JP5291399B2 - Rehabilitation of existing pipes - Google Patents

Rehabilitation of existing pipes Download PDF

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JP5291399B2
JP5291399B2 JP2008181396A JP2008181396A JP5291399B2 JP 5291399 B2 JP5291399 B2 JP 5291399B2 JP 2008181396 A JP2008181396 A JP 2008181396A JP 2008181396 A JP2008181396 A JP 2008181396A JP 5291399 B2 JP5291399 B2 JP 5291399B2
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pipe
spiral
reinforcing material
existing
tube
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JP2009149049A (en
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将 中垣
知徳 山路
俊男 山根
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Sekisui Chemical Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To renew an existing pipe by smoothly piping a spiral pipe having a diameter causing no gap between the existing pipe and the spiral pipe, even in the case of the existing pipe having bending parts or difference in level or the existing pipe long in the construction distance. <P>SOLUTION: The spiral pipe is piped by inserting a spiral strip on which joining parts are formed at both end parts into a manhole from the ground side and joining the joining parts of the adjacent strip to each other by a piping machine having a joining mechanism for joining the joining parts to each other. The existing pipe is renewed by rotating the piping machine around the axial center of the existing pipe in the manhole to form the spiral pipe and drawing the spiral pipe without winding to insert and place the spiral pipe into the existing pipe. <P>COPYRIGHT: (C)2009,JPO&amp;INPIT

Description

本発明は、老朽化した下水道管、上水道管、農業用水管、ガス管などの既設管の更生方法に関する。   The present invention relates to a method for rehabilitating existing pipes such as aged sewer pipes, water pipes, agricultural water pipes, and gas pipes.

従来より、両側縁部に接合部が形成された帯状体をマンホール内に設置した製管機に供給し、供給された帯状体を製管機によって螺旋状に巻き回して、互いに隣接する接合部同士を接合して螺旋管を製管し、製管された螺旋管を回転させながら既設管内に挿入する既設管の更生方法が知られている（例えば、特許文献１参照。）。この更生方法で用いる製管機は、既に形成された螺旋管と新たに供給される帯状体とを接合させる製管ローラが定位置に配置されており、製管された螺旋管は回転しながら既設管内に挿入される。   Conventionally, a belt-like body having joints formed on both side edges is supplied to a pipe making machine installed in a manhole, and the supplied belt-like body is spirally wound by the pipe making machine so as to be adjacent to each other. There is known a method of rehabilitating an existing pipe that joins together to form a helical pipe and inserts the produced helical pipe into an existing pipe while rotating the pipe (for example, see Patent Document 1). In the pipe making machine used in this rehabilitation method, a pipe making roller that joins an already formed helical pipe and a newly supplied belt-like body is arranged at a fixed position, and the produced helical pipe is rotated. It is inserted into the existing pipe.

また、アウターローラとインナーローラとを有する接合機構が取付フレームに設けられた製管機を用い、製管機が既設管内を公転しつつ軸芯方向に移動することにより、接合機構が帯状体を挟着して螺旋管を形成し、製管された螺旋管を既設管内に残置させる既設管の更生方法も知られている（例えば、特許文献２参照。）。
特開平６−１９０９２２号公報 特開平８−２００５４７号公報 In addition, using a pipe making machine in which a joining mechanism having an outer roller and an inner roller is provided on the mounting frame, the joining mechanism moves the belt-like body while revolving in the existing pipe while moving in the axial direction. There is also known a method of rehabilitating an existing tube that is sandwiched to form a helical tube, and the produced helical tube is left in the existing tube (see, for example, Patent Document 2).
JP-A-6-190922 Japanese Patent Laid-Open No. 8-200177

上記の特許文献１の製管方法によると、製管された螺旋管が回転しながら既設管内に挿入されることにより、既設管の曲り部に達したり、ある程度の奥行きまで挿入して螺旋管が自重で既設管の内面と摩擦した場合には、回転によって螺旋管における隣合う帯状体同士の接合部が相互に滑るため、螺旋管が拡径して既設管の内周面に押し付けられて、それ以上挿入できなくなることがある。   According to the pipe manufacturing method of Patent Document 1 described above, the spiral pipe that has been manufactured is inserted into the existing pipe while rotating, so that it reaches the bent portion of the existing pipe or is inserted to a certain depth to form the spiral pipe. When it rubs against the inner surface of the existing pipe by its own weight, the joint between adjacent strips in the spiral pipe slides with each other by rotation, so that the spiral pipe expands and is pressed against the inner peripheral surface of the existing pipe. It may become impossible to insert any more.

また、特許文献２の製管方法においては、製管機自体が既設管内を公転しながら進入していくが、既設管の管径が８００ｍｍより小さい場合には、作業者が入ることは危険かつ困難とされており、既設管の途中で製管機が故障した場合には修理することが非常に困難である。また、アウターローラが、製管された螺旋管の外径方向に突出するので、螺旋管と既設管の内周面との間にはアウターローラの可動用の隙間が必要であり、製管できる螺旋管の管径が既設管に比べて小さくならざるを得ないものである。   Further, in the pipe making method of Patent Document 2, the pipe making machine itself enters while revolving inside the existing pipe. However, if the pipe diameter of the existing pipe is smaller than 800 mm, it is dangerous for an operator to enter. It is considered difficult, and it is very difficult to repair when a pipe making machine fails in the middle of existing pipes. Moreover, since the outer roller protrudes in the outer diameter direction of the pipe-formed spiral tube, a gap for moving the outer roller is necessary between the spiral pipe and the inner peripheral surface of the existing pipe, and the pipe can be manufactured. The pipe diameter of the spiral pipe must be smaller than that of the existing pipe.

そこで、本発明は、曲り部や段差のある既設管や施工距離が長い既設管であっても、既設管との間に隙間のほとんど無い螺旋管をスムーズに製管できる既設管の更生方法を提供することを目的とする。   Therefore, the present invention provides a method for rehabilitating an existing pipe that can smoothly produce a spiral pipe with almost no gap between the existing pipe even if it is an existing pipe having a bent portion or a step or an existing pipe having a long construction distance. The purpose is to provide.

また、製管機が故障しても修理のために既設管内に入る必要がなく、小口径の既設管でも安心して施工できる既設管の更生方法を提供することを本発明の他の目的とする。   It is another object of the present invention to provide a method for rehabilitating an existing pipe that can be safely constructed even with a small diameter existing pipe without having to enter the existing pipe for repair even if the pipe making machine fails. .

