JP3545890B2

JP3545890B2 - Vertical hole lining method and apparatus

Info

Publication number: JP3545890B2
Application number: JP29565296A
Authority: JP
Inventors: 栄器秋元; 浜夫山城; 直機北橋; 康北山
Original assignee: Sekisui Chemical Co Ltd
Current assignee: Sekisui Chemical Co Ltd
Priority date: 1996-10-17
Filing date: 1996-10-17
Publication date: 2004-07-21
Anticipated expiration: 2016-10-17
Also published as: JPH10121558A

Description

【０００１】
【発明の属する技術分野】
この発明は、管渠、特には下水道管渠の立孔いわゆる人孔（マンホール）におけるライニング施工方法及びその施工装置に関する。
【０００２】
【従来の技術】
本出願人は、先に、特開平５−１６９５３９号公報により、管渠におけるライニング施工方法並びにその装置を提案した。
すなわち、管渠内において長尺の板状体よりなる帯状体を螺旋状に巻回し、相互に隣接する帯状体の側縁部どおしを係合させることにより管状体を製造して該管状体により管路内周面をライニングするものである。
この先行技術によれば、環状の成形フレームを使用し、製管されるランニング管の前方に新たに供給される帯状部材をもってライニング管を付加形成するものであるので、管渠の曲がりに対応でき、画期的である。
しかしながら、管渠における立孔すなわち人孔にこの方法をもってライニングを施工することは未だなされていない。
更にまた、人孔の開口部は縮径されたものとなっており、その変断面に追従できないものである。
【０００３】
【発明が解決しようとする課題】
本発明はこの先行技術を更に発展させたものであり、立孔特には下水道管渠の人孔へのライニング施工を実現できる立孔のライニング施工方及びその施工装置を提供することを目的とする。
【０００４】
【課題を解決するための手段】
本発明の立孔のライニング施工方法は上記目的を達成するため、次の主たる構成を採る。
すなわち、立孔内において、両側縁部に継手が形成され連続的に供給される長尺の帯状部材を螺旋状に捲回し、相接する継手相互を係合させて形成された管状体を残置させ、前記既に形成された管状体の上方に新たに供給される帯状部材をもって管状体を付加形成する方法であって、円環状を保持する成形フレームを介して取り付けられ、前記既に形成された管状体と新たに供給される帯状部材との閉合部位に配されるとともに帯状部材を挟着する外面ローラと内面ローラとからなる接合機構部を有する製管装置をもってライニング用の管状体を製管するとともに、前記成形フレームは、該成形フレームから延設され立孔の壁面に当接する送りローラをもって製管中において立孔と実質的に同心状の位置を保持する姿勢を採ることを特徴とする。
本発明の立孔のライニング施工方法はまた、上記主たる構成に加え、前記接合機構部の移動量以上に新たに供給される帯状部材を送り込み、前記既に形成された管状体の帯状部材相互の継手部を滑動させて前記既に形成された管状体を拡径させることを特徴とする。
本発明の立孔のライニング施工方法は更に、上記主たる構成に加え、立孔の縮径部に至ると前記成形フレームを取り外し、接合機構部のみをもって製管し、立孔の径の変化に対応させて該管状体の径を変化させることを特徴とする。
本発明の立孔のライニング施工装置は上記方法を実施するためのものであり、以下の構成を採る。
すなわち、立孔内において、両側縁部に継手が形成され連続的に供給される長尺の帯状部材を螺旋状に捲回し、相接する継手相互を係合させて形成された管状体を残置させ、前記既に形成された管状体の上方に新たに供給される帯状部材をもって管状体を付加形成するライニング施工装置であって、円環状を保持し、周長を適宜に調整できる前記管状体の内側に配される成形フレーム；前記成形フレームを介して同一円周上に所定ピッチをもって取り付けられ、前記管状体の内面に当接する複数の案内ローラ；前記成形フレームを介して取り付けられ、前記既に形成された管状体と新たに供給される帯状部材との閉合部位に配されるとともに帯状部材を挟着する外面ローラと内面ローラとからなる接合機構部；前記成形フレームを介して取り付けられ、立孔の壁面に当接されるとともに該立孔の壁面に沿って回転する複数の送りローラ；を有してなり、前記複数の送りローラの少なくとも一つは主動駆動されることを特徴とする。
【０００５】
（作用）
本発明のライニング施工方法において、内面ローラと外面ローラとの挟着作用並びにこれらのローラの回転作用により帯状部材は螺旋状に上方に巻き上げられ、ライニング管は自立的に製管される。また、成形フレームはライニング管の製管精度（真円度）を保障するとともに、該成形フレームから延設された送りローラにより、製管中において、立孔の壁面から等距離を保ちライニング管は振れ運動を起こすことがなく、かつ、外面ローラの立孔の壁面との接触を防止し、円滑な製管をなす。
本ライニング施工装置の使用において、成形フレームを縮径することにより製管されたライニング管から当該成形フレームを容易に取り外すことができる。また、送りローラは立孔内での本装置の中心を保持し、かつ、立孔の壁面との摩擦をもって上昇力を得る。
作製されたライニング管あるいは作製中のライニング管と立孔の壁面との間隙にはセメントミルクが充填され、ライニング管の固定をなす。
【０００６】
【発明の実施の形態】
本発明の立孔のライニング施工方法及びその施工装置の実施の形態を図面に基づいて説明する。
図１〜図１２は本発明方法の実施に使用される立孔ライニング施工装置の一実施態様を示す。すなわち、図１及び図２は本ライニング施工装置Ｓの全体の概略を示し、図３〜図１２は本ライニング施工装置Ｓの各部の構成を示す。また、図１４・図１５は帯状部材の各態様を示す。
これらの図において、Ｈは立孔、Ｒはライニング管を示す。なお、本装置Ｓの進行方向（矢印イ）をもって、前部、後部とする。
【０００７】
帯状部材１００，１４０
図１４は本実施形態のライニング施工において使用される帯状部材の一例を示す。
帯状部材１００は本体が一定厚さの平板状をなし、その外面の長手方向に適宜数（図例では７）の突条１０２が連続的に縦設される。突条１０２に先端部にはフランジ１０２ａが形成される。突条１０２の相互間は溝１０４もしくは溝空間を形成する。内面１０６は実質的に平滑に形成される。
帯状部材１００の両側には互いに内外に重合して係合する接合部１００Ａ，１００Ｂが形成される。すなわち、前縁側接合部１００Ａはその前端部の突条１０２Ａの基部が膨径され、その内面側より凹溝１１０が縦設され、更にこの突条１０２Ａより張出し部１１２が連設される。後縁側接合部１００Ｂは後端部の突条１０２Ｂより張出し部１１４が張設され、該張出し部１１４の端部寄りに前記前縁側接合部１００Ａの凹溝１１０に係合する凸条１１６が縦設される。
接合時において、相隣れる帯状部材１００の前縁部と後縁部とが重なり合い、前縁側接合部１００Ａに後縁側接合部１００Ｂが後記する接合ローラ部の外面ローラと内面ローラとの挟着作用を受けて、凹溝１１０内に凸条１１６が、また、突条１０２Ｂのフランジ１０２ａ内に張出し部１１２の端部がそれぞれ嵌り込み、接合される。この場合、主たる係合は凹溝１１０と凸条１１６とによりなされ、張出し部１１２と突条１０２Ｂとは従たる係合をなすものであり、従って、場合によっては従たる係合は省略されうる。
更に、本実施形態では張出し部１１２，１１４の当接部分にはシール材１１８が介装され、接合性を高める。なお、接合部１００Ａ，１００Ｂにおける嵌合係合で十分であれば、当該シール材１１８を省略することができる。
帯状部材は合成樹脂の素材をもって作成され、特に成形性の観点から押出し形成により連続的に成形できる塩化ビニール（ＰＶＣ）樹脂が好適である。しかし金属製による成形を妨げるものではない。
【０００８】
図１５は更に他の帯状部材の態様を示す。
このものは主材（主帯状部材）１４０と嵌合材１５０との組み合わせよりなり、主材１４０は突条１４２及び溝１４４を有し、その両端部には接合部１４０Ａ，１４０Ｂが形成され、該接合部１４０Ａ，１４０Ｂに嵌合溝１４６が形成される。また、嵌合材１５０は主材１４０の嵌合溝１４６に弾圧的に嵌まり込む嵌合突条１５２を有する。
接合時において、相並べられた主材１４０の接合部１４０Ａ，１４０Ｂ間に跨って嵌合材１５０が接合される。
【０００９】
立孔ライニング施工装置Ｓ（図１〜図１２参照）
図１〜図１２を参照して、立孔ライニング施工を実施するライニング施工装置Ｓの構成を説明する。
図１及び図２に示されるように、このライニング施工装置Ｓは、所定幅を有し複数のリンク体により構成される環状体をなす成形フレーム１、この成形フレーム１に介装される周長調整機構２、該成形フレーム１のリンク機構の各軸部に配される複数の案内ローラ３、及び該成形フレーム１に取り付けられ、内面ローラ４と外面ローラ５とを含む接合機構部６、該接合機構部６に連動して配される主動送りローラ７、成形フレーム１の前面に同一円周上に取り付けられる複数の従動送りローラ８、の主要部からなる。
主動及び従動送りローラ７，８はそれぞれ主動送り機構部Ａ及び従動送り機構部Ｂの主体をなし、かつ、一連となって「送り機構部」を構成する。
【００１０】
以下、各部の細部構造を説明する。
成形フレーム１（図１〜図７参照）
成形フレーム１は、所要の幅のリンク機構をもって環状体をなし、かつ横剛性を有し、その一部は接合機構部６の取付け部となる。すなわち、この環状体の屈撓性は複数のリンク体１０が軸部１１を介して連なったリンク連鎖より得られる。
【００１１】
（リンク機構）（図３）
