１拘束板１０及び第２拘束板２０に作用させた締結部材４０による締結力により、第１膨出部１２及び第２膨出部２２と、中間板３０とは、ロープ部材２５２及びロープ部材２５３の２本のロープ部材を挟持する。緩衝装置１００は、ロープ部材２５２及びロープ部材２５３に所定以上の張力が負荷されると緩衝装置１００に対して摺動するような摩擦力でロープ部材２５２及びロープ部材２５３を挟持している。 One of the two rope members 252 is arranged between the first bulging portion 12 and the intermediate plate 30, and the two rope members are arranged between the second bulging portion 22 and the intermediate plate 30. The other rope member 253 is arranged. The first bulging portion 12 and the second bulging portion 22 and the intermediate plate 30 are the rope member 252 and the rope member due to the fastening force by the fastening member 40 acting on the first restraining plate 10 and the second restraining plate 20. The two rope members of 253 are sandwiched. The shock absorber 100 sandwiches the rope member 252 and the rope member 253 with a frictional force that slides against the shock absorber 100 when a tension equal to or higher than a predetermined value is applied to the rope member 252 and the rope member 253.

ロープ部材２５２及びロープ部材２５３の２本のロープ部材は、それぞれロープの途中部分が挟持されている。そのため、ロープ部材２５２及びロープ部材２５３の２本のロープ部材は、それぞれ第１拘束板及び第２拘束板から所定の長さだけ延出した余長部２５２ａ及び余長部２５３ａを有しており、その端部は自由端とされている。余長部２５２ａ及び余長部２５３ａは、第１拘束板及び第２拘束板から、それぞれ反対方向に延出している。なお、２本のロープ部材を構成する支持部材２５０が、横柱２３０と被支持部２１０との間に配置され落石捕捉部２４０を支持する第１支持部材２５１である場合には、２本のロープ部材はロープ部材２５２とロープ部材２５３とから構成される。２本のロープ部材のうちの一方のロープ部材２５２は、横柱２３０に直接的又は間接的に固定され、記２本のロープ部材のうちの他方のロープ部材２５３は、被支持部２１０に直接的又は間接的に固定されている。また、２本のロープ部材を構成する支持部材２５０が、横複数の支柱２２０の間に配置され落石捕捉部２４０を支持する第２支持部材２５５である場合には、２本のロープ部材はロープ部材２５６とロープ部材２５７とから構成される。２本のロープ部材のうちの一方のロープ部材２５６は、支柱２２０に直接的又は間接的に固定され、２本のロープ部材のうちの他方のロープ部材２５７は、支柱２２０に隣接する他の支柱２２０に直接的又は間接的に固定されている。 The two rope members, the rope member 252 and the rope member 253, each have an intermediate portion of the rope sandwiched between them. Therefore, the two rope members of the rope member 252 and the rope member 253 have an extra length portion 252a and an extra length portion 253a extending from the first restraint plate and the second restraint plate by a predetermined length, respectively. , The end is a free end. The extra length portion 252a and the extra length portion 253a extend in opposite directions from the first restraint plate and the second restraint plate, respectively. When the support member 250 constituting the two rope members is the first support member 251 arranged between the horizontal column 230 and the supported portion 210 and supporting the rockfall catching portion 240, the two rope members are provided. The rope member is composed of a rope member 252 and a rope member 253. One of the two rope members, the rope member 252, is directly or indirectly fixed to the horizontal column 230, and the other rope member 253 of the two rope members is directly attached to the supported portion 210. It is fixed intentionally or indirectly. Further, when the support member 250 constituting the two rope members is the second support member 255 arranged between the plurality of lateral columns 220 and supporting the rockfall catching portion 240, the two rope members are ropes. It is composed of a member 256 and a rope member 257. One rope member 256 of the two rope members is directly or indirectly fixed to the strut 220, and the other rope member 257 of the two rope members is the other strut adjacent to the strut 220. It is directly or indirectly fixed to 220.

