JP3018061B2 - Work stage in boiler furnace and how to move it - Google Patents
Work stage in boiler furnace and how to move itInfo
- Publication number
- JP3018061B2 JP3018061B2 JP6187496A JP18749694A JP3018061B2 JP 3018061 B2 JP3018061 B2 JP 3018061B2 JP 6187496 A JP6187496 A JP 6187496A JP 18749694 A JP18749694 A JP 18749694A JP 3018061 B2 JP3018061 B2 JP 3018061B2
- Authority
- JP
- Japan
- Prior art keywords
- work stage
- stage
- furnace
- work
- bellows frame
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Landscapes
- Movable Scaffolding (AREA)
Description
【0001】[0001]
【産業上の利用分野】本発明は、火力発電所等における
石炭焚きボイラ、重油焚きボイラ、LPG焚きボイラ等
を対象とし、当該ボイラ炉内を定期的に保守、点検した
り、修理作業等を行うために、ボイラ炉内で組み立て構
成される作業ステージと、その構築移動方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is directed to a coal-fired boiler, a heavy oil-fired boiler, an LPG-fired boiler, etc. in a thermal power plant or the like. The present invention relates to a work stage assembled in a boiler furnace and a method of moving the work stage.
【0002】[0002]
【従来の技術】従来、火力発電所におけるボイラ炉内の
定期点検を安定した作業足場で行うに、特公平5−40
108号公報に記載の「ボイラ火炉内作業用足場装置」
が提案され、これはボイラ炉内で吹き抜け回廊構造の作
業ステージを形成し、当該作業ステージを炉天井部の吊
り鉄構にワイヤロープで吊設し、当該ワイヤロープを巻
き上げたり、巻き戻すことで、前記作業ステージを昇降
移動させ、ボイラ炉内における櫓状固定足場を組立分解
する上での作業性を大幅に軽減し、炉壁、炉水管等の保
守、点検や補修作業等に対処している。2. Description of the Related Art Conventionally, a periodic inspection of a boiler furnace in a thermal power plant has to be carried out on a stable work platform by using Japanese Patent Publication No. 5-40.
No. 108, "Scaffolding device for operation in boiler furnace"
It is proposed to form a work stage with a stairwell corridor structure in a boiler furnace, hang the work stage on a suspension iron structure at the furnace ceiling with a wire rope, and wind up or rewind the wire rope. By moving the work stage up and down, the workability in assembling and disassembling the tower-shaped fixed scaffold in the boiler furnace is greatly reduced, and the maintenance, inspection and repair work of the furnace wall, the furnace water pipe, etc. are dealt with. I have.
【0003】ところで、ボイラ炉の大きさは、テニスコ
ートが2、3面程度入る位の広さで、3、40〜7、8
0メートルの高さの高層ビルが内部に納まるほど巨大化
している。また、ボイラ炉内の内部構造をみると、ボイ
ラ高さの6〜7割程度の高さ位置には、断面楔状、山形
状の張り出し部分(これをデフレクション・アーチ、通
称、デフアーチともいう)が固定的に形成されており、
また、当該張り出し部の直上部や、ボイラ炉の天井部分
には、隔壁型過熱器エレメントや板型加熱器エレメント
が列設されている。この過熱器エレメントやデフレクシ
ョン・アーチは、ボイラ炉がLPG焚きであるか、重油
焚きであるか、石炭焚きであるか等によって、その構造
やレイアウトが多種多様となっている。By the way, the size of a boiler furnace is large enough to accommodate a few tennis courts, and is 3,40-7,8.
The skyscraper, which is 0 meters high, is so large that it can fit inside. Looking at the internal structure of the boiler furnace, a wedge-shaped or mountain-shaped projecting portion (referred to as a deflection arch, commonly called a differential arch) is located at a height of about 60 to 70% of the boiler height. Are fixedly formed,
Further, a partition-type superheater element or a plate-type heater element is arranged in line directly above the overhang portion or on the ceiling portion of the boiler furnace. The structure and layout of these superheater elements and deflection arches vary depending on whether the boiler furnace is LPG-fired, heavy oil-fired, or coal-fired.
【0004】[0004]
【発明が解決しようとする課題】従って、前記した吹き
抜け回廊構造の作業ステージを炉上方部へ引き上げた場
合、当然のことながらデフレクション・アーチから上方
へは引き上げることができず、そこで、吹き抜け回廊構
造の作業ステージを、張り出し部分の直下部まで引き上
げた上で、足場資材を炉底からゴンドラで吊り上げ、作
業ステージの回廊部分に、そこから上方にかけての固定
足場を別途構築せねばならない。しかも、回廊構造の作
業ステージの場合には、固定足場を回廊部分に構築する
としても、その内側位置の吹き抜け部分の炉天井部の保
守、点検や補修等の各種作業ができない。Therefore, when the work stage having the above-mentioned corridor structure is lifted to the upper part of the furnace, it cannot be naturally lifted upward from the deflection arch. After raising the working stage of the structure to just below the overhang, the scaffolding material must be lifted from the bottom of the furnace with a gondola, and a fixed scaffold extending upward from the corridor of the working stage must be separately constructed. Moreover, in the case of the work stage having the corridor structure, even if the fixed scaffold is constructed in the corridor portion, various operations such as maintenance, inspection, and repair of the furnace ceiling in the atrium portion inside the corridor portion cannot be performed.
【0005】そこで、本件出願人の一は、実開平5−3
479号公報に記載の「ワーキングステーション」にお
いて、デフレクション・アーチの直下部まで引き上げる
ことのできる作業ステージと、デフレクション・アーチ
を避けて天井部まで引き上げることのできる作業ステー
ジとの2分割構造とする作業ステージを提案し、これに
よりボイラ炉内の保守、点検や補修等の各種作業が、安
定した作業足場で行えるようにしている。ところが、両
者は個々に独立して構成されており、作業の一層の安全
性と組み立て工期の短縮化を促進し、また、実用的で作
業効率と経済性にも優れた構造体に改良することが望ま
れている。Therefore, one of the applicants of the present invention is disclosed in Japanese Utility Model Laid-Open No. 5-3.
In the "working station" described in Japanese Patent No. 479, the work station can be raised to a position directly below the deflection arch, and the work stage can be raised to the ceiling avoiding the deflection arch. It proposes a work stage to perform various operations such as maintenance, inspection and repair in the boiler furnace on a stable work platform. However, both are constructed independently of each other, promoting further safety of work and shortening of assembly period, and improving the structure to be practical and excellent in work efficiency and economy. Is desired.