リンク体１０は、本実施形態では、図３・図４に示されるように、外側リンク体１０Ａと内側リンク体１０Ｂとの２態様を採り、交互に配される。
外側リンク体１０Ａは、全体としてＨ形をなし、相平行する側板１２とこれらの中央部においてこれらを剛的に繋ぐ連結板１３とからなる。側板１２の両側には円形の軸孔１４が開設される。
内側リンク体１０Ｂは、コ字形をなす２つの分割体１０ｂより組み立てられて全体として外側リンク体１０Ａと同形のＨ形をなす。すなわち、この分割体１０ｂは、短側板１５と背板１６とからなるコ字体をなし、背板１６相互を対接してボルト・ナットにより剛結され、Ｈ形体として一体的に組み立てられる。短側板１５には外側リンク体１０Ａの側板１２の軸孔１４に対応して円形の軸孔１７が開設される。
しかして、外側リンク体１０Ａと内側リンク体１０Ｂとは、外側リンク体１０Ａの側板１２の内側に内側リンク体１０Ｂの側板１５を重ねるとともに、それらの軸孔１４，１７の軸心を一致させ、該軸孔内に固定保持された軸受１８を介して軸部１１が挿通され、リンク機構を構成する。
【００１２】
（揺動機構）（図４）
リンク体１０の相互は所定の曲率角度を基準に、一定の範囲の揺れを調整する。このため、揺動機構が設けられるものであって、図５にその一例を示す。すなわち、一方のリンク体１０（Ｉ）の側板の端部にはストッパー用の凹部２０が凹設され、他のリンク体１０（ＩＩ）の側板には先のリンク体１０（Ｉ）側に突設するストッパー２１が固設されてなり、ストッパー２１がストッパー凹部２０の端面２０ａに当接することにより揺動が阻止される。
【００１３】
（取付け部）（図５）
取付け部は、他のリンク体と同様の構成を採り、内面ローラ４を抱持する２つの分割体２２，２３からなり、図５に示すように、分割体２３は接合機構部６との取付けに供される。分割体２２，２３の側板には前記した揺動機構が設けられる。
該取付け部の回転方向のリンク体１０ｂ’は、その前側板を後方へ後退され、細幅状をなす。その後退幅は帯状部材１００を受け入れるに十分な幅とされる。
【００１４】
本実施の形態の成形フレーム１においては、１７個のリンク体より構成されているが、これを減少させることも、あるいは増加させることも自由である。要は、施工対象となる管渠の径に合わせ、増減される。
【００１５】
周長調整機構２（図２、図６、図７）
周長調整機構２は、成形フレーム１のリンク機構の適宜箇所に配され、当該成形フレームの周長を調整する。
図６及び図７に示されるように、本周長調整機構２は、内側リンク体１０Ｂに装着され、更に具体的には当該分割体１０ｂの背板１６間に装着される。
しかして、この周長調整機構２は、相対向する背板１６に固設されたナット体２５、このナット体２５間に螺装され回動部２７を有する調整ボルト２６、からなる。
【００１６】
以下、更に詳しくその構成を述べる。
分割体１０ｂの背板１６には、本機構の取付け位置に対応して下方に張出し部１６ａが延設され、この張出し部１６ａを利用して調整ボルト２６の遊挿されるボルト挿通孔２８が開設される。なお、背板１６の高さが十分であれば、張出し部１６ａは必要でないことは勿論である。ナット体２５は、その内部に貫通状にねじ孔２５ａ，２５ｂを有する円筒体をなし、このボルト挿通孔２８に臨んで背板１６に溶接をもって強固に固設される。なお、対となるナット体２５のねじ孔２５ａ，２５ｂのねじは互いに逆に切られている。
調整ボルト２６は、十分な強度を持ち、中央の回動部２７を挟んで両端部に向けて互いに逆方向にねじが切られたねじ部２６ａ，２６ｂを有し、それらのねじ部２６ａ，２６ｂを対応するナット体２５のねじ孔２８ａ，２８ｂに螺合される。回動部２７は調整ボルト２６に一体的に形成され、外面が６角ナット状をなし、スパナ等の回動手段が把持され回動操作を受ける。
本実施形態の周長調整機構２は、１つの内側リンク体１０Ｂにおいて幅方向に２つ設けられているが、３つ以上であってもよく、その数に限定されない。
また、図２に示されるように、形成フレーム１の４箇所に配されているが、配置箇所は適宜に決められ、その数に限定されない。
しかして、調整ボルト２６の回動により、そのねじ部２６ａ，２６ｂに螺合された相対向するナット体２５は、互いに引き寄せられる方向あるいは離れる方向に移動し、これにより一対となった分割体１０ｂの背板１６間の距離βを自在に調整する。
【００１７】
案内ローラ３（図１〜図３、図５〜図７参照）
案内ローラ３は、成形フレーム１の各軸部１１に回転自在に装着される。該案内ローラ３は本実施例では軸部１１に一体に取り付けられたものとなっているが、軸受を介して取り付ける態様もある。ローラ本体は硬質の合成樹脂体あるいは金属体よりなり、帯状部材１００の内面に当接する。標準の案内ローラ３（３ａ）はリンク体１０の内幅一杯の長さを有するが、後記する接合機構部６の所要数（通常は１）の前方部の案内ローラ３（３ｂ）は帯状部材１００の幅だけ短くされる（図６・図７参照）。
【００１８】
接合機構部６（図１・図２、図５、図８〜図１０参照）
接合機構部６は、成形フレーム１の取付け部に装着される。
該接合機構部６は、内面ローラ４と外面ローラ５とが組となった接合ローラ部３０を主体とし、かつ、これらのローラ４，５の同期回転を図る歯車機構３１を収めるとともに、該歯車機構３１に連動する主動送りローラ７を保持する箱体３２、及び該箱体３２に取り付けられローラ４，５の回転駆動源としての油圧モータ３３を含み、該接合機構部６は螺旋状に捲回される帯状部材１００の接合部、すなわち当該帯状部材１００が最初に閉合する位置に対応して配される。
【００１９】
（箱体３２）（図８・図９参照）
箱体３２は、前後両側の四壁をもって剛性を保持し、外側部分３２Ａと内側部分３２Ｂとに分かれ、側部のピン軸３５により外側及び内側部分３２Ａ，３２Ｂは枢着され、このピン軸３５回りに外側部分３２Ａは開放可能とされる。
箱体３２は外側及び内側部分３２Ａ，３２Ｂにわたってその前後面により歯車機構３１の軸部の保持をなす。また、箱体３２の内側部分３２Ｂにおいて、前面部は油圧モータ３３の取付け部に供され、後面部は成形フレーム１の取付け部のリンク体に取り付けられる。
箱体３２の他の側面には外側部分３２Ａを内側部分３２Ｂへ閉合する閉合装置３７が取り付けられる。図示するものはその一例であって、外側部分３２Ａから突設されたリブ３８に連結棒３９が枢着され、また、内側部分３２Ｂにはリブ３８と同位相で二又状の受棚４０が突設され、連結棒３９はこの受棚４０の凹部に入り込む。連結棒３９にはコイルばね４１及びその端部のねじ部に螺合するナット４２が順次装着され、ナット４２の締込みをもってコイルばね４１を受棚４０の内面に押し付けるようにされている。これにより、コイルばね４１の弾性により外側部分３２Ａの締付け力が適宜に調整される。
【００２０】
（歯車機構３１）（図９参照）
歯車機構３１は、箱体３３の前後壁にわたって内方より順次、回転自在に架け渡された３つの軸部４４，４５，４６を有し、第１の軸部４４には歯車４８が固設され、第２の軸部４６には歯車４８に噛合する歯車４９が固設され、第３の軸部４７には歯車４９に噛合する歯車５０が固設される。そして、第２の軸部４５には内面ローラ４が連結され、第３の軸部４６には外面ローラ５が連結される。図示されるように、第１の軸部４４の回転に対して第２軸部４５は逆方向に、第３軸部４６は順方向に回転し、ひいては内面ローラ４と外面ローラ５とは互いに逆回転となる。なお、これらの歯数を調整することにより軸部４５，４６の回転数、ひいてはローラ４，５の回転数を調整することができる。
本実施例では２つの軸部４４，４５，４６は回転軸受をもって支持固定されてなるが、すべり軸受を用いることは自由である。
更に、第３の軸部４６に間隔保持用のスペーサローラ５１が回転自在に取り付けられる。該スペーサローラ５１は後記する主動送りローラ７と実質的に同径（小径を含む）とされ、その外周を管渠Ｐの内壁面に当接する。なお、該スペーサローラ５１は適宜省略されうる。
【００２１】
（主動送り機構部Ａと主動送りローラ７）（図９参照）
主動送りローラ７は、主動送り機構部Ａの主体をなす。主動送り機構部Ａは、箱体３２の外部において第２の軸部４５に固設される駆動スプロケット５３、第３の軸部４６に回転自在に装着されるスプロケット付き主動送りローラ７及びチェーン５４からなる。
駆動スプロケット５３は、その外周に歯車歯５３ａを有し、キーを介して、もしくはスプライン係合をもって第２の軸部４５に固定され、該軸部４５と一体に回転する。
主動送りローラ７は、小径部のスプロケット部５５と大径部の送りローラ部５６とからなり、軸受５７を介して第３の軸部４６に回転自在に装着される。スプロケット部５５はその外周に歯車歯５５ａを有する。送りローラ部５６は、本実施形態では鋼製素材よりなるが、適宜、その外周に帯状の弾性輪（図示せず）を装着されうる。
チェーン５４は、駆動スプロケット５３と主動送りローラ７のスプロケット部５５とに巻き掛けられ、駆動スプロケット５３の駆動力を主動送りローラ７に伝達する。
なお、チェーン５４は、箱体３２の開閉動作に伴い、取り外し可能なものいわゆる掛け継ぎ鎖が使用される。あるいはまた、駆動スプロケット５３及び主動送りローラ７はそれぞれの軸部４５，４６に挿脱自在とし、チェーン５４を一体に組み付けたこれらの送り機構部Ａのユニット体を、箱体３２の閉合状態で軸部４５，４６に挿入して組み付けをなす態様を採ることができる。この態様において、駆動スプロケット５３は第２の軸部４５とはスプライン係合をなす。
【００２２】
（油圧モータ３３）
油圧モータ３３は、その駆動軸３３ａを第１の軸部４４に連結して箱体３２の前面に取り付けられる。
該油圧モータ３３には、該油圧モータ３３に油を送るイン側配管５９ａと、該油圧モータ３３から油を排出するアウト側配管５９ｂとが接続される。更に、これらの配管５９は、箱体３２あるいは成形フレーム１の適宜位置に取り付けられる回転継手６０（図１参照）に接続され、該回転継手６０には外部の圧力源に連なる配管６１が接続される。
