JP3913648B2 - Work scaffolding device for bridge railing - Google Patents

Work scaffolding device for bridge railing Download PDF

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Publication number
JP3913648B2
JP3913648B2 JP2002261200A JP2002261200A JP3913648B2 JP 3913648 B2 JP3913648 B2 JP 3913648B2 JP 2002261200 A JP2002261200 A JP 2002261200A JP 2002261200 A JP2002261200 A JP 2002261200A JP 3913648 B2 JP3913648 B2 JP 3913648B2
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Japan
Prior art keywords
frame
scaffold
wall surface
scaffolding
breathable sheet
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JP2002261200A
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Japanese (ja)
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JP2004100193A (en
Inventor
良浩 平川
耕司 伊東
繁樹 鎌田
雅紀 杉本
正光 窪田
幸三 岡田
祐司 山本
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Okumura Corp
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Okumura Corp
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  • Movable Scaffolding (AREA)

Description

【0001】
【発明の属する技術分野】
本発明は、高架路線等の橋梁の側壁である高欄部に対して、樹脂液の吹き付け塗装等の補修作業やサンダ等による表面処理作業を行うための作業用足場装置に関するものである。
【0002】
【従来の技術】
従来から、橋梁における高欄部の外側壁面に塗装等の作業を行うには図7、図8に示すような移動足場装置A'を使用して行っている。この移動足場装置A'は、足場用フレーム31の上端内側部に車輪用フレーム部32を一体に設け、この車輪用フレーム部32に高欄部Bの上端面を転動する頂部車輪33と高欄部Bの上端部における内外側壁面を挟むようにして転動する側部車輪34、35を装着して足場用フレームを高欄部Bの外側壁面に沿って移動させるように構成している。そして、足場用フレーム31には上部作業床36と下部作業床37とが備えられてあり、作業員がこれらの作業床36、37上に搭乗して足場装置A'を高欄部Bの外側壁面に沿って移動させながら該高欄部Bの外側壁面や外底面部分に対する塗装作業や表面処理作業を行っている。なお、このような移動足場装置に類似した装置としては、例えば特許文献1等がある。
【0003】
【特許文献1】
特開2001−172920号公報(第2〜3頁、図1)。
【0004】
【発明が解決しようとする課題】
しかしながら、このような移動足場装置A'によれば、足場用フレーム31を構成している隣接するフレーム部間には、外部に連通した大きな開口部が設けられているために、高欄部Bの外側壁面に樹脂液の吹き付け塗装を行ったり、サンダによる表面研削作業を行うと、外側壁面から跳ね返った塗料の粒子や研削された微粉末が足場フレームから四方に飛散して環境を著しく悪化させるという問題点があった。
【0005】
本発明はこのような問題点に鑑みてなされたもので、その目的とするところは、塗料の粒子や研削された微粉末等を外部に飛散させることなく、高欄部の外側壁面に対して塗装作業や表面処理作業を行えるようにした橋梁高欄部の作業用足場装置を提供するにある。
【0006】
【課題を解決するための手段】
上記目的を達成するために、本発明の橋梁高欄部の作業用足場装置は、請求項1に記載したように、内部を作業用空間部に形成している足場フレームに作業床を敷設していると共にこの足場フレームの上端部を橋梁の高欄部の上端部に複数個の車輪を介して支持させて該足場用フレームの内側面を高欄部の外側壁面に対向させた状態で高欄部の外側壁面に沿って移動可能に配設している作業用足場装置であって、上記足場フレームは、前後方向に長い平面長方形状の底枠部の内外側端部上に上下方向の長さが上記高欄部の高さよりも長い縦長矩形枠状の内外フレーム部を互いに平行に対向させた状態で立設すると共にこれらの内外フレーム部の上端部間に上記底枠部と同大、同形の天枠部を一体に固着してなり、この足場フレームにおける上記内外フレーム部を形成している垂直枠部上に断面L字状のシート取付用フレーム材を固着して高欄部の外側壁面に対面している足場フレームの内側面以外の前後面と外側面とに、隣接するシート取付用フレーム材間に非通気性シートを取り外し可能に挿入、固定することにより該非通気性シートを張設していると共に上記底枠部と天枠部にも非通気性シートを全面的に張設してあり、さらに、高欄部と対面して開口している足場フレームの上記内側面の外周縁部に高欄部の外側壁面に当接させる弾性シール材を装着していると共に、足場フレームに非通気性シートを貫通して足場フレームの内外に連通するフィルター付換気装置を付設してなる構造としている。
【0007】
【作用】
橋梁の高欄部に車輪を介して吊支状態に支持されている足場フレームの作業用空間部内に作業員が搭乗し、足場フレームを橋梁の長さ方向に移動させながらこの足場フレームが対面している高欄部の外側壁面に樹脂液の吹き付け塗装を行ったり、或いは、外側壁面に対するサンダによる表面研削作業を行う。これらの作業中において、吹き付けた塗料の粒子が跳ね返ったり、研削された外側壁面の微粉末が足場フレーム内からフレーム部間を通じて外部に飛散しようとするが、高欄部の外側壁面に対面している内側面以外の足場フレームの外面に、非通気性シートを張設しているので、塗料の粒子や外側壁面の研削された微粉末はこの非通気性シートによって外部に飛散、落下するのを阻止される。
【0008】