本発明の既設管の更生方法は、両側縁部に接合部が形成され、長手方向に連続する金属製の補強材が装着された螺旋状の補強材付き帯状体を地上側からマンホール内に引き入れ、互いに隣接する帯状体の接合部同士を接合する接合機構を有する製管機によって接合部同士を接合して螺旋管を製管し、既設管を更生する方法であって、補強材付き帯状体を地上において螺旋管の曲率半径と略同等の曲率半径、又は、螺旋管の曲率半径と同等以下の曲率半径に塑性変形させて円弧状の巻き癖を形成し、円弧状に塑性変形させた螺旋状の補強材付き帯状体をマンホール内に引き入れてマンホール内に配置された製管機に導き、マンホール内において製管機を螺旋管の軸心回りに公転させて螺旋管を製管するとともに、製管機から螺旋管を取り外さない状態で製管機または螺旋管を牽引または押圧して螺旋管を巻き回さない状態で既設管内に挿入することを特徴とするものである。
The method of rehabilitating the existing pipe of the present invention is to draw a band with a spiral reinforcing material having joints formed on both side edges and a metal reinforcing material continuous in the longitudinal direction from the ground side into a manhole. a method of bonding the bonding portions by the pipe producing machine having a joint mechanism for joining the joint portions of the strip by Seikan the spiral tube to rehabilitate existing pipes adjacent to each other, the reinforcing material-strip Is formed into an arcuate curl by plastic deformation to a radius of curvature approximately equal to the radius of curvature of the spiral tube on the ground, or a radius of curvature equal to or less than the radius of curvature of the spiral tube, and the spiral plastically deformed into an arc shape A strip with reinforcing material is drawn into the manhole and led to a pipe making machine arranged in the manhole. Do not remove the spiral tube from the pipe making machine Is characterized in that the pipe producing machine or spiral tube pulling or pushing to be inserted into the existing pipe with no wound the spiral tube in a state.

本発明によれば、両側縁部に接合部が形成され、長手方向に連続する金属製の補強材が装着された補強材付き帯状体を地上において螺旋管の曲率半径と略同等の曲率半径、又は、螺旋管の曲率半径と同等以下の曲率半径に塑性変形させて円弧状の巻き癖を形成し、円弧状に塑性変形させた螺旋状の補強材付き帯状体をマンホール内に引き入れてマンホール内に配置された製管機に導き、マンホール内において製管機を螺旋管の軸心回りに公転させて螺旋管を製管するとともに、製管機から螺旋管を取り外さない状態で製管機または螺旋管を牽引または押圧して螺旋管を巻き回さない状態で既設管内に挿入する。
According to the present invention, a band with a reinforcing material on which a joint is formed on both side edge portions and a metal reinforcing material continuous in the longitudinal direction is mounted on the ground, a curvature radius substantially equal to the curvature radius of the helical tube on the ground, Alternatively, an arcuate curl is formed by plastic deformation to a radius of curvature equal to or less than the radius of curvature of the spiral tube, and a strip-shaped body with a helical reinforcement material plastically deformed into an arc is drawn into the manhole. In the manhole, the pipe making machine is revolved around the axis of the helical pipe to make the helical pipe, and the pipe making machine or the pipe making machine without removing the helical pipe from the pipe making machine. The spiral tube is pulled or pressed to be inserted into the existing tube without being wound.

これにより、補強材が装着されて剛性が大きな補強材付き帯状体を、口径の小さなマンホールに容易に引き入れることができるとともに、公転する製管機の軌道に対応してスムーズに接合機構に導いて螺旋管を製管することができる。また、螺旋管が既設管の内周面と接触しても周方向への回転力を受けることがないため、螺旋管が拡径するのを防止でき、曲り部や段差部がある既設管や、施工距離が長い既設管であっても、螺旋管を既設管内にスムーズに製管して挿入できる。さらに、製管機はマンホール内で製管を行うので、作業中に製管機が故障してもマンホール内にて容易に修理作業を行うことができる。さらにまた、螺旋管は連続的に製管されることにより、接合部同士の止水性を確保することができる。
As a result, it is possible to easily draw in a manhole with a stiffener with a stiffener and a stiffener attached to the manhole with a small diameter, and smoothly guide it to the joining mechanism corresponding to the orbit of the revolving pipe making machine. Spiral tubes can be made. In addition, since the spiral tube does not receive a rotational force in the circumferential direction even when it contacts the inner peripheral surface of the existing tube, the spiral tube can be prevented from expanding in diameter, Even if the existing pipe has a long construction distance, the spiral pipe can be smoothly formed and inserted into the existing pipe. Furthermore, since the pipe making machine performs the pipe making in the manhole, even if the pipe making machine breaks down during the work, the repair work can be easily performed in the manhole. Furthermore, the helical tube by being continuously Seikan, it is possible to ensure the water stopping between joints.

本発明において、製管された螺旋管の先頭部に索条体を連結して既設管内に牽引することが好ましい。これにより、マンホール内において、製管機から螺旋管が脱落することを確実に防止して螺旋管を製管しつつ既設管内に挿入することができる。また、螺旋管の先頭部を牽引することにより、既設管の屈曲などに対応し易いものとなる。   In the present invention, it is preferable to connect the striated body to the head portion of the manufactured spiral tube and pull it into the existing tube. Thereby, in the manhole, the spiral tube can be reliably prevented from dropping off from the pipe making machine, and the spiral tube can be inserted into the existing tube while being manufactured. In addition, by pulling the head of the spiral tube, it becomes easy to cope with bending of the existing tube.

本発明によれば、補強材が装着されて剛性が大きな補強材付き帯状体を、口径の小さなマンホールに容易に引き入れることができるとともに、公転する製管機の軌道に対応してスムーズに接合機構に導いて螺旋管を製管することができる。また、製管機で製管した螺旋管を巻き回さない状態で既設管に挿入するため、螺旋管が回転しながら既設管内に挿入される場合と違い、螺旋管が既設管の内面と接触する場合でも周方向への回転力を受けることがない。すなわち、隣合う帯状体同士が接合部において周方向に滑ることがないので、螺旋管が拡径するのを防止でき、曲り部や段差部がある既設管や、施工距離が長い既設管であっても、螺旋管を既設管内にスムーズに挿入して敷設することができる。 According to the present invention, it is possible to easily draw a reinforcing material-attached band with a reinforcing material into a manhole with a small diameter, and smoothly join a mechanism corresponding to the orbit of a revolving pipe making machine. The spiral tube can be made by guiding to Also, since the spiral tube made by the pipe making machine is inserted into the existing tube without being wound, the spiral tube contacts the inner surface of the existing tube, unlike when the spiral tube is inserted into the existing tube while rotating. Even when doing, it does not receive the rotational force in the circumferential direction. That is, since adjacent strips do not slide in the circumferential direction at the joint, it is possible to prevent the spiral pipe from expanding in diameter, and existing pipes with bent parts or stepped parts or existing pipes with a long construction distance. However, the spiral tube can be smoothly laid and installed in the existing tube.

また、製管機は既設管内には進入せずにマンホール内で製管を行うので、作業中に製管機が故障してもマンホール内にて容易に修理作業を行うことができる。これに対し、製管機が既設管内に進入しながら螺旋管を残置する方法では、人間が入れないような小口径の既設管の途中で製管機が故障すれば非常に修理作業が難航するが、本発明の更生方法によれば修理し易く、安心して作業を行うことができる。   In addition, since the pipe making machine does not enter the existing pipe and makes the pipe in the manhole, even if the pipe making machine breaks down during the work, the repair work can be easily performed in the manhole. On the other hand, in the method of leaving the spiral tube while the pipe making machine enters the existing pipe, if the pipe making machine breaks down in the middle of the existing small pipe that humans cannot enter, the repair work becomes very difficult. However, according to the rehabilitation method of the present invention, it is easy to repair and work can be performed with peace of mind.

