JP4931649B2

JP4931649B2 - Chimney dismantling method

Info

Publication number: JP4931649B2
Application number: JP2007059411A
Authority: JP
Inventors: 達廣古長; 高徳前田
Original assignee: Okumura Corp
Current assignee: Okumura Corp
Priority date: 2007-03-09
Filing date: 2007-03-09
Publication date: 2012-05-16
Anticipated expiration: 2027-03-09
Also published as: JP2008223249A

Description

本発明は、煙突の解体方法に関し、特にコンクリート造の外筒と、耐火レンガ造の内筒とからなる煙突を解体するための煙突の解体方法に関する。 The present invention relates to a chimney disassembly method, and more particularly to a chimney disassembly method for disassembling a chimney composed of a concrete outer cylinder and a refractory brick inner cylinder.

近年、例えば老朽化したゴミ焼却場を撤去する工事が盛んに行われており、これに伴って、高さの高い中空筒状の塔状構造物である煙突を解体する作業が発生する。煙突は、内部が非常に高温になるので、コンクリート造の外筒の劣化を防止するために、その内側に耐火レンガ造の内筒を形成した２重構造を備えているものが多い。また外筒と内筒との間に隙間を設けて空気層を形成することにより、断熱効果が得られるようにしたものもある。 In recent years, for example, work to remove an aging garbage incinerator has been actively carried out, and along with this, work to dismantle a chimney that is a hollow cylindrical tower-like structure with a high height occurs. Since the chimney is very hot inside, the chimney often has a double structure in which a refractory brick inner cylinder is formed inside to prevent deterioration of the concrete outer cylinder. In some cases, a heat insulating effect can be obtained by forming an air layer by providing a gap between the outer cylinder and the inner cylinder.

例えば煙突を解体した後に、耐火レンガとコンクリートを再資源化する場合、これらを混合した状態で解体すると、後に分別する必要を生じることになり、分別作業に多くの手間を要することから、耐火レンガとコンクリートを予め分別して解体する必要がある。分別解体の方法としては、例えば内筒を構成する耐火レンガを先行して上部から解体し、煙突内の下部に落として撤去した後に、コンクリート造の外筒を上部から解体して撤去するといった作業手順で行われることになる。 For example, when recycling refractory bricks and concrete after dismantling the chimney, disassembling them in a mixed state will result in the need to separate them later. It is necessary to separate and dismantle concrete in advance. As a method of separation and dismantling, for example, refractory bricks constituting the inner cylinder are dismantled from the top first, dropped into the lower part of the chimney and removed, and then the concrete outer cylinder is dismantled from the upper part and removed It will be done in the procedure.

また、このような耐火レンガ造の内筒の解体作業やコンクリート造の外筒の解体作業は、高所作業となると共に、作業中に粉塵が飛散し易く、ダイオキシンによる汚染の可能性もあることから、人力作業によって行うことは一般に困難である。したがって、機械を遠隔操作することによって耐火レンガやコンクリートを解体するための装置や方法が種々開発されている（例えば、特許文献１，特許文献２，特許文献３，特許文献４参照）。
特開２００４−１７６９９６号公報特開２００５−２６５３３８号公報特公平５−５０２１号公報特開２００６−６８６０１号公報 In addition, the dismantling work of the refractory brick inner cylinder and the concrete outer cylinder is a work at a high place, dust is likely to be scattered during the work, and there is a possibility of contamination by dioxins. Therefore, it is generally difficult to perform by manual work. Therefore, various devices and methods for dismantling refractory bricks and concrete by remotely operating the machine have been developed (see, for example, Patent Document 1, Patent Document 2, Patent Document 3, and Patent Document 4).
JP 2004-176996 A JP 2005-265338 A Japanese Patent Publication No. 5-5021 JP 2006-68601 A

一方、耐火レンガ造の内筒の解体作業とコンクリート造の外筒の解体作業は、別々の解体装置を用いて各々行われていたが、これらの解体装置を駆動するための、例えば駆動用の電源装置、油圧ポンプ、遠隔操縦装置等を含む駆動部の構成は、共通する部分も多い。また、煙突の解体現場で、解体対象物である煙突に対して、一連の作業工程に従って一台の揚重機を用いて解体作業を行ってゆくことにより、段取り替えを少なくして効率良く煙突を解体してゆくことが可能になるものと考えられる。 On the other hand, the dismantling work of the refractory brick inner cylinder and the dismantling work of the concrete outer cylinder were each performed using separate dismantling devices. For example, for driving these dismantling devices, The configuration of the drive unit including the power supply device, the hydraulic pump, the remote control device, etc. has many common parts. In addition, at the chimney demolition site, the chimney that is the object to be demolished is disassembled using a single lifting machine according to a series of work steps, so that the chimney can be efficiently removed with fewer setup changes. It will be possible to dismantle.

本発明は、このような技術的課題に着目してなされたものであり、耐火レンガ造の内筒の解体作業とコンクリート造の外筒の解体作業を、解体装置の駆動部を共用しつつ、一連の作業工程に従って一台の揚重機を用いて効率良く行ってゆくことのできる煙突の解体方法を提供することを目的とする。 The present invention has been made paying attention to such a technical problem, dismantling work of the refractory brick inner cylinder and dismantling work of the concrete outer cylinder, while sharing the drive unit of the dismantling device, An object of the present invention is to provide a method for disassembling a chimney that can be efficiently performed using a single lifting machine according to a series of work steps.

本発明は、コンクリート造の外筒と、耐火レンガ造の内筒とからなる煙突を、駆動用架台の上方に少なくとも駆動用の電源装置と油圧ポンプと遠隔操縦装置とを搭載すると共に、前記駆動用架台の下方に当該駆動用架台に対して回転可能に設けられた回転接続台を備え、揚重機から昇降可能に吊り下げて用いられる駆動本体部を有する煙突解体装置により、前記駆動本体部に耐火レンガ解体装置とコンクリート解体装置とを着脱交換可能に取り付けて煙突の解体を行う煙突の解体方法であって、地上において前記駆動本体部の回転接続台に前記耐火レンガ解体装置を取り付け、前記揚重機により吊り上げて、前記煙突の内部に挿入しつつ前記耐火レンガ解体装置により前記内筒を解体し、解体した耐火レンガを前記煙突の内部に落下させながら前記内筒を上部から順次解体する内筒解体工程と、地上において前記駆動本体部の回転接続台に前記コンクリート解体装置を前記耐火レンガ解体装置と交換して取り付け、前記揚重機により吊り上げて、前記内筒が先行して解体された部分の外筒を前記コンクリート解体装置により解体し、解体したコンクリートを前記煙突の内部に落下させながら前記外筒を上部から順次解体する外筒解体工程とを含む煙突の解体方法を提供することにより、上記目的を達成したものである。 The present invention has a chimney composed of a concrete outer cylinder and a refractory brick inner cylinder, and at least a power supply device for driving, a hydraulic pump, and a remote control device are mounted above the drive base, and the drive A chimney demolition device having a drive main body portion that is provided below the gantry and is provided with a rotary connection base that is rotatable with respect to the drive gantry and that can be lifted and lowered from a lifting machine. A chimney dismantling method in which a firebrick dismantling device and a concrete dismantling device are detachably attached to disassemble a chimney, wherein the firebrick dismantling device is attached to a rotary connection base of the drive body unit on the ground, While lifting with a heavy machine, inserting the inside of the chimney, dismantling the inner cylinder with the firebrick demolition device, and dropping the dismantled firebrick into the chimney An inner cylinder disassembling step for disassembling the inner cylinder sequentially from the upper part, and replacing the concrete dismantling device with the refractory brick disassembling device on the rotary connection base of the drive main body unit on the ground, lifting by the lifting machine, An outer cylinder disassembling step of disassembling the outer cylinder of the portion where the inner cylinder is disassembled in advance by the concrete demolition apparatus, and disassembling the outer cylinder sequentially from the top while dropping the demolished concrete into the chimney. The above object is achieved by providing a method for disassembling a chimney.

そして、本発明の煙突の解体方法では、前記耐火レンガ解体装置は、煙突の横断方向に沿って背向して伸縮すると共に、先端に耐火レンガの解体部材が取り付けられた少なくとも一対の伸縮棒状部材を含む解体装置本体を備えており、前記内筒解体工程において、前記外筒の上端に近接する前記内筒の上端部分に対しては、前記解体部材として鍬状部材を用い、前記外筒と前記内筒との間の隙間にフック部分を上方から挿入係止して、前記伸縮棒状部材を収縮しつつ内側に引き倒すことにより前記耐火レンガを解体し、前記外筒の上端と離れた前記内筒の上端部分より下方の部分に対しては、前記解体部材として楔状部材を用い、前記伸縮棒状部材を伸張しつつ前記楔状部材の先端を前記耐火レンガの目地部に食い込ませて、上下の耐火レンガを分離させることにより前記耐火レンガを解体することが好ましい。 And in the chimney dismantling method of the present invention, the refractory brick dismantling device expands and contracts along the transverse direction of the chimney, and at least a pair of telescopic rod-like members having a refractory brick dismantling member attached to the tip. In the inner cylinder disassembling step, for the upper end portion of the inner cylinder close to the upper end of the outer cylinder, a bowl-shaped member is used as the dismantling member, and the outer cylinder and The hook part is inserted and locked into the gap between the inner cylinder from above, and the firebrick is disassembled by pulling inward while contracting the telescopic rod-like member, and separated from the upper end of the outer cylinder For the portion below the upper end portion of the inner cylinder, a wedge-shaped member is used as the dismantling member, and the tip of the wedge-shaped member is bitten into the joint portion of the refractory brick while extending the telescopic rod-shaped member. Fireproof len It is preferred to dismantle the refractory bricks by separating.

また、本発明の煙突の解体方法では、前記耐火レンガ解体装置は、煙突の横断方向に沿って背向して伸縮すると共に、先端に耐火レンガの解体部材として楔状部材が取り付けられた少なくとも一対の伸縮棒状部材を含む解体装置本体を備えており、前記内筒解体工程において、前記伸縮棒状部材を伸張して前記楔状部材の先端を前記耐火レンガの目地部に食い込ませることにより、該楔状部材が食い込んだ目地部よりも上層の耐火レンガを、当該楔状部材が食い込んだ目地部の両側部分の目地部を介して上下に階段状に分離させることにより前記耐火レンガを解体することが好ましい。 Further, in the chimney dismantling method of the present invention, the refractory brick disassembling device extends and retracts along the transverse direction of the chimney, and at least a pair of wedge-shaped members attached as refractory brick dismantling members at the tip. A disassembling apparatus main body including an expansion rod-shaped member, and in the inner cylinder disassembly step, the wedge-shaped member is formed by extending the expansion rod-shaped member and causing the tip of the wedge-shaped member to bite into the joint portion of the refractory brick. It is preferable to dismantle the refractory bricks by separating the refractory bricks higher than the bite joints in a stepwise manner up and down through the joints on both sides of the joints bitten by the wedge-shaped member.

