JP7421784B1 - Ladders and installation methods for climbing over trespassing fences - Google Patents

Ladders and installation methods for climbing over trespassing fences Download PDF

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JP7421784B1
JP7421784B1 JP2023193167A JP2023193167A JP7421784B1 JP 7421784 B1 JP7421784 B1 JP 7421784B1 JP 2023193167 A JP2023193167 A JP 2023193167A JP 2023193167 A JP2023193167 A JP 2023193167A JP 7421784 B1 JP7421784 B1 JP 7421784B1
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佳顕 山本
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株式会社フェアデザイン
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Abstract

【課題】軽量で持ち運び容易な、立入り防止柵の乗越え梯子及び設置方法を提供する。【解決手段】立入り防止柵1を乗り越えるための乗越え梯子2であって、乗越え梯子は、吊り梯子3と手摺4とを備え、吊り梯子は、胴縁用鉤31と、鋼索32と、井桁踏板33とから構成し、胴縁用鉤は、逆U字形状で乗越え防止柵の上側胴縁111を跨いで掛けられ、胴縁用鉤の両側下端に連結された鋼索により、井桁踏板は吊り下げられ、手摺は、乗越え手摺41と支柱部42とから構成し、乗越え手摺には、立入り防止柵の上側胴縁の部材に対応した胴縁掛金具411を有し、支柱部の下端には、立入り防止柵の下側胴縁112と連結固定する固定治具を有した、立入り防止柵の乗越え梯子及び設置方法。【選択図】図2An object of the present invention is to provide a lightweight and easily portable ladder for climbing over an entry prevention fence and an installation method. [Solution] A climbing ladder 2 for climbing over an access prevention fence 1, the climbing ladder includes a hanging ladder 3 and a handrail 4, and the hanging ladder has a hook 31 for a trunk edge, a steel cable 32, and a cross tread. 33, the rim hook is in an inverted U shape and is hung across the upper rim 111 of the climbing prevention fence, and the cross tread is suspended by steel cables connected to the lower ends of both sides of the rim hook. The handrail is composed of a climbing handrail 41 and a pillar part 42, and the climbing handrail has a rim hook 411 corresponding to a member of the upper rim of the trespassing fence, and the lower end of the pillar part is A ladder and installation method for climbing over an entry prevention fence, which has a fixing jig for connecting and fixing the lower edge 112 of the entry prevention fence. [Selection diagram] Figure 2

Description

本発明は、梯子と手摺を分離して、軽量で持ち運び容易な、立入り防止柵の乗越え梯子に関するものである。 The present invention relates to a ladder for climbing over an entry-prevention fence that is lightweight and easy to carry, with the ladder and handrail separated.

点検業務や維持清掃作業のため、立入り防止柵を乗り越える必要がある。その際、立入り防止柵の金網につま先をかけての乗り越えでは、つま先が外れて転落事故となる危険がある。このため、立入り防止柵に足場を取付ける製品が、いくつか販売されている。しかしながら、これらの販売事例の商品には、立入り止柵を乗り越えるときに体を支持する物がないので、安全に立入り防止柵を乗り越えられないという課題がある。 For inspection work and maintenance and cleaning work, it is necessary to climb over a barrier to prevent entry. At that time, if the person tries to climb over the wire mesh of the trespassing fence, there is a risk that the toe may come off and cause a fall. For this reason, there are several products on the market that attach scaffolding to trespassing fences. However, the products in these sales examples do not have anything to support the body when climbing over the trespassing fence, so there is a problem that the product cannot be safely climbed over the trespassing fence.

特許文献1には、立入り防止柵としての金網型フェンスに着脱自在なフック2を設けた支柱1に、滑り止めチャンネル6を設けた踏み板3を取り付け、支柱1と踏み板3にスライドアーム4を取り付けた、フェンス用携帯足場が記載され、脚立を使用せずに安全にフェンスを乗り越えることができることが、記載されている。 Patent Document 1 discloses that a footboard 3 provided with an anti-slip channel 6 is attached to a post 1 provided with a removable hook 2 on a wire mesh fence serving as an entry prevention fence, and a slide arm 4 is attached to the post 1 and the footboard 3. It also describes a portable scaffolding for fences, which states that it is possible to safely climb over fences without using a stepladder.

特許文献2には、第2図の非常梯子において、窓の棧や横木に引っかけて梯子全体を保持するための金具となる保持金具1の、先端の小孔につり紐を通し、棚板3~棚板6が等距離に固定され、各棚板は側面がはめ込み式となり、この各棚板を取りはずすことにより連続した梯子段となる組合せをもった非常梯子が、記載されている。 Patent Document 2 discloses that in the emergency ladder shown in Fig. 2, a hanging cord is passed through a small hole at the tip of a holding fitting 1, which is a fitting for holding the entire ladder by hanging it on a window beam or crosspiece, and a shelf board 3 is attached. - An emergency ladder is described in which the shelves 6 are fixed at equal distances, the sides of each shelf are inset, and when the shelves are removed, a continuous ladder rung is created.

特許文献3には、窓の内側又は屋上等に設けたる梯子を、容置し得へる容こう7内にロープ取付部8を突設し、之に容こう7の周縁を越えて外方に垂下せしむるに足る長さのワイヤーロープ3の一端を取付け、各ワイヤーロープの他端に、連鎖1とステップ2とより成る梯子の、最上部のステップの両側二隅に、連結せる連鎖1を夫々連結し、而かも連鎖1は一本の金属杆aの両端部bcを環状に屈曲し、互に行違わせ且両端を夫々金属杆aの中央部に捲附けたる敷多の連環4の連続より成り、一定間隔を存してステップ2を連鎖1に堅持せしむべく、ステップ2の四隅に設けたる又状部に依り、連環4に於ける環状に屈曲せる両端部bcを、挟持せしめて成る救難梯子の構造が、記載されている。 Patent Document 3 discloses that a rope attachment part 8 is provided protruding inside a container 7 that can house a ladder installed inside a window or on a rooftop, etc. Attach one end of a wire rope 3 of a length sufficient to hang the wire rope, and connect the chain 1 to the other end of each wire rope to two corners on both sides of the top step of a ladder consisting of a chain 1 and a step 2. , and the chain 1 is a chain 4 in which both ends bc of one metal rod a are bent into an annular shape, the ends are crossed, and both ends are wrapped around the center of the metal rod a. In order to firmly hold the step 2 to the chain 1 at a constant interval, both ends bc of the chain ring 4 which are bent into an annular shape are held by the fork-shaped parts provided at the four corners of the step 2. The structure of a rescue ladder consisting of at least one is described.