以下、本発明の実施形態を図面に基づいて説明する。   Hereinafter, embodiments of the present invention will be described with reference to the drawings.

まず、本発明の既設管の更生方法を説明するのに先立って、更生方法に使用される補強材付き帯状体および補強材付き帯状体から螺旋管を製管する製管装置について説明する。   First, prior to explaining the method for rehabilitating an existing pipe according to the present invention, a belt-like body with a reinforcing material used for the rehabilitation method and a pipe making apparatus for making a spiral pipe from the belt-like body with a reinforcing material will be explained.

補強材付き帯状体（プロファイル）１００は、図１，図２に示すように、帯状体１１０と、該帯状体１１０に装着された補強材１２０とから構成される。   As shown in FIGS. 1 and 2, the band-like body with a reinforcing material (profile) 100 includes a belt-like body 110 and a reinforcing material 120 attached to the belt-like body 110.

帯状体１１０は、可撓性を有する合成樹脂、例えば、硬質塩化ビニル、ポリエチレン、ポリプロピレンなどを押出成形して形成され、帯板状の基板１１１の裏面に複数本（実施例においては２本）の断面Ｔ字状の補強リブ１１２が先端を基板１１１と平行に位置して設けられている。そして、基板１１１の一方の側縁部の裏面には接合部としての接合凸部１１３が立設されている。また、基板１１１の他方の側縁部は、接合凸部１１３が設けられた基板１１１の側縁部が配置されるように、基板１１１の厚みだけ裏面側に段落ちした段落ち部１１４に形成されており、その段落ち部１１４に接合凸部１１３が嵌入し得る接合部としての接合凹部１１５が設けられている。接合凹部１１５には、基板１１１から離れるにつれて接合凹部１１５の突出側に位置するように傾斜された傾斜リブ１１６が形成されており、傾斜リブ１１６の先端が帯状体１１０の一方の側縁部を形成している。   The belt-shaped body 110 is formed by extrusion molding a flexible synthetic resin, for example, hard vinyl chloride, polyethylene, polypropylene, and the like, and a plurality of strips (two in the embodiment) are formed on the back surface of the strip-shaped substrate 111. Reinforcing ribs 112 having a T-shaped cross section are provided with their tips positioned parallel to the substrate 111. A bonding projection 113 as a bonding portion is erected on the back surface of one side edge portion of the substrate 111. Further, the other side edge portion of the substrate 111 is formed in a stepped portion 114 that has been stepped down to the back side by the thickness of the substrate 111 so that the side edge portion of the substrate 111 provided with the bonding convex portion 113 is disposed. In the stepped portion 114, a joint recess 115 is provided as a joint portion into which the joint projection 113 can be fitted. An inclined rib 116 is formed in the bonding recess 115 so as to be positioned on the protruding side of the bonding recess 115 as it is away from the substrate 111, and the tip of the inclined rib 116 forms one side edge of the strip 110. Forming.

補強材１２０は、長手方向に連続した帯板状の鋼板が断面略Ｗ字状に形成されたものであり、帯状体１００の複数本の補強リブ１１２にわたって装着されている。   The reinforcing member 120 is a strip-shaped steel plate that is continuous in the longitudinal direction and has a substantially W-shaped cross section. The reinforcing member 120 is mounted over the plurality of reinforcing ribs 112 of the strip-shaped body 100.

このような補強材付き帯状体１００は、ドラムＤに中空円筒状に巻き重ねられ、施工現場に輸送される。そして、施工現場において、補強材付き帯状体１００は、ドラムＤの内周側から引き出され、後述する巻き癖形成装置３を経て、基板１１１の裏面側、すなわち、補強リブ１１２などが立設された側が外周側になるように製管機２に供給され、その接合過程において、図２（ａ），（ｂ）に示すように、互いに隣接する２つの補強材付き帯状体１００，１００のうち、一方の補強材付き帯状体１００の接合凸部１１３に、他方の補強材付き帯状体１００の接合凹部１１５を内側（先行する補強材付き帯状体１００の内周側）から嵌め込むことにより、互いに隣接する補強材付き帯状体１００，１００を相互に接合して所定の管径の螺旋管Ｓ（図８参照）を製管することができる。   Such a band with reinforcing material 100 is wound around the drum D in a hollow cylindrical shape and transported to a construction site. Then, at the construction site, the belt-like body 100 with the reinforcing material is pulled out from the inner peripheral side of the drum D, and the back surface side of the substrate 111, that is, the reinforcing rib 112 is erected through the curl forming apparatus 3 described later. 2 is supplied to the pipe making machine 2 so that the outer side becomes the outer peripheral side, and in the joining process, as shown in FIGS. 2 (a) and 2 (b), of the two strips 100, 100 with reinforcing material adjacent to each other By fitting the joint concave portion 115 of the other band with reinforcing material 100 into the joint convex portion 113 of one band with reinforcing material 100 from the inside (the inner peripheral side of the preceding band with reinforcing material 100), The adjacent strips 100, 100 with reinforcing material can be joined to each other to produce a spiral tube S (see FIG. 8) having a predetermined tube diameter.

この際、先行する補強材付き帯状体１００の接合凸部１１３が設けられた基板１１１の側縁部に後続する補強材付き帯状体１００の段落ち部１１４が配置されるとともに、先行する補強材付き帯状体１００の接合凸部１１３が設けられた側の補強リブ１１２に後続する補強材付き帯状体１００の傾斜リブ１１６が係止される。   At this time, a stepped-down portion 114 of the band-like body 100 with the reinforcing material is disposed on the side edge of the substrate 111 provided with the joint convex portion 113 of the band-like body 100 with the preceding reinforcing material, and the preceding reinforcing material. The inclined rib 116 of the band with reinforcing material 100 following the reinforcing rib 112 on the side where the joint convex portion 113 of the band with band 100 is provided is locked.

一方、製管装置１は、更生対象の既設管Ｋに連通する一方のマンホールＭ１に配置された製管機２と、一方のマンホールＭ１側の地上においてドラムＤの近傍に設置された巻き癖形成装置３とから構成されている。   On the other hand, the pipe making apparatus 1 includes a pipe making machine 2 arranged in one manhole M1 communicating with an existing pipe K to be rehabilitated, and a curl formation installed near the drum D on the ground on the one manhole M1 side. The apparatus 3 is comprised.

