JP2019148097A - Suspension type folding scaffold - Google Patents

Suspension type folding scaffold Download PDF

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JP2019148097A
JP2019148097A JP2018032489A JP2018032489A JP2019148097A JP 2019148097 A JP2019148097 A JP 2019148097A JP 2018032489 A JP2018032489 A JP 2018032489A JP 2018032489 A JP2018032489 A JP 2018032489A JP 2019148097 A JP2019148097 A JP 2019148097A
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scaffold
frame
elevating
work
lifting
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雅博 楠本
Masahiro Kusumoto
雅博 楠本
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Daiichi Consultants Co Ltd
Daiichi-Consultants Co Ltd
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Daiichi Consultants Co Ltd
Daiichi-Consultants Co Ltd
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Abstract

To provide a suspension type folding scaffold that improves work efficiency by being made foldable while ensuring safety, that greatly shortens installation work time, and can be compacted for transportation.SOLUTION: A suspension type folding scaffold 1 comprises: a work platform 2; an elevation part 3 extending upward from the work platform 2 and connected to the work platform 2 by a pin joint; a crossover part 4 connected to the elevation part 3 by a pin joint; and a support part 5 connected to the distal end side of the crossover part 4 and integrally supporting the work platform 2, the elevation part 3, and the crossover part 4. The elevation part 3 comprises a plurality of elevation part frames divided in the vertical direction. A connection part 9 between one elevation part frame 7 and the other elevation part frame 8 is connected by a pin joint. The elevation part 3 rotates with respect to the work platform 2 and the crossover part 4, while the one elevation part frame 7 and the other elevation part frame 8 are configured to be foldable by bending at the connection part 9.SELECTED DRAWING: Figure 1

Description

本発明は、橋梁の桁下等における点検や補修、補強等の維持管理作業に好適な懸垂式折りたたみ足場に関する。   The present invention relates to a suspended folding scaffold suitable for maintenance work such as inspection, repair, reinforcement, etc. under a bridge under a girder.

従来、橋梁の桁下等における点検や補修、補強等の維持管理作業を行う際には、橋梁の地覆、防護柵や高欄の支柱にチェーンを固定し、このチェーンに鋼管を吊り下げ、鋼管間に作業足場となる足場板を設置した吊り足場が用いられる。   Conventionally, when performing maintenance work such as inspection, repair, reinforcement, etc. under bridge girders, etc., a chain is fixed to the ground cover of the bridge, a protective fence or a railing column, and a steel pipe is suspended from this chain. A suspended scaffold with a scaffolding plate as a working scaffold in between is used.

また、設置作業時間の短縮、安全性の確保等を目的とした吊り足場が種々、開示されている(例えば、特許文献1及び特許文献2参照)。特許文献1に記載された吊り足場は、側面略コ字状のフレーム材は、高架橋等の高欄の上端を下側から挿入し、該高欄の上端部を高欄の外側面側へのネジの押圧で挟み込むことで高欄上端に固定する挟持部を端部に形成し、かつ、高欄上で高架橋等の外側方向に向けて水平に架設する上横枠と、この上横枠の先端部側に連結される垂下枠と、この垂下枠の下部から高架橋等の方向に水平に突出する下横枠とにより構成され、前記上横枠は前記垂下枠よりも太径の強度部材でハンガータイプのものとして前記垂下枠以下を吊り支承し、前記上横枠の先端部と垂下枠との結合コーナーに対してトラス枠を構成する補強フレームを架設して吊り補強部を形成し、さらに垂下枠の途中から壁当て支承梁材をその先端部を高欄外側面に向けて突設し、かかる側面略コ字状のフレーム材を高欄の上端を前記挟持部で挟み込むことで高欄の外側垂直側壁の連続方向に沿って所定ピッチで並置させ、かつ、横地材で一体的に連結し、前記下横枠上に足場板架け渡し、前記挟持部で行う挟持に対応して壁当て支承梁材で高欄外側面からの支持反力を得ることを特徴としている。   Various suspension scaffolds for the purpose of shortening the installation work time and ensuring safety have been disclosed (see, for example, Patent Document 1 and Patent Document 2). In the suspended scaffold described in Patent Document 1, the frame material having a substantially U-shaped side is inserted from the lower end of the rail of the elevated bridge or the like, and the upper end of the rail is pressed to the outer surface of the rail. The upper part of the upper frame is connected to the top side of the upper horizontal frame. And a lower horizontal frame that protrudes horizontally in the direction of viaduct or the like from the lower part of the hanging frame, and the upper horizontal frame is a hanger type of thicker strength member than the hanging frame. The suspension frame is suspended below the suspension frame, a reinforcement frame that constitutes the truss frame is erected from the corner of the upper horizontal frame and the suspension frame to form a suspension reinforcement portion, and from the middle of the suspension frame The wall support beam is projected with its tip facing the railing outer surface. The frame material having a substantially U-shaped side surface is juxtaposed at a predetermined pitch along the continuous direction of the outer vertical side wall of the rail by sandwiching the upper end of the rail with the clamping part, and is integrally connected with a horizontal material, A scaffold plate is spanned on the lower horizontal frame, and a support reaction force from the outer surface of the rail is obtained by a wall-supporting beam material corresponding to the clamping performed by the clamping unit.

この特許文献1に記載された吊り足場によると、高架橋等の高欄の上端を下側から挿入して、高欄の上端部を着脱自在に挟み込むことで、簡単かつ迅速に設置および撤去ができ、しかも、力のかかる部分の強度を十分に計算して安定した状態で荷重を支えることができる吊り足場を提供することができる、と記載されている。   According to the suspension scaffold described in Patent Document 1, it is possible to easily and quickly install and remove by inserting the upper end of a railing such as a viaduct from the lower side and detachably sandwiching the upper end of the railing. It is described that a suspension scaffold capable of supporting a load in a stable state by sufficiently calculating the strength of a portion to which a force is applied can be provided.