本発明の煙突の解体方法によれば、耐火レンガ造の内筒の解体作業とコンクリート造の外筒の解体作業を、解体装置の駆動部を共用しつつ、一連の作業工程に従って一台の揚重機を用いて効率良く行ってゆくことができる。 According to the chimney dismantling method of the present invention, the dismantling work of the refractory brick inner cylinder and the dismantling work of the concrete outer cylinder are performed in accordance with a series of work steps while sharing the drive unit of the dismantling apparatus. We can go efficiently using heavy machinery.

本発明の好ましい一実施形態に係る煙突の解体方法は、例えば老朽化したゴミ焼却場において解体される煙突として、図１（ａ）に示すような例えば高さが４５ｍ程度の中空筒状の塔状構造物である煙突１０を撤去する際に、当該煙突１０を、解体装置の駆動部を共用しつつ、一連の作業工程に従って一台の揚重機を用いて効率良く分別解体できるようにするために採用されたものである。すなわち、煙突１０は、図１（ｂ），（ｃ）にも示すように、鉄筋コンクリート造の外筒１３の内側に、空気層を形成する隙間１４を介在させて、耐火レンガ１１を積み上げることにより構成される耐火レンガ造の内筒１２を設けた二重構造を備えており、内筒１２及び隙間１４によって、煙突１０の内部が高温になることによる外筒１３の劣化を効果的に防止できるようになっている。また、本実施形態では、煙突１０は、下部から上部に向かってその外径を僅かに減少させてゆく形状を有しており、例えばその下端部分の外径が５１００ｍｍ、上端部分の外径が３６８０ｍｍ程度の大きさとなっている。これに伴なって、外筒１３は、例えばその下端部分の厚さＴ₁が３５０ｍｍ、上端部分の厚さＴ₂が１５０ｍｍとなっており、内筒１２は、例えばその下端部分の厚さｔ₁が２３０ｍｍ、上端部分の厚さｔ₂が１１５ｍｍとなっている。 A chimney dismantling method according to a preferred embodiment of the present invention is, for example, a hollow cylindrical tower having a height of, for example, about 45 m as shown in Fig. 1 (a) as a chimney to be dismantled in an aging garbage incinerator. When removing the chimney 10 which is a structure, the chimney 10 can be separated and disassembled efficiently using a single lifting machine according to a series of work steps while sharing the drive unit of the dismantling device. It was adopted. That is, as shown in FIGS. 1B and 1C, the chimney 10 is constructed by stacking the refractory bricks 11 with the gaps 14 forming an air layer interposed inside the outer cylinder 13 made of reinforced concrete. It has a double structure provided with a constructed refractory brick inner cylinder 12, and the inner cylinder 12 and the gap 14 can effectively prevent deterioration of the outer cylinder 13 due to the high temperature inside the chimney 10. It is like that. In the present embodiment, the chimney 10 has a shape in which the outer diameter is slightly reduced from the lower part toward the upper part. For example, the outer diameter of the lower end part is 5100 mm, and the outer diameter of the upper end part is The size is about 3680 mm. Accordingly, the outer cylinder 13 has, for example, a lower end portion thickness T ₁ of 350 mm and an upper end portion thickness T ₂ of 150 mm, and the inner cylinder 12 has, for example, a lower end portion thickness t thereof. ₁ is 230 mm, and the thickness t ₂ of the upper end portion is 115 mm.

このような煙突１０は、鉄筋コンクリート造の外筒１３と耐火レンガ造の内筒１２とを同時に解体すると、これらを再資源化する際に、分別作業に多くの手間を要することから、図２（ａ），（ｂ）に示すように、煙突解体装置５０の駆動本体部２２に耐火レンガ解体装置１５を取り付けて行なう内筒解体工程と、煙突解体装置５０の駆動本体部２２にコンクリート解体装置３２を取り付けて行なう外筒解体工程とを、揚重機２１から吊り下げられる駆動本体部２２を共用しつつ、一連の作業工程として行って効率良く煙突１０を分別解体してゆくために、本実施形態の煙突の解体方法が採用されたものである。 When such a chimney 10 disassembles the outer cylinder 13 made of reinforced concrete and the inner cylinder 12 made of refractory brick at the same time, it takes a lot of time for the separation work to recycle them. As shown in a) and (b), an inner cylinder dismantling step performed by attaching the refractory brick dismantling device 15 to the drive main body portion 22 of the chimney demolition device 50, and a concrete demolition device 32 in the drive main body portion 22 of the chimney demolition device 50. In this embodiment, the outer cylinder disassembling step performed by attaching the hoist is performed as a series of work steps while sharing the drive main body 22 suspended from the lifting machine 21 to efficiently separate and disassemble the chimney 10. The chimney dismantling method was adopted.

すなわち、本実施形態の煙突の解体方法は、図３（ａ），（ｂ）及び図８にも示すように、鉄筋コンクリート造の外筒１３と、耐火レンガ造の内筒１２とからなる煙突１０を、駆動用架台１６の上方に少なくとも駆動用の電源装置１７と油圧ポンプ１８と無線操縦装置（遠隔操縦装置）１９とを搭載すると共に、駆動用架台１６の下方に当該駆動用架台１６に対して回転可能に設けられた回転接続台２０を備え、揚重機２１から昇降可能に吊り下げて用いられる駆動本体部２２を有する煙突解体装置５０により、駆動本体部２２に耐火レンガ解体装置１５とコンクリート解体装置３２とを着脱交換可能に取り付けて煙突１０の解体を行う解体方法である。そして、本実施形態の煙突の解体方法は、地上において駆動本体部２２の回転接続台２０に耐火レンガ解体装置１５を取り付け、揚重機２１により吊り上げて、煙突１０の内部に挿入しつつ耐火レンガ解体装置１５により内筒１２を解体し、解体した耐火レンガ１１を煙突１０の内部に落下させながら内筒１２を上部から順次解体する内筒解体工程と、地上において駆動本体部２２の回転接続台２０にコンクリート解体装置３２を耐火レンガ解体装置１５と交換して取り付け、揚重機２１により吊り上げて、内筒１２が先行して解体された部分の外筒１３をコンクリート解体装置３２により解体し、解体したコンクリートを煙突１０の内部に落下させながら外筒１３を上部から順次解体する外筒解体工程とを含んでいる。 That is, the chimney disassembly method of the present embodiment includes a chimney 10 comprising an outer cylinder 13 made of reinforced concrete and an inner cylinder 12 made of refractory brick as shown in FIGS. 3 (a), 3 (b) and FIG. At least a power supply device 17 for driving, a hydraulic pump 18, and a radio control device (remote control device) 19 are mounted above the drive base 16 and to the drive base 16 below the drive base 16. The chimney demolition device 50 including the drive main body portion 22 that is provided so as to be rotatable and can be lifted and lowered from the lifting machine 21 is used for the refractory brick demolition device 15 and the concrete. This is a dismantling method in which the chimney 10 is disassembled by attaching the dismantling device 32 so as to be detachable and replaceable. The chimney dismantling method of this embodiment attaches the refractory brick demolition device 15 to the rotary connection base 20 of the drive main body 22 on the ground, lifts it with the lifting machine 21, and inserts it into the chimney 10 while disassembling the refractory brick. The inner cylinder 12 is disassembled by the device 15 and the disassembled firebrick 11 is dropped into the chimney 10 while the inner cylinder 12 is sequentially disassembled from the upper part, and the rotary connection base 20 of the drive main body 22 on the ground. The concrete demolition device 32 is replaced with the refractory brick demolition device 15 and attached, and is lifted by the lifting machine 21, and the outer cylinder 13 of the portion where the inner cylinder 12 is first disassembled is disassembled by the concrete demolition device 32 and disassembled. An outer cylinder disassembling step of sequentially disassembling the outer cylinder 13 from above while dropping concrete into the chimney 10.

本実施形態に用いる煙突解体装置５０を構成する駆動本体部２２は、例えば特開２００６−６８６０１号公報に記載されるように、作業用重機として例えばバックフォーを改造して形成されたものであり、当該バックフォーの走行体を取り外した後の、旋回リングを含むこれの上方部分によって、その基本構造が構成されている。すなわち、バックフォーの旋回リングが駆動本体部２２の回転接続台２０として転用されると共に、旋回リングに対して相対回転する、駆動用の電源装置、エンジン、油圧ポンプ、操作室等を搭載した旋回台が、駆動本体部２２の駆動用架台１６として転用されることになる（図３（ａ），（ｂ）及び図８参照）。旋回台は、駆動用の電源装置、油圧ポンプ等を残置したまま、例えば操作室や、ブーム、バケット等を取り外すと共に、無線操縦装置１９や、吊り治具３１等を取り付けることにより、少なくとも駆動用の電源装置１７と油圧ポンプ１８と無線操縦装置１９とを搭載する駆動用架台１６に改造される。この駆動用架台１６は、旋回リングによる回転接続台２０と共に、吊り治具３１を介してクローラクレーンやレッカー等の揚重機２１から吊り下げ可能な駆動本体部２２を構成する。なお、耐火レンガ１１の解体は煙突１０の内部での作業になるため、駆動本体部２２の最大外径は煙突１０の外筒１３の内径よりも小さくなっている。また、駆動用架台１６には、散水設備３０（図８参照）を取り付けておくこともできる。散水設備３０の液槽は着脱可能となっており、駆動用架台１６に耐火レンガ解体装置１５を取り付けて使用する場合には、装置をなるべく小さくするために、液槽を取り外して用いることが好ましい。 The drive main body 22 constituting the chimney demolition apparatus 50 used in the present embodiment is formed by modifying a back for example as a work heavy machine, as described in, for example, JP-A-2006-68601. The basic structure is constituted by the upper portion including the turning ring after the traveling body of the backfor is removed. In other words, a turning ring equipped with a driving power supply device, an engine, a hydraulic pump, an operation chamber, etc., which is diverted as the rotary connection base 20 of the drive main body 22 and is rotated relative to the turning ring. The base is diverted as the drive base 16 of the drive main body 22 (see FIGS. 3A, 3B and 8). The swivel stand is at least for driving by removing the operation room, boom, bucket, etc., and attaching the radio control device 19, the hanging jig 31, etc. while leaving the driving power supply device, hydraulic pump, etc. The power supply device 17, the hydraulic pump 18, and the radio control device 19 are modified to a drive base 16. The drive base 16 together with the rotary connection base 20 using a swivel ring constitutes a drive main body 22 that can be suspended from a lifting machine 21 such as a crawler crane or a tow truck via a suspension jig 31. In addition, since the dismantling of the refractory brick 11 is performed in the chimney 10, the maximum outer diameter of the drive main body 22 is smaller than the inner diameter of the outer cylinder 13 of the chimney 10. Further, the watering facility 30 (see FIG. 8) can be attached to the drive base 16. The liquid tank of the watering facility 30 is detachable, and when the firebrick demolition device 15 is attached to the drive base 16 for use, it is preferable to remove and use the liquid tank in order to make the apparatus as small as possible. .