製管機２は、図３および図４に示すように、所要の幅を有して略円環状をなすとともに、剛性を保持する取付フレーム２１と、取付フレーム２１の外周にかつ円周方向に向けて所定ピッチをもって回転自在に軸支され、螺旋管Ｓの内面に当接する複数の案内ローラ２２と、取付フレーム２１を介して設けられ、既に形成された螺旋管Ｓの接合部と新たに供給される補強材付き帯状体１００の接合部との接合箇所に回転自在に軸支されるとともに、補強材付き帯状体１００を挟着する外面（アウター）ローラ２４および内面（インナー）ローラ２５を有する接合機構２３とを備える。   As shown in FIGS. 3 and 4, the pipe making machine 2 has a required width and has a substantially annular shape, and has a mounting frame 21 that retains rigidity, an outer periphery of the mounting frame 21, and a circumferential direction. A plurality of guide rollers 22 rotatably supported at a predetermined pitch toward the inner surface of the spiral tube S and provided through the attachment frame 21 and newly supplied to the joint portion of the already formed spiral tube S. An outer surface (outer) roller 24 and an inner surface (inner) roller 25 that are rotatably supported at a joint portion with the joint portion of the band member 100 with the reinforcing material and sandwich the belt member 100 with the reinforcing member. And a joining mechanism 23.

ここで、外面ローラ２４は、その外周面が補強材付き帯状体１００の隣接する補強リブ１１２，１１２間において、その裏面、すなわち、螺旋管Ｓの外周面となる側の面に接して回転する。この際、外面ローラ２４の外周面にはローレット加工が施されており、補強材付き帯状体１００を滑ることなく送り出すことができる。また、内面ローラ２５は、例えば、鉄やプラスチックなどの比較的硬い素材によって円筒状に形成され、その外周面が補強材付き帯状体１００の平坦な内面、すなわち、螺旋管Ｓの内周面となる側の面に接触して回転する。   Here, the outer surface roller 24 rotates in contact with the back surface thereof, that is, the outer surface of the spiral tube S, between the adjacent reinforcing ribs 112 and 112 of the belt-like body 100 with the reinforcing material. . At this time, the outer peripheral surface of the outer roller 24 is knurled so that the belt-like body 100 with the reinforcing material can be fed out without slipping. Further, the inner surface roller 25 is formed in a cylindrical shape from a relatively hard material such as iron or plastic, and the outer peripheral surface thereof is a flat inner surface of the band-like body 100 with the reinforcing material, that is, the inner peripheral surface of the spiral tube S. Rotates in contact with the surface on the side.

この製管機２は、特許文献２で説明する所謂自走式に対応するものであり、マンホールＭ１内において接合機構２３が公転することで螺旋状の補強材付き帯状体１００から螺旋管Ｓを製管し、螺旋管ＳをマンホールＭ１内に残置するものである。   The pipe making machine 2 corresponds to the so-called self-propelled type described in Patent Document 2, and the spiral pipe S is removed from the belt-like body 100 with the spiral reinforcing material by revolving the joining mechanism 23 in the manhole M1. The tube is manufactured and the spiral tube S is left in the manhole M1.

なお、接合機構２３は図４の実施例に限定されず、外面ローラ２４を備えずに、内面ローラ２５と、取付フレーム２１に取り付けられて補強材付き帯状体１００を送る押し込みローラ（図示せず）とを備えるものであってもよい。   The joining mechanism 23 is not limited to the embodiment shown in FIG. 4, and does not include the outer roller 24, but includes an inner roller 25 and a push roller (not shown) that is attached to the attachment frame 21 and feeds the belt-like body 100 with the reinforcing material. ).

巻き癖形成装置３は、図５および図６に示すように、螺旋状に成形された鋼板製の巻き癖ガイド３１と、巻き癖ガイド３１の上流側に配置された第１送りローラ３２と、巻き癖ガイド３１の下流側に配置された第２送りローラ３３とからなり、支持フレーム３４に回転自在に設けられている。具体的には、支持フレーム３４に複数個の支持ローラ３５を介してリング状の回転フレーム３６が回転自在に支持されており、この回転フレーム３６に取付ブラケット３７を介して第１送りローラ３２および第２送りローラ３３が設けられるとともに、これらの第１送りローラ３２および第２送りローラ３３にわたって巻き癖ガイド３１が配設されており、支持フレーム３４に設けられた駆動ローラ３８および駆動モータ３９を介して回転フレーム３６を回転駆動させることができる。   As shown in FIGS. 5 and 6, the curl forming device 3 includes a spiral curl guide 31 made of a steel plate, a first feed roller 32 disposed on the upstream side of the curl guide 31, and The second feed roller 33 is arranged on the downstream side of the curl guide 31 and is rotatably provided on the support frame 34. Specifically, a ring-shaped rotary frame 36 is rotatably supported on the support frame 34 via a plurality of support rollers 35. The first feed roller 32 and the rotary frame 36 are attached to the rotary frame 36 via a mounting bracket 37. A second feed roller 33 is provided, and a curl guide 31 is provided over the first feed roller 32 and the second feed roller 33, and a drive roller 38 and a drive motor 39 provided on the support frame 34 are arranged. The rotary frame 36 can be driven to rotate.

巻き癖ガイド３１は、補強材付き帯状体１００によって製管される螺旋管Ｓの外径と略同等の曲率半径を有して断面略半円状に成形された螺旋板であって、連続的に供給された補強材付き帯状体１００を略半周にわたって螺旋板の内周面に沿わせることにより、補強材付き帯状体１００に巻き癖ガイド３１の曲率半径に相当する曲率半径の巻き癖を形成して螺旋状に塑性変形させるものである。すなわち、補強材付き帯状体１００の補強材１２０が、巻き癖ガイド３１の曲率半径に相当する曲率半径に塑性変形される。   The curl guide 31 is a spiral plate that has a radius of curvature substantially equal to the outer diameter of the spiral tube S manufactured by the belt-like body 100 with a reinforcing material and is formed in a substantially semicircular cross section. By forming the reinforcing material-equipped strip-like body 100 along the inner peripheral surface of the spiral plate over a substantially half circumference, a curl with a curvature radius corresponding to the curvature radius of the curling guide 31 is formed on the reinforcing material-like strip 100. Thus, it is plastically deformed in a spiral shape. That is, the reinforcing material 120 of the band-like body 100 with the reinforcing material is plastically deformed to a radius of curvature corresponding to the radius of curvature of the curl guide 31.

この場合、巻き癖ガイド３１の曲率半径としては、製管される螺旋管Ｓの外径と同等以下の曲率半径であってもかまわない。   In this case, the radius of curvature of the curl guide 31 may be a radius of curvature equal to or less than the outer diameter of the spiral tube S to be manufactured.