足場用フレームの外面に対する非通気性シートの張設は、足場用フレームの隣接するフレーム部上にシート取付用フレーム材を固定しておき、このシート取付け用フレーム材間に配設することにより容易に行うことができ、また、その取外しも簡単に行うことができる。さらに、高欄部の外側壁面と対面している足場用フレームの内側面の開口外周縁部にシール材を装着しておき、このシール材を高欄部の外側壁面に当接させることによって、足場用フレーム内の気密性を保持し得ると共に該高欄部の外側壁面と足場用フレームとの間の隙間からの吹き付け塗料や研削により生じた微粉末が外部に飛散するのを確実に防止できる。
【0009】
また、足場フレームに、上記非通気性シートを貫通して足場フレームの内外に連通するフィルター付換気装置を付設しておけば、高欄部の外側壁面を塗装した時の跳ね返った塗料粒子や研削の際に発生した微粒子をこの換気装置のフィルターによって捕捉させながら足場用フレーム内の空気を換気することができ、足場用フレーム内の作業用空間部を良好にして作業性を向上させることができる。
【0010】
【発明の実施の形態】
次に、本発明の具体的な実施の形態を図面について説明する。図1〜図3において、移動足場装置Aは、橋梁の側壁である高欄部Bの上端面上を転動する複数個の頂部車輪5と該高欄部Bの内外壁面B1、B2に当接してこれらの内外壁面B1、B2を挟持しながら転動する内外側部車輪6、7とを高欄部Bの長さ方向に所定間隔毎に取付けている支持フレーム1と、この支持フレーム1にその上端内側部を一体に連結、固着して支持フレーム1の外側面から高欄部Bの外側壁面B1に沿って垂設している足場用フレーム2と、該足場用フレーム2における高欄部Bの外側壁面B1と対面している内側面以外の面、即ち、前後両側面と外側面及び上下端面に張設している塩ビシート等の非通気性シート3と、前後両側面に張設している非通気性シート3、3を貫通して足場用フレーム2の内外に連通させた状態にして該足場用フレーム2に装着されているフィルター付換気装置4と、高欄部Bと対面して開口している足場フレーム1の上記内側面の四方外周縁部に装着されて高欄部の外側壁面に密接状態で当接させる一定厚みを有する帯状の弾性シール材8とから構成されている。
【0011】
この移動足場装置Aの構造をさらに詳しく説明すると、上記支持フレーム1は一定長さを有する側面横長長方形状の角棒材からなる内外水平枠部材1a、1bを高欄部Bの厚みよりも小なる間隔を存して平行に対設し、これらの内外水平枠部材1a、1bの前後両端部間を図4に示すように、連結部材1cによって一体に連結して高欄部Bの長さ方向に長い平面長方形状に形成してあり、この内外水平枠部材1a、1b間に上記頂部車輪5、5・・を長さ方向、即ち、前後方向に一定間隔毎に回転自在に軸支している。なお、これらの頂部車輪5のうち、1個の頂部車輪5を支持フレーム1に取付けている駆動モータ(図示せず)により回転させるように構成していると共にこの駆動モータを遠隔操作によって作動させるように構成している。
【0012】
また、内外の側部車輪6、7は、水平フレーム部9aに下方に向かって一定長さの垂直フレーム部9bを一体に設けてなる逆L字状の車輪フレーム9における上記垂直フレーム部9bの下端部にそれぞれ回転自在に軸支されてあり、これらの側部車輪6、7を有する車輪フレーム9を3本以上、上記支持フレーム1の上面における前後及び中間部にその長さ方向をこの支持フレーム1と直角方向に向けて溶接等により一体に固着している角筒部材10にそれぞれ取外し(抜き取り)可能に挿入して、ボルト・ナットにより固定されている。なお、外側の側部車輪7は支持フレーム1或いは足場用フレーム2に一体に固着しておき、内側の側部車輪6を有する車輪フレーム9のみを上記角筒部材10に着脱自在に装着しておいてもよい。
【0013】
一方、上記足場用フレーム2は、前後方向に長い一定幅と長さを有する平面長方形状の底枠部2Aの内外側端部上に上下方向の長さが高欄部Bの高さよりも長く且つ高欄部Bに沿った前後方向の幅が底枠部2Aの長さに等しい幅に形成している縦長矩形枠状の内外フレーム部2B、2Cを互いに平行に対向させた状態で立設していると共に、これらの内外フレーム部2B、2Cの上端部間に上記底枠部2Aと同大、同形の天枠部2Dを一体に固着して内部に作業用空間部11を有する箱形状に形成していると共に上下方向の長さの中央部と上記底枠部2Aとに作業床12、13を敷設している。なお、この足場用フレーム2には内外フレーム部2B、2Cの前後両端間で形成している前後面21、22やこれらの内外フレーム部2B、2Cによって形成している内外側面23、24には手摺りや安全性を高めるための複数本の補強兼用桟部材14を取付けている。
【0014】
この足場用フレーム2における内側面以外の面、即ち、上記前後両面21、22と外側面24、及び上下端面には、上記非通気性シート3が張設されている。この非通気性シート3の取付構造は、図に示すように前後両側面21、22においては、足場用フレーム2の内外フレーム部2B、2Cを形成している前端側の垂直枠部2b1 、2c1 上に断面L字状のシート取付用フレーム材15を固着して、これらのフレーム材15、15の断面L字状溝内に比較的厚みのある塩ビシートからなる非通気性シート3の両端縁部を挿入、固定することによって張設され、外側面24においても同様に、この外側面24を形成している外側フレーム部2Cの上記前後垂直枠部2c1 、2c2 とこれらの前後垂直枠部2c1 、2c2 間の中間垂直枠部2c3 とに断面L字状のシート取付用フレーム材15を固着して、隣接するフレーム材15、15の断面L字状溝内に上記塩ビシートからなる非通気性シート3の両端縁部を挿入、固定することによって張設されている。
【0015】
なお、足場用フレーム2の床枠部2Aにも、同様にして非通気性シート3を全面的に張設されているが、作業床13によって床枠部2Aが隙間なく密閉されている場合には必ずしも張設しておく必要はない。また、足場用フレーム2の天枠部2Dには作業員の出入口等が設けられているが、この出入口に開閉扉を設けている場合にはこの開閉扉を含め、該天枠部2Dの全面に非通気性シート3を張設している。さらに、図1に示すように、足場用フレーム2の下部内側面に高欄部Bの外底面下方に向かって補助足場台2'を突設している場合には、この補助足場台2'の外底面の前後両面と内側面に上記同様にシート取付用フレーム材15を張設していると共に、開口した上端面における前後両端縁部と内側端縁部とに、外端を足場用フレーム2の内側面における前後両端縁に縦方向に取付けている弾性シール材8の下端に連設させている弾性シール材8'を装着している。
【0016】
足場用フレーム2には、作業用空間部11内の換気を行うために、前後両面21、22の中央部に非通気性シート3を貫通して作業用空間部11の内外に連通したフィルター付換気装置4、4を配設している。この換気装置4は、図6に示すように、円筒状本体4aの開口端にフィルター4bを取り替え可能に装着していると共に内部にモータ4dによって回転する換気ファン4cが回転自在に支持されてあり、このフィルタ付換気装置4、4を足場用フレーム2の枠部に取付けて作業用空間部11内の換気を行うように構成している。
【0017】
なお、足場用フレーム2の天枠部2D上の端縁部には柵16が立設されていると共に、上記支持フレーム1の内側端部には高欄部Bの内側面側から作業員が足場用フレーム2に対して昇降可能な階段よりなる昇降設備17が装着されている。
【0018】
以上のように構成した移動足場装置Aによって、例えば、橋梁の高欄部Bの外側壁面B1に塗装作業を行うには、足場用フレーム2を高欄部Bの外側壁面B1に沿わせ、支持フレーム1に配している頂部車輪5を高欄部Bの上端面に載せると共に内外の側部車輪6、7を高欄部Bの上端部内外側壁面B1、B2に挟むようにして当接させて、足場用フレーム2を高欄部Bの外側壁面B1に沿って安定した状態で前後方向に走行できるように足場用フレーム2を吊支すると共に、足場用フレーム2の内側面の前後端縁部に装着している弾性シール材8、8を高欄部Bの外側壁面B1に前後に間隔を存して密着させ、さらに、補助足場台2'の上端周縁部に装着している弾性シール材8'を高欄部Bの外底面に密着させた状態にする。
【0019】
この状態にして足場用フレーム2の上下作業床12、13上の作業用空間部11内に作業員が搭乗し、上側作業床11上の足場用フレーム2内の上側作業室を通じて該作業室に対面した高欄部Bの外側壁面B1の上半部に対する樹脂液等の吹き付けによる塗装作業を行うと共に下側作業床12上の足場用フレーム2内の下側作業室を通じて該作業室に対面した高欄部Bの外側壁面B1の下半部に対して塗装作業を行う。さらに、足場用フレーム2の下端部から高欄部Bの底面下方に向かって張り出してい補助足場台2'から高欄部Bの外底面に対する塗装作業を行う。
【0020】
この塗装作業時に、高欄部Bの外側壁面B1や外底面に吹き付けた材料(塗料)の一部は、外側壁面B1や外底面から足場用フレーム2側に跳ね返るが、足場用フレーム2は、高欄部Bの外側壁面B1や外底面に対面している作業用開口部を有する内側面において、その周縁部に装着している弾性シール材8、8'を高欄部Bの外側壁面B1と外底面に密着させているから、これらの弾性シール材8、8'によって上記跳ね返った塗料の粒子が高欄部Bと足場用フレーム2との間から外部に飛散するのを防止しながら全ての塗料の跳ね返り粒子を足場用フレーム2の作業用空間部11内に受け入れる。
【0021】
足場用フレーム2の作業用空間部11は、高欄部Bの外側壁面B1と対面している足場用フレーム2の開口内側面以外の面が非通気性シート3によって密閉されているので、足場用フレーム2内から外部に飛散することなく足場用フレーム2の作業用空間部11内で浮遊した状態となり、この浮遊粒子は作業用空間部11内を換気しているフィルター付換気装置4の作動によって該換気装置4に配設しているフィルター4bにより捕捉され、外部に排出されることなく作業用空間部11内の空気のみが換気されるものである。なお、作業員は、塗料の吹付け作業時に防塵マスクを装着して作業を行うものである。
【0022】
高欄部Bの外側壁面B1に対して吹き付け塗装する材料としては、ウレタン樹脂、ウレア樹脂、ウレアウレタン樹脂等の樹脂塗料以外に、コンクリート、モルタル、ポリマーセメント系材料、或いはこれらの材料に各種短繊維を混入させてなる材料が使用される。また、このような吹き付けによる塗布作業以外に、高欄部Bの外側壁面B1にサンダ等による表面研削処理を施す時においても、上記作業用足場装置Aを使用して作業を行い、研削によって生じたコンクリート等の微粉末の足場用フレーム外への飛散を防止すると共に換気装置4のフィルター4bによって微粒子を捕捉しながら、作業用空間部11内の換気を行うものである。
【0023】
足場用フレーム2が対面している高欄部Bの外側壁面B1部分に対する塗装等の作業が終わると、作業員が遠隔操作によって駆動モータを作動させて頂部車輪5を回転させ、足場装置Aを高欄部Bの外側壁面B1に沿って次の塗装位置まで水平方向に前進させ、先に塗装した部分に連続した塗装作業等を行う。なお、足場装置Aを停止させることなく、作業員の作業能率に応じた速度でもって連続的に前進移動させながら塗装作業等を行ってもよい。
【0024】
この塗装作業中に、足場装置Aが高欄部Bの内側壁面B2に沿って配設している電源ボックスや鉄柱等の障害物(図示せず)に達すると、内側の側部車輪6がこの障害物に付き合ったそれ以上、前進移動させることができないために、足場装置Aを一旦停止させ、障害物に対向した先行する前端側の側部車輪6を装着している車輪フレーム9を取り外したのち、頂部車輪5と残りの内側の側部車輪6、6と共に外側の側部車輪7、7とで足場用フレーム2を安定的に支持させながら足場装置Aを前進移動させて、上記障害物を撤去した前端側の車輪フレーム9と次の中間部側の車輪フレーム9との間に位置させる。
【0025】
この状態にして再び足場装置Aを停止させ、上記前端側の側部車輪6を装着している車輪フレーム9を元の位置に取付けたのち、上記中間部側の側部車輪6を装着している車輪フレーム9を取外し、しかるのち、再び、足場装置Aを前進移動させることによって、上記障害物を撤去した中間部側の車輪フレーム9から後方に通過させる。
【0026】
以下、同様にして、障害物と対向する側部車輪6を装着した車輪フレーム9を取外し、障害物の通過後、取付けることによって障害物を足場装置Aの後端から後方に通過させながら、高欄部Bの外側壁面B1に対する塗装作業等を行うものである。
【0027】
【発明の効果】
以上のように本発明の橋梁高欄部の作業用足場装置によれば、請求項1に記載したように、内部を作業用空間部に形成している足場フレームに作業床を敷設していると共にこの足場フレームの上端部を橋梁の高欄部の上端部に複数個の車輪を介して支持させ、高欄部の外側壁面に沿って移動可能に配設している作業用足場装置であって、上記足場フレームを形成しているフレーム部間に、高欄部の外側壁面に対面している内側面の開口部を残して非通気性シートを張設しているので、足場フレームの作業用空間部内に作業員が搭乗して足場フレームを橋梁の長さ方向に移動させながらこの足場フレームが対面している高欄部の外側壁面に樹脂液の吹き付け塗装を行ったり、或いは、外側壁面に対するサンダによる表面研削作業を円滑に行うことができると共に、外側壁面に吹き付けた塗料の粒子が跳ね返ったり、研削された外側壁面の微粉末が飛散しようとしても、高欄部の外側壁面に対面している内側面以外の足場フレームの外面を、非通気性シートで被覆しているから、塗料の粒子や外側壁面の研削された微粉末をこの非通気性シートによって外部に飛散、落下するのを確実に防止することができ、環境を悪化させることなく、塗布作業等を行うことができる。
