JP4177550B2

JP4177550B2 - Lining construction method and equipment for pipes

Info

Publication number: JP4177550B2
Application number: JP2000377828A
Authority: JP
Inventors: 栄器秋元; 浜夫山城
Original assignee: Sekisui Chemical Co Ltd
Current assignee: Sekisui Chemical Co Ltd
Priority date: 2000-12-12
Filing date: 2000-12-12
Publication date: 2008-11-05
Anticipated expiration: 2020-12-12
Also published as: JP2002181236A

Description

【０００１】
【発明の属する技術分野】
この発明は、下水道管、上水道管及びガス管等の既設の管渠において、その管渠の内面にライニング層を施工するための管渠内ライニング施工方法及びその装置に関し、更に詳しくは、長尺の板状体よりなる帯状部材を螺旋状に捲回して形成された管状体いわゆるライニング管を管渠内に挿入してなされるライニング施工を実施する管渠内ライニング施工方法及びその装置に関する。
【０００２】
【従来の技術】
管渠内において、自転動をもって自己推進する製管装置を用いて、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製管装置の成形フレーム周りに螺旋状に捲回し、相接する継手相互を係合させて管状体を形成するとともに該管状体を残置し、この既に形成された管状体の前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方法は、既に提案され、公知となっている。
すなわち、特開平８−２６１３６３号公報に開示された技術は、成形フレームを屈撓自在となし、円形断面の管渠に限定されず矩形断面の管渠にも適用され、かつ、弾性状のライニング管を管渠の断面に可及的に近づけて成形しうるものである。また、特開平９−５７８５０号公報に開示された技術は、円形断面の管渠に適用されるものであり、小径のライニング管を形成するとともに該ライニング管の径を拡径し、該円形管渠の断面一杯にライニング管を形成するものである。
しかしながら、前者（特開平８−２６１３６３号公報）にあっては、成形されるライニング管は密着状態を保持することは困難で多少なりとも縮径するものであり、断面損失は避けられない。また、後者（特開平９−５７８５０号公報）にあっては、確かに管渠の断面一杯にライニング管を形成することができるが、拡径操作をその都度する必要があり、もしくは連続操作によっても帯状部材の送り込み操作が容易でなく、作業の隘路となっている。
【０００３】
【発明が解決しようとする課題】
本発明は上記実情に鑑みなされたものであって、自転動をもって推進する製管装置を用いてライニング施工をなす前記先行技術を更に発展させ、容易な操作により管渠の断面一杯にライニング管を形成し、断面損失を生じさせない管渠内のライニング施工方法及びその施工装置を提供することを目的とする。
本発明はこのため、先の先行技術における屈撓自在の成形フレームに着目し、この成形フレームに特別の工夫を施すことによりこの目的を達成しうるとの知見によりなされたものである。
【０００４】
【課題を解決するための手段】
本発明の管渠内のライニング施工方法及びその施工装置は具体的には以下の構成を採る。
すなわち、第１番目の発明は管渠内のライニング施工方法に係り、請求項１に記載のとおり、実質的に円形断面をなす管渠内において、その外面の長手方向に凹溝を有するとともに両側縁部に継手が形成され連続的に供給される長尺の弾性を有する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前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、
横剛性を有し、リンク体の連なりよりなるリンク機構をもって径方向に屈撓自在とされるとともに各リンク体の中折れが規制された閉合状の成形フレーム；
前記成形フレーム回りに回転自在に装着され、帯状部材を螺旋状に捲回して形成されるライニング管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ライニング管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・接合する外面ローラと内面ローラとからなり、かつ該外面ローラは前記帯状部材の凹溝に嵌まり込む鍔部を有する接合機構部；
前記接合機構部に連動して配され、その外面が最外方へ突出し、帯状部材の螺旋捲回される方向へ送り駆動力を付与する送りローラ；を有し、
前記接合機構部の取り付けられる成形フレームのリンク体の中折れ規制は解除され、
前記成形フレームの回転をなすとともに、前記送りローラが常時管渠の壁面に当接され、前記接合機構部の取り付けられる成形フレームのリンク体を中折れ方向に押圧し、該成形フレーム回りに帯状部材を螺旋状に捲回してライニング管を形成する、
ことを特徴とする。
【０００５】
第２番目の発明は第１番目の発明を実施する施工装置であって、請求項２に記載のとおり、実質的に円形断面をなす管渠内において、その外面の長手方向に凹溝を有するとともに両側縁部に継手が形成され連続的に供給される長尺の弾性を有する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前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、
横剛性を有し、リンク体の連なりよりなるリンク機構をもって径方向に屈撓自在とされるとともに各リンク体の中折れが規制された閉合状の成形フレーム；
前記成形フレーム回りに回転自在に装着され、帯状部材を螺旋状に捲回して形成されるライニング管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ライニング管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・接合する外面ローラと内面ローラとからなり、かつ該外面ローラは前記帯状部材の凹溝に嵌まり込む鍔部を有する接合機構部；
前記接合機構部に連動して配され、その外面が最外方へ突出し、帯状部材の螺旋捲回される方向へ送り駆動力を付与する送りローラ；を有し、
前記接合機構部の取り付けられる成形フレームのリンク体の中折れ規制は解除され、前記送りローラが管渠の壁面に当接されて該成形フレームのリンク体が中折れ状態に折り込まれる、
ことを特徴とする。
上記構成において、
１. 成形フレームには該成形フレームの周長を自在に変更できる周長調製機構が配されること、
は適宜採択される選択的事項である。
【０００６】
本発明は更に、前記管渠内ライニング施工装置に関連して使用される保形用具を含み、成形フレームの内側に押圧固定され、管渠の形に相似して成形フレームの形を実質的に決めるとともに、成形フレームの接合機構部の取付け部のリンク体を中折れ状に引き込むことを特徴とする。
【０００７】
（作用）
施工に先立ち、成形フレーム回りに帯状部材を捲回した後、接合機構部の取付け部をそのリンクをもって内方へ折り込み、装置の全体を管渠の断面に対応させ、しかる後、管渠内に装入する。
施工装置を駆動させ、帯状部材の閉合部位で接合機構部の外面ローラ及び内面ローラの挟着作用により相接する継手相互は係合される。外面ローラは帯状部材の外面に形成された凹溝に係合することにより、新たに供給される帯状部材とともに所定のピッチで管軸方向に前進し、接合機構部は常に閉合部位に位置する。これにより、本ライニング施工装置は全体的に公転し、帯状部材は連続的に閉合されて製管される。
このとき、接合機構部に取り付けられる成形フレームのリンク体は、管壁に当接する当接ローラを介して中心方向への押圧力を受け、中折れ状態となる。成形フレーム回りに捲回されるライニング管は接合機構部の取付け部のリンク部のみ管壁から離れ、その余の部分は帯状部材の弾性をもって外方へ広がり管壁と密着状態を保つ。
ライニング管の形成の進行に伴い、接合機構部より後方のライニング管は漸次凹断面より凸断面に復帰し、全周にわたって管壁に密接する。
【０００８】
本発明の管渠内用ライニング施工装置及びその施工方法の実施の形態を図面に基づいて説明する。
図１〜図１６は本発明の管渠用ライニング施工装置の一実施形態を示す。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１６は本ライニング施工装置Ｓの各部の構成を示す。また、図２２は帯状部材の一態様を示す。
これらの図において、Ｐは円形断面をなす管渠、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。
【０００９】
帯状部材１００
図２２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。
【００１０】
ライニング施工装置Ｓ（図１〜図１６参照）
図１〜図１６を参照して、本実施形態の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リンク機構をもって屈撓自在の環状体をなす成形フレーム１と、この成形フレーム１に介装される周長調整機構２と、この周長調整機構２に併設される間隔保持機構３と、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４と、該成形フレーム１に取り付けられ、内面ローラ５と外面ローラ６とを含む接合機構部７との主要部からなる。なお、間隔保持機構３は省略できるものであり、場合によっては周長調整機構２も省略できる。
【００１１】
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、所要の幅をもって環状体をなし、全体がリンク機構をもって外径方向へは屈撓自在となっており、かつ横剛性を有し、その一部は接合機構部７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。
【００１２】
（リンク機構）（図３・図４参照）
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１６と背板１７とからなるコ字体をなし、背板１７相互を対接してボルト・ナット（図示せず）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１６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１８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１６を重ねるとともに、それらの軸孔１４，１８の軸心を一致させ、該軸孔１４，１８内に固定保持された軸受２０を介して軸部１１が挿通され、リンク機構を構成する。
【００１３】
（中折れ防止機構）（図５参照）
リンク体１０の相互は１８０°を基準に、外折れが可能とされるが、中折れは防止される。但し、後記するように取付け部はこれに該当しない。
このため、中折れ防止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２２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２３が固設されてなり、ストッパー２３がストッパー凹部２２の一方の端面２２ａに当接することにより中折れが阻止される。また、ストッパー２３はストッパー凹部２２の他方の端面２２ｂに当接するまで外折れが可能である。凹部２２の開き角度（α、例えば３０°）が揺動幅となる。すなわち、その一態様として１８０°を限度に１５０°まで外折れ可能となる。
【００１４】
（取付け部）（図６・図７参照）
成形フレーム１は取付け部を有し、該取付け部を介して接合機構部７が取り付けられる。
取付け部も成形フレーム１の一部を構成し、リンク体を構成する。すなわち、取付け部は図６・図７に示すように、内面ローラ５を抱持し、該内面ローラ５の軸部をもって揺動する２つの分割体２５，２６からなり、外側の分割体２６は接合機構部７との取付けに供される。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。
【００１５】
しかして、該取付け部においては、中折れ防止機構とは逆の態様の、外折れが防止され、一定の角度の中折れが許容される中折れ機構が設けられる。
すなわち、図７に示されるように、分割体２６の側板の端部には回転軸周りに凹部２７が形成され、分割体２５の側板には凹部２７内に嵌まり込むストッパー２８が固設され、該ストッパー２８は凹部２７の端面２７ａ，２７ｂに当接して凹部２７の広がり角度β（例えば６０°）の範囲にわたって中折れを許容する。図例ではストッパー２８は凹部２７の端面２７ａに当接して１８０°を保持し、これより２４０°まで内折れが可能となる。勿論、この中折れ角度は成形フレーム１の周長に応じて適宜に決められる。中折れ角度は、１８０°の直線状態を対称軸（ｙ）として管渠Ｐの内壁面の円弧形と対称となる円弧の角度を採る（図２０参照）。
【００１６】
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て増減される。
【００１７】
周長調整機構２（図２、図８〜図１０参照）
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１の周長を調整する。
図８〜図１０に示されるように、本周長調整機構２は、本実施形態では内側リンク体１０Ｂに装着され、更に具体的には当該分割体１０ｂの背板１７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１７に固設されたナット体３０と、このナット体３０間に螺装され回動部３２を有する調整ボルト３１とからなる。
【００１８】
以下、更に詳しくその構成を述べる。