また、本実施形態では、旋回リングによる回転接続台２０は、当該回転接続台２０を構成する短筒部２０ａの内周面に形成した内歯車に、駆動用架台１６に設けた回転駆動モータ（図示せず）の回転軸に固着した歯車を内側から歯合させることにより、回転駆動モータの回転によって駆動用架台１６に対して相対回転するようになっている（特開２００６−６８６０１号公報参照）。回転接続台２０は、短筒部２０ａの下部外周面がリブ付き環状補強部材２０ｂによって補強されると共に、短筒部２０ａ及びリブ付き環状補強部材２０ｂの下端面に溶接等により接合一体化されて、中央が開口部となった接合プレート２０ｃが取り付けられている。 Further, in the present embodiment, the rotary connection base 20 by the swivel ring is a rotary drive motor (provided on the drive base 16 on the internal gear formed on the inner peripheral surface of the short cylindrical portion 20a constituting the rotary connection base 20). A gear fixed to a rotation shaft (not shown) is engaged from the inside to rotate relative to the drive base 16 by rotation of the rotary drive motor (see Japanese Patent Laid-Open No. 2006-68601). ). The rotary connection base 20 has a lower outer peripheral surface of the short cylindrical portion 20a reinforced by a ribbed annular reinforcing member 20b, and is joined and integrated to the lower end surfaces of the short cylindrical portion 20a and the ribbed annular reinforcing member 20b by welding or the like. A joining plate 20c having an opening at the center is attached.

さらに、本実施形態では、回転接続台２０には、回転中心を含む中央部分に、短筒部２０ａの内側中空部及び接合プレート２０ｃの中央の開口部による挿通開口が形成されており、この挿通開口を介して、駆動用架台１６の上方に搭載された機器と、駆動本体部２２に取付けられた耐火レンガ解体装置１５等とを接続する配管や配線が配設される。また回転接続台２０の接合プレート２０ｃには、耐火レンガ解体装置１５と交換して鉄筋コンクリート造の外筒１３を解体するコンクリート解体装置３２を取付ける際に、当該コンクリート解体装置３２を着脱可能に強固に支持固定するための、ピン孔が形成された厚板リブプレート状の吊下金物３３が、下方に突出して設けられている。 Further, in the present embodiment, the rotary connection base 20 is formed with an insertion opening formed by an inner hollow portion of the short cylindrical portion 20a and a central opening portion of the joining plate 20c in a central portion including the rotation center. Via the opening, piping and wiring for connecting the device mounted above the drive base 16 and the firebrick demolition device 15 attached to the drive main body 22 are disposed. Further, when the concrete dismantling device 32 for disassembling the outer cylinder 13 made of reinforced concrete is attached to the joining plate 20c of the rotary connection base 20, the concrete dismantling device 32 is detachably and firmly attached. A thick-plate rib-plate-like hanging hardware 33 in which pin holes are formed for supporting and fixing is provided so as to protrude downward.

上述の構成を有する駆動本体部２２は、図２（ａ）に示すように、耐火レンガ解体装置１５と共に吊り治具３１（図３参照）を介して揚重機２１から吊り下げられた状態で、煙突１０の上端開口の上方に搬送されると共に、上端開口からこれの内部に逐次挿入されて、耐火レンガ造の内筒１２の解体作業に供される。また、内筒１２を先行して解体したら、駆動本体部２２は、地上においてコンクリート解体装置３２を耐火レンガ解体装置１５と着脱交換して取り付け直し、図２（ｂ）に示すように、コンクリート解体装置３２と共に吊り治具３１を介して揚重機２１から吊り下げられた状態で、煙突１０の上方に搬送されると共に、煙突１０の上端から鉄筋コンクリート造の外筒１３をコンクリート解体装置３２によって順次解体する作業に供される。 As shown in FIG. 2A, the drive main body 22 having the above-described configuration is suspended from the lifting machine 21 via the suspension jig 31 (see FIG. 3) together with the firebrick demolition device 15. While being conveyed above the upper end opening of the chimney 10, it is sequentially inserted into the inside from the upper end opening and used for the dismantling work of the inner cylinder 12 made of refractory bricks. When the inner cylinder 12 is disassembled in advance, the drive main body 22 reattaches the concrete dismantling device 32 with the refractory brick dismantling device 15 on the ground, and reattaches the concrete dismantling device as shown in FIG. While being hung from the lifting machine 21 via the lifting jig 31 together with the device 32, it is transported above the chimney 10, and the reinforced concrete outer cylinder 13 is sequentially dismantled from the upper end of the chimney 10 by the concrete demolition device 32. Served to work.

そして、駆動本体部２２と共に煙突解体装置５０を構成する耐火レンガ解体装置１５は、図３〜図７に示すように、連結架台２３と解体装置本体２４とによって構成される。また、連結架台２３は、図４（ａ），（ｂ）及び図５に示すように、駆動本体部２２の回転接続台２０に接続連結される接続架台２５と、この接続架台２５の下方に設けられる解体装置支持架台２６と、解体装置支持架台２６と接続架台２５とを上下に所定の間隔を保持した状態で連結一体化する少なくとも３本（本実施形態では４本）の脚柱フレーム２７とからなる。なお、図３（ａ），（ｂ）における連結架台２３と、図４（ａ），（ｂ）における連結架台２３は、便宜上、４５°ずれた側面方向から見た状態で描かれている。 And the firebrick demolition apparatus 15 which comprises the chimney demolition apparatus 50 with the drive main-body part 22 is comprised by the connection mount frame 23 and the demolition apparatus main body 24, as shown in FIGS. Further, as shown in FIGS. 4A, 4 </ b> B, and 5, the connection base 23 is connected to the rotary connection base 20 of the drive main body 22, and below the connection base 25. The dismantling device support gantry 26, the dismantling device support gantry 26, and the connection gantry 25 that are provided are linked and integrated at a predetermined distance up and down with at least three (four in this embodiment) pedestal frame 27. It consists of. 3 (a) and 3 (b) and the connection platform 23 in FIGS. 4 (a) and 4 (b) are depicted in a state viewed from the side direction shifted by 45 ° for convenience.

連結架台２３の接続架台２５は、脚柱フレーム２７の上端部に接合一体化された、例えばＨ形鋼、山形鋼、溝形鋼等による接続架台フレーム２５ａと、接続架台フレーム２５ａの天端部に平坦な天面を形成するように接合された上部架台プレート２５ｂとからなる。上部架台プレート２５ｂには、その中央部分における回転接続台２０の接合プレート２０ｃの開口部と上下に重なって配置される位置に、配管、配線用の上部開口部２５ｃが開口形成されている。また、上部架台プレート２５ｂには、当該上部架台プレート２５ｂを駆動本体部２２の回転接続台２０の下端面に重ね合わせるようにして連結架台２３を駆動本体部２２に連結接続する際に、回転接続台２０の接合プレート２０ｃから下方に突出するコンクリート解体装置３２を支持固定するための吊下金物３３を緩衝させることなく挿入配置するための、縦長矩形形状の挿入開口部２５ｄが、吊下金物３３と対応する位置に複数開口形成されている。 The connection frame 25 of the connection frame 23 is joined and integrated to the upper end of the pedestal frame 27, for example, a connection frame 25a made of H-shaped steel, angle steel, grooved steel, or the like, and the top end of the connection frame 25a. And an upper frame plate 25b joined to form a flat top surface. An upper opening 25c for piping and wiring is formed in the upper frame plate 25b at a position where it overlaps with the opening of the joining plate 20c of the rotary connection base 20 in the central portion. Further, the upper gantry plate 25b is connected to the upper gantry plate 25b when the linking gantry 23 is connected to the drive main body 22 so that the upper gantry plate 25b is superimposed on the lower end surface of the rotary connection pedestal 20 of the drive main body 22. An insertion opening 25d having a vertically long rectangular shape for inserting and arranging the hanging metal 33 for supporting and fixing the concrete dismantling device 32 protruding downward from the joining plate 20c of the table 20 without buffering is provided on the hanging metal 33. A plurality of openings are formed at positions corresponding to.

さらに、本実施形態では、接続架台２５の接続架台フレーム２５ａには、４本の脚柱フレーム２７のうちの対角方向に配置された一方の一対の脚柱フレーム２７との接合部分に配置されて、ピン孔付きの各一対の連結リブプレート３６が、外側に突出して２箇所に設けられている。連結架台２３を介して耐火レンガ解体装置１５を駆動本体部２２に連結接続する際に、回転接続台２０の接合プレート２０ｃの周縁部における径方向に対向する位置に下方に突出して設けられたピン孔付きの駆動部連結リブプレート３７を、各一対の連結リブプレート３６の間に各々挿入配置してピン孔に連結ピンを挿通することにより、耐火レンガ解体装置１５を駆動本体部２２に着脱可能な状態で容易に連結することが可能になる。 Further, in the present embodiment, the connection frame 25a of the connection frame 25 is disposed at a joint portion between one of the four columnar frames 27 and one pair of columnar frames 27 disposed in a diagonal direction. Each pair of connecting rib plates 36 with pin holes protrudes outward and is provided at two locations. When the refractory brick dismantling device 15 is connected and connected to the drive main body portion 22 via the connection stand 23, a pin provided to protrude downward at a position facing the radial direction in the peripheral edge portion of the joining plate 20c of the rotary connection stand 20 The refractory brick dismantling device 15 can be attached to and detached from the drive main body 22 by inserting and arranging the drive portion connecting rib plates 37 with holes between the pair of connecting rib plates 36 and inserting the connecting pins through the pin holes. It becomes possible to connect easily in a state.

連結架台２３の解体装置支持架台２６は、脚柱フレーム２７の上下方向中間部分に接合一体化された、例えばＨ形鋼、山形鋼、溝形鋼等による支持架台フレーム２６ａと、支持架台フレーム２６ａの下端部に平坦な底面を形成するように接合された中間支持プレート２６ｂとからなる。中間支持プレート２６ｂには、その中央部分における上部架台プレート２５ｂの上部開口部２５ｃと上下に重なって配置される位置に、配管、配線用の中間開口部２６ｃが開口形成されている。また中間支持プレート２６ｂに支持させて、これの上面にバルブボックスカバー３４が設けられており、このバルブボックスカバー３４の内側には、解体装置本体２４の伸縮棒状部材２９を伸縮駆動させるためのバルブボックスが収納される。 The dismantling device support frame 26 of the connection frame 23 is joined and integrated with an intermediate portion in the vertical direction of the pedestal frame 27, for example, a support frame 26a made of H-shaped steel, angle steel, channel steel, and the like, and the support frame 26a. And an intermediate support plate 26b joined to form a flat bottom surface at the lower end portion. An intermediate opening 26c for piping and wiring is formed in the intermediate support plate 26b at a position where it is disposed so as to overlap with the upper opening 25c of the upper frame plate 25b in the central portion. Further, a valve box cover 34 is provided on the upper surface of the intermediate support plate 26b so as to be supported by the intermediate support plate 26b. Inside the valve box cover 34, a valve for driving the telescopic rod member 29 of the dismantling device body 24 to extend and contract. The box is stored.

