JPS61191762A - Suspension scaffold construction method and suspension scaffold frame - Google Patents

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【発明の詳細な説明】 産業上の利用分野 この発明は、高架橋等で広く使用する吊り足場工法およ
びその吊り足場枠に関する。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention relates to a suspended scaffold construction method widely used in elevated bridges and the like, and its suspended scaffold frame.

従来技術およびその問題点 主桁形式の橋梁うち、プレートガーダ−若しくはトラス
からなる主桁は定期的にペンキを塗替える等、定期的に
保守点検をおこなう必要がある。Prior art and its problems Among main girder type bridges, main girders made of plate girders or trusses require periodic maintenance inspections such as periodic repainting.

従来、この種の保守点検作業は、橋梁より複数本のチェ
ーンを垂らし、このチェーン間に単管を架設するととも
にこの単管の上に別な単管を直角に架設し、さらにこの
単管の上に足場板を敷設することにより主桁下に作業足
場を構成し、この作業足場の上でおこなっていた。Conventionally, this type of maintenance and inspection work involved hanging multiple chains from a bridge, constructing a single pipe between the chains, and constructing another single pipe at right angles to the single pipe. A work scaffold was constructed below the main girder by laying scaffolding boards on top, and work was carried out on this scaffold.

しかし、このような方法では、突風等で突発的にチェー
ンが切れる等の恐れがあり、構造的に強度上並びに安全
上着しい問題があった。また、高所作業であるためチェ
ーンに単管をさし込む場合トビ職が梁の上に垂り片手作
業するため非常に問題が多く落下事故等の恐れが多く安
全上、著しい問題があった。However, with this method, there is a risk that the chain may suddenly break due to gusts of wind, etc., and there are problems in terms of structural strength and safety. In addition, since the work was carried out at heights, when inserting a single pipe into the chain, the worker had to hang down on the beam and work with one hand, which was very problematic and caused serious safety problems as there was a high risk of falling accidents. .

また、作業足場の設置に際し、多くの足場資材を一つ々
設置する必要があるため多くの手間・ひまを尽やし、足
場構築費や保守費が大幅に嵩むという欠点があった。In addition, when installing a work scaffold, it is necessary to install many scaffolding materials one by one, which consumes a lot of time and effort, and has the disadvantage that scaffold construction and maintenance costs increase significantly.

発明の目的 この発明は、前記従来の問題点を解消するために提案さ
れたもので、所定規模の作業足場を短期間で、しかもき
わめて安全簡単に設置することができ、かつ強度的に勝
れ、きわめて安全に塗装作業等の各種保守作業をおこな
うことができる吊り足場工法およびその吊り足場枠を提
供することを目的とする。Purpose of the Invention The present invention was proposed in order to solve the above-mentioned conventional problems, and it is possible to install a working scaffold of a predetermined scale in a short period of time, extremely safely and easily, and it also has superior strength. The object of the present invention is to provide a suspended scaffold construction method and its suspended scaffold frame that can perform various maintenance works such as painting work in an extremely safe manner.

発明の構成 この発明に係る吊り足場工法は、梁下にその長手方向に
沿って複数の吊り足場枠を相互に連結しつつ吊り下げる
ことによって梁の長手方向に連続する作業足場を構成し
、梁が平行に設置されている場合には各梁下に作業足場
を構成し、必要あるときはさらに左右作業足場間に単管
と足場板とからなる作業足場を構成するものである。Structure of the Invention The suspended scaffolding construction method according to the present invention constitutes a working scaffold that is continuous in the longitudinal direction of the beam by suspending a plurality of suspended scaffolding frames under the beam while interconnecting them along the longitudinal direction of the beam. When the beams are installed in parallel, a work scaffold is constructed under each beam, and when necessary, a work scaffold consisting of a single pipe and a scaffold board is constructed between the left and right work scaffolds.

また、この発明の吊り足場工法に使用する吊り足場枠は
建枠下端部に布枠を起倒自在に連結し、この布枠先端部
と建枠上端部間にプレースをその両端を回転自在に連結
して架設するとともにこのプレースを折曲若しくは伸縮
自在に構成し、かつ前記建枠上端部に吊り下げ機構を、
前記布枠先端部に連結フックをそれぞれ設けることによ
り構成されている。In addition, the hanging scaffolding frame used in the hanging scaffolding method of this invention has a cloth frame connected to the lower end of the building frame so that it can be raised and lowered, and a place is placed between the tip of the cloth frame and the upper end of the building frame so that both ends can be rotated. In addition to connecting and constructing the place, the place is configured to be bendable or expandable, and a hanging mechanism is provided at the upper end of the building frame.
It is constructed by providing connection hooks at the tips of the cloth frames.