分割体１０ｂの背板１７には、本機構２の取付け位置に対応して下方に張出し部１７ａが延設され、この張出し部１７ａを利用して調整ボルト３１の遊挿されるボルト挿通孔３４が開設される。なお、背板１７の高さが十分であれば、張出し部１７ａは必要でないことは勿論である。ナット体３０は、その内部に貫通状にねじ孔３５を有する円筒体をなし、このボルト挿通孔３４に臨んで背板１７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３０のねじ孔３５ａ，３５ｂのねじは互いに逆に切られている。
調整ボルト３１は、十分な強度を持ち、中央の回動部３２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３１ａ，３１ｂを有し、それらのねじ部３１ａ，３１ｂを対応するナット体３０のねじ孔３５ａ，３５ｂに螺合される。回動部３２は調整ボルト３１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３１の回動により、そのねじ部３１ａ，３１ｂに螺合された相対向するナット体３０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１５間の距離γを自在に調整する。
【００１９】
間隔保持機構３（図１１〜図１３参照）
間隔保持機構３は周長調整機構２に併設され、本実施形態では内側リンク体１０Ｂの両端部に同一構成をもって配される。
すなわち、図１１〜図１３に示されるように、本間隔保持機構３は、分割体１０ｂの相対向する背板１５に固設されるテーパー板４０と、これらの両テーパー板に挟着される内方及び外方間隔保持体４１，４２と、これらの間隔保持体４１，４２間に装着されるボルト４３とからなり、更には外方間隔保持体４２間に架け渡される連結板４４を含む。
（テーパー板４０）
テーパー板４０は一定幅をなし、中央部より内方及び外方へ向けて厚さの低減するテーパー面４０ａが形成される。該テーパー板４０の幅方向の両端部あるいは一端部にはガイド壁４０ｂが形成されるが、該ガイド壁４０ｂは適宜省略可能である。２つのテーパー板４０は相対向して、分割体１０ｂの背板１７に溶接あるいはビスをもって固定される。
（内方・外方間隔保持体４１，４２）
内方間隔保持体４１は一定幅をなし、厚さにおいて内方から外方へ向けて、テーパー板４０のテーパー面４０ａに合致するテーパー面４１ａが形成される。該内方間隔保持体４１の中央にはボルト４３のボルト杆を受け入れるボルト挿通孔４６が貫通状に開設される。
外方間隔保持体４２は、幅及び厚さにおいて内方間隔保持体４１と構成を同じくし、その中央にはボルト４３のボルト杆のねじ部と螺合するねじ孔４７が開設される。
（ボルト４３）
ボルト４３は、ボルト頭部４３ａとボルト杆部４３ｂとからなり、ボルト杆部４３ｂにはねじ部４３ｃが形成される。該ボルト４３は、ボルト杆部４３ｂが内方間隔保持体４１のボルト挿通孔４６に遊挿され、ねじ部４３ｃが外方間隔保持体４２のねじ孔４７に螺合する。
（連結板４４）
連結板４４は、細長の平板体からなり、両側に配される外方間隔保持体４２を繋ぐべく、その上面に固設される。該連結板４４にはボルト挿通孔４８が開設され、外方間隔保持体４２の進退動に伴うボルト４３の抜差しを許容する。
【００２０】
図１１〜図１３において、図１１・図１２は、周長調整機構２が収縮されて、内側リンク体１０Ｂの相互が狭まった状態（間隔ａ）における間隔保持機構３の状態を示す。図１３は、周長調整機構２が伸長されて、内側リンク体１０Ｂの相互が広まった状態（間隔ｂ）における間隔保持機構３の状態を示す。
【００２１】
案内ローラ４（図１〜図４、図６〜図９参照）
案内ローラ４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４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４（４ａ）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７の所要数（通常は１）の前方部の案内ローラ４（４ｂ）は帯状部材１００の幅だけ短くされる（図６・図７参照）。
【００２２】
接合機構部７（図１・図２、図６、図１４〜図１６参照）
接合機構部７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７は、内面ローラ５と外面ローラ６とが組となった接合ローラ部５０を主体とし、かつ、これらのローラ５，６の同期回転を図る歯車機構５１を収めるとともに、該歯車機構５１に連動する送り機構５２を保持する箱体５３、及び該箱体５３に取り付けられローラ５，６の回転駆動源としての油圧モータ５４を含む。そして、該接合機構部７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。
【００２３】
（箱体５３）
箱体５３は、図１４・図１５に示されるように、上部分５３Ａと下部分５３Ｂとに分かれ、上部分５３Ａはピン軸５６回りに開放可能とされ、閉合装置５７をもって上部分５３Ａを下部分５３Ｂへ閉合する。
箱体５３は上下部分５３Ａ，５３Ｂにわたってその前後面により歯車機構５１の軸部の保持をなす。また、箱体５３の下部分５３Ｂにおいて、前面部は油圧モータ５４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５３の他の側面には上部分５３Ａを下部分５３Ｂへ閉合する閉合装置５８が取り付けられる。図示するものはその一例であって、上部分５３Ａから突設されたリブ５８に連結棒５９が枢着され、また、下部分５３Ｂにはリブ５８と同位相で二又状の受棚６０が突設され、連結棒５９はこの受棚６０の凹部に入り込む。連結棒５９にはコイルばね６１及びその下部のねじ部に螺合するナット６２が順次装着され、ナット６２の締込みをもってコイルばね６１を受棚６０の下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６１の弾性により上部分５２Ａの締付け力が適宜に調整される。
【００２４】
（歯車機構５１）
歯車機構５１は、図１５に示されるように、箱体５３の前後壁にわたって下方より順次、回転自在に架け渡された３つの軸部６４，６５，６６を有し、各軸部５９，６０，６１に歯車６７，６８，６９が固設される。そして、第２の軸部６５には内面ローラ５が連結され、第３の軸部６６には外面ローラ６が連結される。図示されるように、第１の軸部６４の回転に対して第２軸部６５は逆方向に、第３軸部６６は順方向に回転し、ひいては内面ローラ５と外面ローラ６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６５，６６の回転数、ひいてはローラ５，６の回転数を調整することができる。更に、第３の軸部６６に間隔保持用のスペーサローラ７０が回転自在に取り付けられる。
本実施形態では３つの軸部６４，６５，６６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６６に間隔保持用のスペーサローラ７０が回転自在に取り付けられる。該スペーサローラ７０は後記する送りローラ７３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７０は適宜省略されうる。
【００２５】
（送り機構５２）
送り機構５２は、箱体５３の外部において第２の軸部６０に固設される駆動スプロケット７２、第３の軸部６１に回転自在に装着されるスプロケット付き送りローラ７３（７３ａはその送りローラ部、７３ｂはそのスプロケット部）及びチェーン７４からなる。もっと詳しくは、駆動スプロケット７２は、その外周に歯車歯７２ａ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６５に固定され、該軸部６５と一体に回転する。
スプロケット付き送りローラ７３は、小径部のスプロケット部７３ｂと大径部の送りローラ部７３ａとからなり、軸受を介して第３の軸部６６に回転自在に装着される。スプロケット部７３ｂはその外周に歯車歯を有する。送りローラ部７３ａ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６９は、駆動スプロケット７２とスプロケット付き送りローラ７３のスプロケット部７３ｂとに巻き掛けられ、駆動スプロケット７２の駆動力をスプロケット付き送りローラ７３に伝達する。
しかして、送りローラ７３の回転は管渠Ｐの管壁に当接し、その回転をもって本装置Ｓの回転速度を決めるが、その速度は後述する接合ローラ部５０により製管されるライニング管Ｒの成形速度に同期する。
【００２６】
本装置Ｓにおいて、この送り機構５２の送りローラ７３を含む差し渡し寸法が最大径をなす。
【００２７】
本送り機構５２とスペーサローラ７０との関係に付いては、本実施の形態においては両者は併設されたものであるが、どちらか一方を省略してもよく、更には、送りローラ７３の駆動系を省いて該送りローラ７３にスペーサローラの機能を持たせることもできる。
【００２８】
（油圧モータ５４）
油圧モータ５４は、その駆動軸５４ａを第１の軸部５９に連結して箱体６４の前面に取り付けられる。
該油圧モータ５４には、該油圧モータ５４に油を送るイン側配管７６ａと、該油圧モータ５４から油を排出するアウト側配管７６ｂとが接続される。更に、これらの配管７６は、箱体５３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７７（図１参照）に接続され、該回転継手７７には外部の圧力源に連なる配管７８が接続される。
この回転継手７７を介することにより、回転動作を伴う油圧モータ５４側の配管７６と、回転動作のない外部側配管７８との間の作動流体の授受をなす。
この歯車機構５１・油圧モータ５４により、油圧モータ５４の駆動力は第１の軸部６４に伝達され、かつ、歯車機構５１を介して第２・第３の軸部６５，６６
に伝達される。第２軸部６５と第３軸部６６とは互いに逆回転となる。
【００２９】
（接合ローラ部５０）
接合ローラ部５０は、図１６に示すように、内面ローラ５と外面ローラ６とが互いに管軸方向に相並んで、かつ、両ローラ５，６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５は第２の軸部６５に直結的に取り付けられ、外面ローラ６は第３の軸部６６に直結的に取り付けられる。
【００３０】
図１６は接合ローラ部５０の詳細構造を示す。
図１６は接合ローラ部５０の内面及び外面の２つのローラ５，６を拡大して示すとともに、これらのローラ５，６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５，６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。
【００３１】
内面ローラ５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６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５の前端部には拡径部５ａが形成され、かつ該拡径部５ａに帯状部材１００の内面の溝１１０に係合する鍔５ｂが突設されるものであるが、適宜省略されうる。
【００３２】
外面ローラ６は円筒本体６ａに所定間隔をもって複数の輪状鍔部６ｂが形成されてなり、これらの輪状鍔部６ｂ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６ａ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６ａ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６ａ’は小径にされ、突条１０２から外れる。
輪状鍔部６ｂに付き、閉合部Ｈに対応する２個一対の輪状鍔部６ｂ’はその周側部が帯状部材１００に当接する。他の輪状鍔部６ｂ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。
【００３３】
この接合機構部７のライニング管Ｒへの取付けは、箱体５３の上部分５３Ａを開放し、外面ローラ６の輪状鍔部６ｂ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６ｂ’を位置させ、しかる後、上部分５３Ａを下部分５３Ｂに閉合し、閉合装置５７を閉鎖し、そのナット６２を締め込んでなす。
【００３４】
叙上のライニング施工装置Ｓは以下のように管渠内のライニング施工に適用され、操作される。
図１７〜図２０はその一態様のライニング施工工事の概要を示す。この施工工事では地下埋設管渠として円形断面をなす下水道管渠Ｐへの適用例を示す。図において、Ｑ１は上流側人孔、Ｑ２は下流側人孔である。
図１７に示されるように、地上部においては、上流側人孔Ｑ１側では帯状部材１００を巻き付けた回転台付き巻出し装置Ｔが配され、下流側人孔Ｑ２側では油圧駆動源Ｇが配される。工事は上流側から下流側に沿ってなされる。
【００３５】
本ライニング施工装置Ｓの管渠Ｐ内への搬入
本ライニング施工装置Ｓを人孔Ｑ１を介して更生の対象となる管渠Ｐ内に搬入する。本施工装置Ｓの成形フレーム１は組立て可能となっており、人孔Ｑ１内への搬入は容易である。すなわち、人孔Ｑの開口部は小さいが、１つの内側リンク体１０Ｂの背板１７相互のボルト・ナットを取り外すか、あるいは１つの周長調整機構２の調整ボルト３１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、人孔Ｑ内において、再びボルト・ナットあるいは調整ボルト３１を取り付け、成形フレーム１を環状体となす。更に、接合機構部７はこの成形フレーム１に取付け可能となっており、現場での取付けも容易である。
【００３６】
成形フレーム１の周長の調整
本施工装置Ｓにおける成形フレーム１の周長を調整する。すなわち、該成形フレーム１の周長調整機構２の調整ボルト３１を回動し、その間隔γを調整する。普通には、調整ボルト３１を中立状態に位置させる。これにより、成形されるライニング管Ｒの周長を規定する。また、間隔保持機構３の内方及び外方間隔保持体４１，４２は互いに可及的離れた状態とされる。
周長調整機構２の調整が終了すれば、間隔保持機構３におけるボルト４３を回動し、内方及び外方間隔保持体４１，４２を互いに引き寄せ、テーパー板４０のテーパー面４０ａに当接させる。
【００３７】
ライニング施工
ライニング施工は以下の手順に基づいてなされる。