この回転継手６０を介することにより、回転動作を伴う油圧モータ３３側の配管５９と、回転動作のない外部側配管６１との間の作動流体の授受をなす。
この歯車機構３１・油圧モータ３３により、油圧モータ３３の駆動力は第１の軸部４４に伝達され、かつ、歯車機構３１を介して第２・第３の軸部４５，４６に伝達される。第２軸部４５と第３軸部４６とは互いに逆回転となる。
【００２３】
（接合ローラ部３０）（図１０参照）
接合ローラ部３０は、内面ローラ４と外面ローラ５とが互いに管軸方向に相並んで、かつ、両ローラ４，５の間に帯状部材１００を挟着するように所定の間隔を保って配される。
そして、前記したように、内面ローラ４は第２の軸部４５に直結的に取り付けられ、外面ローラ５は第３の軸部４６に直結的に取り付けられる。
【００２４】
図１０は接合ローラ部３０の詳細構造を示す。
図１０は接合ローラ部３０の内面及び外面の２つのローラ４，５を拡大して示すとともに、これらのローラ４，５と帯状部材１００との対応関係を示す。図示されるように、本実施形態ではこれらのローラ４，５は帯状部材１００の複数（本実施形態では３）スパンにわたって配される。また、Ｈは帯状部材１００相互の最初の閉合部を示す。
【００２５】
内面ローラ４は円筒状をなし、帯状部材１００の内面に密着し、閉合部Ｈを含め、外面ローラ５をもって外方から押圧される帯状部材１００を支持する。なお、内面ローラ４の前端部には拡径部４ａが形成され、かつ該拡径部４ａに帯状部材１００の内面の溝１１０に係合する鍔４ｂが突設されるものであるが、適宜省略されうる。
【００２６】
外面ローラ５は円筒本体６３に所定間隔をもって複数の輪状鍔部６４が形成されてなり、これらの輪状鍔部６４は帯状部材１００の突条１０２間の溝１０４に嵌まり込む。また、円筒本体６３の外周は帯状部材１００の突条１０２の外面に圧接される。該円筒本体６３の外面にはローレット加工が施され、帯状部材１００との滑りを防ぐ。また、その一部６３ａは小径にされ、突条１０２から外れる。
輪状鍔部６４に付き、閉合部Ｈに対応する２個一対の輪状鍔部６４ａはその周側部が帯状部材１００に当接する。他の輪状鍔部６４については格別当接する必要はなく、突条１０２間の溝１０４に嵌まり込むことが肝要である。
【００２７】
この接合機構部６のライニング管Ｒへの取付けは、箱体３２の外側部分３２Ａを開放し、外面ローラ４の輪状鍔部６４を帯状部材１００の突条１０２のピッチに合致させ、かつ、閉合部Ｈに輪状鍔部６４ａを位置させ、しかる後、外側部分３２Ａを内側部分３２Ｂに閉合し、閉合装置３７を閉鎖し、そのナット４２を締め込んでなす。
【００２８】
（従動送り機構部Ｂ及び従動送りローラ８）（図１、図２、図１１、図１２）
従動送りローラ８は従動送り機構部Ｂの主体をなし、取付けフレーム１の前面に固定される反力部材６６、該反力部材６６に一端を固定され、他端を従動送りローラ８の保持枠６７に固定される押出し装置６８、及び押出し装置６８の案内部材６９、とともに従動送り機構部Ｂを構成する。
この従動送りローラ８は複数個設けられ、各々は帯状部材１００の巻かれる螺旋ピッチに対応して傾斜させられている。
押出装置６８はいわゆる空圧式のシリンダ装置であって、シリンダ部６８ａとピストンロッド部６８ｂとからなり、シリンダ部６８ａは取付けフレーム１に固定された案内部材６９により摺動自在に抱持される。
該従動送り機構部Ｂには更に、ブレーキ装置７０が付加される。
７１は空圧管であって、回転継手（図示せず）を介して外部の空圧源に導かれる。
押出装置６８の作動により、従動送りローラ８は管渠の壁面に押し付けられ、本立孔ライニング施工装置Ｓの立孔Ｈでの中心を保持する。また、ブレーキ装置７０を作動させると、本立孔ライニング施工装置Ｓは立孔に不動状態に固定される。
【００２９】
立孔Ｈ内のライニング施工
本実施形態のライニング施工装置Ｓを使用してなされる立孔内のライニング施工方法を説明するとともに、併せてその施工装置Ｓの作用を説明する。
図１３はそのライニング施工工事の概要を示す。本実施の形態の方法では下水道管渠Ｐにおける人孔Ｈへの適用例を示す。人孔Ｈは開口部付近において下方に向けて拡径し、それより下部は同一径を保つ。図において、Ｈ１は下流側人孔、Ｈ２は上流側人孔である。
下水道管渠Ｐのライニングの施工は上流より下流に向けてなされる。Ｑはそのライニング管であり、下水道管渠Ｐとライニング管Ｑの間隙にはセメントミルクＭが充填される。
上流側人孔Ｈ２には既にライニングＲが施され、下流側人孔Ｈ１においてライニング施工工事がなされる。
図１３に示されるように、下流側人孔Ｈ１側の地上部においては、帯状部材１００を巻き付けた巻出し装置Ｔ及び油圧駆動源Ｇが相並べて配される。
【００３０】
以下、施工方法の一形態例を工程順に説明する。
（１）人孔Ｈ１の底部に架台Ｋを設置する。該架台Ｋはライニング施工装置Ｓ及びライニング管の重量を支持し、かつ、作製されるライニング管Ｒの反力を受けるものであり、人孔Ｈに強固に設置される。
なおまた、この架台Ｋは下水道管渠Ｐの水流の通過を妨げるものではない。
【００３１】
（２）一方、本ライニング施工装置Ｓを人孔Ｈ１の開口を介して人孔Ｈ１内に搬入し、架台Ｋ上に設置する。本施工装置Ｓの成形フレーム１は分解・組立て可能となっており、人孔Ｈ１内への搬入は容易である。すなわち、人孔Ｈの開口部は小さいが、内側リンク体１０Ｂの背板１６相互のボルト・ナットを取り外すか、あるいは周長調整機構２の駆動ボルト２６を取り外すことにより、その搬入は容易になされる。搬入後、再び前述のボルト・ナットあるいは駆動ボルト２６を取り付け、成形フレーム１を環状体となす。駆動ボルト２６の回転により間隔を調整し、成形フレーム１の周長（径）を調整する。更に、接合機構部６はこの成形フレーム１に取付け可能となっており、現場での取付けがなされる。
この時、従動送り機構部Ｂにおいては押出し装置６８をもって従動送りローラ８を後退しておく。
【００３２】
（３）帯状部材１００を人孔Ｈ１内に引き込み、人孔Ｈ１内において帯状部材１００を手作業にて数回（３回程度）捲回し、ライニング管（これを開始用ライニング管という）Ｒｏを作製する。この開始用ライニング管Ｒｏは帯状部材１００の弾性により拘束力の加わらない自然状態で円形を保持する。
【００３３】
（４）この開始用ライニング管Ｒｏの内側に本施工装置Ｓの成形フレーム１を組み込み、該開始用ライニング管Ｒｏの上縁において、本ライニング施工装置Ｓの接合機構部６を所定状態に設置する。すなわち、接合ローラ部３０の内面ローラ４と外面ローラ５とをライニング管Ｒｏの閉合部に配するものであり、外面ローラ５の輪状鍔部６４を帯状部材１００の溝１０４に嵌め込み、特に輪状鍔部６４ａを閉合部Ｈに正確に当接する。また、内面ローラ４の鍔４ｂを帯状部材１００の凹溝１１０に係合させる。
同時に、主動送り機構部Ａを所定の連動状態に設定する。かつ、この状態で、従動送り機構部Ｂの従動送りローラ７を伸長し、人孔Ｈ１の壁面に当接するように調整する。これにより、本ライニング施工装置Ｓは人孔Ｈ１の中心に保持される。
【００３４】
（５）接合機構部６並びに主動送り機構部Ａを駆動する。
接合機構部６においては、その内外面ローラ４，５を回転駆動し、内面ローラ４と外面ローラ５との挟着力をもって、帯状部材１００の閉合部Ｈにおいて、その継手構造により開始用ライニング管Ｒｏに連なって新たに供給される帯状部材１００は接合される。同時に、外面ローラ５の輪状鍔部６４と帯状部材１００の溝１０４との係合案内作用により、本施工装置Ｓの全体は人孔Ｈ１の管周方向に自転する。
これと同時に、主動送り機構部Ａも駆動され、帯状部材１００は螺旋状に捲回され、人孔Ｈ１の管軸方向に上昇移動しつつライニング管Ｒが製管される。
【００３５】
（５Ａ）この工程において、主動及び従動送り機構部Ａ，Ｂの各送りローラ７，８は、人孔Ｈ１の管壁に当接し、本装置Ｓの回転する方向すなわち順方向に回転することにより、本装置Ｓの回転を円滑になす。
すなわち、油圧モータ３３の回転により第１の軸部４４が回転駆動され、歯車４８，４９を介して第２の軸部４５を回転駆動する。これにより、駆動スプロケット５３は軸部４５と一体的に回転し、該駆動スプロケット５３に巻き掛けられたチェーン５４を介して主動送りローラ７が回転される。駆動スプロケット５３と主動送りローラ７とは同一方向に回転し、ひいては内面ローラ４と同一方向となる。
主動送りローラ７は人孔Ｈ１の壁面に当接し、その回転により壁面から反作用を受けて本ライニング施工装置Ｓに回転力を付与し、本ライニング施工装置Ｓの回転速度を規定する。
同時に従動送りローラ８も人孔Ｈ１の壁面に押し付けられ、これらの送りローラ７，８により本装置Ｓの中心を保持するとともに、これらの送りローラ７，８の周面と人孔Ｈ１の壁面との周面摩擦により、本施工装置Ｓの自重に打ち勝って、落下を阻止する。従って、送りローラ７，８の周面に摩擦を保持する手段を付加することにより、自己上昇力を得ることができる。
【００３６】
（５Ｂ）なおまた、この工程において、帯状部材１００は地上部に配された巻出し装置Ｔより順次供給される。すなわち、巻出し装置Ｔの巻胴に巻き付けられた帯状部材１００は順次繰り出され、人孔Ｈ１内で螺旋状をなして接合機構部６に供給される。
また、油圧駆動源Ｇからの油圧管路はこの帯状部材１００の螺旋内に挿通され、油圧モータ３３に導かれる。
【００３７】
（６）以上の工程をもって所定の高さまで、すなわち人孔Ｈ１の開口部付近まで、ライニング管Ｒを製管する。しかる後、従動機構部Ｂのブレーキ装置７０を作動して従動ローラ８に制動を掛け、本ライニング施工装置Ｓを固定する。一方、ライニング管Ｒの下端部を固定把持する。
この状態で、接合機構部６を更に駆動させる。該接合機構部６の接合ローラ部３０の駆動により、自転製管量以上に既に形成されたライニング管Ｒに帯状部材１００が送り込まれ、その継手部における係合力に打ち勝って、その分量だけライニング管Ｒはその径を拡径する。なお、このとき、主動ローラ７は空転状態となる。