【0006】[0006]
【課題を解決するための手段】そこで、本発明では、主
に、2分割構造の作業ステージによる吊り上げ装置とし
ての長所、即ち、ボイラ炉の天井部までと、デフレクシ
ョン・アーチまでの昇降移動を可能ならしめる為に、装
置的には、ボイラ炉内に形成した作業ステージを、炉天
井部の吊り架構にワイヤロープで吊設し、当該ワイヤロ
ープの巻き上げ機を巻き上げたり、巻き戻すことで、前
記作業ステージがボイラ炉内を昇降移動するように構成
してなるボイラ炉内の作業ステージにおいて、前記作業
ステージを前部側作業ステージと後部側作業ステージと
で形成し、その内、後部側作業ステージの内側端部寄り
の上部位置と、前部側作業ステージの内側端部寄りの底
部位置との間に、その横幅方向に亙って折り畳み脚を多
段に積み上げて連結した蛇腹枠を介装し、当該蛇腹枠を
折り畳んだり、立ち上げて前部側作業ステージと後部側
作業ステージを段付き状態に構成してなるボイラ炉内の
作業ステージを提供したのである。斯様に、前部側作業
ステージと後部側作業ステージの相互間を上下に伸長自
在な折り畳み自在な蛇腹枠で連結することで、デフレク
ション・アーチの近傍と、ボイラ炉の天井部や過熱器エ
レメントに対する保守、点検や補修作業等を安全に、且
つ、安定した足場状態下での作業を可能としたのであ
る。In the present invention, therefore, the advantage of a lifting device using a work stage having a two-part structure, that is, the lifting and lowering movement to the ceiling of the boiler furnace and the deflection arch is mainly performed. In order to make it possible, in terms of equipment, the work stage formed in the boiler furnace is suspended by a wire rope on a suspension frame at the furnace ceiling, and the wire rope hoist is wound up or rewinded. In the work stage in the boiler furnace configured so that the work stage moves up and down in the boiler furnace, the work stage is formed by a front work stage and a rear work stage, and the rear work is performed. Between the top position near the inner end of the stage and the bottom position near the inner end of the front working stage, the folding legs are stacked in multiple stages in the width direction and connected. The bellows frame interposed a, folded the bellows frame, it was provided a working stage of the boiler furnace comprising constituting the front side work stage and the rear side work stage stepped state launched. In this way, by connecting the front-side work stage and the rear-side work stage with a collapsible frame that can be extended vertically, the vicinity of the deflection arch, the ceiling of the boiler furnace and the superheater The maintenance, inspection, repair work, and the like for the element can be performed safely and under a stable scaffolding condition.
【0007】[0007]
【作用】また、方法的には、ボイラ炉内の底部で作業ス
テージを組み立て形成し、当該作業ステージをワイヤロ
ープで吊設した上で、当該ワイヤロープの巻き上げ機を
巻き上げたり、巻き戻すことで、ボイラ炉内を昇降移動
させてなるボイラ炉内における作業ステージの構築移動
方法において、炉底ステージのほぼ前半部で前部側作業
ステージを組み立て形成し、当該前部側作業ステージを
適宜高さ位置まで一旦吊り上げて停止させ、次いで、炉
底ステージのほぼ後半部で後部側作業ステージを組み立
て形成し、当該後部側作業ステージの内側端部寄りの上
部位置に、折り畳み脚の多数組を多段に積み上げて折り
畳み自在に連結した蛇腹枠の下端部を取り付け、一旦、
吊り上げられた前部側作業ステージを前記蛇腹枠の最上
段の位置まで吊り降ろした上で、蛇腹枠の上端部を前部
側作業ステージの内側端部寄りの底部位置に連結し、そ
の上で、先ず、前部側作業ステージを蛇腹枠の1段分吊
り上げ、最上段の蛇腹枠における折り畳み脚を立ち上げ
た上で、隣合う折り畳み脚に筋交いを差し渡して連結
し、次に、前部側作業ステージを次位の1段分吊り上げ
て、次段位の蛇腹枠における折り畳み脚を立ち上げ、隣
合う折り畳み脚に筋交いを差し渡して連結し、これを蛇
腹枠の段数分だけ繰り返すことで蛇腹枠全体を鉛直に立
ち上げ、その後、前部側作業ステージと後部側作業ステ
ージの全体を同調させて、炉上方部へ吊り上げるように
してなるボイラ炉内における作業ステージの構築移動方
法を提供したのである。In a method, a work stage is assembled and formed at the bottom of the boiler furnace, and the work stage is suspended by a wire rope, and then the wire rope hoist is wound up or unwound. In the method of constructing and moving a work stage in a boiler furnace by moving up and down in a boiler furnace, a front work stage is assembled and formed in approximately the first half of a furnace bottom stage, and the front work stage is appropriately raised in height. Position, and then assemble and form the rear work stage almost at the rear half of the hearth stage.In the upper position near the inner end of the rear work stage, multiple sets of folding legs are multi-staged. Attach the lower end of the bellows frame that is stacked and foldable and connected,
After suspending the lifted front-side work stage to the uppermost position of the bellows frame, the upper end of the bellows frame is connected to a bottom position near the inner end of the front-side work stage. First, the front work stage is lifted by one stage of the bellows frame, the folding legs in the uppermost bellows frame are raised, and a brace is inserted into and connected to the adjacent folding legs. The work stage is lifted by one step, the folding legs in the bellows frame of the next rank are raised, the braces are connected to the adjacent folding legs, and this is repeated by the number of the bellows frames, thereby repeating the entire bellows frame. The work stage in the boiler furnace, in which the whole of the front work stage and the rear work stage are tuned up and then lifted to the upper part of the furnace. .
【0008】[0008]
【実施例】先ず、ボイラ炉の全体概要を示す図2におい
て、FはLPG焚き用のボイラ炉であって、その本体胴
部が角筒構造に形成され、その底部を緩やかな傾斜勾配
のホッパー構造とする炉構造を呈している。1は炉背面
壁2の上方部に張り出し形成された山形状のデフレクシ
ョン・アーチであって、ボイラ炉Fの高さ(35〜40
メートル)の6〜7割程度の位置に通常形成されてい
る。そこで、当該デフレクション・アーチ1を境にし
て、当該アーチ1の先端部から炉天井壁3にかけての上
部側部位には、上部火炉4が構成され、また、デフレク
ション・アーチ1の先端部から炉底部5にかけての本体
部位には、燃焼火炉6が構成されている。7は炉底部5
の左右両側中心位置に開口形成したマンホールであっ
て、ボイラ炉F内に各種の鋼管、鋼板等の組立資材や、
巻き上げ装置等の各種機器類が搬入される。8は隔壁型
過熱器エレメント、9は板型過熱器エレメントであっ
て、デフレクション・アーチ1の先端部から上部側であ
って、当該デフレクション・アーチ1寄りの後部側位置
に並列状態に垂下支持されている。尚、上部火炉4と燃
焼火炉6と炉底部5における全ての炉壁面には、炉水管
(図示せず)が密間隔に埋設配管され、また、炉背面壁
2にはバーナー部(図示せず)が縦列配置されている。First, in FIG. 2 showing the general outline of the boiler furnace, F is a boiler furnace for burning LPG, the main body of which is formed in a rectangular tube structure, and the bottom of which is a hopper having a gentle slope. It has a furnace structure. Reference numeral 1 denotes a mountain-shaped deflection arch which is formed to protrude above the furnace rear wall 2 and has a height (35 to 40) of the boiler furnace F.
Meters) is usually formed at a position of about 60 to 70%. Therefore, an upper furnace 4 is formed on an upper side portion from the tip of the arch 1 to the furnace ceiling wall 3 with the deflection arch 1 as a boundary. A combustion furnace 6 is formed in a main body part extending to the furnace bottom 5. 7 is the furnace bottom 5
Manholes formed at the center position on both left and right sides of the steel pipe, assembling materials such as various steel pipes and steel sheets in the boiler furnace F,
Various devices such as a hoisting device are carried in. Reference numeral 8 denotes a bulkhead type superheater element, and 9 denotes a plate type superheater element, which is suspended from the front end of the deflection arch 1 to an upper side thereof and in a rearward position near the deflection arch 1 in a parallel state. Supported. Furnace water pipes (not shown) are closely buried in all furnace walls in the upper furnace 4, the combustion furnace 6, and the furnace bottom 5, and a burner section (not shown) is provided in the furnace rear wall 2. ) Are arranged in tandem.