(1) 帯状部材１００を人孔Ｑ１内に引き込み、人孔Ｑ１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の内面の周長は本施工装置Ｓの周長に等しい。また、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。
【００３８】
(2) 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の前縁において、本ライニング施工装置Ｓの接合機構部７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５と外面ローラ６とをライニング管Ｒｏの閉合部Ｈに配するものであり、外面ローラ６の輪状鍔部６ａを帯状部材１００の溝１０４に嵌め込み、特に輪状鍔部６ｂを閉合部Ｈに正確に当接する。また、内面ローラ５の鍔５ｂを帯状部材１００の凹溝１１０に係合させる。
なお、この状態においては、本施工装置Ｓは非拘束状態、換言すれば自然状態を採り、送り機構５２の送りローラ７３を含む差し渡し寸法は最大寸法となり、管渠Ｐの径よりも大きいものである。なお言えば、開始用ライニング管Ｒｏの外径はこれから挿入される管渠Ｐの内径に可及的に近づけられる。
上記(1)(2)の工程において、本ライニング施工装置Ｓを人孔Ｑ内において組み立て、接合機構部７を駆動して帯状部材１００を送り込み、成形フレーム１回りに開始用ライニング管Ｒｏを形成する方法を採ってもよい。
【００３９】
(3) 人孔Ｑ内において、上記の状態の開始用ライニング管Ｒｏを組み付けた本施工装置Ｓに付き、接合機構部７を取り付けた成形フレーム１の取付け部をそのリンクを介して中折れ状態とし、接合機構部７を開始用ライニング管Ｒｏとともに半径方向に引き込む。このとき、該接合機構部７の送りローラ７３の外端を自然状態での開始用ライニング管Ｒｏの円周上に置く、もしくは円周上よりわずかに外方へ突出するようになす。
このようにして、管渠Ｐ内に挿入する前段階としてのライニング管（これを初期ライニング管という）Ｒｉを形成する。
この取付け部の引込み操作において、保形用具を使用すると便利である。
【００４０】
図１８はこの保形用具Ｋの一例を示す。
この保形用具Ｋは、実質的に１８０°を超える円弧板（押し当て板）８０と、該円弧板８０の両端部の内側に固設される端部ねじ孔部材８１と、これらのねじ孔部材８１間に中央ねじ孔部材８２を介して介装される２つの固定用ねじ棒８３と、前記中央ねじ孔部材８２のねじ孔に螺合される引込み用ねじ棒８４と、からなる。もっと詳しくは、円弧板８０は円弧状をなす鋼製板よりなり、若干の弾性を有し、その外側面は成形フレーム１の内周面に当接する。端部ねじ孔部材８１にはねじ孔８１ａが螺設され、固定用ねじ棒８３の一方のねじ８３ａを受け入れる。中央ねじ孔部材８２には固定用ねじ棒８３の他方のねじ８３ｂを受け入れるねじ孔８２ａが螺設され、またその中央には引込み用ねじ棒８４のねじ８４ａが螺合されるねじ孔８２ｂが螺設される。固定用ねじ棒８３のねじ８３ａと８３ｂとは逆ねじとなっている。引込み用ねじ棒８４の他端は成形フレーム１あるいは接合機構部７への取付け部８４ｂとなっている。
引込み用ねじ棒８４と接合機構部７との取付けは、図１８(b) にその一態様が示されるように、引込み用ねじ棒８４の取付け部８４ｂは円板状をなし、接合機構部７の箱体５３の裏面から突設された反力受け部材８６に回転自在に係合するものである。
この保形用具Ｋの使用に付いては、この保形用具Ｋを成形フレーム１の内側に所定状態に配し、先ず、固定用ねじ棒８３を回動させて円弧板８０の径を拡張させ、成形フレーム１の内周に押し付けて固定する。また、接合機構部７に取付け部８４ｂをもって回転自在に係合する引込み用ねじ棒８４を回動し、接合機構部７を径方向に引き込み、成形フレーム１の取付け部のリンク部を中折れ状態とする。
なお、保形用具Ｋは同等の機能を有するものであれば、上記の態様に限定されない。
【００４１】
(4) この状態の本施工装置Ｓを管渠Ｐ内に引き入れ、管渠Ｐの適宜位置（通常は管渠の入り口端部）に仮固定する。
この引き入れに際し、初期ライニング管Ｒｉを含め、本施工装置Ｓの全ては管渠Ｐの内径に収まる状態となっているので、その引入れ操作に格別の困難はない。
しかる後、保形用具Ｋを取り外す。
【００４２】
(5) 本施工装置Ｓを駆動する。
すなわち、送り機構３２の送りローラ７３は管渠Ｐの管壁に当接し、管壁からの反作用を受けて本施工装置Ｓを回転駆動させる。また、接合機構部７の内外面ローラ５，６を回転駆動し、内面ローラ５と外面ローラ６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初期ライニング管Ｒｉに連なって新たに供給される帯状部材１００は接合される。そして、本施工装置Ｓの全体は管周方向に公転し、かつ管軸方向に前進する。
これにより帯状部材１００は螺旋状に捲回され、ライニング管Ｒが製管される。
この工程において、成形クレーム１の回転に伴い、周長調整機構２に加わる力は、間隔保持機構３によって受けられ、当該周長調整機構２に過大な応力は生じない。
【００４３】
(5A)この工程において、本施工装置Ｓの後方に残置されたランニング管Ｒはその弾性により円形状に復帰する。
すなわち、図２０に示されるように、接合機構部７に把持されるライニング管Ｒの部位においては、送りローラ７３・接合機構部７を介して中心方向への押圧力を受け、凹曲面（Ａ）となっているが、接合機構部７より奥行き（軸）方向に遠ざかるにつれ、ライニング管Ｒの弾性により漸次凸曲面（Ｂ）となる。この場合、凸曲面（Ｂ）は管渠Ｐの壁面に密着するか、あるいは該壁面に可及的近傍に近接するものであり、望ましい態様からすれば、外ローラ６の内接点から管渠Ｐの内壁面（送りローラ７３の接点）までの距離ｘの１／２を通る線ｙを対称軸として対称形を採る。
【００４４】
(5B)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。該巻出し装置Ｔは、図１７にその構成の一例を示すように、人孔Ｑ１の開口部周りに配された円形軌状２００上に転子２０２を介して回転台２０４が回転自在に配備され、この回転台２０４に帯状部材１００を繰出し自在に巻き付けた巻胴２０６が回転自在に支持されてなる。これにより、円形軌条２００に沿う回転台２０４の水平面での回転と巻胴２０６の鉛直面での回転とが合成される。
製管動作に伴い帯状部材１００はねじれ回転をなすが、巻出し装置Ｔにおいてはこの回転に同期して回転台２０４をもってこれに追従する。
【００４５】
(6) 管渠Ｐの所定長（通常には人孔Ｑ１からＱ２までの全長区間）にわたってライニング管Ｒが施工されると、本施工装置Ｓが取り外される。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。先ず、間隔保持機構３において、そのボルト４３を回動し、内方及び外方間隔保持体４１，４２を互いに引き離し方向に移動させ、定着を解除する。しかる後、周長調整機構２の調整ボルト３１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。
本施工装置Ｓはまた、既に述べたように分割することができ、人孔Ｑを介して外部への搬出も容易である。
以上をもって、本実施形態の施工工事は完了する。
【００４６】
以上のように、この実施の形態のライニング施工によると、ライニング管の成形の進行とともに管渠の断面一杯にライニング管を形成することができるものであり、断面損失を生じることなく、経済的な施工を達成しえる。
【００４７】
叙上の施工方法では、円形断面の管渠への適用を示したが、卵形断面、馬蹄形断面の管渠への適用は上記に準じて施工されることは容易に推測できるところである。
【００４８】
矩形断面の管渠に付いても本ライニング施工方法は適用される（図２１参照）。
施工装置Ｓに付いては実質的な変更はない。保形用具Ｋに付いても、成形フレーム１に当接する円弧板８０部分が矩形管渠の下半に相似するように変更される以外は実質的に変更はない。
施工に当たっては、管渠への装入に先立って、成形フレーム１回りに帯状部材１００を巻き付け、保形用具を装着して所定の形状の初期ライニング管Ｒｉを得る。しかる後、この初期ライニング管Ｒｉを管渠内へ引き入れ、前述に準じて施工を行う。
接合機構部７が角部に至るとき、成形フレーム１の取付け部のリンクは形状に沿って角部の変化に追従する。
【００４９】
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)接合機構部７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７７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５，６を駆動する。
【００５０】
【発明の効果】
本発明によれば、通常の屈撓性を有する成形フレームを使用することにより、特別な拡径操作を伴うことなく、容易な操作をもって、管渠の断面一杯にライニング管を形成することができるものであり、断面損失を生じることなく、経済的な施工を達成しえる。
【図面の簡単な説明】
【図１】本発明の管渠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】ライニング施工装置を構成する成形フレームの一部断面平面図（図４の３方向矢視図）。
【図４】成形フレームの一部断面側面図（図３の４方向矢視図）。
【図５】成形フレームの中折れ防止機構を示す図。
【図６】成形フレームの取付け部の側面図。
【図７】成形フレームの取付け部の平面図（図６の７方向矢視図）。
【図８】成形フレームに配された周長調整機構及び間隔保持機構の一部断面平面図。
【図９】図８の９−９線断面図。
【図１０】図８の１０−１０線断面図。
【図１１】間隔保持機構の拡大断面図。
【図１２】図１１の１２−１２線断面図。
【図１３】間隔保持機構の動作図。
【図１４】接合機構部の正面図。
【図１５】接合機構部の縦断面図。
【図１６】接合機構部の接合ローラの構成図。
【図１７】ライニング施工工事の全体を示す概要図。
【図１８】保形用具（円形断面用）の一実施態様を示す図。
【図１９】ライニング施工工事の要領図。
【図２０】接合機構部回りのライニング管の状態を示す図。
【図２１】施工工事の他の要領図。
【図２２】帯状部材の一態様図。
【符号の説明】
Ｐ…管渠、Ｒ…ライニング管、Ｓ…ライニング施工装置、Ｋ…保形用具、１…成形フレーム、２…周長調整機構、３…間隔保持機構、４…案内ローラ、５…内面ローラ、６…外面ローラ、７…接合機構部、１０…リンク体、７３…送りローラ、１００…帯状部材[0001]
BACKGROUND OF THE INVENTION
 The present invention relates to a pipe lining construction method and apparatus for constructing a lining layer on the inner surface of an existing pipe, such as a sewer pipe, a water pipe, and a gas pipe. The present invention relates to a tubular lining construction method and apparatus for performing a lining construction in which a tubular body formed by spirally winding a band-shaped member made of a plate-like body, so-called a lining pipe, is inserted into the tubular cage.
[0002]
[Prior art]
 In a pipe rod, using a pipe making device that self-propells by rotation, a long strip member that is continuously supplied with joints formed on both side edges is spirally wound around the forming frame of the pipe making device. A lining for rotating and engaging adjacent joints to form a tubular body, leaving the tubular body, and additionally forming a tubular body with a belt-like member supplied in front of the already formed tubular body Construction methods have already been proposed and are publicly known.
 That is, the technique disclosed in Japanese Patent Application Laid-Open No. 8-261363 makes the forming frame bendable and is not limited to a circular cross-section tube rod, and is also applied to a rectangular cross-section tube rod, and an elastic lining. The tube can be formed as close as possible to the cross section of the tube rod. The technique disclosed in Japanese Patent Laid-Open No. 9-57850 is applied to a circular cross-section pipe rod, and forms a small-diameter lining pipe and expands the diameter of the lining pipe. The lining pipe is formed over the full cross section of the ridge.