ロープ部材２５２及びロープ部材２５３が、第１拘束板１０及び第２拘束板２０と、中間板３０との間から抜け落ちないようにロープ部材２５２及びロープ部材２５３の端部には係止部２７０及び係止部２７１が設けられている。係止部２７０及び係止部２７１は、余長部２５２ａ及び余長部２５３ａの先端部分に設けられている。係止部２７０及び係止部２７１は、第１拘束板１０及び第２拘束板２０と、中間板３０との間に形成された開口部３５の直径よりも外側に張り出した端縁部２７０ａ及び端縁部２７１ａを有する。ロープ部材２５２及びロープ部材２５３が摺動しても、端縁部２７０ａ及び端縁部２７１ａが、第１拘束板１０と、第２拘束板２０と、中間板３０と当接する。そのため、係止部２７０及び係止部２７１は、ロープ部材２５２及びロープ部材２５３が、開口部３５から抜け落ちることを防ぐ。 A locking portion 270 and a locking portion 270 at the ends of the rope member 252 and the rope member 253 so that the rope member 252 and the rope member 253 do not fall out from between the first restraint plate 10 and the second restraint plate 20 and the intermediate plate 30. A locking portion 271 is provided. The locking portion 270 and the locking portion 271 are provided at the tip portions of the extra length portion 252a and the extra length portion 253a. The locking portion 270 and the locking portion 271 have an edge portion 270a and an edge portion 270a projecting outward from the diameter of the opening 35 formed between the first restraining plate 10 and the second restraining plate 20 and the intermediate plate 30. It has an edge portion 271a. Even if the rope member 252 and the rope member 253 slide, the end edge portion 270a and the end edge portion 271a come into contact with the first restraint plate 10, the second restraint plate 20, and the intermediate plate 30. Therefore, the locking portion 270 and the locking portion 271 prevent the rope member 252 and the rope member 253 from falling out of the opening 35.

［緩衝装置１００の動作］
ロープ部材２５２及びロープ部材２５３は、落石が捕捉されていない通常の状態では、第１拘束板１０及び第２拘束板２０と、中間板３０とに面接触して強く固定されている状態である。落石捕捉部２４０によって落石が捕捉されると、落石捕捉部２４０を支持するロープ部材２５２及びロープ部材２５３には落石による負荷が加えられ、張力が作用する。ロープ部材２５２及びロープ部材２５３に一定以上の張力が作用すると、ロープ部材２５２及びロープ部材２５３は、第１拘束板１０及び第２拘束板２０と、中間板３０との間摺動摩擦抵抗に抗しながら、第１拘束板１０及び第２拘束板２０と、中間板３０とから抜ける方向に摺動する。ロープ部材２５２及びロープ部材２５３が、摺動摩擦抵抗に抗しながら摺動することによって落石の衝撃力が緩衝されるとともにロープ部材２５２及びロープ部材２５３に作用する張力が低減する。 [Operation of shock absorber 100]
The rope member 252 and the rope member 253 are in a state where the first restraining plate 10 and the second restraining plate 20 and the intermediate plate 30 are in surface contact with each other and are strongly fixed in a normal state in which rockfall is not captured. .. When the rockfall is captured by the rockfall capture unit 240, a load due to the rockfall is applied to the rope member 252 and the rope member 253 that support the rockfall capture unit 240, and tension acts on them. When a certain tension or more is applied to the rope member 252 and the rope member 253, the rope member 252 and the rope member 253 resist the sliding frictional resistance between the first restraint plate 10 and the second restraint plate 20 and the intermediate plate 30. However, it slides in the direction of coming out of the first restraint plate 10, the second restraint plate 20, and the intermediate plate 30. By sliding the rope member 252 and the rope member 253 while resisting the sliding friction resistance, the impact force of falling rocks is buffered and the tension acting on the rope member 252 and the rope member 253 is reduced.

以上のように、緩衝装置１００は、落石捕捉時に反対方向に張力が作用するロープ部材２５２及びロープ部材２５３の２本のロープ部材の重合部分を把持するものである。そして、緩衝装置１００は、第１膨出部１２と中間板３０との間に２本のロープ部材のうちの一方のロープ部材２５２が配置され、第２膨出部２２と中間板３０との間に２本のロープ部材のうちの他方のロープ部材２５３が配置される。そのため、緩衝装置１００は、ロープ部材２５２及びロープ部材２５３が、第１拘束板１０及び第２拘束板２０と、中間板３０と面接触し、摺動摩擦抵抗に抗しながら摺動する。この際、緩衝装置１００は、２本のロープ部材が、第１拘束板１０及び第２拘束板２０と、並びに、中間板３０と面接触することで、２本のロープ部材に加わる張力の低減を一定にすることができる。また、緩衝装置１００は、ロープ部材２５２及びロープ部材２５３に加わる張力の低減を一定にすることができることで、意図した荷重でロープ部材２５２及びロープ部材２５３を摺動させることができる。 As described above, the shock absorber 100 grips the overlapping portion of the two rope members, the rope member 252 and the rope member 253, on which tension acts in opposite directions when the rock falls. Then, in the shock absorber 100, one of the rope members 252 of the two rope members is arranged between the first bulging portion 12 and the intermediate plate 30, and the second bulging portion 22 and the intermediate plate 30 are arranged. The other rope member 253 of the two rope members is arranged between them. Therefore, in the shock absorber 100, the rope member 252 and the rope member 253 come into surface contact with the first restraint plate 10 and the second restraint plate 20 and the intermediate plate 30, and slide while resisting the sliding friction resistance. At this time, the shock absorber 100 reduces the tension applied to the two rope members by causing the two rope members to come into surface contact with the first restraint plate 10 and the second restraint plate 20 and the intermediate plate 30. Can be constant. Further, since the shock absorber 100 can make the reduction of the tension applied to the rope member 252 and the rope member 253 constant, the rope member 252 and the rope member 253 can be slid with the intended load.

