JP2017210814A - Going-in-and-out auxiliary device of manhole - Google Patents

Going-in-and-out auxiliary device of manhole Download PDF

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JP2017210814A
JP2017210814A JP2016105230A JP2016105230A JP2017210814A JP 2017210814 A JP2017210814 A JP 2017210814A JP 2016105230 A JP2016105230 A JP 2016105230A JP 2016105230 A JP2016105230 A JP 2016105230A JP 2017210814 A JP2017210814 A JP 2017210814A
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manhole
opening
gripping rod
cover member
ladder
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JP6732538B2 (en
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祥治 浜口
Yoshiharu Hamaguchi
祥治 浜口
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Maeda Corp
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Maeda Corp
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Abstract

PROBLEM TO BE SOLVED: To take out and fix a grip bar from the inside of a manhole, without taking an unreasonable posture when an operator goes in and out of the inside of the manhole.SOLUTION: A going-in-and-out auxiliary device comprises a plurality of stages of ladders 20 installed in a manhole 200, a grip bar 10 of becoming a secure hand of an operator for going in and out of the manhole by being installed above the ladders, a storage part 30 installed in the vicinity of the upper part of the ladders and storing the grip bar, an extrusion member 40 installed in a bottom part of the storage part and extruding the grip bar upward, a fixing part 50 installed in the vicinity of the storage part and fixing the grip bar in a state of projecting from the manhole, and a mooring member 60 for mooring the grip bar in the manhole. The grip bar 10 is stored in the storage part 30 against push-out force of the extrusion member 40 in a state of installing a cover member 70 in an opening part of the manhole, and projects from the inside of the storage part 30 by the push-out force of the extrusion member 40 in a state of removing the cover member 70 from the opening part of the manhole.SELECTED DRAWING: Figure 4

Description

本発明はマンホールの出入補助装置に関し、詳しくは、マンホールの出入に使用する掴み棒等からなる出入補助装置に関するものである。   The present invention relates to a manhole entry / exit assistance device, and more particularly to an entry / exit assistance device comprising a gripping rod or the like used for manhole entry / exit.

マンホールの地上部付近には、作業者が出入時に使用するはしごや掴み棒等の出入補助装置が設置されている。このようなマンホールの出入補助装置について、種々の提案がなされている（特許文献１参照）。特許文献１に記載された技術は、作業者が無理のない姿勢でマンホールに出入りできるようにするとともに、第三者に対してマンホールが開放されていることを告知する機能を有している。   Near the ground of the manhole, an entry / exit assisting device such as a ladder and a grip bar used by an operator when entering and exiting is installed. Various proposals have been made for such a manhole entrance / exit assistance device (see Patent Document 1). The technique described in Patent Document 1 has a function of allowing an operator to enter and exit the manhole with a reasonable posture and notifying a third party that the manhole is open.

具体的には、マンホールの周壁に設置された上部の梯子本体の両側にそれぞれ縦方向に固定される一対の支持パイプと、これら支持パイプに縦杆部がそれぞれ摺動自在かつ回動自在に挿入されるとともに、縦杆部の上部を略Ｕ字状に折り返して手摺り枠が形成された一対の手摺杆と、この手摺杆の延出端部の間に着脱自在に掛け渡されて、延出端部同士を固定する固定部材とを備えている。そして、延出端部をマンホール上に上昇、回転させて、マンホールの周縁部に接地することにより、手摺杆をマンホール外に設置することができるようになっている。   Specifically, a pair of support pipes fixed in the vertical direction on both sides of the upper ladder body installed on the peripheral wall of the manhole, and the vertical hooks are slidably and rotatably inserted into these support pipes, respectively. At the same time, the upper part of the vertical hook part is folded back in a substantially U shape and is detachably spanned between a pair of handrail fences formed with a handrail frame and the extended end part of the handrail fence. And a fixing member that fixes the protruding ends. Then, the handrail rod can be installed outside the manhole by raising and rotating the extended end portion on the manhole and grounding the peripheral end of the manhole.