【0009】10は炉天井壁3の上部天井裏にフレーム
構成した吊り鉄構、11〜13は炉天井壁3に穿設した
貫通口であって、既設のボイラ炉Fの炉天井壁3に後発
的に穿孔加工され、図2に示すLPG焚きボイラ炉Fの
場合には、過熱器エレメント8、9の取付位置を避けた
上部火炉4の前半部位置の炉天井壁3に、前部貫通口1
1と中間貫通口12が、また、上部火炉4の後半部にお
ける隔壁型過熱器エレメント8と板型過熱器エレメント
9の間の炉天井壁3に、後部貫通口13が形成される。Reference numeral 10 denotes a suspension iron structure frame-structured behind the upper ceiling of the furnace ceiling wall 3, and 11 to 13 are through holes formed in the furnace ceiling wall 3, which are formed in the furnace ceiling wall 3 of the existing boiler furnace F. In the case of the LPG-fired boiler furnace F shown in FIG. 2, which is later drilled, the front penetration into the furnace ceiling wall 3 at the front half of the upper furnace 4 avoiding the mounting position of the superheater elements 8 and 9. Mouth 1
1 and an intermediate through-hole 12, and a rear through-hole 13 in the furnace ceiling wall 3 between the bulkhead superheater element 8 and the plate-type superheater element 9 in the rear half of the upper furnace 4.
【0010】そこで、本発明に係る作業ステージの構成
と組み立て手順を説明する。それに先立って、先ず、燃
焼火炉6の炉底部5において、本発明における作業ステ
ージの組立受台として、また、作業終了後における解体
受台として機能させる為に、上面を水平状態とする炉底
ステージDを組み立てる。これは炉底部5の左右両側位
置にあるマンホール7から、鋼管、型鋼、帯板、網板等
の各種足場資材を炉内へ搬入し、図4の概要図に示すよ
うに、炉底部5における緩やかな傾斜勾配に沿って、鋼
管足場の脚の長さを徐々に増減した船底状足場構造体
(最深部は4〜5メートル程度となる)を組み立て形成
した上で、その上面に帯板、網板等を水平に敷設するこ
とによって組み立てられる。Therefore, the configuration and the assembling procedure of the work stage according to the present invention will be described. Prior to that, first, in order to function as an assembling pedestal for the work stage in the present invention and as a dismantling pedestal after the work is completed, the furnace bottom stage in which the upper surface is horizontal at the furnace bottom 5 of the combustion furnace 6. Assemble D. In this method, various scaffolding materials such as steel pipes, steel bars, strips, mesh plates, etc. are carried into the furnace from manholes 7 located on both left and right sides of the furnace bottom 5, and as shown in the schematic diagram of FIG. After assembling and forming a bottom-like scaffold structure with the length of the legs of the steel pipe scaffold gradually increased / decreased along the gentle slope (the deepest part is about 4 to 5 meters), It is assembled by laying a net board or the like horizontally.
【0011】その上で、先ず、炉底部5の前半部位置に
おいて、作業ステージAを構成するための各種資材を、
再び、マンホール7から炉底ステージDの上に搬入し、
この搬入資材によって、前部側作業ステージAを矩形盤
状にフレーム形成した上で、この作業ステージAの上面
に帯板を固定したり、網板を張設することで、図6に示
すように、前部側作業ステージAが組み立て構成され
る。尚、炉底ステージDの前半部寄りの位置で、前部側
作業ステージAを組み立てることにした訳は、本実施例
のボイラ炉Fにおける上部火炉4の前半部位置には、過
熱器エレメント8、9が構成されておらず、炉天井壁3
までの部分が空間部となっていることに着目したからで
ある。Then, at the first half position of the furnace bottom 5, various materials for constituting the work stage A are
Again, it is carried from the manhole 7 onto the furnace bottom stage D,
The front side work stage A is formed into a rectangular disk-shaped frame by using the loaded materials, and then a band plate is fixed on the upper surface of the work stage A, or a net plate is stretched, as shown in FIG. Then, the front-side work stage A is assembled and configured. The reason that the front side work stage A is assembled at a position near the front half of the furnace bottom stage D is that the superheater element 8 is located at the front half of the upper furnace 4 in the boiler furnace F of the present embodiment. , 9 are not configured and the furnace ceiling wall 3
This is because we paid attention to the fact that the space up to the space was a space.
【0012】そして、この前部側作業ステージAを吊り
上げる構成機器を、マンホール7から搬入し、先ず、搬
入したモータ付き巻き上げ機14の4基を、図3の左上
部分に示すように、作業ステージAの後端部の左右コー
ナー部分と、作業ステージEの前部寄りの左右両側位置
の周辺4カ所に取り付ける。また、巻き上げ機14の内
部を回曲して挿通させたワイヤロープ15の上端フック
16を、炉天井壁3における前部貫通口11と中間貫通
口12に挿通させた上で、炉天井裏の吊り鉄構10に掛
架し、これにて前部側作業ステージAを図6に示すよう
に吊持可能に形成する。図3において、17は前部側作
業ステージAの炉正面壁18と片側の側面壁19の2辺
に取り付けた硬質ゴム製ガイドローラであって、コイル
スプリング又はエアシリンダ20等により出没自在に付
勢され、これにて前部側作業ステージAの2辺が炉水管
と直接当接しないようしている。21は前部側作業ステ
ージAの炉壁面の2辺に取り付けた掛架フックであっ
て、当該前部側作業ステージAに対してゴンドラGが後
発的に吊り下げられる。The components for lifting the front-side work stage A are carried in from the manhole 7. First, four carried-in motor hoists 14 are moved to the work stage as shown in the upper left part of FIG. The work stage E is attached to the left and right corners at the rear end portion and four peripheral positions at the left and right sides near the front of the work stage E. Further, the upper end hook 16 of the wire rope 15, which is bent and inserted inside the hoisting machine 14, is inserted into the front through-hole 11 and the intermediate through-hole 12 in the furnace ceiling wall 3, and then, the inside of the furnace ceiling is opened. The front work stage A is hung on the suspension iron structure 10 so as to be able to be suspended as shown in FIG. In FIG. 3, reference numeral 17 denotes a hard rubber guide roller mounted on two sides of the furnace front wall 18 and one side wall 19 of the front work stage A, and is provided so as to be freely retractable by a coil spring or an air cylinder 20 or the like. As a result, the two sides of the front working stage A are prevented from directly contacting the reactor water pipe. Reference numeral 21 denotes a hanging hook attached to two sides of the furnace wall of the front work stage A, and the gondola G is hung from the front work stage A later.
【0013】そこで、前部側作業ステージAにおけるモ
ータ付き巻き上げ機14の4基を同期作動すると、ワイ
ヤロープ15を伝って個々の巻き上げ機14が上昇移動
するように作動し、これにて前部側作業ステージAを数
メートル程度、鉛直上方へ引き上げた段階で、図7に示
す程度の高さ位置で一時停止した状態に保持する。Therefore, when the four motor-driven winders 14 in the front working stage A are operated synchronously, the individual winders 14 are moved up along the wire ropes 15 to thereby move upward. At the stage where the side work stage A has been pulled vertically upward by about several meters, it is held in a state of being temporarily stopped at a height position as shown in FIG.