さらに、本実施形態では、解体装置支持架台２６の支持架台フレーム２６ａは、例えば４本の脚柱フレーム２７を連結するようにして正方形状に配置される外周フレーム部３８と、脚柱フレーム２７が接合される外周フレーム部３８の角部を結ぶ一対の対角線方向に沿って配置される十字フレーム部３９とからなる（図５参照）。また解体装置支持架台２６の中間支持プレート２６ｂから下方に突出して、突出長さが短い一対の第１本体吊下げ金具３５ａと、突出長さが長い一対の第２本体吊下げ金具３５ｂとが、中間開口部２６ｃを挟んだ径方向に対向する位置に各々設けられている。ここで、一対の第１本体吊下げ金具３５ａには、後述する２段で且つ十字形状に配置されるニ対の伸縮棒状部材２９のうち、上段に配置される一方の一対の伸縮棒状部材２９が連結支持され、一対の第２本体吊下げ金具３５ｂには、下段に配置される他方の一対の伸縮棒状部材２９が連結支持される。 Furthermore, in this embodiment, the support frame 26a of the dismantling device support frame 26 includes an outer peripheral frame portion 38 arranged in a square shape so as to connect, for example, four pedestal frames 27, and a pedestal frame 27. It comprises a pair of cross frame portions 39 arranged along a diagonal direction connecting the corner portions of the outer peripheral frame portions 38 to be joined (see FIG. 5). Further, a pair of first main body hanging brackets 35a projecting downward from the intermediate support plate 26b of the dismantling device support base 26 and having a short projecting length, and a pair of second main body hanging brackets 35b having a long projecting length, It is provided at a position facing each other in the radial direction across the intermediate opening 26c. Here, the pair of first main body hanging brackets 35a has one pair of telescopic rod-shaped members 29 arranged in the upper stage among two pairs of telescopic rod-shaped members 29 disposed in a cross shape in two stages to be described later. Are connected and supported by the pair of second main body hanging brackets 35b.

本実施形態では、支持架台フレーム２６ａは、接続架台２５の接続架台フレーム２５ａ及び解体装置支持架台２６の支持架台フレーム２６ａと溶接等により連結一体化されて、連結架台２３を構成する強固な骨組み構造を形成すると共に、解体装置支持架台２６と接続架台２５との間に上下方向に所定の間隔を保持する。ここで、解体装置支持架台２６と接続架台２５との間に保持すべき所定の間隔は、例えば解体装置支持架台２６で支持した解体装置本体２４の解体部材２８によって内筒１２の耐火レンガ１１を解体する際に、解体した耐火レンガ１１の解体片や破砕片等を、接続架台２５に衝突させることなく下方に落下させることが可能な高さである。このような解体装置支持架台２６と接続架台２５との間に保持される所定の間隔は、伸縮棒状部材２９の各伸縮工程で解体される耐火レンガ１１の設計層数に応じて、例えば８〜１０層分（５６〜７０ｃｍ）の間隔として設定することが好ましい。また、解体装置支持架台２６と接続架台２５との間に保持される所定の間隔は、伸縮棒状部材２９の各伸縮工程で解体される耐火レンガ１１の想定される楔状部材２８ａを食い込ませる目地部４１ａから耐火レンガ１１の上端１２ａまでの距離に応じて設定されることが好ましい（図１０参照）。なお、上記記載における伸縮棒状部材２９の各伸縮工程は、例えば解体部材２８として後述する楔状部材２８ａを用いた場合に、伸縮棒状部材２９を収縮した状態から伸張させて、耐火レンガ１１の目地部４１（図１０参照）に楔状部材２８ａを食い込ませることにより、当該楔状部材２８ａが食い込んだ目地部４１よりも上方の耐火レンガ１１を解体するまでの各工程を意味する。 In the present embodiment, the support frame 26a is connected and integrated with the connection frame 25a of the connection frame 25 and the support frame 26a of the dismantling device support frame 26 by welding or the like, so as to form a strong frame structure that constitutes the connection frame 23. And a predetermined distance in the vertical direction is maintained between the dismantling device support frame 26 and the connection frame 25. Here, the predetermined interval to be held between the dismantling device support gantry 26 and the connection gantry 25 is, for example, the refractory brick 11 of the inner cylinder 12 by the dismantling member 28 of the dismantling device body 24 supported by the dismantling device support gantry 26. At the time of dismantling, the dismantling pieces and the crushing pieces of the dismantling firebrick 11 can be dropped downward without colliding with the connection frame 25. The predetermined interval held between the dismantling device support gantry 26 and the connection gantry 25 is, for example, 8 to 8 depending on the number of design layers of the refractory brick 11 to be dismantled in each expansion and contraction process of the expansion rod member 29. It is preferable to set as an interval of 10 layers (56 to 70 cm) . In addition, the predetermined interval held between the dismantling device support frame 26 and the connection frame 25 is a joint portion that bites in the assumed wedge-shaped member 28a of the refractory brick 11 disassembled in each expansion / contraction process of the expansion / contraction rod-shaped member 29. It is preferable to set according to the distance from 41a to the upper end 12a of the refractory brick 11 (refer FIG. 10). In addition, each expansion | extension process of the expansion-contraction rod-shaped member 29 in the said description is extended from the state which contracted the expansion-contraction rod-shaped member 29, for example, when the wedge-shaped member 28a mentioned later is used as the disassembly member 28, and the joint part of the firebrick 11 41 (refer FIG. 10) means each process until the wedge-shaped member 28a bites in and the fire brick 11 above the joint part 41 which the wedge-shaped member 28a bites in is dismantled.

解体装置支持架台２６と接続架台２５との間に、このような所定の間隔を保持することにより、接続架台２５や駆動用架台１６に取付けた機器を損傷させることなく、解体した耐火レンガ１１の解体片や破砕片等を、煙突１０内の下方にスムーズに落下させることが可能になる。またこれによって、連結架台２３の接続架台２５に、解体装置本体２４による耐火レンガの解体作業の状況を撮影して監視するためのテレビカメラ及び照明器具を、安定した状態で取付けることが可能になり、解体作業を把握しやすい解体装置本体２４の直上部分から、駆動本体部２２によって遮られることなく、作業状況を効果的に撮影することが可能になる。 By maintaining such a predetermined distance between the dismantling device support base 26 and the connection base 25, the dismantling of the fireproof brick 11 that has been dismantled without damaging the equipment attached to the connection base 25 or the driving base 16. It is possible to smoothly drop the dismantled pieces, crushed pieces, and the like downward in the chimney 10. This also makes it possible to stably attach a television camera and a lighting fixture for photographing and monitoring the state of the demolition work of the refractory bricks by the demolition device body 24 to the connection frame 25 of the connection frame 23. Thus, it is possible to effectively shoot the work situation without being blocked by the drive main body 22 from the portion directly above the dismantling apparatus main body 24 where it is easy to grasp the dismantling work.

連結架台２３と共に耐火レンガ解体装置１５を構成する解体装置本体２４は、図６及び図７（ａ），（ｂ）に示すように、先端に耐火レンガ１１の解体部材２８が取り付けられた少なくとも一対（本実施形態では２対）の伸縮棒状部材２９からなる。伸縮棒状部材２９は、例えば油圧シリンダ４０を介してその伸縮が駆動制御されるようになっており、また伸縮棒状部材２９は、その先端に、解体部材２８として、耐火レンガ１１の目地部４１（図１０参照）に食い込ませるための楔状部材２８ａを備えている。さらに、各一対の伸縮棒状部材２９は、第１連結バンド部材４２ａ及第２連結バンド部材４２ｂを介して、楔状部材２８ａを反対側に配置しつつ各々平行に並べた状態で連結一体化されることにより、連結架台２３と共に煙突１０の内部に吊り下げられた際に、煙突１０の横断方向に沿って略径方向に背向して伸縮することになる。 As shown in FIG. 6 and FIGS. 7A and 7B, the dismantling device main body 24 that constitutes the refractory brick disassembling device 15 together with the connecting frame 23 is at least a pair in which the dismantling member 28 of the refractory brick 11 is attached to the tip. It consists of two pairs of telescopic rod-like members 29 in this embodiment. The expansion / contraction rod-shaped member 29 is driven and controlled, for example, via a hydraulic cylinder 40, and the expansion / contraction rod-shaped member 29 is formed at the tip of the joint 41 (of the refractory brick 11 as a dismantling member 28). A wedge-shaped member 28a for biting into FIG. 10) is provided. Furthermore, each pair of telescopic rod-shaped members 29 is connected and integrated through the first connecting band member 42a and the second connecting band member 42b in a state where the wedge-shaped members 28a are arranged in parallel while being arranged on the opposite side. As a result, when suspended in the chimney 10 together with the connecting frame 23, it extends and contracts in the substantially radial direction along the transverse direction of the chimney 10.

また、各一対の伸縮棒状部材２９は、互いに垂直に交差する十字形状に配置されると共に、２段に重ねて配置される。第１連結バンド部材４２ａにより連結一体化されて上段に配置される一方の一対の伸縮棒状部材２９は、第１連結バンド部材４２ａの中央に立設配置された第１連結リブ４３ａを、解体装置支持架台２６の中間支持プレート２６ｂから下方に突出する第１本体吊下げ金具３５ａ（図４参照）に連結することにより、解体装置支持架台２６から吊り下げるようにして取り付けられる。第２連結バンド部材４２ｂにより連結一体化されて下段に配置される他方の一対の伸縮棒状部材２９は、第２連結バンド部材４２ｂの中央に立設配置された第２連結リブ４３ｂを、解体装置支持架台２６の中間支持プレート２６ｂから下方に突出する第２本体吊下げ金具３５ｂ（図４参照）に連結することにより、解体装置支持架台２６から吊り下げるようにして取り付けられる。 Each pair of telescopic rod-shaped members 29 is arranged in a cross shape that intersects perpendicularly with each other, and is arranged in two stages. One pair of telescopic rod-like members 29 that are connected and integrated by the first connecting band member 42a and disposed in the upper stage are disassembled from the first connecting rib 43a that is erected and arranged at the center of the first connecting band member 42a. By attaching to the first main body suspension fitting 35a (see FIG. 4) protruding downward from the intermediate support plate 26b of the support base 26, the support base 26 is attached so as to be suspended from the dismantling apparatus support base 26. The other pair of telescopic rod-shaped members 29 that are connected and integrated by the second connection band member 42b and disposed at the lower stage are disassembled from the second connection rib 43b that is erected and arranged at the center of the second connection band member 42b. It is attached so as to be suspended from the dismantling device support frame 26 by being connected to a second main body suspension fitting 35b (see FIG. 4) protruding downward from the intermediate support plate 26b of the support frame 26.