実施例 以下、この発明を吊り足場枠から図示する一実施例に基
いて説明する。EXAMPLE Hereinafter, the present invention will be explained based on an example illustrated from a suspended scaffolding frame.

吊り足場枠１は、縦長の長方形枠に構成された建枠２と
、横長の長方形枠に構成された布枠３とプレース４．４
とから構成されている。The hanging scaffolding frame 1 consists of a building frame 2 configured as a vertically long rectangular frame, a cloth frame 3 configured as a horizontally long rectangular frame, and a place 4.4.
It is composed of.

建枠２の上端横部材５には吊り下げ機構６が構成されて
いる。A hanging mechanism 6 is constructed on the upper end horizontal member 5 of the building frame 2.

吊り下げ機構６には、少なくとも吊シ下げ金具７、レバ
ー８　、８　、締付ポルト９および締付ナツト１３が取
付けられている。At least a hanging metal fitting 7, levers 8, 8, a tightening port 9, and a tightening nut 13 are attached to the hanging mechanism 6.

吊り下げ金具７は、真上に開口するＵ字型に形成されそ
の上端部にはフック７ａ、７ａが形成されている。The hanging fitting 7 is formed in a U-shape that opens directly above, and has hooks 7a, 7a formed at its upper end.

また、レバー８．８は逆り字型に形成され、吊り下げ金
具７の左右両側にポル）８ｂによって回転自在にボルト
止めされ、さらに左右レバー８゜８の下端部は、この部
分にスペーサ１０を介在しかつポルト１１によって連結
されている。Further, the lever 8.8 is formed in an inverted shape, and is rotatably bolted to the left and right sides of the hanging fitting 7 by poles 8b, and furthermore, the lower ends of the left and right levers 8. and are connected by port 11.

このように構成された吊り下げ金具７およびレバー８，
８は建枠２の上端横部材５の左右両側に吊り下げ金具７
を上端横部材５に挿通することによって取付けられてい
る。The hanging fitting 7 and lever 8 configured in this way,
8 is a hanging metal fitting 7 on both left and right sides of the upper end horizontal member 5 of the building frame 2.
It is attached by inserting it into the upper end horizontal member 5.

かかる場合、両側吊り下げ金具７，７のフック７ａ、７
ａおよび左右レバー８．８のてこ部３ａ　、ｇａは相対
向し、かつ両側吊り下げ金具７．７はレバー８，８とと
もに上端横部材５の長手方向に自由に摺動することが可
能とされている。In such a case, the hooks 7a, 7 of the hanging fittings 7, 7 on both sides
a and the lever portions 3a and ga of the left and right levers 8.8 face each other, and the hanging fittings 7.7 on both sides can freely slide in the longitudinal direction of the upper end horizontal member 5 together with the levers 8, 8. ing.

締付ポルト９，９の基端部は上端横部材５のほぼ中央部
にボルト止めされた固定金具１２に回転自在に連結され
、他端部はスペーサー１０　、１０のほぼ中央部に形成
された小孔１０ａに挿通されその貫通部分に締付はナツ
ト１３．１３（以下、蝶ナツト１３．１３とする）が螺
合されている。The base ends of the tightening ports 9, 9 are rotatably connected to a fixing metal fitting 12 bolted to approximately the center of the upper end horizontal member 5, and the other ends are formed approximately at the center of the spacers 10, 10. It is inserted into the small hole 10a, and a tightening nut 13.13 (hereinafter referred to as wing nut 13.13) is screwed into the penetrating portion.

かかる構成において、吊り下げ金具７のフック７ａとレ
バー８のてこ部８ａ間にプレートガーダ−１４の下部フ
ランジ１４ａの左右縁端部を係合するとともに蝶ナツ）
１３．１３をそれぞれ強く締付けることによりフック７
ａとてこ部８ａ間で下部フランジ１４ａの縁端部を強く
挾持することが可能とされている（第４図参照）。In this configuration, the left and right edges of the lower flange 14a of the plate girder 14 are engaged between the hook 7a of the hanging fitting 7 and the lever part 8a of the lever 8, and
13. By tightening each of 13 strongly, the hook 7
It is possible to firmly clamp the edge of the lower flange 14a between the lever portion 8a and the lever portion 8a (see FIG. 4).

布枠３は、その基端部を建枠２の下端横部材１５に回転
自在に連結することにより建枠２に対して起倒自在とさ
れている。また、布枠３には床板１６が敷設され、また
その左右腕杆１７　、１７の先端部には連結フック１８
．１８が取付けられている。The cloth frame 3 can be raised and lowered relative to the building frame 2 by rotatably connecting its base end to the lower end horizontal member 15 of the building frame 2. Further, a floor plate 16 is laid on the cloth frame 3, and connecting hooks 18 are provided at the tips of the left and right arm rods 17, 17.
．． 18 is installed.