特開２０００−２７３８８６号公報JP 2000-273886 A

上述したように、マンホールの地上部付近には、作業者がマンホール内に出入するための梯子が設けられている。この梯子は、マンホールの縦穴の周壁から突出した複数段の足掛け部からなり、作業者はこの梯子を用いてマンホール内を昇降する。特許文献１に記載された技術は、梯子の補助装置として、マンホールから地上に突出する手摺杆（掴み棒）を備えており、作業者が手摺杆（掴み棒）を握って梯子に足をかけることにより、マンホールへの出入時に作業者が不安定な姿勢になることを防止している。   As described above, a ladder for an operator to enter and exit the manhole is provided near the ground portion of the manhole. The ladder is composed of a plurality of steps of leg portions protruding from the peripheral wall of the vertical hole of the manhole, and an operator moves up and down in the manhole using the ladder. The technique described in Patent Document 1 includes a handrail rod (grip bar) that protrudes from the manhole to the ground as an auxiliary device for the ladder, and an operator puts a foot on the ladder by grasping the handrail rod (grip rod). This prevents the worker from being in an unstable posture when entering and exiting the manhole.

しかし、特許文献１に記載された技術では、マンホールの蓋を開けた後に、手摺杆（掴み棒）を引き出して固定しなければならず、この一連の操作では作業者が腰をかがめて、マンホール内に手を差し込む等の動作が必要となる。このため、手摺杆（掴み棒）を固定するまでの動作において、作業者に無理な姿勢を強いることになる。   However, in the technique described in Patent Document 1, after opening the manhole cover, a handrail rod (gripping rod) must be pulled out and fixed. An operation such as inserting a hand into the inside is required. For this reason, the operator is forced to take an unreasonable posture in the operation until the handrail rod (grip bar) is fixed.

本発明は上述した事情に鑑み提案されたもので、作業者がマンホール内に出入する際に、無理な姿勢をとることなく、マンホール内から掴み棒を取り出して固定することができるマンホールの出入補助装置を提供することを目的とする。   The present invention has been proposed in view of the above-described circumstances. When a worker enters and exits the manhole, the manhole entry and exit assistance can be taken out and fixed from the manhole without taking an unreasonable posture. An object is to provide an apparatus.

本発明に係るマンホールの出入補助装置は、上述した事情に鑑み提案されたもので、以下の特徴点を有している。すなわち、本発明に係るマンホールの出入補助装置は、マンホール内に設置した複数段の梯子と、梯子の上方に設置することにより、マンホールに出入する作業者の手掛けとなる掴み棒と、梯子の上部付近に設置され、掴み棒を収容する収納部と、収納部の底部に設置され、掴み棒を上方へ向かって押し出す押出部材と、収納部の近傍に設置され、掴み棒をマンホールから突出した状態で固定する固定部と、掴み棒をマンホール内に繋ぎ止める繋留部材とを備えている。   The manhole access assist device according to the present invention has been proposed in view of the above-described circumstances, and has the following features. That is, the manhole access assist device according to the present invention includes a plurality of ladders installed in the manhole, a grip bar serving as a hand for an operator entering and exiting the manhole by being installed above the ladder, and an upper part of the ladder A storage unit that is installed in the vicinity and that houses the gripping bar, a push-out member that is installed at the bottom of the storage unit and pushes the gripping bar upward, and is installed in the vicinity of the storage unit, with the gripping bar protruding from the manhole And a securing member that secures the gripping rod in the manhole.

そして、掴み棒は、マンホールの開口部に蓋部材を取り付けた状態で、押出部材の押出力に抗して収納部内に収納され、マンホールの開口部から蓋部材を取り外した状態で、押出部材の押出力により収納部内から突出することを特徴とするものである。   The gripping rod is housed in the housing portion against the pushing force of the pushing member with the lid member attached to the opening portion of the manhole, and is removed from the opening portion of the manhole. It protrudes from the inside of the storage portion by the pushing force.

本発明に係るマンホールの出入補助装置によれば、マンホールの開口部に取り付けた蓋部材を取り除いてマンホールを開放状態とすると、収納部内に収納してある掴み棒が押出部材の押出力によりマンホールから突出した状態となる。したがって、作業者は無理な姿勢をとることなく掴み棒を手にすることができるので、掴み棒を固定する操作が容易となり、作業者の負担を軽減することができる。   According to the manhole entrance / exit assistance device according to the present invention, when the manhole is opened by removing the lid member attached to the opening of the manhole, the gripping rod housed in the housing portion is removed from the manhole by the pushing force of the pushing member. Protruding state. Therefore, since the operator can hold the gripping rod without taking an unreasonable posture, the operation of fixing the gripping rod becomes easy, and the burden on the worker can be reduced.

本発明の実施形態に係る出入補助装置を設けたマンホールを側面から見た状態の説明図。Explanatory drawing of the state which looked at the manhole which provided the entrance / exit assistance apparatus which concerns on embodiment of this invention from the side surface. 本発明の実施形態に係る出入補助装置を設けたマンホールを正面から見た状態の説明図。Explanatory drawing of the state which looked at the manhole which provided the entrance / exit assistance apparatus which concerns on embodiment of this invention from the front. 本発明の実施形態に係る掴み棒、収納部、固定部の斜視図。FIG. 3 is a perspective view of a gripping rod, a storage unit, and a fixing unit according to an embodiment of the present invention. 本発明の実施形態に係る掴み棒の着脱を示す説明図。Explanatory drawing which shows attachment or detachment of the grip stick which concerns on embodiment of this invention. マンホール開口部のカバー部材の概略斜視図。The schematic perspective view of the cover member of a manhole opening part. マンホール開口部のカバー部材の平面図。The top view of the cover member of a manhole opening part. マンホール開口部のカバー部材の使用状態の説明図。Explanatory drawing of the use condition of the cover member of a manhole opening part.

以下、図面を参照して、本発明の実施形態に係るマンホールの出入補助装置について説明する。図１〜図４は本発明の実施形態に係るマンホールの出入補助装置を説明するもので、図１は出入補助装置を設けたマンホールを側面から見た状態の説明図、図２は出入補助装置を設けたマンホールを正面から見た状態の説明図、図３は掴み棒、収納部、固定部の斜視図、図４は掴み棒の着脱を示す説明図である。また、図５はマンホール開口部に取り付けるカバー部材の概略斜視図、図６はカバー部材の平面図、図７はカバー部材の使用状態の説明図である。   Hereinafter, a manhole entrance / exit assisting device according to an embodiment of the present invention will be described with reference to the drawings. 1 to 4 illustrate a manhole entry / exit assisting device according to an embodiment of the present invention. FIG. 1 is an explanatory view of a manhole provided with an entry / exit assisting device as viewed from the side, and FIG. FIG. 3 is a perspective view of a gripping rod, a storage portion, and a fixing portion, and FIG. 4 is an explanatory view showing attachment and detachment of the gripping rod. FIG. 5 is a schematic perspective view of the cover member attached to the manhole opening, FIG. 6 is a plan view of the cover member, and FIG. 7 is an explanatory view of the cover member in use.

＜マンホールの出入補助装置の概要＞
本発明の実施形態に係るマンホールの出入補助装置は、図１〜図４に示すように、作業者がマンホール２００内に出入する際に手掛けとして使用する掴み棒に特徴があり、掴み棒１０と、梯子２０の上部付近に設置され、掴み棒１０を収容する収納部３０と、収納部３０の底部に設置され、掴み棒１０を上方へ向かって押し出す押出部材４０と、収納部３０の近傍に設置され、掴み棒１０をマンホール２００から突出した状態で固定する固定部５０と、掴み棒１０をマンホール２００内に繋ぎ止める繋留部材６０とを備えている。 <Outline of manhole access assist device>
As shown in FIGS. 1 to 4, the manhole entry / exit assisting device according to the embodiment of the present invention is characterized by a gripping rod used as a handle when the operator enters and exits the manhole 200. , Installed near the top of the ladder 20, a storage unit 30 for storing the gripping rod 10, installed at the bottom of the storage unit 30, and an extrusion member 40 for pushing the gripping bar 10 upward, and in the vicinity of the storage unit 30. The fixing part 50 is installed and fixed in a state where the gripping rod 10 protrudes from the manhole 200, and the anchoring member 60 that secures the gripping rod 10 in the manhole 200.

＜掴み棒＞
掴み棒１０は、図１〜図４に示すように、マンホール２００内に設置した複数段の梯子２０の上方に設置することにより、マンホール２００に出入する作業者の手掛けとなる部材であり、マンホール２００の開口部に蓋部材７０を取り付けた状態では、梯子２０の上部付近に設置された収納部３０内に収納されている。そして、マンホール２００の開口部から蓋部材７０を取り外した状態で、収納部３０に設けた押出部材４０の押出力により収納部３０内から突出して、作業者が手に取ることができる。 <Grip stick>
As shown in FIGS. 1 to 4, the gripping rod 10 is a member serving as a handle for an operator entering and exiting the manhole 200 by being installed above a plurality of ladders 20 installed in the manhole 200. In a state in which the lid member 70 is attached to the opening of 200, the cover member 70 is stored in the storage unit 30 installed near the upper portion of the ladder 20. And in the state which removed the cover member 70 from the opening part of the manhole 200, it protrudes from the storage part 30 with the pushing force of the extrusion member 40 provided in the storage part 30, and an operator can take in a hand.

この掴み棒１０は、角筒状の棒材からなり、下端部は先細り状となっている。掴み棒１０の長さは、マンホール２００の開口部に蓋部材７０を取り付けた状態で収納部３０内に収納されるとともに、マンホール２００の開口部から蓋部材７０を取り外した状態でマンホール２００から上端部が突出するように設定されている。なお、掴み棒１０の形状は角筒状に限られず、円筒状等であってもよい。   This gripping rod 10 is made of a rectangular tube-shaped bar, and its lower end portion is tapered. The length of the gripping rod 10 is stored in the storage unit 30 with the lid member 70 attached to the opening of the manhole 200, and the upper end from the manhole 200 with the lid member 70 removed from the opening of the manhole 200. The part is set to protrude. The shape of the gripping rod 10 is not limited to a rectangular tube shape, and may be a cylindrical shape.

＜収納部／押出部材＞
収納部３０は、図１〜図４に示すように、掴み棒１０を収納するための部材であり、掴み棒１０の外径よりも若干大きな内径を有する筒状の部材からなり、底部は閉塞されている。また、収納部３０内には、掴み棒１０を上方へ向かって押し出す押出部材４０を設置してある。押出部材４０は、例えば、弦巻バネからなり、その押出力により、掴み棒１０を上方へ向かって押し出すことができる。押出部材４０による掴み棒１０の押出量は、掴み棒１０の上端部がマンホール２００内から若干突出する程度であり、掴み棒１０の長さや重量により、適宜な押出力を設定する。また、押出部材４０は弦巻バネに限られず、掴み棒１０を収納部３０内から押し出すことができる他の部材を用いることができる。 <Storage section / extrusion member>
As shown in FIGS. 1 to 4, the storage portion 30 is a member for storing the gripping rod 10, and is composed of a cylindrical member having an inner diameter slightly larger than the outer diameter of the gripping rod 10, and the bottom portion is closed. Has been. Further, an extrusion member 40 that pushes the gripping bar 10 upward is installed in the storage unit 30. The pushing member 40 is made of, for example, a string spring and can push the gripping rod 10 upward by its pushing force. The pushing amount of the grasping rod 10 by the pushing member 40 is such that the upper end of the grasping rod 10 slightly protrudes from the manhole 200, and an appropriate pushing force is set according to the length and weight of the grasping rod 10. Further, the pushing member 40 is not limited to the string spring, and other members that can push out the gripping rod 10 from the storage unit 30 can be used.

＜固定部＞
固定部５０は、図１〜図４に示すように、収納部３０の近傍に設置され、収納部３０から取り出した掴み棒１０をマンホール２００から突出した状態で固定するための部材である。この固定部５０は、掴み棒１０の外径よりも若干大きな内径を有する筒状の部材からなり、掴み棒１０の下端部を支持する支持部を設けてある。固定部５０の深さは、掴み棒１０がマンホール２００内から適宜長さだけ突出するように設定してある。掴み棒１０の突出長さは、梯子２０を昇降する作業者が手がかりとして使用できるとともに、マンホール２００から突出しても邪魔にならないように設定する。 <Fixed part>
As shown in FIGS. 1 to 4, the fixing unit 50 is a member that is installed in the vicinity of the storage unit 30 and fixes the gripping rod 10 taken out from the storage unit 30 in a state of protruding from the manhole 200. The fixing portion 50 is formed of a cylindrical member having an inner diameter slightly larger than the outer diameter of the gripping rod 10, and is provided with a support portion that supports the lower end portion of the gripping rod 10. The depth of the fixing portion 50 is set so that the gripping rod 10 protrudes from the manhole 200 by an appropriate length. The protruding length of the gripping bar 10 is set so that an operator who moves up and down the ladder 20 can be used as a clue and does not get in the way even when protruding from the manhole 200.

＜繋留部材＞
掴み棒１０と固定部５０との間には、掴み棒１０をマンホール２００内に繋ぎ止めるための繋留部材６０を設けてある。この繋留部材６０は、図１及び図４に示すように、例えば、チェーンからなり、万が一、掴み棒１０を収納部３０と固定部５０との間で移動させる際に、作業者の手から掴み棒１０が離れ、あるいは収納部３０や固定部５０から掴み棒１０が外れたとしても、掴み棒１０がマンホール２００内に落下することを防止するようになっている。掴み棒１０はチェーンに限られず、掴み棒１０をマンホール２００内に繋ぎ止めることができるとともに、掴み棒１０の着脱を阻害しなければ、どのような部材を用いてもよい。 <Tethering member>
Between the gripping rod 10 and the fixed portion 50, a anchoring member 60 for securing the gripping rod 10 in the manhole 200 is provided. As shown in FIGS. 1 and 4, the anchoring member 60 is made of, for example, a chain. When the gripping rod 10 is moved between the storage unit 30 and the fixing unit 50, the anchoring member 60 is gripped from the operator's hand. Even if the bar 10 is separated or the gripping bar 10 is detached from the storage unit 30 or the fixing unit 50, the gripping bar 10 is prevented from falling into the manhole 200. The gripping rod 10 is not limited to a chain, and any member may be used as long as the gripping rod 10 can be locked in the manhole 200 and the attachment / detachment of the gripping rod 10 is not hindered.

＜掴み棒の着脱＞
マンホール２００の開口部に蓋部材７０を取り付けた状態では、図４（ａ）に示すように、掴み棒１０が押出部材４０の押出力に抗して収納部３０内に収納されている。そして、作業者がマンホール２００内で作業を行うために、マンホール２００の開口部から蓋部材７０を取り外すと、図４（ｂ）に示すように、掴み棒１０が押出部材４０の押出力により収納部３０内から突出する。次いで、図４（ｃ）に示すように、作業者は収納部３０から突出した掴み棒１０の上端部を持って収納部３０から引き出し、固定部５０に差し替える。掴み棒１０を固定部５０に固定したら、作業者は掴み棒１０に手を掛けながら梯子２０に足を掛けて、マンホール２００内に入る。 <Removing and attaching the gripping rod>
In a state where the lid member 70 is attached to the opening of the manhole 200, the gripping rod 10 is stored in the storage unit 30 against the pushing force of the pushing member 40 as shown in FIG. Then, when the operator removes the lid member 70 from the opening of the manhole 200 in order to perform the work in the manhole 200, the gripping rod 10 is stored by the pushing force of the pushing member 40 as shown in FIG. Projecting from within the portion 30. Next, as shown in FIG. 4C, the operator holds the upper end portion of the gripping rod 10 protruding from the storage portion 30, pulls it out from the storage portion 30, and replaces it with the fixing portion 50. After the gripping rod 10 is fixed to the fixing portion 50, the operator puts his / her leg on the ladder 20 while putting his hand on the gripping rod 10 and enters the manhole 200.

また、マンホール２００内での作業が終了したら、固定部５０に固定した掴み棒１０を収納部３０へ移動させ、押出部材４０の押出力に抗して掴み棒１０を収納部３０内に収納し、マンホール２００の開口部に蓋部材７０を取り付ける。掴み棒１０を着脱する際に、繋留部材６０により掴み棒１０が固定部５０に繋ぎ止められているため、万が一、作業者の手から掴み棒１０が離れ、あるいは収納部３０や固定部５０から掴み棒１０が外れたとしても、掴み棒１０がマンホール２００内に落下することはない。   When the work in the manhole 200 is completed, the gripping rod 10 fixed to the fixing portion 50 is moved to the storage portion 30 and the gripping rod 10 is stored in the storage portion 30 against the pushing force of the pushing member 40. The lid member 70 is attached to the opening of the manhole 200. When the grip rod 10 is attached or detached, the grip rod 10 is secured to the fixed portion 50 by the anchoring member 60, so that the grip rod 10 is separated from the operator's hand or from the storage portion 30 or the fixed portion 50. Even if the gripping rod 10 is detached, the gripping rod 10 does not fall into the manhole 200.

＜カバー部材＞
マンホール２００内で作業を行うには、蓋部材７０を取り外して開口部を開放する必要がある。この際、開口部が開放状態となっているため、第三者の落下等を防止するために、マンホール２００が開放されていることを告知する必要がある。例えば、開放されたマンホール２００の周囲に柵を設置することにより、第三者がマンホール２００に近づくことを防止するとともに、マンホール２００が開放されていることを告知している。本実施形態のカバー部材１００は、マンホール２００の開口部が開放状態となっている場合に、開口部を閉塞して、第三者がマンホール２００に落下する等の事故を未然に防止するとともに、マンホール２００内への雨水等の浸入を最小限とするための部材である。 <Cover member>
In order to work in the manhole 200, it is necessary to remove the lid member 70 and open the opening. At this time, since the opening is in an open state, it is necessary to notify that the manhole 200 is open in order to prevent a third party from falling. For example, a fence is installed around the opened manhole 200 to prevent a third party from approaching the manhole 200 and to notify that the manhole 200 is opened. The cover member 100 of the present embodiment prevents an accident such as a third party falling into the manhole 200 by blocking the opening when the opening of the manhole 200 is in an open state, It is a member for minimizing the intrusion of rainwater or the like into the manhole 200.

このカバー部材１００を設けた場合には、カバー部材１００をマンホール２００内に収容した状態で、掴み棒１０の上端部が開閉蓋１２０に突き当たり、押出部材４０の押出力に抗して収納部３０内に収納され、カバー部材１００をマンホール２００内から上方へ向かって移動させた状態で、掴み棒１０が押出部材４０の押出力により収納部３０内から突出する。   When the cover member 100 is provided, the upper end portion of the gripping rod 10 abuts against the opening / closing lid 120 in a state where the cover member 100 is accommodated in the manhole 200, and the accommodating portion 30 resists the pushing force of the pushing member 40. The gripping rod 10 is protruded from the storage portion 30 by the pushing force of the push-out member 40 in a state where the cover member 100 is moved upward from the manhole 200.

本実施形態のカバー部材１００は、常時は、マンホール２００内に収納されており、マンホール２００の開口部から蓋部材７０を取り外した状態で、マンホール２００の開口部の上部を閉塞するようになっている。このカバー部材１００は、図５〜図７に示すように、本体部１１０と開閉蓋１２０とからなる。本体部１１０はマンホール２００の内径よりも若干小さい外径を有する筒状の部材であり、開閉蓋１２０は本体部１１０の上端部に回動可能（開閉可能）に取り付けた部材である。   The cover member 100 of the present embodiment is normally housed in the manhole 200, and closes the upper part of the opening of the manhole 200 with the lid member 70 removed from the opening of the manhole 200. Yes. As shown in FIGS. 5 to 7, the cover member 100 includes a main body 110 and an opening / closing lid 120. The main body 110 is a cylindrical member having an outer diameter slightly smaller than the inner diameter of the manhole 200, and the opening / closing lid 120 is a member attached to the upper end of the main body 110 so as to be rotatable (openable / closable).

＜本体部＞
本体部１１０は、例えば、アルミ材により形成された筒状の部材であり、軽量化を図るために複数のパンチング孔を開口してある。また、本体部１１０の下部には、梯子２０の上部を避けて本体部１１０をマンホール２００内に収納するための梯子開口部１３０と、マンホール２００の内壁面に設けた支持突起１４０を避けて本体部１１０をマンホール２００内に収納するための支持突起開口部１５０とを設けてある。また、本体部１１０の下部内周面には、本体部１１０を操作するための操作取っ手１７０を取り付けてある。 <Main body>
The main body 110 is a cylindrical member formed of, for example, an aluminum material, and has a plurality of punching holes in order to reduce the weight. Further, the main body 110 avoids the ladder opening 130 for accommodating the main body 110 in the manhole 200 and avoids the upper portion of the ladder 20 and the support protrusion 140 provided on the inner wall surface of the manhole 200. A support protrusion opening 150 for accommodating the portion 110 in the manhole 200 is provided. An operation handle 170 for operating the main body 110 is attached to the lower inner peripheral surface of the main body 110.

また、マンホール２００の開口部にカバー部材１００を取り付けていることを報知するために、本体部１１０の外周面はアクリル塗料等で着色してある。塗装色は特に限定されないが、第三者に注意を喚起するため、黄色、赤色、蛍光色等であることが好ましい。また、着色に代えて、あるいは着色とともに反射部材を取り付けてもよい。   In order to notify that the cover member 100 is attached to the opening of the manhole 200, the outer peripheral surface of the main body 110 is colored with an acrylic paint or the like. The paint color is not particularly limited, but is preferably yellow, red, fluorescent color or the like in order to call attention to a third party. Moreover, you may attach a reflecting member instead of coloring or with coloring.

＜開閉蓋＞
開閉蓋１２０は、本体部１１０の上端開放面を開閉するための板状の部材からなり、蝶番を用いて本体部１１０に開閉可能に取り付けてある。この開閉蓋１２０は、例えば透光性を有するアクリル樹脂により形成されている。このように、カバー部材１００の上面（開閉蓋１２０）が透光性を有しているため、マンホール２００内の照度を保つことができる。また、開閉蓋１２０の上面には、開閉蓋１２０を操作するための取っ手１６０を取り付けてある。 <Open / close lid>
The opening / closing lid 120 is made of a plate-like member for opening and closing the upper end open surface of the main body 110, and is attached to the main body 110 using a hinge so as to be opened and closed. The opening / closing lid 120 is made of, for example, a translucent acrylic resin. Thus, since the upper surface (opening / closing lid 120) of the cover member 100 has translucency, the illuminance in the manhole 200 can be maintained. A handle 160 for operating the opening / closing lid 120 is attached to the upper surface of the opening / closing lid 120.

＜カバー部材の着脱＞
マンホール２００の開口部を開放状態としたら、マンホール２００内に収容したカバー部材１００を引き出し、カバー部材１００を水平方向に回転させる。カバー部材１００の回転角度は、梯子開口部１３０が梯子２０の位置から外れるとともに、支持突起開口部１５０が支持突起１４０の位置から外れる角度である。この状態では、カバー部材１００の下端部を梯子２０の上部及び支持突起１４０に載置した状態となるので、カバー部材１００がマンホール２００から突出した状態で、マンホール２００の開口部の上部を閉塞することができる。 <Removal of cover member>
When the opening of the manhole 200 is opened, the cover member 100 accommodated in the manhole 200 is pulled out and the cover member 100 is rotated in the horizontal direction. The rotation angle of the cover member 100 is an angle at which the ladder opening 130 is out of the position of the ladder 20 and the support protrusion 150 is out of the position of the support protrusion 140. In this state, since the lower end portion of the cover member 100 is placed on the upper portion of the ladder 20 and the support protrusion 140, the upper portion of the opening portion of the manhole 200 is closed with the cover member 100 protruding from the manhole 200. be able to.

そして、開閉蓋１２０を開状態とすることにより、作業者がマンホール２００内へ出入したり、工具を出し入れしたりすることができる。また、開閉蓋１２０を閉状態とすることにより、マンホール２００の開口部を閉塞して、雨水等の侵入を最小限とすることができる。カバー部材１００の側面（本体部１１０）は着色されているので、マンホール２００が開放状態となっていることを、通行人等に確実に報知することができる。   Then, by opening the opening / closing lid 120, the operator can enter and exit the manhole 200 and insert and remove tools. In addition, by closing the opening / closing lid 120, the opening of the manhole 200 can be closed to minimize the intrusion of rainwater or the like. Since the side surface (main body portion 110) of the cover member 100 is colored, it is possible to reliably notify passersby that the manhole 200 is in an open state.

マンホール２００内での作業が終了したら、梯子開口部１３０が梯子２０の位置となり、支持突起開口部１５０が支持突起１４０の位置となるようにカバー部材１００を回転させて、カバー部材１００をマンホール２００内に収納する。この状態では、梯子開口部１３０の上部が梯子２０に載置され、支持突起開口部１５０の上部が支持突起１４０に載置される。   When the work in the manhole 200 is completed, the cover member 100 is rotated so that the ladder opening 130 is located at the ladder 20 and the support protrusion 150 is located at the support protrusion 140, so that the cover member 100 is moved to the manhole 200. Store inside. In this state, the upper part of the ladder opening 130 is placed on the ladder 20, and the upper part of the support projection opening 150 is placed on the support protrusion 140.

＜カバー部材の作用効果＞
カバー部材１００を設けることにより、マンホール２００を開放状態とした際に、マンホール２００内からカバー部材１００を取り出して、マンホール２００の開口部を閉塞し、通行人等の落下を防止することができる。 <Operation effect of cover member>
By providing the cover member 100, when the manhole 200 is opened, the cover member 100 can be taken out from the manhole 200 to close the opening of the manhole 200 and prevent a passerby or the like from falling.

また、カバー部材１００の上部を、透光性を有する部材とすることにより、開口部にカバー部材１００を取り付けても、マンホール２００内の照度を保つことができる。また、カバー部材１００の側面を着色することにより、マンホール２００が開放状態となっていることを、通行人等に確実に報知することができる。さらに、カバー部材１００の上部に開閉蓋１２０を設けることにより、マンホール２００の開口部にカバー部材１００を取り付けたまま、作業者がマンホール２００内へ出入したり、工具を出し入れしたりすることができる。   Moreover, even if the cover member 100 is attached to the opening, the illuminance in the manhole 200 can be maintained by making the upper part of the cover member 100 a light-transmitting member. Further, by coloring the side surface of the cover member 100, it is possible to reliably notify a passerby that the manhole 200 is in an open state. Furthermore, by providing the opening / closing lid 120 on the upper part of the cover member 100, an operator can go in and out of the manhole 200 and put in and out tools while the cover member 100 is attached to the opening of the manhole 200. .

１０ 掴み棒
２０ 梯子
３０ 収納部
４０ 押出部材
５０ 固定部
６０ 繋留部材
７０ 蓋部材
１００ カバー部材
１１０ 本体部
１２０ 開閉蓋
１３０ 梯子開口部
１４０ 支持突起
１５０ 支持突起開口部
１６０ 取っ手
１７０ 操作取っ手
２００ マンホール DESCRIPTION OF SYMBOLS 10 Grasping rod 20 Ladder 30 Storage part 40 Extrusion member 50 Fixing part 60 Anchoring member 70 Lid member 100 Cover member 110 Main body part 120 Opening and closing lid 130 Ladder opening 140 Support protrusion 150 Support protrusion opening 160 Handle 170 Operation handle 200 Manhole

Claims (1)

マンホール内に設置した複数段の梯子と、
前記梯子の上方に設置することにより、前記マンホールに出入する作業者の手掛けとなる掴み棒と、
前記梯子の上部付近に設置され、前記掴み棒を収容する収納部と、
前記収納部の底部に設置され、前記掴み棒を上方へ向かって押し出す押出部材と、
前記収納部の近傍に設置され、前記掴み棒を前記マンホールから突出した状態で固定する固定部と、
前記掴み棒をマンホール内に繋ぎ止める繋留部材と、
を備え、
前記掴み棒は、前記マンホールの開口部に蓋部材を取り付けた状態で、前記押出部材の押出力に抗して前記収納部内に収納され、前記マンホールの開口部から蓋部材を取り外した状態で、前記押出部材の押出力により前記収納部内から突出することを特徴とするマンホールの出入補助装置。 A multi-stage ladder installed in the manhole,
A gripping rod that serves as a handle for an operator entering and exiting the manhole by being installed above the ladder;
A storage unit installed near the top of the ladder and storing the gripping bar;
An extrusion member that is installed at the bottom of the storage unit and pushes the gripping bar upward;
A fixing portion installed in the vicinity of the storage portion and fixing the gripping rod in a state of protruding from the manhole;
A tether for securing the gripping rod in the manhole;
With
The gripping rod is housed in the housing portion against the pushing force of the pushing member, with the lid member attached to the opening portion of the manhole, and with the lid member removed from the opening portion of the manhole, A manhole entrance / exit assisting device that protrudes from the inside of the storage portion by the pushing force of the pushing member.
JP2016105230A 2016-05-26 2016-05-26 Manhole entry/exit support device Active JP6732538B2 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20200056643A (en) * 2018-11-15 2020-05-25 한국전력공사 Safety device for underground structure

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20200056643A (en) * 2018-11-15 2020-05-25 한국전력공사 Safety device for underground structure
KR102545487B1 (en) * 2018-11-15 2023-06-21 한국전력공사 Safety device for underground structure

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