特許文献4には、上下方向に配置された複数本の横桟1と、上下に隣接する横桟1の両端部同士を連結する折り畳み自在な縦材2と、各横桟1に取り付けられた棒状の突子3と、最上段の横桟1に取り付けられた吊り下げ金具4とを備え、不使用時には縦材2が折り畳まれて横桟同士が当接する折り畳み状態になると共に、使用時には吊り下げ金具4が建物の窓枠等に掛けられて建物壁面Wに沿って伸長垂下状態になる避難梯子に於いて、上下に隣接する横桟1の対向する面の一方の面に、横桟1の長手方向に沿う凸部1aを、又、他方の面に、前記凸部1aに嵌合される凹部1bを夫々形成する避難梯子が、記載されている。 Patent Document 4 describes a plurality of horizontal bars 1 arranged in the vertical direction, a foldable vertical member 2 that connects both ends of vertically adjacent horizontal bars 1, and a vertical member 2 attached to each horizontal bar 1. It is equipped with a rod-shaped protrusion 3 and a hanging metal fitting 4 attached to the top horizontal bar 1, and when not in use, the vertical member 2 is folded into a folded state where the horizontal bars are in contact with each other, and when in use, it can be hung. In an evacuation ladder in which the lowering bracket 4 is hung on a window frame or the like of a building and extends and hangs down along the building wall surface W, the horizontal rungs 1 are attached to one of the opposing surfaces of the horizontal rungs 1 that are vertically adjacent to each other. An evacuation ladder is described in which a convex portion 1a is formed along the longitudinal direction of the evacuation ladder, and a concave portion 1b that is fitted into the convex portion 1a is formed on the other side.

登録実用新案公報第3060018号Registered utility model publication No. 3060018 実公昭47-4222号Actual Publication No. 47-4222 実公昭8―16285号Actual Publication No. 8-16285 特開平7―238760Japanese Patent Publication No. 7-238760

従来、特許文献1に記載の発明は、立入り防止柵のフェンス乗越え用携帯足場であり、小型・軽量で、折りたたむことにより持ち運びが容易と記載されている。しかしながら、踏み板3は1段で、支柱1はフェンスの上端までしかない。このため高いフェンスでは、踏み板3が多数必要で重量が増加し、大型・重量となる。また乗り越える際、体を支える手摺がなく安全上問題がある。特許文献2に記載の発明は、窓の棧や横木に引っかけて梯子全体を保持する非常梯子であり、日常は棚板を接続して家具として使用できる、非常梯子兼つり棚である。このため、非常梯子兼つり棚を持ち運ぶことは困難であり、乗り越える際の手摺はない。特許文献3に記載の発明は、窓の内側又は屋上等に設けたロープ取付部8に、ワイヤーロープ3の一端を取付け、さらに連鎖1を垂らして、ステップ2の四隅を支持した、特に火災に際して強度低減を生じない救難梯子である。このため、重量も重く持ち運ぶことは困難であり、乗り越える際の手摺はない。特許文献4に記載の発明は、吊り下げ金具4と、折り畳み自在な縦材2と、複数本の横桟1とを備えた、アルミ角パイプにより折り畳み可能とした避難梯子で、持ち運ぶことは困難であり、乗り越える際の手摺はない。 Conventionally, the invention described in Patent Document 1 is a portable scaffold for climbing over a fence for preventing trespassing, and is described as being small and lightweight, and easy to carry by folding. However, the footboard 3 has one step, and the support 1 only extends to the top of the fence. For this reason, a tall fence requires a large number of treads 3, which increases the weight, resulting in a large and heavy fence. There are also safety issues as there are no handrails to support your body when climbing over. The invention described in Patent Document 2 is an emergency ladder that is hung on a window ledge or crosspiece to hold the entire ladder, and is an emergency ladder and hanging shelf that can be used as furniture by connecting shelf boards on a daily basis. For this reason, it is difficult to carry the emergency ladder and hanging shelf, and there are no handrails for climbing over. The invention described in Patent Document 3 is such that one end of a wire rope 3 is attached to a rope attachment part 8 provided inside a window or on a roof, etc., and a chain 1 is further hung to support the four corners of the step 2. Especially in the event of a fire, This is a rescue ladder that does not cause strength reduction. For this reason, it is heavy and difficult to carry, and there are no handrails for climbing over it. The invention described in Patent Document 4 is an evacuation ladder that is foldable with an aluminum square pipe and includes a hanging fitting 4, a vertical member 2 that can be folded freely, and a plurality of horizontal bars 1, and is difficult to carry. There are no handrails to climb over.

本発明は上記の問題に鑑みてなされたものである。乗り越える際の手摺を備え、梯子と手摺を分離して、軽量で持ち運び容易な、立入り防止柵の乗越え梯子及び設置方法を提供することを目的とする。 The present invention has been made in view of the above problems. To provide a lightweight and easy-to-carry ladder for climbing over an entry-prevention fence and an installation method by having a handrail for climbing over and separating the ladder and handrail.

本願請求項1に係る発明は、立入り防止柵を乗り越えるための乗越え梯子であって、前記乗越え梯子は、吊り梯子と手摺とを備え、前記吊り梯子は、胴縁用鉤と、鋼索と、井桁踏板とから構成し、前記胴縁用鉤は、逆U字形状で前記立入り防止柵の上側胴縁を跨いで掛けられ、前記逆U字形状の両側下端に連結された前記鋼索により、前記井桁踏板は吊り下げられ、前記手摺は、乗越え手摺と、前記乗越え手摺に連結された支柱部を備え、前記乗越え手摺は、前記上側胴縁の部材に対応した胴縁掛金具を有し、前記支柱部の下端には、前記立入り防止柵の下側胴縁と連結固定する固定治具を有することを特徴とする乗越え梯子である。 The invention according to claim 1 of the present application is a climbing ladder for climbing over an entry prevention fence, wherein the climbing ladder includes a hanging ladder and a handrail, and the hanging ladder has a hook for a trunk edge, a steel cable, and a cross. The rim hook has an inverted U-shape and is hung across the upper rim of the trespassing fence, and is connected to the steel cables connected to both lower ends of the inverted U-shape, and The tread is suspended, and the handrail includes a climbing handrail and a support column connected to the climbing handrail, and the climbing handrail has a rim hook corresponding to a member of the upper rim; The climbing ladder is characterized in that the lower end of the climbing ladder has a fixing jig for connecting and fixing the lower edge of the entry prevention fence.

本願請求項2に係る発明は、前記井桁踏板は、一対の棒状の縦桁と、前記縦桁と直して連結された一対の棒状の横桁とから構成し、前記縦桁の両端部には、前記鋼索と連結するための鋼索用孔を有することを特徴とする請求項1に記載の乗越え梯子である。 In the invention according to claim 2 of the present application, the parallel girder tread is composed of a pair of rod-shaped vertical beams and a pair of rod-shaped cross beams connected orthogonally to the vertical beams, and both ends of the vertical beams are 2. The climbing ladder according to claim 1, wherein the ladder has a steel cable hole for connecting with the steel cable.

本願請求項3に係る発明は、前記支柱部は、一対の鉛直材と、前記鉛直材と直して連結された上水平材と下水平材とから構成し、前記下水平材は、前記固定治具を有し、前記固定治具は、下側胴縁固定鎖と、鎖用鉤とから構成されたことを特徴とする請求項1に記載の乗越え梯子である。 In the invention according to claim 3 of the present application, the support section includes a pair of vertical members, and an upper horizontal member and a lower horizontal member connected perpendicularly to the vertical members, and the lower horizontal member is 2. The climbing ladder according to claim 1, further comprising a fixing jig, wherein the fixing jig includes a lower rim fixing chain and a chain hook.