【0014】次に、炉底ステージDの後半部位置、即
ち、上部火炉4におけるデフレクション・アーチ1寄り
で、過熱器エレメント8、9が構成されているボイラ炉
Fの後半部において、後部側作業ステージBを構成する
ための各種資材を、再び、マンホール7から炉底ステー
ジDの上に搬入し、この搬入資材によって、後部側作業
ステージBを矩形盤状にフレーム形成した上で、その作
業ステージBの上面に帯板を固定したり、網板を張設す
ることで、図7に示すように、後部側作業ステージBが
構成される。Next, at the rear half position of the hearth stage D, that is, near the deflection arch 1 in the upper furnace 4, in the rear half of the boiler furnace F in which the superheater elements 8 and 9 are configured, The various materials for constituting the work stage B are again carried in from the manhole 7 onto the furnace bottom stage D, and the rear work stage B is formed into a rectangular plate-like frame by the carried materials. By fixing a band plate on the upper surface of the stage B or stretching a net plate, a rear working stage B is configured as shown in FIG.
【0015】その上で、今度は、折り畳み構造の蛇腹枠
Jを構成するための各種資材をマンホール7から搬入
し、その資材により、後部側作業ステージBの前端寄り
の上部位置に、折り畳み自在な蛇腹枠Jの構成部材を1
段ごと組み立て、それを折り畳み状態のままで多数段積
み上げることで、蛇腹枠Jの全体を後部側作業ステージ
Bの横幅方向に亙って連設状態に構成する。この蛇腹枠
Jは、図5に示すように、門型状で二つ折れされる折り
畳み脚22の多数組と、当該折り畳み脚22の左右間隔
を保持する横梁23とからなり、これらを横幅方向に亙
って間隔を隔てて配設し、その内、左右両端部と中間部
の蛇腹枠Jの部分において、隣合う左右一対の折り畳み
脚22が中折れ自在に折り畳み形成されることで、その
1段目の蛇腹枠Jが構成され、これを上部側へ次々と多
段に積み上げて連結することにより組み立てられてい
る。その詳細は、本件出願人の一がなした特開平4−2
7069号公報の足場装置に開示している。Then, various materials for constructing the bellows frame J having a folding structure are carried in from the manhole 7, and the materials can be folded at the upper position near the front end of the rear working stage B by using the materials. 1 component of bellows frame J
The entire bellows frame J is formed continuously in the lateral width direction of the rear-side working stage B by assembling each stage and stacking it in a folded state in a large number of stages. As shown in FIG. 5, the bellows frame J is composed of a large number of pairs of folding legs 22 that are folded in a gate shape, and a cross beam 23 that keeps a space between the folding legs 22 in the lateral direction. A pair of adjacent left and right folding legs 22 is formed so as to be freely foldable in the middle of the bellows frame J at the left and right ends and the intermediate portion. The first-stage bellows frame J is formed, and is assembled by stacking and connecting the upper-side one after another in multiple stages. For details, see Japanese Unexamined Patent Publication No.
No. 7069 discloses a scaffold device.
【0016】そして、前部側作業ステージAにおけるモ
ータ付き巻き上げ機14を逆転操作することで、ワイヤ
ロープ15を伝って前部側作業ステージAを降下移動さ
せ、図8に示すように、後部側作業ステージBにおける
蛇腹枠Jの上端部に、前部側作業ステージAの後部底面
位置を当接した上で、蛇腹枠Jの最上段部を前部側作業
ステージEに連結固定する。その上で、蛇腹枠Jの1段
分、前部側作業ステージAにおける巻き上げ機14を正
転操作して、当該作業ステージAを上昇移動させること
で、最上段の蛇腹枠Jにおける折り畳み脚22を立ち上
げ、隣合う左右一対の折り畳み脚22にクロス梁24を
筋交いとして襷掛けすると共に、折り畳み脚22の上下
中間部をロック手段で折れ曲げ不能に固定することで、
最上段の蛇腹枠Jを鉛直起立状態に保持する。再び、次
段位の蛇腹枠Jの1段分、巻き上げ機14を正転操作
し、前部側作業ステージAを1段分上昇移動させること
で、折り畳み脚22の第2段目を立ち上げ、隣合う左右
一対の折り畳み脚22に、再びクロス梁24を筋交いと
して襷掛けすると共に、この第2段目の折り畳み脚22
をロック手段により連結固定する。この作業手順を、蛇
腹枠Jの段数、即ち、折り畳み脚22の折り畳み段数分
繰り返すことにより、図3や図9に示すように蛇腹枠J
の全段を鉛直状態に立ち上げた段階で、巻き上げ機14
の正転操作による前部側作業ステージAの上昇移動を一
旦停止する。Then, by operating the motor-equipped hoist 14 in the front work stage A in the reverse direction, the front work stage A is moved down along the wire rope 15, and as shown in FIG. The uppermost portion of the bellows frame J is connected and fixed to the front side work stage E after the rear bottom surface position of the front side work stage A is brought into contact with the upper end of the bellows frame J on the work stage B. Then, the hoisting machine 14 in the front side work stage A is rotated in the normal direction by one stage of the bellows frame J, and the work stage A is moved upward, whereby the folding legs 22 in the uppermost bellows frame J are moved. By crossing the pair of adjacent left and right folding legs 22 with the cross beam 24 as a brace, and fixing the upper and lower middle portions of the folding legs 22 so that they cannot be bent by locking means.
The uppermost bellows frame J is held in a vertically upright state. Again, the hoisting machine 14 is rotated forward by one stage of the bellows frame J at the next stage, and the front side working stage A is moved up by one stage, so that the second stage of the folding leg 22 is started up. A pair of adjacent left and right folding legs 22 are crossed again with the cross beam 24 as a brace, and the second-stage folding legs 22
Are connected and fixed by locking means. This work procedure is repeated by the number of steps of the bellows frame J, that is, the number of folding steps of the folding legs 22, so that the bellows frame J is obtained as shown in FIGS.
At the stage where all the stages of the hoisting machine have been started up vertically, the hoisting machine 14
The upward movement of the front work stage A due to the forward rotation operation is temporarily stopped.
【0017】他方、後部側作業ステージBには、前部側
作業ステージAの場合と同様に、当該作業ステージBを
吊り上げる構成機器をマンホール7から搬入し、その
内、モータ付き巻き上げ機25の2基を、図3の右下部
分に示すように、後部側作業ステージBのほぼ中間寄り
の左右両側位置に取り付ける。また、巻き上げ機25に
挿通させたワイヤロープ26の上端フック27を、炉天
井壁3における後部貫通口13に挿通させた上で、炉天
井裏の吊り鉄構10に掛架し、これにて後部側作業ステ
ージBを昇降自在に吊持する。その他、後部側作業ステ
ージBの炉背面壁2と片側の側面壁19の2辺には、出
没自在に付勢支持した硬質ゴム製ガイドローラ17等が
取り付けらる。また、後部側作業ステージBの炉壁面側
の2辺には掛架フック21が取り付けられる。On the other hand, as in the case of the front work stage A, components for lifting the work stage B are carried into the rear work stage B from the manhole 7 and, among them, the motor-equipped hoist 25-2. As shown in the lower right part of FIG. Further, the upper end hook 27 of the wire rope 26 passed through the hoist 25 is passed through the rear through-hole 13 in the furnace ceiling wall 3 and then hooked on the suspension iron structure 10 behind the furnace ceiling. The rear-side work stage B is hung up and down freely. In addition, hard rubber guide rollers 17 and the like, which are urged and supported so as to be freely retractable, are attached to two sides of the furnace rear wall 2 and the one side wall 19 of the rear working stage B. Further, hanging hooks 21 are attached to two sides of the furnace wall side of the rear working stage B.