【0028】
さらに、上記非通気性シートを足場フレームにおける隣接するフレーム部上に固定したシート取付用フレーム材間に取り外し可能に挿入、固定することにより張設しているので、非通気性シートを足場用フレームの外部からシート取付用フレーム材を利用して簡単に装着することができると共にその取外しや交換も容易に行えるものであり、その上、高欄部の外側壁面に対面して開口している足場フレームの内側面の外周縁部に、高欄部の外側壁面に当接する弾性シール材を装着しているので、この弾性シール材によって、該高欄部の外側壁面と足場用フレームとの間の隙間からの吹き付け塗料や研削により生じた微粉末が外部に飛散するのを確実に防止できると共にこれらの塗料粒子、或いは微粉末を足場用フレーム内に確実に受け入れさせることができ、この足場用フレームも弾性シール材と共に上記非通気性シートによって気密性が保持されているから、足場用フレーム外に飛散、流出するのを確実に防止することができる。
【0029】
また、本発明によれば、足場フレームに、上記非通気性シートを貫通して足場フレームの内外に連通するフィルター付換気装置を付設しているので、高欄部の外側壁面を塗装した時の跳ね返った塗料粒子や研削の際に発生した微粒子をこの換気装置のフィルターによって捕捉させながら足場用フレーム内の空気を換気することができ、足場用フレーム内の作業用空間部を良好にして作業性を向上させることができる。
【図面の簡単な説明】
【図1】 移動足場装置の簡略正面図、
【図2】 その簡略側面図、
【図3】 簡略平面図、
【図4】 車輪フレームの拡大正面図、
【図5】 非通気性シートの装着構造を示す一部の拡大横断面図、
【図6】 換気装置の縦断側面図、
【図7】 従来例を示す簡略正面図、
【図8】 その簡略側面図。
【符号の説明】
A 移動足場装置
B 高欄部
B1 外側壁面
1 支持フレーム
2 足場用フレーム
3 非通気性シート
4 フィルター付換気装置
8 弾性シール材
9 車輪フレーム
11 作業用空間部
15 シート取付用フレーム材
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a work scaffolding device for performing repair work such as spray coating of a resin liquid or surface treatment work using sander or the like on a handrail which is a side wall of a bridge such as an elevated line.
[0002]
[Prior art]
Conventionally, in order to perform an operation such as painting on the outer wall surface of the rail of the bridge, a moving scaffold device A ′ as shown in FIGS. 7 and 8 is used. This moving scaffold device A ′ is provided with a wheel frame part 32 integrally on the inner side of the upper end of the scaffolding frame 31, and the top wheel 33 and the railing part rolling the upper end surface of the handrail B on the wheel frame part 32. The side wheels 34 and 35 that roll so as to sandwich the inner and outer wall surfaces at the upper end of B are mounted, and the scaffolding frame is configured to move along the outer wall surface of the balustrade B. The scaffold frame 31 is provided with an upper work floor 36 and a lower work floor 37, and an operator gets on the work floors 36, 37 to place the scaffold device A ′ on the outer wall surface of the rail section B. The coating work and the surface treatment work are performed on the outer wall surface and the outer bottom surface portion of the rail section B. In addition, as an apparatus similar to such a moving scaffold apparatus, there exists patent document 1 etc., for example.
[0003]
[Patent Document 1]
JP 2001-172920 A (pages 2 to 3, FIG. 1).
[0004]
[Problems to be solved by the invention]
However, according to such a moving scaffold device A ′, a large opening communicating with the outside is provided between adjacent frame portions constituting the scaffold frame 31, so When spraying resin liquid on the outer wall surface or performing surface grinding with sander, paint particles bounced off the outer wall surface and ground fine powder are scattered from the scaffold frame in all directions, which significantly deteriorates the environment. There was a problem.
[0005]
The present invention has been made in view of such problems, and the object of the present invention is to coat the outer wall surface of the balustrade without splashing paint particles or ground fine powder to the outside. An object of the present invention is to provide a work scaffolding device for a bridge rail that allows work and surface treatment work.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, the work platform device for a bridge rail of the present invention has a work floor laid on a work frame that forms the work space as described in claim 1. In addition, the upper end of the scaffold frame is supported by the upper end of the rail of the bridge via a plurality of wheels, and the outer surface of the scaffold is opposed to the outer wall of the rail. A working scaffold device disposed movably along a wall surface, wherein the scaffold frame has a vertical length on the inner and outer ends of a bottom rectangular frame portion that is long in the front-rear direction. A vertically-long rectangular frame-shaped inner and outer frame portions that are longer than the height of the handrail portion are erected in a state of facing each other in parallel, and between the upper end portions of these inner and outer frame portions, the top frame of the same size and shape as the bottom frame portion. The upper part of this scaffolding frame A front and rear surface other than the inner surface of the scaffolding frame, which is secured to the L-shaped sheet mounting frame member on the vertical frame portion forming the inner and outer frame portions and faces the outer wall surface of the balustrade portion, and the outer surface In addition, the non-breathable sheet is stretched by removably inserting and fixing the non-breathable sheet between adjacent seat mounting frame members, and the bottom frame portion and the top frame portion are also non-breathable sheet Is attached to the outer peripheral edge of the inner side surface of the scaffold frame that faces and faces the handrail part, and an elastic seal material that makes contact with the outer wall surface of the handrail part is attached. In addition, a ventilation device with a filter that passes through the non-breathable sheet and communicates with the inside and outside of the scaffold frame is attached to the scaffold frame .
[0007]
[Action]
Workers board the working space of the scaffold frame supported in a suspended state via wheels on the rails of the bridge, and this scaffold frame faces while moving the scaffold frame in the length direction of the bridge. A resin liquid is sprayed onto the outer wall surface of the rail, or surface grinding is performed on the outer wall surface with a sander. During these operations, the sprayed paint particles bounce off or the ground fine powder on the outer wall surface scatters from the inside of the scaffold frame to the outside through the frame part, but faces the outer wall surface of the railing part. Since the non-breathable sheet is stretched on the outer surface of the scaffolding frame other than the inner surface, paint particles and ground fine powder on the outer wall surface are prevented from scattering and falling outside by this non-breathable sheet. Is done.
[0008]
The non-breathable sheet can be easily stretched on the outer surface of the scaffolding frame by fixing the seating frame material on the adjacent frame part of the scaffolding frame and disposing it between the seating frame materials. And can be easily removed. Furthermore, by attaching a sealing material to the outer peripheral edge of the opening on the inner side surface of the scaffolding frame facing the outer wall surface of the balustrade, and bringing the sealing material into contact with the outer wall surface of the balustrade, The airtightness in the frame can be maintained, and the sprayed paint from the gap between the outer wall surface of the handrail and the scaffolding frame and the fine powder generated by grinding can be reliably prevented from scattering to the outside.
[0009]
In addition, if a ventilation device with a filter that penetrates the non-breathable sheet and communicates with the inside and outside of the scaffold frame is attached to the scaffold frame, the paint particles that bounce off when the outer wall surface of the railing is painted, It is possible to ventilate the air in the scaffolding frame while capturing the fine particles generated by the filter of the ventilation device, and to improve the workability by improving the working space in the scaffolding frame.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Next, specific embodiments of the present invention will be described with reference to the drawings. 1 to 3, the mobile scaffold device A is in contact with a plurality of top wheels 5 that roll on the upper end surface of the rail B that is a side wall of the bridge, and inner and outer wall surfaces B1 and B2 of the rail B. A support frame 1 in which inner and outer wheels 6 and 7 that roll while sandwiching the inner and outer wall surfaces B1 and B2 are attached at predetermined intervals in the length direction of the rail section B, and an upper end of the support frame 1 Scaffolding frame 2 that hangs from the outer surface of support frame 1 along outer wall surface B1 of railing B by connecting and fixing the inner part integrally, and the outer wall surface of railing B in scaffolding frame 2 Non-breathable sheet 3 such as a vinyl chloride sheet stretched on the surfaces other than the inner side facing B1, that is, both the front and rear side surfaces, the outer side surface, and the upper and lower end surfaces; The foot is formed in a state where it passes through the breathable sheets 3 and 3 and communicates with the inside and outside of the scaffolding frame 2. The ventilation device with filter 4 mounted on the frame 2 and the scaffold frame 1 that opens facing the rail B and is attached to the outer peripheral edge of the four sides of the inner surface and in close contact with the outer wall of the rail And a belt-like elastic sealing material 8 having a certain thickness to be brought into contact with.
[0011]
The structure of the moving scaffold device A will be described in more detail. The support frame 1 has inner and outer horizontal frame members 1a, 1b made of rectangular bars having a laterally long side shape having a certain length, which are smaller than the thickness of the rail B. The front and rear end portions of the inner and outer horizontal frame members 1a and 1b are connected together in parallel by a connecting member 1c as shown in FIG. It is formed in a long planar rectangular shape, and the top wheels 5, 5,... Are supported between the inner and outer horizontal frame members 1a, 1b so as to be rotatable at regular intervals in the length direction, that is, the front-rear direction. . Of these top wheels 5, one top wheel 5 is configured to be rotated by a drive motor (not shown) attached to the support frame 1 and this drive motor is operated by remote control. It is configured as follows.
[0012]
Further, the inner and outer side wheels 6 and 7 have the vertical frame portion 9b in an inverted L-shaped wheel frame 9 in which a vertical frame portion 9b having a fixed length is integrally provided downward on the horizontal frame portion 9a. Three or more wheel frames 9 having these side wheels 6 and 7 are rotatably supported at the lower end portions, and the length direction is supported at the front and rear and middle portions of the upper surface of the support frame 1. Removably inserted into the rectangular tube member 10 that is integrally fixed to the frame 1 by welding or the like in a direction perpendicular to the frame 1 and fixed by bolts and nuts. The outer side wheel 7 is fixed to the support frame 1 or the scaffolding frame 2 integrally, and only the wheel frame 9 having the inner side wheel 6 is detachably attached to the square tube member 10. It may be left.
[0013]
On the other hand, the scaffolding frame 2 has a vertical length longer than the height of the column B on the inner and outer ends of the bottom rectangular frame 2A having a constant width and length long in the front-rear direction. The vertically long rectangular frame-shaped inner and outer frame portions 2B and 2C formed so that the width in the front-rear direction along the rail B is equal to the length of the bottom frame portion 2A are erected in a state of facing each other in parallel. In addition, a top frame 2D having the same size and shape as the bottom frame 2A is integrally fixed between the upper ends of the inner and outer frame portions 2B and 2C to form a box shape having a working space 11 inside. In addition, work floors 12 and 13 are laid on the central portion of the vertical length and the bottom frame portion 2A. The scaffold frame 2 includes front and rear surfaces 21 and 22 formed between the front and rear ends of the inner and outer frame portions 2B and 2C, and inner and outer surfaces 23 and 24 formed by these inner and outer frame portions 2B and 2C. A plurality of reinforcing and crosspiece members 14 for improving handrails and safety are attached.
[0014]
The non-breathable sheet 3 is stretched on the surface other than the inner side surface of the scaffold frame 2, that is, the front and rear surfaces 21, 22 and the outer surface 24, and the upper and lower end surfaces. As shown in FIG. 5 , the front and rear side surfaces 21 and 22 are attached to the non-breathable sheet 3 with a vertical frame portion 2b1 on the front end side forming the inner and outer frame portions 2B and 2C of the scaffolding frame 2, 2c1 A sheet mounting frame member 15 having an L-shaped cross section is fixed on both ends of a non-breathable sheet 3 made of a PVC sheet having a relatively large thickness in the L-shaped groove of the frame members 15 and 15. The front and rear vertical frame portions 2c1 and 2c2 of the outer frame portion 2C forming the outer side surface 24 and the front and rear vertical frame portions are similarly stretched by inserting and fixing the edge portion. A non-ventilated sheet made of the above-mentioned PVC sheet is fixed to an intermediate vertical frame portion 2c3 between 2c1 and 2c2 by attaching an L-shaped sheet mounting frame material 15 to the adjacent L-shaped grooves of the frame materials 15 and 15. The stretchable sheet 3 is stretched by inserting and fixing both end edges.
[0015]
Similarly, the non-breathable sheet 3 is stretched over the entire surface of the floor frame portion 2A of the scaffolding frame 2, but the floor frame portion 2A is sealed without gaps by the work floor 13. Does not necessarily have to be stretched. The ceiling frame 2D of the scaffolding frame 2 is provided with a worker entrance and the like. When the door is provided with an opening / closing door, the entire surface of the ceiling frame 2D including the opening / closing door is provided. A non-breathable sheet 3 is stretched on the surface. Furthermore, as shown in FIG. 1, when an auxiliary scaffolding base 2 'is provided on the inner surface of the lower part of the scaffolding frame 2 so as to project downward from the outer bottom surface of the rail B, the auxiliary scaffolding base 2' The seat mounting frame material 15 is stretched on both the front and rear surfaces and the inner surface of the outer bottom surface as described above, and the outer frame is attached to the front and rear edge portions and the inner edge portion of the opened upper end surface. The elastic sealing material 8 'connected with the lower end of the elastic sealing material 8 attached to the longitudinal direction at the front-and-rear both-ends edge in the inner surface is attached.
[0016]
In order to ventilate the work space 11, the scaffolding frame 2 has a filter that penetrates the non-breathable sheet 3 through the center of the front and rear surfaces 21 and 22 and communicates with the inside and outside of the work space 11. Ventilation devices 4 and 4 are provided. As shown in FIG. 6, the ventilation device 4 has a filter 4b that can be replaced at the opening end of a cylindrical body 4a, and a ventilation fan 4c that is rotated by a motor 4d. The ventilation devices 4 and 4 with a filter are attached to the frame portion of the scaffolding frame 2 so as to ventilate the working space portion 11.
[0017]
In addition, a fence 16 is erected on the edge of the ceiling frame 2D of the scaffolding frame 2, and an operator is scaffolded from the inner side of the rail section B on the inner end of the support frame 1. A lifting equipment 17 composed of stairs that can be raised and lowered with respect to the work frame 2 is mounted.
[0018]
For example, in order to perform the painting operation on the outer wall surface B1 of the bridge rail B of the bridge by the moving scaffold device A configured as described above, the scaffold frame 2 is placed along the outer wall surface B1 of the rail rail B, and the support frame 1 The top wheel 5 disposed on the top of the rail B is placed on the upper end surface of the rail B and the inner and outer side wheels 6 and 7 are brought into contact with the inner wall B1 and B2 of the upper end of the rail B so as to be in contact with each other. The suspension frame 2 is suspended so that it can run in the front-rear direction in a stable manner along the outer wall surface B1 of the balustrade B. The sealing materials 8 and 8 are closely attached to the outer wall surface B1 of the handrail B with a space in the front-rear direction, and the elastic sealing material 8 ′ attached to the peripheral edge of the upper end of the auxiliary scaffold base 2 ′ Keep in close contact with the outer bottom.
[0019]
In this state, a worker gets into the work space 11 on the upper and lower work floors 12 and 13 of the scaffolding frame 2 and enters the work room through the upper work room in the scaffolding frame 2 on the upper work floor 11. The balustrade that is applied to the upper half of the outer wall B1 of the facing balustrade B by spraying resin liquid etc. and faces the working chamber through the lower working chamber in the scaffolding frame 2 on the lower working floor 12 The painting work is performed on the lower half of the outer wall B1 of the part B. Further, a coating operation is performed on the outer bottom surface of the rail section B from the auxiliary scaffold base 2 ′, which protrudes from the lower end of the scaffold frame 2 toward the bottom of the bottom section B.