図１はこの状態を示す。すなわち、接合機構部６付近では内面及び外面ローラ４，５により帯状部材１００の拡がりは規制されるが、それ以外では継手部での滑りにより拡径され、人孔Ｈ１の壁面に拘束されるまで拡張する。
【００３８】
（７）しかる後、接合機構部６の成形フレーム１との固定を解除し、本施工装置Ｓを既に作製されたライニング管Ｒから取り外す。そして、本施工装置Ｓは、工程（２）で述べたように分割することができ、人孔Ｈの開口を介して外部へ搬出される。
【００３９】
（８）接合機構部６を駆動し、人孔Ｈ１の開口の傾斜に沿わせ、ライニング管Ｒを縮径させつつ上方へ巻き上げてゆく。接合機構部６は巻上げ作業が完了すれば取り外される。
【００４０】
（９）人孔Ｈ１内にライニング管Ｒが施工されると、人孔Ｈ１とライニング管Ｒとの間隙にセメントミルクＭが充填され、その固結を待って本実施形態の施工工事は完了する。
【００４１】
上記の工程に付き、（６）においてライニング管Ｒの拡径作業をなしたが、（５）の製管工程と同時的に拡径作業をなすことができる。また、拡径はライニング管Ｒが人孔の壁面に密着するまでなすことを通常とするが、適宜の径を採ることができる。
【００４２】
更には、拡径をせず、そのまま成形フレーム１の取外し作業をする態様を採りうる。この場合、本施工装置Ｓでは周長調整機構２を有することにより、本取外し作業は容易に行われる。すなわち、周長調整機構２の駆動ボルト２６を回動し、間隔を縮小させる。これにより、成形フレーム１は全体的に径を縮小させ、ライニング管Ｒから分離し、本施工装置Ｓの取外しがなされる。
【００４３】
本発明は叙上の実施の形態にのみ限定されるものではなく、本発明の基本的技術思想の範囲内で種々設計変更が可能である。すなわち、以下の態様は本発明の技術的範囲内に包含される。
▲１▼成形フレーム１において、外側リンク体１０Ａと内側リンク体１０Ｂとは実施の形態に限らず、外側リンク体１０Ａがコ字形の組合せ体よりなり、内側リンク体１０ＢがＨ形をなす形態、あるいは、外側及び内側ともにコ字形又はＨ形を採ることができる。更に、Ｈ形のリンク体において連結板１３を２枚以上にしてもよい。
▲２▼接合機構部６において、油圧駆動に限定されるものではなく、空気圧モータあるいは電動モータを採用することができる。空気圧モータを採るとき、回転継手６０の採用に変わりがないが、電動モータを採るとき、回転継手に替えて回転ブラシを採る。
あるいはまた、手動機構を除外するものではなく、歯車機構３１を介してハンドル操作をもってローラ４，５を駆動する。
【００４４】
【発明の効果】
本発明によれば、立孔において、真円度の高いライニング管を円滑に製作することができる。
また、立孔の開口部付近の縮径作業においては、成形フレームの取外しが容易に行われ、接合機構部のみで動力による作業をなすことができ、大きな施工性を発揮できる。
【図面の簡単な説明】
【図１】本発明の立孔内のライニング施工装置の一実施形態の全体を示す縦断面図。
【図２】本ライニング施工装置の一部を省略した正面図。
【図３】成形フレームの一部断面平面図。
【図４】成形フレームの揺動機構を示す図。
【図５】成形フレームの取付け部の側面図。
【図６】成形フレームに配された周長調整機構の一部断面平面図。
【図７】図６のＶＩＩ−ＶＩＩ線断面図。
【図８】接合機構部の正面図（図９のＶＩＩＩ方向矢視図）。
【図９】接合機構部の中央縦断面図（図８のＩＸ−ＩＸ線断面図）。
【図１０】接合機構部の接合ローラ部の構成図。
【図１１】従動送り機構部の側面構成図。
【図１２】従動送り機構部の正面構成図（図１１のＸＩＩ−ＸＩＩ線断面図）。
【図１３】施工工事の要領図。
【図１４】（ａ）図は本発明で使用される帯状部材の一態様を示す断面図。
（ｂ）図はこの帯状部材相互の接合関係を示す断面図。
【図１５】（ａ）図は本発明で使用される帯状部材の他の態様を示す断面図。
（ｂ）図はこの帯状部材相互の接合関係を示す断面図。
【符号の説明】
Ｈ…立孔、Ｒ…ライニング管、Ｓ…ライニング施工装置、１…成形フレーム、２…周長調整機構、３…案内ローラ、４…内面ローラ、５…外面ローラ、６…接合機構部、７…主動送りローラ、８…従動送りローラ、１０…リンク体、１００…帯状部材[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a method and an apparatus for lining a sewer, in particular, a so-called manhole in a sewer sewer.
[0002]
[Prior art]
The applicant of the present invention has previously proposed a lining construction method and its apparatus in a sewer in Japanese Unexamined Patent Publication No. Hei 5-169539.
That is, a tubular body made of a long plate-like body is spirally wound in a sewer, and a tubular body is manufactured by engaging side edges of adjacent belt-like bodies with each other. The inner lining of the pipeline is lined by the body.
According to this prior art, an annular forming frame is used, and a lining pipe is additionally formed with a newly supplied band-shaped member in front of a running pipe to be formed. , Is breakthrough.
However, lining has not yet been applied to a vertical hole in a sewer, that is, a human hole by this method.
Furthermore, the opening of the human hole has a reduced diameter, and cannot follow the variable cross section.
[0003]
[Problems to be solved by the invention]
The present invention is a further development of this prior art, and has an object to provide a method and apparatus for lining a vertical hole capable of realizing lining work on a human hole of a vertical hole, particularly a sewer pipe. .
[0004]
[Means for Solving the Problems]
In order to achieve the above object, a method for lining a vertical hole according to the present invention employs the following main configuration.
In other words, in the vertical hole, a long band-shaped member which is formed with joints on both side edges and is continuously supplied is spirally wound, and a tubular body formed by engaging the joints in contact with each other is left. A method of additionally forming a tubular body with a band-shaped member newly supplied above the already formed tubular body, wherein the tubular body is attached via a molding frame holding an annular shape, A pipe body for lining is formed by a pipe forming apparatus which is disposed at a portion where the body and a newly supplied band-shaped member are closed and has a joining mechanism portion including an outer roller and an inner roller that sandwich the band-shaped member. In addition, the molding frame adopts a posture in which a feed roller extending from the molding frame and abutting against a wall surface of the vertical hole holds a position substantially concentric with the vertical hole during pipe production. .