【0018】そこで、前部側作業ステージAにおける巻
き上げ機14の4基と、後部側作業ステージBにおける
巻き上げ機25の2基に対して、作業ステージA、Bの
引き上げ指令を出すと、これらの巻き上げ機14、25
は同期して正回転し、それぞれ吊持するワイヤロープ1
5、26を引き込みながら下方へ排出することで、ワイ
ヤロープ15、26を伝って作業ステージA、Bの全体
を鉛直上方へ上昇移動し、最後には、図1や図10に示
すように、前部側作業ステージAがほぼ炉天井壁3の近
くまで、即ち、作業者の身長分程度の空間を残して吊り
上げられると同時に、後部側作業ステージBをデフレク
ション・アーチ1の下端部まで吊り上げた状態にした上
で、装置全体の引き上げ操作を停止する。その際、作業
ステージA、Bが前後左右に揺れることで、炉内壁面の
炉水管に接触しようとするも、作業ステージA、Bの外
側部分に設けたガイドローラ17が、炉水管との緩衝機
能を果たしながら昇降移動する。作業ステージA、Bの
全体が、ボイラ炉Fの天井部分まで引き上げられた後に
は、この吊り上げた作業ステージA、Bを固定する吊り
ロッド又はフラットバー(図示せず)を、貫通口11〜
13を貫通させた上で、その下端部を巻き上げ機14、
25付近の作業ステージA、Bのフレームに直接固定
し、また、その上端部を吊り鉄鋼10に直接固定するこ
とにより、前部側作業ステージAがボイラ炉Fの天井部
に、また、後部側作業ステージBがデフレクション・ア
ーチ1の部分で安全に固定される。Therefore, when a command to raise the work stages A and B is issued to the four winders 14 on the front work stage A and the two winders 25 on the rear work stage B, these are lifted. Winding machines 14, 25
Is a wire rope 1 that rotates forward in synchronization and hangs
5 and 26 are pulled down and discharged downward, thereby moving the entire work stages A and B vertically upward along the wire ropes 15 and 26, and finally, as shown in FIG. 1 and FIG. The front work stage A is lifted almost to the vicinity of the furnace ceiling wall 3, that is, while leaving a space about the height of the worker, and at the same time, the rear work stage B is lifted to the lower end of the deflection arch 1. Then, the lifting operation of the entire apparatus is stopped. At this time, the work stages A and B swing back and forth and right and left so as to contact the reactor water pipe on the inner wall of the furnace. However, the guide rollers 17 provided on the outer portions of the work stages A and B are buffered with the reactor water pipe. Move up and down while performing functions. After the entire work stages A and B have been pulled up to the ceiling of the boiler furnace F, suspension rods or flat bars (not shown) for fixing the lifted work stages A and B are inserted into the through holes 11 to 11.
13, and the lower end thereof is taken up by a winding machine 14,
The work stage A is fixed directly to the frames of the work stages A and B in the vicinity of 25, and the upper end thereof is fixed directly to the suspended steel 10, so that the front work stage A is mounted on the ceiling of the boiler furnace F and on the rear side. The work stage B is securely fixed at the part of the deflection arch 1.
【0019】また、前記と同様な作業ステージA、Bの
組み立て構築手順により、ボイラ炉Fの右側半分にも、
左側部分と左右対称的にした前部側作業ステージAと後
部側作業ステージBを、蛇腹枠Jを介して段付き状態に
形成した上で吊り上げ作動し、前部側作業ステージAを
右側半分の炉天井壁3の近傍まで吊り上げ、また、後部
側作業ステージBをデフレクション・アーチ1の部分ま
で吊り上げた上で、これらの作業ステージA、Bを、前
記の左側部分の場合と同様に、吊りロッドやフラットバ
ーで移動不能に固定する。これにて段付き状態とする作
業ステージA、Bの2連を、図1に示すように、左右対
称的に並設することにより、各種の保守、点検や修理作
業等が安全に行える作業基盤が得られる。尚、炉天井壁
3に後発的に穿孔加工された貫通口11〜13は、作業
終了後には再び完全に閉成するか、次回の作業時におけ
る再度の穿孔作業を不要とするため、開口自在な状態に
して閉栓される。Further, by the same assembly and construction procedure of the work stages A and B, the right half of the boiler furnace F is also provided.
A front work stage A and a rear work stage B, which are symmetrical to the left part, are formed in a stepped state via a bellows frame J and then lifted, and the front work stage A is moved to the right half. After lifting up to the vicinity of the furnace ceiling wall 3 and lifting the rear-side work stage B to the part of the deflection arch 1, these work stages A and B are lifted in the same manner as in the case of the left side part. Fix it immovably with a rod or flat bar. As shown in FIG. 1, two work stages A and B in a stepped state are arranged side-by-side symmetrically so that various maintenance, inspection and repair work can be performed safely. Is obtained. The through-holes 11 to 13 which are subsequently drilled in the furnace ceiling wall 3 are completely closed again after the end of the operation, or can be freely opened in order to eliminate the necessity of re-piercing at the next operation. It is closed in a state.
【0020】[0020]
【変形例】前記の場合には、前部側作業ステージAと後
部側作業ステージBを蛇腹枠Jにより段付き状態に組み
立て形成した場合について説明したが、図11〜図13
に示す石炭焚きのボイラ炉Fの場合において、上部火炉
4の列設された隔壁型過熱器エレメント8と板型過熱器
エレメント9との間には、比較的幅のある空間部が形成
され、これらの過熱器エレメント8、9の下端部とデフ
レクション・アーチ1の位置が、ほぼ同じ程度の高さに
ある場合には、前記した本実施例における構築移動方法
を一部変更して対処することになる。この場合には、先
ず、炉底ステージDの前半部位置で、前部側作業ステー
ジAを組み立て形成し、炉底ステージDの後半部位置
で、後部側作業ステージBを組み立て形成して、両者を
突き合わせて連結固定した上で、図11に示すように、
後部側作業ステージBの前端上部に、折り畳まれた蛇腹
枠Jを多段に積み上げる。次いで、蛇腹枠Jの上端部に
中間貫通口12から垂下形成したワイヤロープ28を連
結した上で、当該ワイヤロープ28を蛇腹枠Jの上端部
に取り付けたモータ付き巻き上げ機29により巻き取り
作動させて、蛇腹枠Jを一段毎に吊り上げ、これにて蛇
腹枠Jを図12に示すように鉛直状態に立ち上げる。次
いで、前部貫通口11から垂下したワイヤロープ30の
下端部を、前部側作業ステージAの前端部に取り付けた
モータ付き巻き上げ機31に連結し、また、後部貫通口
13から垂下したワイヤロープ32の下端部を、後部側
作業ステージBのほぼ中間部に取り付けたモータ付き巻
き上げ機33に連結する。その上で、これらの巻き上げ
機29、31、33を同期させて巻き取り作動すること
で、逆T字状に組み立てられた作業ステージA、Bの構
造体は、ボイラ炉Fの上方部へ吊り上げられ、図13に
示すように、蛇腹枠Jは起立状態のまま隔壁型過熱器エ
レメント8と板型過熱器エレメント9との間に吊り上げ
られる。後は、前記のワイヤロープ28、30、32に
代えて、吊りロッド又はフラットバーを、吊り架構10
と蛇腹枠Jの上端部との間、前部側作業ステージAと後
部側作業ステージBとの間に連結固定することで、各種
の保守、点検や修理作業等を安全に行なうための作業基
盤が得られる。[Modification] In the above case, the case where the front working stage A and the rear working stage B are assembled and formed in a stepped state by the bellows frame J has been described.
In the case of the coal-fired boiler furnace F shown in (1), a relatively wide space is formed between the partition type superheater element 8 and the plate type superheater element 9 arranged in the upper furnace 4, When the lower ends of the superheater elements 8 and 9 and the position of the deflection arch 1 are almost at the same height, the above-described construction moving method in the present embodiment is partially changed to cope with the problem. Will be. In this case, first, the front-side work stage A is assembled and formed at the front half position of the hearth stage D, and the rear-side work stage B is assembled and formed at the rear half position of the hearth stage D. Are connected and fixed, and as shown in FIG.
The folded bellows frame J is stacked on the upper front end of the rear working stage B in multiple stages. Next, after connecting a wire rope 28 hanging down from the intermediate through-hole 12 to the upper end of the bellows frame J, the wire rope 28 is wound up by a motor-equipped winder 29 attached to the upper end of the bellows frame J. Then, the bellows frame J is lifted one by one, and thereby the bellows frame J is raised in a vertical state as shown in FIG. Next, the lower end of the wire rope 30 hanging down from the front through-hole 11 is connected to a motor-equipped hoist 31 attached to the front end of the front work stage A, and the wire rope hanging down from the rear through-hole 13. The lower end portion of the motor 32 is connected to a motor-equipped hoist 33 attached to a substantially intermediate portion of the rear working stage B. Then, by winding these winding machines 29, 31, and 33 in synchronization with each other, the structure of the work stages A and B assembled in an inverted T-shape is lifted to the upper part of the boiler furnace F. As shown in FIG. 13, the bellows frame J is lifted between the partition-type superheater element 8 and the plate-type superheater element 9 in an upright state. After that, instead of the above-mentioned wire ropes 28, 30, 32, a suspension rod or a flat bar is attached to the suspension frame 10.
Work base for safely performing various maintenance, inspection, repair work, etc. by connecting and fixing between the upper stage of the bellows frame J and the front work stage A and the rear work stage B. Is obtained.
【0021】[0021]
【発明の効果】本発明は、前記のように、装置的には、
作業ステージを前部側作業ステージと後部側作業ステー
ジとで形成し、その内、後部側作業ステージの内側端部
寄りの上部位置と、前部側作業ステージの内側端部寄り
の底部位置との間に、その横幅方向に亙って折り畳み脚
を多段に積み上げて連結した蛇腹枠を介装し、当該蛇腹
枠を折り畳んだり、立ち上げて前部側作業ステージと後
部側作業ステージを段付き状態に構成してなるボイラ炉
内の作業ステージを提供したので、高さの異なるボイラ
炉の炉天井壁と、デフレクション・アーチの近傍におけ
る保守、点検や補修作業等を安全且つ安定した状態下で
の作業を可能とする。その上、前部側作業ステージと後
部側作業ステージを上下に連結する鉛直状態の蛇腹枠
を、固定足場として過熱器エレメントにかけての足場枠
を延設することで、過熱器エレメントの相互間における
点検、補修作業も可能とする。また、方法的には、炉底
ステージのほぼ前半部で前部側作業ステージを組み立て
形成し、当該前部側作業ステージを適宜高さ位置まで一
旦吊り上げて停止させ、次いで、炉底ステージのほぼ後
半部で後部側作業ステージを組み立て形成し、当該後部
側作業ステージの内側端部寄りの上部位置に、折り畳み
脚の多数組を多段に積み上げて折り畳み自在に連結した
蛇腹枠の下端部を取り付け、一旦、吊り上げられた前部
側作業ステージを前記蛇腹枠の最上段の位置まで吊り降
ろした上で、蛇腹枠の上端部を前部側作業ステージの内
側端部寄り底部位置に連結支持し、その上で、先ず、前
部側作業ステージを蛇腹枠の1段分吊り上げ、最上段の
蛇腹枠における折り畳み脚を立ち上げた上で、隣合う折
り畳み脚に筋交いを差し渡して連結し、次に、前部用作
業ステージを次位の1段分吊り上げて、次段位の蛇腹枠
における折り畳み脚を立ち上げ、隣合う折り畳み脚に筋
交いを差し渡して連結し、これを蛇腹枠の段数分だけ繰
り返すことで蛇腹枠全体を鉛直に立ち上げ、その後、前
部側作業ステージと後部側作業ステージの全体を同調さ
せて、炉上方部へ吊り上げるようにしてなるボイラ炉内
における作業ステージの構築移動方法を提供したので、
炉底部における炉底ステージを、作業ステージに対する
組立、解体足場とすることで、組立作業のみならず解体
作業が安全迅速に行うことができ、その為、作業ステー
ジの組立、解体に要する作業工期を大幅に短縮化するこ
とができる。また、吊り上げられた高さの異なる作業ス
テージを固定ベースとすることで、ボイラ炉内の保守、
点検や修理作業等が、安全且つ安定した作業ステージを
ベースとして安心して行うことができ、作業効率を格段
に向上させる等の諸効果をもたらす。According to the present invention, as described above,
The work stage is formed by a front work stage and a rear work stage, and of the work stage, an upper position near the inner end of the rear work stage and a bottom position near the inner end of the front work stage. In the meantime, a bellows frame in which folding legs are stacked in multiple stages in the width direction is interposed, and the bellows frame is folded or raised, and the front work stage and the rear work stage are stepped. The work stage inside the boiler furnace is provided, so that maintenance, inspection, repair work, etc. near the furnace ceiling wall of different heights and the deflection arch can be performed safely and stably. Work. In addition, the vertical bellows frame connecting the front side work stage and the rear side work stage up and down, and the scaffold frame extending over the superheater element as a fixed scaffold is extended to inspect the superheater elements between each other. And repair work is also possible. In addition, in terms of method, a front-side work stage is assembled and formed almost at the front half of the hearth stage, and the front-side work stage is temporarily lifted to an appropriate height position and stopped, and then substantially Assembling and forming the rear work stage in the latter half, and attaching the lower end of the bellows frame, which is a stack of multiple sets of folding legs and is foldably connected at the upper position near the inner end of the rear work stage, Once the suspended front-side work stage is suspended and lowered to the uppermost position of the bellows frame, the upper end of the bellows frame is connected and supported at a bottom position near the inner end of the front-side work stage. First, the front side work stage is lifted by one stage of the bellows frame, the folding legs in the uppermost bellows frame are raised, and the braces are connected to the adjacent folding legs, and then connected. The next work stage is lifted by one stage, the folding legs in the next stage bellows frame are raised, the braces are connected to the adjacent folding legs and connected, and this is repeated by the number of stages of the bellows frame. Since the whole was started up vertically, and then the entire front side work stage and the rear side work stage were synchronized, and a method of constructing and moving the work stage in the boiler furnace was provided so that the work stage was lifted above the furnace.
By making the furnace bottom stage at the furnace bottom a scaffold for assembling and disassembling the work stage, not only the assembling work but also the dismantling work can be performed quickly and safely. It can be significantly shortened. In addition, maintenance work inside the boiler furnace,
Inspection and repair work can be performed with security based on a safe and stable work stage, and various effects such as significantly improving work efficiency can be brought about.
【図1】ボイラ炉内の上層部に吊り上げられた作業ステ
ージを示す透視図である。FIG. 1 is a perspective view showing a work stage suspended in an upper layer in a boiler furnace.
【図2】ボイラ炉の全体概要を示す断面図である。FIG. 2 is a cross-sectional view showing an overall outline of a boiler furnace.
【図3】前部側作業ステージと後部側作業ステージを蛇
腹枠で段付き状態にした状態を示す斜視図である。FIG. 3 is a perspective view showing a state in which a front side work stage and a rear side work stage are stepped by a bellows frame;
【図4】炉底ステージを示す断面図である。FIG. 4 is a sectional view showing a furnace bottom stage.
【図5】蛇腹枠の一部折り畳み状態を示す斜視図であ
る。FIG. 5 is a perspective view showing a partially folded state of the bellows frame.
【図6】炉底ステージとその前半部に設けた前部側作業
ステージを示す図である。FIG. 6 is a diagram showing a furnace bottom stage and a front working stage provided in a front half thereof.
【図7】一旦、吊り上げた前部側作業ステージと、炉底
ステージの後半部に設けた後部側作業ステージと、後部
側作業ステージの前端位置に折り畳まれた蛇腹枠を多段
に積み上げた状態を示す図である。FIG. 7 shows a state in which a front work stage once suspended, a rear work stage provided in the rear half of the hearth stage, and a bellows frame folded at the front end position of the rear work stage are stacked in multiple stages. FIG.
【図8】前部側作業ステージを吊り降ろして、その後端
位置に蛇腹枠の上端部を連結した状態を示す図である。FIG. 8 is a diagram showing a state in which the front work stage is suspended and the upper end of the bellows frame is connected to the rear end position.
【図9】蛇腹枠の折り畳み段数分、前部側作業ステージ
を吊り上げることで、蛇腹枠の全体を鉛直状態に立ち上
げ、前部側作業ステージと後部側作業ステージとを段付
き状態とした図である。FIG. 9 is a view in which the entire front of the bellows frame is raised in a vertical state by lifting the front side work stage by the number of folding steps of the bellows frame, and the front side work stage and the rear side work stage are stepped. It is.
【図10】前部側作業ステージを炉天井部まで吊り上
げ、後部側作業ステージをデフレクション・アーチ付近
まで吊り上げた状態を示す図である。FIG. 10 is a view showing a state in which a front working stage is lifted up to a furnace ceiling, and a rear working stage is lifted up to near a deflection arch.
【図11】前部側作業ステージと後部側作業ステージを
連結し、折り畳まれた多数段の蛇腹枠を取り付けた状態
を示す図である。FIG. 11 is a view showing a state in which the front-side work stage and the rear-side work stage are connected, and a plurality of folded bellows frames are attached.
【図12】折り畳み段数分、蛇腹枠を吊り上げること
で、蛇腹枠の全体を鉛直状態に立ち上げた状態を示す図
である。FIG. 12 is a diagram showing a state in which the entire bellows frame is raised in a vertical state by lifting the bellows frame by the number of folding steps.
【図13】蛇腹枠の上端部を炉天井部まで吊り上げ、作
業ステージをデフレクション・アーチ付近まで吊り上げ
た状態を示す図である。FIG. 13 is a view showing a state in which the upper end of the bellows frame is lifted up to the furnace ceiling, and the work stage is lifted up to the vicinity of the deflection arch.
F ボイラ炉 D 炉底ステージ A 前部側作業ステージ B 後部側作業ステージ J 蛇腹枠 G ゴンドラ 1 デフレクション・アーチ 2 炉背面壁 3 炉天井壁 4 上部火炉 5 炉底部 6 燃焼火炉 7 マンホール 8、9 過熱器エレメント 10 吊り架構 11〜13 貫通口 14、25 モータ付き巻き上げ機 15、26 ワイヤロープ 16、27 上端フック 17 ガイドローラ 18 炉正面壁 19 炉側面壁 20 エアシリンダ 21 フック 22 折り畳み脚 23 横梁 24 クロス梁 28、30、32 ワイヤロープ 29、31、33 モータ付き巻き上げ機 F Boiler furnace D Furnace bottom stage A Front work stage B Rear work stage J Bellows frame G Gondola 1 Deflection arch 2 Furnace back wall 3 Furnace ceiling wall 4 Upper furnace 5 Furnace bottom 6 Combustion furnace 7 Manhole 8, 9 Superheater element 10 Suspension frame 11-13 Through hole 14, 25 Motor winder 15, 26 Wire rope 16, 27 Upper hook 17 Guide roller 18 Furnace front wall 19 Furnace side wall 20 Air cylinder 21 Hook 22 Folding leg 23 Cross beam 24 Cross beams 28, 30, 32 Wire ropes 29, 31, 33 Winding machine with motor
───────────────────────────────────────────────────── フロントページの続き (72)発明者 藤森 成樹 大阪市北区中津4丁目4番11号 明興金 属工業株式会社内 (72)発明者 木村 雅寛 大阪市北区中津4丁目4番11号 明興金 属工業株式会社内 (58)調査した分野(Int.Cl.7,DB名) E04G 1/36 F22B 37/02 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Shigeki Fujimori 4-4-111 Nakatsu, Kita-ku, Osaka-shi Meiko Kinzoku Kogyo Co., Ltd. (72) Inventor Masahiro Kimura 4-4-1-11 Nakatsu, Kita-ku, Osaka-shi No. Meiko Metal Industry Co., Ltd. (58) Field surveyed (Int. Cl. 7 , DB name) E04G 1/36 F22B 37/02
Claims (3)
立て形成し、当該作業ステージをワイヤロープで吊設し
た上で、当該ワイヤロープの巻き上げ機を巻き上げた
り、巻き戻すことで、ボイラ炉内を昇降移動させてなる
ボイラ炉内における作業ステージの構築移動方法におい
て、炉底ステージのほぼ前半部で前部側作業ステージを
組み立て形成し、当該前部側作業ステージを適宜高さ位
置まで一旦吊り上げて停止させ、次いで、炉底ステージ
のほぼ後半部で後部側作業ステージを組み立て形成し、
当該後部側作業ステージの内側端部寄りの上部位置に、
折り畳み脚の多数組を多段に積み上げて折り畳み自在に
連結した蛇腹枠の下端部を取り付け、一旦、吊り上げら
れた前部側作業ステージを前記蛇腹枠の最上段の位置ま
で吊り降ろした上で、蛇腹枠の上端部を前部側作業ステ
ージの内側端部寄りの底部位置に連結し、その上で、先
ず、前部側作業ステージを蛇腹枠の1段分吊り上げて、
最上段の蛇腹枠における折り畳み脚を立ち上げた上で、
隣合う折り畳み脚に筋交いを差し渡して連結し、次に、
前部側作業ステージを次位の1段分吊り上げて、次段位
の蛇腹枠における折り畳み脚を立ち上げ、隣合う折り畳
み脚に筋交いを差し渡して連結し、これを蛇腹枠の段数
分繰り返すことで蛇腹枠全体を鉛直状態に立ち上げ、そ
の後、前部側作業ステージと後部側作業ステージの全体
を同調させて、炉上方部へ吊り上げるように構成したこ
とを特徴とするボイラ炉内における作業ステージの構築
移動方法。1. A work stage is assembled and formed at the bottom of a boiler furnace, and the work stage is hung by a wire rope, and then the wire rope hoist is wound up or unwound, so that the inside of the boiler furnace is cooled. In the method of constructing and moving the work stage in the boiler furnace which is moved up and down, the front work stage is assembled and formed in almost the first half of the furnace bottom stage, and the front work stage is temporarily lifted to an appropriate height position. Stop, then assemble and form the rear working stage almost in the latter half of the hearth stage,
At the upper position near the inner end of the rear working stage,
After attaching a lower end of a bellows frame in which a large number of sets of folding legs are stacked and foldably connected, a suspended front working stage is suspended and lowered to the uppermost position of the bellows frame. The upper end of the frame is connected to the bottom position near the inner end of the front work stage, and then the front work stage is first lifted by one stage of the bellows frame,
After launching the folding legs in the uppermost bellows frame,
Connect the brace to the adjacent folding legs, and then
The front work stage is lifted up by one next stage, the folding legs in the bellows frame of the next stage are raised, the braces are connected to the adjacent folding legs and connected, and this is repeated by the number of stages of the bellows frame to repeat the bellows. Construction of a work stage in a boiler furnace, characterized in that the entire frame is started up vertically, and then the entire front work stage and rear work stage are synchronized and lifted to the upper part of the furnace. Moving method.
立て形成し、当該作業ステージをワイヤロープで吊設し
た上で、当該ワイヤロープの巻き上げ機を巻き上げた
り、巻き戻すことで、ボイラ炉内を昇降移動させてなる
ボイラ炉内における作業ステージの構築移動方法におい
て、炉底ステージのほぼ前半部で前側用作業ステージを
組み立て形成し、炉底ステージのほぼ後半部で後部側作
業ステージを組み立て形成し、当該前部側作業ステージ
と後部側作業ステージとを前後に突き合わせて連結し、
連結した作業ステージの上部位置に、折り畳み脚の多数
組を多段に積み上げて折り畳み自在に連結した蛇腹枠の
下端部を取り付け、当該蛇腹枠における最上段の折り畳
み脚を立ち上げた上で、隣合う折り畳み脚に筋交いを差
し渡して連結し、次に、次段位の蛇腹枠における折り畳
み脚を立ち上げた上で、隣合う折り畳み脚に筋交いを差
し渡して連結し、これを蛇腹枠の段数分繰り返すことで
蛇腹枠全体を鉛直状態に立ち上げ、その後、鉛直状態に
立ち上げた蛇腹枠と、前部用作業ステージと後部用作業
ステージの全体を同調させて、炉上方部へ吊り上げるよ
うに構成したことを特徴とするボイラ炉内における作業
ステージの構築移動方法。2. A work stage is assembled and formed at the bottom of the boiler furnace, and the work stage is suspended by a wire rope, and then the wire rope hoist is wound up or rewinded, so that the inside of the boiler furnace is cooled. In the method of constructing and moving the work stage in the boiler furnace which is moved up and down, the work stage for the front side is assembled and formed in almost the first half of the furnace bottom stage, and the rear work stage is assembled and formed in the substantially latter half of the furnace bottom stage. , The front work stage and the rear work stage are connected to each other in front and rear,
At the upper position of the connected work stage, the lower end of a bellows frame in which a large number of sets of folding legs are stacked in multiple stages and connected in a freely foldable manner is attached, and the uppermost folding legs in the bellows frame are raised and then adjacent to each other. By connecting the brace to the folding leg and connecting it, and then raising the folding leg in the next bellows frame, connecting the brace to the adjacent folding leg and connecting it, repeating this for the number of steps of the bellows frame The entire bellows frame is started up in a vertical state, and then the bellows frame, which has been started up in a vertical state, and the entire work stage for the front part and the work part for the rear part are synchronized, and are lifted to the upper part of the furnace. Characteristic method of constructing and moving a work stage in a boiler furnace.
炉天井部の吊り架構にワイヤロープで吊設し、当該ワイ
ヤロープの巻き上げ機を巻き上げたり、巻き戻すこと
で、前記作業ステージがボイラ炉内を昇降移動するよう
に構成してなるボイラ炉内の作業ステージにおいて、前
記作業ステージを前部側作業ステージと後部側作業ステ
ージとで形成し、その内、後部側作業ステージの内側端
部寄りの上部位置と、前部側作業ステージの内側端部寄
りの下部位置との間に、これらの作業ステージの横幅方
向に亙って折り畳み脚を多段に積み上げて連結した蛇腹
枠を介装し、当該蛇腹枠を折り畳んだり、立ち上げて前
部側作業ステージと後部側作業ステージを段付き状態に
構成したことを特徴とするボイラ炉内の作業ステージ。3. A work stage formed in a boiler furnace,
By suspending the wire rope on a suspension frame at the furnace ceiling and hoisting or rewinding the wire rope hoist, the work stage is configured to move up and down in the boiler furnace. In the work stage, the work stage is formed of a front work stage and a rear work stage, of which an upper position near the inner end of the rear work stage and an inner position near the inner end of the front work stage. Between the lower stage and the lower stage, a bellows frame in which folding legs are stacked in multiple stages and connected to each other in the width direction of the work stage is interposed, and the bellows frame is folded or raised to start the front work stage. A work stage in the boiler furnace, wherein the work stage on the rear side is configured to be stepped.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6187496A JP3018061B2 (en) | 1994-08-09 | 1994-08-09 | Work stage in boiler furnace and how to move it |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6187496A JP3018061B2 (en) | 1994-08-09 | 1994-08-09 | Work stage in boiler furnace and how to move it |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH0849405A JPH0849405A (en) | 1996-02-20 |
JP3018061B2 true JP3018061B2 (en) | 2000-03-13 |
Family
ID=16207088
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JP6187496A Expired - Lifetime JP3018061B2 (en) | 1994-08-09 | 1994-08-09 | Work stage in boiler furnace and how to move it |
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JP4843327B2 (en) * | 2006-02-14 | 2011-12-21 | 雅明 五十嵐 | Construction method of temporary scaffolding inside a hollow structure |
JP5814217B2 (en) * | 2012-11-30 | 2015-11-17 | 太平電業株式会社 | How to build a scaffold in a boiler |
JP6514677B2 (en) * | 2016-11-29 | 2019-05-15 | ケイエルイーエス インク.Kles Inc. | In-furnace scaffolding system for boiler maintenance and its installation method |
JP2021042535A (en) * | 2019-09-06 | 2021-03-18 | 三菱パワー株式会社 | Working scaffold installation structure in boiler furnace |
KR102377444B1 (en) * | 2021-03-30 | 2022-03-22 | (주)휴하리 | Construction Method Of Fall Prevention Device For Emergency Maintaining Boiler |
-
1994
- 1994-08-09 JP JP6187496A patent/JP3018061B2/en not_active Expired - Lifetime
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