本願請求項4に係る発明は、前記胴縁掛金具は、鋼管タイプ用掛金具と、山形鋼タイプ用掛金具とから構成されたことを特徴とする請求項1に記載の乗越え梯子である。 The invention according to claim 4 of the present application is the climbing ladder according to claim 1, characterized in that the furring hook is comprised of a steel pipe type hook and an angle iron type hook.

本願請求項5に係る発明は、請求項1に記載の乗越え梯子の設置方法であって、前記胴縁用鉤を前記立入り防止柵の前記上側胴縁を跨いで掛ける工程と、前記胴縁用鉤の一端に前記鋼索を連結し、前記井桁踏板を吊り下げ展開する工程と、前記胴縁用鉤の他端に前記鋼索を連結し、前記井桁踏板を結束した状態で保持する工程と、前記乗越え手摺の前記胴縁掛金具を、前記立入り防止柵の前記上側胴縁の部材に対応して固定する工程と、前記立入り防止柵の前記下側胴縁と前記支柱部を、前記固定治具により連結固定する工程と、前記乗越え手摺を使用して、前記井桁踏板の結束を解除して展開する工程と、を少なくとも備えたことを特徴とする乗越え梯子の設置方法である。 The invention according to claim 5 of the present application is a method for installing a climbing ladder according to claim 1, which includes the step of hanging the upper edge hook of the access prevention fence astride the upper edge of the access prevention fence; a step of connecting the steel cable to one end of the hook and suspending and deploying the double digit tread; a step of connecting the steel cable to the other end of the body hook and holding the double digit tread in a tied state; a step of fixing the rim hook of the handrail in correspondence with the upper rim member of the trespassing prevention fence, and fixing the lower rim and the support portion of the trespassing prevention fence using the fixing jig. This method of installing a climbing ladder is characterized by comprising at least a step of connecting and fixing the climbing ladder by using the climbing handrail, and a step of untying and deploying the parallel ladder tread using the climbing handrail.

本発明によれば、立入り防止柵を乗り越えるための乗越え梯子は、吊り梯子と手摺とを備えており、手摺を使用して安全に乗り越えることができる。また、吊り梯子は、鋼索と井桁踏板から構成され、軽量で持ち運びが容易である。そして、逆U字形状の胴縁用鉤を立入り防止柵の上側胴縁に配設することにより、立入り防止柵の内側及び外側である胴縁用鉤の両側下端に、吊り梯子を簡単に設置できる。さらに、乗越え手摺は、立入り防止柵の上側胴縁の部材に対応した胴縁用鉤留金具を有しており、日本全国のどの地域の立入り防止柵の上側胴縁に、設置可能である。さらに、手摺は支柱部の固定治具により立入り防止柵の下側胴縁と、確実に連結固定される。 According to the present invention, the climbing ladder for climbing over the trespassing fence includes a hanging ladder and a handrail, and the climbing ladder can be used to climb over the trespassing fence safely. In addition, the hanging ladder is composed of steel cables and cross treads, and is lightweight and easy to carry. By placing the inverted U-shaped rim hooks on the upper rim of the trespassing fence, hanging ladders can be easily installed at the lower ends of both sides of the rim hooks on the inside and outside of the trespassing fence. can. Furthermore, the handrail has a hook fitting for the rim that corresponds to the member of the upper rim of the trespass prevention fence, and can be installed on the upper rim of the trespass prevention fence in any region in Japan. Further, the handrail is reliably connected and fixed to the lower edge of the trespassing fence by the fixing jig of the support column.

加えて、井桁踏板は、縦桁と横桁とを有し、縦桁の両端部の鋼索用孔により鋼索と連結され、軽量で持ち運びが容易である。 In addition, the double cross tread has a vertical beam and a cross beam, and is connected to the steel cables through steel cable holes at both ends of the vertical beam, making it lightweight and easy to carry.

加えて、支柱部の下端は下側胴縁固定鎖と鎖用鉤からなる固定治具を有し、下側胴縁固定鎖の一端を下側胴縁の上側から下側に通して鎖用鉤に掛けることにより、容易に支柱部を連結固定することができる。 In addition, the lower end of the strut has a fixing jig consisting of a lower armour-fixing chain and a chain hook, and one end of the lower armour-fixing chain is passed from the upper side of the lower armour to the lower side to attach the chain. By hanging on the hook, the support can be easily connected and fixed.

加えて、胴縁掛金具は、地域特性に対応した鋼管タイプ用掛金具と山形鋼タイプ用掛金具とから構成されており、全国の地域に適用可能である。 In addition, the furring fittings are composed of steel pipe type fittings and angle iron type fittings that correspond to regional characteristics, and can be applied to regions throughout the country.

加えて、乗越え梯子は、一の井桁踏板を吊り下げ展開し、他の井桁踏板を結束した状態で保持し、乗越え手摺を使用して、他の井桁踏板の結束を解除して展開する工程により、安全・容易に立入り防止柵の内側及び外側に、乗越え梯子を設置できる。 In addition, the climbing ladder is constructed by a process of suspending and deploying the first double-crossing tread, holding the other double-crossing treads in a tied state, and using the climbing handrail to untie and deploy the other double-crossing treads. , ladders can be safely and easily installed inside and outside of the access prevention fence.

本発明の実施例1に係る乗越え梯子を、立入り防止柵(山形鋼タイプ)に設置した概要図で、(a)は正面図、(b)は側面図である。1 is a schematic view of a climbing ladder according to Example 1 of the present invention installed on an access prevention fence (angle iron type), in which (a) is a front view and (b) is a side view. 本発明の実施例2に係る吊り梯子で、(a)は正面図、(b)は側面図、(c)は平面図、(d)は胴縁用鉤の詳細図である。A hanging ladder according to Example 2 of the present invention, in which (a) is a front view, (b) is a side view, (c) is a plan view, and (d) is a detailed view of the hook for the trunk edge. 本発明の実施例3に係る井桁踏板で、(a)は平面図、(b)は正面図、(c)は側面図である。3(a) is a plan view, (b) is a front view, and (c) is a side view of a parallel treadle according to Example 3 of the present invention. FIG. 本発明の実施例4に係る手摺で、(a)は斜視図、(b)は側面図である。A handrail according to Example 4 of the present invention, in which (a) is a perspective view and (b) is a side view. 本発明の実施例5に係る手摺の支柱部で、(a)は正面図、(b)は平面図、(c)は側面図、(d)は固定治具の詳細図である。FIG. 11A is a front view, FIG. 17B is a plan view, FIG. 12C is a side view, and FIG. 13D is a detailed view of a fixing jig, showing a support section of a handrail according to a fifth embodiment of the present invention. 立入り防止柵(鋼管タイプ)の組立図である。It is an assembly diagram of the entry prevention fence (steel pipe type). 立入り防止柵(山形鋼タイプ)の組立図である。It is an assembly drawing of the trespass prevention fence (angle iron type).

以下、図面に基づき本発明の好適な実施形態について詳細に説明する。なお、本発明は、以下に説明する実施形態に限定されないことは言うまでもない。また、以下に記載する各部材等の材質、形状及び寸法は、実施例としての一例であり、変更することは設計的事項である。 Hereinafter, preferred embodiments of the present invention will be described in detail based on the drawings. Note that it goes without saying that the present invention is not limited to the embodiments described below. Further, the materials, shapes, and dimensions of each member described below are examples as examples, and changes are a matter of design.