また、特許文献2に記載された橋梁用吊り足場は、橋梁の下面側で前記橋梁を横断する足場ステージ部材を設け、橋梁の路面に対して接地するための支持脚部材を取り付ける支持部を上部に備え、且つ、下部に前記足場ステージ部材を連結保持可能なステージホルダー部を備え、前記ステージホルダー部には、前記足場ステージ部材の一端部を前記橋梁の幅方向中央部側に向けて出退自在に、前記足場ステージ部材を組み付けてあり、前記支持部は、前記吊足場本体枠を前記橋梁の横外側に配置する状態で、前記支持脚部材を前記橋梁の路面に接地可能に取り付けるべく前記橋梁の幅方向中央側に向けて前記吊足場本体枠の上部から延設してあり、全体の重心位置を、前記支持脚部材の接地部と前記吊足場本体枠との間に位置するように形成してあることを特徴としている。   Further, the suspension scaffold for a bridge described in Patent Document 2 is provided with a scaffold stage member that crosses the bridge on the lower surface side of the bridge, and a support portion for attaching a support leg member for grounding to the road surface of the bridge. And a stage holder portion capable of connecting and holding the scaffold stage member at a lower portion thereof, wherein the stage holder portion has one end portion of the scaffold stage member toward and away from the center in the width direction of the bridge. The scaffold stage member is freely assembled, and the support portion is configured to attach the support leg member to the road surface of the bridge in a state where the suspension scaffold body frame is disposed on a laterally outer side of the bridge. It extends from the upper part of the suspension scaffold body frame toward the center in the width direction of the bridge, and the entire center of gravity is positioned between the grounding portion of the support leg member and the suspension scaffold body frame. Formation Is characterized in that are.

この特許文献2に記載された吊り足場によると、吊り足場の設置作業時間を短縮でき、且つ安全性及び省力化を確保でき、しかも設置後において一般車両の通行を妨げることのない吊り足場を提供することができる、と記載されている。   According to the suspension scaffold described in Patent Document 2, it is possible to shorten the installation work time of the suspension scaffold, ensure safety and labor saving, and provide a suspension scaffold that does not hinder the passage of ordinary vehicles after installation. It can be done.

特許第4574705号公報Japanese Patent No. 4574705 特開2017−115569号公報JP 2017-115569 A

しかしながら、従来のチェーン及び鋼管を使用した吊り足場によると、この吊り足場を設置するにあたって、地覆や防護柵等にチェーンを固定するための工事用専用足場の設置が追加で必要となる場合がある。また、鋼管をチェーンに吊り下げる作業、或いはチェーンからの撤去する作業は非常に危険を伴うと共に、吊り足場自体の設置作業工程が多いため、設置作業に時間を要する。   However, according to the conventional suspension scaffolds using chains and steel pipes, when installing this suspension scaffold, it may be necessary to additionally install a dedicated scaffold for construction to fix the chain to the ground cover or protective fence. is there. In addition, the work of suspending the steel pipe from the chain or the work of removing it from the chain is very dangerous, and the installation work takes time because there are many installation work processes for the suspension scaffold itself.

特許文献1に記載された吊り足場によると、チェーン及び鋼管を使用した従来の吊り足場と比較して、設置作業時間の短縮化は図られるものと思料する。   According to the suspension scaffold described in Patent Document 1, it is considered that the installation work time can be shortened as compared with a conventional suspension scaffold using a chain and a steel pipe.

しかしながら、上記特許文献1に記載された吊り足場は高欄の上端部を挟持する形式であるため、高欄や防護柵等の被挟持部がない橋梁では吊り足場の設置ができないものと思料する。   However, since the suspension scaffold described in the above-mentioned Patent Document 1 is a type that sandwiches the upper end of the handrail, it is considered that the suspension scaffold cannot be installed on a bridge that does not have a sandwiched portion such as a handrail or a protective fence.

一方、特許文献2に記載された吊り足場によると、高欄や防護柵等の被挟持部がなくとも設置が可能であると共に、設置作業時間の短縮化、安全性の確保等が可能であるものと思料する。   On the other hand, according to the suspension scaffold described in Patent Document 2, it can be installed without a clamped part such as a handrail or a protective fence, and can shorten the installation work time and ensure safety. I think.

しかしながら、特に山間部等に架設された有効幅員が幅狭な橋梁の点検や補修等においては、安全性を確保しつつ、作業効率の向上による設置作業時間の更なる短縮化が求められると共に、搬送時におけるコンパクト化も求められている。   However, especially in the inspection and repair of bridges with a narrow effective width installed in mountainous areas, etc., while ensuring safety, further shortening of installation work time by improving work efficiency is required, There is also a demand for compactness during transportation.

そこで本願発明者は、上記の問題点に鑑み、安全性を確保しつつ、折りたたみ可能な構成とすることによって作業効率を向上させ、設置作業時間の大幅な短縮化を図ると共に、搬送時におけるコンパクト化を図った懸垂式の折りたたみ足場を提供するべく鋭意検討を重ねた結果、本発明に至ったのである。   In view of the above problems, the inventor of the present application improves the working efficiency by ensuring a foldable structure while ensuring safety, greatly shortens the installation work time, and is compact during transportation. As a result of intensive investigations to provide a suspended folding scaffolding that has been realized, the present invention has been achieved.

即ち、本発明の懸垂式折りたたみ足場は、作業足場と、前記作業足場から上方に向かって延設され、前記作業足場とピン接合により連結される昇降部と、前記昇降部にピン接合により連結される渡り部と、前記渡り部の先端側に連結され、前記作業足場、前記昇降部及び前記渡り部を一体に支持する支持部と、を含んで成り、前記昇降部が上下方向に分割された複数の昇降部枠体で構成され、一の前記昇降部枠体と他の前記昇降部枠体との連結部がピン接合によって連結され、前記作業足場及び前記渡り部に対して前記昇降部が回動すると共に、前記一の昇降部枠体と前記他の昇降部枠体とが連結部において屈曲することによって折りたたみ可能に構成されていることを特徴とする。   That is, the suspended folding scaffold according to the present invention is connected to the work scaffold, the lifting part extending upward from the work scaffold, and connected to the work scaffold by pin joining, and connected to the lifting part by pin joining. And a support portion that is connected to a front end side of the crossover portion and that integrally supports the work scaffold, the elevating portion, and the crossover portion, and the elevating portion is divided in the vertical direction. It is composed of a plurality of elevating part frames, and a connecting part between one elevating part frame and the other elevating part frame is connected by pin joining, and the elevating part is connected to the working scaffold and the transition part. While being rotated, the one lifting part frame and the other lifting part frame are configured to be foldable by bending at a connecting part.