 However, in the former (Japanese Patent Laid-Open No. Hei 8-261363), it is difficult to maintain the close contact state of the molded lining pipe, and the diameter of the lining pipe is reduced to some extent, and a cross-sectional loss is inevitable. In the latter case (Japanese Patent Laid-Open No. 9-57850), it is possible to form a lining pipe with a full cross-section of the pipe rod, but it is necessary to perform the diameter expansion operation each time, or by continuous operation. However, the feeding operation of the belt-shaped member is not easy and is a bottleneck for work.
[0003]
[Problems to be solved by the invention]
 The present invention has been made in view of the above circumstances, and further develops the prior art in which lining construction is performed by using a pipe making apparatus that is propelled by self-rotation, and the lining pipe is filled to the full cross section of the pipe rod by an easy operation. An object of the present invention is to provide a lining construction method and a construction apparatus for a pipe lining that are formed and do not cause a cross-sectional loss.
 Therefore, the present invention has been made based on the knowledge that the object can be achieved by focusing on the flexible molding frame in the prior art and applying special measures to the molding frame.
[0004]
[Means for Solving the Problems]
 Specifically, the lining construction method and construction apparatus in the pipe rod of the present invention adopt the following configuration.
 That is, the first invention relates to a lining construction method in a pipe rod. As described in claim 1, the pipe rod having a substantially circular cross section has a concave groove in the longitudinal direction of the outer surface and both sides. A long band-shaped elastic member that is continuously formed and supplied with a joint at the edge is spirally wound to leave the tubular body formed by engaging the joints that are in contact with each other. A method of additionally forming a tubular body with a belt-like member newly supplied in front of the tubular body,
 Has lateral rigidity,With a link mechanism consisting of a series of link bodiesRadiallyA closed molded frame that is flexible and is controlled to bend in each link body;
 A plurality of guide rollers that are rotatably mounted around the forming frame and abut against the inner surface of a lining pipe formed by spirally winding a belt-like member;
 An outer surface roller and an inner surface roller that are attached via the molding frame and are arranged at a closed portion of the already formed lining pipe and a newly supplied belt-like member and sandwich and join the belt-like member, And the outer surface roller has a joining mechanism portion having a flange portion that fits into the groove of the belt-like member;
 A feed roller that is arranged in conjunction with the joining mechanism, the outer surface of which projects outwardly, and applies a feed driving force in the direction in which the belt-like member is spirally wound;
 The middle folding restriction of the link body of the molding frame to which the joining mechanism portion is attached is released,
 While rotating the molding frame,Feed rollerIs always in contact with the wall surface of the tubePress the link body of the molding frame to which the joining mechanism portion is attached in the direction of folding,A lining pipe is formed by spirally winding a belt-shaped member around the molding frame,
It is characterized by that.
[0005]
 The second invention is a construction apparatus for carrying out the first invention, and has a concave groove in the longitudinal direction of the outer surface thereof in the pipe rod having a substantially circular cross section as described in claim 2. In addition, a long elastic band-shaped member that is continuously supplied and formed with joints on both side edges is spirally wound to leave the tubular body formed by engaging the adjacent joints, A lining construction apparatus for additionally forming a tubular body with a belt-shaped member newly supplied in front of the already formed tubular body,
 Has lateral rigidity,With a link mechanism consisting of a series of link bodiesRadiallyA closed molded frame that is flexible and is controlled to bend in each link body;
 A plurality of guide rollers that are rotatably mounted around the forming frame and abut against the inner surface of a lining pipe formed by spirally winding a belt-like member;
 An outer surface roller and an inner surface roller that are attached via the molding frame and are arranged at a closed portion of the already formed lining pipe and a newly supplied belt-like member and sandwich and join the belt-like member, And the outer surface roller has a joining mechanism portion having a flange portion that fits into the groove of the belt-like member;
 A feed roller that is arranged in conjunction with the joining mechanism, the outer surface of which projects outwardly, and applies a feed driving force in the direction in which the belt-like member is spirally wound;
 The middle folding restriction of the link body of the molding frame to which the joining mechanism portion is attached is released,The feeding roller is brought into contact with the wall surface of the pipe rod, and the link body of the molding frame is folded into a folded state;
It is characterized by that.
 In the above configuration,
1. The molding frame is provided with a circumference adjusting mechanism that can freely change the circumference of the molding frame.
Is an optional matter that is adopted as appropriate.
[0006]
 The present invention further includes a shape-retaining tool used in connection with the tube lining construction apparatus, and is pressed and fixed to the inside of the molding frame, so that the shape of the molding frame is substantially similar to the shape of the tube basket. It is characterized in that the link body of the attachment portion of the joining mechanism portion of the molding frame is drawn in a bent shape.
[0007]
(Function)
 Prior to construction, after winding the belt-shaped member around the forming frame, the attachment part of the joining mechanism part is folded inward with the link so that the entire device corresponds to the cross section of the pipe, and then into the pipe Insert.
 The construction apparatus is driven, and the joints that are brought into contact with each other by the sandwiching action of the outer surface roller and the inner surface roller of the joining mechanism portion are engaged at the closed portion of the belt-shaped member. The outer surface roller engages with a concave groove formed on the outer surface of the belt-shaped member, so that the outer roller advances together with the newly supplied belt-shaped member at a predetermined pitch in the tube axis direction, and the joining mechanism portion is always located at the closing portion. Thereby, this lining construction apparatus revolves entirely, and a strip | belt-shaped member is closed continuously and pipe-made.
 At this time, the link body of the molding frame attached to the joining mechanism portion receives a pressing force in the central direction via the abutting roller that abuts against the tube wall, and is in a bent state. The lining pipe wound around the forming frame is separated from the pipe wall only in the link part of the attachment part of the joining mechanism part, and the other part spreads outward by the elasticity of the belt-like member and keeps in close contact with the pipe wall.
 As the formation of the lining pipe progresses, the lining pipe behind the joining mechanism gradually returns to the convex cross section from the concave cross section, and comes into close contact with the pipe wall over the entire circumference.
[0008]
 An embodiment of a pipe lining construction apparatus and its construction method according to the present invention will be described with reference to the drawings.
 1 to 16 show an embodiment of a pipe lining construction apparatus of the present invention. That is, FIG.1 and FIG.2 shows the outline of the whole lining construction apparatus S, and FIGS. 3-16 shows the structure of each part of this lining construction apparatus S. FIG. FIG. 22 shows one mode of the band-shaped member.
 In these drawings, P indicates a tube rod having a circular cross section, and R indicates a lining tube.
In addition, let the advancing direction (arrow a) of this apparatus S be a front part and a rear part.
[0009]
Strip member 100
 FIG. 22 shows an example of a belt-like member used in the lining construction of this embodiment.
 The band-shaped member 100 has a flat plate shape with a constant thickness, and an appropriate number (seven in the illustrated example) of protrusions 102 are continuously provided vertically in the longitudinal direction of the outer surface. A flange 102 a is formed at the tip of the protrusion 102. A groove 104 or a groove space is formed between the protrusions 102. The inner surface 106 is formed to be substantially smooth.
 On both sides of the belt-like member 100, joint portions 100A and 100B are formed that are overlapped with each other inside and outside. That is, in the front edge side joint portion 100A, the base portion of the protrusion 102A at the front end is expanded, the concave groove 110 is provided vertically from the inner surface side, and the overhang portion 112 is further provided continuously from the protrusion 102A. The rear edge side joint portion 100B is provided with an overhang portion 114 extending from the protrusion 102B at the rear end portion, and a protrusion 116 that engages with the groove 110 of the front edge side joint portion 100A is vertically disposed near the end portion of the overhang portion 114. Established.
 At the time of joining, the front edge portion and the rear edge portion of the adjacent belt-like members 100 overlap each other, and the outer surface roller and the inner surface roller of the joining roller portion described later by the rear edge side joint portion 100B overlap the front edge side joint portion 100A. In response, the ridge 116 is fitted into the groove 110, and the end of the protruding portion 112 is fitted into the flange 102a of the ridge 102B, and joined. In this case, the main engagement is made by the concave groove 110 and the convex stripe 116, and the overhanging portion 112 and the protrusion 102B make a secondary engagement. Therefore, in some cases, the secondary engagement can be omitted. .
 Furthermore, in this embodiment, the sealing material 118 is interposed in the contact part of the overhang | projection parts 112 and 114, and bondability is improved. Note that the sealing material 118 can be omitted if the fitting engagement at the joints 100A and 100B is sufficient.
 The belt-shaped member is made of a synthetic resin material, and in particular, from the viewpoint of moldability, a vinyl chloride (PVC) resin that can be continuously formed by extrusion is suitable. However, it does not prevent metal molding.
[0010]
Lining construction equipment S(Refer to FIGS. 1 to 16)
 With reference to FIGS. 1-16, the structure of the lining construction apparatus S of this embodiment is demonstrated.
 As shown in FIGS. 1 and 2, the lining construction apparatus S includes a molding frame 1 having a predetermined width and having a link mechanism constituted by a plurality of link bodies to form a bendable and flexible body, and the molding frame. 1, a peripheral length adjusting mechanism 2 interposed between the peripheral length adjusting mechanism 2, an interval holding mechanism 3 provided along with the peripheral length adjusting mechanism 2, and a plurality of guide rollers 4 disposed on each shaft portion of the link mechanism of the molding frame 1. , Which is attached to the forming frame 1 and comprises a main part of a joining mechanism portion 7 including an inner roller 5 and an outer roller 6. In addition, the space | interval holding | maintenance mechanism 3 can be abbreviate | omitted and the circumference adjustment mechanism 2 can also be abbreviate | omitted depending on the case.
[0011]
 Hereinafter, the detailed structure of each part will be described.
Molding frame 1(See Figs. 1-7)
 The forming frame 1 forms an annular body with a required width, and the whole is flexible with a link mechanism in the outer diameter direction, and has a lateral rigidity, a part of which is a mounting portion of the joining mechanism portion 7. It becomes. That is, the flexibility of the annular body is obtained from a link chain in which a plurality of link bodies 10 are connected via the shaft portion 11.
[0012]
(Link mechanism) (See Figs. 3 and 4)
 In this embodiment, as shown in FIGS. 3 and 4, the link body 10 takes two modes of an outer link body 10 A and an inner link body 10 B and is arranged alternately.
 The outer link body 10A has an H shape as a whole, and includes a side plate 12 parallel to each other and a connecting plate 13 that rigidly connects these at the center. 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 shape as the outer link body 10A as a whole. That is, the divided body 10b has a U-shaped body composed of a short side plate 16 and a back plate 17, and is firmly connected by bolts and nuts (not shown) in contact with the back plates 17 and integrally formed as an H-shaped body. Assembled. The short side plate 16 has a circular shaft hole 18 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 16 of the inner link body 10B on the inner side of the side plate 12 of the outer link body 10A, and match the axial centers of the shaft holes 14 and 18; The shaft portion 11 is inserted through a bearing 20 fixedly held in the shaft holes 14 and 18 to constitute a link mechanism.
[0013]
(Anti-breaking mechanism) (See Fig. 5)
 The link bodies 10 can be folded outward with respect to each other at 180 °, but the middle break is prevented. However, the mounting portion does not fall under this as will be described later.
 For this reason, an anti-breaking mechanism is provided, and an example is shown in FIG. That is, a stopper recess 22 is provided at the end of the side plate of one link body 10 (I), and the side plate of the other link body 10 (II) projects toward the previous link body 10 (I). The stopper 23 to be provided is fixed, and the stopper 23 abuts against one end surface 22a of the stopper recess 22 to prevent the middle break. Further, the stopper 23 can be folded outward until it comes into contact with the other end surface 22 b of the stopper recess 22. The opening angle (α, for example, 30 °) of the recess 22 is the swinging width. That is, as one aspect, it can be folded outwards up to 150 ° up to 180 °.
[0014]
(Mounting part) (See Figs. 6 and 7)
 The molding frame 1 has an attachment portion, and the joining mechanism portion 7 is attached through the attachment portion.
 An attaching part also comprises a part of molding frame 1, and constitutes a link body. That is, as shown in FIGS. 6 and 7, the mounting portion is composed of two divided bodies 25, 26 that hold the inner roller 5 and swing around the shaft portion of the inner roller 5. It is used for attachment to the joining mechanism section 7. The link body 10b 'in the rotation direction of the attachment portion is retracted rearward from its front side plate, and has a narrow width. The receding width is set to a width sufficient to receive the belt-like member 100.
[0015]
 Thus, the attachment portion is provided with an intermediate folding mechanism that is prevented from outward folding and allows intermediate folding at a certain angle, which is the reverse of the intermediate folding prevention mechanism.
 That is, as shown in FIG. 7, a concave portion 27 is formed around the rotation axis at the end of the side plate of the divided body 26, and a stopper 28 that fits into the concave portion 27 is fixed to the side plate of the divided body 25. The stopper 28 abuts against the end surfaces 27a and 27b of the recess 27 and allows the bend to bend over the range of the spread angle β (for example, 60 °) of the recess 27. In the illustrated example, the stopper 28 abuts against the end surface 27a of the concave portion 27 and maintains 180 °, so that it can be folded inward up to 240 °. Of course, this angle of folding is appropriately determined according to the circumference of the molding frame 1. The middle bending angle is an angle of a circular arc that is symmetric with the circular arc shape of the inner wall surface of the pipe rod P with the 180 ° linear state as the axis of symmetry (y) (see FIG. 20).
[0016]
 In the molding frame 1 of the present embodiment, it is composed of 17 link bodies, but this can be freely reduced or increased. In short, it is increased or decreased according to the diameter of the pipe to be constructed.
[0017]
Perimeter adjustment mechanism 2(See FIGS. 2 and 8 to 10)
 The peripheral length adjusting mechanism 2 is disposed at an appropriate position of the link mechanism of the forming frame 1 and adjusts the peripheral length of the forming frame 1.
 As shown in FIGS. 8 to 10, the perimeter adjustment mechanism 2 is attached to the inner link body 10 B in this embodiment, and more specifically, is attached between the back plates 17 of the divided body 10 b.
 Thus, the circumferential length adjusting mechanism 2 includes a nut body 30 fixed to the back plate 17 facing each other, and an adjusting bolt 31 screwed between the nut bodies 30 and having a rotating portion 32.
[0018]
 Hereinafter, the configuration will be described in more detail.
 In the back plate 17 of the divided body 10b, a projecting portion 17a extends downward corresponding to the mounting position of the mechanism 2, and a bolt insertion hole 34 into which the adjustment bolt 31 is loosely inserted using the projecting portion 17a. Established. Of course, if the height of the back plate 17 is sufficient, the overhanging portion 17a is not necessary. The nut body 30 is formed in a cylindrical body having a screw hole 35 penetrating therein, and is firmly fixed to the back plate 17 by welding so as to face the bolt insertion hole 34. The screws of the screw holes 35a and 35b of the nut body 30 to be paired are cut in the opposite directions.
 The adjustment bolt 31 has sufficient strength, and has screw portions 31a and 31b that are threaded in opposite directions toward both ends across the central rotation portion 32, and these screw portions 31a and 31b. Are screwed into the corresponding screw holes 35a, 35b of the nut body 30. The rotating part 32 is formed integrally with the adjusting bolt 31 and has an outer surface in the shape of a hexagonal nut. A rotating means such as a spanner is gripped and receives a rotating operation.
 Two circumferential length adjusting mechanisms 2 of the present embodiment are provided in the width direction in one inner link body 10B, but may be three or more, and the number is not limited. In addition, as shown in FIG. 2, it is arranged at four places on the forming frame 1, but the arrangement places are determined as appropriate and are not limited to the number.
 Thus, by the rotation of the adjustment bolt 31, the opposing nut bodies 30 screwed into the threaded portions 31a and 31b move in the direction in which they are attracted to or away from each other, thereby forming a pair of divided bodies 10b. The distance γ between the back plates 15 is freely adjusted.
[0019]
Spacing mechanism 3(See FIGS. 11 to 13)
 The interval holding mechanism 3 is provided side by side with the circumferential length adjusting mechanism 2, and is arranged with the same configuration at both ends of the inner link body 10 B in the present embodiment.
 That is, as shown in FIGS. 11 to 13, the gap holding mechanism 3 is sandwiched between the tapered plate 40 fixed to the opposing back plate 15 of the divided body 10 b and both the tapered plates. The inner and outer spacing holders 41 and 42 and the bolts 43 mounted between the spacing holders 41 and 42, and further includes a connecting plate 44 spanned between the outer spacing holders 42. .
(Taper plate 40)
 The tapered plate 40 has a constant width, and a tapered surface 40a is formed with a thickness decreasing from the center toward the inside and the outside. Guide walls 40b are formed at both ends or one end in the width direction of the taper plate 40, but the guide walls 40b can be omitted as appropriate. The two taper plates 40 face each other and are fixed to the back plate 17 of the divided body 10b by welding or screws.
(Inner / outer spacing holders 41, 42)
 The inner spacing holder 41 has a constant width, and a taper surface 41a that matches the taper surface 40a of the taper plate 40 is formed from the inside toward the outside in the thickness. A bolt insertion hole 46 for receiving a bolt rod of the bolt 43 is formed in the center of the inner spacing holder 41 in a penetrating manner.
 The outer spacing holder 42 has the same configuration as the inner spacing holder 41 in width and thickness, and a screw hole 47 is formed at the center thereof to be screwed with the threaded portion of the bolt rod of the bolt 43.
(Bolt 43)
 The bolt 43 includes a bolt head portion 43a and a bolt flange portion 43b, and a screw portion 43c is formed in the bolt flange portion 43b. In the bolt 43, the bolt flange 43 b is loosely inserted into the bolt insertion hole 46 of the inner space holding body 41, and the screw portion 43 c is screwed into the screw hole 47 of the outer space holding body 42.
(Connecting plate 44)
 The connecting plate 44 is formed of an elongated flat plate, and is fixed to the upper surface of the connecting plate 44 so as to connect the outer spacing holders 42 arranged on both sides. A bolt insertion hole 48 is formed in the connecting plate 44 to allow the bolt 43 to be inserted / removed as the outward spacing holder 42 moves forward / backward.
[0020]
 11 to 13, FIGS. 11 and 12 show the state of the interval holding mechanism 3 in a state (interval a) in which the circumference adjusting mechanism 2 is contracted and the inner link bodies 10 B are mutually narrowed. FIG. 13 shows a state of the interval holding mechanism 3 in a state (interval b) in which the circumferential length adjusting mechanism 2 is extended and the inner link bodies 10B are mutually spread.
[0021]
Guide roller 4(See FIGS. 1 to 4 and FIGS. 6 to 9)
 The guide roller 4 is rotatably mounted on each shaft portion 11 of the molding frame 1. In the present embodiment, the guide roller 4 is integrally attached to the shaft portion 11, but there is also an aspect in which the guide roller 4 is attached via a bearing. The roller body is made of a hard synthetic resin body or metal body, and abuts against the inner surface of the belt-like member 100. The standard guide roller 4 (4a) has a length that is full of the inner width of the link body 10, but the guide roller 4 (4b) in the front portion of the required number (usually 1) of the joining mechanism portion 7 to be described later is a belt-like member. The width is shortened by 100 (see FIGS. 6 and 7).
[0022]
Bonding mechanism 7(See FIGS. 1, 2, 6, and 14 to 16)
 The joining mechanism portion 7 is attached to the attachment portion of the molding frame 1.
 The joining mechanism portion 7 is mainly composed of a joining roller portion 50 in which an inner surface roller 5 and an outer surface roller 6 are combined, and houses a gear mechanism 51 for synchronously rotating these rollers 5 and 6. A box 53 holding a feed mechanism 52 interlocked with the mechanism 51, and a hydraulic motor 54 attached to the box 53 as a rotational drive source of the rollers 5 and 6 are included. And this joining mechanism part 7 is distribute | arranged corresponding to the joining part of the strip | belt-shaped member 100 wound spirally, ie, the position where the said strip-shaped member 100 closes initially.
[0023]
(Box 53)
 14 and 15, the box 53 is divided into an upper portion 53A and a lower portion 53B. The upper portion 53A can be opened around the pin shaft 56, and the upper portion 53A is lowered by the closing device 57. Close to part 53B.
 The box 53 holds the shaft portion of the gear mechanism 51 by the front and rear surfaces of the upper and lower portions 53A and 53B. Further, in the lower portion 53 B of the box body 53, the front surface portion is provided for the attachment portion of the hydraulic motor 54, and the rear surface portion is attached to the link body of the attachment portion of the molding frame 1.
 On the other side of the box 53, a closing device 58 for closing the upper portion 53A to the lower portion 53B is attached. An example is shown in the figure, and a connecting rod 59 is pivotally attached to a rib 58 projecting from an upper portion 53A, and a bifurcated receiving shelf 60 is in phase with the rib 58 on a lower portion 53B. The connecting rod 59 is protruded and enters the recess of the receiving shelf 60. The connecting rod 59 is sequentially fitted with a coil spring 61 and a nut 62 that is screwed into a threaded portion below the coil spring 61, and the coil spring 61 is pressed against the lower surface of the receiving shelf 60 by tightening the nut 62. Thereby, the tightening force of the upper portion 52 A is appropriately adjusted by the elasticity of the coil spring 61.
[0024]
(Gear mechanism 51)
 As shown in FIG. 15, the gear mechanism 51 has three shaft portions 64, 65, and 66 that are rotatably spanned sequentially from below to the front and rear walls of the box body 53. , 61 are fixedly provided with gears 67, 68, 69. The inner roller 5 is connected to the second shaft 65 and the outer roller 6 is connected to the third shaft 66. As shown in the figure, the second shaft portion 65 rotates in the opposite direction and the third shaft portion 66 rotates in the forward direction with respect to the rotation of the first shaft portion 64, so that the inner surface roller 5 and the outer surface roller 6 are mutually connected. Reverse rotation. It should be noted that by adjusting the number of teeth, the number of rotations of the shaft portions 65 and 66, and hence the number of rotations of the rollers 5 and 6 can be adjusted. Further, a spacer roller 70 for maintaining the interval is rotatably attached to the third shaft portion 66.
 In the present embodiment, the three shaft portions 64, 65 and 66 are supported and fixed by a rotary bearing, but a slide bearing can be used freely.
 Further, a spacer roller 70 for maintaining the interval is rotatably attached to the third shaft portion 66. The spacer roller 70 has substantially the same diameter (including a small diameter) as a feed roller 73 described later, and the outer periphery thereof abuts against the inner wall surface of the pipe rod P. The spacer roller 70 can be omitted as appropriate.
[0025]
(Feeding mechanism 52)
 The feed mechanism 52 includes a drive sprocket 72 fixed to the second shaft portion 60 outside the box body 53, and a sprocket-equipped feed roller 73 (73a is a feed roller) rotatably attached to the third shaft portion 61. Part 73b is a sprocket part) and a chain 74. More specifically, the drive sprocket 72 has gear teeth 72a on the outer periphery thereof, and is fixed to the second shaft portion 65 via a key or with spline engagement, and rotates integrally with the shaft portion 65.
 The feed roller 73 with sprocket includes a sprocket portion 73b having a small diameter portion and a feed roller portion 73a having a large diameter portion, and is rotatably mounted on the third shaft portion 66 through a bearing. The sprocket portion 73b has gear teeth on its outer periphery. The feed roller portion 73a is made of a steel material in the present embodiment, but a belt-like elastic ring (not shown) can be appropriately mounted on the outer periphery thereof.
 The chain 69 is wound around the drive sprocket 72 and the sprocket portion 73b of the feed roller 73 with sprocket, and transmits the driving force of the drive sprocket 72 to the feed roller 73 with sprocket.
 Thus, the rotation of the feed roller 73 comes into contact with the tube wall of the pipe rod P, and the rotation speed determines the rotation speed of the apparatus S. The rotation speed of the lining pipe R manufactured by the joining roller section 50 described later is determined. Synchronize with molding speed.
[0026]
 In the present apparatus S, the passing dimension including the feed roller 73 of the feed mechanism 52 is the maximum diameter.
[0027]
 As for the relationship between the main feeding mechanism 52 and the spacer roller 70, both of them are provided side by side in the present embodiment, but either one may be omitted, and further, the driving of the feeding roller 73. It is also possible to omit the system and give the feed roller 73 the function of a spacer roller.
[0028]
(Hydraulic motor 54)
 The hydraulic motor 54 is attached to the front surface of the box 64 by connecting the drive shaft 54 a to the first shaft portion 59.
 The hydraulic motor 54 is connected to an in-side pipe 76 a that sends oil to the hydraulic motor 54 and an out-side pipe 76 b that discharges oil from the hydraulic motor 54. Further, these pipes 76 are connected to a rotary joint 77 (see FIG. 1) attached to the box 53 or an appropriate position of the molding frame 1, and a pipe 78 connected to an external pressure source is connected to the rotary joint 77. The
 By passing through the rotary joint 77, the working fluid is exchanged between the piping 76 on the hydraulic motor 54 side that rotates and the external piping 78 that does not rotate.