さらに、本実施形態では、各伸縮棒状部材２９の楔状部材２８ａとは反対側の端部には、各伸縮棒状部材２９から下方に折れ曲がって、補助脚部４４ａ，４４ｂが設けられている。耐火レンガ解体装置１５を地上に設置した際に、これらの補助脚部４４ａ，４４ｂを脚柱フレーム２７の下端部と共に地表面に接地させることによって、より安定した状態で、耐火レンガ解体装置１５を地上に仮置き等しておくことが可能になる（図３参照）。また後述するように、解体部材２８として、楔状部材２８ａと鍬状部材２８ｂとを伸縮棒状部材２９の先端に選択的に配設して用いる際に（図１２参照）、これらの解体部材２８の交換作業をより安定した状態で行うことが可能になる。 Furthermore, in the present embodiment, auxiliary leg portions 44a and 44b are provided at the end of each telescopic rod-shaped member 29 opposite to the wedge-shaped member 28a and bent downward from each telescopic rod-shaped member 29. When the refractory brick dismantling device 15 is installed on the ground, the auxiliary leg portions 44a and 44b are grounded to the ground surface together with the lower ends of the pedestal frames 27, so that the refractory brick dismantling device 15 is more stable. It can be temporarily placed on the ground (see FIG. 3). As will be described later, as the dismantling member 28, when the wedge-shaped member 28a and the hook-shaped member 28b are selectively disposed at the tip of the telescopic rod-shaped member 29 (see FIG. 12), the dismantling member 28 The replacement work can be performed in a more stable state.

駆動本体部２２及び耐火レンガ解体装置１５と共に煙突解体装置５０を構成するコンクリート解体装置３２は、図８に示すように、例えば特開２００６−６８６０１号公報に開示される公知の解体装置であって、略Ｌ字形状の固定破砕腕５１と、この固定破砕腕５１に対して先端部分が接離作動する可動破砕腕５２とからなる。固定破砕腕５１は、リンク５３と軸体５４を介して、駆動本体部２２の回転接続台２０に、当該リンク５３及び軸体５４を回転接続台２０の接合プレート２０ｃから下方に突出する吊下金物３３にピン接合することにより、着脱可能に取り付けられる。可動破砕腕５２は、固定破砕腕５１の中間部内側部分に回転軸５５によって軸支されて、固定破砕腕５１に対して回動可能に取り付けられる。また固定破砕腕５１の上端部と可動破砕腕５２の中間部外側部分とが開閉油圧シリンダ５６によって連結されている。この開閉油圧シリンダ５６の伸縮によって、可動破砕腕５２を固定破砕腕５１に対して開閉作動させ、これらの破砕腕５１，５２の間に鉄筋コンクリート造の外筒１３の上端部を挟みこんで破砕すると共に、破砕後のコンクリート屑を可動破砕腕５２が配置される煙突１０の内側に誘導して、煙突１０内部の下方に落としこむことができるようになっている。 A concrete demolition apparatus 32 that constitutes the chimney demolition apparatus 50 together with the drive main body 22 and the refractory brick demolition apparatus 15 is a known demolition apparatus disclosed in, for example, JP-A-2006-68601, as shown in FIG. The fixed crushing arm 51 having a substantially L-shape and the movable crushing arm 52 whose tip portion contacts and separates from the fixed crushing arm 51. The fixed crushing arm 51 is suspended on the rotary connection base 20 of the drive main body 22 via the link 53 and the shaft body 54 so that the link 53 and the shaft body 54 protrude downward from the joining plate 20 c of the rotary connection base 20. By pin joining to the hardware 33, it can be detachably attached. The movable crushing arm 52 is pivotally supported by a rotation shaft 55 on an inner portion of the intermediate portion of the fixed crushing arm 51 and is rotatably attached to the fixed crushing arm 51. Further, the upper end portion of the fixed crushing arm 51 and the outer portion of the intermediate portion of the movable crushing arm 52 are connected by an open / close hydraulic cylinder 56. The movable crushing arm 52 is opened and closed with respect to the fixed crushing arm 51 by the expansion and contraction of the opening / closing hydraulic cylinder 56, and the upper end portion of the outer cylinder 13 made of reinforced concrete is sandwiched between the crushing arms 51 and 52 for crushing. At the same time, the crushed concrete debris can be guided to the inside of the chimney 10 where the movable crushing arm 52 is disposed, and dropped into the lower part of the chimney 10.

なお、固定破砕腕５１や可動破砕腕５２には、これらの内側に配置されて、鉄筋切断用の固定刃５６や可動刃５７が設けられており、これらの固定刃５７や可動刃５８によって鉄筋を切断しつつ、鉄筋コンクリート造の外筒１３をコンクリート解体装置３２によってスムーズに解体して行くことができるようになっている。また、固定破砕腕５１の中間部外側部分から支持させて、コンクリート解体装置３２による破砕物の捕集バケット６２が吊り下げられている。さらに、コンクリート解体装置３２を用いて外筒１３を解体する際には、例えば回転接続台２０のリブ付き環状補強部材２０ｂに一端部を固定して、棒状の支持ブラケット（図示せず）を、可動破砕腕５２の開閉作動方向に対して直交する方向、即ち可動破砕腕５２の回転軸５５と平行な方向に延設させると共に、この支持ブラケットの他端部には、コンクリート解体装置３２による外筒１３の解体作業の状況を撮影して監視するためのテレビカメラが取り付けられる。 The fixed crushing arm 51 and the movable crushing arm 52 are provided with a fixed blade 56 and a movable blade 57 for cutting a reinforcing bar, which are arranged on the inside thereof. The outer cylinder 13 made of reinforced concrete can be smoothly dismantled by the concrete dismantling device 32. Further, a crushed material collection bucket 62 by the concrete demolition device 32 is suspended from an intermediate portion outside the fixed crushing arm 51. Furthermore, when the outer cylinder 13 is disassembled using the concrete dismantling device 32, for example, one end portion is fixed to the ribbed annular reinforcing member 20b of the rotary connection base 20, and a rod-shaped support bracket (not shown) is attached. The movable crushing arm 52 is extended in a direction orthogonal to the opening / closing operation direction of the movable crushing arm 52, that is, in a direction parallel to the rotation shaft 55 of the movable crushing arm 52. A television camera for photographing and monitoring the state of dismantling work of the tube 13 is attached.

また、本実施形態では、コンクリート解体装置３２は、例えば耐火レンガ解体装置１５によって内筒１２が解体されている間、図９に示すように、煙突１０に隣接して地上に配置された仮置架台５９に収容されることにより、固定破砕腕５１の下端を下方に配設すると共に、固定破砕腕５１の上端に取り付けたリンク５３及び軸体５４を上方に配設した、揚重機２１から吊り下げられた際の立設状態を保持したまま仮置される。すなわち、本実施形態では、仮置架台５９は、例えばＨ形鋼、山形鋼、溝形鋼等の鋼材を骨組部材として立体形状に組み付けることによって形成され、揚重機２１から吊り下げた駆動本体部２２に取り付けたコンクリート解体装置３２を、上部の導入開口部を介して上方から内部に導入すると共に、導入されたままの立設状態で、周囲の鋼材等による支持架台に支持させて、リンク５３及び軸体５４を上方に配設した安定した状態でコンクリート解体装置３２を収容する。また仮置架台５９には、作業員が駆動本体部２２へのコンクリート解体装置３２の着脱作業を容易に行えるようにするための、昇降階段６０や作業足場６１等が適宜設けられている。 Further, in the present embodiment, the concrete demolition device 32 is temporarily placed on the ground adjacent to the chimney 10 as shown in FIG. 9 while the inner cylinder 12 is being demolished by the firebrick demolition device 15, for example. By being accommodated in the gantry 59, the lower end of the fixed crushing arm 51 is disposed downward, and the link 53 and the shaft body 54 attached to the upper end of the fixed crushing arm 51 are suspended from the lifting machine 21. It is temporarily placed while maintaining the standing state when lowered. That is, in the present embodiment, the temporary mounting base 59 is formed by assembling a steel material such as an H-shaped steel, an angle steel, and a grooved steel into a three-dimensional shape as a frame member, and is suspended from the lifting machine 21. The concrete demolition device 32 attached to the machine 22 is introduced into the interior from above through the upper introduction opening, and in a standing state as introduced, it is supported by a support base made of surrounding steel or the like, and the link 53 And the concrete dismantling apparatus 32 is accommodated in the stable state which has arrange | positioned the shaft body 54 upwards. Further, the temporary mount 59 is appropriately provided with an elevating staircase 60, a work scaffold 61, and the like so that an operator can easily attach and detach the concrete demolition device 32 to and from the drive main body 22.

そして、本実施形態の煙突の解体方法は、上述のような構成の、駆動本体部２２と耐火レンガ解体装置１５とコンクリート解体装置３２とからなる煙突解体装置５０を使用して、駆動本体部２２の回転接続台２０に耐火レンガ解体装置１５を取り付け、揚重機２１により吊り上げて、煙突１０の内部に挿入しつつ耐火レンガ解体装置１５により内筒１２を解体する内筒解体工程と、駆動本体部２２の回転接続台２０にコンクリート解体装置３２を耐火レンガ解体装置１５と交換して取り付け、揚重機２１により吊り上げて、内筒１２が先行して解体された部分の外筒１３をコンクリート解体装置３２により解体する外筒解体工程とによって、煙突１０を解体する。 And the chimney disassembly method of this embodiment uses the chimney disassembly apparatus 50 which consists of the drive main body part 22, the refractory brick demolition apparatus 15, and the concrete demolition apparatus 32 of the above structures, and the drive main body part 22 An inner cylinder disassembling step of disassembling the inner cylinder 12 by the refractory brick disassembling device 15 while being attached to the chimney 10 while being attached to the chimney 10 by attaching the refractory brick disassembling device 15 to the rotary connection base 20 The concrete dismantling device 32 is attached to the rotary connecting base 20 by exchanging it with the refractory brick dismantling device 15 and is lifted by the lifting machine 21, and the concrete dismantling device 32 disassembles the portion of the outer cylinder 13 where the inner cylinder 12 was disassembled in advance. The chimney 10 is disassembled by the outer cylinder disassembly step of dismantling.