<座標軸>
図面には、座標軸としてX軸、Y軸及びZ軸を記載している。道路の車線方向をX軸、
本線側から側道側をY軸、道路面に対して鉛直に起立した上方向をZ軸方向としている。
<Coordinate axis>
In the drawings, the X-axis, Y-axis, and Z-axis are shown as coordinate axes. The direction of the road lane is the X axis,
The Y axis is from the main road side to the side road side, and the Z axis is the upward direction perpendicular to the road surface.

<定義>
上、下:道路面に対して鉛直に起立した軸(Z軸方向)に対し、道路面と反対側(Z軸プラス方向)を「上」、道路面側(Z軸マイナス方向)を「下」とする。
<Definition>
Top, bottom: With respect to the axis perpendicular to the road surface (Z-axis direction), the side opposite to the road surface (Z-axis positive direction) is "top", and the road surface side (Z-axis negative direction) is "bottom". ”.

<立入り防止柵の乗越え梯子の概要>
図1は、本発明の実施例1に係る乗越え梯子2を、立入り防止柵1(山形鋼タイプ)に設置した概要図で、(a)は正面図、(b)は側面図である。乗越え梯子2は、1対の吊り梯子3・3と手摺4から構成されている。立入り防止柵1の上側胴縁111に胴縁用鉤31を介して、1対の吊り梯子3・3を立入り防止柵1の本線側15及び側線側16に吊り下げて展開している。さらに、吊り梯子3の車線方向両側には、手摺4が設置されている。このため、立入り防止柵1を、手摺4を使用して吊り梯子3により昇り、乗り越える際には、立入り防止柵1より上側に伸びている手摺4を使用して安全に、本線側15から側線側16に乗り越えることができる。なお、実施例1では、本線側15から乗越え梯子2を設置して、側線側16に乗り越えているが、逆の場合も同様である。
<Overview of ladder for climbing over trespassing fence>
FIG. 1 is a schematic view of a climbing ladder 2 according to Embodiment 1 of the present invention installed on an intrusion prevention fence 1 (angle iron type), in which (a) is a front view and (b) is a side view. The climbing ladder 2 is composed of a pair of hanging ladders 3, 3 and a handrail 4. A pair of hanging ladders 3, 3 are suspended from the main line side 15 and the side line side 16 of the trespassing prevention fence 1 via a rim hook 31 on the upper side rim 111 of the trespassing prevention fence 1 and deployed. Furthermore, handrails 4 are installed on both sides of the hanging ladder 3 in the lane direction. Therefore, when climbing up and over the trespassing prevention fence 1 using the handrail 4 using the hanging ladder 3, you can use the handrail 4 extending above the trespassing prevention fence 1 to safely move from the main line side 15 to the side line. You can climb over to side 16. In the first embodiment, the climbing ladder 2 is installed from the main line side 15 to climb over to the side line side 16, but the same applies to the reverse case.

<吊り梯子>
図2は、本発明の実施例2に係る吊り梯子3の図である。吊り梯子3は、胴縁用鉤31と、鋼索32(ワイヤーロープ)と、井桁踏板33とから構成されている。(a)は正面図、(b)は側面図、(c)は平面図である。
<Hanging ladder>
FIG. 2 is a diagram of a hanging ladder 3 according to a second embodiment of the present invention. The hanging ladder 3 is composed of a trunk hook 31, a steel cable 32 (wire rope), and a parallel tread 33. (a) is a front view, (b) is a side view, and (c) is a plan view.

胴縁用鉤31・31は、一例として逆U字形状で立入り防止柵1の上側胴縁111に、吊り梯子3の鋼索32・32の横幅(X軸方向)の間隔で、車線方向(X軸方向)に1対設置される。そして、逆U字形状の両側(Y軸方向)下端に吊り梯子3・3を、本線側15と側道側16に吊下げるものである。立入り防止柵1の上側胴縁111は、地域特性により山形鋼タイプ(L40×40mm)と鋼管タイプ(φ76.8mm)との2種類がある(図6、7を参照)。このため、胴縁用鉤31は、両タイプの上側胴縁111に対して、安定して跨いで掛けられ逆U字形状となっている。そして、胴縁用鉤31は、山形鋼タイプと鋼管タイプを、内側上部で安定支持できる、一例として内半径r=39mm、外半径r=59mm、高さH=99mm、厚さt=5mmの、逆U字の形状をアルミニュウム板材で形成している。そして、逆U字形状の両側下端には各鋼索用孔31a(φ8mm)を有し、鋼索用孔31aに留金具31b(一例としてカラビナ)を介して、鋼索32が連結される。 For example, the hooks 31 for the trunk rim 31 are in an inverted U shape and are attached to the upper rim 111 of the trespass prevention fence 1 in the lane direction (X One pair is installed in the axial direction). Hanging ladders 3 are hung from the lower ends of both sides (in the Y-axis direction) of the inverted U-shape to the main road side 15 and side road side 16. The upper rim 111 of the trespass prevention fence 1 is available in two types, depending on regional characteristics: an angle steel type (L40 x 40 mm) and a steel pipe type (φ76.8 mm) (see FIGS. 6 and 7). Therefore, the furring hook 31 stably straddles and hangs over the upper furring 111 of both types, forming an inverted U-shape. The body hook 31 can stably support an angle iron type and a steel pipe type at the inner upper part. The inverted U-shape is formed from an aluminum plate. Each steel cable hole 31a (φ8 mm) is provided at the lower end of both sides of the inverted U-shape, and a steel cable 32 is connected to the steel cable hole 31a via a fastener 31b (carabiner as an example).

鋼索32は、一例としてSUSステンレスワイヤロープφ3mm(W7-3)を使用している。そして、一例として4段の井桁踏板33を、井桁踏板33を構成する一対の縦桁332・332の両端部(井桁踏板33の四隅)を、座金332bと留金具332cにより各支持して、吊り梯子3を構成している。井桁踏板33の四隅を吊ることで、安定して支持することができる。図3を参照のこと。 As the steel cable 32, for example, a SUS stainless steel wire rope with a diameter of 3 mm (W7-3) is used. As an example, a four-tiered double digit tread 33 is suspended by supporting both ends (the four corners of the double digit tread 33) of the pair of longitudinal girders 332, 332 constituting the double digit tread 33 with washers 332b and fasteners 332c. It constitutes Ladder 3. By suspending the four corners of the cross-legged footboard 33, stable support can be achieved. See Figure 3.

一対の胴縁用鉤31・31の逆U字形状の片側下端の鋼索用孔31a・31aより、1対の鋼索32・32で吊られた吊り梯子3は、一例として井桁踏板33を4段有している。井桁踏板33・33・33・33の間隔は、一例として胴縁用鉤31・31の直下はL1=250mm、他の3段はL2、3、4=300mmである。そして、最下段の井桁踏板33の地面からの設置高さは、H=194mmとなる。したがって、吊り梯子3により、高さH=1500mmの立入り防止柵を、容易に昇り降りすることができる。 The hanging ladder 3 is suspended by a pair of steel cables 32, 32 from the steel cable holes 31a, 31a at the lower end of one side of the inverted U-shape of the pair of body hooks 31, 31. have. As an example, the spacing between the parallel pedestal treads 33, 33, 33, and 33 is L1 = 250 mm directly below the body hooks 31, 31, and L2, 3, and 4 = 300 mm for the other three stages. The installation height of the lowest parallel cross step board 33 from the ground is H=194 mm. Therefore, by using the hanging ladder 3, it is possible to easily go up and down the trespassing fence having a height H=1500 mm.