また、中間板３０は、ロープ部材２５２及びロープ部材２５３の２本のロープ部材と当接する面が平滑面で形成されている。そのため、緩衝装置１００は、ロープ部材２５２及びロープ部材２５３の摺動時の初期移動荷重を一定にすることができる。 Further, in the intermediate plate 30, the surface of the rope member 252 and the rope member 253 in contact with the two rope members is formed as a smooth surface. Therefore, the shock absorber 100 can make the initial moving load of the rope member 252 and the rope member 253 constant when sliding.

また、締結部材４０は、第１膨出部１２及び第２膨出部２２に沿って、第１膨出部１２及び第２膨出部２２の両側に設けられ、第１膨出部１２を介して両側に位置する第１平板部１１と、第２膨出部２２を介して両側に位置する第２平板部２１とを締結する。そのため、緩衝装置１００は、第１拘束板１０と第２拘束板２０との締結に偏心がなく、ロープ部材２５２及びロープ部材２５３は同一線上で張力が働くため、ロープ部材２５２及びロープ部材２５３に加わる張力の低減を一定にすることができる。 Further, the fastening member 40 is provided on both sides of the first bulging portion 12 and the second bulging portion 22 along the first bulging portion 12 and the second bulging portion 22, and the first bulging portion 12 is provided. The first flat plate portion 11 located on both sides thereof is fastened to the second flat plate portion 21 located on both sides via the second bulging portion 22. Therefore, in the shock absorber 100, there is no eccentricity in fastening the first restraint plate 10 and the second restraint plate 20, and tension acts on the rope member 252 and the rope member 253 on the same line. The reduction in applied tension can be constant.

また、ロープ部材２５２及びロープ部材２５３の２本のロープ部材は、第１拘束板１０及び第２拘束板２０から延出した余長部２５２ａ及び余長部２５３ａを有する。そのため、緩衝装置１００は、余長部２５２ａ及び余長部２５３ａの長さを調節することで、落石捕捉部２４０にかかる荷重が意図した吸収エネルギー（仕事量）になるまでロープ部材２５２及びロープ部材２５３を摺動させることができる。 Further, the two rope members of the rope member 252 and the rope member 253 have an extra length portion 252a and an extra length portion 253a extending from the first restraint plate 10 and the second restraint plate 20. Therefore, the shock absorber 100 adjusts the lengths of the extra length portion 252a and the extra length portion 253a so that the rope member 252 and the rope member until the load applied to the rockfall catching portion 240 reaches the intended absorption energy (work amount). The 253 can be slid.

また、ロープ部材２５２及びロープ部材２５３の２本のロープ部材は、余長部２５２ａ及び余長部２５３ａの先端部分に、第１拘束板１０及び第２拘束板２０と、中間板３０との間に形成された開口部３５の直径よりも外側に張り出した端縁部２７０ａ及び端縁部２７１ａを有する係止部２７０及び係止部２７１を備えている。そのため、緩衝装置１００は、ロープ部材２５２及びロープ部材２５３の摺動する長さを調節することで、落石捕捉部２４０にかかる荷重が意図した吸収エネルギー（仕事量）になるまでロープ部材２５２及びロープ部材２５３を摺動させることができる。 Further, the two rope members of the rope member 252 and the rope member 253 are located between the first restraint plate 10 and the second restraint plate 20 and the intermediate plate 30 at the tip portions of the extra length portion 252a and the extra length portion 253a. It is provided with a locking portion 270 and a locking portion 271 having an edge portion 270a and an edge portion 271a projecting outward from the diameter of the opening 35 formed in. Therefore, the shock absorber 100 adjusts the sliding length of the rope member 252 and the rope member 253 until the load applied to the rockfall catching portion 240 reaches the intended absorption energy (work amount) of the rope member 252 and the rope. The member 253 can be slid.