すなわち、内筒解体工程では、コンクリート解体装置３２を地上に配置された仮置架台５９に仮置したまま、連結架台２３の４本の脚柱フレーム２７により自立した状態で煙突１０に隣接する地上に仮置された耐火レンガ解体装置１５を、揚重機２１から吊り下げられた駆動本体部２２に、接続架台２５を回転接続台２０に接続連結することによって取り付ける。しかる後に、図２（ａ）に示すように、耐火レンガ解体装置１５を、駆動本体部２２と共に揚重機２１から吊り下げた状態で、煙突１０の上端開口の上方に搬送し、上端開口からこれの内部に逐次挿入して、以下のようにして、例えばテレビカメラによって撮影した映像をモニターに写しながら、地上からの遠隔操作によって耐火レンガ１１の解体作業を行う。 That is, in the inner cylinder dismantling process, the concrete dismantling device 32 is temporarily placed on the temporary stand 59 placed on the ground, and the ground adjacent to the chimney 10 in a state where it is self-supported by the four pedestal frames 27 of the connecting stand 23. The refractory brick dismantling device 15 temporarily placed on the vehicle is attached to the drive main body 22 suspended from the lifting machine 21 by connecting and connecting the connection stand 25 to the rotary connection stand 20. Thereafter, as shown in FIG. 2 (a), the firebrick dismantling device 15 is transported above the upper end opening of the chimney 10 in a state of being suspended from the lifting machine 21 together with the drive main body 22, and from this upper end opening. The firebrick 11 is dismantled by remote control from the ground while sequentially inserting the video into the PC and capturing the video taken by, for example, a television camera on the monitor as follows.

耐火レンガ１１は、図１０（ａ），（ｂ）に示すように、上下に隣接する層４５間において各レンガ１１の端面を周方向に半個分づつずらした状態で積み上げられており、先端に目地挿入用の楔状部材２８ａを備える伸縮可能な伸縮棒状部材２９を、内筒１２の上端１２ａから複数層挟んだ下方に配置すると共に、煙突１０の横断方向に沿って略径方向に延設させる。しかる後に、この伸縮棒状部材２９を伸張して、楔状部材２８ａを耐火レンガ１１の目地部４１に食い込ませることにより、楔状部材２８ａが食い込んだ目地部４１ａ（以下、「食込み目地部」とする。）よりも上層の耐火レンガ１１を、当該食込み目地部４１ａの両側部分の目地部４１を介して階段状に分離させつつレンガ塊４６として持ち上げながら、耐火レンガ１１を解体する。 As shown in FIGS. 10 (a) and 10 (b), the refractory bricks 11 are stacked in a state where the end surfaces of the bricks 11 are shifted by half each in the circumferential direction between the layers 45 adjacent to each other in the vertical direction. A telescopic rod-like member 29 having a wedge-like member 28a for joint insertion is disposed below the upper end 12a of the inner cylinder 12 with a plurality of layers interposed therebetween, and is extended in a substantially radial direction along the transverse direction of the chimney 10. Let Thereafter, the telescopic rod-shaped member 29 is extended to cause the wedge-shaped member 28a to bite into the joint portion 41 of the refractory brick 11, thereby forming the joint portion 41a (hereinafter referred to as "biting joint portion") into which the wedge-shaped member 28a has bitten. The refractory bricks 11 are disassembled while lifting the refractory bricks 11 in the upper layer from the above-mentioned bite joints 41a in a stepped manner through the joints 41 on both sides of the biting joints 41a.

より具体的には、図１１（ａ）〜（ｅ）に示すように、各伸縮棒状部材２９が収縮している状態から（図１１（ａ）参照）、各伸縮棒状部材２９を伸張して、楔状部材２８ａを耐火レンガ１１の内面に当接させる（図１１（ｂ）参照）。楔状部材２８ａの先端が耐火レンガ１１の内面に当接している状態から、伸縮棒状部材２９を、これらの伸び量が好ましくは耐火レンガ１１の厚さに相当する長さとなるように、食込み目地部４１ａに向けて伸張させことにより、楔状部材２８ａを食込み目地部４１ａに貫入させるように食い込ませる（図１１（ｃ）参照）。これによって、食込み目地部４１ａよりも上層の耐火レンガ１１を、図１０（ｂ）に示すように、食込み目地部４１ａの両側部分の目地部４１を介して階段状に分離させつつレンガ塊４６として持ち上げる。なお、楔状部材２８ａは、食込み目地部４１ａの位置から上下にずれて、先端が耐火レンガ１１自体に当接している状態となっている場合があるが、楔状部材２８ａの先端が耐火レンガ１１に貫入されるのに従って、楔状部材２８ａは上方或いは下方に位置する食込み目地部４１ａに食い込むように誘導されてゆくことになる。 More specifically, as shown in FIGS. 11A to 11E, from the state in which each telescopic bar member 29 is contracted (see FIG. 11A), each telescopic bar member 29 is extended. The wedge-shaped member 28a is brought into contact with the inner surface of the refractory brick 11 (see FIG. 11B). From the state in which the tip of the wedge-shaped member 28 a is in contact with the inner surface of the refractory brick 11, the stretchable rod-shaped member 29 is cut into a bite joint so that the extension amount thereof is preferably a length corresponding to the thickness of the refractory brick 11. By extending toward 41a, the wedge-shaped member 28a is bitten so as to penetrate into the biting joint 41a (see FIG. 11C). As a result, as shown in FIG. 10 (b), the refractory bricks 11 above the biting joint 41a are separated into a stepped shape via the joints 41 on both sides of the biting joint 41a as a brick block 46. lift. The wedge-shaped member 28a may be shifted up and down from the position of the biting joint 41a and the tip may be in contact with the refractory brick 11 itself, but the tip of the wedge-shaped member 28a may be in contact with the refractory brick 11. As it penetrates, the wedge-shaped member 28a is guided to bite into the biting joint 41a located above or below.

このようにして、階段状に分離されたレンガ塊４６は、押し上げられるように持ち上げられて多少上部に動いた状態となり、レンガ塊４６の全体のバランスが崩れ、煙突１０の内側へと転倒した場合には、レンガ塊４６は個々の耐火レンガ１１に分離されながら下方へ落下する。このように耐火レンガ１１が下方に落下したときは、各一対の伸縮棒状部材２９の楔状部材２８ａの先端間の距離がその位置での内筒１２の内径よりも小さくなるまで油圧シリンダ４０を縮ませた後に、食込み目地部４１ａに楔状部材２８ａを食い込ませる複数層挟んだ次ぎの位置まで、耐火レンガ解体装置１５を駆動本体部２２と共に下方に移動させる。 In this way, when the brick block 46 separated in a staircase shape is lifted so as to be pushed up and moved slightly upward, the entire balance of the brick block 46 is lost and falls down into the chimney 10 inside. The brick block 46 falls downward while being separated into the individual refractory bricks 11. Thus, when the firebrick 11 falls downward, the hydraulic cylinder 40 is contracted until the distance between the tips of the wedge-shaped members 28a of each pair of telescopic rod-shaped members 29 becomes smaller than the inner diameter of the inner cylinder 12 at that position. After that, the refractory brick dismantling device 15 is moved downward together with the drive main body portion 22 to the next position sandwiching a plurality of layers in which the wedge-shaped member 28a is bitten into the biting joint portion 41a.

また、レンガ塊４６が多少上部に動いた状態でも全体のバランスがくずれない場合がある。レンガ塊４６の全体のバランスがくずれても、レンガ塊４６が外側に傾く場合には、外筒１３にもたれかかってレンガ塊４６は転倒しないことがある。このような場合には、レンガ塊４６と共に耐火レンガ解体装置１５とを上方に引き上げることで（図１１（ｄ）参照）、レンガ塊４６のバランスがくずれて下方へ落下したら、各一対の伸縮棒状部材２９の楔状部材２８ａの先端間の距離が内筒１２の内径よりも小さくなるまで油圧シリンダ４０を縮ませた後に、複数層挟んだ次ぎの食込み目地部４１ａの位置まで、耐火レンガ解体装置１５を駆動本体部２２と共に下方に移動させる。 Even if the brick block 46 moves slightly upward, the overall balance may not be lost. Even if the overall balance of the brick block 46 is lost, if the brick block 46 is inclined outward, the brick block 46 may not fall down due to leaning against the outer cylinder 13. In such a case, when the brick block 46 is pulled up together with the brick block 46 (see FIG. 11 (d)) and the brick block 46 is out of balance and falls downward, each pair of telescopic bar shapes After the hydraulic cylinder 40 is contracted until the distance between the tips of the wedge-shaped members 28a of the member 29 becomes smaller than the inner diameter of the inner cylinder 12, the fire brick demolition device 15 is moved to the position of the next biting joint 41a sandwiched between a plurality of layers. Is moved downward together with the drive main body 22.

さらに、耐火レンガ１１のレンガ塊４６を引き上げてもレンガ塊４６が下方へ落下しないときは、引き上げたままの状態で、各一対の伸縮棒状部材２９の楔状部材２８ａの先端間の距離が内筒１２の内径よりも小さくなるまで油圧シリンダ４０を縮ませる（図１１（ｅ）参照）。これによって、レンガ塊４６は、下方に残置された内筒１２の上端１２ａに衝突した後、個々の耐火レンガ１１に分離されながら下方へ落下する。 Further, if the brick block 46 does not fall down even when the brick block 46 of the refractory brick 11 is pulled up, the distance between the tips of the wedge-shaped members 28a of each pair of telescopic rod-shaped members 29 is the inner cylinder. The hydraulic cylinder 40 is contracted until it becomes smaller than the inner diameter of 12 (see FIG. 11E). Thereby, the brick block 46 collides with the upper end 12a of the inner cylinder 12 left below, and then falls downward while being separated into the individual refractory bricks 11.

そして、本実施形態によれば、これらによって、耐火レンガ１１を積み上げて構成される内筒１２の構造上弱い部分である目地部４１を利用すると共に、目地部４１が階段状に分離してゆく構造上の特性を利用して、耐火レンガ１１をブロック状のレンガ塊４６として効率良くスムーズに解体してゆことができると共に、楔状部材２８ａによって耐火レンガ１１を押し上げて目地部４１を確実に切ることができるので、内筒１２の厚さが厚い煙突１０の下部においても、耐火レンガ１１を効率良く解体してゆくことが可能になる。 And according to this embodiment, while using the joint part 41 which is a weak part on the structure of the inner cylinder 12 comprised by stacking the firebrick 11 by these, the joint part 41 isolate | separates in step shape. Utilizing the structural characteristics, the fire brick 11 can be efficiently and smoothly disassembled as a block-like brick block 46, and the fire brick 11 is pushed up by the wedge-shaped member 28a to reliably cut the joint portion 41. Therefore, the refractory bricks 11 can be efficiently disassembled even in the lower part of the chimney 10 where the inner cylinder 12 is thick.