The method of lining a hole according to the present invention further includes, in addition to the above-described main configuration, feeding a newly supplied belt-shaped member in an amount equal to or more than the moving amount of the joining mechanism, and joining the belt-shaped members of the already formed tubular body to each other. The part is slid to expand the diameter of the already formed tubular body.
The method of lining a hole according to the present invention further includes, in addition to the above main configuration, removing the forming frame when the diameter of the hole is reduced, forming a pipe only with the joining mechanism, and coping with a change in the diameter of the hole. In this case, the diameter of the tubular body is changed.
The vertical hole lining construction apparatus of the present invention is for performing the above method, and has the following configuration.
In other words, in the vertical hole, a long band-shaped member which is formed with joints on both side edges and is continuously supplied is spirally wound, and a tubular body formed by engaging the joints in contact with each other is left. A lining construction apparatus for additionally forming a tubular body with a band-shaped member newly supplied above the already formed tubular body, wherein the lining construction apparatus has an annular shape, and a circumference thereof can be appropriately adjusted. A forming frame disposed on the inside; a plurality of guide rollers mounted on the same circumference at a predetermined pitch through the forming frame and abutting on an inner surface of the tubular body; A joining mechanism portion, which is disposed at a portion where the formed tubular body and a newly supplied band-shaped member are closed and includes an outer roller and an inner roller that sandwich the band-shaped member; A plurality of feed rollers that are in contact with the wall surface of the upright hole and rotate along the wall surface of the upright hole; at least one of the plurality of feed rollers is driven and driven. Features.
[0005]
(Action)
In the lining construction method of the present invention, the belt-shaped member is spirally wound upward by the pinching action between the inner roller and the outer roller and the rotating action of these rollers, and the lining pipe is formed independently. In addition, the forming frame ensures the pipe forming accuracy (roundness) of the lining pipe, and the feed roller extended from the forming frame keeps the lining pipe at an equal distance from the wall surface of the upright hole during the pipe forming. It does not cause any swaying motion and prevents the outer roller from contacting the wall surface of the upright hole, thus making a smooth pipe production.
In the use of the present lining construction apparatus, the forming frame can be easily removed from the formed lining tube by reducing the diameter of the forming frame. The feed roller holds the center of the apparatus in the vertical hole, and obtains a rising force by friction with the wall surface of the vertical hole.
The produced lining tube or the gap between the lining tube being manufactured and the wall surface of the standing hole is filled with cement milk to fix the lining tube.
[0006]
BEST MODE FOR CARRYING OUT THE INVENTION
An embodiment of a method and an apparatus for lining a vertical hole according to the present invention will be described with reference to the drawings.
1 to 12 show one embodiment of a vertical lining construction apparatus used for carrying out the method of the present invention. That is, FIGS. 1 and 2 schematically show the entirety of the lining construction apparatus S, and FIGS. 3 to 12 show the configuration of each part of the lining construction apparatus S. FIGS. 14 and 15 show various aspects of the belt-shaped member.
In these figures, H indicates a standing hole, and R indicates a lining tube. In addition, the forward direction and the rear portion are defined as the traveling direction (arrow A) of the device S.
[0007]
Belt members 100 and 140
FIG. 14 shows an example of a belt-like member used in the lining work of the present embodiment.
The belt-shaped member 100 has a main body in the form of a flat plate having a constant thickness, and an appropriate number (seven in the illustrated example) of ridges 102 are continuously provided in the longitudinal direction of its outer surface. A flange 102a is formed at the tip of the ridge 102. A groove 104 or a groove space is formed between the ridges 102. The inner surface 106 is formed substantially smooth.
Joint portions 100A and 100B are formed on both sides of the belt-shaped member 100 so as to be overlapped and engaged with each other. That is, the base of the ridge 102A at the front end of the front edge side joint 100A is expanded, the concave groove 110 is vertically provided from the inner surface side, and the overhang 112 is continuously provided from the ridge 102A. The trailing edge-side joining portion 100B has a projecting portion 114 extending from the projecting ridge 102B at the rear end, and a ridge 116 that engages with the concave groove 110 of the leading edge-side joining portion 100A is formed near the end of the projecting portion 114. Is established.
At the time of joining, the leading edge and the trailing edge of the adjacent belt-shaped members 100 overlap, and the trailing edge joining portion 100B sandwiches the outer roller and the inner roller of the joining roller portion described later on the leading edge joining portion 100A. In response to this, the ridge 116 is fitted into the concave groove 110, and the end of the overhang portion 112 is fitted into the flange 102a of the ridge 102B, and joined. In this case, the main engagement is performed by the concave groove 110 and the protruding ridge 116, and the overhanging portion 112 and the protruding ridge 102B make a subordinate engagement. Therefore, the subordinate engagement may be omitted in some cases. .
Further, in the present embodiment, a sealing material 118 is interposed at the abutting portions of the overhang portions 112 and 114 to enhance the joining property. Note that if the fitting engagement at the joining portions 100A and 100B is sufficient, the sealing material 118 can be omitted.
The belt-shaped member is made of a synthetic resin material, and a vinyl chloride (PVC) resin, which can be continuously molded by extrusion, is particularly preferable from the viewpoint of moldability. However, this does not hinder metal molding.
[0008]
FIG. 15 shows still another embodiment of the belt-shaped member.
This is composed of a combination of a main material (main band-shaped member) 140 and a fitting material 150. The main material 140 has a ridge 142 and a groove 144, and joints 140A and 140B are formed at both ends thereof. A fitting groove 146 is formed in the joints 140A and 140B. In addition, the fitting member 150 has a fitting ridge 152 that is elastically fitted into the fitting groove 146 of the main member 140.
At the time of joining, the fitting material 150 is joined across the joining portions 140A and 140B of the main material 140 arranged side by side.
[0009]
Vertical hole lining construction equipment S(See FIGS. 1 to 12)
With reference to FIGS. 1 to 12, a configuration of a lining construction apparatus S that performs a vertical lining construction will be described.
As shown in FIGS. 1 and 2, the lining construction apparatus S includes a molding frame 1 having a predetermined width and having an annular body constituted by a plurality of link bodies, and a circumferential length interposed in the molding frame 1. An adjusting mechanism 2, a plurality of guide rollers 3 arranged on each shaft of a link mechanism of the forming frame 1, and a joining mechanism 6 attached to the forming frame 1 and including an inner roller 4 and an outer roller 5; It comprises a main part of a main feed roller 7 arranged in conjunction with the joining mechanism 6 and a plurality of driven feed rollers 8 mounted on the same circumference on the front surface of the molding frame 1.
The main and driven feed rollers 7 and 8 are driven by a main feed mechanism A and a driven feed mechanism B, respectively.ofIt constitutes the main body and constitutes a "feeding mechanism" in a series.
[0010]
Hereinafter, the detailed structure of each part will be described.
Molding frame 1(See FIGS. 1 to 7)
The molding frame 1 forms an annular body with a link mechanism of a required width and has a lateral rigidity, and a part thereof serves as an attachment portion of the joining mechanism 6. That is, the flexibility of the annular body is obtained from a link chain in which the plurality of link bodies 10 are connected via the shaft 11.
[0011]
(Link mechanism) (Fig. 3)
In the present embodiment, as shown in FIGS. 3 and 4, the link bodies 10 take two forms of an outer link body 10A and an inner link body 10B, and are arranged alternately.
The outer link body 10A has an H shape as a whole, and includes side plates 12 that are parallel to each other and a connecting plate 13 that rigidly connects them at a central portion thereof. Circular shaft holes 14 are formed on both sides of the side plate 12.
The inner link body 10B is assembled from two U-shaped divided bodies 10b to form an H-shape that is the same as the outer link body 10A as a whole. That is, the divided body 10b forms a U-shaped body composed of the short side plate 15 and the back plate 16, and the back plates 16 are rigidly connected to each other by bolts and nuts in contact with each other, and are integrally assembled as an H-shaped body. The short side plate 15 has a circular shaft hole 17 corresponding to the shaft hole 14 of the side plate 12 of the outer link body 10A.
Thus, the outer link body 10A and the inner link body 10B overlap the side plate 15 of the inner link body 10B inside the side plate 12 of the outer link body 10A, and align the axial centers of their shaft holes 14, 17 with each other. The shaft portion 11 is inserted through a bearing 18 fixed and held in the shaft hole, and forms a link mechanism.
[0012]
(Swing mechanism) (Fig. 4)
The link members 10 adjust the swing in a certain range based on a predetermined curvature angle. For this reason, a swing mechanism is provided, and FIG. 5 shows an example thereof. That is, a concave portion 20 for a stopper is formed at an end of the side plate of one link body 10 (I), and the side plate of the other link body 10 (II) protrudes toward the link body 10 (I). The stopper 21 to be provided is fixed, and the stopper 21 abuts on the end face 20 a of the stopper recess 20, thereby preventing the swing.
[0013]
(Mounting part) (Fig. 5)
The mounting portion has the same configuration as the other link members, and is composed of two divided bodies 22 and 23 for holding the inner roller 4. As shown in FIG. 5, the divided body 23 is attached to the joining mechanism 6. Offered to The swing mechanism described above is provided on the side plates of the divided bodies 22 and 23.