第１送りローラ３２は、第１内面ローラ３２２および第１外面ローラ３２３が組になった第１ピンチローラ３２１と、取付ブラケット３７に固定された歯車箱の歯車（図示せず）を介して第１ピンチローラ３２１を回転させる第１油圧モータ３２５とからなり、第１内面ローラ３２２の回転軸および第１外面ローラ３２３の回転軸は、補強材付き帯状体１００を螺旋状に供給するように、補強材付き帯状体１００を供給しようとするリード角に対して軸線方向が直交するように配置されて、第１油圧モータ３２５の出力軸とともにそれぞれ歯車箱３２４に回転自在に軸支されている。そして、第１油圧モータ３２５を回転駆動することにより、その出力軸、第１内面ローラ３２２の回転軸および第１外面ローラ３２３の回転軸にそれぞれ固定されて互いに噛み合う歯車を介して第１内面ローラ３２２および第１外面ローラ３２３を互いに逆方向に回転させ、第１内面ローラ３２２および第１外面ローラ３２３の間に補強材付き帯状体１００を挟み込んで巻き癖ガイド３１に向かって押し込むように送り出す。   The first feed roller 32 includes a first pinch roller 321 in which a first inner roller 322 and a first outer roller 323 are combined, and a gear box gear (not shown) fixed to the mounting bracket 37. A first hydraulic motor 325 that rotates one pinch roller 321, and the rotation shaft of the first inner surface roller 322 and the rotation shaft of the first outer surface roller 323 supply the belt-like body 100 with the reinforcing material in a spiral shape. Arranged so that the axial direction is orthogonal to the lead angle to which the band-like body 100 with the reinforcing material is supplied, and is rotatably supported by the gear box 324 together with the output shaft of the first hydraulic motor 325. Then, by rotating the first hydraulic motor 325, the first inner surface roller is connected to the output shaft, the first inner surface roller 322, and the first outer roller 323 through the gears fixed to and meshing with each other. 322 and the first outer roller 323 are rotated in opposite directions, and the belt-like body 100 with a reinforcing material is sandwiched between the first inner roller 322 and the first outer roller 323 and sent out toward the curl guide 31.

ここで、第１内面ローラ３２２は、補強材付き帯状体１００の幅に略相当する幅を有して鉄やプラスチックなどの比較的硬い素材によって円筒状に形成され、その外周面が補強材付き帯状体１００の平坦な内面、すなわち、螺旋管Ｓの内周面となる側の面に接触して回転するように外径が設定されている。   Here, the first inner surface roller 322 has a width substantially equivalent to the width of the band-like body 100 with the reinforcing material, is formed in a cylindrical shape by a relatively hard material such as iron or plastic, and the outer peripheral surface has the reinforcing material. The outer diameter is set so as to rotate in contact with the flat inner surface of the strip 100, that is, the surface on the side that becomes the inner peripheral surface of the spiral tube S.

また、第１外面ローラ３２３は、その外周面が補強材付き帯状体１００の隣接する補強リブ１１２，１１２間において、その裏面、すなわち、螺旋管Ｓの外周面となる側の面に接して回転する。   Further, the first outer roller 323 rotates with its outer peripheral surface in contact with the back surface, that is, the outer peripheral surface of the spiral tube S, between the adjacent reinforcing ribs 112 and 112 of the band-like body 100 with the reinforcing material. To do.

なお、第１外面ローラ３２３の外周面にはローレット加工が施されており、補強材付き帯状体１００を滑ることなく送り出す。   Note that the outer peripheral surface of the first outer roller 323 is knurled, and feeds the belt-like body 100 with the reinforcing material without slipping.

第２送りローラ３３は、第１送りローラ３２と同一の構造を有して巻き癖ガイド３１の下流側に配置されており、第２内面ローラ３３２および第２外面ローラ３３３が組になった第２ピンチローラ３３１と、第２ピンチローラ３３１を回転させる第２油圧モータ３３５とからなり、第２内面ローラ３３２の回転軸および第２外面ローラ３３３の回転軸は帯状体１０を螺旋状に巻回して供給するように、供給しようとするリード角に対して軸線方向が直交するように配置されて、第２油圧モータ３３５の出力軸とともにそれぞれ歯車箱に回転自在に軸支されている。そして、第２油圧モータ３３５を回転駆動することにより、その出力軸、第２内面ローラ３３２の回転軸および第２外面ローラ３３３の回転軸にそれぞれ固定されて互いに噛み合う歯車を介して第２内面ローラ３３２および第２外面ローラ３３３を互いに逆方向に回転させ、第２内面ローラ３３２および第２外面ローラ３３３の間に帯状体１０を挟み込んで巻き癖ガイド３１から引き取るように送り出す。   The second feed roller 33 has the same structure as the first feed roller 32 and is arranged on the downstream side of the curl guide 31. The second feed roller 33 includes a second inner roller 332 and a second outer roller 333 that form a pair. It comprises a two-pinch roller 331 and a second hydraulic motor 335 that rotates the second pinch roller 331. The rotation shaft of the second inner roller 332 and the rotation shaft of the second outer roller 333 wind the belt-like body 10 in a spiral shape. So that the axial direction is perpendicular to the lead angle to be supplied, and the output shaft of the second hydraulic motor 335 is rotatably supported by the gear box. Then, by rotating the second hydraulic motor 335, the second inner surface roller is connected to the output shaft, the second inner surface roller 332, and the second outer surface roller 333 through the gears fixed to and meshing with each other. 332 and the second outer surface roller 333 are rotated in directions opposite to each other, and the belt-like body 10 is sandwiched between the second inner surface roller 332 and the second outer surface roller 333 and is sent out so as to be taken out from the curling guide 31.

ここで、第２内面ローラ３３２は、第１内面ローラ３２２と同じ構成であり、第２外面ローラ３３３は、上記第１外面ローラ３２３と同じ形状および構成であり、第２外面ローラ３３３の外周面は、螺旋管Ｓの外周面となる側の面に接して回転する。   Here, the second inner roller 332 has the same configuration as the first inner roller 322, the second outer roller 333 has the same shape and configuration as the first outer roller 323, and the outer peripheral surface of the second outer roller 333. Rotates in contact with the surface of the spiral tube S that is the outer peripheral surface.

したがって、補強材付き帯状体１００を第１送りローラ３２を介して巻き癖ガイド３１に押し込んで、または、補強材付き帯状体１００を第２送りローラ３３を介して巻き癖ガイド３１から引き取って、巻き癖ガイド３１に沿って移動する補強材付き帯状体１００に巻き癖ガイド３１の曲率半径、すなわち、螺旋管Ｓの曲率半径と略同等の曲率半径の円弧状の巻き癖を連続的に形成して螺旋状に塑性変形させることができる。   Therefore, the band-like body 100 with the reinforcing material is pushed into the curl guide 31 via the first feed roller 32, or the band-like body 100 with the reinforcing material is taken out from the curl guide 31 via the second feed roller 33, An arcuate curl having a curvature radius substantially equal to the curvature radius of the spiral guide S, that is, the curvature radius of the spiral tube S, is continuously formed on the belt-like body 100 with the reinforcing material that moves along the spiral guide 31. And can be plastically deformed in a spiral shape.