また、２本のロープ部材のうちの一方のロープ部材２５２は、横柱２３０に直接的又は間接的に固定され、２本のロープ部材のうちの他方のロープ部材２５３は、被支持部２１０に直接的又は間接的に固定されている。そのため、緩衝装置１００は、横柱２３０と被支持部２１０との間の第１支持部材２５１の張力を低減することができる。 Further, one rope member 252 of the two rope members is directly or indirectly fixed to the horizontal column 230, and the other rope member 253 of the two rope members is attached to the supported portion 210. It is fixed directly or indirectly. Therefore, the shock absorber 100 can reduce the tension of the first support member 251 between the horizontal column 230 and the supported portion 210.

前記２本のロープ部材のうちの一方のロープ部材２５６は、支柱２２０に直接的又は間接的に固定され、２本のロープ部材のうちの他方のロープ部材２５７は、支柱２２０に隣接する他の支柱２２０に直接的又は間接的に固定される。そのため、緩衝装置１００は、支柱２２０間の第２支持部材２５５の張力を低減することができる。 One rope member 256 of the two rope members is directly or indirectly fixed to the column 220, and the other rope member 257 of the two rope members is the other adjacent to the column 220. It is directly or indirectly fixed to the support column 220. Therefore, the shock absorber 100 can reduce the tension of the second support member 255 between the columns 220.

なお、本発明の実施の形態は、上記実施の形態１に限定されず、種々の変更を加えることができる。例えば、被支持部２１０は、地盤或いは擁壁等の基礎部分に限られず、鋼材（例えば、Ｈ型鋼、角形鋼管、丸形鋼管）でもよい。また、緩衝装置１００は、すべての第１支持部材２５１及び第２支持部材２５５に設ける必要はなく、第１支持部材２５１及び第２支持部材２５５において大きな張力が作用する箇所のみに設けてもよい。 The embodiment of the present invention is not limited to the first embodiment, and various modifications can be made. For example, the supported portion 210 is not limited to a foundation portion such as a ground or a retaining wall, and may be a steel material (for example, H-shaped steel, square steel pipe, round steel pipe). Further, the shock absorber 100 does not need to be provided on all the first support members 251 and the second support member 255, and may be provided only on the first support member 251 and the second support member 255 where a large tension acts. ..

１０ 第１拘束板、１１ 第１平板部、１２ 第１膨出部、２０ 第２拘束板、２１ 第２平板部、２２ 第２膨出部、３０ 中間板、３５ 開口部、４０ 締結部材、４１ ボルト、４２ ナット、１００ 緩衝装置、２００ 落石防護装置、２１０ 被支持部、２２０ 支柱、２３０ 横柱、２４０ 落石捕捉部、２５０ 支持部材、２５１ 第１支持部材、２５２ ロープ部材、２５２ａ 余長部、２５３ ロープ部材、２５３ａ 余長部、２５５ 第２支持部材、２５６ ロープ部材、２５７ ロープ部材、２７０ 係止部、２７０ａ 端縁部、２７１ 係止部、２７１ａ 端縁部。 10 1st restraint plate, 11 1st flat plate, 12 1st bulge, 20 2nd restraint, 21 2nd flat plate, 22 2nd bulge, 30 intermediate plate, 35 opening, 40 fastening member, 41 bolts, 42 nuts, 100 shock absorbers, 200 rock fall protection devices, 210 supported parts, 220 columns, 230 horizontal columns, 240 rock fall catching parts, 250 support members, 251 first support members, 252 rope members, 252a extra length parts. , 253 rope member, 253a extra length part, 255 second support member, 256 rope member, 257 rope member, 270 locking part, 270a edge part, 271 locking part, 271a edge part.