また、本実施形態では、図１２に示すように、解体部材２８として、楔状部材２８ａに替えて、先端部分に下方に折れ曲がったフック部分４５を備える鍬状部材２８ｂを伸縮棒状部材２９に取り付けて、解体装置本体２４とすることもできる。このような解体装置本体２４では、図１３に示すように、コンクリート造の外筒１３と耐火レンガ造の内筒１２との間の隙間１４にフック部分４５を上方から挿入係止して、耐火レンガ１１を内側に引き倒すことにより、内筒１２を上部から下部に向けて順次解体してゆくことが可能になる。 Further, in this embodiment, as shown in FIG. 12, as the dismantling member 28, a hook-like member 28 b having a hook portion 45 bent downward at the tip portion is attached to the telescopic rod-like member 29 instead of the wedge-like member 28 a. The dismantling device main body 24 can also be used. In such a dismantling device main body 24, as shown in FIG. 13, a hook portion 45 is inserted and locked into the gap 14 between the concrete outer cylinder 13 and the refractory brick inner cylinder 12 from above, and the fire resistance By pulling the brick 11 inward, the inner cylinder 12 can be disassembled sequentially from the top to the bottom.

さらに、本実施形態では、楔状部材２８ａと鍬状部材２８ｂとを、一対の伸縮棒状部材２９の先端に選択的に配設して用いることもできる。楔状部材２８ａと鍬状部材２８ｂとを選択的に配設する方法としては、例えば図１４（ａ），（ｂ）に示すように、楔状部材２８ａを覆うカバー体として、鍬状部材２８ｂを伸縮棒状部材２９の先端の接合フランジ部２９ａに接合する方法（図１４（ａ）参照）や、伸縮棒状部材２９の先端の接合フランジ部２９ａに、楔状部材２８ａ及び鍬状部材２８ｂの一方を取リ外して他方を接合する方法（図１４（ｂ）参照）等を採用することができる。 Furthermore, in this embodiment, the wedge-shaped member 28a and the hook-shaped member 28b can be selectively disposed at the distal ends of the pair of telescopic rod-shaped members 29. As a method of selectively disposing the wedge-shaped member 28a and the hook-shaped member 28b, for example, as shown in FIGS. 14 (a) and 14 (b), the hook-shaped member 28b is expanded and contracted as a cover body covering the wedge-shaped member 28a. One of the wedge-shaped member 28a and the flange-shaped member 28b is attached to the joining flange 29a at the tip of the rod-shaped member 29 (see FIG. 14A) or the joint flange 29a at the tip of the telescopic rod-shaped member 29. A method of removing and joining the other (see FIG. 14B) or the like can be employed.

楔状部材２８ａと鍬状部材２８ｂとを、伸縮棒状部材２９の先端に選択的に配設可能とすることにより、例えば図１５（ａ），（ｂ）に示すように、外筒１３の上端に近接する、例えば楔状部材２８ａによって解体されたレンガ１１が外筒１３の外側にこぼれ落ち易い内筒１２の上端部分（図１５（ａ）参照）や、外筒１３の老朽化が激しく、楔状部材２８ａによってレンガ１１を解体する勢いで、外筒１３をも壊して外側に落下させ易い内筒１２の上端部分（図１５（ｂ）参照）の外筒天端部から例えば1ｍ程度までに対しては、解体部材２８として鍬状部材２８ｂを用い、外筒１３と内筒１２との間の隙間１４にフック部分４５を上方から挿入係止して、伸縮棒状部材２９を収縮しつつ内側に引き倒すことにより耐火レンガ１１を解体することができる。また外筒１３の上端と離れた内筒１２の上端部分より下方の部分に対しては、解体部材２８として楔状部材２８ａを用い、伸縮棒状部材２９を伸張しつつ楔状部材２８ａの先端を耐火レンガ１１の目地部４１ａに食い込ませて、上下の耐火レンガ１１を分離させることにより耐火レンガ１１を解体することができる。これらによって、より安全で且つ効率の良い内筒１２の解体作業を行うことが可能になる。なお、解体部材２８を鍬状部材２８ｂから楔状部材２８ａに替える高さは、外筒１３の厚さや老朽化の度合い等を勘案して適宜決めることができる。 By allowing the wedge-shaped member 28a and the flange-shaped member 28b to be selectively disposed at the tip of the telescopic rod-shaped member 29, for example, as shown in FIGS. The adjacent upper end portion of the inner cylinder 12 (see FIG. 15A), for example, where the brick 11 disassembled by the wedge-shaped member 28a is easily spilled to the outside of the outer cylinder 13 or the outer cylinder 13 is severely deteriorated, and the wedge-shaped member 28a. From the top end of the outer cylinder 12 (see FIG. 15 (b)), for example, to about 1 m from the upper end portion of the inner cylinder 12 that easily breaks the outer cylinder 13 and easily drops it outside. The hook-like member 28b is used as the dismantling member 28, the hook portion 45 is inserted and locked into the gap 14 between the outer cylinder 13 and the inner cylinder 12 from above, and the telescopic rod-like member 29 is contracted and pulled inward. Dismantle the refractory brick 11 be able to. In addition, a wedge-shaped member 28a is used as a dismantling member 28 for a portion below the upper end portion of the inner cylinder 12 that is separated from the upper end of the outer cylinder 13, and the distal end of the wedge-shaped member 28a is connected to the refractory brick while the telescopic rod-shaped member 29 is extended. The refractory bricks 11 can be dismantled by biting into the joint portions 41 a of the eleven and separating the upper and lower refractory bricks 11. By these, it becomes possible to perform the disassembly work of the inner cylinder 12 that is safer and more efficient. The height at which the dismantling member 28 is changed from the bowl-shaped member 28b to the wedge-shaped member 28a can be determined as appropriate in consideration of the thickness of the outer cylinder 13 and the degree of aging.

このような内筒解体工程によって、外筒１３の上端から所定の高さ、好ましくは煙突１０の全長に亘って、内筒１２を先行して解体したら、駆動本体部２２と共に耐火レンガ解体装置１５を揚重機２１によって吊り降ろし、耐火レンガ解体装置１５を駆動本体部２２から取り外すと共に、連結架台２３の４本の脚柱フレーム２７によって自立させた状態で仮置きする。しかる後に、駆動本体部２２にコンクリート解体装置３２を取り付け、外筒解体工程によって、内筒１２を先行して解体した部分の外筒１３を、例えばテレビカメラによって撮影した映像をモニターに写しながら、地上からの遠隔操作によって上部から下方に向けて順次解体する。 If the inner cylinder 12 is disassembled in advance by a predetermined height from the upper end of the outer cylinder 13, preferably the entire length of the chimney 10, through the inner cylinder disassembling step, the firebrick demolition device 15 together with the drive main body 22 is disposed. The firebrick dismantling device 15 is removed from the drive main body 22 and temporarily placed in a state where it is self-supported by the four pedestal frames 27 of the connecting frame 23. After that, the concrete dismantling device 32 is attached to the drive main body 22, and the outer cylinder 13 of the part dismantled in advance by the outer cylinder disassembling process is recorded on a monitor, for example, on the monitor. Dismantling from top to bottom by remote control from the ground.

すなわち、外筒解体工程では、仮置架台５９にリンク５３及び軸体５４を上方に配設した立設状態で仮置されたコンクリート解体装置３２を、揚重機２１から吊り下げられた駆動本体部２２に、回転接続台２０の吊下金物３３にリンク５３及び軸体５４を接続連結することによって取り付ける。しかる後に、図２（ｂ）に示すように、コンクリート解体装置３２を、駆動本体部２２と共に揚重機２１から吊り下げた状態で、煙突１０の上方に搬送する。さらに、鉄筋コンクリート造の外筒１３の上端から、固定破砕腕５１と可動破砕腕５２との間に外筒１３を挟み込んでコンクリートを破砕すると共に、鉄筋を切断しながら下方に向けて順次外筒１３を解体する。またコンクリートの破砕時に発生する粉塵の飛散防止のため、駆動本体部２２の駆動用架台１６に設けた散水設備３０から送られる散水用の水を、噴射ノズル（図示せず）を介して適宜散水する。 That is, in the outer cylinder disassembling step, the drive main body portion in which the concrete dismantling apparatus 32 temporarily placed in a standing state in which the link 53 and the shaft body 54 are disposed on the temporary mounting base 59 is suspended from the lifting machine 21. 22 is attached by connecting and linking the link 53 and the shaft body 54 to the hanging hardware 33 of the rotary connection base 20. Thereafter, as shown in FIG. 2 (b), the concrete demolition apparatus 32 is conveyed above the chimney 10 in a state of being hung from the lifting machine 21 together with the drive main body 22. Further, the outer cylinder 13 is sandwiched between the fixed crushing arm 51 and the movable crushing arm 52 from the upper end of the reinforced concrete outer cylinder 13 to crush the concrete, and the outer cylinder 13 is sequentially turned downward while cutting the reinforcing bar. Dismantle. Further, in order to prevent scattering of dust generated when concrete is crushed, water for watering sent from the watering equipment 30 provided on the driving base 16 of the driving main body portion 22 is appropriately sprinkled through a spray nozzle (not shown). To do.

外筒１３を所定の高さ解体したら、駆動本体部２２と共にコンクリート解体装置３２を揚重機２１によって吊り降ろし、仮置架台５９に収容して駆動本体部２２から取り外すことにより、コンクリート解体装置３２を仮置した状態に復帰させる。そして、このような内筒解体工程と外筒解体工程とを必要に応じて所定の高さ毎に繰り返すことにより、耐火レンガ造の内筒１２と鉄筋コンクリート造の外筒１３からなる老朽化した煙突１０を、駆動本体部２２を共用しつつ、一連の作業工程に従って一台の揚重機２１を用いて効率良く分別解体してゆくことが可能になる。 When the outer cylinder 13 is dismantled to a predetermined height, the concrete dismantling device 32 together with the drive main body portion 22 is suspended by the lifting machine 21, accommodated in the temporary mounting base 59 and removed from the driving main body portion 22, thereby removing the concrete dismantling device 32. Return to the temporarily placed state. And an old chimney comprising an inner cylinder 12 made of refractory bricks and an outer cylinder 13 made of reinforced concrete is made by repeating such an inner cylinder disassembling process and an outer cylinder disassembling process at a predetermined height as necessary. 10 can be separated and disassembled efficiently using a single lifting machine 21 according to a series of work steps while sharing the drive main body 22.

したがって、本実施形態の煙突の解体方法によれば、耐火レンガ造の内筒１２の解体作業と鉄筋コンクリート造の外筒１３の解体作業を、煙突解体装置５０の駆動本体部２２を共用しつつ、一連の作業工程に従って一台の揚重機２１を用いて効率良く行ってゆくことができる。 Therefore, according to the chimney dismantling method of the present embodiment, the dismantling work of the refractory brick inner cylinder 12 and the dismantling work of the reinforced concrete outer cylinder 13 are performed while sharing the drive main body 22 of the chimney dismantling apparatus 50. According to a series of work steps, it can be efficiently performed using one lifting machine 21.

なお、本発明は上記実施形態に限定されることなく種々の変更が可能である。例えば、駆動本体部は、バックフォーを改造して形成したものである必要は必ずしもなく、その他の種々の構造の駆動本体部を用いることができる。また、レンガ解体装置は、先端に耐火レンガの解体部材が取り付けられた少なくとも一対の伸縮棒状部材からなるものである必要は必ずしもなく、その他の種々の構造のレンガ解体装置であっても良い。さらに、コンクリート解体装置は、固定破砕腕と可動破砕腕との間に外筒を挟み込んで解体するものである必要は必ずしも無く、煙突の内側に破砕片等を落とし込むことができるものであれば、ブレーカー等のその他の解体機器によるものであっても良い。さらにまた、下部に行くに従って煙突の壁厚が大きくなることにより、駆動本体部の出力が足りなくなった場合には、より出力の大きな駆動本体部と交換して解体作業を行うこともできる。 The present invention is not limited to the above-described embodiment, and various modifications can be made. For example, the drive main body portion does not necessarily have to be formed by modifying the back fore, and drive main body portions having various other structures can be used. Further, the brick dismantling device does not necessarily need to be composed of at least a pair of telescopic rod-like members having fireproof brick dismantling members attached to the ends, and may be brick dismantling devices having other various structures. Furthermore, the concrete demolition device does not necessarily have to be disassembled by sandwiching the outer cylinder between the fixed crushing arm and the movable crushing arm, as long as it can drop crushing pieces etc. inside the chimney, Another dismantling device such as a breaker may be used. Furthermore, the wall thickness of the chimney increases toward the lower part, so that when the output of the drive main body is insufficient, the disassembly work can be performed by replacing the drive main body with a higher output.

（ａ）は、本発明の好ましい一実施形態に係る煙突の解体方法によって解体される煙突を例示する斜視図、（ｂ）は（ａ）のＡ−Ａに沿った上部断面図、（ｃ）は（ａ）のＢ−Ｂに沿った下部断面図である。(A) is a perspective view illustrating a chimney disassembled by a chimney disassembly method according to a preferred embodiment of the present invention, (b) is an upper cross-sectional view along A-A in (a), (c). [FIG. 6] is a lower cross-sectional view taken along line BB in FIG. （ａ）は耐火レンガ解体装置を用いて内筒を解体してゆく状況を説明する略示断面図、（ｂ）はコンクリート解体装置を用いて外筒を解体してゆく状況を説明する略示断面図である。(A) is a schematic cross-sectional view illustrating a situation in which an inner cylinder is dismantled using a refractory brick dismantling device, and (b) is an abbreviation describing a situation in which an outer cylinder is dismantled using a concrete dismantling device. It is sectional drawing. （ａ）は耐火レンガ解体装置を駆動本体部に連結した状態を示す側面図、（ｂ）は（ａ）の状態から９０°ずれた方向から見た側面図である。(A) is a side view which shows the state which connected the firebrick demolition apparatus to the drive main-body part, (b) is the side view seen from the direction which shifted | deviated 90 degrees from the state of (a). （ａ）は耐火レンガ解体装置の連結架台の構成を説明する側面図及び上面図、（ｂ）は（ａ）の状態から９０°ずれた方向から見た側面図及び上面図である。(A) is the side view and top view explaining the structure of the connection stand of a refractory brick dismantling apparatus, (b) is the side view and top view seen from the direction which shifted | deviated 90 degrees from the state of (a). 図４（ｂ）のＣ−Ｃに沿った上面図である。It is a top view along CC of FIG.4 (b). 耐火レンガ解体装置の解体装置本体の上面図である。It is a top view of the demolition apparatus main body of a refractory brick demolition apparatus. 耐火レンガ解体装置の解体装置本体の構成を説明する側面図、（ｂ）は（ａ）の状態から９０°ずれた方向から見た側面図及び上面図である。The side view explaining the structure of the demolition apparatus main body of a refractory brick demolition apparatus, (b) is the side view and top view seen from the direction which shifted | deviated 90 degrees from the state of (a). コンクリート解体装置を駆動本体部に連結した状態を示す側面図である。It is a side view which shows the state which connected the concrete demolition apparatus to the drive main-body part. コンクリート解体装置を仮置架台に仮置した状態を説明する側面図である。It is a side view explaining the state which put the concrete demolition apparatus temporarily on the temporary mounting stand. （ａ）は耐火レンガ解体装置の解体装置本体を用いて耐火レンガを解体してゆく状況を説明する要部断面図、（ｂ）は耐火レンガを解体してゆく状況を説明する内筒を内側から見た正面図である。(A) is principal part sectional drawing explaining the condition which dismantles a refractory brick using the dismantling apparatus main body of a refractory brick dismantling apparatus, (b) inside the inner cylinder explaining the condition which dismantles a refractory brick It is the front view seen from. （ａ）〜（ｅ）は、耐火レンガ解体装置の解体装置本体を用いて耐火レンガを解体してゆく作業手順を説明する要部断面図である。(A)-(e) is principal part sectional drawing explaining the operation | work procedure which dismantles a refractory brick using the dismantling apparatus main body of a refractory brick dismantling apparatus. 耐火レンガ解体装置の解体装置本体の解体部材として鍬状部材を取付けた解体装置本体の要部側面図である。It is a principal part side view of the dismantling apparatus main body which attached the bowl-shaped member as a dismantling member of the dismantling apparatus main body of a refractory brick dismantling apparatus. 耐火レンガ解体装置の解体装置本体の解体部材として鍬状部材を取付けた解体装置本体によって耐火レンガを解体してゆく作業手順を説明する要部断面図である。It is principal part sectional drawing explaining the operation | work procedure which dismantles a firebrick by the dismantling apparatus main body which attached the bowl-shaped member as a dismantling member of the dismantling apparatus main body of a firebrick demolition apparatus. （ａ）、（ｂ）は、耐火レンガ解体装置の解体装置本体の解体部材として楔状部材と鍬状部材を選択的に配設する方法を説明する要部側面図である。(A), (b) is a principal part side view explaining the method of arrange | positioning a wedge-shaped member and a bowl-shaped member selectively as a demolition member of the demolition apparatus main body of a firebrick demolition apparatus. （ａ）、（ｂ）は、耐火レンガ解体装置の解体装置本体の解体部材として楔状部材を用いた際の課題を説明する要部断面図である。(A), (b) is principal part sectional drawing explaining the subject at the time of using a wedge-shaped member as a dismantling member of the dismantling apparatus main body of a refractory brick dismantling apparatus.

Explanation of symbols

１０煙突
１１耐火レンガ
１２内筒
１３外筒
１４隙間（空気層）
１５耐火レンガ解体装置
１６駆動用架台
２０回転接続台
２１揚重機
２２駆動本体部
２３連結架台
２４解体装置本体
２５接続架台
２６解体装置支持架台
２７脚柱フレーム
２８解体部材
２８ａ楔状部材
２８ｂ鍬状部材
２９伸縮棒状部材
３２コンクリート解体装置
４１目地部
４１ａ食込み目地部
４６レンガ塊
５０煙突解体装置
５１固定破砕腕
５２可動破砕腕
５５回転軸
５６開閉油圧シリンダ
５９仮置架台 10 Chimney 11 Refractory brick 12 Inner cylinder 13 Outer cylinder 14 Crevice (air layer)
DESCRIPTION OF SYMBOLS 15 Refractory brick dismantling apparatus 16 Drive stand 20 Rotation connection stand 21 Lifting machine 22 Drive main body 23 Drive stand 23 Linking stand 24 Dismantling device main body 25 Connection stand 26 Dismantling device support stand 27 Leg column frame 28 Disassembly member 28a Wedge-like member 28b Wedge-like member 29 Telescopic bar-like member 32 Concrete demolition device 41 Joint portion 41a Biting joint portion 46 Brick block 50 Chimney demolition device 51 Fixed crushing arm 52 Movable crushing arm 55 Rotating shaft 56 Opening and closing hydraulic cylinder 59 Temporary stand

Claims

A chimney composed of a concrete outer cylinder and a refractory brick inner cylinder is mounted with at least a driving power unit, a hydraulic pump, and a remote control unit above the driving base, and below the driving base. The refractory brick dismantling device is attached to the driving main body by a chimney dismantling device having a driving main body portion that is used so as to be able to be lifted and lowered from a lifting machine. A chimney dismantling method for disassembling a chimney by detachably attaching a concrete demolition device and
The fireproof brick dismantling device is mounted on the rotary connection base of the drive main body on the ground, lifted by the lifting machine, disassembled with the fireproof brick dismantling device while being inserted into the chimney, and disassembled the fireproof An inner cylinder disassembling step of sequentially dismantling the inner cylinder from above while dropping bricks into the chimney;
On the ground, the concrete demolition device is attached to the rotary connection base of the drive main body portion by replacing the fire brick demolition device, and is lifted by the lifting machine, and the outer cylinder of the portion where the inner cylinder has been disassembled in advance is A chimney dismantling method comprising: an outer cylinder disassembling step in which the outer cylinder is disassembled sequentially from above while being demolished by a concrete dismantling apparatus and dropping the demolished concrete into the chimney.

The refractory brick demolition apparatus includes a demolition apparatus main body including at least a pair of telescopic rod-like members attached to the tip of the demolition member of the refractory brick and extending and retracting along the transverse direction of the chimney
In the inner cylinder disassembling step, a hook-shaped member is used as the dismantling member for the upper end portion of the inner cylinder close to the upper end of the outer cylinder, and a hook is provided in the gap between the outer cylinder and the inner cylinder. The part is inserted and locked from above, and the fire-resistant brick is disassembled by retracting the telescopic bar-like member while contracting, and the upper part of the inner cylinder away from the upper end of the outer cylinder On the other hand, a wedge-shaped member is used as the dismantling member, the distal end of the wedge-shaped member is bitten into the joint portion of the refractory brick while the expandable rod-shaped member is extended, and the upper and lower refractory bricks are separated. The method for disassembling a chimney according to claim 1.

The firebrick demolition device includes a demolition device main body including at least a pair of telescopic rod-like members attached to a front end as a firebrick demolition member and extending and retracting along the transverse direction of the chimney. And
In the inner cylinder disassembling step, by extending the extensible rod-like member and causing the tip of the wedge-shaped member to bite into the joint portion of the refractory brick, the refractory brick above the joint portion into which the wedge-shaped member bites, The method for disassembling a chimney according to claim 1 or 2, wherein the refractory brick is disassembled by separating it in a stepwise manner through joints on both sides of the joint where the wedge-shaped member bites.