プレース４．４は、建枠２の上端部と布枠３の先端部間
に斜めに架設されている。The place 4.4 is installed diagonally between the upper end of the building frame 2 and the tip of the cloth frame 3.

プレース４，４の上下両端部は、建枠２の左右脚杆１９
，１９および布枠３の左右腕杆１７゜１７にそれぞれ回
転自在に連結されている。またプレース４，４は少なく
とも２部材を回転自在に連結して形成することにより連
結部を中心に折曲自在とされている。The upper and lower ends of places 4 and 4 are the left and right leg rods 19 of the building frame 2.
, 19 and the left and right arm rods 17° 17 of the cloth frame 3, respectively. Further, the places 4, 4 are formed by rotatably connecting at least two members, so that they can be bent around the connecting portion.

なお、プレース４は径の異なる複数本の鋼管を太い方に
細い方をその長手方向に摺動自在に挿通して連結するこ
とにより伸縮自在に構成してもよいものとする。The place 4 may be configured to be expandable and retractable by connecting a plurality of steel pipes having different diameters by slidingly inserting the thicker one in the longitudinal direction and the thinner one in the longitudinal direction.

かかる構成において、吊り足場枠１の設置に際しては、
布枠３を水平に押し倒し、運搬・収納等に際しては布枠
３を起し、建枠２に沿わせておりたたむ。かかる場合、
布枠３の横幅を建枠２のそれより一回り小さくし、布枠
３が建枠２内に完全に収納できるように構成することに
より、全体が嵩張らないようにしである。In such a configuration, when installing the suspended scaffolding frame 1,
The cloth frame 3 is pushed down horizontally, and when transporting, storing, etc., the cloth frame 3 is raised and folded along the building frame 2. In such case,
The width of the cloth frame 3 is made one size smaller than that of the building frame 2, and the cloth frame 3 is configured to be completely housed within the building frame 2, so that the whole structure is not bulky.

続いて、この発明に係る吊シ足場工法を順を追って説明
する（第７図〜第１０図参照）。Next, the suspended scaffolding construction method according to the present invention will be explained step by step (see FIGS. 7 to 10).

■　最初の吊シ足場枠１を梁１４の下に吊シ下げる（第
７図参照）。吊り足場枠１を吊り下げるには梁１４の下
部フランジ１４ａの左右縁端部に吊り下げ金具７のフッ
ク７ａとレバー８間を係合する左ともに蝶ナツト１３を
強く締付ける（第４図参照）。続いて、布枠３を水平に
押し倒す。■ Hang the first scaffolding frame 1 below the beam 14 (see Figure 7). To suspend the hanging scaffold frame 1, strongly tighten the wing nuts 13 on the left and right sides of the lower flange 14a of the beam 14, which engage between the hook 7a of the hanging fitting 7 and the lever 8 (see Fig. 4). . Next, push down the cloth frame 3 horizontally.

■　続いて、第２番目の吊シ足場枠１を最初の吊り足場
枠１の左右連結フック１８．１８上に第２番目の吊り足
場枠１の下端横部材１５を係合し、吊り足場枠１を起立
させて、前記最初の吊り足場枠１と同じ方法で梁１４の
下に吊り下げ金具を固定することにより、最初の吊り足
場枠１と第２番目のそれとを連結する（第８図参照）。■ Next, engage the lower end horizontal member 15 of the second suspended scaffolding frame 1 on the left and right connecting hooks 18, 18 of the first suspended scaffolding frame 1, and then The first suspended scaffolding frame 1 and the second one are connected by standing up the first suspended scaffolding frame 1 and fixing the hanging fittings under the beam 14 in the same manner as the first suspended scaffolding frame 1 (see Fig. 8). reference).

■　以下、同様に第３番目、第４番目の順に吊り足場枠
１．・・・を吊り下げ、梁１４の下にその長手方向に連
続する作業足場２１を構成する（第９，１０図参照）。■ Thereafter, in the same way, the third and fourth hanging scaffold frames 1. ... is suspended, and a working scaffold 21 is constructed below the beam 14 and continuing in the longitudinal direction thereof (see FIGS. 9 and 10).

■　梁１４が平行に設置されている場合には各梁１４の
下に作業足場２１を構成し、必要あるときは、さらに左
右作業足場２１．２１間に単管２０足場板２２とから作
業足場２３を構成する（第１１図参照）。、 発明の効果 この発明は、以上の構成からなり、橋梁等の梁下に作業
足場を構成する際、複数の吊り足場枠を前後連結しつつ
吊り下げることによシ梁長手方向に連続する作業足場を
短期間で、しかもきわめて簡単に設置することができる
。■ When the beams 14 are installed in parallel, a work scaffold 21 is constructed under each beam 14, and when necessary, a work scaffold is added between the left and right work scaffolds 21 and 21 with a single pipe 20 and a scaffold board 22. 23 (see FIG. 11). , Effects of the Invention This invention has the above configuration, and when constructing a work scaffold under a beam such as a bridge, a plurality of hanging scaffold frames are connected in the front and back and suspended, thereby allowing continuous work in the longitudinal direction of the beam. Scaffolding can be installed in a short period of time and extremely easily.

また、各吊り足場枠はそれぞれ独立して梁に吊り下げら
れ、かつ相隣り合う吊り足場枠も相互に連結されている
ので、突風にあおられ、大きく揺”れる心配は全くなく
、強度上並びに安全上、きわめてすぐれている。In addition, each suspended scaffolding frame is independently suspended from the beam, and adjacent suspended scaffolding frames are also connected to each other, so there is no risk of the scaffolding being swayed by gusts of wind. It is extremely safe in terms of safety.

また、この発明に係る吊り足場枠は構成がきわめて簡単
なうえ折りたたみが可能であるため、運搬、収納等取扱
いがきわめて容易で実用性が高い。Furthermore, the suspended scaffolding frame according to the present invention has an extremely simple structure and is foldable, so it is extremely easy to transport, store, etc., and is highly practical.

【図面の簡単な説明】[Brief explanation of drawings]

第１図〜第１１図は、この発明の一実施例を示したもの
で、第１図は吊り足場枠の斜視図、第２図、第３図はそ
の側面図、正面図、第４図は吊り下げ機構の正面図、第
５図および第６図は第４図におけるＩ−Ｉ線、■−■線
断面図、第７図〜第１１図は吊り足場工法の工程を示す
もので、第７図〜第１０図はその側面図、第１１図は梁
が平行に設置されている場合の左右作業足場間に新たな
作業足場を構成した時の断面図である。 １・・吊り足場枠、２・・建枠、３・・布枠、４・・プ
レース、５・・上端横部材、 ６・・吊り下げ機構、７・・吊り下げ金具、８・・レバ
ー、９・・締付ポルト、 １０・・スペーサ、１１・・連結ボルト、１２・・取付
ポル）、１３−・蝶ナツト、１４・・梁、１５・・下端
横部材、１６・・床板１７・・腕杆、１８・・連結フッ
ク、 １９・・脚杆、２０・・単管、２１・・作業足場２２・
・足場板、２３・・作業足場。 第１図 第６図　　　　　　第５図 第７図 １ム 第８図 １ム 第　９　図 ＬFigures 1 to 11 show an embodiment of the present invention, with Figure 1 being a perspective view of a hanging scaffold frame, Figures 2 and 3 being a side view, front view, and Figure 4. is a front view of the hanging mechanism, Figures 5 and 6 are cross-sectional views taken along lines I-I and ■-■ in Figure 4, and Figures 7 to 11 show the process of the hanging scaffolding method. 7 to 10 are side views thereof, and FIG. 11 is a sectional view when a new work scaffold is constructed between the left and right work scaffolds when the beams are installed in parallel. 1. Hanging scaffold frame, 2. Construction frame, 3. Cloth frame, 4. Place, 5. Upper end horizontal member, 6. Hanging mechanism, 7. Hanging metal fittings, 8. Lever, 9. Tightening port, 10. Spacer, 11. Connection bolt, 12. Mounting port), 13-. Wing nut, 14. Beam, 15. Lower end horizontal member, 16. Floor plate 17. Arm rod, 18... Connecting hook, 19... Leg rod, 20... Single pipe, 21... Work scaffolding 22.
・Scaffolding board, 23...Working scaffold. Figure 1 Figure 6 Figure 5 Figure 7 Figure 1m Figure 8 Figure 1m Figure 9 L

Claims (1)

【特許請求の範囲】 （１、）梁下にその長手方向に沿つて複数の吊り足場枠
を相互に連結しつつ吊り下げることを特徴とする吊り足
場工法。 （２、）建枠下端部に布枠を起倒自在に連結し、この布
枠先端部と建枠上端部間にプレースをその両端を回転自
在に連結して架設するとともにこのブレースを折曲若し
くは伸縮自在に構成し、かつ前記建枠上端部に吊り下げ
機構を、前記布枠先端部に連結フックをそれぞれ設けて
なることを特徴とする吊り足場枠。[Claims] (1.) A suspended scaffold construction method characterized by suspending a plurality of suspended scaffolding frames under a beam along its longitudinal direction while interconnecting them. (2.) A cloth frame is connected to the lower end of the building frame so that it can be raised and lowered, and a place is erected between the tip of the cloth frame and the upper end of the building frame by connecting both ends of the place so that it can rotate, and the brace is bent. Alternatively, a hanging scaffolding frame is configured to be extendable and contractible, and is provided with a hanging mechanism at the upper end of the building frame and a connecting hook at the tip of the fabric frame.