図3は、本発明の実施例3に係る井桁踏板33の詳細図で、(a)は平面図、(b)は正面図、(c)は側面図である。井桁踏板33は、一例としてアルミニュ-ム製の角管20×20×2mmにより、横桁331(20×20×300mm)と縦桁332(20×20×200mm)を井桁状に組み立てたものである。横桁331は車線方向(X軸方向)に縦桁332の中心位置に対して離間距離100mmで2本配置されている。縦桁332は車線直角方向(Y軸方向)に外側間隔300mmで2本配置されている。縦桁332の上に横桁331が直して配設され、一例として横型331と縦桁332の交差部が溶着されている。縦桁332の両端部には鋼索用孔332a(φ4mm)を有し、一対の縦桁332で四隅の鋼索用孔332aが形成されている。踏板を井桁踏板33とすることで、安定して人の足を支持することが可能で、かつ軽量(400g/井桁踏板)な構造となっている。 3A and 3B are detailed views of the cross-shaped step board 33 according to the third embodiment of the present invention, in which (a) is a plan view, (b) is a front view, and (c) is a side view. As an example, the double crossbeam tread 33 is made by assembling a horizontal crossbeam 331 (20x20x300mm) and a vertical crossbeam 332 (20x20x200mm) into a crossbeam shape using aluminum square tubes measuring 20x20x2mm. be. Two cross beams 331 are arranged at a distance of 100 mm from the center position of the vertical beam 332 in the lane direction (X-axis direction). Two longitudinal beams 332 are arranged at an outer interval of 300 mm in the direction perpendicular to the traffic lane (Y-axis direction). A cross beam 331 is disposed perpendicularly on the vertical beam 332, and as an example, the intersection of the horizontal beam 331 and the vertical beam 332 is welded. The longitudinal beams 332 have steel cable holes 332a (φ4 mm) at both ends, and the steel cable holes 332a are formed at the four corners of the pair of longitudinal beams 332. By using the double tread tread 33 as the tread, it is possible to stably support a person's feet, and the structure is lightweight (400 g/double tread).

吊り梯子3は、立入り防止柵1の上側胴縁111に胴縁用鉤31を配設することで、本線側15及び側道側16の両側に、容易に設置することができる。また、吊り梯子3を鋼索32と井桁踏板33とから構成することで、軽量で、かつ折り畳めて結束することで持ち運びが容易で、さらに結束を解除することで展開が容易な構造となっている。 The hanging ladder 3 can be easily installed on both sides of the main road side 15 and side road side 16 by arranging the hooks 31 for the upper girth 111 of the trespass prevention fence 1. In addition, by constructing the hanging ladder 3 from the steel cables 32 and the cross treads 33, it is lightweight and can be easily carried by folding and bundling, and furthermore, it has a structure that can be easily unfolded by releasing the bundling. .

<手摺>
図4は、本発明の実施例4に係る手摺4を示す図で、(a)は斜視図、(b)は側面図である。手摺4は、一対の乗越え手摺41と、一対の乗越え手摺41に連結された支柱部42とから構成されている。乗越え手摺41の下部には、立入り防止柵1の上側胴縁111の部材に対応して固定できる、胴縁掛金具411を有している。乗越え手摺41は、一例として断面30×40×2mm、長さ1200mmの角形のアルミニュウム形材で形成されている。そして、立入り防止柵1の上側胴縁111に固定された胴縁掛金具411から、上方に延伸した乗越え手摺41となる。このため、乗越え手摺41を使用することにより、安全に立入り防止柵1を乗越えることができる。
<Handrail>
FIG. 4 is a diagram showing a handrail 4 according to a fourth embodiment of the present invention, in which (a) is a perspective view and (b) is a side view. The handrail 4 is comprised of a pair of handrails 41 and a support 42 connected to the pair of handrails 41. The lower part of the handrail 41 has a furring hook 411 that can be fixed to a member of the upper armature 111 of the trespassing prevention fence 1. For example, the handrail 41 is made of a rectangular aluminum section with a cross section of 30 x 40 x 2 mm and a length of 1200 mm. A handrail 41 extends upward from a rim hook 411 fixed to the upper rim 111 of the trespass prevention fence 1. Therefore, by using the climbing handrail 41, the entry prevention fence 1 can be safely climbed over.

胴縁掛金具411は、一例として乗越え手摺41から一方側(Y軸プラス側)に突設した板状部材である鋼管タイプ用掛金具411aと、他方側(Y軸マイナス側)に突設した板状部材である山形鋼タイプ用掛金具411bと、から構成されている。鋼管タイプ用掛金具411aは、鋼管タイプの上側胴縁111に使用し、山形鋼タイプ用掛金具411bは、山形鋼タイプの上側胴縁111に使用するものである。そして、鋼管タイプ用掛金具411aの下側には鋼管(φ76.8mm)の上半分に対応した半円形(R=38mm)の切欠きが形成されている。さらに、山形鋼タイプ用掛金具411bの下側には山形鋼(L=40×40mm)の上半分に対応した矩形(45×20mm)の切欠きが形成されている。 For example, the torso hook 411 includes a steel pipe type hook 411a, which is a plate-shaped member that protrudes from the handrail 41 on one side (Y-axis positive side), and a steel pipe type hook 411a that protrudes from the other side (Y-axis minus side). It consists of an angle iron type latch fitting 411b which is a plate-like member. The steel pipe type latch 411a is used for the upper furrow 111 of the steel pipe type, and the angle iron type latch 411b is used for the upper furrow 111 of the angle iron type. A semicircular notch (R=38 mm) corresponding to the upper half of the steel pipe (φ76.8 mm) is formed on the lower side of the steel pipe type latch 411a. Furthermore, a rectangular (45 x 20 mm) notch corresponding to the upper half of the angle iron type (L=40 x 40 mm) is formed on the lower side of the angle iron type hook 411b.

乗越え手摺41の下部と、支柱部42の上部とは、一例としての入子構造である連結部43で連結される。その際、乗越え手摺41下方の胴縁掛金具411は、上側胴縁111に対応したものとなるよう方向を選択され、一例として3箇所の連結孔とボルトナット等の連結治具431により、高さ調整されて固定される。そして、立入り防止柵1に、乗越え手摺41の支柱部42の下端が、連結固定される。図4(a)(b)を参照のこと。 The lower part of the handrail 41 and the upper part of the support column 42 are connected by a connecting part 43, which is an example of a nested structure. At this time, the direction of the rim hook 411 below the handrail 41 is selected so as to correspond to the upper rim 111, and for example, three connecting holes and a connecting jig 431 such as bolts and nuts are used to increase the height. adjusted and fixed. Then, the lower end of the support column 42 of the handrail 41 is connected and fixed to the entry prevention fence 1. See FIGS. 4(a) and 4(b).