The link body 10b 'in the rotation direction of the mounting portion has its front side plate retracted rearward, and has a narrow width. Thereafter, the retreat width is set to a width sufficient to receive the belt-shaped member 100.
[0014]
Although the molded frame 1 of the present embodiment is composed of 17 link bodies, it can be reduced or increased freely. In short, it is increased or decreased according to the diameter of the sewer to be constructed.
[0015]
Circumference adjustment mechanism 2(FIGS. 2, 6, and 7)
The circumference adjusting mechanism 2 is arranged at an appropriate position of the link mechanism of the molding frame 1 and adjusts the circumference of the molding frame.
As shown in FIGS. 6 and 7, the circumference adjusting mechanism 2 is mounted on the inner link body 10B, and more specifically, is mounted between the back plates 16 of the divided body 10b.
The peripheral length adjusting mechanism 2 includes a nut body 25 fixed to the opposing back plate 16, and an adjusting bolt 26 screwed between the nut bodies 25 and having a rotating part 27.
[0016]
Hereinafter, the configuration will be described in more detail.
A projecting portion 16a extends downward from the back plate 16 of the split body 10b corresponding to the mounting position of the mechanism, and a bolt insertion hole 28 into which the adjustment bolt 26 is loosely inserted is opened using the projecting portion 16a. Is done. If the height of the back plate 16 is sufficient, it is a matter of course that the overhang portion 16a is not necessary. The nut body 25 forms a cylindrical body having screw holes 25a and 25b penetrating therein, and is firmly fixed to the back plate 16 by welding to face the bolt insertion hole 28. The screws of the screw holes 25a, 25b of the nut body 25 that are paired are cut in opposite directions.
The adjusting bolt 26 has sufficient strength, and has screw portions 26a and 26b which are threaded in opposite directions toward both ends with the center rotating portion 27 interposed therebetween, and these screw portions 26a and 26b are provided. Are screwed into the screw holes 28a and 28b of the corresponding nut body 25. The rotating portion 27 is formed integrally with the adjusting bolt 26, has an outer surface in the shape of a hexagonal nut, and receives a rotating operation by gripping a rotating means such as a spanner.
Although two perimeter adjusting mechanisms 2 of the present embodiment are provided in the width direction in one inner link body 10B, three or more perimeter adjusting mechanisms 2 may be provided, and the number is not limited.
In addition, as shown in FIG. 2, they are arranged at four places of the forming frame 1, but the arrangement places are appropriately determined, and the number is not limited.
When the adjusting bolt 26 rotates, the opposing nut bodies 25 screwed into the screw portions 26a and 26b move in a direction of being drawn toward or away from each other, thereby forming a pair of divided bodies 10b. The distance β between the back plates 16 is freely adjusted.
[0017]
Guide roller 3(See FIGS. 1 to 3 and FIGS. 5 to 7)
The guide roller 3 is rotatably mounted on each shaft 11 of the molding frame 1. In this embodiment, the guide roller 3 is integrally attached to the shaft portion 11, but may be attached via a bearing. The roller body is made of a hard synthetic resin body or a metal body, and contacts the inner surface of the belt-shaped member 100. The standard guide roller 3 (3a) has a length that is the same as the inner width of the link body 10, but the guide roller 3 (3b) at the front of the required number (usually 1) of the joining mechanism 6 described later is a belt-shaped member. It is shortened by a width of 100 (see FIGS. 6 and 7).
[0018]
Joining mechanism 6(Refer to FIG. 1, FIG. 2, FIG. 5, FIG. 8 to FIG. 10)
The joining mechanism 6 is mounted on a mounting portion of the molding frame 1.
The joining mechanism section 6 mainly includes a joining roller section 30 in which the inner roller 4 and the outer roller 5 are paired, and accommodates a gear mechanism 31 for rotating these rollers 4 and 5 synchronously. A box 32 holding the main feed roller 7 linked to the mechanism 31, and a hydraulic motor 33 attached to the box 32 and serving as a rotation drive source for the rollers 4 and 5, and the joining mechanism 6 is spirally wound. It is arranged corresponding to the joint portion of the band-shaped member 100 to be turned, that is, the position where the band-shaped member 100 is first closed.
[0019]
(Box 32) (see FIGS. 8 and 9)
The box body 32 has rigidity with four walls on both front and rear sides, and is divided into an outer portion 32A and an inner portion 32B. The outer and inner portions 32A and 32B are pivotally connected to each other by a pin shaft 35 on the side portion. The outer portion 32A can be opened around.
The box body 32 holds the shaft of the gear mechanism 31 by its front and rear surfaces over the outer and inner portions 32A and 32B. In the inner portion 32B of the box 32, the front surface portion is provided for a mounting portion of the hydraulic motor 33, and the rear surface portion is mounted to a link body of the mounting portion of the forming frame 1.
A closing device 37 for closing the outer portion 32A to the inner portion 32B is attached to the other side surface of the box 32. The illustrated one is an example, in which a connecting rod 39 is pivotally mounted on a rib 38 protruding from an outer portion 32A, and a bifurcated receiving shelf 40 is provided on the inner portion 32B in the same phase as the rib 38. The connecting rod 39 is protruded, and enters the concave portion of the receiving shelf 40. A coil spring 41 and a nut 42 that is screwed into a threaded portion of the end of the coil spring 41 are sequentially mounted on the connecting rod 39, and the coil spring 41 is pressed against the inner surface of the receiving shelf 40 by tightening the nut 42. Thereby, the tightening force of the outer portion 32A is appropriately adjusted by the elasticity of the coil spring 41.
[0020]
(Gear mechanism 31) (see FIG. 9)
The gear mechanism 31 has three shaft portions 44, 45, 46 that are sequentially and rotatably bridged from inside toward the front and rear walls of the box 33, and a gear 48 is fixed to the first shaft portion 44. A gear 49 that meshes with the gear 48 is fixed to the second shaft portion 46, and a gear 50 that meshes with the gear 49 is fixed to the third shaft portion 47. The inner roller 4 is connected to the second shaft 45, and the outer roller 5 is connected to the third shaft 46. As shown in the drawing, the second shaft 45 rotates in the reverse direction and the third shaft 46 rotates in the forward direction with respect to the rotation of the first shaft 44, so that the inner roller 4 and the outer roller 5 are mutually moved. Reverse rotation. The number of teeth can be adjusted to adjust the number of rotations of the shaft portions 45 and 46, and hence the number of rotations of the rollers 4 and 5.
In the present embodiment, the two shaft portions 44, 45, 46 are supported and fixed with a rotary bearing, but a sliding bearing can be used freely.
Further, a spacer roller 51 for maintaining a gap is rotatably attached to the third shaft portion 46. The spacer roller 51 has substantially the same diameter (including a small diameter) as the driving roller 7 to be described later, and its outer periphery is in contact with the inner wall surface of the pipe P. The spacer roller 51 can be omitted as appropriate.
[0021]
(Driving mechanism A and driving roller 7) (See FIG. 9)
The drive roller 7 is a main component of the drive mechanism A. The driving mechanism A includes a driving sprocket 53 fixed to the second shaft 45 outside the box 32, a driving roller 7 with a sprocket rotatably mounted on the third shaft 46, and a chain 54. Consists of
The driving sprocket 53 has gear teeth 53a on its outer periphery, is fixed to the second shaft 45 through a key or by spline engagement, and rotates integrally with the shaft 45.
The main feed roller 7 includes a sprocket portion 55 having a small diameter portion and a feed roller portion 56 having a large diameter portion, and is rotatably mounted on the third shaft portion 46 via a bearing 57. The sprocket portion 55 has gear teeth 55a on its outer periphery. Although the feed roller portion 56 is made of a steel material in the present embodiment, a belt-shaped elastic ring (not shown) may be appropriately attached to the outer periphery thereof.
The chain 54 is wound around the driving sprocket 53 and the sprocket portion 55 of the driving feed roller 7, and transmits the driving force of the driving sprocket 53 to the driving feed roller 7.
As the chain 54, a so-called splicing chain that can be detached with the opening and closing operation of the box 32 is used. Alternatively, the drive sprocket 53 and the main feed roller 7 can be inserted into and removed from the respective shaft portions 45 and 46, and the unit bodies of these feed mechanism units A having the chain 54 integrally assembled are closed in the closed state of the box 32. An aspect of assembling by inserting into the shaft portions 45 and 46 can be adopted. In this embodiment, the drive sprocket 53 is in spline engagement with the second shaft 45.
[0022]
(Hydraulic motor 33)
The hydraulic motor 33 is attached to the front surface of the box 32 by connecting the drive shaft 33 a to the first shaft portion 44.
The hydraulic motor 33 is connected to an in-side pipe 59a for sending oil to the hydraulic motor 33 and an out-side pipe 59b for discharging oil from the hydraulic motor 33. Further, these pipes 59 are connected to a rotary joint 60 (see FIG. 1) mounted at an appropriate position on the box body 32 or the forming frame 1, and a pipe 61 connected to an external pressure source is connected to the rotary joint 60. You.
By passing through the rotary joint 60, the working fluid is exchanged between the pipe 59 on the hydraulic motor 33 side that rotates and the external pipe 61 that does not rotate.
The driving force of the hydraulic motor 33 is transmitted to the first shaft portion 44 by the gear mechanism 31 and the hydraulic motor 33, and is also transmitted to the second and third shaft portions 45 and 46 via the gear mechanism 31. . The second shaft portion 45 and the third shaft portion 46 rotate in opposite directions.