また、本発明の懸垂式折りたたみ足場において、前記支持部がカウンタウェイトを備え、前記カウンタウェイトがハンプ構造をなすことを特徴とする。   In the suspended folding scaffold according to the present invention, the support portion includes a counterweight, and the counterweight has a hump structure.

更に、本発明の懸垂式折りたたみ足場において、前記複数の昇降部枠体の上下方向に沿って複数の梯子部材が配設され、前記複数の梯子部材が前記複数の昇降部枠体にピン接合によって連結されていることを特徴とする。   Furthermore, in the suspended folding scaffold according to the present invention, a plurality of ladder members are disposed along the vertical direction of the plurality of lifting unit frames, and the plurality of ladder members are connected to the plurality of lifting unit frames by pin joining. It is connected.

また、本発明の懸垂式折りたたみ足場において、前記昇降部に複数の柵部材を備えることを特徴とする。   Moreover, the suspended folding scaffold according to the present invention is characterized in that the elevating part includes a plurality of fence members.

本発明の懸垂式折りたたみ足場によると、作業足場と、昇降部と、渡り部とがピン接合されると共に、昇降部を構成する複数の昇降部枠体同士もピン接合されているため、作業足場及び渡り部に対して昇降部が回動すると共に、昇降部を連結部で屈曲させることによって、本発明の懸垂式折りたたみ足場全体を折りたたみ可能に構成することができる。従って、渡り部を吊り上げることによって作業足場の重量で昇降部が自動展開するため、設置作業における作業効率を大幅に向上することができ、設置作業時間の大幅な短縮化が図られる。   According to the suspended folding scaffold according to the present invention, the work scaffold, the lifting part, and the crossing part are pin-joined, and a plurality of lift part frames constituting the lift part are also pin-joined. And while the raising / lowering part rotates with respect to a crossing part, the whole raising / lowering folding scaffold of this invention can be comprised by bend | folding by bending a raising / lowering part by a connection part. Therefore, since the lifting part is automatically deployed by the weight of the work scaffold by lifting the crossing part, the work efficiency in the installation work can be greatly improved, and the installation work time can be greatly shortened.

また、昇降部が折りたたみ可能に構成されることによって、搬送時におけるコンパクト化も図られ、比較的小型のトラックでの搬送も可能となる。   In addition, since the elevating part is configured to be foldable, it can be made compact during transportation, and can be transported by a relatively small truck.

また、本発明の懸垂式折りたたみ足場において、支持部がカウンタウェイトを備え、このカウンタウェイトがハンプ構造(平板状)をなすことによって、本発明の懸垂式折りたたみ足場を設置後は、有効幅員が幅狭な橋梁であっても車両の通行や通行人の往来を妨げることなく、橋梁の点検や補修等を行うことができる。   Further, in the suspended folding scaffold according to the present invention, the support portion includes a counterweight, and the counterweight has a hump structure (flat plate shape), so that after the suspended folding scaffold according to the present invention is installed, the effective width is wide. Even a narrow bridge can be inspected and repaired without hindering the passage of vehicles and traffic.

また、本発明の懸垂式折りたたみ足場において、複数の昇降部枠体の上下方向に沿って複数の梯子部材が配設され、この複数の梯子部材が複数の昇降部枠体にピン接合によって連結されていることによって、昇降部を折りたたみ可能に構成した状態で作業員の昇降用梯子を配設することができ、足場の設置作業効率及び安全性の向上が図られる。   Further, in the suspended folding scaffold according to the present invention, a plurality of ladder members are disposed along the vertical direction of the plurality of lifting unit frames, and the plurality of ladder members are connected to the plurality of lifting unit frames by pin joining. Thus, the ladder for raising and lowering the worker can be disposed in a state in which the elevating part is configured to be foldable, so that the installation work efficiency and safety of the scaffold can be improved.

また、本発明の懸垂式折りたたみ足場において、昇降部に複数の柵部材を備えることによって、作業員が昇降部を昇降移動する際の安全性の更なる向上が図られる。   Further, in the suspended folding scaffold according to the present invention, by providing the lifting part with a plurality of fence members, the safety when the worker moves up and down the lifting part can be further improved.

本発明の一実施形態に係る懸垂式折りたたみ足場の設置状況を示す正面図である。It is a front view which shows the installation condition of the suspension type folding scaffold which concerns on one Embodiment of this invention. 図1に示した懸垂式折りたたみ足場に係る昇降部の左側面図である。It is a left view of the raising / lowering part which concerns on the suspension type folding scaffold shown in FIG. 図1に示した懸垂式折りたたみ足場に係る支持部の右側面図である。It is a right view of the support part which concerns on the suspension type folding scaffold shown in FIG. 図1に示した懸垂式折りたたみ足場を折りたたんだ状態を示す正面図である。It is a front view which shows the state which folded the suspension type folding scaffold shown in FIG. 図1に示した懸垂式折りたたみ足場を展開する途中段階を示す正面図である。It is a front view which shows the middle stage which expand | deploys the suspension type folding scaffold shown in FIG. 本発明の他の実施形態に係る懸垂式折りたたみ足場の設置状況を示す概略正面図である。It is a schematic front view which shows the installation condition of the suspension type folding scaffold which concerns on other embodiment of this invention. 図6に示した懸垂式折りたたみ足場を折りたたんだ状態を示す正面図である。It is a front view which shows the state which folded the suspension type folding scaffold shown in FIG.

