JP6172632B2 - Main beam structure for work scaffold in boiler furnace, main beam transfer device for work scaffold, and installation method of work scaffold - Google Patents

Main beam structure for work scaffold in boiler furnace, main beam transfer device for work scaffold, and installation method of work scaffold Download PDF

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JP6172632B2
JP6172632B2 JP2013173249A JP2013173249A JP6172632B2 JP 6172632 B2 JP6172632 B2 JP 6172632B2 JP 2013173249 A JP2013173249 A JP 2013173249A JP 2013173249 A JP2013173249 A JP 2013173249A JP 6172632 B2 JP6172632 B2 JP 6172632B2
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main
scaffold
flange
longitudinal direction
boiler furnace
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JP2015040451A (en
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諭司 高橋
諭司 高橋
望 二村
望 二村
森口　亮
亮 森口
翔平 佐藤
翔平 佐藤
誠 坂本
誠 坂本
悟 菊池
悟 菊池
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Hitachi Plant Construction Co Ltd
Mitsubishi Power Ltd
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Hitachi Plant Construction Co Ltd
Mitsubishi Hitachi Power Systems Ltd
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Priority to JP2013173249A priority Critical patent/JP6172632B2/en
Priority to KR1020140109224A priority patent/KR101580230B1/en
Priority to EP14181740.3A priority patent/EP2840202B1/en
Priority to ZA2014/06198A priority patent/ZA201406198B/en
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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G3/00—Scaffolds essentially supported by building constructions, e.g. adjustable in height
    • E04G3/28—Mobile scaffolds; Scaffolds with mobile platforms
    • E04G3/30—Mobile scaffolds; Scaffolds with mobile platforms suspended by flexible supporting elements, e.g. cables
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G3/00—Scaffolds essentially supported by building constructions, e.g. adjustable in height
    • E04G3/18—Scaffolds essentially supported by building constructions, e.g. adjustable in height supported by cantilevers or other provisions mounted in openings in the building, e.g. window openings
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G3/00—Scaffolds essentially supported by building constructions, e.g. adjustable in height
    • E04G3/22—Scaffolds essentially supported by building constructions, e.g. adjustable in height supported by roofs or ceilings
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G3/00—Scaffolds essentially supported by building constructions, e.g. adjustable in height
    • E04G3/24—Scaffolds essentially supported by building constructions, e.g. adjustable in height specially adapted for particular parts of buildings or for buildings of particular shape, e.g. chimney stacks or pylons
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G3/00—Scaffolds essentially supported by building constructions, e.g. adjustable in height
    • E04G3/24—Scaffolds essentially supported by building constructions, e.g. adjustable in height specially adapted for particular parts of buildings or for buildings of particular shape, e.g. chimney stacks or pylons
    • E04G3/246—Scaffolds essentially supported by building constructions, e.g. adjustable in height specially adapted for particular parts of buildings or for buildings of particular shape, e.g. chimney stacks or pylons following the inside contour of a building
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B37/00—Component parts or details of steam boilers
    • F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
    • F22B37/24—Supporting, suspending, or setting arrangements, e.g. heat shielding

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Movable Scaffolding (AREA)
  • Bridges Or Land Bridges (AREA)
  • Conveying And Assembling Of Building Elements In Situ (AREA)

Description

本発明は、ボイラ火炉内に点検用の作業足場を仮設するためのボイラ火炉内の作業足場用主梁構造、作業足場用主梁搬送装置、及び作業足場の設置方法に関する。   The present invention relates to a main beam structure for a work scaffold in a boiler furnace, a main beam transfer device for the work scaffold, and a method for installing the work scaffold for temporarily installing a work scaffold for inspection in the boiler furnace.

従来、ボイラ火炉内の点検を行う場合には、ボイラを停止し、炉内で作業を行うことができる程度に温度が低下してから、作業員がボイラ火炉内に入り、まず下部のホッパーに足場ベースを構築していた。そして、炉壁の内面に沿って上方の水管ノーズ部や過熱器の下部まで足場枠を組み上げて、足場枠の最上部に足場用梁を掛け渡す。次いで足場板を足場用梁に載置固定して作業足場を形成していた。この作業足場から作業員がボイラ火炉内の上方に設置された過熱器などの点検、補修、クリンカの除去等の作業を行っていた。   Conventionally, when checking the inside of a boiler furnace, the temperature is lowered to such an extent that the boiler can be stopped and work can be performed in the furnace, and then an operator enters the boiler furnace and first enters the lower hopper. We were building a scaffolding base. Then, a scaffold frame is assembled along the inner surface of the furnace wall to the upper water tube nose and the lower part of the superheater, and the scaffold beam is hung on the top of the scaffold frame. Next, the scaffolding plate was placed and fixed on the scaffolding beam to form a working scaffold. From this work scaffold, workers were inspecting, repairing, and removing the clinker, such as the superheater installed above the boiler furnace.

しかし、このような作業足場は、炉内温度が低下した後でなければ組み立てることができなかった。また、数十メートルにも及ぶボイラ火炉の内部に足場枠を組み立て・撤去する作業は長時間を要するため、ボイラの停止時間が長くなって稼動効率が低下してしまう。さらに、トラブル等により緊急停止しても炉内温度が低下するまで待たなければならず、即座に対応できないという問題があった。   However, such a working scaffold could only be assembled after the furnace temperature had dropped. In addition, since the work for assembling and removing the scaffolding frame in the boiler furnace, which is several tens of meters long, takes a long time, the boiler stop time is lengthened and the operation efficiency is lowered. Furthermore, there is a problem that even if an emergency stop is caused due to a trouble or the like, it is necessary to wait until the temperature in the furnace decreases, so that it cannot be dealt with immediately.

そこで、特許文献１の足場用梁挿入装置は、梁挿入口から一対の梁挿入枠体で挟んだ足場用梁を挿入し、一端が上側梁挿入枠体に接続したワイヤの他端を足場用梁の先端に接続させて、ワイヤで水平状態に維持した状態で足場用梁を水管ノーズ部の上側傾斜部に掛け渡している。これにより、炉内温度が下がっていなくても作業足場の組み立て作業の一部を行うことができ、効率的に作業足場を組み立てることができる。   Therefore, the scaffold beam insertion device of Patent Document 1 inserts a scaffold beam sandwiched between a pair of beam insertion frames from a beam insertion port, and uses the other end of the wire connected to the upper beam insertion frame for the scaffold. The scaffolding beam is stretched over the upper inclined portion of the water tube nose while being connected to the tip of the beam and maintained in a horizontal state with a wire. Thereby, even if the furnace temperature is not lowered, a part of the assembly work of the work scaffold can be performed, and the work scaffold can be assembled efficiently.

また特許文献２のボイラ火炉内作業用足場構造は、単一のＨ形鋼からなり、Ｈ形鋼を２本のＣ形鋼の間に挟みこみ、使用状態で火炉開口部を通じて火炉内に挿入される挿入梁を備えている。この挿入梁に足場を設けて短い設置工程で点検作業を行うことができる。   In addition, the working structure in the boiler furnace of Patent Document 2 consists of a single H-section steel, which is sandwiched between two C-section steels and inserted into the furnace through the furnace opening in use. With an insertion beam. A check can be performed in a short installation process by providing a scaffold on the insertion beam.

また特許文献３の足場用挿入装置は、足場用梁を把持する把持部と、足場用梁をボイラ内に送り出す送出部と、ボイラの外部を走行する走行部を備えている。   Further, the scaffold insertion device of Patent Document 3 includes a gripping part that grips the scaffolding beam, a sending part that feeds the scaffolding beam into the boiler, and a traveling part that travels outside the boiler.

実開平５−３４８１号公報Japanese Utility Model Publication No. 5-3481 特開２０１１−８０６６８号公報JP 2011-80668 A 特開２００５−２６４５４６号公報JP 2005-264546 A

しかしながら、特許文献１の足場用梁挿入装置は、足場用梁にワイヤを接続させる作業を、引き込み具等を用いたり、炉内に作業者が入ったりして行わなければならず、煩雑な作業となっていた。また上下の駆動ローラだけで主梁の出し入れを行うと横方向に振れる現象が発生し易くなってしまう。   However, in the scaffold beam insertion device of Patent Document 1, the work of connecting the wire to the scaffold beam must be performed using a retractor or the like, or an operator enters the furnace, which is a complicated task. It was. In addition, if the main beam is inserted and removed with only the upper and lower drive rollers, a phenomenon of lateral shaking is likely to occur.

特許文献２の作業用足場構造は、挿入梁を継ぎ足しして張り渡す構造ではないため、作業用足場の範囲が小さく、点検作業する範囲が極めて限定的であった。   Since the working scaffold structure of Patent Document 2 is not a structure in which the insertion beam is added and stretched, the working scaffold has a small range and the inspection work range is extremely limited.

特許文献３の装置は、足場用梁の側面を把持しているため、足場用梁に用いる構造がＨ形鋼などのように限定されていた。また、足場用梁が長尺になるにつれて片持ち支持の先端が下方に垂れ下がるため、受け入れ側の支持台を持ち上げる工程が必要となる。   Since the apparatus of Patent Document 3 grips the side surface of the scaffolding beam, the structure used for the scaffolding beam is limited to an H-shaped steel or the like. Moreover, since the tip of the cantilever support hangs downward as the scaffolding beam becomes longer, a step of lifting the receiving support is necessary.

そこで本発明は、上記従来技術の問題点を解決するため、ボイラ火炉内の作業足場を容易に取り付け・取り外し可能なボイラ火炉内の作業足場用主梁構造、作業足場用主梁搬送装置、及び作業足場の設置方法を提供することを目的としている。   Therefore, in order to solve the above-described problems of the prior art, the present invention provides a main beam structure for a work scaffold in a boiler furnace, a main beam transfer device for the work scaffold, and a work scaffold in the boiler furnace that can be easily attached and detached. The purpose is to provide a method for installing a work scaffold.

本発明は、上記の課題を解決するための第１の手段として、一対のＨ形鋼の一方のフランジ同士が対向するように上下に積層し、前記フランジの間にトラス構造を設けた梁本体と、一端が前記梁本体の側面に支持されて前記梁本体の側面から前記梁本体の長手方向と交差する方向へ向けて扇状に開閉可能とし、他端が隣接する他の前記梁本体の側面と連結可能な継材と、を備えたことを特徴とするボイラ火炉内の作業足場用主梁構造を提供することにある。   As a first means for solving the above-mentioned problems, the present invention provides a beam body in which a pair of H-shaped steels are stacked vertically so that one flange faces each other, and a truss structure is provided between the flanges. And one end of which is supported by the side surface of the beam main body so that it can be opened and closed in a fan shape from the side surface of the beam main body in a direction crossing the longitudinal direction of the beam main body, and the other end is adjacent to the side surface of the other beam main body. The present invention provides a main beam structure for a working scaffold in a boiler furnace, characterized in that it includes a joint material connectable to the working furnace.