また、巻き癖形成装置３は、駆動モータ３９が回転駆動すると、駆動ローラ３８が回転駆動し、回転フレーム３６は、支持ローラ３５に支持されて駆動ローラ３８の回転方向とは逆方向に回転する。これにより、回転フレーム３６に取付ブラケット３７を介して設けられた巻き癖ガイド３１、第１送りローラ３２および第２送りローラ３３も同方向に回転する。この場合、回転フレーム３６を補強材付き帯状体１００の供給方向とは反対方向に、かつ、供給速度と同速度で回転させることにより、公転する製管機２によって巻き回されることなく残置されて製管される螺旋管Ｓに対する螺旋状の補強材付き帯状体１００の送り出しに相対的な過不足がなくなり、補強材付き帯状体１００にねじれが発生することを防止できる。   In the curl forming apparatus 3, when the drive motor 39 is rotationally driven, the drive roller 38 is rotationally driven, and the rotary frame 36 is supported by the support roller 35 and rotates in a direction opposite to the rotational direction of the drive roller 38. . Thereby, the curl guide 31, the first feed roller 32, and the second feed roller 33 provided on the rotary frame 36 via the mounting bracket 37 also rotate in the same direction. In this case, the rotating frame 36 is left without being wound by the revolving pipe making machine 2 by rotating it in the direction opposite to the supply direction of the band-like body 100 with the reinforcing material and at the same speed as the supply speed. Thus, there is no relative excess or deficiency in the feeding of the spiral-shaped reinforcing member-like strip 100 to the spiral tube S to be manufactured, and the twisting of the reinforcing member-provided strip-like member 100 can be prevented.

すなわち、製管機２によって螺旋管Ｓを製管する際、回転フレーム３６が回転しないことによって、または、回転が遅すぎることによって、巻き回されることなく残置されて製管される螺旋管Ｓに対して螺旋状の補強材付き帯状体１００が過剰に送り出され、補強材付き帯状体１００にねじれが発生して巻き癖が裏返ったり、逆に回転フレーム３６の回転が早すぎることによって、巻き回されることなく残置されて製管される螺旋管Ｓに対して螺旋状の補強材付き帯状体１００の送り出しが少なくなり、螺旋状の補強材付き帯状体１００の巻き癖径が次第に小さくなって補強材付き帯状体１００が変形することを防止できる。   That is, when the spiral pipe S is produced by the pipe making machine 2, the spiral pipe S that is left without being wound due to the rotation frame 36 not rotating or being rotated too slowly is produced. On the other hand, when the belt-like body 100 with the reinforcing material is excessively fed out and the belt-like body 100 with the reinforcing material is twisted and the curl is turned over, or conversely, the rotation of the rotating frame 36 is too fast. The spiral-shaped reinforcing member-equipped strip-like body 100 is less fed out to the spiral tube S that is left and turned without being turned, and the winding diameter of the spiral-like reinforcing member-like strip-like body 100 becomes gradually smaller. Thus, deformation of the band-like body 100 with the reinforcing material can be prevented.

ここで、ドラムＤの内周側から補強材付き帯状体１００を引き出す際、ドラムＤの配置に伴う回転方向によって補強材付き帯状体１００の供給方向（螺旋方向）が異なるため、ドラムＤから引き出される補強材付き帯状体１００は、一方の送りローラに導かれる。したがって、補強材付き帯状体１００が導かれた入口側となる送りローラが第１送りローラとなる。すなわち、実施例においては、図５、図６の右側の送りローラに補強材付き帯状体１００が導かれることにより、入口側の送りローラ、すなわち、第１送りローラ３２となっている。   Here, when pulling out the belt-like body 100 with the reinforcing material from the inner peripheral side of the drum D, the supply direction (spiral direction) of the belt-like body 100 with the reinforcing material differs depending on the rotation direction accompanying the arrangement of the drum D. The reinforcing material-attached belt-like body 100 is guided to one feed roller. Therefore, the feed roller on the entrance side from which the belt-like body 100 with the reinforcing material is guided becomes the first feed roller. That is, in the embodiment, the belt-like body 100 with the reinforcing material is guided to the feed roller on the right side of FIGS. 5 and 6, thereby forming the feed roller on the inlet side, that is, the first feed roller 32.

なお、このような巻き癖形成装置３において、一方を送りローラ、すなわち、ピンチローラおよびピンチローラを駆動させる油圧モータで構成すれば、他方はピンチローラで対応できる。すなわち、第１ピンチローラ３２１を油圧モータおよび歯車を介して回転駆動させる場合は、第１ピンチローラ３２１に補強材付き帯状体１００を挟み込んで巻き癖ガイド３１に押し込み、また、第２ピンチローラ３３１を油圧モータおよび歯車を介して回転駆動させる場合は、第２ピンチローラ３３１に補強材付き帯状体１００を挟み込んで巻き癖ガイド３１から引き取るものである。これにより、巻き癖ガイド３１に押し込まれた後、第２ピンチローラ３３１を経て巻き癖形成装置３を通過した補強材付き帯状体１００、あるいは、第１ピンチローラ３２１および巻き癖ガイド３１を経て巻き癖ガイド３１から引き取られた補強材付き帯状体１００は、巻き癖ガイド３１の曲率半径、すなわち、螺旋管Ｓの曲率半径と略同等の曲率半径の円弧状の巻き癖が連続的に形成されて螺旋状に塑性変形される。   In such a curl forming apparatus 3, if one is constituted by a feed roller, that is, a pinch roller and a hydraulic motor for driving the pinch roller, the other can be handled by a pinch roller. That is, when the first pinch roller 321 is rotationally driven via a hydraulic motor and a gear, the belt-like body 100 with the reinforcing material is sandwiched between the first pinch roller 321 and pushed into the curling guide 31, and the second pinch roller 331 is used. Is rotated through a hydraulic motor and a gear, the band-like body 100 with a reinforcing material is sandwiched between the second pinch rollers 331 and pulled from the curl guide 31. As a result, after being pushed into the curl guide 31, it passes through the second pinch roller 331 and passes through the curl forming device 3, or through the first pinch roller 321 and the curl guide 31. The belt-like body 100 with the reinforcing material taken out from the scissors guide 31 is formed by continuously forming an arcuate curl having a curvature radius substantially equal to the curvature radius of the spiral guide S, that is, the curvature radius of the spiral tube S. It is plastically deformed in a spiral shape.

また、巻き癖形成装置３の油圧モータ３２５，３３５への油圧配管は、ドラムＤの中空円筒部を経てスイベルジョイントを介して接続される。これにより、回転フレーム３６の回転による油圧配管の絡みつきを防止することができる。また、油圧モータに代えて電動モータを利用することもできるが、この場合も、給電ケーブルの絡みつきを防止するため、ドラムＤを中空円筒部を経た後、スイベルジョイントを介して接続される。一方、バッテリ内蔵のモータやパワーユニット付き油圧モータを採用すれば、配線や配管の絡みつきを防止することができる。   The hydraulic piping to the hydraulic motors 325 and 335 of the curl forming apparatus 3 is connected via a swivel joint via the hollow cylindrical portion of the drum D. Thereby, the entanglement of the hydraulic piping due to the rotation of the rotating frame 36 can be prevented. Although an electric motor can be used instead of the hydraulic motor, in this case as well, the drum D is connected via a swivel joint after passing through the hollow cylindrical portion in order to prevent the feeding cable from being entangled. On the other hand, if a motor with a built-in battery or a hydraulic motor with a power unit is adopted, it is possible to prevent tangling of wiring and piping.