[0023]
(Joint roller part 30) (see FIG. 10)
The joining roller portion 30 is arranged with the inner roller 4 and the outer roller 5 being arranged side by side in the tube axis direction and maintaining a predetermined interval so that the belt-shaped member 100 is sandwiched between the rollers 4 and 5. Is done.
Then, as described above, the inner roller 4 is directly attached to the second shaft 45, and the outer roller 5 is directly attached to the third shaft 46.
[0024]
FIG. 10 shows a detailed structure of the joining roller unit 30.
FIG. 10 is an enlarged view of the two rollers 4 and 5 on the inner surface and the outer surface of the joining roller unit 30, and shows the correspondence between the rollers 4 and 5 and the belt-shaped member 100. As illustrated, in the present embodiment, these rollers 4 and 5 are arranged over a plurality of (3 in the present embodiment) spans of the belt-shaped member 100. H indicates the first closed portion between the belt-shaped members 100.
[0025]
The inner roller 4 has a cylindrical shape, is in close contact with the inner surface of the belt member 100, and supports the belt member 100, including the closing portion H, which is pressed from the outside by the outer roller 5. An enlarged diameter portion 4a is formed at the front end of the inner roller 4, and a flange 4b that is engaged with the groove 110 on the inner surface of the belt-shaped member 100 is protruded from the enlarged diameter portion 4a. Can be omitted.
[0026]
The outer roller 5 has a plurality of annular flanges 64 formed on the cylindrical body 63 at predetermined intervals, and these annular flanges 64 fit into the grooves 104 between the ridges 102 of the belt-shaped member 100. The outer periphery of the cylindrical body 63 is pressed against the outer surface of the ridge 102 of the belt-shaped member 100. The outer surface of the cylindrical body 63 is knurled to prevent slippage with the band-shaped member 100. In addition, a portion 63a of the portion 63a has a small diameter and comes off the ridge 102.
The pair of two annular flange portions 64a corresponding to the closing portion H are attached to the annular flange portion 64, and the peripheral side portions of the pair of annular flange portions 64a contact the belt-shaped member 100. It is not necessary for the other annular flange portions 64 to abut particularly, and it is important that the other annular flange portions 64 fit into the grooves 104 between the ridges 102.
[0027]
When the joining mechanism 6 is attached to the lining pipe R, the outer portion 32A of the box 32 is opened, the annular flange 64 of the outer roller 4 is matched with the pitch of the ridge 102 of the belt-shaped member 100, and closed. The annular flange portion 64a is positioned at the portion H, and thereafter, the outer portion 32A is closed to the inner portion 32B, the closing device 37 is closed, and the nut 42 is tightened.
[0028]
(The driven feed mechanism section B and the driven feed roller 8) (FIGS. 1, 2, 11, and 12)
The driven feed roller 8 is a main component of the driven feed mechanism B, and has a reaction member 66 fixed to the front surface of the mounting frame 1, one end of which is fixed to the reaction member 66, and the other end of which is a holding frame for the driven feed roller 8. An extruding device 68 fixed to the extruder 67 and a guide member 69 of the extruding device 68 constitute a driven feed mechanism B.
A plurality of the driven feed rollers 8 are provided, each of which is inclined in accordance with a spiral pitch around which the belt-shaped member 100 is wound.
The pushing device 68 is a so-called pneumatic cylinder device, and includes a cylinder portion 68a and a piston rod portion 68b. The cylinder portion 68a is slidably held by a guide member 69 fixed to the mounting frame 1.
A brake device 70 is further added to the driven feed mechanism B.
Reference numeral 71 denotes a pneumatic tube, which is guided to an external pneumatic source via a rotary joint (not shown).
By the operation of the extrusion device 68, the driven feed roller 8 is pressed against the wall surface of the sewer, and holds the center of the vertical hole lining construction device S at the vertical hole H. When the brake device 70 is operated, the vertical hole lining construction device S is fixed to the vertical hole immovably.
[0029]
Lining in the vertical hole H
A method for lining the inside of the upright hole using the lining construction device S of the present embodiment will be described, and the operation of the construction device S will also be described.
FIG. 13 shows an outline of the lining work. In the method of the present embodiment, an example of application to a human hole H in a sewer pipe P will be described. The diameter of the human hole H expands downward near the opening, and the lower part thereof keeps the same diameter. In the figure, H1 is a downstream human hole, and H2 is an upstream human hole.
Construction of the lining of the sewer pipe P is performed from the upstream to the downstream. Q is the lining pipe, and the gap between the sewer pipe P and the lining pipe Q is filled with cement milk M.
The lining R is already applied to the upstream human hole H2, and the lining work is performed in the downstream human hole H1.
As shown in FIG. 13, the unwinding device T around which the belt-shaped member 100 is wound and the hydraulic drive source G are arranged side by side on the ground portion on the downstream human hole H1 side.
[0030]
Hereinafter, one embodiment of the construction method will be described in the order of steps.
(1) The gantry K is installed at the bottom of the human hole H1. The gantry K supports the weight of the lining construction apparatus S and the lining pipe, receives the reaction force of the lining pipe R to be manufactured, and is firmly installed in the human hole H.
In addition, this stand K does not prevent passage of the water flow of the sewer pipe P.
[0031]
(2) On the other hand, the lining construction device S is carried into the human hole H1 through the opening of the human hole H1 and installed on the gantry K. The molding frame 1 of the present construction apparatus S can be disassembled and assembled, and can be easily carried into the human hole H1. That is, although the opening of the human hole H is small, it can be easily carried in by removing the bolts and nuts of the back plate 16 of the inner link body 10B or by removing the drive bolt 26 of the circumference adjusting mechanism 2. You. After being carried in, the above-mentioned bolt / nut or drive bolt 26 is attached again, and the molding frame 1 is formed into an annular body. The interval is adjusted by the rotation of the drive bolt 26, and the circumferential length (diameter) of the forming frame 1 is adjusted. Furthermore, the joining mechanism 6 can be attached to the molding frame 1, and is attached on site.
At this time, the driven feed roller 8 is retracted by the pushing device 68 in the driven feed mechanism B.
[0032]
(3) The belt-shaped member 100 is pulled into the human hole H1, and the belt-shaped member 100 is manually wound several times (about three times) in the human hole H1 to form a lining pipe (referred to as a starting lining pipe) Ro. Make it. The starting lining tube Ro maintains a circular shape in a natural state in which no restraining force is applied due to the elasticity of the band-shaped member 100.
[0033]
(4) The forming frame 1 of the construction apparatus S is assembled inside the start lining pipe Ro, and the joining mechanism 6 of the lining construction apparatus S is set in a predetermined state at the upper edge of the start lining pipe Ro. . That is, the inner roller 4 and the outer roller 5 of the joining roller portion 30 are disposed at the closing portion of the lining pipe Ro, and the annular flange 64 of the outer roller 5 is fitted into the groove 104 of the belt-shaped member 100, The part 64a abuts on the closing part H exactly. The flange 4b of the inner roller 4 is engaged with the concave groove 110 of the belt-shaped member 100.
At the same time, the driving mechanism A is set to a predetermined interlocking state. In this state, the driven feed roller 7 of the driven feed mechanism B is extended and adjusted so as to abut on the wall surface of the human hole H1. Thereby, the lining construction apparatus S is held at the center of the human hole H1.
[0034]
(5) The joining mechanism 6 and the main feed mechanism A are driven.
In the joining mechanism 6, the inner and outer rollers 4 and 5 are driven to rotate, and a clamping force between the inner and outer rollers 4 and 5 is used to start the lining pipe Ro at the closing portion H of the belt-shaped member 100 by the joint structure. The belt-shaped member 100 newly supplied in succession to is joined. At the same time, the entire construction apparatus S rotates in the pipe circumferential direction of the human hole H1 by the engagement and guiding action between the annular flange 64 of the outer roller 5 and the groove 104 of the belt-shaped member 100.
At the same time, the driving mechanism A is also driven, and the belt-shaped member 100 is spirally wound, and the lining pipe R is formed while moving upward in the pipe axis direction of the human hole H1.
[0035]
(5A) In this step, the feed rollers 7 and 8 of the main and driven feed mechanisms A and B come into contact with the pipe wall of the human hole H1 and rotate in the direction in which the device S rotates, that is, in the forward direction. , To smoothly rotate the device S.
That is, the rotation of the hydraulic motor 33 drives the first shaft portion 44 to rotate, and drives the second shaft portion 45 to rotate via the gears 48 and 49. As a result, the driving sprocket 53 rotates integrally with the shaft portion 45, and the driving roller 7 is rotated via the chain 54 wound around the driving sprocket 53. The drive sprocket 53 and the main feed roller 7 rotate in the same direction, and thus in the same direction as the inner roller 4.
The main feed roller 7 comes into contact with the wall surface of the human hole H1, receives a reaction from the wall surface by the rotation thereof, applies a rotational force to the lining construction device S, and regulates the rotation speed of the lining construction device S.
At the same time, the driven feed roller 8 is also pressed against the wall surface of the human hole H1, and the feed roller 7, 8 holds the center of the apparatus S, and the peripheral surfaces of the feed rollers 7, 8 and the wall surface of the human hole H1 Overcoming the own weight of the present construction apparatus S, and prevents falling. Therefore, a self-elevating force can be obtained by adding a means for maintaining friction on the peripheral surfaces of the feed rollers 7 and 8.
[0036]
(5B) In this step, the belt-shaped member 100 is sequentially supplied from the unwinding device T disposed on the ground. That is, the band-shaped member 100 wound around the winding drum of the unwinding device T is sequentially fed out, and is supplied to the joining mechanism 6 in a spiral shape in the human hole H1.