本発明は、上記の課題を解決するための第２の手段として、上記第１の解決手段において、前記梁本体は、いずれか一方の前記Ｈ形鋼のウェブの両主面から前記フランジと平行に延出し、かつ前記梁本体の長手方向に沿って延出したガイドを備えたことを特徴とするボイラ火炉内の作業足場用主梁構造を提供することにある。   According to the present invention, as a second means for solving the above-described problem, in the first solving means, the beam main body is parallel to the flange from both main surfaces of any one of the H-shaped steel webs. It is another object of the present invention to provide a main beam structure for a working scaffold in a boiler furnace, characterized by comprising a guide extending in the longitudinal direction of the beam main body.

本発明は、上記の課題を解決するための第３の手段として、上記第１又は第２の解決手段において、前記梁本体は、先端に水管ノーズ部の吊りロッドと係合する吊り具を備えたことを特徴とするボイラ火炉内の作業足場用主梁構造を提供することにある。   According to the present invention, as a third means for solving the above-described problem, in the first or second solving means, the beam main body includes a hanging tool that engages with a hanging rod of a water tube nose portion at a tip. An object of the present invention is to provide a main beam structure for a working scaffold in a boiler furnace.

本発明は、上記の課題を解決するための第４の手段として、上記第１又は第２の解決手段において、前記梁本体は、一対のＨ形鋼の一方のフランジ同士が対向するように上下に積層し、前記フランジの間にトラス構造を設けた梁単体を長手方向に複数連結した構成であり、前記梁単体は、前記継材が側面にない構成、前記継材がいずれか一方の側面に１つ以上形成された構成、前記継材が両側面にそれぞれ１つ以上形成された構成のいずれかであることを特徴とするボイラ火炉内の作業足場用主梁構造を提供することにある。   According to the present invention, as a fourth means for solving the above-described problem, in the first or second solving means, the beam body is vertically moved so that one flange of a pair of H-shaped steel faces each other. And a single beam having a truss structure between the flanges is connected in the longitudinal direction. The single beam has a configuration in which the joint is not on the side, and the joint is on either side. It is an object to provide a main beam structure for a working scaffold in a boiler furnace, wherein one or more of the above-mentioned joints are formed on both side surfaces. .

本発明は、上記の課題を解決するための第５の手段として、一対のＨ形鋼の一方のフランジ同士が対向するように上下に積層し、前記フランジの間にトラス構造を設けた梁本体と、一端が前記梁本体の側面に支持されて前記梁本体の側面から前記梁本体の長手方向と交差する方向へ向けて扇状に開閉可能とし、他端が隣接する他の前記梁本体の側面と連結可能な継材と、を備えたボイラ火炉内の作業足場用主梁構造を載置可能として、ボイラ火炉の開口部から火炉内へ前記梁本体の長手方向に向けて搬送可能なローラ本体と、前記ローラ本体のローラ面から前記梁本体の載置側へ立設して前記梁本体を囲む枠体と、を備え、前記枠体には、前記一方のＨ形鋼の他方のフランジの両主面を把持可能な把持部と、前記把持部で把持した前記梁本体を長手方向に沿って進退移動可能な搬送部と、を形成したことを特徴とする作業足場用主梁搬送装置を提供することにある。   As a fifth means for solving the above-mentioned problems, the present invention provides a beam body in which a pair of H-shaped steels are vertically stacked so that one flange faces each other, and a truss structure is provided between the flanges. And one end of which is supported by the side surface of the beam main body so that it can be opened and closed in a fan shape from the side surface of the beam main body in a direction crossing the longitudinal direction of the beam main body, and the other end is adjacent to the side surface of the other beam main body. A roller body that can be transported from the opening of the boiler furnace into the furnace in the longitudinal direction of the beam body. And a frame body that stands from the roller surface of the roller body to the beam body mounting side and surrounds the beam body, and the frame body includes a flange of the other H-shaped steel. A gripping part capable of gripping both main surfaces, and the beam main body gripped by the gripping part And to provide a working scaffold main beam transport device, wherein the longitudinal direction transport unit that can move back and forth along, was formed.

本発明は、上記の課題を解決するための第６の手段として、上記第５の解決手段において、前記枠体の内側には、前記梁本体のいずれか一方の前記Ｈ形鋼のウェブの両主面から前記フランジと平行に延出し、かつ前記梁本体の長手方向に沿って延出したガイドの側面と摺接する第１ガイドローラと、前記他方のＨ形鋼の他方のフランジの側面に摺接する第２ガイドローラと、を形成したことを特徴とする作業足場用主梁搬送装置を提供することにある。   The present invention provides, as a sixth means for solving the above-mentioned problems, in the fifth solution means, wherein both of the H-shaped steel webs of either one of the beam bodies are provided inside the frame body. A first guide roller extending in parallel with the flange from the main surface and in sliding contact with the side surface of the guide extending along the longitudinal direction of the beam main body, and sliding on the side surface of the other flange of the other H-shaped steel An object of the present invention is to provide a main beam conveying device for a working scaffold, characterized in that a second guide roller in contact therewith is formed.

本発明は、上記の課題を解決するための第７の手段として、上記第５又は第６の解決手段において、前記枠体の上部には、前記一方のＨ形鋼のフランジの主面に摺接する上部送り出しローラを形成したことを特徴とする作業足場用主梁搬送装置を提供することにある。   According to the present invention, as a seventh means for solving the above-described problems, in the fifth or sixth solving means, the upper portion of the frame body is slid on the main surface of the flange of the one H-shaped steel. An object of the present invention is to provide a main beam conveying device for a working scaffold, which is characterized in that an upper feed roller in contact therewith is formed.

本発明は、上記の課題を解決するための第８の手段にとして、一対のＨ形鋼の一方のフランジ同士が対向するように上下に積層し、前記フランジの間にトラス構造を設けた梁単体を長手方向に連結しながら挿入し、炉内に複数の作業足場用主梁構造を形成し、開口部側の隣接する前記梁単体の継材を連結して作業用通路を形成し、前記作業用通路から足場板を拡張して設置することを特徴とする作業足場の設置方法。   As an eighth means for solving the above-described problems, the present invention provides a beam in which a pair of H-section steel is vertically stacked so that one flange faces each other, and a truss structure is provided between the flanges. A single unit is inserted while being connected in the longitudinal direction, a plurality of main beam structures for working scaffolds are formed in the furnace, a joint for adjacent beams on the opening side is connected to form a working path, An installation method for a work scaffold, wherein the scaffold board is extended from the work passage.

本発明によれば、上記のように、トラス構造の梁本体の側面から扇状に開閉可能とし、隣接する梁本体に連結可能な継材を取り付けているので、所定の剛性を備えた梁本体の搬送形態を簡易化でき、かつ作業足場用の梁を容易かつ短工程で形成することができる。   According to the present invention, as described above, the beam body that can be opened and closed in a fan shape from the side surface of the beam body of the truss structure and that can be connected to the adjacent beam body is attached. A conveyance form can be simplified and a beam for a work scaffold can be formed easily and in a short process.

本発明によれば、上記のように、梁本体にガイドを取り付けているので、搬送装置を用いた送り出しの際、梁本体の上部の横ぶれを防止して、梁本体をボイラ火炉の開口部から炉内へ直線状に搬送することができ、作業時間の短縮化や作業人員の減少化が図れる。   According to the present invention, as described above, the guide is attached to the beam body, so that when the conveying device is used for feeding, the beam body is prevented from being shaken at the top, and the beam body is opened in the boiler furnace. Can be transported in a straight line from the furnace to the furnace, shortening the working time and reducing the number of workers.

本発明によれば、上記のように、片持ち支持されて先端が垂下した梁本体を吊り上げて梁全体を水平に配置することができる。また水管ノーズ部の下部に支持台のような突部を設けることなく作業足場用梁を仮設することができる。   According to the present invention, as described above, the entire beam can be horizontally arranged by lifting the beam body that is cantilevered and the tip of which is suspended. In addition, it is possible to temporarily install a working scaffold beam without providing a projecting portion such as a support base below the water pipe nose portion.

本発明によれば、上記のように、把持部で梁本体のＨ形鋼のフランジを把持しながら搬送しているので、梁本体の側面に継材のような付帯物、トラス構造などのような凹凸があっても梁本体を片持ち支持した状態で搬送することができる。
また把持部で梁本体のＨ形鋼のフランジの両主面を把持しているので、片持ち支持した先端の垂れ下がりを抑えることができる。また、梁本体を仮設位置で固定することができる。 According to the present invention, as described above, the grip part is transported while gripping the H-shaped steel flange of the beam body. Even if there are irregularities, the beam body can be transported in a cantilevered state.
Moreover, since both the main surfaces of the H-shaped steel flange of the beam body are gripped by the gripping portion, it is possible to suppress drooping of the tip end that is cantilevered. Further, the beam main body can be fixed at the temporary position.

本発明によれば、上記のように、第１及び第２ガイドローラにより梁本体の横ぶれを防止して、梁本体を開口部から炉内へ直線状に送り出すことができる。   According to the present invention, as described above, the beam main body can be prevented from being laterally shaken by the first and second guide rollers, and the beam main body can be sent out linearly from the opening into the furnace.

本発明によれば、上記のように、梁本体の上部のＨ形鋼のフランジの主面に摺動する送りローラを備えているので、梁本体の片持ち支持側の起き上がりを押えて、梁本体の先端側の垂れ下がりを少なくすることができる。   According to the present invention, as described above, since the feed roller that slides on the main surface of the H-shaped steel flange at the top of the beam body is provided, the rising of the beam body on the cantilever support side is suppressed, and the beam The sagging on the tip side of the main body can be reduced.

本発明によれば、上記のように、梁単体を長手方向に連結しながら挿入し、炉内に複数の作業足場用主梁構造を形成し、開口部側の隣接する前記梁単体の継材を連結して作業用通路を形成しているため、前記作業用通路から容易に足場板を拡張して設置することができ、設置作業時間の短縮化を図ることができる。   According to the present invention, as described above, a single beam is inserted while being connected in the longitudinal direction, a plurality of main beam structures for a working scaffold are formed in the furnace, and the adjacent single beam joint on the opening side is formed. Since the working path is formed by connecting the two, the scaffold plate can be easily expanded and installed from the working path, and the installation work time can be shortened.

本発明のボイラ火炉内の作業足場用主梁構造及び作業足場用主梁搬送装置の側面図である。It is a side view of the main beam structure for working scaffolds in the boiler furnace of this invention, and the main beam conveying apparatus for working scaffolds. 本発明のボイラ火炉内の作業足場用主梁構造を用いた作業足場の説明図である。It is explanatory drawing of the working scaffold using the main beam structure for working scaffolds in the boiler furnace of this invention. 本発明のボイラ火炉内の作業足場用主梁構造１０ｄの説明図である。It is explanatory drawing of the main beam structure 10d for working scaffolds in the boiler furnace of this invention. 本発明のボイラ火炉内の作業足場用主梁構造１０ｂの説明図である。It is explanatory drawing of the main beam structure 10b for working scaffolds in the boiler furnace of this invention. 本発明のボイラ火炉内の作業足場用主梁構造１０ｂの梁単体Ｃ，Ｄの連結手段の説明図である。It is explanatory drawing of the connection means of the beam single-piece | units C and D of the main beam structure 10b for working scaffolds in the boiler furnace of this invention. 本発明のボイラ火炉内の作業足場用主梁構造１０ｂの梁単体Ｂの継材の動作説明図である。It is operation | movement explanatory drawing of the joint material of the beam single-piece | unit B of the main beam structure 10b for work scaffolds in the boiler furnace of this invention. 本発明のボイラ火炉内の作業足場用主梁構造の送り出しの説明図である。It is explanatory drawing of sending out of the main beam structure for working scaffolds in the boiler furnace of this invention. 本発明のボイラ火炉内の作業足場用主梁構造の吊り具、吊ロッドの説明図である。It is explanatory drawing of the suspension tool and suspension rod of the main beam structure for working scaffolds in the boiler furnace of this invention. 本発明の作業足場用主梁搬送装置の斜視図である。It is a perspective view of the main beam conveying apparatus for working scaffolds of this invention. 本発明の作業足場用主梁搬送装置の側面図である。It is a side view of the main beam conveying apparatus for working scaffolds of this invention. 本発明の作業足場用主梁搬送装置の平面図である。It is a top view of the main beam conveying apparatus for working scaffolds of this invention. 図１０のＡ−Ａ矢視図である。It is an AA arrow line view of FIG. 図１０のＢ−Ｂ矢視図である。It is a BB arrow line view of FIG. 図１０のＣ−Ｃ矢視図である。It is CC arrow line view of FIG. 把持部の説明図であり、（Ａ）は平面図、（Ｂ）は側面図、（Ｃ）は開放状態の正面図、（Ｄ）は把持状態の正面図である。It is explanatory drawing of a holding part, (A) is a top view, (B) is a side view, (C) is a front view of an open state, (D) is a front view of a holding state. 作業足場の設置方法の説明図１である。It is explanatory drawing 1 of the installation method of a working scaffold. 作業足場の設置方法の説明図２である。It is explanatory drawing 2 of the installation method of a working scaffold. 作業足場の設置方法の説明図３である。It is explanatory drawing 3 of the installation method of a working scaffold.

本発明のボイラ火炉内の作業足場用主梁構造（以下、単に作業足場用主梁構造という。）、作業足場用主梁搬送装置、及び作業足場の設置方法の実施形態を添付の図面を参照しながら、以下詳細に説明する。図１は、本発明のボイラ火炉内の作業足場用主梁構造及び作業足場用主梁搬送装置の側面図である。なお図１において継材は省略している。図２は本発明のボイラ火炉内の作業足場用主梁構造を用いた作業足場の説明図である。図３は本発明のボイラ火炉内の作業足場用主梁構造１０ｄの説明図であり、梁単体Ａ〜Ｅの各平面図、側面図、背面図を示している。図４は本発明のボイラ火炉内の作業足場用主梁構造１０ｂの説明図であり、梁単体Ａ〜Ｅの各平面図、側面図、背面図を示している。図５は、本発明のボイラ火炉内の作業足場用主梁構造１０ｂの梁単体Ｃ，Ｄの連結手段の説明図である。なお図５において継材は省略している。図６は、本発明のボイラ火炉内の作業足場用主梁構造１０ｂの梁単体Ｂの継材の動作説明図である。   Referring to the accompanying drawings, embodiments of the main beam structure for work scaffolds in the boiler furnace of the present invention (hereinafter simply referred to as main beam structure for work scaffolds), the main beam transfer device for work scaffolds, and the method for installing the work scaffolds are described. However, this will be described in detail below. FIG. 1 is a side view of a main beam structure for a working scaffold and a main beam conveying device for the working scaffold in the boiler furnace of the present invention. In FIG. 1, the joint material is omitted. FIG. 2 is an explanatory diagram of a work scaffold using the main beam structure for the work scaffold in the boiler furnace of the present invention. FIG. 3 is an explanatory view of the main beam structure 10d for a working scaffold in the boiler furnace of the present invention, and shows a plan view, a side view, and a rear view of each of the single beams A to E. FIG. 4 is an explanatory view of the main beam structure 10b for a working scaffold in the boiler furnace of the present invention, and shows a plan view, a side view, and a rear view of the single beams A to E. FIG. 5 is an explanatory diagram of the connecting means for the single beams C and D of the main beam structure 10b for a working scaffold in the boiler furnace of the present invention. In FIG. 5, the joint material is omitted. FIG. 6 is an operation explanatory diagram of the joint of the single beam B of the main beam structure 10b for a working scaffold in the boiler furnace of the present invention.

＜作業足場用主梁構造＞
本発明の作業足場用主梁構造１０は、所定の剛性を維持するためにトラスを採用した梁本体２０及び継材６０を主な基本構成としている。 <Main beam structure for work scaffolding>
The main beam structure 10 for a working scaffold according to the present invention is mainly composed of a beam body 20 and a joint member 60 that employ a truss in order to maintain a predetermined rigidity.

梁本体２０は、ボイラ火炉１２の開口部１４から炉内の水管ノーズ部１６の下方に亘って掛け渡す長尺の主梁である。梁本体２０は、一対のＨ形鋼とトラス構造２６からなる。一対のＨ形鋼は、同一形状の第１Ｈ形鋼２２と第２Ｈ形鋼２４からなる。一対のＨ形鋼の間にはトラス構造２６を取り付けている。第１及び第２Ｈ形鋼２２，２４は、それぞれ第１フランジ２２ａ，２４ａと第２フランジ２２ｂ，２４ｂとその間のウェブ２２ｃ，２４ｃからなる。具体的な梁本体２０の形態は、第１Ｈ形鋼２２と第２Ｈ形鋼２４の第１フランジ２２ａ，２４ａ同士が対向するように上下に積層し、第１フランジ２２ａ，２４ａの間にトラス構造２６を設けている。換言すれば、ウェブ２２ｃ，２４ｃ同士を同一平面上に配置し第１Ｈ形鋼２２の第１フランジ２２ａの上面にトラス構造２６を載せて、トラス構造２６の上面に第２Ｈ形鋼２４の第１フランジ２４ａを積層させている。第１及び第２Ｈ形鋼２２，２４は断面方向に第１及び第２フランジとウェブに接触する補強板２８を設けている。梁本体２０の強度を高めるため、補強板２８は梁本体２０の長手方向に沿って複数等間隔に設けている。   The beam body 20 is a long main beam that spans from the opening 14 of the boiler furnace 12 to below the water tube nose 16 in the furnace. The beam main body 20 includes a pair of H-shaped steel and a truss structure 26. A pair of H-section steel consists of the 1st H section steel 22 and the 2nd H section steel 24 of the same shape. A truss structure 26 is attached between the pair of H-shaped steels. The first and second H-section steels 22 and 24 include first flanges 22a and 24a, second flanges 22b and 24b, and webs 22c and 24c therebetween, respectively. A specific form of the beam body 20 is such that the first flanges 22a and 24a of the first H-section steel 22 and the second H-section steel 24 are stacked vertically so that the first flanges 22a and 24a face each other, and a truss structure is formed between the first flanges 22a and 24a. 26 is provided. In other words, the webs 22 c and 24 c are arranged on the same plane, the truss structure 26 is placed on the upper surface of the first flange 22 a of the first H-section steel 22, and the first of the second H-section steel 24 is placed on the upper surface of the truss structure 26. The flange 24a is laminated. The first and second H-section steels 22 and 24 are provided with reinforcing plates 28 in contact with the first and second flanges and the web in the cross-sectional direction. In order to increase the strength of the beam body 20, a plurality of reinforcing plates 28 are provided at equal intervals along the longitudinal direction of the beam body 20.

梁本体２０は、図３，４に示すように複数分割（本実施形態では一例として５分割）した梁単体Ａ〜Ｅを、先端の梁本体Ａから搬送し、ついで梁本体Ｂ〜Ｅの順番で連結している。これによりボイラ火炉１２の建屋での収納や、搬送時の取り扱いを容易に行うことができる。また梁単体Ｂ，Ｃには、後述する継材６０がウェブのいずれか片側面１つ又は両側にそれぞれ１つずつ備えられている。梁単体Ｄには、継材６０がウェブのいずれか片側面に２つ又は両側にそれぞれ２つずつ備えられている。このような構成の梁単体Ｄの継材は、図２に示すように、作業者用開口部１８付近に設けられる通路を形成するためのものである。   3 and 4, the beam main body 20 conveys the single beams A to E divided into a plurality of parts (in this embodiment, as an example, five parts) from the beam main body A at the tip, and then the order of the beam main bodies B to E. It is connected with. Thereby, the storage in the building of the boiler furnace 12 and the handling at the time of conveyance can be performed easily. The single beams B and C are each provided with a joint material 60 to be described later, one on each side or both sides of the web. The single beam D is provided with two joint members 60 on one side of the web or two on each side. As shown in FIG. 2, the joint member of the single beam D having such a configuration is for forming a passage provided in the vicinity of the opening 18 for the worker.

各梁単体の連結には連結手段３０を用いている。連結手段３０は、梁単体の第１Ｈ形鋼２２同士、第２Ｈ形鋼２４同士を連結している。具体的な連結手段３０は、第１Ｈ形鋼２２同士の連結に、一対のプレート受け３２と、主梁接続プレート３４と、一対のキー溝付ピン３６と、キープレート３８を用いている。   A connecting means 30 is used to connect each beam alone. The connecting means 30 connects the first H-section steels 22 and the second H-section steels 24 of the single beam. The specific connecting means 30 uses a pair of plate receivers 32, a main beam connecting plate 34, a pair of key groove pins 36, and a key plate 38 for connecting the first H-section steels 22 to each other.

プレート受け３２は、高さがウェブの長さ（高さ）と略同等であり平面視で略矩形の一対のプレートであって、中心付近に後述するキー溝付ピン３６を挿入可能な２つのピン孔３２ａを設けている。そしてプレート受け３２は、ウェブ２２ｃを中心に第１フランジ２２ａと第２フランジ２２ｂのツバ間でウェブ２２ｃと平行に取り付けている。プレート受け３２とウェブ２２ｃの間には、後述する主梁接続プレート３４を挿入可能なプレート挿入穴３２ｂが形成される。プレート受け３２は後述するキープレート３８を固定する取付穴３２ｃを設けている。このようなプレート受け３２は、梁単体の第１Ｈ形鋼２２の両端に取り付けている。   The plate receiver 32 is a pair of plates whose height is substantially the same as the length (height) of the web and is substantially rectangular in a plan view. A pin hole 32a is provided. The plate receiver 32 is attached in parallel with the web 22c between the flanges of the first flange 22a and the second flange 22b with the web 22c as the center. A plate insertion hole 32b into which a later-described main beam connection plate 34 can be inserted is formed between the plate receiver 32 and the web 22c. The plate receiver 32 is provided with a mounting hole 32c for fixing a key plate 38 to be described later. Such plate receivers 32 are attached to both ends of the first H-section steel 22 as a single beam.

主梁接続プレート３４は、前記プレート挿入穴３２ｂに挿入可能な厚みと、プレート受け３２を２枚並べた長さに相当する長手方向の長さと、ウェブ２２ｃの長さ（高さ）と略同等の高さの略矩形の一対のプレートである。主梁接続プレート３４は、前記プレート挿入穴３２ｂに挿入した際に、ピン孔３２ａと対向する位置に４つの孔３４ａを設けている。   The main beam connection plate 34 has a thickness that can be inserted into the plate insertion hole 32b, a length in the longitudinal direction corresponding to a length in which two plate receivers 32 are arranged, and a length (height) of the web 22c. It is a pair of substantially rectangular plates with a height of. The main beam connection plate 34 is provided with four holes 34a at positions facing the pin holes 32a when inserted into the plate insertion holes 32b.

キー溝付ピン３６は、ピン孔３２ａ及び孔３４ａに挿入可能なピンであって、一端にツバ３６ａを形成し、他端側にキー溝３６ｂを形成している。キー溝付ピン３６は、ピン孔３２ａに挿入してツバ３６ａがプレート受け３２の一方のプレートに当接するとキー溝３６ｂが他方のプレートから突出する長さに設定されている。   The pin 36 with a key groove is a pin that can be inserted into the pin hole 32a and the hole 34a, and has a flange 36a at one end and a key groove 36b at the other end. The key groove pin 36 is set to such a length that the key groove 36b protrudes from the other plate when the flange 36a contacts one plate of the plate receiver 32 when inserted into the pin hole 32a.

キープレート３８は、プレート受け３２のプレートから突出したキー溝３６ｂに嵌合する一対の凹部３８ａを備えている。またキープレート３８は、プレート受け３２の取付穴３２ｃと対向する位置に取付孔３８ｂを設けている。   The key plate 38 includes a pair of recesses 38 a that fit into the key grooves 36 b protruding from the plate of the plate receiver 32. The key plate 38 is provided with an attachment hole 38 b at a position facing the attachment hole 32 c of the plate receiver 32.

また第２Ｈ形鋼２４同士の連結には、主梁接続プレート３４と、一対のプレート受け３３と、一対のピン４２と、一対のピン押えガイド４０を用いている。なお主梁接続プレート３４は、第１Ｈ形鋼２２の連結に用いたものと同様の形態である。   Further, the main beam connection plate 34, a pair of plate receivers 33, a pair of pins 42, and a pair of pin presser guides 40 are used to connect the second H-shaped steels 24. The main beam connection plate 34 has the same form as that used for coupling the first H-section steel 22.

プレート受け３３は、第１Ｈ形鋼２２の連結に用いるものと略同等の形態であり第２Ｈ形鋼２４にも適用可能であるが、取付穴３３ｃの位置が異なっている。プレート受け３３の取付穴３３ｃは、ピン孔３３ａを間に挟むように設けている。   The plate receiver 33 has substantially the same form as that used for connecting the first H-section steel 22 and can be applied to the second H-section steel 24, but the positions of the mounting holes 33c are different. The mounting holes 33c of the plate receiver 33 are provided so as to sandwich the pin holes 33a therebetween.

ピン４２は、ピン孔３３ａに挿入可能な直径であり、プレート受け３３の厚み、換言すると一対のプレートの外側同士の距離に相当する長さに設定されている。このようなピン４２は、プレート受け３３に挿入した際にプレート受け３３の主面から両端が突出しないように構成している。   The pin 42 has a diameter that can be inserted into the pin hole 33a, and is set to a thickness corresponding to the thickness of the plate receiver 33, in other words, the distance between the outsides of the pair of plates. Such a pin 42 is configured such that both ends thereof do not protrude from the main surface of the plate receiver 33 when inserted into the plate receiver 33.

ピン押えガイド４０は、外側からプレート受け３３のピン孔３３ａを閉塞して、プレート受け３３の両主面からＨ形鋼のフランジと平行に突出し、かつ梁本体２０の長手方向に延出したガイドである。具体的なピン押えガイド４０の形態は、ピン孔３３ａを覆う矩形プレートと、矩形プレートの主面からＨ形鋼のフランジと平行、換言すると矩形プレートから垂直に突出する突出プレートと、突出プレートの先端で梁本体２０の長手方向に沿って延出、換言すると矩形プレートと平行に延出した延出プレートからなる。このような構成のピン押えガイド４０は、後述するガイド５０と共に梁本体２０の長手方向に沿って連続的に形成することができる。ピン押えガイド４０には、プレート受け３３の取付穴３３ｃと対向する位置に取付孔４０ａを設けて、ボルトなどの締結手段を挿入してプレート受け３３に固定することができる。   The pin presser guide 40 closes the pin hole 33 a of the plate receiver 33 from the outside, protrudes in parallel with the H-shaped steel flange from both main surfaces of the plate receiver 33, and extends in the longitudinal direction of the beam body 20. It is. A specific form of the pin presser guide 40 includes a rectangular plate that covers the pin hole 33a, a protruding plate that protrudes parallel to the H-shaped steel flange from the main surface of the rectangular plate, in other words, a protruding plate that protrudes perpendicularly from the rectangular plate, It consists of an extended plate extending along the longitudinal direction of the beam body 20 at the tip, in other words, extending in parallel with the rectangular plate. The pin presser guide 40 having such a configuration can be formed continuously along the longitudinal direction of the beam body 20 together with the guide 50 described later. The pin presser guide 40 can be provided with a mounting hole 40a at a position facing the mounting hole 33c of the plate receiver 33, and can be fixed to the plate receiver 33 by inserting fastening means such as a bolt.

第２Ｈ形鋼２４のウェブ２４ｃの両主面にはガイド５０を取り付けている。
ガイド５０は、第２Ｈ形鋼２４のウェブ２４ｃの両主面からフランジと平行に突出し、かつ梁本体２０の長手方向に沿って延出させている。具体的なガイド５０の構成は、補強板２８に取り付けたガイド支持片５２に取り付けている。ガイド支持片５２は、補強板２８の中心からフランジと平行であって、ウェブ２４ｃから離れる方向に突出している。ガイド５０はガイド支持片５２の端面に、ウェブ２４ｃと平行、換言すれば梁本体２０の長手方向に沿って延出させている。本実施形態のガイド５０は、ウェブ２４ｃに対して、フランジよりも外側に突出させている。 Guides 50 are attached to both main surfaces of the web 24c of the second H-section steel 24.
The guide 50 protrudes in parallel with the flange from both main surfaces of the web 24 c of the second H-section steel 24 and extends along the longitudinal direction of the beam body 20. A specific configuration of the guide 50 is attached to a guide support piece 52 attached to the reinforcing plate 28. The guide support piece 52 is parallel to the flange from the center of the reinforcing plate 28 and protrudes away from the web 24c. The guide 50 extends on the end face of the guide support piece 52 in parallel with the web 24 c, in other words, along the longitudinal direction of the beam body 20. The guide 50 of this embodiment is protruded outside the flange with respect to the web 24c.

継材６０は、ボイラ火炉１２の開口部１４から同一方向に挿入された複数の作業足場用主梁構造１０同士を互いに長手方向と直交する方向に連結する連結部材である。本実施形態の継材６０は、梁本体２０と同様にトラス構造６２を採用し、トラス構造６２の四隅に長手方向に沿って延出した締結金具６３を設けている。締結金具６３にはボルト、ピンなどを挿入可能な孔６４を設けている。このような継材６０は、一端側を支持部６６、他端側を連結部６８としている。   The joint material 60 is a connecting member that connects a plurality of main beam structures 10 for work scaffolds inserted in the same direction from the opening 14 of the boiler furnace 12 in a direction perpendicular to the longitudinal direction. The joint member 60 of the present embodiment employs a truss structure 62 in the same manner as the beam main body 20, and is provided with fastening metal fittings 63 extending along the longitudinal direction at the four corners of the truss structure 62. The fastening fitting 63 is provided with a hole 64 into which a bolt, a pin or the like can be inserted. Such a joint material 60 has a support portion 66 on one end side and a connecting portion 68 on the other end side.

支持部６６は、梁本体２０の側面から長手方向と直交する方向に延出された上下一対の支持片６９に取り付けている。支持片６９は梁本体２０を中心として両側面に突出している。上下一対の支持片６９の間隔は、継材６０の縦方向（高さ方向）の長さと略同じ長さに設定している。また上下の支持片６９は、両端に平面視で孔６４と重なる位置に孔６９ａを設けている。支持片６９は、梁本体２０を中心とした場合の左右の突出長さがガイド５０の突出長さと略同じ長さか、それよりも短い長さに設定されている。支持部６６は、ボルトなどの締結手段を用いて支持片６９に取り付けている。継材６０は、このような支持部６６を支点として、梁本体２０の側面から梁本体２０の長手方向と交差する方向へ向けて扇状に開閉可能に形成されている。   The support portion 66 is attached to a pair of upper and lower support pieces 69 that extend from the side surface of the beam body 20 in a direction orthogonal to the longitudinal direction. The support piece 69 protrudes on both sides with the beam body 20 as the center. The distance between the pair of upper and lower support pieces 69 is set to be substantially the same as the length in the longitudinal direction (height direction) of the joint material 60. The upper and lower support pieces 69 are provided with holes 69a at both ends so as to overlap with the holes 64 in plan view. The support piece 69 is set such that the left and right protruding lengths with the beam body 20 as the center are substantially the same as or shorter than the protruding length of the guide 50. The support part 66 is attached to the support piece 69 using fastening means such as bolts. The joint member 60 is formed so as to be openable and closable in a fan shape from the side surface of the beam main body 20 toward the direction intersecting the longitudinal direction of the beam main body 20 with the support portion 66 as a fulcrum.

連結部６８は、隣接する他の梁本体２０の側面と連結可能としている。連結部６８は、梁本体２０の長手方向と直交する方向にある支持片６９の孔６９ａにピンなどの締結手段を用いて固定し、梁本体２０同士を連結することができる。
作業用主梁構造１０に継材を設ける構成は、ボイラ火炉の形態によって設計変更可能である。継材６０の取り付けは、一例として図２に示すように、作業足場用主梁構造１０ａには、継材を設けていない構成である。作業用主梁構造１０ｂは、開口部１４からボイラ火炉に向かってウェブの右側（片側）に継材６０を備えた構成である。作業用主梁構造１０ｃは、開口部１４からボイラ火炉に向かってウェブの左側（片側）に継材６０を備えた構成である。作業用主梁構造１０ｄは、ウェブの両側に継材６０を備えた構成である。 The connecting portion 68 can be connected to a side surface of another adjacent beam main body 20. The connecting portion 68 can be fixed to the hole 69a of the support piece 69 in a direction orthogonal to the longitudinal direction of the beam main body 20 by using a fastening means such as a pin, thereby connecting the beam main bodies 20 to each other.
The structure in which the joint material is provided in the work main beam structure 10 can be changed in design depending on the form of the boiler furnace. As shown in FIG. 2 as an example, the attachment of the joint material 60 is a configuration in which no joint material is provided in the main beam structure 10a for the work scaffold. The working main beam structure 10b is configured to include a joint 60 on the right side (one side) of the web from the opening 14 toward the boiler furnace. The working main beam structure 10c has a configuration in which a joint material 60 is provided on the left side (one side) of the web from the opening 14 toward the boiler furnace. The working main beam structure 10d has a configuration in which joint members 60 are provided on both sides of the web.

図３に示す作業足場用主梁構造１０ｄの梁単体Ｂ，Ｃの支持片６９は、梁本体２０を中心として両側に継材６０を１つずつ設けている。また梁単体Ｄの支持片６９は、梁本体２０を中心として両方に２つの継材６０を設けている。図４に示す作業足場用主梁構造１０ｂの梁単体Ｂ，Ｃの支持片６９は、梁本体２０を中心として一方に継材６０を設け、他方に孔６９ａに嵌合するピン６９ｂが設けられている。また梁単体Ｄの支持片６９は、梁本体２０を中心として片側に継材６０を２つずつ設けている。   The support pieces 69 of the single beams B and C of the main beam structure 10d for work scaffold shown in FIG. 3 are provided with one joint 60 on each side with the beam main body 20 at the center. Further, the support piece 69 of the single beam D is provided with two joint members 60 on both sides of the beam main body 20. The support piece 69 of the single beam B, C of the main beam structure 10b for work scaffold shown in FIG. 4 is provided with a joint member 60 on one side around the beam main body 20, and a pin 69b that fits into the hole 69a on the other side. ing. Further, the support piece 69 of the single beam D is provided with two joint members 60 on one side with the beam body 20 as the center.

図８は本発明のボイラ火炉内の作業足場用主梁構造の吊り具、吊ロッドの説明図である。
梁本体２０の先端に位置する梁単体Ａには吊り具７０を設けている。吊り具７０は、第１吊金物７２と第２吊金物７４からなり、互いにピン結合している。第１吊金物７２は、後述する水管ノーズ部の吊ロッド８０に接続可能な孔７３を設けている。第２吊金物７４は、第１吊金物７２よりも長尺の金物であって、長孔７５が形成されている。長孔７５には梁単体Ａに設けられたピンが貫通している。吊り具７０は、梁単体Ａの先端に設けられた上面から上下方向に開口し、かつ上面から水平に開口した逆Ｌ字形の収納穴７６に収納されている。長孔７５に貫通するピンは、収納穴７６の屈曲付近に設けられている。 FIG. 8 is an explanatory view of a hanging tool and a hanging rod having a main beam structure for a working scaffold in the boiler furnace of the present invention.
A lifting tool 70 is provided on the single beam A located at the tip of the beam main body 20. The hanger 70 includes a first hanger 72 and a second hanger 74, and is pin-coupled to each other. The first hanger 72 is provided with a hole 73 that can be connected to a hanger rod 80 of a water tube nose portion described later. The second hanger 74 is a longer metal than the first hanger 72 and has a long hole 75 formed therein. A pin provided in the single beam A passes through the long hole 75. The lifting tool 70 is accommodated in an inverted L-shaped accommodation hole 76 that opens in the vertical direction from the upper surface provided at the tip of the single beam A and opens horizontally from the upper surface. The pin that penetrates the long hole 75 is provided in the vicinity of the bending of the storage hole 76.

吊ロッド８０は、梁本体２０の吊り具７０と係合することによって、片持ち支持されて先端が下方に垂下した梁本体２０を上方へ引き上げて水平方向に配置可能なロッドである。吊ロッド８０は、吊り具７０の上方となる水管ノーズ部１６の内部に設けられている。吊ロッド８０と吊り具７０の間となる水管ノーズ部１６の下面には、開口部１４ａが形成されている。吊ロッド８０は水管ノーズ部１６の内部に設けられたサポート梁１９のナット１９ａと垂直方向に螺合するロッドである。吊ロッド８０の下端には、第１吊金物７２の孔７３に重ねて締結手段を挿入して係合する孔８０ａが設けられている。この開口部１４ａから吊り具７０と吊ロッド８０を係合させることができる。   The suspension rod 80 is a rod that can be arranged in the horizontal direction by engaging the suspension tool 70 of the beam body 20 and pulling up the beam body 20 that is cantilevered and whose tip hangs downward. The suspension rod 80 is provided inside the water tube nose portion 16 above the suspension tool 70. An opening 14 a is formed on the lower surface of the water tube nose portion 16 between the suspension rod 80 and the suspension tool 70. The suspension rod 80 is a rod that is screwed in the vertical direction with the nut 19 a of the support beam 19 provided inside the water tube nose portion 16. At the lower end of the suspension rod 80, a hole 80 a is provided that engages by inserting a fastening means over the hole 73 of the first hanging object 72. The hanging tool 70 and the hanging rod 80 can be engaged from the opening 14a.

このような構成の吊り具７０は、図８（Ａ）に示すように。収容時に収納穴７６の上下方向の穴に第２吊金物７４が収まり、横方向の穴に第２吊金物７４から直角に折れ曲がった第１吊金物７２が収まっている。   As shown in FIG. 8A, the hanger 70 having such a configuration is shown. The second hanging object 74 is accommodated in the vertical hole of the accommodation hole 76 during the accommodation, and the first hanging object 72 bent at a right angle from the second hanging object 74 is accommodated in the lateral hole.

図８（Ｂ）に示すように、吊ロッド８０との係合は、まず水管ノーズ部１６の開口部１４ａから下方の第１吊金物７２の孔にワイヤを通して上方へ引張り第１吊金物７２を起こす。そして第２吊金物７４の長手方向に引張り第２吊金物７４を引き上げる。第１吊金物７２の孔７３と吊ロッド８０の孔８０ａの中心を一致させて締結手段を用いて係合させる（図８（Ｃ））。サポート梁１９のナット１９ａを増し締めして下方に垂下した梁本体２０を引き上げて定位置、換言すれば水平に配置する。   As shown in FIG. 8B, the engagement with the suspension rod 80 is performed by first pulling the first suspension 72 upward through a wire from the opening 14a of the water tube nose portion 16 into the hole of the first suspension 72 below. Wake up. Then, the second hanging object 74 is pulled in the longitudinal direction of the second hanging object 74 and pulled up. The center of the hole 73 of the first hanging object 72 and the center of the hole 80a of the hanging rod 80 are made to coincide with each other using the fastening means (FIG. 8C). The nut 19a of the support beam 19 is tightened and the beam body 20 suspended downward is pulled up and placed in a fixed position, in other words, horizontally.

＜作業足場用主梁搬送装置＞
次に本発明の作業足場用主梁搬送装置１００について以下説明する。図９は本発明の作業足場用主梁搬送装置の斜視図である。図１０は本発明の作業足場用主梁搬送装置の側面図である。図１１は本発明の作業足場用主梁搬送装置の平面図である。図１２は図１０のＡ−Ａ矢視図である。図１３は図１０のＢ−Ｂ矢視図である。図１４は図１０のＣ−Ｃ矢視図である。なお図１２〜１４は、いずれも梁単体Ｄ（片側に２本の継材を備えた構成）を１点破線で追記している。 <Main beam conveyor for work scaffolding>
Next, the main beam conveying apparatus 100 for working scaffolds of this invention is demonstrated below. FIG. 9 is a perspective view of the main beam conveying device for a working scaffold according to the present invention. FIG. 10 is a side view of the main beam conveying device for a working scaffold according to the present invention. FIG. 11 is a plan view of the main beam conveying device for a working scaffold according to the present invention. FIG. 12 is an AA arrow view of FIG. 13 is a view taken in the direction of arrows BB in FIG. 14 is a view taken along the line CC of FIG. In each of FIGS. 12 to 14, a single beam D (a configuration including two joint members on one side) is additionally written with a one-dot broken line.

作業足場用主梁搬送装置１００は、作業足場用主梁構造１０を載置可能として、ボイラ火炉１２の開口部１４から火炉内へ梁本体２０の長手方向に沿って搬送可能なローラ本体１２０と、ローラ本体１２０のローラ面から梁本体２０の載置側へ立設して前記梁本体を囲む枠体１３０と、を備えている。   The working scaffold main beam conveying device 100 is capable of placing the working scaffold main beam structure 10, and includes a roller main body 120 capable of conveying the beam main body 20 from the opening 14 of the boiler furnace 12 into the furnace along the longitudinal direction of the beam main body 20. , And a frame body 130 that stands from the roller surface of the roller body 120 to the mounting side of the beam body 20 and surrounds the beam body.

ローラ本体１２０は、２本のチャンネルの間に複数の送り出しローラ１２２を所定間隔で直線状に配置している。送り出しローラ１２２は自由回転可能とし、モータなどの駆動源を備えていない。また開口部側の送り出しローラ１２４は、他の送り出しローラ１２２よりも直径を大きくし、ベアリング機構を備えた構成としている。このようなローラ本体１２０は、梁本体２０の底面に複数の送り出しローラ１２２，１２４が接触して、長手方向に沿って搬送することができる。   In the roller main body 120, a plurality of delivery rollers 122 are linearly arranged at predetermined intervals between two channels. The feed roller 122 is freely rotatable and does not include a drive source such as a motor. Further, the delivery roller 124 on the opening side has a diameter larger than that of the other delivery rollers 122 and is provided with a bearing mechanism. Such a roller body 120 can be conveyed along the longitudinal direction with a plurality of delivery rollers 122 and 124 contacting the bottom surface of the beam body 20.

枠体１３０は、ローラ本体１２０の開口部側で、梁本体２０をアーチ状に囲むように梁本体２０の載置面から垂直方向に立設させている。実施形態の枠体１３０は、第１枠体１３２と第２枠体１３４とからなる。   The frame body 130 is erected in the vertical direction from the mounting surface of the beam body 20 so as to surround the beam body 20 in an arch shape on the opening side of the roller body 120. The frame body 130 of the embodiment includes a first frame body 132 and a second frame body 134.

第１枠体１３２は、ローラ本体１２０の開口部側の端部に設けている。第１枠体１３２には、第１ガイドローラ１３６と第２ガイドローラ１３８を取り付けている。   The first frame 132 is provided at the end of the roller body 120 on the opening side. A first guide roller 136 and a second guide roller 138 are attached to the first frame 132.

第１ガイドローラ１３６は、第１枠体１３２の上方で間の梁本体２０を挟むよう取り付けている。第１ガイドローラ１３６は、梁本体２０の第２Ｈ形鋼２４のガイド５０の両側面と接触する一対のローラである。   The first guide roller 136 is attached above the first frame 132 so as to sandwich the beam main body 20 therebetween. The first guide rollers 136 are a pair of rollers that come into contact with both side surfaces of the guide 50 of the second H-section steel 24 of the beam body 20.

第２ガイドローラ１３８は、第１枠体１３２の下方で間の梁本体２０を挟むよう取り付けている。第２ガイドローラ１３８は、梁本体２０の第１Ｈ形鋼２２の第２フランジ２２ｂの両側面と接触する一対のローラである。このような構成の第１及び第２ガイドローラ１３６，１３８によれば、梁本体２０の搬送方向に対する横揺れを防止して梁本体２０をボイラ火炉内へ向かって真直ぐに搬送することができる。   The second guide roller 138 is attached below the first frame 132 so as to sandwich the beam main body 20 therebetween. The second guide rollers 138 are a pair of rollers that come into contact with both side surfaces of the second flange 22 b of the first H-section steel 22 of the beam body 20. According to the first and second guide rollers 136 and 138 having such a configuration, the beam body 20 can be conveyed straight into the boiler furnace while preventing the beam body 20 from rolling in the conveyance direction.

第２枠体１３４は、ローラ本体１２０の中心から開口部側に設けている。第２枠体１３４には、上部送り出しローラ１４０と、搬送部１５０と、把持部１６０を取り付けている。   The second frame 134 is provided on the opening side from the center of the roller body 120. An upper feed roller 140, a transport unit 150, and a grip unit 160 are attached to the second frame 134.

上部送り出しローラ１４０は、第２枠体１３４の上部で、梁本体２０の第２Ｈ形鋼２４の第２フランジ２４ｂ上面と接触するローラである。上部送り出しローラ１４０は、自由回転可能とし、モータなどの駆動源を備えていない。また開口部側の送り出しローラ１２４と同様に他の送り出しローラ１２２よりも直径を大きくし、ベアリング機構を備えた構成としている。   The upper feed roller 140 is a roller that is in contact with the upper surface of the second flange 24 b of the second H-section steel 24 of the beam body 20 at the upper part of the second frame 134. The upper feed roller 140 is freely rotatable and does not include a drive source such as a motor. Further, like the delivery roller 124 on the opening side, the diameter is made larger than that of the other delivery rollers 122 and a bearing mechanism is provided.

搬送部１５０は、第２枠体１３４の上部から第１枠体１３２側へ向けて水平方向に延出した油圧シリンダ機構である。搬送部１５０は、油圧シリンダ１５２と、ピストンロッド１５４からなり、油圧シリンダ１５２は端部を第２枠体１３４の上部に取り付けている。ピストンロッド１５４は油圧シリンダ１５２内を往復運動可能とし、先端に後述する把持部１６０が取り付けられている。このような構成の搬送部１５０は、油圧源（不図示）の油圧が油圧シリンダ１５２に供給されてピストンロッド１５４の伸縮により把持部１６０を梁本体２０の長手方向に沿って進退移動可能な構成としている。   The conveyance unit 150 is a hydraulic cylinder mechanism that extends in the horizontal direction from the upper part of the second frame 134 toward the first frame 132 side. The conveyance unit 150 includes a hydraulic cylinder 152 and a piston rod 154, and the hydraulic cylinder 152 has an end attached to the upper part of the second frame 134. The piston rod 154 can reciprocate in the hydraulic cylinder 152, and a gripping portion 160 described later is attached to the tip. The conveyance unit 150 having such a configuration is configured such that the hydraulic pressure of a hydraulic source (not shown) is supplied to the hydraulic cylinder 152 and the gripping unit 160 can be moved back and forth along the longitudinal direction of the beam body 20 by expansion and contraction of the piston rod 154. It is said.

図１５は把持部の説明図であり、（Ａ）は平面図、（Ｂ）は側面図、（Ｃ）は（Ａ）の開放状態のＤ−Ｄ矢視図、（Ｄ）は（Ａ）の把持状態のＤ−Ｄ矢視図である。梁単体Ｂ，ＣあるいはＥを把持した例を示している。把持部１６０は、クランプ板１６２と、クランプジャッキ１６４と、クランプアーム１６６と、走行ローラ１６８を備えている。   FIGS. 15A and 15B are explanatory views of the gripping portion, where FIG. 15A is a plan view, FIG. 15B is a side view, FIG. 15C is a view taken along line DD in the open state of FIG. It is a DD arrow line view of a holding state. An example in which a single beam B, C, or E is gripped is shown. The gripping unit 160 includes a clamp plate 162, a clamp jack 164, a clamp arm 166, and a traveling roller 168.

クランプ板１６２は、第２Ｈ形鋼２４の第２フランジ２４ｂの一方の主面（上面）側に配置する平面視で略矩形のプレートである。クランプ板１６２の上面には一対のクランプジャッキ１６４と、クランプジャッキ１６４に接続する油圧経路が取り付けられている。   The clamp plate 162 is a substantially rectangular plate in a plan view arranged on one main surface (upper surface) side of the second flange 24 b of the second H-section steel 24. A pair of clamp jacks 164 and a hydraulic path connected to the clamp jack 164 are attached to the upper surface of the clamp plate 162.

梁本体２０の長手方向と並行なクランプ板１６２の辺には一対の切り欠きがあり、この切り欠きにはクランプアーム１６６が取り付けられている。クランプアーム１６６は、断面視でコ字形の形状であり、対向する辺のいずれか一方の辺がクランプジャッキ１６４の可動部に接続し、他方の辺がクランプ板１６２の他方の主面（下面）と所定間隔を開けて対向している。本実施形態の梁本体２０は、クランプ板の下面とクランプアーム１６６の他方の辺の間に第２Ｈ形鋼２４の第２フランジ２４ｂを挟んだ状態で搬送される。   There is a pair of notches on the side of the clamp plate 162 parallel to the longitudinal direction of the beam body 20, and a clamp arm 166 is attached to the notches. The clamp arm 166 has a U-shape when viewed in cross section, and one of the opposing sides is connected to the movable portion of the clamp jack 164, and the other side is the other main surface (lower surface) of the clamp plate 162. And facing each other with a predetermined interval. The beam main body 20 of this embodiment is conveyed in a state where the second flange 24b of the second H-section steel 24 is sandwiched between the lower surface of the clamp plate and the other side of the clamp arm 166.

図１５（Ｃ）に示すように、油圧源（不図示）からの油圧が供給されてクランプジャッキ１６４が縮小すると、クランプアーム１６６が下方（ローラ本体１２０へ近づく方向）へ移動し、クランプ板１６２との間が大きくなり、第２Ｈ形鋼２４の第２フランジ２４ｂの両主面を開放することができる。   As shown in FIG. 15C, when the hydraulic pressure from a hydraulic pressure source (not shown) is supplied and the clamp jack 164 contracts, the clamp arm 166 moves downward (in the direction approaching the roller main body 120), and the clamp plate 162 , And the two main surfaces of the second flange 24b of the second H-section steel 24 can be opened.

一方、図１５（Ｄ）に示すように、油圧源（不図示）からの油圧が供給されてクランプジャッキ１６４が伸長すると、クランプアーム１６６が上方（ローラ本体１２０から離れる方向）へ移動し、クランプ板１６２との間が小さくなり第２Ｈ形鋼２４の第２フランジ２４ｂの両主面を把持することができる。
走行ローラ１６８は、梁本体２０の長手方向と交差する方向のクランプ板１６２の辺にそれぞれ４つ取り付けられている。走行ローラ１６８は、第２Ｈ形鋼２４の第２フランジ２４ｂの上面と接触して把持部１６０を梁本体２０の上で支持することができる。 On the other hand, as shown in FIG. 15D, when the hydraulic pressure from a hydraulic pressure source (not shown) is supplied and the clamp jack 164 extends, the clamp arm 166 moves upward (in the direction away from the roller main body 120), and the clamp The space between the plate 162 is reduced, and both main surfaces of the second flange 24b of the second H-section steel 24 can be gripped.
Four traveling rollers 168 are attached to each side of the clamp plate 162 in a direction intersecting the longitudinal direction of the beam body 20. The traveling roller 168 can contact the upper surface of the second flange 24 b of the second H-section steel 24 and support the grip 160 on the beam body 20.

上記構成によるボイラ火炉内の作業足場用主梁構造及び作業足場用主梁搬送装置の作用について以下説明する。
図７は本発明のボイラ火炉内の作業足場用主梁構造の送り出しの説明図である。 The operation of the main beam structure for the working scaffold and the main beam conveying device for the working scaffold in the boiler furnace having the above configuration will be described below.
FIG. 7 is an explanatory view of delivery of the main beam structure for a working scaffold in the boiler furnace of the present invention.

図７（Ａ）に示すように、クレーンを用いて梁単体Ａを作業足場用主梁搬送装置１００のローラ本体１２０上に載置する。そして梁単体Ａを開口部１４側へ押し出してスペースを開ける。ついでクレーンを用いて梁単体Ｂをローラ本体１２０上に載置する。梁単体Ａと梁単体Ｂは連結手段３０を用いて連結している。あらかじめ梁単体Ａには、プレート受け３２，３３と主梁接続プレート３４が取り付けられている。また梁単体Ｂには、プレート受け３２，３３が取り付けられている。そして、梁単体Ａの主梁接続プレート３４を梁単体Ｂのプレート受け３２，３３に挿入する。梁単体Ｂの上部のプレート受け３３のピン孔３２ａにピン４２を挿入し、ついでピン押えガイド４０をプレート受け３３の外側からピン孔３２ａを閉塞して、取付穴３３ｃに締結手段を挿入して固定する。これにより、ピン押えガイド４０は、ガイド５０と共に梁本体２０の長手方向に沿って連続的に形成することができる。梁単体Ｂの下部のプレート受け３２のピン孔３２ａには、キー溝付ピン３６を挿入し、ついでキープレート３８の凹部をキー溝３６ｂに嵌合させる。そして、取付孔３８ｂに締結手段を挿入して固定する。   As shown in FIG. 7A, the single beam A is placed on the roller main body 120 of the main scaffold conveying apparatus 100 for work scaffolds using a crane. Then, the beam A is pushed out toward the opening 14 to open a space. Next, the single beam B is placed on the roller body 120 using a crane. The single beam A and the single beam B are connected using a connecting means 30. The plate receivers 32 and 33 and the main beam connection plate 34 are attached to the single beam A in advance. Further, plate receivers 32 and 33 are attached to the single beam B. Then, the main beam connection plate 34 of the single beam A is inserted into the plate receivers 32 and 33 of the single beam B. The pin 42 is inserted into the pin hole 32a of the plate receiver 33 at the upper part of the single beam B, and then the pin presser guide 40 is closed from the outside of the plate receiver 33, and the fastening means is inserted into the mounting hole 33c. Fix it. Thereby, the pin presser guide 40 can be continuously formed along the longitudinal direction of the beam body 20 together with the guide 50. A pin 36 with a key groove is inserted into the pin hole 32a of the lower plate receiver 32 of the single beam B, and then the recess of the key plate 38 is fitted into the key groove 36b. And a fastening means is inserted and fixed to the attachment hole 38b.

連結された梁単体Ａ及び梁単体Ｂは、把持部１６０で第２Ｈ形鋼２４の第２フランジ２４ｂを把持しながら、搬送部１５０で開口部１４側へ搬送し、開口部１４から梁単体Ａを火炉内へ挿入する。
図７（Ｂ）〜（Ｄ）についても同様に、クレーンを用いて梁単体Ｃ〜梁単体Ｅを搬送装置のローラ本体１２０の上に載置する。そして連結手段３０を用いて連結し、搬送しながら梁本体２０を形成する。 The connected single beam A and single beam B are conveyed to the opening 14 side by the conveying unit 150 while holding the second flange 24b of the second H-shaped steel 24 by the holding unit 160, and the single beam A from the opening 14 is conveyed. Is inserted into the furnace.
Similarly, in FIGS. 7B to 7D, the single beam C to the single beam E are placed on the roller body 120 of the transport device using a crane. And it connects using the connection means 30, and the beam main body 20 is formed, conveying.

図７（Ｅ）に示すように、梁単体Ｅのフランジを把持部１６０で把持しながら搬送すると梁単体Ａの先端が水管ノーズ部１６の開口部１４ａの下方に位置する。このとき、作業足場用主梁搬送装置１００で片持ち支持された梁本体２０は、自重により先端側が垂下している。   As shown in FIG. 7E, when the flange of the beam E is conveyed while being held by the holding portion 160, the tip of the beam A is positioned below the opening 14a of the water tube nose portion 16. At this time, the front end side of the beam main body 20 that is cantilevered by the main beam conveying device for work scaffold 100 is suspended by its own weight.

図７（Ｆ）に示すように、水管ノーズ部１６の開口部１４ａを開放する。開口部１４ａから下方の第１吊金物７２の孔にワイヤを通して上方へ引張り第１吊金物７２を起伏させる。そして第２吊金物７４の長手方向に引き上げて第２吊金物７４を引き上げる。第１吊金物７２の孔と吊ロッド８０の孔の中心を一致させて締結手段を用いて係合させる。サポート梁１９のナット１９ａを増し締めして下方に垂下した作業足場用主梁構造１０を引き上げて定位置、換言すれば水平方向に配置する。これにより、作業足場用主梁構造１０は、先端側（梁単体Ａ）を水管ノーズ部１６の吊ロッド８０に係合し、末端側（梁単体Ｅ）を把持部１６０で把持して、火炉内で固定することができる。   As shown in FIG. 7 (F), the opening 14a of the water tube nose 16 is opened. The first hanging object 72 is raised and lowered by pulling it upward through the wire from the opening 14a into the hole of the first hanging object 72 below. Then, the second hanging object 74 is pulled up by pulling up in the longitudinal direction of the second hanging object 74. The center of the hole of the 1st hanging object 72 and the hole of the hanging rod 80 is made to correspond, and it is engaged using a fastening means. The main beam structure 10 for working scaffolds, which is tightened by tightening the nut 19a of the support beam 19 and hanging downward, is pulled up and placed in a fixed position, in other words, in the horizontal direction. As a result, the main beam structure 10 for the working scaffold is engaged with the suspension rod 80 of the water tube nose portion 16 at the distal end side (the single beam A) and is gripped by the grip portion 160 at the distal end (the single beam E). Can be fixed within.

図１６〜１８は作業足場の設置方法の説明図である。作業足場用主梁構造１０ａ，１０ｂを作業者用開口部１８があるボイラ火炉１２の側面側（一端）から挿入する（図１６（Ａ））。そして、作業者用開口部１８付近の作業足場用主梁構造１０ｂの継材６０を梁本体２０の長手方向と交差する方向へ扇状に開放し、隣接する作業足場用主梁構造１０ａの梁本体２０の支持片６９の孔６９ａに締結手段を用いて固定する。そして、継材６０の上に作業者用開口部１８から搬入した足場板１７０を載置して作業者用の通路を形成する。   16-18 is explanatory drawing of the installation method of a working scaffold. The main beam structures 10a and 10b for working scaffolds are inserted from the side surface side (one end) of the boiler furnace 12 having the worker opening 18 (FIG. 16A). Then, the joint material 60 of the work scaffold main beam structure 10b near the worker opening 18 is opened in a fan shape in a direction intersecting the longitudinal direction of the beam main body 20, and the beam main body of the adjacent work scaffold main beam structure 10a. It fixes to the hole 69a of 20 support pieces 69 using a fastening means. And the scaffold board | plate 170 carried in from the opening part 18 for workers on the joint material 60 is mounted, and the channel | path for workers is formed.

次に、図１６（Ｂ）に示すように、張出し梁１７２を作業足場用主梁構造１０ａ及び１０ｂを跨ぐと共に、一端がボイラ火炉１２の壁面側へ突出するように配置する。作業者用開口部１８から搬入した足場板１７０を作業足場用主梁１０ａ及び１０ｂの間と、作業足場用主梁１０ａ及びボイラ火炉の壁面の間に載置して固定する。またもう一方の作業者用開口部１８があるボイラ火炉１２の側面側（他端）から作業足場用主梁構造１０ａ，１０ｃを挿入して、作業者用開口部１８付近の作業足場用主梁構造１０ｃの継材６０を梁本体２０の長手方向と交差する方向へ扇状に開放し、隣接する作業足場用主梁構造１０ａの梁本体２０の支持片６９の孔６９ａに締結手段を用いて固定し、足場板１７０を載置して作業者用の通路を形成する。   Next, as shown in FIG. 16 (B), the overhanging beam 172 is disposed so as to straddle the main scaffolding structures 10a and 10b for work scaffolding and one end protrudes toward the wall surface side of the boiler furnace 12. The scaffold plate 170 carried in from the worker opening 18 is placed and fixed between the main scaffold beams 10a and 10b and between the main scaffold beam 10a and the wall of the boiler furnace. The main beam structure 10a, 10c for work scaffolds is inserted from the side (the other end) of the boiler furnace 12 where the other worker opening 18 is provided, and the work scaffold main beam near the worker opening 18 is inserted. The joint member 60 of the structure 10c is opened in a fan shape in a direction intersecting the longitudinal direction of the beam body 20, and is fixed to the hole 69a of the support piece 69 of the beam body 20 of the adjacent main beam structure 10a for work scaffolding by using fastening means. Then, the scaffolding plate 170 is placed to form a passage for the worker.

図１６（Ｃ）に示すように、足場板１７０を載置する作業と並行して、作業足場用主梁構造１０ｂ及び１０ｄを挿入し、作業者用の通路を形成する工程を行う。
このような作業を平面視で水管ノーズ部１６の先端と重なる位置まで行なう（図１６（Ｄ））。 As shown in FIG. 16 (C), in parallel with the work of placing the scaffolding plate 170, the work scaffold main beam structures 10b and 10d are inserted to form a passage for the worker.
Such an operation is performed up to a position overlapping the tip of the water tube nose portion 16 in plan view (FIG. 16D).

次に、図１７（Ａ）に示すように、枠状の吊り足場１７６を形成する箇所となる作業足場を枠状に囲う箇所の足場板１７０を撤去して開口を形成する（同図中の×印箇所）。
そして図１７（Ｂ）に示すように、作業足場の上面に仮置きした吊り足場１７６を開口から下方へ挿入する。
水管ノーズ１６の下方に配置する吊り足場１７６ａは、まず、水管ノーズ部１６の先端側で、作業足場の下方へ挿入した後、枠状の吊り足場支持梁１７４で支持させる。 Next, as shown in FIG. 17 (A), the scaffold plate 170 at the location surrounding the work scaffold that forms the frame-shaped suspension scaffold 176 is removed to form an opening (in FIG. 17A). X mark).
Then, as shown in FIG. 17B, the suspended scaffold 176 temporarily placed on the upper surface of the work scaffold is inserted downward from the opening.
The suspension scaffold 176a disposed below the water tube nose 16 is first inserted below the work scaffold at the distal end side of the water tube nose portion 16, and then supported by a frame-shaped suspension scaffold support beam 174.

図１７（Ｃ）に示すように、吊り足場支持梁１７４で支持した吊り足場１７６ａを水管ノーズ部１６の下方の梁単体Ａまでスライド移動させる。
図１８に示すように、吊り足場１７６同士を足場板１７０で連結すると、作業足場の作業エリアよりも下面に、作業足場を枠状に囲む吊り足場１７６が形成される。このような吊り足場１７６の構成により、水管ノーズ部１６の下面などのエリアについても点検作用を行うことができる。 As shown in FIG. 17C, the suspension scaffold 176 a supported by the suspension scaffold support beam 174 is slid to the single beam A below the water tube nose portion 16.
As shown in FIG. 18, when the suspended scaffolds 176 are connected to each other by a scaffold plate 170, a suspended scaffold 176 that surrounds the work scaffold in a frame shape is formed below the work area of the work scaffold. With such a configuration of the suspension scaffold 176, an inspection operation can be performed on an area such as the lower surface of the water pipe nose portion 16.

このような本発明の作業足場用主梁構造によれば、トラス構造の梁本体の側面から扇状に開閉可能とし、隣接する梁本体に連結可能な継材を取り付けているので、所定の剛性を備えた梁本体の搬送形態を簡易化でき、かつ作業足場用の梁を容易かつ短工程で形成することができる。   According to such a main beam structure for a working scaffold of the present invention, since it can be opened and closed in a fan shape from the side surface of the beam body of the truss structure and a joint material that can be connected to the adjacent beam body is attached, a predetermined rigidity is provided. It is possible to simplify the conveying form of the provided beam main body, and to form a beam for a work scaffold easily and in a short process.

また本発明の作業足場用主梁搬送装置によれば、把持部で梁本体のＨ形鋼のフランジを把持しながら搬送しているので、梁本体の側面に継材のような付帯物、トラス構造などのような凹凸があっても梁本体を片持ち支持した状態で搬送することができる。   Further, according to the main beam conveying device for a working scaffold of the present invention, since the conveying portion is conveyed while grasping the H-shaped steel flange of the beam body, an accessory such as a joint material or truss is provided on the side surface of the beam body. Even if there are irregularities such as structures, the beam body can be transported in a cantilevered state.

１０………ボイラ火炉内の作業足場用主梁構造、１２………ボイラ火炉、１４，１４ａ………開口部、１６………水管ノーズ部、１８………作業者用開口部、１９………サポート梁、１９ａ………ナット、２０………梁本体、２２………第１Ｈ形鋼、２２ａ………第１フランジ、２２ｂ………第２フランジ、２２ｃ………ウェブ、２４………第２Ｈ形鋼、２４ａ………第１フランジ、２４ｂ………第２フランジ、２４ｃ………ウェブ、２６………トラス構造、２８………補強板、３０………連結手段、３２，３３………プレート受け、３２ａ，３３ａ………ピン孔、３２ｂ………プレート挿入穴、３２ｃ，３３ｃ………取付穴、３４………主梁接続プレート、３４ａ………孔、３６………キー溝付ピン、３６ａ………ツバ、３６ｂ………キー溝、３８………キープレート、３８ａ………凹部、３８ｂ………取付孔、４０………ピン押えガイド、４０ａ………取付孔、４２………ピン、５０………ガイド、５２………ガイド支持片、６０………継材、６２………トラス構造、６３………締結金具、６４………孔、６６………支持部、６８………連結部、６９………支持片、６９ａ………孔、６９ｂ………ピン、７０………吊り具、７２………第１吊金物、７３………孔、７４………第２吊金物、７５………長孔、７６………収納穴、８０………吊ロッド、８０ａ………孔、１００………作業足場用主梁搬送装置、１２０………ローラ本体、１２２，１２４………送り出しローラ、１３０………枠体、１３２………第１枠体、１３４………第２枠体、１３６………第１ガイドローラ、１３８………第２ガイドローラ、１４０………上部送り出しローラ、１５０………搬送部、１５２………油圧シリンダ、１５４………ピストンロッド、１６０………把持部、１６２………クランプ板、１６４………クランプジャッキ、１６６………クランプアーム、１６８………走行ローラ、１７０………足場板、１７２………張出し梁、１７４………吊り足場支持梁、１７６，１７６ａ………吊り足場。   10 ......... Main beam structure for working scaffold in boiler furnace, 12 ......... Boiler furnace, 14, 14a ......... Opening part, 16 ......... Water pipe nose part, 18 ......... Worker opening part, 19 ......... Support beam, 19a ......... Nut, 20 ......... Body body, 22 ......... First H section steel, 22a ......... First flange, 22b ......... Second flange, 22c ......... Web, 24 ......... 2H section steel, 24a ......... first flange, 24b ......... second flange, 24c ...... web, 26 ......... truss structure, 28 ......... reinforcement plate, 30 ......... connection Means, 32, 33 ......... Plate holder, 32a, 33a ......... Pin hole, 32b ......... Plate insertion hole, 32c, 33c ......... Mounting hole, 34 ......... Main beam connection plate, 34a ......... Hole, 36 ......... Key groove pin, 36a ......... Flange, 36b ......... Key 38 ......... Key plate, 38a ......... Recess, 38b ......... Mounting hole, 40 ......... Pin presser guide, 40a ......... Mounting hole, 42 ......... Pin, 50 ......... Guide, 52 ... ...... Guide support piece, 60... Joint, 62... Truss structure, 63 .. Fastening bracket, 64... Hole, 66... Support part, 68. ... Supporting piece, 69a ......... Hole, 69b ......... Pin, 70 ......... Hanger, 72 ......... First hanging object, 73 ......... Hole, 74 ...... Second hanging object, 75 ... ... Elongated hole, 76 ......... Housing hole, 80 ......... Hanging rod, 80a ......... Hole, 100 ......... Main beam conveyor for working scaffold, 120 ......... Roller body, 122,124 ......... Sending out Roller 130 ......... Frame body 132 ......... First frame body 134 ......... Second frame body 136 ......... First guide roller 1 8 ......... Second guide roller, 140 ......... Upper feed roller, 150 ......... Conveying section, 152 ......... Hydraulic cylinder, 154 ......... Piston rod, 160 ......... Holding section, 162 ......... Clamp Plates, 164... Clamp jacks, 166... Clamp arms, 168. ...... Suspended scaffolding.

Claims (8)

一対のＨ形鋼の一方のフランジ同士が対向するように上下に積層し、前記フランジの間にトラス構造を設けた梁本体と、
一端が前記梁本体の側面に支持されて前記一端を支点として前記梁本体の側面から前記梁本体の長手方向と交差する方向へ向けて扇状に開閉可能とし、他端が隣接する他の前記梁本体の側面と連結可能な継材と、
を備えたことを特徴とするボイラ火炉内の作業足場用主梁構造。 A beam body laminated vertically so that one flange of a pair of H-shaped steel faces each other, and a truss structure provided between the flanges;
One end is supported by the side surface of the beam body, and can be opened and closed in a fan shape from the side surface of the beam body to the direction intersecting the longitudinal direction of the beam body with the one end as a fulcrum. A joint that can be connected to the side of the body,
A main beam structure for a working scaffold in a boiler furnace characterized by comprising: 前記梁本体は、いずれか一方の前記Ｈ形鋼のウェブの両主面から前記フランジと平行に突出し、かつ前記梁本体の長手方向に沿って延出したガイドを備えたことを特徴とする請求項１に記載のボイラ火炉内の作業足場用主梁構造。   The said beam main body was provided with the guide which protruded in parallel with the said flange from the both main surfaces of any one said H-section steel web, and extended along the longitudinal direction of the said beam main body. Item 2. A main beam structure for a working scaffold in a boiler furnace according to Item 1. 前記梁本体は、先端に水管ノーズ部の吊ロッドと係合する吊り具を備えたことを特徴とする請求項１又は２に記載のボイラ火炉内の作業足場用主梁構造。   The main beam structure for a working scaffold in a boiler furnace according to claim 1, wherein the beam main body includes a lifting tool that engages with a suspension rod of a water tube nose portion at a tip. 前記梁本体は、一対のＨ形鋼の一方のフランジ同士が対向するように上下に積層し、前記フランジの間にトラス構造を設けた梁単体を長手方向に複数連結した構成であり、
前記梁単体は、前記継材が側面にない構成、前記継材がいずれか一方の側面に１つ以上形成された構成、前記継材が両側面にそれぞれ１つ以上形成された構成のいずれかであることを特徴とする請求項１又は２に記載のボイラ火炉内の作業足場用主梁構造。 The beam body has a structure in which a plurality of beam single members each having a truss structure between the flanges are connected in the longitudinal direction so that one flange of a pair of H-shaped steel faces each other.
The single beam has a configuration in which the joint material is not provided on a side surface, a configuration in which one or more joint materials are formed on one side surface, or a configuration in which one or more joint materials are formed on both side surfaces. The main beam structure for a working scaffold in a boiler furnace according to claim 1 or 2, wherein 一対のＨ形鋼の一方のフランジ同士が対向するように上下に積層し、前記フランジの間にトラス構造を設けた梁本体と、一端が前記梁本体の側面に支持されて前記梁本体の側面から前記梁本体の長手方向と交差する方向へ向けて扇状に開閉可能とし、他端が隣接する他の前記梁本体の側面と連結可能な継材と、を備えたボイラ火炉内の作業足場用主梁構造を載置可能として、ボイラ火炉の開口部から火炉内へ前記梁本体の長手方向に沿って搬送可能なローラ本体と、
前記ローラ本体のローラ面から前記梁本体の載置側へ立設して前記梁本体を囲む枠体と、
を備え、
前記枠体には、
前記一方のＨ形鋼の他方のフランジの両主面を把持可能な把持部と、
前記把持部で把持した前記梁本体を長手方向に沿って進退移動可能な搬送部と、
を形成したことを特徴とする作業足場用主梁搬送装置。 A beam body in which a pair of H-shaped steels are vertically stacked so that one flange faces each other, and a truss structure is provided between the flanges, and one end is supported by the side surface of the beam body, and the side surface of the beam body For a working scaffold in a boiler furnace, which can be opened and closed in a fan shape in a direction intersecting with the longitudinal direction of the beam body, and has a joint that can be connected to the side surface of the other beam body adjacent to the other end. A roller main body capable of being placed along the longitudinal direction of the main body of the beam from the opening of the boiler furnace into the furnace, as the main beam structure can be placed;
A frame that stands up from the roller surface of the roller body to the mounting side of the beam body and surrounds the beam body;
With
In the frame,
A gripping portion capable of gripping both main surfaces of the other flange of the one H-shaped steel;
A transport unit capable of moving forward and backward along the longitudinal direction of the beam body gripped by the gripping unit;
A main beam transfer device for work scaffolds, characterized in that is formed. 前記枠体の内側には、
前記梁本体のいずれか一方の前記Ｈ形鋼のウェブの両主面から前記フランジと平行に延出し、かつ前記梁本体の長手方向に沿って延出したガイドの側面と摺接する第１ガイドローラと、
前記他方のＨ形鋼の他方のフランジの側面に摺接する第２ガイドローラと、
を形成したことを特徴とする請求項５に記載の作業足場用主梁搬送装置。 On the inside of the frame,
A first guide roller that extends parallel to the flange from both main surfaces of the H-shaped steel web of any one of the beam main bodies and is in sliding contact with a side surface of the guide that extends along the longitudinal direction of the beam main body. When,
A second guide roller in sliding contact with the side surface of the other flange of the other H-shaped steel;
The main beam transport device for a work scaffold according to claim 5, wherein: 前記枠体の上部には、
前記一方のＨ形鋼のフランジの主面に摺接する上部送り出しローラを形成したことを特徴とする請求項５又は６に記載の作業足場用主梁搬送装置。 At the top of the frame,
The main beam conveying device for a working scaffold according to claim 5 or 6, wherein an upper feed roller is formed which is in sliding contact with the main surface of the flange of the one H-shaped steel. 一対のＨ形鋼の一方のフランジ同士が対向するように上下に積層し、前記フランジの間にトラス構造を設けた梁単体を長手方向に連結しながら挿入し、炉内に複数の作業足場用主梁構造を形成し、
開口部側の隣接する前記梁単体の継材を連結して作業用通路を形成し、
前記作業用通路から足場板を拡張して設置することを特徴とする作業足場の設置方法。 A pair of H-beams are stacked one above the other so that one flange faces each other, and a single beam provided with a truss structure is inserted between the flanges while being connected in the longitudinal direction. Forming the main beam structure,
Connect the joints of the adjacent beams on the opening side to form a working path,
An installation method for a work scaffold, wherein the scaffold board is extended from the work passage.
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