このような巻き癖形成装置３によって予め巻き癖をつけておくことにより、製管機２による製管作業がきわめてスムーズとなる。   By making the curl with the curl forming apparatus 3 in advance, the pipe making operation by the pipe making machine 2 becomes extremely smooth.

次に、このように構成された製管装置１を用いて既設管Ｋを更生する施工手順について説明する。   Next, a construction procedure for rehabilitating the existing pipe K using the pipe making apparatus 1 configured as described above will be described.

施工対象の既設管Ｋには、所定スパン毎にマンホールが設けられており、施工対象領域の一端に連通する一方のマンホール（以下、発進側マンホールＭ１という。）から他端に連通する他方のマンホール（以下、到達側マンホールＭ２という。）にかけて既設管Ｋに螺旋管Ｓを製管して敷設し、更生するものとする。   The existing pipe K to be constructed is provided with a manhole for each predetermined span, and the other manhole communicated with the other end from one manhole communicated with one end of the construction target region (hereinafter referred to as a starting side manhole M1). (Hereinafter, referred to as reaching-side manhole M2), a spiral tube S is formed on the existing tube K, laid, and rehabilitated.

更生作業の前作業として、先ず既設管Ｋ内に付着した塊物や取付管の突出部などを除去し、浸入水の仮止水を行う。また、製管機２を公転させるに際して、接合機構２３が接触しないように、発進側マンホールＭ１内をはつる作業も行っておく。   As a preparatory work for the rehabilitation work, first, the lump attached to the existing pipe K, the protruding part of the attachment pipe, and the like are removed, and temporary stoppage of the intrusion water is performed. Further, when the pipe making machine 2 is revolved, an operation of hanging the inside of the start side manhole M1 is also performed so that the joining mechanism 23 does not come into contact.

発進側マンホールＭ１側の地上には、補強材付き帯状体１００が中空円筒状に巻き重ねられたドラムＤ（回転台付き）が配置されるとともに、ドラムＤの近傍に巻き癖形成装置３が設置され、さらに、図示しない発電機および油圧ユニットからなる動力ユニットが設置される。また、製管機２が発進側マンホール内にクレーンなどを利用して搬入された後、動力ユニットからの油圧配管を巻き癖形成装置３の各油圧モータ３２５，３３５，３９および製管機２における接合機構２３を駆動する油圧モータにそれぞれ接続する。   On the ground on the start side manhole M1 side, a drum D (with a turntable) in which a belt-like body 100 with a reinforcing material is wound in a hollow cylindrical shape is arranged, and a curl forming device 3 is installed in the vicinity of the drum D. Further, a power unit including a generator and a hydraulic unit (not shown) is installed. In addition, after the pipe making machine 2 is carried into the starting side manhole using a crane or the like, the hydraulic pipes from the power unit are wound around the hydraulic motors 325, 335, 39 and the pipe making machine 2 Each is connected to a hydraulic motor that drives the joining mechanism 23.

一方、到達側マンホールＭ２側の地上には、後述するように、螺旋管Ｓを既設管Ｋ内に牽引するためのウインチ４が設置されており、ウインチドラムに巻き取られたワイヤやロープなどの索条体４１が、発進側マンホールＭ１から到達側マンホールＭ２にかけて挿通された通線材ｒ（図７参照）を利用して発進側マンホールＭ１側に引き込まれている。   On the other hand, as will be described later, a winch 4 for pulling the spiral tube S into the existing tube K is installed on the ground on the arrival side manhole M2 side, such as a wire or a rope wound around the winch drum. The striated body 41 is drawn to the start side manhole M1 side by using a wire rod r (see FIG. 7) inserted from the start side manhole M1 to the arrival side manhole M2.

準備作業が終了すれば、ドラムＤを軸心回りに回転させながら、補強材付き帯状体１００をその内周側から引き出し、巻き癖形成装置３の第１送りローラ３２、巻き癖ガイド３１、第２送りローラ３３を通して介して巻き癖をつけた後、塑性変形された補強材付き帯状体１００を発進側マンホールＭ１内に引き入れる。次いで、発進側マンホールＭ１の下部において、補強材付き帯状体１００の先端を製管機２の接合機構２３に導入する。   When the preparatory work is completed, the belt-like body 100 with the reinforcing material is pulled out from the inner peripheral side while rotating the drum D about the axis, and the first feed roller 32, the curl guide 31 of the curl forming device 3, the first After winding the curl through the two-feed roller 33, the plastically deformed band with reinforcing material 100 is drawn into the start-side manhole M1. Next, at the lower part of the starting side manhole M1, the tip of the band-like body 100 with the reinforcing material is introduced into the joining mechanism 23 of the pipe making machine 2.

そして、発進側マンホールＭ１内において、製管機２をクレーンなどを利用して吊り上げた状態で、補強材付き帯状体１００を接合機構２３を正回転させて送り出し、約２周巻回した後、製管された螺旋管Ｓの管径を調整するため、補強材付き帯状体１００を絞り込んで案内ローラ２２に抱きつかせる。具体的には、詳細には図示しないが、補強材付き帯状体１００の先端に釘を打ち込んでストッパとし、釘を接合機構２３に当接させて接合機構２３を逆回転させ、製管機２に巻き回した補強材付き帯状体１００を引き絞り、製管機２の取付フレーム２１の外周に対応する内径、すなわち、既設管Ｋの内径よりも若干小径に形成する。次いで、補強材付き帯状体１００をさらに４〜７周ほど製管機２の取付フレーム２１の回りに巻き回して、既設管Ｋの内径よりも僅かに小径の短い螺旋管Ｓを製管する。   Then, in the starting side manhole M1, in a state where the pipe making machine 2 is lifted by using a crane or the like, the belt-like body 100 with the reinforcing material is sent out by rotating the joining mechanism 23 in the forward direction, and is wound about twice. In order to adjust the pipe diameter of the manufactured spiral pipe S, the band-like body 100 with the reinforcing material is squeezed and held by the guide roller 22. Specifically, although not shown in detail, a nail is driven into the tip of the band-like body 100 with the reinforcing material to serve as a stopper, the nail is brought into contact with the joining mechanism 23, and the joining mechanism 23 is rotated in the reverse direction. The belt-like body 100 with the reinforcing material wound around is drawn and formed to have an inner diameter corresponding to the outer periphery of the mounting frame 21 of the pipe making machine 2, that is, slightly smaller than the inner diameter of the existing pipe K. Next, the belt-like body 100 with the reinforcing material is further wound around the mounting frame 21 of the pipe making machine 2 for about 4 to 7 laps, thereby producing a spiral pipe S having a slightly smaller diameter than the inner diameter of the existing pipe K.