The hydraulic pipeline from the hydraulic drive source G is inserted into the spiral of the belt-shaped member 100 and guided to the hydraulic motor 33.
[0037]
(6) The lining pipe R is manufactured to the predetermined height through the above steps, that is, to the vicinity of the opening of the human hole H1. Thereafter, the brake device 70 of the driven mechanism B is operated to apply a brake to the driven roller 8, and the lining construction device S is fixed. On the other hand, the lower end of the lining pipe R is fixedly held.
In this state, the joining mechanism 6 is further driven. By driving the joining roller portion 30 of the joining mechanism 6, the belt-shaped member 100 is fed into the lining tube R already formed in an amount equal to or greater than the rotation-producing tube amount, and overcomes the engaging force at the joint portion, and the lining tube is reduced by that amount. R increases its diameter. At this time, the driving roller 7 is in an idling state.
FIG. 1 shows this state. That is, the expansion of the band-shaped member 100 is regulated by the inner and outer rollers 4 and 5 in the vicinity of the joining mechanism 6, but in other cases, the diameter is increased by slipping at the joint portion until the band is restrained by the wall surface of the human hole H1. Expand.
[0038]
(7) Thereafter, the fixing of the joining mechanism 6 to the forming frame 1 is released, and the construction apparatus S is removed from the lining pipe R already manufactured. Then, the construction apparatus S can be divided as described in the step (2), and is carried out to the outside through the opening of the human hole H.
[0039]
(8) The joining mechanism 6 is driven to wind up the lining tube R while reducing the diameter thereof along the inclination of the opening of the human hole H1. The joining mechanism 6 is removed when the winding operation is completed.
[0040]
(9) When the lining pipe R is constructed in the manhole H1, the gap between the manhole H1 and the lining pipe R is filled with the cement milk M, and after the solidification thereof, the construction work of the present embodiment is completed. .
[0041]
In the above process, the work of expanding the lining pipe R was performed in (6), but the work of expanding the diameter can be performed simultaneously with the pipe making process of (5). Further, the diameter is generally increased until the lining pipe R comes into close contact with the wall surface of the human hole, but an appropriate diameter can be adopted.
[0042]
Further, a mode in which the forming frame 1 is removed as it is without expanding the diameter can be adopted. In this case, since the present construction apparatus S has the circumference adjustment mechanism 2, the removal work can be easily performed. That is, the drive bolt 26 of the circumference adjustment mechanism 2 is rotated to reduce the interval. Thereby, the diameter of the molding frame 1 is reduced as a whole, separated from the lining pipe R, and the construction apparatus S is removed.
[0043]
The present invention is not limited to only the above-described embodiments, and various design changes can be made within the scope of the basic technical concept of the present invention. That is, the following embodiments are included in the technical scope of the present invention.
{Circle around (1)} In the molded frame 1, the outer link body 10A and the inner link body 10B are not limited to the embodiment, and the outer link body 10A is formed of a U-shaped combination, and the inner link body 10B has an H shape. Alternatively, a U-shape or an H-shape can be adopted for both the outside and the inside. Further, two or more connecting plates 13 may be provided in the H-shaped link body.
{Circle around (2)} The joining mechanism 6 is not limited to the hydraulic drive, but may be a pneumatic motor or an electric motor. When a pneumatic motor is used, there is no change in the use of the rotary joint 60. However, when an electric motor is used, a rotary brush is used instead of the rotary joint.
Alternatively, the rollers 4 and 5 are driven by a handle operation via the gear mechanism 31 without excluding the manual mechanism.
[0044]
【The invention's effect】
ADVANTAGE OF THE INVENTION According to this invention, a lining pipe with high roundness can be manufactured smoothly in a standing hole.
Further, in the diameter reduction work near the opening of the upright hole, the removal of the molding frame is easily performed, the work can be performed only by the power of the joining mechanism, and great workability can be exhibited.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view showing an entire embodiment of a lining installation apparatus in a vertical hole according to the present invention.
FIG. 2 is a front view in which a part of the lining construction device is omitted.
FIG. 3 is a partial cross-sectional plan view of a molding frame.
FIG. 4 is a view showing a swing mechanism of a forming frame.
FIG. 5 is a side view of a mounting portion of the molding frame.
FIG. 6 is a partial cross-sectional plan view of a circumferential length adjusting mechanism disposed on a molding frame.
FIG. 7 is a sectional view taken along line VII-VII of FIG. 6;
FIG. 8 is a front view of the joining mechanism (view taken in the direction of arrow VIII in FIG. 9).
9 is a vertical sectional view at the center of the joining mechanism (a sectional view taken along line IX-IX in FIG. 8).
FIG. 10 is a configuration diagram of a joining roller unit of the joining mechanism unit.
FIG. 11 is a side view of a driven feed mechanism.
FIG. 12 is a front configuration diagram (a cross-sectional view taken along line XII-XII of FIG. 11) of a driven feed mechanism.
FIG. 13 is a view showing the outline of construction work.
FIG. 14A is a cross-sectional view showing one embodiment of a belt-shaped member used in the present invention.
(B) The figure is a cross-sectional view showing the joining relationship between the belt-like members.
FIG. 15 (a) is a sectional view showing another embodiment of the belt-shaped member used in the present invention.
(B) The figure is sectional drawing which shows the joining relationship of this belt-shaped member mutually.
[Explanation of symbols]
H: standing hole, R: lining pipe, S: lining application device, 1: molding frame, 2: peripheral length adjusting mechanism, 3: guide roller, 4: inner roller, 5: outer roller, 6: joining mechanism, 7 ... Driving feed roller, 8 ... Driving feed roller, 10 ... Link body, 100 ... Strip member

Claims

In the vertical hole, a long band-shaped member in which a joint is formed on both side edges and is continuously supplied is spirally wound, and a tubular body formed by engaging the mutually adjacent joints is left, A method of additionally forming a tubular body with a band-shaped member newly supplied above the already formed tubular body,
A plurality of guide rollers that hold the annular shape and are in contact with the inner surface of the band-shaped member are attached via a forming frame to which a plurality of guide rollers are attached, and are disposed at a closing portion between the already formed tubular body and the newly supplied band-shaped member. A tubular body for lining is produced with a pipe producing apparatus having a joining mechanism portion composed of an outer roller and an inner roller that sandwich the band-shaped member, and
The molding frame extends radially from the molding frame and holds a feed roller of a plurality of feed mechanisms pressed against and abutting against the wall surface of the standing hole to maintain a substantially concentric position with the standing hole in the pipe making process. Take a posture,
A method for lining a vertical hole, characterized in that:

The method for lining a vertical hole according to claim 1, wherein the peripheral length of the molding frame can be adjusted.

In the vertical hole, a long band-shaped member in which a joint is formed on both side edges and is continuously supplied is spirally wound, and a tubular body formed by engaging the mutually adjacent joints is left, A method of additionally forming a tubular body with a band-shaped member newly supplied above the already formed tubular body,
Attached via a molding frame that holds an annular shape, an outer roller and an inner roller that are arranged at a closed portion between the already formed tubular body and a newly supplied band member and sandwich the band member are provided. While producing a tubular body for lining with a pipe producing device having a joining mechanism section,
The molding frame has a feed roller extending from the molding frame and having a feed roller abutting against a wall surface of the vertical hole, and adopts a posture of maintaining a substantially concentric position with the vertical hole during pipe production,
Feeding the newly supplied belt-shaped member more than the moving amount of the joining mechanism, and expanding the diameter of the already formed tubular body by sliding the joint between the band-shaped members of the already formed tubular body,
A method for lining a vertical hole, characterized in that:

In the vertical hole, a long band-shaped member in which a joint is formed on both side edges and is continuously supplied is spirally wound, and a tubular body formed by engaging the mutually adjacent joints is left, A method of additionally forming a tubular body with a band-shaped member newly supplied above the already formed tubular body,
Attached via a molding frame that holds an annular shape, an outer roller and an inner roller that are arranged at a closed portion between the already formed tubular body and a newly supplied band member and sandwich the band member are provided. While producing a tubular body for lining with a pipe producing device having a joining mechanism section,
The molding frame has a feed roller extending from the molding frame and having a feed roller abutting against a wall surface of the vertical hole, and adopts a posture of maintaining a substantially concentric position with the vertical hole during pipe production,
When reaching the reduced diameter portion of the upright hole, remove the forming frame, make a tube only with the joining mechanism portion, and change the diameter of the tubular body according to the change in diameter of the upright hole,
A method for lining a vertical hole, characterized in that:

In the vertical hole, a long band-shaped member in which a joint is formed on both side edges and is continuously supplied is spirally wound, and a tubular body formed by engaging the mutually adjacent joints is left, A lining construction apparatus for additionally forming a tubular body with a band-shaped member newly supplied above the already formed tubular body,
A molded frame disposed inside the tubular body, which can maintain an annular shape and adjust the perimeter appropriately;
A plurality of guide rollers mounted at a predetermined pitch on the same circumference via the forming frame and abutting on the inner surface of the tubular body;
A joining mechanism portion which is attached via the forming frame, is disposed at a closed portion between the already formed tubular body and the newly supplied band member, and includes an outer roller and an inner roller which sandwich the band member. ;
A plurality of feed rollers mounted via the forming frame and abutting against the wall surface of the upright hole and rotating along the wall surface of the upright hole;
Having
At least one of the plurality of feed rollers is driven and driven,
A lining construction device for a vertical hole, characterized in that: