201120325 六、發明說明： - 【發明所屬之技術領域】 本發明，是關於作爲更生 方法及連結具，其中該更生管 板、及在該內面板之朝向周方 該緣部垂直所立設的側板、以 向延伸之兩端各別的緣部所垂 成形者。 【先前技術】 當被埋設於地下之下水道 不用從地下將該管路掘出，而 該管路的管內襯工法已被提案 上述管內襯工法，是例如 脂吸收材含浸未硬化的熱硬化 管路內一面反翻同使一面插入 該管內襯材按壓於管路之內周 熱使被含浸其中的熱硬化性樹 成塑膠管而補修管路的工法。 又，對於大口徑的管路， 來修復管路的工法（專利文獻 使構成內周面的內面板以及立 —體形成的環片，連結於周方 結構件將該管單元連結於管長: 管之組裝單元的環片的連結 ，是將：構成內周面的內面 向延伸之兩側各別緣部而與 及在該內面板之朝向管長方 直立設的端板，予以一體地 管線等之管路老舊朽化時， 於該內周面施以內襯來修補 並供實際運作。 藉由流體壓力，使由管狀樹 性樹脂所構成的管內襯材於 ，並藉由流體壓力維持在將 壁的狀態下，將管內襯材加 脂硬化，藉此，於管路內形 亦周知有使用如下的更生管 1 ' 2 )，即是將藉由塑膠 設在該內面板周緣的外壁板 向來組裝管單元，並夾介連 方向所成的更生管。 -5- 201120325 [專利文獻1]日本特開2003-286742號公報 [專利文獻2]日本特開2005-299711號公報 【發明內容】 [發明所要解決之問題] 將如專利文獻1、2所記載的環片連接於管長方向時 ’由於是使用具備有螺絲的連結具來連結環片，所以必須 要有螺絲鎖止用工具，又螺絲鎖緊時間費時。而且，在狹 小空間的作業有時不能旋轉螺絲，即使能夠鎖止螺絲但由 於煩雜的重覆作業’作業員的負擔很大，並導致作業時間 的長時間化。 本發明’是爲了解決如此之問題點所硏創的，其課題 在於提供一種能夠以簡單的方法且短時間內效率良好地連 結環片之環片的連結方法及連結具。 [發明解決問題之技術手段] 本發明，是將：構成內周面的內面板；及在該內面板 之朝向周方向延伸之兩側各別緣部而與該緣部垂直所立設 之具有插通孔的側板；以及在側板間與內面板上垂直所立 設，具有孔徑比上述側板之插通孔還小之插通孔的內部板 ，予以一體地成形所成之更生管用環片的連結方法，其特 徵爲·_ 準備：於前端具有能夠插通於內部板之插通孔的突出 部，並由形成有第1突起部與第2突起部之管狀的連結銷 -6- 201120325 半體所組成並能夠插通上述側板之插通孔的中空連結銷； 該第1突起部，是在從該突出部之終端起相隔有上述側板 與內部板之相對向面間的距離的位置，於具有抵接面之外 周面上朝向周方向延伸而成；該第2突起部，是在從上述 第1突起部的抵接面起相隔有上述側板之管長方向厚度之 大致2倍的距離的位置，於具有抵接面之外周面上朝向周 方向延伸而成； 將該連結銷，從一方之環片之側板的插通孔插入，使 前端的突出部插入於內部板的插通孔，並且使第1突起部 的抵接面壓接於上述側板的內側面， 將分離銷壓入於上述連結銷的中空部而使連結銷分離 成連結銷半體，並且藉由分離銷將該已分離的各連結銷半 體壓擴開而使各連結銷半體壓接於側板與內部板的各插通 孔，藉此使連結銷固定於該一方的環片， 使與已分離成連結銷半體之連結銷的插入側爲相反側 的另一端，插入另一方之環片之側板的插通孔，使第2突 起部的抵接面壓接於該側板的內側面而將上述一方與另一 方之環片連結於管長方向。 又，本發明，是用以將：構成內周面的內面板；及在 該內面板之朝向周方向延伸之兩側各別緣部而與該緣部垂 直所立設之具有插通孔的側板；以及在側板間與內面板上 垂直所立設，具有孔徑比上述側板之插通孔還小之插通孔 的內部板，予以一體地成形所成之更生管用環片連結於管 長方向的連結具’其特徵爲： 201120325 具有中空連結銷以及分離銷， 該中空連結銷，係於前端具有能夠插通於內部板之插 通孔的突出部，並由形成有第1突起部與第2突起部之管 狀的連結銷半體所組成並能夠插通上述側板之插通孔；其 中該第1突起部，是在從該突出部之終端起相隔有上述側 板與內部板之相對向面間的距離的位置，於具有抵接面之 外周面上朝向周方向延伸而成；其中該第2突起部，是在 從上述第1突起部的抵接面起相隔有上述側板之管長方向 厚度之大致2倍的距離的位置，於具有抵接面之外周面上 朝向周方向延伸而成； 該分離銷，係被壓入於上述連結銷的中空部而將連結 銷分離成連結銷半體，並且將該已分離的各連結銷半體壓 擴開而使各連結銷半體壓接於側板與內部板的各插通孔， 使該連結銷，從一方之環片之側板的插通孔插入，使 前端的突出部插入於內部板的插通孔，並且使第1突起部 的抵接面壓接於上述側板的內側面， 使分離銷之朝向上述連結銷的中空部壓入，使連結銷 被固定於該一方之環片，使與已分離成連結銷半體之連結 銷的插入側爲相反側的另一端，插入另一方之環片之側板 的插通孔，使第2突起部的抵接面壓接於該側板的內側面 而使上述一方與另一方之環片連結於管長方向。 [發明效果] 根據本發明，由於藉由分離銷將已插入於環片之側板 -8- 201120325 及內部板之插通孔的連結銷，分離成連結銷半體，並藉由 來自分離銷對連結銷半體之各插通孔的壓接，將連結銷固 定於一方的環片’又將連結銷的另一端與另一方的環片予 以鉚固性地嵌合而使兩環片能夠連結於管長方向，所以不 用利用螺絲來鎖緊結合，因此能夠在手腕無法回轉的狹隘 地方進行環片的組裝作業，並且在寬廣的地方進行組裝作 業時，也能夠使組裝作業簡略化、縮短時間而省時化。因 此’對於使用環片組裝更生管來更生既設管之工事時，亦 可以取得縮短工期、減輕作業員的負擔、謀求人員的省力 化等之優異效果。 【實施方式】 以下依據顯示於添附圖面的實施例來詳細地說明本發 明。 [實施例] 於第1圖’圖示出作爲更生管之單位組裝構件的環片 1。環片1’是使用塑膠材料將：構成更生管之內周面的 內面板101;及在該內面板101之朝向周方向延伸之兩側 的各別緣部而與該緣部垂直所立設的側板1 〇 2、1 0 3 ;以 及在同內面板101之朝向管長方向延伸之兩端的各別緣部 而與該緣部垂直所立設的端板104、105，予以一體成形 的塊狀構件。環片1之側板102、103以及端板104、105 是成爲以相同高度從四方將內面板101的周緣予以包圍的 -9- 201120325 外壁板。又，環片1之側板102、103在管長方向 (厚度）係有相同尺寸値。環片，雖是成爲具有將 分成複數個等分的預定角度，例如彎曲成5等分 72度之圓弧狀形狀，但並不限定於圓弧型到扇形 以因應既設管的斷面形狀、或其大小、或既設管的 ，於長方體或直角上作成加上圓弧而折彎的形狀等 爲了補強環片1的機械性強度，因而在側板 103的內側，垂直於內面板101的上表面，設置與 同的複數條內部板（補強板）106、107。又，於側 、1 0 3的內側面與內部板1 0 6、1 0 7的兩側面，於 形成有用以防止各別之變形而突出於側面的凸板 106b、107b，成爲肋構造而提高環片1的強度。 於側板1 02、1 03，於周方向以複數等間隔形 可供於管長方向連結後述環片之連結具插通用之圓 致圓形的插通孔l〇2a、103a»又，於內部板106, 管長方向觀察可分別對應於側板102、103之插通^ ' 103a的位置’形成有可供該連結具插通用之複 形到大致圓形的插通孔1 0 6 a。插通孔1 〇 6 a的內徑 所述，是比插通孔 1 0 2 a、1 0 3 a的外徑還要小。再 內部板1 0 7 ’在分別對應於側板！ 〇 2、1 〇 3之插通] 、103a的對應位置形成有複數個缺欠部1〇7a。 內面板101、側板102、103、端板104、105 作爲補強板來發揮作爲功能的內部板1〇6、107， 各凸板，皆爲以透明、半透明、或不透明的相同塑 的寬幅 圓周等 之具有 ，也可 補修處 〇 102、 側板相 板1〇2 複數處 103b、 成有： 形或大 在朝向 :L 102a 數個圓 ，如後 者，於 I 102a ，以及 以及於 膠所製 -10- 201120325 成，使用習知的成形技術成形爲一體。 於內面板101之端板104、105側的端部，形成有用 以從內側進行將環片1彼此連結於周方向之作業的複數個 長方形開口部1 〇 1 a。 環片1，如第2圖所示，使各環片丨之端板1〇4與 105的外側面緊貼’使螺栓6從內面板1〇1的開口部101a 插通於插通孔l〇4a、105a而螺合於螺帽7，藉由將兩端 板104、105鎖緊而連結於周方向。由於於端板1〇4，及 於管長方向之全長地形成有凹部104b、104c，又於端板 105，及於管長方向之全長地形成有凸部l〇5b、105c並使 之嵌合於各凹部l〇4b、l〇4c，因此在連結時將兩環片定 位並緊貼之作業可以容易進行。又，於各嵌合部藉由事先 塗佈沒有圖示出的密封材料，可以提高連結部的水密性（ 防漏性）。 當環片1於周方向的連結完畢時，各開口部l〇la， 係藉由蓋（沒有圖不）等所密閉。此時，蓋的下表面與各 內面板101的下表面連續，以使內面板101的內面（朝向 管中心的面）成爲均一的面。 環片1於周方向的連結，係以使各內面板1 0 1的內面 成爲均一的面之方式，又以使各側板102 ' 103的外側面 分別成爲同一面之方式，來進行連結，所以當使環片1依 序連結於周方向時，可以組裝成如第3圖所示之成閉合環 圈狀之具有預定較短長度的管體10(以下，稱之爲管單 元）。管單元10，是成爲以垂直於管長方向X之預定寬 -11 - 201120325 幅D將圓管切圈地予以切斷時所得的形狀，其外 所要修復之既設管路的內徑還更小的尺寸値。環片 相當於將該管單元10沿著徑向R分割成複數個（ 中爲5等分）時所取得的構件。 又，在第3圖中，圖示出作爲環片主要之構造 內面板101、側板102、103、端板104、105，而 部板1 06、1 07、凸板等之補強構造，以及插通孔 l〇3a等，爲了避面煩雜，因此省略該等之圖示。 於第4圖、第5圖，是圖示出用於將環片1或 10連結於管長方向的連結具20。連結具20，是由 可疊合連結銷半體22、23之構造的中空部而成管 結銷21、以及將連結銷21分離成連結銷半體22 分離銷24所構成。連結銷21，是由塑膠成形爲一 第5圖（a)所示，設成以薄壁部22a、23a將連結 22、23連結之形狀。連結銷21，如第5圖（b)所 由在薄壁部22a、23a翻折疊合，而成爲如第4圖 示之具有疊合連結銷半體22、23之構造的管狀銷< 連結銷半體22，如第4圖（b) 、（c)所示 有：成爲與連結銷半體23結合之結合部的薄壁部 及從管軸xl以取上部分而朝水平方向切斷圓管後 之形狀的半管狀部22c、及從該半管狀部22c朝向 出之外徑較小之半管狀的突出部22b、及在半管狀 的外周面上朝向周方向延伸的第1突起部22d與第 部22e、以及傾斜部22f，並使第1突起部22d與 徑是比 1，是 圖示例 構件的 對於內 102a' 管單元 :具有 狀的連 、23的 體，如 銷半體 示，藉 (a)所 » ，係具 22a ' 所取得 前端突 部22c 2突起 第2突 -12- 201120325 起部之相互對向的面成爲垂直面，而相反的部分爲傾斜地 連續於半管狀部22c。 連結銷半體23’在第5圖（a)所見是與連結銷半體 22呈左右對稱的形狀’具有分別與連結銷半體22的薄壁 部22a'突出部22b、半管狀部22c、第1突起部22d、第 2突起部22e、傾斜部22f相對應的薄壁部23a、突出部 23b、半管狀部23c、第1突起部23d、第2突起部23e、 傾斜部23f。 連結銷半體22、23，由於分別具有從通過圓管管軸 的水平面以取上部（或是下部）而朝水平切斷後之形狀， 所以如第4圖（a )所示地將連結銷半體2 2、2 3疊合後， 可取得稍微扁平之斷面爲橢圓狀之管狀的連結銷21。 又’在將連結銷半體22、23疊合之後時，如第4圖 (c )所示，於連結銷的內部，形成內徑較小的中空部 21a、和比該內徑還大的中空部21b，又，從第1突起部 22d、23d起，由於連結銷之端部側（右側）的連結銷半 體22、23的壁厚變得較薄，所以形成內徑比中空部2 1 b 更大的中空部2 1 c。 分離銷24爲圓柱狀的銷，係具有：圓錐狀的前端部 24a、圓柱狀的前端部24b、圓柱狀的中央部24c、圓柱狀 的後端部24d。 於第6圖圖示出將連結銷半體22、23疊合後所取得 的連結銷21、分離銷24以及環片1之尺寸。 於環片1之側板103所形成的圓形插通孔103a的直 -13- 201120325 徑D2，是比鄰接於側板i〇3之內部板i〇6的圓形插通孔 106的直徑D1還更大’連結銷21其突出部22b、23b爲 具有預定的間隙可以通過內部板106的插通孔l〇6a，又 ，半管狀部22c、23c爲具有大致同樣的間隙可以通過側 板103之插通孔l〇3a的大小。連結銷21的第1突起部 22d、23d ’其插入側（左側）爲傾斜，具有只要強壓連結 銷藉由彈性，就可以通過插通孔103a的高度（突出量） 。又，連結銷21之第2突起部22e、23e，亦具有與突起 部22d、23d左右對稱的同樣大小。 從連結銷21之突出部22b、23b與半管狀部22c、 23c的交界面S 1起到第1突起部22d、23d之垂直面S2 爲止的距離tl，是大致等於環片1之側板103與內部板 106之相對向面間的距離，第1突起部22d、23d與第2 突起部22e、23e之相對向的垂直面S2、S3間的距離t3， 是環片1之側板1〇3 (或側板102 )於管長方向之厚度t2 的大致2倍。 分離銷24之前端部24b、中央部24c、後端部24d的 外徑pi、p3、p2爲p3>p2>pl的關係。 在連結銷半體22、23已疊合後的狀態下’分離銷24 的中央部24c，係具有可被收納於連結銷21之中空部21c 的大小，而無法插入於中空部21b的大小，分離銷21的 前端部24b，亦具有無法插入於連結銷21之中空部21a 的大小。但是，當將壓力施加壓入到分離銷24時’分離 銷24的中央部24c便會被壓入到連結銷的中空部21b’ -14 - 201120325 又’分離銷24的前端部24b亦被設成可以被壓入到連結 銷的中空部21a之大小。又’分離銷24的中央部24c被 壓入於連結銷的中空部21b，而分離銷24的前端部24b 已被壓入到連結銷的中空部21a時，連結銷21會被壓擴 開’使連結銷的結合部22a、23a被拉斷而分離成連結銷 半體22、23，使分離後的連結銷半體22、23藉由分離銷 24而朝向環片〖的側板1〇3與內部板1〇6的各插通孔 103a' 106a 壓接。 其次’說明使用如此所構成的連結具來將環片連結於 管長方向的方法。 連結銷21，如第4圖（a ) 、（ c )所示，在連結銷 半體22、23被疊合，分離銷24被收納於連結銷21內的 狀態下，如第7圖（a )所示，將要插入於一個環片1之 側板103的插通孔l〇3a。 連結銷21的半管狀部22c、23c，由於可以通過環片 1之側板103的插通孔103a，又，突出部22b、23b可以 通過內部板106的插通孔106a，故連結銷，如第8圖（a )所示，爲帶有預定之間隙而被插入於各插通孔1 03a、 106a。又，由於連結銷21的第1突起部22d、23d的插入 側（左側）爲傾斜，故只要強壓分離銷，如第8圖（b ) 所示，第1突起部22d、23d藉由連結銷的彈性而通過插 通孔103a，此時，由於從突出部22b、23b與半管狀部 22c、23c的交界面S1起到第1突起部22d、23d之垂直 面S2爲止的距離（tl )，相等於側板103與內部板106 -15- 201120325 之相對向面間的距離’所以交界面s 1會抵接於內部板 1 06的內側面’垂直面S2會抵接於側板1 03的內側面。 此狀態下，如第8圖（c) 、（d)所示’當將分離銷 24的後端部24d壓入’使分離銷24的中央部24c壓入於 連結銷的中空部21b，使分離銷的前端部24b壓入連結銷 的中空部21a時’連結銷，其連結部22a、23a便被拉斷 而使連結銷半體22、23分離。並且，已分離的各連結銷 半體22 ' 23藉由分離銷24被壓擴開而使連結銷的突出部 22b、23b壓接於內部板1〇6的插通孔l〇6a，並且其半管 狀部22c、23c壓接於側板103的插通孔l〇3a。藉此，使 連結銷固定於環片1。此時，由於半管狀部22c、23c的 交界面S1是被壓接於內部板106的內側面，又第1突起 部22d、23d的垂直面S2是被壓接於側板1〇3的內側面， 所以使連結銷對環片的固定可變得確實牢靠，並且可以防 止連結銷從環片脫落。此狀態於第7圖（b)亦圖示出。 接著’如第8圖（e) 、（Ο所示，將與已分離成連 結銷半體22、23之連結銷插入側爲相反側的另一端，插 入於另一環片1’之側板102的插通孔i〇2a。由於連結銷 半體22、23爲分離，可朝內側撓彎，所以可容易插入。 側板102是穿越過第2突起部22e、23e的傾斜面，連結 銷21與環片Γ的側板102是鉚固性地嵌合固定。此時 ，由於第1突起部與第2突起部之相互對向之垂直面S2 、S3間的距離，爲側板1 03 ( 1 02 )之板厚的大致2倍， 所以環片1’的側板102，爲壓接於環片1的側板103與 -16- 201120325 第2突起部22e、23e的垂直面S3間的狀態下被固定。又 ，藉由第2突起部2 2e、23e防止環片1’從連結銷脫落 。如此地實施’由於環片Γ被固定於連結銷，所以可以 將環片1與Γ堅固地連結於管長方向。 第9圖（a) 、( b )，是顯示從上面俯視觀察由連結 具20所連結之環片1、Γ的連結狀態。 又’連結銷’其斷面不爲圓管狀，而製成正六角形等 多角形狀亦可。此時，環片的側板與內部板之插通孔的形 狀也要事先製成相對應的形狀。又，連結銷的第1與第2 突起部’可及於連結銷之整個周方向地形成，或是於周方 向斷續性地形成亦可。 環片之供連結具用的插通孔，如第1圖所示，是沿著 側板與內部板的周方向形成複數個，所以在複數個插通孔 之中使連結具20插入於預定數量的插通孔，藉由該連結 具來進行環片於管長方向的連結。但是，由連結具20進 行環片之連結，由於是夾介短的連結具來進行，所以連結 強度較弱。因此，如日本特開2 0 0 5 - 2 9 9 7 1 1號公報所揭示 ’將跨越該環片於管長方向之寬幅而延伸的連結棒插入於 環片的插通孔，藉由使其一端與被固定於另一環片之連結 棒的另一端結合，將連結棒固定於該環片，並且，夾介連 結棒將該環片與另一環片連結於管長方向。此狀態顯示於 第1 0圖。 於第10圖，環片1、1’ 、1” ，在一部分以夾介上 述之連結具20所連結。又，金屬之固定用螺帽32被插通 -17- 201120325 於環片1的側板1 03、以及環片r的側板1 02，並藉由 將金屬螺栓33夾介環片1的內部板1〇6螺鎖入固定用螺 帽32，使固定用螺帽32被固定於環片 跨越環片之兩側板102、103而延伸的金屬連結棒3 1 ’係於軸部31b的一端具有螺紋部31a，另一端爲於內部 具有螺紋31d的螺帽部31c。 使連結棒31通過環片1’的側板及內部板的各插通 孔’藉由旋轉螺帽部3 1 c之從環片Γ的側板1 〇 3所露出 的部分’將連結棒31的螺紋部31a螺鎖入固定用螺帽32 。當將連結棒3 1螺鎖到使螺帽部3 1之插入側的端部壓接 於內部板106，連結棒31固定於環片1’之同時，藉由連 結棒31使環片Γ在被鎖緊於環片丨的狀態下而連結。 ，此時’位於環片1’之連結棒31的螺帽部31c，由於發 揮被固定於環片1之固定用螺帽32之功能，因此同樣地 ，使用另一連結棒31，可以將環片1”連結於環片 Γ ， 同樣地重覆施作，夾介連結棒而可以將複數個環片依序連 結於管長方向。 於以下，說明使用環片來更生既設管的方法。 首先，如第1 1圖所示，將環片1經由人孔井40搬入 於既設管41內，然後將環片1，以如第2圖所示方式， 依序連結於周方向來組裝成管單元10。 接著’同樣地組裝管單元1 〇，再將已組裝好的管單 元10連結於管長方向。該管單元10的連結，是藉由使用 上述的連結具20及/或是連結棒31連結管單元10的各 -18- 201120325 環片1來進行。 如以上所述’藉由在既設管41內將管單元10依序連 結於管長方向’而能夠將更生管42鋪設於既設管41內。 該狀態亦於第12圖中被圖示出。在第12圖中’與第3圖 相同樣地僅圖示出主要要部’對於連結具、連結棒等管長 方向的連結手段或是周方向的連結手段，爲了避免煩雜乃 省略其圖不。 於更生管42的外周與既設管41的內壁面之間’由於 會產生縫隙43，所以在此充塡漿料材（grout )等之塡充 材，使更生管與既設管一體化。又’在本實施例中，管單 元10其各環片的端板，雖然是與另外一管單元之環片的 端板以偏位方式組裝，不過各個端板以對齊之方式來組裝 亦可。第9圖，是將環片的各端板以對齊的方式組裝時的 例示。 【圖式簡單說明】 第1圖是將環片的槪略構成省略一部分，並將部分剖 斷的立體圖。 第2圖是將連結於周方向的2個環片垂直地切斷所觀 察之兩環片的垂直斷面圖。 第3圖是將環片連結於周方向來構成管單元時之管單 元的立體圖。 第4圖（a)爲連結具的立體圖；（b)爲分解連結具 後的立體圖；（c)爲連結具的縱向斷面圖。 -19- 201120325 第5圖（a)是將連結銷半體水平地展開時之連結具 的側面圖：（b )是顯示將連結銷半體折疊而可重疊狀態 之連結具的側面圖。 第6圖是顯示連結銷、分離銷、環片側板、內部板之 尺寸的斷面圖。 第7圖（a)是_示將連結具插入環片之狀態的平面 圖；（b)是將連結具固定於環片後的平面圖。 第8圖（a )是將連結銷插入到環片之內部板前方時 的斷面圖。 第8圖（b)是將連結銷插入到環片之內部板的插通 孔爲止時的斷面圖。 第8圖（c)是將分離銷壓入而使連結銷分離成連結 銷半體時之狀態的斷面圖。 第8圖（d)是將分離銷更加壓入時的斷面圖。 第8圖（e )是要將連結銷插入到另一環片之側板的 插通孔時的斷面圖。 第8圖（f)是藉由連結銷將2個環片連結後的斷面 圖。 第9圖（a)是夾介連結銷要將2個環片連結時的平 面圖；（b)爲兩環片連結後的平面圖。 第10圖是夾介連結具與連結棒要將環片連結於管長 方向時之沿著通過各插通孔之中心之環片圓弧的斷面圖。 第Π圖是在既設管內鋪設由環片所構成之更生管之 狀態的說明圖。 -20- 201120325 第12圖是顯示已鋪設於既設管內之更生管之外觀的 立體圖。 【主要元件符號說明】 1、Γ :環片 1 〇 :管單元 2 0 :連結具 2 1 :連結銷 2 2、2 3 :連結銷半體 22c :半管狀部 22d、23d :第1突起部 22e、23e :第2突起部 2 2 f、2 3 f :傾斜部 2 4 :分離銷 3 1 :連結棒 41 :既設管 42 :更生管 1 0 2、1 0 3 :側板 102a、 103a:插通孔 1 06 :內部板 -21 -201120325 VI. Description of the Invention: - Technical Field of the Invention The present invention relates to a regenerative method and a coupling device, wherein the regenerating tube sheet and a side panel that is vertically disposed at an edge of the inner panel toward the circumference It is formed by the respective edges of the two ends of the extension. [Prior Art] When the underground water channel is buried in the underground, the pipe is not excavated from the underground, and the pipe lining method of the pipe has been proposed by the above-mentioned pipe lining method, for example, the fat absorbing material is impregnated and hardened by thermal hardening. One side of the pipeline is turned over and the other side is inserted into the inner lining of the pipe to press the inner heat of the pipe to make the thermosetting tree impregnated therein into a plastic pipe to repair the pipeline. Moreover, for a large-diameter pipe, a method of repairing a pipe is used (the patent document connects the inner panel forming the inner peripheral surface and the ring piece formed by the vertical body, and is connected to the circumferential structural member to connect the pipe unit to the pipe length: pipe The connection of the ring pieces of the assembly unit is such that the end plates which are formed on both sides of the inner circumferential surface extending from the inner circumferential surface and the end plates which are erected in the longitudinal direction of the inner surface of the inner panel are integrally connected to each other. When the pipeline is old and decayed, the inner peripheral surface is lining to be repaired and put into operation. By the fluid pressure, the pipe lining composed of the tubular resin is maintained and maintained by the fluid pressure. In the state of the wall, the inner lining material is greased and hardened, whereby the inner tube 1 ' 2 ) is also known in the inner shape of the pipe, that is, the outer wall of the inner panel is provided by plastic. The plate is assembled to the tube unit and the tube is inserted into the tube. [Patent Document 1] Japanese Laid-Open Patent Publication No. JP-A No. 2005-286711 (Patent Document 2) [Patent Document 2] [Problems to be Solved by the Invention] As described in Patent Documents 1 and 2 When the ring piece is connected to the pipe length direction, since the ring piece is connected by using a coupling having a screw, it is necessary to have a screw locking tool, and the screw locking time is time consuming. Further, in a small space, the screw may not be rotated, and even if the screw can be locked, the workmanship is heavy due to the troublesome work, and the work time is prolonged. The present invention has been made in order to solve such a problem, and it is an object of the invention to provide a connecting method and a connecting device capable of efficiently connecting a loop piece of a ring piece in a short time and in a short time. [Technical means for solving the problem] The present invention is characterized in that: an inner panel constituting an inner peripheral surface; and an outer edge portion of the inner panel extending in the circumferential direction and being erected perpendicularly to the edge portion a side plate of the insertion hole; and an inner plate which is vertically disposed between the side plates and the inner panel, and has an insertion hole having a smaller opening than the insertion hole of the side plate, and is integrally formed into a ring piece for the tube The connection method is characterized in that: a preparation portion has a protruding portion that can be inserted into an insertion hole of the inner plate at the tip end, and a tubular connecting pin -6-201120325 is formed with the first protrusion portion and the second protrusion portion. a hollow connecting pin formed of a body and insertable into the insertion hole of the side plate; the first protruding portion is located at a distance from a terminal end of the protruding portion with a distance between the opposing faces of the side plate and the inner plate. The circumferential surface of the outer surface having the abutting surface is extended in the circumferential direction; the second protruding portion is spaced apart from the contact surface of the first protruding portion by a distance substantially twice the thickness of the side plate in the tube length direction. Position, with abutment The outer peripheral surface is formed to extend in the circumferential direction; the connecting pin is inserted into the insertion hole of the side plate of one of the ring pieces, and the protruding portion of the front end is inserted into the insertion hole of the inner plate, and the first protruding portion is abutted. The joint surface is crimped to the inner side surface of the side plate, and the separation pin is pressed into the hollow portion of the joint pin to separate the joint pin into the joint pin half, and the separated joint pin half is pressed by the separating pin. Expanding and pressing the connecting pin halves to the insertion holes of the side plate and the inner plate, thereby fixing the connecting pin to the one ring piece, and inserting the connecting pin with the connecting pin that has been separated into the connecting pin half The other end of the opposite side is inserted into the insertion hole of the side plate of the other ring piece, and the abutting surface of the second protrusion is pressed against the inner side surface of the side plate, and the one ring and the other ring piece are connected to the tube length. direction. Moreover, the present invention is for an inner panel that constitutes an inner peripheral surface, and an insertion hole that is erected perpendicularly to the edge portion on both sides of the inner panel that extend in the circumferential direction. a side plate; and an inner plate which is vertically disposed between the side plates and the inner panel, and has an insertion hole having a smaller opening than the insertion hole of the side plate, and the ring plate for forming the tube is integrally formed in the tube length direction The coupling device has the feature that: 201120325 has a hollow connecting pin and a separating pin, and the hollow connecting pin has a protruding portion that can be inserted into the insertion hole of the inner plate at the front end, and the first protruding portion and the second protruding portion are formed. a tubular connecting pin half of the protruding portion is formed and can be inserted through the insertion hole of the side plate; wherein the first protruding portion is spaced apart from the opposite end surface of the side plate and the inner plate from the end of the protruding portion The position of the distance is extended in the circumferential direction on the outer peripheral surface having the abutting surface; wherein the second protrusion is spaced apart from the abutting surface of the first protrusion by the thickness of the tube in the longitudinal direction of the side plate Roughly 2 times a position of the distance extending toward the circumferential direction on the outer peripheral surface having the abutting surface; the separating pin is press-fitted into the hollow portion of the connecting pin to separate the connecting pin into the connecting pin half, and the The separated connecting pin halves are pressure-expanded so that the connecting pin halves are pressed against the respective insertion holes of the side plate and the inner plate, and the connecting pin is inserted from the insertion hole of the side plate of one of the ring pieces, and the front end is inserted The protruding portion is inserted into the insertion hole of the inner panel, and the abutting surface of the first projection is pressed against the inner surface of the side plate, and the separation pin is pressed into the hollow portion of the coupling pin to fix the coupling pin. Inserting the other end of the ring piece that is separated from the insertion pin of the coupling pin half into the insertion hole of the side plate of the other ring piece to abut the second protrusion The surface is pressure-bonded to the inner side surface of the side plate, and the one of the one and the other ring piece are connected to the tube length direction. [Effect of the Invention] According to the present invention, since the connecting pin inserted into the side plate -8-201120325 of the ring piece and the insertion hole of the inner plate is separated by the separating pin, the connecting pin half is separated, and by the pair of separating pins The pressure-bonding of the insertion holes of the coupling pin half is to fix the coupling pin to one of the ring pieces', and the other end of the coupling pin is caulked to the other ring piece to connect the two ring pieces. Since it is in the direction of the tube length, it is not necessary to use a screw to lock the joint. Therefore, it is possible to assemble the ring piece in a narrow place where the wrist cannot be rotated, and when assembling the work in a wide area, the assembly work can be simplified and the time can be shortened. Time saving. Therefore, it is possible to obtain an excellent effect of shortening the construction period, reducing the burden on the operator, and reducing the labor for the person, etc., by assembling the tube by the use of the ring piece to reinforce the work of the pipe. [Embodiment] Hereinafter, the present invention will be described in detail based on embodiments shown in the accompanying drawings. [Embodiment] A ring piece 1 as a unit assembly member of a regenerative tube is illustrated in Fig. 1'. The ring piece 1' is made of a plastic material: an inner panel 101 constituting an inner circumferential surface of the tube; and a respective edge portion on both sides of the inner panel 101 extending in the circumferential direction and standing perpendicularly to the edge portion The side plates 1 〇 2 and 1 0 3 and the end plates 104 and 105 which are erected perpendicularly to the edge portions of the inner panel 101 at both ends extending in the tube length direction are integrally formed into a block shape. member. The side plates 102, 103 and the end plates 104, 105 of the ring piece 1 are -9-201120325 outer wall plates which surround the periphery of the inner panel 101 from the square at the same height. Further, the side plates 102, 103 of the ring piece 1 have the same size 在 in the tube length direction (thickness). The ring piece is formed into a circular shape having a predetermined angle divided into a plurality of equal parts, for example, bent into 5 equal parts and 72 degrees, but is not limited to the arc type to the fan shape to correspond to the sectional shape of the tube. Or the size of the pipe, or the shape of the pipe, which is formed by adding a circular arc to the rectangular parallelepiped or the right angle, etc., in order to reinforce the mechanical strength of the ring piece 1, so that the inner side of the side plate 103 is perpendicular to the upper surface of the inner panel 101. , a plurality of internal plates (reinforcing plates) 106, 107 are provided. Further, on both sides of the inner side surface of the inner side and the inner side surface of the inner panel 1 0 6 and 1 0 7 , the convex plates 106b and 107b which are formed to prevent the respective deformation from protruding on the side surface are formed, and the rib structure is improved. The strength of the ring piece 1. The side plates 1200 and 1300 are arranged at equal intervals in the circumferential direction in the longitudinal direction of the tube, and the connecting pieces of the ring pieces are inserted into the circular round insertion holes l〇2a and 103a». 106, the direction of the tube length can be corresponding to the position of the insertion of the side plates 102, 103 ^ '103a, respectively, forming a through hole 1 0 6 a for the connector to be inserted into a substantially circular shape. The inner diameter of the insertion hole 1 〇 6 a is smaller than the outer diameter of the insertion hole 1 0 2 a, 1 0 3 a. Then the inner plates 1 0 7 ' correspond to the side panels respectively! 〇 2, 1 〇 3 insertions], 103a corresponding positions are formed with a plurality of deficiencies 1 〇 7a. The inner panel 101, the side plates 102, 103, and the end plates 104, 105 function as reinforcing plates to function as internal plates 1 and 6, 107, each of which is transparent, translucent, or opaque. Circumference, etc., can also be repaired at 102, side plate 1b 2, 103b, formed with: shape or large orientation: L 102a several circles, such as the latter, at I 102a, and made by glue -10- 201120325 cheng, formed using a known forming technique. At the end portions on the end plates 104 and 105 side of the inner panel 101, a plurality of rectangular opening portions 1a and 1a for performing an operation of connecting the ring pieces 1 to each other in the circumferential direction from the inside are formed. As shown in FIG. 2, the ring piece 1 is brought into close contact with the outer side faces of the end plates 1〇4 and 105 of the respective ring pieces, so that the bolts 6 are inserted from the opening portions 101a of the inner panel 1〇1 into the insertion holes 1 The crucibles 4a and 105a are screwed to the nut 7, and are locked in the circumferential direction by locking the both end plates 104 and 105. The end plates 1〇4 and the recesses 104b and 104c are formed over the entire length of the tube, and the end plates 105 are formed, and the projections l5b and 105c are formed over the entire length of the tube and are fitted thereto. Since each of the recesses 104b and 104c is provided, the work of positioning and adhering the two loop pieces at the time of joining can be easily performed. Further, by applying a sealing material (not shown) to each fitting portion in advance, the watertightness (leakage resistance) of the joint portion can be improved. When the connection of the ring piece 1 in the circumferential direction is completed, each of the opening portions 10a is sealed by a cover (not shown) or the like. At this time, the lower surface of the cover is continuous with the lower surface of each inner panel 101 so that the inner surface (the surface facing the center of the tube) of the inner panel 101 becomes a uniform surface. The connection of the ring piece 1 in the circumferential direction is such that the inner faces of the inner panels 110 are uniform surfaces, and the outer faces of the side plates 102 103 are respectively connected to each other. Therefore, when the ring pieces 1 are sequentially joined in the circumferential direction, the pipe body 10 (hereinafter referred to as a pipe unit) having a predetermined short length in a closed loop shape as shown in Fig. 3 can be assembled. The tube unit 10 is a shape obtained by cutting a circular tube in a predetermined width -11 - 201120325 D perpendicular to the tube length direction X, and the outer diameter of the tube to be repaired is smaller. Size 値. The ring piece corresponds to a member obtained when the pipe unit 10 is divided into a plurality of (in the middle of 5 equal parts) in the radial direction R. Further, in Fig. 3, the reinforcing inner structure 101, the side plates 102, 103, the end plates 104, 105, which are the main structural members of the ring piece, and the reinforcing structure of the partial plates 106, 107, convex plates, etc., and the insertion are shown. The through holes l〇3a and the like are omitted for the sake of avoiding the surface. 4 and 5 are views showing a coupling 20 for connecting the ring piece 1 or 10 to the tube length direction. The coupling 20 is composed of a hollow portion having a structure in which the coupling pin halves 22 and 23 can be stacked, and a coupling pin 21 and a coupling pin 21 separated into a coupling pin half 22 separating pin 24. The connecting pin 21 is formed of a plastic material and has a shape in which the connecting portions 22 and 23 are connected by the thin portions 22a and 23a as shown in Fig. 5(a). The connecting pin 21 is folded over at the thin portions 22a and 23a as shown in Fig. 5(b), and is a tubular pin having a structure in which the connecting pin halves 22 and 23 are overlapped as shown in Fig. 4; As shown in Figs. 4(b) and 4(c), the pin half 22 has a thin portion which is a joint portion that is joined to the joint pin half 23, and is cut in a horizontal direction from the tube shaft x1 by taking an upper portion. a semi-tubular portion 22c having a shape after the round pipe, and a semi-tubular projecting portion 22b having a smaller outer diameter from the semi-tubular portion 22c, and a first projection extending in the circumferential direction on the outer peripheral surface of the semi-tubular tube 22d and the second portion 22e, and the inclined portion 22f, and the first projection 22d and the diameter are ratio 1, which is the inner 102a' tube unit of the illustrated example member: a body having a shape, 23, such as a pin half. It is shown that, by (a), the base 22a' is obtained, the front end projection 22c 2 is protruded from the second projection -12-201120325, and the opposite faces of the starting portion become vertical faces, and the opposite portions are obliquely continuous to the semi-tubular shape. Part 22c. The connecting pin half body 23' has a shape that is bilaterally symmetrical with the connecting pin half 22 as seen in Fig. 5(a), and has a thin portion 22a' protruding portion 22b and a semi-tubular portion 22c, respectively, which are connected to the connecting pin half 22, The first projection 22d, the second projection 22e, and the inclined portion 22f correspond to the thin portion 23a, the protruding portion 23b, the semi-tubular portion 23c, the first projection portion 23d, the second projection portion 23e, and the inclined portion 23f. The joint pin halves 22 and 23 each have a shape that is cut horizontally from the horizontal plane passing through the axis of the circular tube to the upper portion (or the lower portion), so that the joint pin half is as shown in Fig. 4(a). After the bodies 2, 2 and 3 are superposed, a tubular connecting pin 21 having a slightly flattened elliptical cross section can be obtained. Further, when the coupling pin halves 22 and 23 are overlapped, as shown in Fig. 4(c), a hollow portion 21a having a small inner diameter is formed inside the coupling pin, and a larger inner diameter than the inner diameter is formed. In the hollow portion 21b, the thickness of the connecting pin halves 22, 23 on the end side (right side) of the connecting pin is thinner from the first projections 22d and 23d, so that the inner diameter is larger than the hollow portion 2 1 b Larger hollow 2 1 c. The separation pin 24 is a cylindrical pin having a conical tip end portion 24a, a cylindrical distal end portion 24b, a cylindrical central portion 24c, and a cylindrical rear end portion 24d. Fig. 6 is a view showing the size of the joint pin 21, the split pin 24, and the loop piece 1 which are obtained by laminating the joint pin halves 22, 23. The straight -13 to 201120325 diameter D2 of the circular insertion hole 103a formed in the side plate 103 of the ring piece 1 is larger than the diameter D1 of the circular insertion hole 106 adjacent to the inner plate i〇6 of the side plate i〇3. The larger 'coupling pin 21' has its projections 22b, 23b which have a predetermined gap through the insertion holes 16a of the inner panel 106. Further, the semi-tubular portions 22c, 23c have substantially the same clearance and can be inserted through the side plates 103. The size of the through hole l〇3a. The first projections 22d and 23d' of the coupling pin 21 are inclined on the insertion side (left side), and have a height (protrusion amount) through which the through hole 103a can be inserted by the strong compression coupling pin. Further, the second projections 22e and 23e of the coupling pin 21 have the same size as the left and right symmetry of the projections 22d and 23d. The distance t1 from the interface S1 between the protruding portions 22b and 23b of the coupling pin 21 and the semi-tubular portions 22c and 23c to the vertical surface S2 of the first projections 22d and 23d is substantially equal to the side plate 103 of the ring piece 1 and The distance between the opposing faces of the inner plate 106, and the distance t3 between the first projections 22d and 23d and the opposing vertical faces S2 and S3 of the second projections 22e and 23e are the side plates 1〇3 of the ring piece 1 ( Or the side plate 102) is approximately twice the thickness t2 in the tube length direction. The outer diameters pi, p3, and p2 of the front end portion 24b, the central portion 24c, and the rear end portion 24d of the separation pin 24 are in the relationship of p3 > p2 > pl. In a state in which the coupling pin halves 22 and 23 are overlapped, the central portion 24c of the separating pin 24 has a size that can be accommodated in the hollow portion 21c of the coupling pin 21, and cannot be inserted into the hollow portion 21b. The distal end portion 24b of the separation pin 21 also has a size that cannot be inserted into the hollow portion 21a of the coupling pin 21. However, when the pressure is applied to the separation pin 24, the central portion 24c of the separation pin 24 is pressed into the hollow portion 21b' of the coupling pin - 201120325. Further, the front end portion 24b of the separation pin 24 is also provided. It can be pressed into the size of the hollow portion 21a of the joint pin. Further, the central portion 24c of the separation pin 24 is press-fitted into the hollow portion 21b of the coupling pin, and when the front end portion 24b of the separation pin 24 is pressed into the hollow portion 21a of the coupling pin, the coupling pin 21 is pressed and expanded' The joint portions 22a and 23a of the joint pin are separated and separated into the joint pin halves 22 and 23, and the separated joint pin halves 22 and 23 are separated from the side plate 1〇3 of the loop piece by the separation pin 24. The respective insertion holes 103a' 106a of the inner plates 1〇6 are crimped. Next, a method of joining the loop piece to the tube length direction using the coupling member thus constructed will be described. As shown in Fig. 4 (a) and (c), the joint pin 21 is in a state in which the joint pin halves 22 and 23 are overlapped and the split pin 24 is housed in the joint pin 21, as shown in Fig. 7 (a). ), the insertion hole l〇3a to be inserted into the side plate 103 of one ring piece 1 is shown. Since the semi-tubular portions 22c and 23c of the joint pin 21 can pass through the insertion holes 103a of the side plates 103 of the ring piece 1, and the protruding portions 22b and 23b can pass through the insertion holes 106a of the inner plate 106, the joint pins, such as 8 (a) is inserted into each of the insertion holes 103a, 106a with a predetermined gap. Further, since the insertion side (left side) of the first projections 22d and 23d of the joint pin 21 is inclined, the first projections 22d and 23d are connected by the pin as shown in Fig. 8(b). The elasticity passes through the insertion hole 103a. At this time, the distance (tl) from the interface S1 between the protruding portions 22b and 23b and the semi-tubular portions 22c and 23c to the vertical surface S2 of the first projections 22d and 23d is Corresponding to the distance between the opposite faces of the side plates 103 and the inner plates 106 -15- 201120325, the interface s 1 will abut against the inner side of the inner plate 106. The vertical surface S2 will abut the inner side of the side plate 103. . In this state, as shown in Fig. 8 (c) and (d), when the rear end portion 24d of the separating pin 24 is press-fitted, the central portion 24c of the separating pin 24 is press-fitted into the hollow portion 21b of the coupling pin. When the distal end portion 24b of the separating pin is press-fitted into the hollow portion 21a of the connecting pin, the connecting pin is broken, and the connecting portions 22a and 23a are pulled apart to separate the connecting pin halves 22 and 23. Further, the separated coupling pin halves 22'23 are press-expanded by the separating pin 24, and the protruding portions 22b, 23b of the coupling pin are crimped to the insertion holes 16a of the inner panel 1〇6, and The semi-tubular portions 22c, 23c are crimped to the insertion holes 103a of the side plates 103. Thereby, the joint pin is fixed to the ring piece 1. At this time, since the interface S1 of the semi-tubular portions 22c and 23c is crimped to the inner side surface of the inner panel 106, the vertical surface S2 of the first projections 22d and 23d is crimped to the inner side of the side panel 1〇3. Therefore, the fixing of the connecting pin to the ring piece can be made secure, and the connecting pin can be prevented from coming off the ring piece. This state is also illustrated in Figure 7(b). Then, as shown in Fig. 8(e), (Ο, the other end opposite to the side where the coupling pin of the coupling pin half 22, 23 is separated is inserted into the side plate 102 of the other ring piece 1'. The insertion hole i〇2a is formed so that the coupling pin halves 22 and 23 are separated and can be bent inward. Therefore, the side plate 102 is an inclined surface that passes through the second projections 22e and 23e, and the coupling pin 21 and the ring are provided. The side plate 102 of the sheet is fitted and fixed by caulking. In this case, the distance between the vertical surfaces S2 and S3 of the first projection and the second projection facing each other is the side plate 101 (102). Since the thickness of the plate is approximately twice as large, the side plate 102 of the ring piece 1' is fixed in a state of being pressed between the side plate 103 of the ring piece 1 and the vertical surface S3 of the second protrusions 22e and 23e of -16-201120325. By the second projections 2 2e and 23e, the ring piece 1' is prevented from coming off the coupling pin. Thus, since the ring piece is fixed to the coupling pin, the ring piece 1 and the ring can be firmly coupled to the pipe length direction. Fig. 9 (a) and (b) show the connection state of the ring pieces 1 and Γ connected by the connecting tool 20 in a plan view from the top. The knot "the cross section is not a circular tube shape, but may be formed into a polygonal shape such as a hexagonal shape. At this time, the shape of the insertion hole of the side plate and the inner plate of the ring piece is also formed into a corresponding shape in advance. The first and second projections ' of the coupling pin may be formed in the entire circumferential direction of the coupling pin or may be intermittently formed in the circumferential direction. The insertion hole for the coupling piece of the ring piece is as described. As shown in FIG. 1 , a plurality of the circumferential plates and the inner plate are formed in the circumferential direction. Therefore, the connecting device 20 is inserted into a predetermined number of insertion holes among the plurality of insertion holes, and the connecting piece is used to perform the ring piece. The connection in the direction of the tube length. However, since the connection of the loop piece by the coupling device 20 is performed by the coupling device having a short gap, the connection strength is weak. Therefore, for example, the Japanese special opening 2 0 0 5 - 2 9 9 7 Disclosed in the 1st publication, 'a connecting rod extending across a wide width of the ring piece in the length direction of the tube is inserted into the insertion hole of the ring piece by having one end thereof and the other end of the connecting rod fixed to the other ring piece Bonding, fixing the connecting rod to the ring piece, and the intervening connecting rod will The sheet is connected to the other ring piece in the direction of the tube length. This state is shown in Fig. 10. In Fig. 10, the ring piece 1, 1', 1" is partially connected by the above-mentioned connecting device 20. The fixing nut 32 is inserted through the side plate 103 of the ring piece 1 and the side plate 102 of the ring piece r, and is clamped by the metal bolt 33 to the inner plate 1〇6 of the ring piece 1. The fixing nut 32 is locked, and the fixing nut 32 is fixed to the metal connecting rod 3 1 ' which extends over the side plates 102 and 103 of the ring piece, and has a threaded portion 31a at one end of the shaft portion 31b. One end is a nut portion 31c having a thread 31d inside. The connecting rod 31 is passed through the side plate of the ring piece 1' and the respective insertion holes of the inner plate. The thread of the connecting rod 31 is connected by the portion of the rotating nut portion 3 1 c exposed from the side plate 1 〇 3 of the ring piece ' 3 The portion 31a is screwed into the fixing nut 32. When the connecting rod 31 is screwed to the end portion on the insertion side of the nut portion 31, the inner rod 106 is crimped, and the connecting rod 31 is fixed to the ring piece 1', and the ring piece is held by the connecting rod 31. It is connected by being locked in the state of the ring piece. In this case, the nut portion 31c of the connecting rod 31 located in the ring piece 1 has a function of being fixed to the fixing nut 32 of the ring piece 1. Therefore, the other connecting rod 31 can be used in the same manner. The sheet 1" is connected to the loop piece Γ, and is repeatedly applied in the same manner, and the plurality of ring pieces can be sequentially connected to the tube length direction by interposing the connecting rod. Hereinafter, a method of using the ring piece to regenerate the existing tube will be described. As shown in Fig. 1, the ring piece 1 is carried into the existing pipe 41 through the manhole well 40, and then the ring piece 1 is sequentially connected to the circumferential direction in the manner shown in Fig. 2 to assemble the pipe unit. 10. Then, the tube unit 1 is assembled in the same manner, and the assembled tube unit 10 is connected to the tube length direction. The connection of the tube unit 10 is connected by using the above-described connecting rod 20 and/or the connecting rod 31. The -18-201120325 ring piece 1 of the pipe unit 10 is carried out. As described above, the tube unit 10 can be laid in the existing pipe 41 by sequentially connecting the pipe unit 10 to the pipe length direction in the existing pipe 41. This state is also illustrated in Figure 12. In Figure 12, 'and 3' Similarly, only the main part 'connection means for the pipe length direction such as the connecting device and the connecting rod, or the connecting means in the circumferential direction are shown, and the drawings are omitted in order to avoid nuisance. The outer circumference of the tube 42 and the tube 41 are provided. Since the gap 43 is formed between the inner wall surfaces, the crucible is filled with a grout or the like to integrate the regenerative tube with the existing tube. In the present embodiment, the tube unit 10 is each The end plates of the ring piece are assembled in an offset manner with the end plates of the ring pieces of the other tube unit, but the end plates may be assembled in an aligned manner. FIG. 9 is the end plate of the ring piece. [Brief Description of the Drawings] Fig. 1 is a perspective view in which a part of the ring piece is omitted and partially broken. Fig. 2 is a view showing two rings connected in the circumferential direction. The vertical cross-sectional view of the two ring pieces observed is cut vertically. Fig. 3 is a perspective view of the pipe unit when the ring piece is connected to the circumferential direction to form a pipe unit. Fig. 4(a) is a perspective view of the connecting piece. (b) is a perspective view after decomposing the joint; (c) Fig. 1-5- 201120325 Fig. 5 (a) is a side view of the coupling when the coupling pin half is horizontally unfolded: (b) shows that the coupling pin half is folded and can be overlapped Fig. 6 is a cross-sectional view showing the dimensions of the connecting pin, the separating pin, the ring side plate, and the inner plate. Fig. 7(a) is a view showing the state in which the connecting piece is inserted into the ring piece. (b) is a plan view in which the coupling member is fixed to the ring piece. Fig. 8(a) is a cross-sectional view showing the insertion pin inserted in front of the inner plate of the ring piece. Fig. 8(b) is a connection A cross-sectional view of the pin inserted into the insertion hole of the inner plate of the ring piece. Fig. 8(c) is a cross-sectional view showing a state in which the separation pin is press-fitted to separate the coupling pin into the coupling pin half. Fig. 8(d) is a cross-sectional view showing the separation pin being further pressed. Fig. 8(e) is a cross-sectional view of the insertion hole to be inserted into the side plate of the other ring piece. Fig. 8(f) is a cross-sectional view showing the connection of two ring pieces by a joint pin. Fig. 9(a) is a plan view showing a state in which two ring pieces are to be joined to each other, and (b) is a plan view in which two ring pieces are connected. Fig. 10 is a cross-sectional view showing the circular arc of the ring passing through the center of each insertion hole when the interposing link and the connecting rod are connected to the tube length direction. The figure is an explanatory view of the state in which the tube is formed by the ring piece in the existing pipe. -20- 201120325 Figure 12 is a perspective view showing the appearance of a rehabilitated tube that has been laid in an existing pipe. [Description of main component symbols] 1. Γ: ring piece 1 〇: pipe unit 2 0 : coupling 2 1 : coupling pin 2 2, 2 3 : coupling pin half 22c: semi-tubular portion 22d, 23d: first projection 22e, 23e: second protrusion 2 2 f, 2 3 f : inclined portion 2 4 : separation pin 3 1 : connection rod 41 : tube 42 : tube 1 0 2 , 1 0 3 : side plates 102a, 103a: insertion Through hole 1 06 : internal plate 21 -