 The driving force of the hydraulic motor 54 is transmitted to the first shaft portion 64 by the gear mechanism 51 and the hydraulic motor 54, and the second and third shaft portions 65 and 66 are transmitted via the gear mechanism 51.
Is transmitted to. The second shaft portion 65 and the third shaft portion 66 are rotated in the opposite directions.
[0029]
(Joining roller part 50)
 As shown in FIG. 16, the joining roller portion 50 is configured so that the inner roller 5 and the outer roller 6 are aligned with each other in the tube axis direction, and the belt-like member 100 is sandwiched between the rollers 5 and 6. Arranged at a predetermined interval.
 As described above, the inner roller 5 is directly attached to the second shaft portion 65, and the outer roller 6 is directly attached to the third shaft portion 66.
[0030]
 FIG. 16 shows a detailed structure of the joining roller unit 50.
 FIG. 16 shows the two rollers 5 and 6 on the inner and outer surfaces of the joining roller portion 50 in an enlarged manner, and shows the correspondence between these rollers 5 and 6 and the belt-like member 100. As shown in the drawing, in the present embodiment, these rollers 5 and 6 are arranged over a plurality of (three in the present embodiment) spans of the belt-like member 100. H indicates the first closing portion between the strip members 100.
[0031]
 The inner surface roller 5 has a cylindrical shape, is in close contact with the inner surface of the belt-like member 100, and supports the belt-like member 100 that is pressed from the outside by the outer roller 6 including the closing portion H. In addition, an enlarged diameter portion 5a is formed at the front end portion of the inner surface roller 5, and a flange 5b that engages with the groove 110 on the inner surface of the belt-like member 100 protrudes from the enlarged diameter portion 5a. It can be omitted.
[0032]
 The outer surface roller 6 is formed with a plurality of ring-shaped flange portions 6b at predetermined intervals on the cylindrical body 6a, and these ring-shaped flange portions 6b are fitted into the grooves 104 between the protrusions 102 of the belt-shaped member 100. Further, the outer periphery of the cylindrical main body 6 a is in pressure contact with the outer surface of the protrusion 102 of the belt-like member 100. The outer surface of the cylindrical body 6a is knurled to prevent slipping with the belt-like member 100. Further, the part 6 a ′ has a small diameter and is disengaged from the protrusion 102.
 The pair of two ring-shaped flange portions 6b 'that are attached to the ring-shaped flange portion 6b and correspond to the closing portion H are in contact with the belt-shaped member 100 at their peripheral side portions. It is not necessary for the other ring-shaped flange portion 6b to be in particular contact, and it is important that the other ring-shaped flange portion 6b is fitted into the groove 104 between the protrusions 102.
[0033]
 The attachment mechanism portion 7 is attached to the lining pipe R by opening the upper portion 53A of the box 53, matching the ring-shaped flange portion 6b of the outer roller 6 with the pitch of the ridges 102 of the belt-like member 100, and closing. The ring-shaped collar portion 6b ′ is positioned in the portion H, and then the upper portion 53A is closed to the lower portion 53B, the closing device 57 is closed, and the nut 62 is tightened.
[0034]
 The above lining construction apparatus S is applied and operated to the lining construction in the pipe as follows.
 17-20 shows the outline | summary of the lining construction of the one aspect | mode. In this construction work, an example of application to a sewer pipe P having a circular cross section as an underground pipe will be shown. In the figure, Q1 is an upstream human hole and Q2 is a downstream human hole.
 As shown in FIG. 17, in the ground portion, an unwinding device T with a turntable around which the belt-like member 100 is wound is arranged on the upstream side human hole Q1, and a hydraulic drive source G is arranged on the downstream side human hole Q2. Is done. Construction will be done from upstream to downstream.
[0035]
Carrying this lining construction device S into the pipe P
 The lining construction apparatus S is carried into the pipe rod P to be rehabilitated through the human hole Q1. The forming frame 1 of the construction apparatus S can be assembled and can be easily carried into the human hole Q1. That is, the opening portion of the human hole Q is small, but it is carried in by removing the bolts and nuts between the back plates 17 of one inner link body 10B or by removing the adjusting bolt 31 of one peripheral length adjusting mechanism 2. Is made easy. After carrying in, in the human hole Q, the bolt / nut or the adjusting bolt 31 is attached again, and the molding frame 1 is formed into an annular body. Furthermore, the joining mechanism part 7 can be attached to the molding frame 1 and can be easily attached on site.
[0036]
Adjustment of circumference of molding frame 1
 The circumference of the forming frame 1 in the construction apparatus S is adjusted. That is, the adjustment bolt 31 of the circumference adjusting mechanism 2 of the molding frame 1 is rotated to adjust the interval γ. Normally, the adjustment bolt 31 is positioned in a neutral state. Thereby, the circumference of the lining pipe R to be molded is defined. Further, the inner and outer interval holders 41 and 42 of the interval holding mechanism 3 are separated as much as possible.
 When the adjustment of the circumferential length adjusting mechanism 2 is completed, the bolt 43 in the spacing holding mechanism 3 is rotated, and the inner and outer spacing holding bodies 41 and 42 are pulled toward each other and brought into contact with the tapered surface 40a of the tapered plate 40. .
[0037]
Lining construction
 The lining construction is done based on the following procedure.
(1) The belt-like member 100 is drawn into the human hole Q1, the belt-like member 100 is manually wound several times (about three times) in the human hole Q1, and the lining pipe (this is called the starting lining pipe) Ro Make it. The circumference of the inner surface of the starting lining pipe Ro is equal to the circumference of the construction apparatus S. Further, the starting lining tube Ro maintains a circular shape in a natural state where no restraining force is applied due to the elasticity of the belt-like member 100.
[0038]
(2) The molding frame 1 of the present construction apparatus S is incorporated inside the starting lining pipe Ro, and the joining mechanism portion 7 of the lining construction apparatus S is installed in a predetermined state at the front edge of the starting lining pipe Ro. . That is, the inner surface roller 5 and the outer surface roller 6 of the joining roller portion 30 are arranged in the closing portion H of the lining pipe Ro, and the ring-shaped flange portion 6a of the outer surface roller 6 is fitted into the groove 104 of the belt-shaped member 100, and particularly the ring shape. The flange portion 6b is brought into contact with the closing portion H accurately. Further, the flange 5 b of the inner surface roller 5 is engaged with the concave groove 110 of the belt-like member 100.
 In this state, the construction apparatus S takes an unconstrained state, in other words, a natural state, and the passing dimension including the feeding roller 73 of the feeding mechanism 52 is the maximum dimension, which is larger than the diameter of the pipe rod P. is there. In other words, the outer diameter of the starting lining pipe Ro is made as close as possible to the inner diameter of the pipe rod P to be inserted.
 In the steps (1) and (2), the lining construction apparatus S is assembled in the human hole Q, the joining mechanism 7 is driven to feed the belt-like member 100, and the starting lining pipe Ro is formed around the forming frame 1. You may take the method to do.
[0039]
(3) Inside the human hole Q, the attachment part of the molding frame 1 to which the joining mechanism part 7 is attached is attached to the construction apparatus S in which the starting lining pipe Ro in the above state is assembled. Then, the joining mechanism portion 7 is drawn in the radial direction together with the starting lining pipe Ro. At this time, the outer end of the feed roller 73 of the joining mechanism portion 7 is placed on the circumference of the starting lining pipe Ro in a natural state, or slightly protrudes outward from the circumference.
 In this way, a lining pipe Ri (which is referred to as an initial lining pipe) Ri is formed as a stage before being inserted into the pipe rod P.
 It is convenient to use a shape-retaining tool in the pull-in operation of the mounting portion.
[0040]
 FIG. 18 shows an example of the shape retaining tool K.
 This shape-retaining tool K includes an arc plate (pressing plate) 80 substantially exceeding 180 °, end screw hole members 81 fixed inside both ends of the arc plate 80, and screw holes thereof. The fixing screw rod 83 is interposed between the members 81 via a central screw hole member 82, and the retractable screw rod 84 is screwed into the screw hole of the central screw hole member 82. More specifically, the arc plate 80 is made of a steel plate having an arc shape, has a slight elasticity, and an outer surface thereof abuts against an inner peripheral surface of the forming frame 1. The end screw hole member 81 is screwed with a screw hole 81 a and receives one screw 83 a of the fixing screw rod 83. A screw hole 82a for receiving the other screw 83b of the fixing screw rod 83 is screwed in the central screw hole member 82, and a screw hole 82b into which the screw 84a of the pulling screw rod 84 is screwed is screwed in the center. Established. The screws 83a and 83b of the fixing screw rod 83 are reverse screws. The other end of the lead-in screw rod 84 serves as an attachment portion 84 b to the molding frame 1 or the joining mechanism portion 7.
 As shown in FIG. 18B, the attachment portion 84b of the pull-in screw rod 84 has a disk shape, and the attachment mechanism portion 7 is attached to the pull-in screw rod 84 and the joint mechanism portion 7. This is engaged with a reaction force receiving member 86 projecting from the back surface of the box 53 in a rotatable manner.
 When using the shape retaining tool K, the shape retaining tool K is placed inside the molding frame 1 in a predetermined state, and first, the fixing screw rod 83 is rotated to expand the diameter of the arc plate 80. Then, it is pressed against the inner periphery of the molding frame 1 and fixed. Moreover, the screw rod 84 for retraction engaged with the joining mechanism part 7 with the attaching part 84b is rotated, the joining mechanism part 7 is drawn in the radial direction, and the link part of the attaching part of the molding frame 1 is in a folded state. And
 In addition, if the shape retention tool K has an equivalent function, it will not be limited to said aspect.
[0041]
(4) The construction apparatus S in this state is drawn into the pipe rod P and temporarily fixed at an appropriate position of the pipe rod P (usually at the entrance end of the tube rod).
 At the time of this pulling-in, all of the construction apparatus S, including the initial lining pipe Ri, is in a state of being accommodated within the inner diameter of the pipe rod P, so that there is no particular difficulty in the pulling operation.
 Thereafter, the shape-retaining tool K is removed.
[0042]
(5) The construction apparatus S is driven.
 That is, the feed roller 73 of the feed mechanism 32 abuts against the tube wall of the pipe rod P, and receives the reaction from the tube wall to rotate the construction apparatus S. Further, the inner and outer surface rollers 5 and 6 of the joining mechanism portion 7 are rotationally driven, and the clamping force between the inner surface roller 5 and the outer surface roller 6 is connected to the initial lining pipe Ri by the joint structure at the closing portion H of the belt-like member 100. The newly supplied belt-like member 100 is joined. The entire construction apparatus S revolves in the pipe circumferential direction and advances in the pipe axis direction.
 As a result, the belt-like member 100 is spirally wound and the lining pipe R is manufactured.
 In this step, the force applied to the circumferential length adjusting mechanism 2 with the rotation of the molding claim 1 is received by the interval holding mechanism 3, and no excessive stress is generated in the circumferential length adjusting mechanism 2.
[0043]
(5A) In this step, the running pipe R left behind the construction apparatus S returns to a circular shape due to its elasticity.
 That is, as shown in FIG. 20, the portion of the lining pipe R gripped by the joining mechanism portion 7 receives a pressing force in the central direction via the feed roller 73 and the joining mechanism portion 7 and receives a concave curved surface (A However, as it moves away from the joining mechanism 7 in the depth (axis) direction, it gradually becomes a convex curved surface (B) due to the elasticity of the lining pipe R. In this case, the convex curved surface (B) is in close contact with the wall surface of the pipe rod P or close to the wall surface as close as possible. A symmetric shape is taken with a line y passing through ½ of the distance x to the inner wall surface (contact point of the feed roller 73) as a symmetry axis.
[0044]
(5B) In this step, the belt-like member 100 is sequentially supplied from the unwinding device T arranged on the ground part. In the unwinding device T, as shown in FIG. 17 as an example of the configuration, a turntable 204 is rotatably arranged via a trochanter 202 on a circular rail 200 arranged around the opening of the human hole Q1. Then, a winding drum 206 around which the belt-like member 100 is wound around the turntable 204 is supported rotatably. Thereby, the rotation of the turntable 204 along the circular rail 200 on the horizontal plane and the rotation of the winding drum 206 on the vertical plane are combined.
 The belt-like member 100 is twisted and rotated in accordance with the pipe making operation. In the unwinding device T, the turntable 204 follows this in synchronization with the rotation.
[0045]
(6) When the lining pipe R is constructed over a predetermined length of the pipe rod P (usually the full length section from the manhole Q1 to Q2), the construction apparatus S is removed. Since the construction apparatus S has the circumference adjustment mechanism 2, the removal work is easily performed. First, in the interval holding mechanism 3, the bolt 43 is rotated to move the inner and outer interval holding bodies 41 and 42 away from each other to release the fixing. Thereafter, the adjustment bolt 31 of the circumference adjusting 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.
 The construction apparatus S can also be divided as described above, and can be easily carried out to the outside through the human hole Q.
 With the above, the construction work of this embodiment is completed.
[0046]
 As described above, according to the lining construction of this embodiment, the lining pipe can be formed to the full cross section of the pipe rod as the lining pipe is formed, and it is economical without causing a cross section loss. Can achieve construction.
[0047]
 In the above construction method, the application to the tube rod having a circular cross section is shown, but it can be easily estimated that the application to the tube rod having an oval cross section or a horseshoe cross section is performed according to the above.
[0048]
 The present lining construction method is also applied to a pipe having a rectangular cross section (see FIG. 21).
 There is no substantial change with respect to the construction apparatus S. Even if attached to the shape-retaining tool K, there is substantially no change except that the arc plate 80 portion in contact with the forming frame 1 is changed to resemble the lower half of the rectangular tube rod.
 In the construction, the belt-like member 100 is wound around the forming frame 1 and the shape retaining tool is attached to obtain the initial lining pipe Ri having a predetermined shape prior to the insertion into the pipe rod. Thereafter, the initial lining pipe Ri is drawn into the pipe rod, and construction is performed in accordance with the above.
 When the joining mechanism portion 7 reaches the corner portion, the link of the mounting portion of the molding frame 1 follows the change of the corner portion along the shape.
[0049]
 The present invention is not limited to the above-described embodiments, and various design changes can be made within the scope of the basic technical idea of the present invention. That is, the following aspects are included in the technical scope of the present invention.
1) The joining mechanism section 7 is not limited to hydraulic drive, and a pneumatic motor or an electric motor can be employed.
When adopting a pneumatic motor, the adoption of the rotary joint 77 remains unchanged, but when employing an electric motor, a rotary brush is adopted instead of the rotary joint.
 Alternatively, the manual mechanism is not excluded, and the rollers 5 and 6 are driven by a handle operation via the gear mechanism 31.
[0050]
【The invention's effect】
 According to the present invention, it is possible to form a lining pipe with a full cross section of a tube rod with an easy operation without using a special diameter expansion operation by using a molding frame having a normal flexibility. Therefore, economical construction can be achieved without causing cross-sectional loss.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view showing the whole of an embodiment of a lining construction apparatus in a pipe rod according to the present invention.
FIG. 2 is a front view in which a part of the lining construction apparatus is omitted.
FIG. 3 is a partial cross-sectional plan view of the forming frame constituting the lining construction apparatus (viewed in the direction of arrow 3 in FIG. 4).
4 is a partial cross-sectional side view of the molded frame (viewed in the direction of arrow 4 in FIG. 3).
FIG. 5 is a view showing a mechanism for preventing a middle breakage of a molded frame.
FIG. 6 is a side view of a mounting portion of a molding frame.
7 is a plan view of the mounting portion of the molding frame (viewed in the direction of arrow 7 in FIG. 6).
FIG. 8 is a partial cross-sectional plan view of a circumferential length adjusting mechanism and a spacing holding mechanism arranged on the molding frame.
9 is a cross-sectional view taken along line 9-9 in FIG.
10 is a cross-sectional view taken along line 10-10 in FIG.
FIG. 11 is an enlarged cross-sectional view of the interval holding mechanism.
12 is a sectional view taken along line 12-12 of FIG.
FIG. 13 is an operation diagram of the interval holding mechanism.
FIG. 14 is a front view of a joining mechanism.
FIG. 15 is a longitudinal sectional view of a joining mechanism part.
FIG. 16 is a configuration diagram of a joining roller of a joining mechanism unit.
FIG. 17 is a schematic diagram showing the entire lining construction work.
FIG. 18 is a view showing an embodiment of a shape retaining tool (for circular cross section).
FIG. 19 is a schematic diagram of lining construction work.
FIG. 20 is a view showing a state of a lining pipe around a joining mechanism portion.
FIG. 21 is another diagram of the construction work.
FIG. 22 is a view showing one aspect of a belt-like member.
[Explanation of symbols]
 P ... pipe rod, R ... lining pipe, S ... lining construction device, K ... shape retaining tool, 1 ... molding frame, 2 ... circumference adjusting mechanism, 3 ... spacing holding mechanism, 4 ... guide roller, 5 ... inner surface roller, 6 ... Outer roller, 7 ... Joining mechanism, 10 ... Link body, 73 ... Feed roller, 100 ... Strip member

Claims

In a tube having a substantially circular or rectangular cross-section, a long belt-like member having a long elasticity and having a concave groove in the longitudinal direction of the outer surface and joints formed on both side edges is continuously supplied. A method of forming a tubular body with a belt-like member newly supplied in front of the previously formed tubular body, leaving the tubular body formed by engaging the joints that are in contact with each other, There,
A closed molded frame that has lateral rigidity and is flexible in the radial direction with a link mechanism comprising a series of link bodies, and in which the middle folding of each link body is restricted;
A plurality of guide rollers that are rotatably mounted around the forming frame and abut against the inner surface of a lining pipe formed by spirally winding a belt-like member;
An outer surface roller and an inner surface roller that are attached via the molding frame and are arranged at a closed portion of the already formed lining pipe and a newly supplied belt-like member and sandwich and join the belt-like member, And the outer surface roller has a joining mechanism portion having a flange portion that fits into the groove of the belt-like member;
A feed roller that is arranged in conjunction with the joining mechanism, the outer surface of which projects outwardly, and applies a feed driving force in the direction in which the belt-like member is spirally wound;
The middle folding restriction of the link body of the molding frame to which the joining mechanism portion is attached is released,
While rotating the molding frame, the feed roller is always in contact with the wall surface of the pipe , presses the link body of the molding frame to which the joining mechanism portion is attached in the direction of folding, and a belt-like member around the molding frame Spirally to form a lining tube,
The lining construction method in a pipe tub characterized by this.

In a tube having a substantially circular or rectangular cross-section, a long belt-like member having a long elasticity and having a concave groove in the longitudinal direction of the outer surface and joints formed on both side edges is continuously supplied. Lining construction in which a tubular body is formed by leaving the tubular body formed by winding the joints that are in contact with each other and leaving the tubular body formed in front of the already formed tubular body. A device,
A closed molded frame that has lateral rigidity and is flexible in the radial direction with a link mechanism comprising a series of link bodies, and in which the middle folding of each link body is restricted;
A plurality of guide rollers that are rotatably mounted around the forming frame and abut against the inner surface of a lining pipe formed by spirally winding a belt-like member;
An outer surface roller and an inner surface roller that are attached via the molding frame and are arranged at a closed portion of the already formed lining pipe and a newly supplied belt-like member and sandwich and join the belt-like member, And the outer surface roller has a joining mechanism portion having a flange portion that fits into the groove of the belt-like member;
A feed roller that is arranged in conjunction with the joining mechanism, the outer surface of which projects outwardly, and applies a feed driving force in the direction in which the belt-like member is spirally wound;
The middle folding restriction of the link body of the molding frame to which the joining mechanism portion is attached is released, the feed roller is brought into contact with the wall surface of the pipe rod , and the link body of the molding frame is folded into the middle folding state.
A pipe lining construction device characterized by that.

3. The pipe lining construction apparatus according to claim 2, wherein a circumferential length adjusting mechanism capable of freely changing the circumferential length of the molding frame is arranged on the molding frame.