以下、本発明の懸垂式折りたたみ足場の実施形態について、図面に基づいて詳述する。図1は、本発明の一実施形態に係る懸垂式折りたたみ足場1の設置状況を示す概略正面図である。同図に示すように、本実施形態の懸垂式折りたたみ足場1は、橋梁Aの桁下等における点検や補修、補強等の維持管理作業に好適な懸垂式の折りたたみ足場であって、作業足場2と、作業足場2から上方に向かって延設され、作業足場2とピン接合により連結される昇降部3と、昇降部3にピン接合により連結される渡り部4と、渡り部4の先端側に連結され、作業足場2、昇降部3及び渡り部4を一体に支持する支持部5と、を含んで成る。   Hereinafter, an embodiment of a suspended folding scaffold according to the present invention will be described in detail with reference to the drawings. FIG. 1 is a schematic front view showing an installation state of a suspended folding scaffold 1 according to an embodiment of the present invention. As shown in the figure, a suspended folding scaffold 1 of the present embodiment is a suspended folding scaffold suitable for maintenance work such as inspection, repair, reinforcement, etc. under the bridge A, etc. And an elevating part 3 that extends upward from the work scaffold 2 and is connected to the work scaffold 2 by pin joint, a transition part 4 that is coupled to the lift part 3 by pin joint, and a distal end side of the transition part 4 And a support portion 5 that integrally supports the work scaffold 2, the lifting / lowering portion 3, and the crossover portion 4.

作業足場2は、図1に示すようにトラス構造をなしているが、当該構造に限定されず、スラブ構造であってもよい。また、この作業足場2の上面側周縁には、後述する組立作業時において、手摺りが設置されることが好ましい。手摺りを設置することによって、作業足場2上における点検等の作業時の安全性が確保される。   The work scaffold 2 has a truss structure as shown in FIG. 1, but is not limited to this structure, and may have a slab structure. Moreover, it is preferable that a handrail be installed on the upper surface side periphery of the work scaffold 2 during assembly work described later. By installing the handrail, safety during work such as inspection on the work scaffold 2 is ensured.

この作業足場2の前端2a側は橋梁Aの桁下に張り出した状態となり、後端2b側には、図1及び図2に示すように、昇降部3がピン接合によって連結される。昇降部3は、本実施形態の懸垂式折りたたみ足場1が組み立てられた状態のとき、作業足場2から上方に向かって延設された状態となる。本実施形態においては、昇降部3の下端3a側と、作業足場2の後端2b側とがピンP1、P2によるピン接合によって連結されている。   The front end 2a side of the work scaffold 2 is in a state of projecting below the bridge A, and the elevating part 3 is connected to the rear end 2b side by pin joining as shown in FIGS. When the suspended folding scaffolding 1 according to the present embodiment is assembled, the elevating unit 3 is extended upward from the work scaffold 2. In the present embodiment, the lower end 3a side of the elevating unit 3 and the rear end 2b side of the work scaffold 2 are connected by pin joining using pins P1 and P2.

そして、本実施形態に係る昇降部3は、上下方向に分割された複数の昇降部枠体6、6・・で構成されている。昇降部3の分割数、つまり昇降部3を構成する昇降部枠体6の構成数は特に限定されないが、昇降部枠体6の構成数は2〜3であることが、昇降部3の構成が複雑化しすぎず、昇降部3の強度や組立時の作業性等の観点からも特に好ましい。本実施形態においては、昇降部3を上側の昇降部枠体7と下側の昇降部枠体8との二分割で構成している。   And the raising / lowering part 3 which concerns on this embodiment is comprised by the several raising / lowering part frame 6, 6, ... divided | segmented to the up-down direction. The number of divisions of the lifting unit 3, that is, the number of configurations of the lifting unit frame 6 constituting the lifting unit 3 is not particularly limited, but the configuration number of the lifting unit frame 6 is 2 to 3. Is not particularly complicated, and is particularly preferable from the viewpoint of the strength of the elevating unit 3 and workability during assembly. In the present embodiment, the elevating part 3 is constituted by two divisions of an upper elevating part frame 7 and a lower elevating part frame 8.

また、これら上側の昇降部枠体7(=一の昇降部枠体6)と下側の昇降部枠体8(=他の昇降部枠体6)との連結部9がピン接合によって連結されている。具体的には、本実施形態に係る昇降部枠体7の下端7a側と、昇降部枠体8の上端8a側との連結部9がピンP3、P4によるピン接合によって連結されている。   In addition, a connecting portion 9 between the upper elevating part frame body 7 (= one elevating part frame body 6) and the lower elevating part frame body 8 (= the other elevating part frame body 6) is connected by pin joining. ing. Specifically, the connecting portion 9 between the lower end 7a side of the elevating part frame body 7 and the upper end 8a side of the elevating part frame body 8 according to the present embodiment is connected by pin joining using pins P3 and P4.

更に、本実施形態に係る昇降部3を構成する複数の昇降部枠体6(本実施形態では上側の昇降部枠体7と下側の昇降部枠体8)には、その上下方向に沿って複数の梯子部材10が配設されている。これら複数の梯子部材10は、昇降部3を構成する本実施形態に係る昇降部枠体7、8に、ピンP5、P6によるピン接合によって連結されている。   Further, the plurality of lifting part frame bodies 6 (in this embodiment, the upper lifting part frame body 7 and the lower lifting part frame body 8 in this embodiment) that constitute the lifting part 3 according to the present embodiment are arranged along the vertical direction thereof. A plurality of ladder members 10 are arranged. The plurality of ladder members 10 are connected to the lifting part frame bodies 7 and 8 according to the present embodiment constituting the lifting part 3 by pin joining with pins P5 and P6.

また、上記の昇降部3の上方には、ピン接合によって渡り部4が連結される。本実施形態においては、渡り部4の前端4a側は橋梁Aの桁上に張り出した状態となり、後端4b側に昇降部3の上端3b側がピンP7、P8によるピン接合によって連結されている。なお、図1に示すように、渡り部4も本実施形態に係る作業足場2と同様、トラス構造をなしているが、当該構造に限定されず、スラブ構造であってもよい。また、この渡り部4の上面側周縁にも、後述する組立作業時において、手摺りが設置されることが好ましい。   Moreover, the crossover part 4 is connected above the said raising / lowering part 3 by pin joining. In the present embodiment, the front end 4a side of the crossover portion 4 is in a state of overhanging the beam of the bridge A, and the upper end 3b side of the elevating / lowering portion 3 is connected to the rear end 4b side by pin joining with pins P7 and P8. As shown in FIG. 1, the crossover portion 4 also has a truss structure like the work scaffold 2 according to the present embodiment, but is not limited to this structure, and may have a slab structure. Moreover, it is preferable that a handrail is also installed on the upper surface side periphery of the crossover portion 4 at the time of assembly work described later.

そして、本実施形態に係る上記の渡り部4の先端4a側には、支持部5が連結される。支持部5は、図3に示すように、主として支持部枠11と、この支持部枠11が連結されるカウンタウェイト12とを含んで構成される。   And the support part 5 is connected with the front-end | tip 4a side of said transition part 4 which concerns on this embodiment. As shown in FIG. 3, the support portion 5 mainly includes a support portion frame 11 and a counterweight 12 to which the support portion frame 11 is connected.

本実施形態では、支持部5に係る支持部枠11の上端11a側に渡り部4の先端4a側がピンP9、P10によるピン接合によって連結されている。また、支持部枠11の下端11b側にはカウンタウェイト12が連結されている。つまり、橋梁A上に設置される支持部枠11及びカウンタウェイト12を含んで構成される支持部5によって、本実施形態の懸垂式折りたたみ足場1に係る作業足場2、昇降部3及び渡り部4が一体に支持されることとなる。   In this embodiment, the front end 4a side of the crossover portion 4 is connected to the upper end 11a side of the support portion frame 11 related to the support portion 5 by pin joining using pins P9 and P10. A counterweight 12 is connected to the lower end 11 b side of the support portion frame 11. That is, the work scaffold 2, the lifting / lowering section 3, and the crossover section 4 according to the suspended folding scaffold 1 of the present embodiment are provided by the support section 5 including the support section frame 11 and the counterweight 12 installed on the bridge A. Will be supported integrally.

なお、本実施形態に係る支持部5を構成する支持部枠11の高さは特に限定されず、橋梁Aが備える防護柵Bや高欄、地覆等の高さに応じて適宜選択される。   In addition, the height of the support part frame 11 which comprises the support part 5 which concerns on this embodiment is not specifically limited, It selects suitably according to the height of the guard fence B with which the bridge A is equipped, a handrail, a ground cover, etc.

また、本実施形態に係る支持部5はカウンタウェイト12を備えるが、支持部5を構成する支持部枠11を橋梁1に係る防護柵Bや地覆等に直接固定することが可能であれば、必ずしもカウンタウェイト12を備えなくてもよい。しかし、橋梁Aに係る防護柵Bや地覆等に支持部枠11を固定するための作業が発生したり、防護柵B等の強度が問題となったりするため、本実施形態の懸垂式折りたたみ足場1を支持可能なカウンタウェイト12を予め備えておくことが好ましい。   Moreover, although the support part 5 which concerns on this embodiment is provided with the counterweight 12, if the support part frame 11 which comprises the support part 5 can be directly fixed to the guard fence B, ground cover, etc. which concern on the bridge 1, it is possible. The counterweight 12 is not necessarily provided. However, since the work for fixing the support part frame 11 to the protective fence B or the ground cover related to the bridge A occurs or the strength of the protective fence B becomes a problem, the suspension type folding of the present embodiment It is preferable that a counterweight 12 capable of supporting the scaffold 1 is provided in advance.

更に、本実施形態に係る支持部5が備えるカウンタウェイト12の形状も特に限定されず、直方体等の立体形状のカウンタウェイトであってもよいが、図1に示すような、ハンプ構造(平板状)をなすことが好ましい。カウンタウェイト12の形状をハンプ構造(平板状)とすることによって、本実施形態の懸垂式折りたたみ足場1を橋梁Aに設置した際、橋梁A上に設置したカウンタウェイト12が車両の通行や通行人の往来を妨げることがないため、橋梁Aの有効幅員が幅狭な場合であっても、車両の通行止めや片側交互通行といった通行制限をすることなく橋梁の点検や補修等を行うことができる。   Further, the shape of the counterweight 12 provided in the support portion 5 according to the present embodiment is not particularly limited, and may be a three-dimensional counterweight such as a rectangular parallelepiped. However, a hump structure (flat plate shape) as shown in FIG. ) Is preferable. By setting the shape of the counterweight 12 to a hump structure (flat plate shape), when the suspended folding scaffolding 1 according to the present embodiment is installed on the bridge A, the counterweight 12 installed on the bridge A is used for traffic and passers-by of vehicles. Therefore, even if the effective width of the bridge A is narrow, the bridge can be inspected and repaired without restricting traffic such as blocking the vehicle or passing on one side.

以上の構成を備える本実施形態の懸垂式折りたたみ足場1は、作業足場2と、昇降部3と、渡り部4とがピン接合によって連結されている。更に、昇降部3が上側の昇降部枠体7と下側の昇降部枠体8との二分割で構成されると共に、これら上側の昇降部枠体7(=一の昇降部枠体6)と下側の昇降部枠体8(=他の昇降部枠体6)との連結部9、及び昇降部枠体7、8に配設される複数の梯子部材10もピン接合によって連結されている。従って、本実施形態の懸垂式折りたたみ足場1は、図4に示すように、作業足場2及び渡り部4に対して昇降部3が回動すると共に、上側の昇降部枠体7と下側の昇降部枠体8との連結部9において昇降部3が屈曲することによって、懸垂式折りたたみ足場1を折りたたみ可能に構成することができる。   In the suspended folding scaffolding 1 according to the present embodiment having the above-described configuration, the work scaffold 2, the elevating part 3, and the crossing part 4 are connected by pin joining. Further, the elevating unit 3 is divided into an upper elevating unit frame 7 and a lower elevating unit frame 8, and the upper elevating unit frame 7 (= one elevating unit frame 6). And a plurality of ladder members 10 disposed on the lifting part frame bodies 7 and 8 are also connected by pin joining. Yes. Therefore, as shown in FIG. 4, the hanging type folding scaffold 1 of the present embodiment is configured such that the lifting unit 3 rotates with respect to the work platform 2 and the crossing unit 4, and the upper lifting unit frame 7 and the lower unit frame 7. The lifting type folding scaffold 1 can be configured to be foldable by bending the lifting part 3 at the connecting part 9 with the lifting part frame 8.

また、橋梁Aに本実施形態の懸垂式折りたたみ足場1を設置する際は、懸垂式折りたたみ足場1に係る渡り部4を吊り上げることによって、図5に示すように、作業足場2の重量で昇降部3が自動展開していくため、設置作業における作業効率を大幅に向上することができ、設置作業時間の大幅な短縮化が図られる。なお、渡り部4の上面側周縁に手摺りを設置する場合は、渡り部4を吊り上げる前段階で手摺りを設置しておくことが好ましい。   Further, when installing the suspended folding scaffold 1 of the present embodiment on the bridge A, the lifting part is lifted by the weight of the work scaffold 2 as shown in FIG. Since 3 automatically expands, the work efficiency in the installation work can be greatly improved, and the installation work time can be greatly shortened. In addition, when installing a handrail in the upper surface side periphery of the transition part 4, it is preferable to install a handrail in the step before lifting the transition part 4. FIG.

以上のように、渡り部4を吊り上げて昇降部3が完全に展開した状態で作業足場2を橋梁Aの桁下における所定位置に配設し、橋梁A上に配設した支持部5に連結することによって、作業足場2、昇降部3及び渡り部4が支持部5で一体に支持され、本実施形態の懸垂式折りたたみ足場1の設置が完了する。   As described above, the work scaffold 2 is disposed at a predetermined position under the bridge A in a state where the crossing portion 4 is lifted and the elevating portion 3 is fully deployed, and is connected to the support portion 5 disposed on the bridge A. By doing so, the work scaffold 2, the elevating part 3, and the crossing part 4 are integrally supported by the support part 5, and the installation of the suspended folding scaffold 1 of this embodiment is completed.

一方、懸垂式折りたたみ足場1を撤去する際は、支持部5から渡り部4を外して吊り上げ、懸垂式折りたたみ足場1を搬送するためのトラックの荷台等に作業足場2を載置する。そして、そのまま渡り部4を下ろしていくと、作業足場2及び渡り部4に対して昇降部3が回動すると共に、昇降部3が連結部9において屈曲し、図5に示す状態を経て、図4に示す状態に折りたたむことができる。このように、本実施形態の懸垂式折りたたみ足場1に係る昇降部3が折りたたみ可能に構成されることによって、搬送時におけるコンパクト化も図られ、比較的小型のトラックでの搬送も可能となる。従って、山間部等にある橋梁のように、作業現場までの道中が幅狭の場合であっても、本実施形態の懸垂式折りたたみ足場1を搬送し、設置することが可能となる。   On the other hand, when removing the suspended folding scaffolding 1, the crossover part 4 is removed from the support part 5 and lifted, and the work scaffolding 2 is placed on a truck bed or the like for transporting the suspended folding scaffolding 1. Then, when the transfer part 4 is lowered as it is, the elevating part 3 is rotated with respect to the work scaffold 2 and the transfer part 4, and the elevating part 3 is bent at the connecting part 9, and the state shown in FIG. It can be folded into the state shown in FIG. As described above, the elevating unit 3 according to the suspended folding scaffold 1 of the present embodiment is configured to be foldable, so that it is possible to reduce the size at the time of transport, and transport on a relatively small truck is also possible. Therefore, even when the road to the work site is narrow like a bridge in a mountainous area or the like, the suspended folding scaffolding 1 of the present embodiment can be transported and installed.

以上、本発明の懸垂式折りたたみ足場の一実施形態について詳述したが、本発明の懸垂式折りたたみ足場は上記の実施形態に限定されるものではない。例えば、上記の実施形態に係る懸垂式折りたたみ足場1においては、昇降部3を構成する複数の昇降部枠体6(昇降部枠体7、8)の上下方向に沿って複数の梯子部材10が配設され、これら複数の梯子部材10がピンP5、P6によるピン接合によって連結されているため、昇降部3を折りたたみ可能に構成した状態で作業員の昇降用梯子を配設することができ、懸垂式折りたたみ足場1の設置作業効率の向上及び作業員の昇降時の安全性向上が図られる。   As mentioned above, although one embodiment of the suspension type folding scaffold of this invention was explained in full detail, the suspension type folding scaffold of this invention is not limited to said embodiment. For example, in the suspended folding scaffolding 1 according to the above-described embodiment, a plurality of ladder members 10 are provided along the vertical direction of the plurality of lifting unit frames 6 (the lifting unit frames 7 and 8) constituting the lifting unit 3. Since the plurality of ladder members 10 are connected by pin joining with the pins P5 and P6, the raising and lowering ladder for the worker can be arranged in a state where the raising and lowering unit 3 is foldable. The installation work efficiency of the suspension type folding scaffold 1 can be improved, and the safety of the worker when raising and lowering can be improved.

しかし、昇降部3を構成する複数の昇降部枠体6には必ずしも複数の梯子部材10が配設されなくてもよく、本発明の懸垂式折りたたみ足場を橋脚Aに設置後、昇降部内に梯子を別途設置することによって作業員は昇降部を昇降可能となり、本発明の懸垂式折りたたみ足場の構成をより簡素化することができると共に、懸垂式折りたたみ足場の軽量化も図られる。   However, a plurality of ladder members 10 do not necessarily have to be disposed on the plurality of lift unit frames 6 constituting the lift unit 3, and after the suspended folding scaffolding of the present invention is installed on the pier A, the ladder is placed in the lift unit. By separately installing, the worker can move up and down the lifting unit, the configuration of the suspended folding scaffold of the present invention can be further simplified, and the weight of the suspended folding scaffold can be reduced.

また、図1に示すように、本実施形態の懸垂式折りたたみ足場1を展開後、或いは橋梁Aへの懸垂式折りたたみ足場1の設置後、作業足場2と昇降部3との連結部、昇降部3と渡り部4との連結部において、各連結部における連結状態をより強固にして安全性の更なる向上を図るべく、ピンP11、P12、P13、P14によってピン接合されることがより好ましい。   In addition, as shown in FIG. 1, after the suspended folding scaffolding 1 of the present embodiment is deployed or after the suspended folding scaffolding 1 is installed on the bridge A, the connecting part between the work scaffold 2 and the lifting part 3, the lifting part In the connecting portion between the connecting portion 3 and the crossover portion 4, it is more preferable that pins are joined by pins P <b> 11, P <b> 12, P <b> 13, P <b> 14 in order to further strengthen the connecting state in each connecting portion and further improve the safety.

更に、本発明の懸垂式折りたたみ足場において、昇降部には複数の柵部材を備えることが、作業員が昇降部を昇降移動する際の安全性の更なる向上が図られるため特に好ましい。具体的には、図1及び図2に示す本実施形態の懸垂式折りたたみ足場1において、昇降部3の上下方向に沿って複数の柵部材13が配設されている。柵部材13は、昇降部3を構成する昇降部枠体7及び昇降部枠体8にピン接合されている。この柵部材13は、懸垂式折りたたみ足場1に係る昇降部3の展開後に設置されてもよいが、図5に示すような昇降部3の展開途中で設置することが、作業効率及び安全性の観点からより好ましい。   Furthermore, in the suspended folding scaffold according to the present invention, it is particularly preferable that the elevating unit is provided with a plurality of fence members because safety can be further improved when an operator moves up and down the elevating unit. Specifically, in the suspended folding scaffolding 1 of the present embodiment shown in FIGS. 1 and 2, a plurality of fence members 13 are arranged along the vertical direction of the elevating unit 3. The fence member 13 is pin-bonded to the elevating part frame 7 and the elevating part frame 8 that constitute the elevating part 3. The fence member 13 may be installed after the lifting / lowering unit 3 according to the suspended folding scaffolding 1 is deployed. However, installation of the lifting / lowering unit 3 as shown in FIG. More preferable from the viewpoint.

また、本発明の懸垂式折りたたみ足場の他の実施形態を図6及び図7に示す。これらの図に示した本実施形態に係る懸垂式折りたたみ足場1aは、基本的な構成は上記の実施形態に係る懸垂式折りたたみ足場と同様であって、作業足場2と、昇降部3と、渡り部4と、支持部5とを含んで構成され、それぞれがピン接合によって連結されている。   Moreover, other embodiment of the suspension type folding scaffold of this invention is shown in FIG.6 and FIG.7. The suspended folding scaffolding 1a according to the present embodiment shown in these drawings has the same basic configuration as the suspended folding scaffolding according to the above-described embodiment, and includes a work scaffold 2, an elevating unit 3, and a crossover. It comprises the part 4 and the support part 5, and each is connected by pin joining.

また、昇降部3は、上側の昇降部枠体7(=一の昇降部枠体6)と下側の昇降部枠体8(=他の昇降部枠体6)との二分割で構成されると共に、これら上側の昇降部枠体7と下側の昇降部枠体8との連結部9、及び昇降部枠体7、8に配設される複数の梯子部材10もピン接合によって連結されている。   Moreover, the raising / lowering part 3 is comprised by the two division | segmentation of the upper raising / lowering part frame 7 (= one raising / lowering part frame 6) and the lower raising / lowering part frame 8 (= other raising / lowering part frame 6). At the same time, the connecting portion 9 between the upper elevating part frame body 7 and the lower elevating part frame body 8 and the plurality of ladder members 10 disposed on the elevating part frame bodies 7 and 8 are also connected by pin joining. ing.

ここで、本実施形態の懸垂式折りたたみ足場1aでは、昇降部3の中間部近傍3c(本実施形態では上側の昇降部枠体7(=一の昇降部枠体6)に係る下端7a側)と、渡り部4の後端4b側とがピンP15、P16によるピン接合によって連結されている。   Here, in the suspended folding scaffolding 1a of the present embodiment, the vicinity of the middle part 3c of the lifting unit 3 (in this embodiment, the lower lifting unit 7a side of the upper lifting unit frame 7 (= one lifting unit frame 6)). And the rear end 4b side of the crossover part 4 is connected by pin joining by the pins P15 and P16.

上記の構成を備える本実施形態の懸垂式折りたたみ足場1aによると、この懸垂式折りたたみ足場1aに係る渡り部4を吊り上げて昇降部3を展開した際、図6に示すように、渡り部4と作業足場2間の昇降距離h2を、上記の実施形態に係る懸垂式折りたたみ足場1の昇降距離h1と比較して短くすることができる。つまり、昇降部3と渡り部4との連結箇所を調節することによって、昇降部3の展開時における渡り部4と作業足場2との昇降距離を容易に調節することができる。   According to the suspended folding scaffolding 1a of the present embodiment having the above-described configuration, when the lifting part 3 is lifted by lifting the moving part 4 related to the hanging folding scaffold 1a, as shown in FIG. The raising / lowering distance h2 between the work scaffolds 2 can be shortened compared with the raising / lowering distance h1 of the suspension type folding scaffold 1 which concerns on said embodiment. In other words, by adjusting the connecting portion between the elevating unit 3 and the crossover unit 4, the elevating distance between the crossing unit 4 and the work scaffold 2 when the elevating unit 3 is deployed can be easily adjusted.

なお、図6に示すように、懸垂式折りたたみ足場1aを展開した際、或いは橋梁Aへの懸垂式折りたたみ足場1aの設置後、作業足場2と昇降部3との連結部、昇降部3と渡り部4との連結部において、各連結部における連結状態をより強固にして安全性の更なる向上を図るべく、ピンP11、P12、P17、P18によってピン接合されることがより好ましい。   As shown in FIG. 6, when the suspended folding scaffolding 1a is deployed or after the suspended folding scaffolding 1a is installed on the bridge A, the connection between the work scaffold 2 and the lifting unit 3 and the lifting unit 3 are crossed. In the connecting portion with the portion 4, it is more preferable that pins are joined by pins P11, P12, P17, and P18 in order to further strengthen the connected state in each connecting portion and further improve the safety.

以上の通り、本発明の懸垂式折りたたみ足場によると、全体構成は変更せず、昇降部と渡り部との連結箇所を調節するのみで、渡り部と作業足場間の昇降距離を容易に調節することができる。従って、懸垂式折りたたみ足場の設置現場における昇降距離を事前に把握しておくことによって、懸垂式折りたたみ足場の搬送前に事前に昇降部と渡り部との連結箇所を調節することができる。更に、懸垂式折りたたみ足場の設置現場においては、渡り部を吊り上げて昇降部を展開するのみで容易に懸垂式折りたたみ足場を設置することが可能となり、作業効率が向上し、設置作業時間の大幅な短縮化が図られる。   As described above, according to the suspended folding scaffold according to the present invention, the overall configuration is not changed, and the lifting distance between the crossing part and the work scaffold is easily adjusted only by adjusting the connecting portion between the lifting part and the crossing part. be able to. Therefore, by grasping in advance the lifting distance at the installation site of the suspended folding scaffolding, it is possible to adjust the connecting portion between the lifting part and the transition part in advance before transporting the suspended folding scaffold. Furthermore, at the installation site of the suspended folding scaffolding, it is possible to easily install the suspended folding scaffolding simply by lifting the crossover and deploying the lifting part, improving work efficiency and significantly increasing the installation work time. Shortening is achieved.

以上、本発明の実施形態に係る懸垂式折りたたみ足場について詳述したが、本発明の技術的思想を実質的に限定するものと解してはならない。本発明はその要旨を逸脱しない範囲で、当業者の創意と工夫により、適宜に改良、変更又は追加をしながら実施できる。   As mentioned above, although the suspension type folding scaffold which concerns on embodiment of this invention was explained in full detail, it should not be understood as limiting the technical idea of this invention substantially. The present invention can be carried out without departing from the gist, with appropriate improvements, changes, or additions based on the inventive ideas and ideas of those skilled in the art.

1、1a:懸垂式折りたたみ足場
2:作業足場
3:昇降部
4:渡り部
5:支持部
6、7、8:昇降部枠体
9:連結部
10:梯子部材
11:支持部枠
12:カウンタウェイト
A:橋梁
B:防護柵
DESCRIPTION OF SYMBOLS 1, 1a: Suspension type folding scaffold 2: Working scaffold 3: Lifting part 4: Crossing part 5: Support part 6, 7, 8: Lifting part frame body 9: Connection part 10: Ladder member 11: Support part frame 12: Counter Weight A: Bridge B: Guard fence

Claims (4)

作業足場と、
前記作業足場から上方に向かって延設され、前記作業足場とピン接合により連結される昇降部と、
前記昇降部にピン接合により連結される渡り部と、
前記渡り部の先端側に連結され、前記作業足場、前記昇降部及び前記渡り部を一体に支持する支持部と、
を含んで成り、
前記昇降部が上下方向に分割された複数の昇降部枠体で構成され、
一の前記昇降部枠体と他の前記昇降部枠体との連結部がピン接合によって連結され、
前記作業足場及び前記渡り部に対して前記昇降部が回動すると共に、前記一の昇降部枠体と前記他の昇降部枠体とが連結部において屈曲することによって折りたたみ可能に構成されていることを特徴とする懸垂式折りたたみ足場。
Working scaffold,
An elevating part extending upward from the work scaffold and connected to the work scaffold by pin joining;
A crossover connected to the elevating part by pin bonding;
A support part connected to the distal end side of the crossover part and integrally supporting the work scaffold, the elevating part and the crossover part;
Comprising
The elevating part is composed of a plurality of elevating part frame bodies divided in the vertical direction,
The connecting part of one said raising / lowering part frame and the said other raising / lowering part frame is connected by pin joining,
While the said raising / lowering part rotates with respect to the said work scaffold and the said crossing part, it is comprised so that it can fold by bending one said raising / lowering part frame and said other raising / lowering part frame in a connection part. Suspended folding scaffold characterized by that.
前記支持部がカウンタウェイトを備え、
前記カウンタウェイトがハンプ構造をなすことを特徴とする請求項1に記載の懸垂式折りたたみ足場。
The support portion includes a counterweight;
The suspended folding scaffold according to claim 1, wherein the counterweight has a hump structure.
前記複数の昇降部枠体の上下方向に沿って複数の梯子部材が配設され、
前記複数の梯子部材が前記複数の昇降部枠体にピン接合によって連結されていることを特徴とする請求項1又は請求項2に記載の懸垂式折りたたみ足場。
A plurality of ladder members are disposed along the up-down direction of the plurality of lifting unit frames,
The suspended folding scaffold according to claim 1 or 2, wherein the plurality of ladder members are connected to the plurality of lifting part frame bodies by pin joining.
前記昇降部に複数の柵部材を備えることを特徴とする請求項1から請求項3の何れかに記載の懸垂式折りたたみ足場。   The suspension type folding scaffold according to any one of claims 1 to 3, wherein the elevating part includes a plurality of fence members.
JP2018032489A 2018-02-26 2018-02-26 Suspension type folding scaffold Pending JP2019148097A (en)

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Country Link
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115467229A (en) * 2022-09-09 2022-12-13 保利长大工程有限公司 Bridge guardrail maintenance trolley

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115467229A (en) * 2022-09-09 2022-12-13 保利长大工程有限公司 Bridge guardrail maintenance trolley

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