図5は、本発明の実施例5に係る手摺4の支柱部42を示す図で、(a)は正面図、(b)は平面図、(c)は側面図、(d)は固定治具の詳細図である。支柱部42は、一対の鉛直材420・420と、鉛直材420と直して連結された上水平材421と下水平材422を備えている。鉛直材420は、一例として断面30×40×2mm、長さ1250mmの角形のアルミニュウム形材で形成されている。上水平材421は、支柱部42の略中央付近に配設され、下水平材422は支柱部42の下端部に配設されている。そして、下水平材422は、立入り防止柵1の下側胴縁112と連結して支柱部42を連結固定する固定治具を有している。固定治具は、一例として下側胴縁固定鎖422a(SUSチェーン、2.5-A)と鎖用鉤422bとから構成されている。下側胴縁固定鎖422aの一端は、ボルトにより下水平材422の中央付近の上面に固定されている。下水平材422の中央付近の側面には、鉤開口を上側として鎖用鉤422bが固定されている。 5A and 5B are diagrams showing the support column 42 of the handrail 4 according to the fifth embodiment of the present invention, in which (a) is a front view, (b) is a plan view, (c) is a side view, and (d) is a fixed fixture. It is a detailed view of the tool. The support section 42 includes a pair of vertical members 420, 420, and an upper horizontal member 421 and a lower horizontal member 422 connected orthogonally to the vertical member 420. The vertical member 420 is formed of a rectangular aluminum shape having a cross section of 30×40×2 mm and a length of 1250 mm, for example. The upper horizontal member 421 is disposed near the approximate center of the column 42, and the lower horizontal member 422 is disposed at the lower end of the column 42. The lower horizontal member 422 has a fixing jig that connects to the lower side edge 112 of the trespass prevention fence 1 and connects and fixes the support portion 42. The fixing jig includes, for example, a lower furrow fixing chain 422a (SUS chain, 2.5-A) and a chain hook 422b. One end of the lower furrow fixing chain 422a is fixed to the upper surface near the center of the lower horizontal member 422 with a bolt. A chain hook 422b is fixed to the side surface near the center of the lower horizontal member 422 with the hook opening facing upward.

支柱部42の下水平材422を、立入り防止柵1の下側胴縁112と連結固定する際、下側胴縁固定鎖422aの他端を下側胴縁112の上側から下側に通して、鎖用鉤422bに掛けるだけで、容易に支柱部42を連結固定することができる。 When connecting and fixing the lower horizontal member 422 of the column 42 to the lower rim 112 of the trespass prevention fence 1, the other end of the lower rim fixing chain 422a is passed from the upper side of the lower rim 112 to the lower side. The support column 42 can be easily connected and fixed by simply hanging it on the chain hook 422b.

<乗越え梯子の設置方法>
本発明の実施例6に係る、立入り防止柵1への乗越え梯子2の設置方法は、
(a)胴縁用鉤31を立入り防止柵1の上側胴縁111を跨いで掛ける工程、
(b)胴縁用鉤31の一端に鋼索32を連結し、井桁踏板33を吊り下げ展開する工程、
(c)胴縁用鉤31の他端に鋼索32を連結し、井桁踏板33を結束した状態で保持する工程、
(d)乗越え手摺41の胴縁掛金具411を、立入り防止柵1の上側胴縁111の部材に対応して固定する工程、
(e)立入り防止柵1の下側胴縁112と支柱部42を、固定治具により連結固定する工程、
(f)乗越え手摺41を使用して、井桁踏板33の結束を解除して展開する工程、
を少なくとも備えている。
<How to install a climbing ladder>
The method of installing the climbing ladder 2 on the entry prevention fence 1 according to the sixth embodiment of the present invention is as follows:
(a) Step of attaching the rim hook 31 across the upper rim 111 of the trespass prevention fence 1;
(b) a step of connecting the steel cable 32 to one end of the trunk hook 31 and suspending and deploying the cross tread 33;
(c) a step of connecting the steel cable 32 to the other end of the body hook 31 and holding the cross tread 33 in a tied state;
(d) a step of fixing the rim hook 411 of the climbing handrail 41 in correspondence with the member of the upper rim 111 of the trespass prevention fence 1;
(e) a step of connecting and fixing the lower edge 112 of the trespass prevention fence 1 and the support section 42 using a fixing jig;
(f) a step of untying and unfolding the cross-legged tread 33 using the handrail 41;
At least.

準備工程として、一例として、本線側において2個の吊り梯子3と手摺4を準備する。2個の吊り梯子3は、井桁踏板33を結束した状態で運搬する。また手摺4は乗越え手摺41と支柱部42は分離した状態で運搬する。なお、側道側からの乗越え梯子の設置方法も同様な工程となる。 As a preparation step, as an example, two hanging ladders 3 and a handrail 4 are prepared on the main line side. The two hanging ladders 3 transport the cross-legged treads 33 in a tied state. Moreover, the handrail 4 can be climbed over, and the handrail 41 and the support column 42 are transported in a separated state. The method for installing a climbing ladder from the side road side will be the same process.

(a)胴縁用鉤31を立入り防止柵1の上側胴縁111を跨いで掛ける工程。胴縁用鉤31・31は、本線側より立入り防止柵1の上側胴縁111のX軸方向に、吊り梯子3の鋼索32・32の横幅の間隔(L=180mm)で1対設置される。立入り防止柵1の上側胴縁111は、地域特性により山形鋼タイプ(L40×40mm)と鋼管タイプ(φ76.8mm)との2種類があるが、胴縁用鉤31は両タイプに安定して跨いで設置可能である。実施例6では、立入り防止柵1の上側胴縁111は山形鋼タイプである。 (a) Step of hooking the rim hook 31 across the upper rim 111 of the trespassing fence 1. A pair of trunk hooks 31, 31 are installed from the main line side in the X-axis direction of the upper trunk rim 111 of the trespassing fence 1 at an interval equal to the width of the steel cables 32, 32 of the hanging ladder 3 (L = 180 mm). . The upper rim 111 of the trespass prevention fence 1 is available in two types depending on regional characteristics: an angle steel type (L40 x 40 mm) and a steel pipe type (φ76.8 mm), but the rim hook 31 is stable for both types. Can be installed astride. In the sixth embodiment, the upper rim 111 of the trespass prevention fence 1 is of the angle iron type.

(b)胴縁用鉤31の一端に、鋼索32を連結し、井桁踏板33を吊り下げ展開する工程。一対の胴縁用鉤31・31の逆U字形状の本線側の片側下端の鋼索用孔31a・31aより、留金具31b・31bを介して1対の鋼索32・32が連結される。そして、一例として4段の井桁踏板33を吊り下げ展開して、本線側15の乗越え梯子2の設置を完了する。 (b) A step of connecting the steel cable 32 to one end of the trunk hook 31 and suspending and deploying the cross tread 33. A pair of steel cables 32, 32 are connected through steel cable holes 31a, 31a at the lower end of one side of the main line side of the pair of body hooks 31, 31 via fasteners 31b, 31b. Then, as an example, the four-stage cross-legged tread 33 is suspended and deployed to complete the installation of the overpass ladder 2 on the main line side 15.

(c)胴縁用鉤31の他端に、鋼索32を連結し、井桁踏板33を結束した状態で保持する工程。本線側15から、側道側16である一対の胴縁用鉤31・31の逆U字形状の側道側16の片側下端の鋼索用孔31a・31aより、留金具31b・31bを介して1対の鋼索32・32が連結される。そして、一例として4段の井桁踏板33を結束した状態で保持し、側道側16の乗越え梯子2の仮設置を完了する。 (c) A step of connecting the steel cable 32 to the other end of the body hook 31 and holding the cross tread 33 in a tied state. From the main line side 15, through the steel cable holes 31a, 31a at the lower end of one side of the inverted U-shaped side road side 16 of the pair of body hooks 31, 31, which are the side road side 16, via the fasteners 31b, 31b. A pair of steel cables 32, 32 are connected. Then, as an example, the four steps of the cross-legged treads 33 are held in a tied state, and the temporary installation of the climbing ladder 2 on the side road side 16 is completed.

乗越え手摺41と支柱部42とを、連結部43により連結治具431を使用して仮連結する。そして手摺4を組み立て、本線側15に設置した吊り梯子3の両側に設置する。 The handrail 41 and the support column 42 are temporarily connected by the connecting part 43 using a connecting jig 431. Handrails 4 are then assembled and installed on both sides of the hanging ladder 3 installed on the main line side 15.

(d)乗越え手摺41の胴縁掛金具を、立入り防止柵の上側胴縁の部材に対応して固定する工程。吊り梯子3の両側に設置された、一方の乗越え手摺41の胴縁掛金具411を、立入り防止柵1の上側胴縁111の部材(山形鋼タイプ)に対応して、山形鋼タイプ用掛金具411bを選択し、かつ乗越え手摺41と支柱42との連結部43の連結治具431を使用して、高さを調整して設置固定する。他方の乗越え手摺41の胴縁掛金具411も同様である。 (d) A step of fixing the rim hook of the handrail 41 in correspondence with the member of the upper rim of the trespassing fence. The edge hooks 411 of one of the handrails 41 installed on both sides of the hanging ladder 3 are attached to angle iron type hooks corresponding to the members (angle iron type) of the upper edge 111 of the trespass prevention fence 1. 411b, and using the connecting jig 431 of the connecting part 43 between the handrail 41 and the column 42, adjust the height and install and fix it. The same applies to the furrow hook 411 of the other handrail 41.

(e)立ち入り防止柵1の下側胴縁112と支柱部42を固定治具により連結固定する工程。下側胴縁固定鎖422aの自由端を、下側胴縁112の上側から下側に通して、鎖用鉤422bに掛けて連結固定する。 (e) A step of connecting and fixing the lower edge 112 of the entry prevention fence 1 and the support section 42 using a fixing jig. The free end of the lower furring fixing chain 422a is passed from the upper side to the lower side of the lower furring 112 and hooked onto the chain hook 422b to be connected and fixed.

(f)乗越え手摺を使用して、井桁踏板の結束を解除して展開する工程。乗越え手摺41を使用して、本線側15から吊り梯子3を昇り、側道側16の井桁踏板33の結束を解除して展開する。 (f) The process of untying and unfolding the cross-legged treads using the overpass handrail. Using the handrail 41, climb up the hanging ladder 3 from the main road side 15, release the binding of the parallel cross tread 33 on the side road side 16, and unfold it.

乗越え梯子2は、本線側15の胴縁用鉤31の一端に、井桁踏板33を吊り下げ展開し、側道側16の胴縁用鉤31の他端に、井桁踏板33を結束した状態で保持される。そして、本線側15から設置した乗越え手摺41を使用して、井桁踏板33の結束を解除して展開する工程により、安全・容易に乗越え梯子を設置できる。 The climbing ladder 2 is constructed by hanging and deploying the cross-legged treads 33 from one end of the hooks 31 on the main road side 15, and tying the cross-legged treads 33 to the other end of the hooks 31 on the side road side 16. Retained. Then, by using the climbing handrail 41 installed from the main line side 15 and untying and deploying the parallel ladder treads 33, the climbing ladder can be installed safely and easily.

図6及び図7は、立入り防止柵1の組立て図である。立入り防止柵1は、上側・下側に車線方向(X軸方向)に配設された胴縁(地上から上側胴縁上端までL=1500mm)を、所定間隔(L=1500~2000mm)に設けた柱で支持し、ひし形金網及び骨線を張った構成である。上側胴縁は、降雪地域では雪荷重を考慮して、図6の鋼管タイプ(φ76.8mm)が採用され、それ以外の地域では、図7の山形鋼タイプ(L40×40mm)が採用されている。 6 and 7 are assembly diagrams of the entry prevention fence 1. The trespass prevention fence 1 has a rim (L = 1500 mm from the ground to the top end of the upper rim) arranged in the lane direction (X-axis direction) on the upper and lower sides at predetermined intervals (L = 1500 to 2000 mm). It is supported by pillars with diamond-shaped wire mesh and bone wire. For the upper body rim, the steel pipe type (φ76.8 mm) shown in Figure 6 is used in snowy areas, taking the snow load into account, and the angle iron type (L40 x 40 mm) shown in Figure 7 is used in other areas. There is.

<他の実施例>
立入り防止柵1には、上側胴縁111より上方に、有刺鉄線部を備えたものがある(図示省略)。この場合、乗越え梯子2の乗越え手摺41・41に、有刺鉄線部より上方位置に、吊り梯子3を支持する吊り梯子支持具を配設する。吊り梯子支持具は、手摺連結部と支持部とを備えている。手摺連結部は、両側の乗越え手摺41・41間をX軸方向に連結する。手摺連結部の両端部には、手摺連結部に直交し立入り防止柵1の本線側15と側道側16までY軸方向に伸びた、一対の支持部が配設されている。そして、支持部の本線側15と側道側16に各位置する両端部の下端には、鋼索用孔(φ8mm)を有し、鋼索用孔に留金具(一例としてカラビナ)を介して、鋼索が連結される。そして、実施例2の構造形式に準拠した、吊り梯子3を設置する。有刺鉄線部より上方位置に、吊り梯子支持具を配設することにより、吊り梯子3を立入り防止柵1の本線側15と側道側16に容易に配置することができ、有刺鉄線部のある立入り防止柵1を安全に乗り越えることができる。
<Other Examples>
Some of the entry prevention fences 1 are equipped with a barbed wire section above the upper body rim 111 (not shown). In this case, a hanging ladder support for supporting the hanging ladder 3 is provided on the climbing handrails 41 of the climbing ladder 2 at a position above the barbed wire portion. The hanging ladder support includes a handrail connection part and a support part. The handrail connecting portion connects the handrails 41 on both sides in the X-axis direction. A pair of support parts are disposed at both ends of the handrail connecting part, and are perpendicular to the handrail connecting part and extending in the Y-axis direction to the main road side 15 and side road side 16 of the trespassing fence 1. The lower ends of both ends located on the main line side 15 and the side road side 16 of the support part have steel cable holes (φ8 mm), and the steel cables can be connected to the steel cable holes through fasteners (carabiners as an example). are concatenated. Then, a hanging ladder 3 conforming to the structure of the second embodiment is installed. By arranging the hanging ladder support at a position above the barbed wire section, the hanging ladder 3 can be easily placed on the main line side 15 and side road side 16 of the trespassing fence 1, and the barbed wire section Entry prevention fence 1 can be safely climbed over.

1 立入り防止柵
11 胴縁
11a 鋼管
11b 山形鋼
111 上側胴縁
112 下側胴縁
12 支柱
13 金網
15 本線側
16 側道側
2 乗越え梯子
3 吊り梯子
31 胴縁用鉤
31a 鋼索用孔
31b 留金具(クランプ)
32 鋼索(ワイヤーロープ)
32a 胴縁用鉤留金具
33 井桁踏板
331 横桁
332 縦桁
332a 鋼索用孔
332b 座金
332c 留金具
4 手摺
41 乗越え手摺
411 胴縁掛金具
411a 鋼管タイプ用掛金具
411b 山形鋼タイプ用掛金具
42 支柱部
420 鉛直材
421 上水平材
422 下水平材
422a 下側胴縁固定鎖(固定治具)
422b 鎖用鉤(固定治具)
43 連結部
431 連結治具
1 Entry prevention fence 11 Rim 11a Steel pipe 11b Angle steel 111 Upper arm rim 112 Lower arm rim 12 Post 13 Wire mesh 15 Main line side 16 Side road side 2 Overpass ladder 3 Hanging ladder 31 Hook for arm rim 31a Steel cable hole 31b Fastener (clamp)
32 Steel rope (wire rope)
32a Furnace hook clasp 33 Cross tread 331 Cross beam 332 Vertical beam 332a Steel cable hole 332b Washer 332c Fastener 4 Handrail 41 Overpass handrail 411 Rim hook 411a Steel pipe type latch 411b Angle steel type latch 42 Support Part 420 Vertical member 421 Upper horizontal member 422 Lower horizontal member 422a Lower furring fixing chain (fixing jig)
422b Chain hook (fixing jig)
43 Connecting part 431 Connecting jig

Claims (5)

立入り防止柵を乗り越えるための乗越え梯子であって、
前記乗越え梯子は、吊り梯子と手摺とを備え、
前記吊り梯子は、胴縁用鉤と、鋼索と、井桁踏板とから構成し、
前記胴縁用鉤は、逆U字形状で前記立入り防止柵の上側胴縁を跨いで掛けられ、
前記逆U字形状の両側下端に連結された前記鋼索により、前記井桁踏板は吊り下げられ、
前記手摺は、乗越え手摺と、前記乗越え手摺に連結された支柱部を備え、
前記乗越え手摺は、前記上側胴縁の部材に対応した胴縁掛金具を有し、
前記支柱部の下端には、前記立入り防止柵の下側胴縁と連結固定する固定治具を有することを特徴とする乗越え梯子。
A climbing ladder for climbing over a trespassing fence,
The climbing ladder includes a hanging ladder and a handrail,
The hanging ladder is composed of a trunk hook, a steel cable, and a cross tread,
The rim hook has an inverted U-shape and is hung across the upper rim of the trespassing fence;
The steel cables connected to the lower ends of both sides of the inverted U-shape suspend the well-girder tread,
The handrail includes a cross-over handrail and a support column connected to the cross-over handrail,
The handrail has a furring hook that corresponds to the member of the upper furrow,
A climbing ladder characterized in that the lower end of the support section has a fixing jig for connecting and fixing the lower edge of the entry prevention fence.
前記井桁踏板は、一対の棒状の縦桁と、前記縦桁と直して連結された一対の棒状の横桁とから構成し、
前記縦桁の両端部には、前記鋼索と連結するための鋼索用孔を有することを特徴とする請求項1に記載の乗越え梯子。
The parallel girder tread is composed of a pair of rod-shaped vertical beams and a pair of rod-shaped cross beams connected orthogonally to the vertical beams,
2. The climbing ladder according to claim 1, wherein both ends of the longitudinal beam have steel cable holes for connecting with the steel cables.
前記支柱部は、一対の鉛直材と、前記鉛直材と直して連結された上水平材と下水平材とから構成し、
前記下水平材は、前記固定治具を有し、前記固定治具は、下側胴縁固定鎖と、鎖用鉤とから構成されたことを特徴とする請求項1に記載の乗越え梯子。
The support section is composed of a pair of vertical members, and an upper horizontal member and a lower horizontal member connected orthogonally to the vertical members,
2. The climbing ladder according to claim 1, wherein the lower horizontal member has the fixing jig, and the fixing jig is composed of a lower furrow fixing chain and a chain hook.
前記胴縁掛金具は、鋼管タイプ用掛金具と、山形鋼タイプ用掛金具とから構成されたことを特徴とする請求項1に記載の乗越え梯子。 2. The climbing ladder according to claim 1, wherein the furring hook is comprised of a steel pipe type hook and an angle iron type hook. 請求項1に記載の乗越え梯子の設置方法であって、
前記胴縁用鉤を前記立入り防止柵の前記上側胴縁を跨いで掛ける工程と、
前記胴縁用鉤の一端に前記鋼索を連結し、前記井桁踏板を吊り下げ展開する工程と、
前記胴縁用鉤の他端に前記鋼索を連結し、前記井桁踏板を結束した状態で保持する工程と、
前記乗越え手摺の前記胴縁掛金具を、前記立入り防止柵の前記上側胴縁の部材に対応して固定する工程と、
前記立入り防止柵の前記下側胴縁と前記支柱部を、前記固定治具により連結固定する工程と、
前記乗越え手摺を使用して、前記井桁踏板の結束を解除して展開する工程と、を少なくとも備えたことを特徴とする乗越え梯子の設置方法。
A method for installing a climbing ladder according to claim 1, comprising:
hanging the rim hook across the upper rim of the trespassing fence;
a step of connecting the steel cable to one end of the body hook and suspending and deploying the parallel treadle;
Connecting the steel cable to the other end of the body hook and holding the parallel tread in a tied state;
fixing the rim hook of the handrail in a corresponding manner to a member of the upper rim of the trespassing fence;
Connecting and fixing the lower edge of the trespass prevention fence and the support portion using the fixing jig;
A method for installing a climbing ladder, comprising at least the step of using the climbing handrail to unbind and deploy the parallel ladder treads.
JP2023193167A 2023-11-13 2023-11-13 Ladders and installation methods for climbing over trespassing fences Active JP7421784B1 (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100163340A1 (en) 2008-12-30 2010-07-01 Allred & Associates Inc. Ultra lightweight segmented ladder/bridge system
JP2012255275A (en) 2011-06-08 2012-12-27 Ksk Co Ltd Suspended ladder
JP2023089377A (en) 2021-12-16 2023-06-28 ケイコン株式会社 Portable getting-over stair structure for median strip protection fence, and assembly method

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100163340A1 (en) 2008-12-30 2010-07-01 Allred & Associates Inc. Ultra lightweight segmented ladder/bridge system
JP2012255275A (en) 2011-06-08 2012-12-27 Ksk Co Ltd Suspended ladder
JP2023089377A (en) 2021-12-16 2023-06-28 ケイコン株式会社 Portable getting-over stair structure for median strip protection fence, and assembly method

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