Claims (8)

落石を捕捉する落石捕捉部を支持するロープ状の支持部材を有する落石防護装置に取り付けられ、前記支持部材を構成し、落石捕捉時に反対方向に張力が作用する２本のロープ部材の重合部分を把持する緩衝装置であって、
平板状に形成された第１平板部と、前記第１平板部の短手方向の中央部分において長手方向に沿って膨出した第１膨出部とを有する第１拘束板と、
平板状に形成された第２平板部と、前記第２平板部の短手方向の中央部分において長手方向に沿って膨出した第２膨出部とを有する第２拘束板と、
前記第１拘束板と前記第２拘束板との間に配置される中間板と、
前記第１拘束板の前記第１平板部と前記第２拘束板の前記第２平板部とを締付ける締結部材と、
を有し、
前記第１膨出部と前記中間板との間に前記２本のロープ部材のうちの一方のロープ部材が配置され、
前記第２膨出部と前記中間板との間に前記２本のロープ部材のうちの他方のロープ部材が配置される緩衝装置。 A laminated portion of two rope members that are attached to a rockfall protection device having a rope-shaped support member that supports a rockfall capture portion that captures the rockfall, constitutes the support member, and tension acts in the opposite direction when the rockfall is captured. It is a shock absorber that grips
A first restraint plate having a first flat plate portion formed in a flat plate shape and a first bulging portion bulging along the longitudinal direction in the central portion in the lateral direction of the first flat plate portion.
A second restraint plate having a second flat plate portion formed in a flat plate shape and a second bulging portion bulging along the longitudinal direction in the central portion in the lateral direction of the second flat plate portion.
An intermediate plate arranged between the first restraint plate and the second restraint plate,
A fastening member for tightening the first flat plate portion of the first restraint plate and the second flat plate portion of the second restraint plate.
Have,
One of the two rope members is arranged between the first bulging portion and the intermediate plate.
A shock absorber in which the other rope member of the two rope members is arranged between the second bulging portion and the intermediate plate. 前記第１膨出部及び前記第２膨出部は、前記中間板を介して互いに対向するように前記第１平板部及び前記第２平板部の長手方向に沿って延設されている請求項１に記載の緩衝装置。A claim that the first bulging portion and the second bulging portion are extended along the longitudinal direction of the first flat plate portion and the second flat plate portion so as to face each other via the intermediate plate. The shock absorber according to 1. 前記中間板は、前記２本のロープ部材と当接する面が平滑面で形成されている請求項１又は２に記載の緩衝装置。 The shock absorber according to claim 1 or 2 , wherein the intermediate plate has a smooth surface having a surface in contact with the two rope members. 前記締結部材を複数有し、複数の前記締結部材は、前記第１膨出部及び前記第２膨出部に沿って、前記第１膨出部及び前記第２膨出部の両側に設けられ、前記第１膨出部を介して両側に位置する前記第１平板部と、前記第２膨出部を介して両側に位置する前記第２平板部とを締結する請求項１〜３のいずれか１項に記載の緩衝装置。 It has a plurality of fastening members, and the plurality of fastening members are provided on both sides of the first bulging portion and the second bulging portion along the first bulging portion and the second bulging portion. any the said first flat plate portion in which the first through the bulging portion located on both sides, according to claim 1 to 3 for fastening the said second flat portion located on both sides via the second bulging portion The shock absorber according to claim 1. 落石を捕捉する落石捕捉部と、
落石捕捉時に反対方向に張力が作用する２本のロープ部材を有し、前記落石捕捉部を支持するロープ状の支持部材と、
請求項１〜４のいずれか１項に記載の緩衝装置であって、前記２本のロープ部材の重合部分を把持する緩衝装置と、
を有し、
前記２本のロープ部材は、前記第１拘束板及び前記第２拘束板から延出した余長部を有する落石防護装置。 A rockfall catching part that catches rockfalls,
A rope-shaped support member having two rope members in which tension acts in opposite directions when trapping rockfalls and supporting the rockfall trapping portion, and a rope-shaped support member.
The shock absorber according to any one of claims 1 to 4, wherein the shock absorber grips the overlapped portion of the two rope members.
Have,
The two rope members are a rockfall protection device having an extra length portion extending from the first restraint plate and the second restraint plate. 前記２本のロープ部材は、前記余長部の先端部分に、前記第１拘束板及び前記第２拘束板と、前記中間板との間に形成された開口部の直径よりも外側に張り出した端縁部を有する係止部を備えた請求項５に記載の落石防護装置。 The two rope members project from the tip of the extra length portion to the outside of the diameter of the opening formed between the first restraint plate and the second restraint plate and the intermediate plate. The rock fall protection device according to claim 5 , further comprising a locking portion having an edge portion. 被支持部に固定される複数の支柱と、前記複数の支柱の間に架設された横柱と、を更に有し、
前記２本のロープ部材のうちの一方のロープ部材は、前記横柱に直接的又は間接的に固定され、
前記２本のロープ部材のうちの他方のロープ部材は、前記被支持部に直接的又は間接的に固定される請求項５又は６に記載の落石防護装置。 It further has a plurality of columns fixed to the supported portion and a horizontal column erected between the plurality of columns.
One of the two rope members is directly or indirectly fixed to the horizontal column.
The rock fall protection device according to claim 5 or 6 , wherein the other rope member of the two rope members is directly or indirectly fixed to the supported portion. 被支持部に固定される複数の支柱を更に有し、
前記２本のロープ部材のうちの一方のロープ部材は、前記支柱に直接的又は間接的に固定され、
前記２本のロープ部材のうちの他方のロープ部材は、前記支柱に隣接する他の前記支柱に直接的又は間接的に固定される請求項５又は６に記載の落石防護装置。 Further comprising a plurality of struts which are fixed to the support part,
One of the two rope members is directly or indirectly fixed to the support column.
The rock fall protection device according to claim 5 or 6 , wherein the other rope member of the two rope members is directly or indirectly fixed to the other support column adjacent to the support column.
JP2017184382A 2017-09-26 2017-09-26 Shock absorber and rockfall protection Active JP6979838B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2017184382A JP6979838B2 (en) 2017-09-26 2017-09-26 Shock absorber and rockfall protection

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2017184382A JP6979838B2 (en) 2017-09-26 2017-09-26 Shock absorber and rockfall protection

Publications (2)

Publication Number Publication Date
JP2019060104A JP2019060104A (en) 2019-04-18
JP6979838B2 true JP6979838B2 (en) 2021-12-15

Family

ID=66176315

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2017184382A Active JP6979838B2 (en) 2017-09-26 2017-09-26 Shock absorber and rockfall protection

Country Status (1)

Country Link
JP (1) JP6979838B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114457821A (en) * 2022-03-01 2022-05-10 泰州学院 Ecological restoration is with hillside block fixed establishment

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5732935A (en) * 1996-08-09 1998-03-31 Codario, Jr.; Samuel C. Golf barrier cross bracing system
JP2003301418A (en) * 2002-04-05 2003-10-24 Mai Sumisato Device and method for gripping rope material for shock absorption
JP2004162486A (en) * 2002-11-15 2004-06-10 Nippon Zenith Pipe Co Ltd Guard fence
JP2005240388A (en) * 2004-02-26 2005-09-08 Kanamori Tobei Shoji Kk Multistage energy absorbing rock fall protecting fence
JP4874925B2 (en) * 2007-10-10 2012-02-15 新日本製鐵株式会社 Prevention fence such as falling rocks
JP2015078485A (en) * 2013-10-15 2015-04-23 日本プロテクト株式会社 Wire rope fastening fitting

Also Published As

Publication number Publication date
JP2019060104A (en) 2019-04-18

Similar Documents

Publication Publication Date Title
JP4188998B2 (en) Shock absorbing fence
JP4874925B2 (en) Prevention fence such as falling rocks
JP3413571B2 (en) Shock absorbing protective fence and shock absorbing method
JP4590485B1 (en) Shock absorber for protective fence network
KR20150034826A (en) Support post structure
JP5595325B2 (en) Protective fence
JP5142082B2 (en) Protective fence
JP6845467B2 (en) Guard fence
JP4410743B2 (en) Shock absorbing fence
JP5953281B2 (en) Protective fence
JP6979838B2 (en) Shock absorber and rockfall protection
JP6188242B2 (en) Prop unit
JP6973767B2 (en) Rockfall guard rail
JP3860741B2 (en) Shock absorbing fence and shock absorbing method
JP4996198B2 (en) Shock absorbing fence
JP2649894B2 (en) Shock absorbing fence
JP7202586B1 (en) protective fence
JP3639950B2 (en) Shock absorbing fence
JP7034464B2 (en) Rockfall guard rail
JP2003003425A (en) Shock-absorbing guard fence
JP3433350B2 (en) Impact absorbing net and impact absorbing method
JP2907212B1 (en) Shock absorbing fence
JP6957266B2 (en) A shock absorber and a rockfall protection device equipped with this shock absorber
JP2002322616A (en) Protection net and protection fence
JP3555139B2 (en) Shock absorbing fence

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20200701

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20210521

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20210608

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20210721

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20211102

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20211116

R150 Certificate of patent or registration of utility model

Ref document number: 6979838

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150