[0020]
Part of the material (paint) sprayed on the outer wall B1 and the outer bottom surface of the rail B during the painting work bounces off the outer wall B1 and outer bottom to the scaffolding frame 2 side. On the inner side surface having the working opening facing the outer wall surface B1 and the outer bottom surface of the part B, the elastic sealing members 8 and 8 'mounted on the peripheral edge thereof are connected to the outer wall surface B1 and the outer bottom surface of the rail section B. The paint particles bounced off by the elastic sealing materials 8 and 8 'are prevented from splashing to the outside from between the rail B and the scaffolding frame 2 so that all of the paint bounces off. The particles are received in the working space 11 of the scaffold frame 2.
[0021]
Since the working space 11 of the scaffolding frame 2 is sealed with a non-breathable sheet 3 on the surface other than the inner surface of the opening of the scaffolding frame 2 facing the outer wall surface B1 of the balustrade B, the scaffolding frame 2 The suspended particles are suspended in the working space 11 of the scaffolding frame 2 without being scattered from the outside of the frame 2, and the suspended particles are caused by the operation of the ventilation device 4 with a filter that ventilates the working space 11. Only the air in the working space 11 is ventilated without being discharged to the outside by being captured by the filter 4b disposed in the ventilation device 4. The worker wears a dust mask during the paint spraying work.
[0022]
In addition to resin paints such as urethane resin, urea resin, urea urethane resin, etc., concrete, mortar, polymer cement-based materials, or various short fibers for these materials can be applied to the outer wall surface B1 of the balustrade B. The material which mixes is used. In addition to the application work by spraying, when the surface grinding process using sander or the like is performed on the outer wall surface B1 of the balustrade B, the work is performed using the working scaffold device A, and is caused by grinding. The inside of the work space 11 is ventilated while preventing fine powder such as concrete from scattering outside the scaffolding frame and capturing the fine particles by the filter 4b of the ventilation device 4.
[0023]
When the work such as painting on the outer wall surface B1 portion of the balustrade B facing the scaffolding frame 2 is finished, the worker operates the drive motor by remote control to rotate the top wheel 5, and the scaffold device A is used as the balustrade. Advancing in the horizontal direction along the outer wall surface B1 of the part B to the next painting position, and performing a painting operation or the like continuous with the previously painted part. In addition, you may perform a painting operation | work etc., without making the scaffold apparatus A stop, moving continuously forward with the speed according to the working efficiency of a worker.
[0024]
During this painting operation, when the scaffold device A reaches an obstacle (not shown) such as a power box or a steel pole arranged along the inner wall surface B2 of the rail B, the inner side wheel 6 Since it cannot move further beyond the obstacle, the scaffold device A is temporarily stopped, and the wheel frame 9 on which the front side wheel 6 on the front end side facing the obstacle is removed is removed. After that, the scaffold device A is moved forward while the scaffold frame 2 is stably supported by the outer side wheels 7 and 7 together with the top wheel 5 and the remaining inner side wheels 6 and 6, and the obstacle Is located between the front end side wheel frame 9 and the next intermediate side wheel frame 9.
[0025]
In this state, the scaffold device A is stopped again, and after attaching the wheel frame 9 on which the side wheel 6 on the front end side is mounted to the original position, the side wheel 6 on the intermediate side is mounted. The wheel frame 9 that has been removed is removed, and then the scaffold device A is moved forward again, so that it passes rearward from the wheel frame 9 on the intermediate side from which the obstacle has been removed.
[0026]
Hereinafter, similarly, the wheel frame 9 with the side wheels 6 facing the obstacle is removed, and after passing through the obstacle, the obstacle is passed rearward from the rear end of the scaffolding device A by being attached. A painting operation or the like is performed on the outer wall surface B1 of the part B.
[0027]
【The invention's effect】
As described above, according to the work scaffold device for the bridge rail of the present invention, as described in claim 1, the work floor is laid on the scaffold frame forming the interior in the work space. A working scaffold device in which the upper end portion of the scaffold frame is supported on the upper end portion of the rail of the bridge via a plurality of wheels, and is disposed so as to be movable along the outer wall surface of the rail. A non-breathable sheet is stretched between the frame portions forming the scaffold frame, leaving an opening on the inner surface facing the outer wall surface of the balustrade, so that the work space of the scaffold frame The operator boarded and moved the scaffold frame in the length direction of the bridge while spraying the resin liquid on the outer wall surface of the railing where this scaffold frame faces, or surface grinding with sander on the outer wall surface Make your work smooth The outer surface of the scaffold frame other than the inner surface facing the outer wall surface of the balustrade, even if the particles of paint sprayed on the outer wall surface bounce off or the fine powder of the ground outer wall surface is scattered, Since it is covered with a non-breathable sheet, paint particles and ground fine powder on the outer wall surface can be reliably prevented from scattering and falling to the outside by this non-breathable sheet, deteriorating the environment. It is possible to perform a coating operation and the like without any problems.
[0028]
Furthermore, the non-breathable sheet to removably between seat mounting frame member fixed on the frame portion adjacent insertion in scaffolding frame, since the stretched by fixing, scaffolding frame impermeable sheet Scaffolding frame that can be easily mounted using the frame material for seat attachment from the outside of the frame, and can be easily removed and replaced, and is opened facing the outer wall surface of the balustrade. Since an elastic sealing material that abuts the outer wall surface of the balustrade portion is attached to the outer peripheral edge of the inner side surface of the inner wall surface, the elastic sealing material causes the clearance from the gap between the outer wall surface of the balustrade portion and the scaffold frame. It is possible to reliably prevent the fine powder generated by spray coating and grinding from scattering to the outside, and to reliably receive these paint particles or fine powder in the scaffolding frame. Rukoto can, this because scaffolding frame also with the elastic sealing member airtightness by said non-permeable sheet is held, scattering outside scaffolding frame, can be reliably prevented from flowing out.
[0029]
Further , according to the present invention, the scaffold frame is provided with a filter ventilation device that penetrates the non-breathable sheet and communicates with the inside and outside of the scaffold frame, so that the rebound when the outer wall surface of the balustrade is painted is added. It is possible to ventilate the air in the scaffolding frame while trapping paint particles and fine particles generated during grinding with the filter of this ventilation device, improving the work space in the scaffolding frame and improving workability Can be improved.
[Brief description of the drawings]
FIG. 1 is a simplified front view of a mobile scaffold device,
FIG. 2 is a simplified side view thereof,
FIG. 3 is a simplified plan view,
FIG. 4 is an enlarged front view of a wheel frame,
FIG. 5 is a partial enlarged cross-sectional view showing a mounting structure of a non-breathable sheet,
FIG. 6 is a longitudinal side view of a ventilation device,
FIG. 7 is a simplified front view showing a conventional example;
FIG. 8 is a simplified side view thereof.
[Explanation of symbols]
A Moving scaffold device B Handrail
B1 Outer wall surface 1 Support frame 2 Scaffolding frame 3 Non-breathable sheet 4 Ventilator with filter 8 Elastic seal material 9 Wheel frame
11 Working space
15 Seat mounting frame material

Claims (1)

内部を作業用空間部に形成している足場フレームに作業床を敷設していると共にこの足場フレームの上端部を橋梁の高欄部の上端部に複数個の車輪を介して支持させて該足場用フレームの内側面を高欄部の外側壁面に対向させた状態で高欄部の外側壁面に沿って移動可能に配設している作業用足場装置であって、上記足場フレームは、前後方向に長い平面長方形状の底枠部の内外側端部上に上下方向の長さが上記高欄部の高さよりも長い縦長矩形枠状の内外フレーム部を互いに平行に対向させた状態で立設すると共にこれらの内外フレーム部の上端部間に上記底枠部と同大、同形の天枠部を一体に固着してなり、この足場フレームにおける上記内外フレーム部を形成している垂直枠部上に断面L字状のシート取付用フレーム材を固着して高欄部の外側壁面に対面している足場フレームの内側面以外の前後面と外側面とに、隣接するシート取付用フレーム材間に非通気性シートを取り外し可能に挿入、固定することにより該非通気性シートを張設していると共に上記底枠部と天枠部にも非通気性シートを全面的に張設してあり、さらに、高欄部と対面して開口している足場フレームの上記内側面の外周縁部に高欄部の外側壁面に当接させる弾性シール材を装着していると共に、足場フレームに非通気性シートを貫通して足場フレームの内外に連通するフィルター付換気装置を付設していることを特徴とする橋梁高欄部の作業用足場装置。The working floor is laid on a scaffolding frame that forms the interior of the working space, and the upper end of the scaffolding frame is supported by the upper end of the rail of the bridge via a plurality of wheels . A working scaffold device arranged to be movable along the outer wall surface of the railing with the inner surface of the frame facing the outer wall surface of the railing , wherein the scaffold frame is a plane that is long in the front-rear direction. On the inner and outer ends of the rectangular bottom frame portion, the vertically long rectangular frame-like inner and outer frame portions whose length in the vertical direction is longer than the height of the high rail portion are erected in parallel with each other, and these A top frame portion of the same size and shape as the bottom frame portion is integrally fixed between the upper end portions of the inner and outer frame portions, and the cross section is L-shaped on the vertical frame portion forming the inner and outer frame portions in the scaffold frame. The frame is fixed by attaching the frame material for mounting the seat. The non-breathable sheet is formed by removably inserting and fixing the non-breathable sheet between adjacent frame mounting frame members on the front and rear surfaces other than the inner surface of the scaffold frame facing the outer wall surface of the scaffold. And a non-breathable sheet is also stretched over the entire bottom frame and top frame, and the inner side of the scaffold frame that is open facing the railing. The outer peripheral edge portion is equipped with an elastic sealing material that makes contact with the outer wall surface of the balustrade portion, and a ventilation device with a filter that passes through the non-breathable sheet and communicates with the inside and outside of the scaffold frame is attached to the scaffold frame . A working scaffolding device for a bridge railing.
JP2002261200A 2002-09-06 2002-09-06 Work scaffolding device for bridge railing Expired - Lifetime JP3913648B2 (en)

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Cited By (1)

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CN103334379A (en) * 2013-06-27 2013-10-02 中铁四局集团第三建设有限公司 Construction method for hanging part of anti-collision guardrail on expressway

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JP4574705B2 (en) * 2008-09-02 2010-11-04 株式会社レジン Suspended scaffolding
JP6431652B2 (en) * 2014-05-29 2018-11-28 株式会社杉孝 Handrail scaffolding equipment
CN107724235B (en) * 2017-11-07 2018-09-18 内蒙古路桥集团有限责任公司 A kind of bridge-collision-avoidance wall Safety operation platform
JP7358818B2 (en) * 2019-07-25 2023-10-11 株式会社大林組 Linear structure construction work system and linear structure construction method
CN111910514B (en) * 2020-05-27 2021-12-10 山西省交通科技研发有限公司 Bridge anti-collision wall protection and repair system and material
CN113529585A (en) * 2021-08-12 2021-10-22 中交一公局西北工程有限公司 Guardrail construction platform and installation method thereof
CN114808706A (en) * 2022-03-10 2022-07-29 浙江交工集团股份有限公司 A integration template platform truck for construction of highway bridge reinforced concrete guardrail

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JPH0324769Y2 (en) * 1985-02-19 1991-05-29
JPH0425485Y2 (en) * 1985-11-12 1992-06-18
US5417301A (en) * 1993-12-27 1995-05-23 Robert J. Wildner Environmentally safe work platform
JP3318549B2 (en) * 1999-12-21 2002-08-26 株式会社ピー・エス Working scaffold for existing bridge
JP3865578B2 (en) * 2000-10-23 2007-01-10 鹿島建設株式会社 Moving scaffold for bridge

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103334379A (en) * 2013-06-27 2013-10-02 中铁四局集团第三建设有限公司 Construction method for hanging part of anti-collision guardrail on expressway
CN103334379B (en) * 2013-06-27 2015-08-05 中铁四局集团第三建设有限公司 A kind of construction method for anti-collision guard rail for highways overhanging portion

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