また、発進側マンホールＭ１に引き込まれた索条体４１の先端を螺旋管Ｓの先頭部あるいは先頭部の内周面に固定する。例えば、螺旋管Ｓの内周面に２つ以上の玉掛け部材を離間して固定した後、複数本の玉掛け部材を束ねて索条体４１の先端に取り付けたシャックルなどを利用して接続すればよい。この際、螺旋管Ｓの先端に、先端側の外面が球面、円錐面あるいは円錐台面などの曲面に形成された先端キャップ（図示せず）を設けることが好ましい。このような先端キャップを設けることにより、後述するウインチ４による螺旋管Ｓの牽引時において、既設管Ｋに段差などがあっても、先端キャップの先端側外面が既設管Ｋの段差などを乗り越えることができ、螺旋管Ｓを円滑に牽引することができる。   Further, the leading end of the cable body 41 drawn into the starting side manhole M1 is fixed to the leading portion of the spiral tube S or the inner peripheral surface of the leading portion. For example, after two or more sling members are fixed to the inner peripheral surface of the spiral tube S and then connected by using a shackle attached to the tip of the cable body 41 by bundling a plurality of sling members. Good. At this time, it is preferable to provide a tip cap (not shown) whose outer surface on the tip side is formed into a curved surface such as a spherical surface, a conical surface or a truncated cone surface at the tip of the spiral tube S. By providing such a tip cap, when the spiral tube S is pulled by the winch 4 to be described later, even if there is a step in the existing tube K, the outer surface on the tip side of the tip cap gets over the step in the existing tube K. And the helical tube S can be pulled smoothly.

なお、これらの作業は、必ずしも発進側マンホールＭ１内で行う必要はなく、発進側マンホールＭ１の口径によっては、地上で行うこともできる。   Note that these operations are not necessarily performed in the start side manhole M1, and may be performed on the ground depending on the diameter of the start side manhole M1.

次いで、製管機２に巻き回した補強材付き帯状体１００（短い螺旋管Ｓ）の先頭部に索条体４１を連結したならば、短い螺旋管Ｓの先端部を発進側マンホールＭ１内の既設管口に吊り下ろした後（図７参照）、発進側マンホールＭ１内で製管機２の接合機構２３を正回転させる。これにより、製管機２の接合機構２３は、既設管Ｋに支持された短い螺旋管Ｓに対して補強材付き帯状体１００の相対的な送り出し方向となる逆方向に螺旋管Ｓの軸心回りに回転（公転）し、螺旋管Ｓを製管する。この場合、製管機２が螺旋管Ｓを製管する（進行しようとする）方向は、更生対象の既設管Ｋとは反対方向となる。   Next, if the rope body 41 is connected to the leading end of the reinforcing band 100 (short spiral tube S) wound around the pipe making machine 2, the tip of the short spiral tube S is placed in the start-side manhole M1. After suspending from the existing pipe opening (see FIG. 7), the joining mechanism 23 of the pipe making machine 2 is rotated forward in the starting side manhole M1. Thereby, the joining mechanism 23 of the pipe making machine 2 has the axial center of the spiral tube S in the opposite direction to the relative delivery direction of the band-like body 100 with the reinforcing material with respect to the short spiral tube S supported by the existing tube K. Rotate around (revolve) to make the spiral tube S. In this case, the direction in which the pipe making machine 2 pipes the spiral pipe S (will proceed) is opposite to the existing pipe K to be rehabilitated.

この製管作業と同時進行にてウインチ４を駆動させ、螺旋管Ｓの軸心方向への形成速さとほぼ同じ速さで、索条体４１により螺旋管Ｓを既設管Ｋ内に牽引する。これにより、製管機２が螺旋管Ｓを取り外さない状態で、かつ、発進側マンホールＭ１内の定位置から移動しないまま、製管された螺旋管Ｓが巻き回されることなく既設管Ｋ内に挿入される（図８参照）。特許文献１について上述したように、螺旋管Ｓが回転しながら既設管Ｋ内に挿入されると、既設管Ｋ内面との接触により接合部同士がずれて拡径してしまい、既設管Ｋの曲り部や段差部などがある場合、あるいは、長い既設管Ｋの更生は困難であるが、螺旋管Ｓは巻き回されることなく既設管Ｋ内に挿入されることにより、この欠点は解消され、例えば、５０ｍ以上の既設管Ｋ内にも螺旋管Ｓを製管して挿入することができる。   The winch 4 is driven simultaneously with the pipe making operation, and the spiral pipe S is pulled into the existing pipe K by the cable body 41 at a speed almost the same as the speed of forming the spiral pipe S in the axial direction. As a result, the pipe making machine 2 does not remove the spiral pipe S and does not move from the fixed position in the starting side manhole M1, and the piped spiral pipe S is not wound around the existing pipe K. (See FIG. 8). As described above with respect to Patent Document 1, when the helical tube S is inserted into the existing tube K while rotating, the joints are displaced from each other by the contact with the inner surface of the existing tube K and the diameter of the existing tube K is increased. When there is a bent part or a stepped part, or rehabilitation of a long existing pipe K is difficult, this drawback is eliminated by inserting the helical pipe S into the existing pipe K without being wound. For example, the spiral tube S can be formed and inserted into an existing tube K of 50 m or longer.

また、製管機２が既設管Ｓ内に進入せずに螺旋管Ｓを既設管Ｋ内に挿入できるので、接合機構２３の外面ローラ２４が既設管Ｋの内径よりも突出していても、既設管Ｋに対しほとんど隙間の無い螺旋管Ｓを製管して挿入できる。   Further, since the pipe making machine 2 can be inserted into the existing pipe K without entering the existing pipe S, even if the outer surface roller 24 of the joining mechanism 23 protrudes from the inner diameter of the existing pipe K, the existing pipe S can be installed. A spiral tube S with almost no gap can be formed and inserted into the tube K.

しかも、帯状体１１０に長手方向に連続する補強材１２０が装着された補強材付き帯状体１００を用いる場合にであっても、補強材１２０に円弧状の巻き癖をつけながらマンホールＭ１内に引き入れるため、口径の小さなマンホールＭ１にも容易に引き入れることができるとともに、公転する製管機２の接合機構２３の軌道に対応させることができ、製管作業をスムーズに行うことができる。また、補強材１２０によって剛性の大きな螺旋管Ｓを製管できる。   In addition, even when the reinforcing material-equipped belt-like body 100 in which the reinforcing material 120 continuous in the longitudinal direction is attached to the belt-like body 110, the reinforcing material 120 is drawn into the manhole M1 while attaching an arcuate curl. Therefore, it can be easily drawn into the manhole M1 having a small diameter, and can correspond to the orbit of the joining mechanism 23 of the revolving pipe making machine 2, so that the pipe making work can be performed smoothly. In addition, the spiral pipe S having high rigidity can be formed by the reinforcing material 120.

なお、製管機２が螺旋管Ｓを製管する場所である「発進側マンホールＭ１内」とは、製管機２の全体がマンホールＭ１内に配置される場合の他、製管機２が既設管Ｋ内とマンホールＭ１内の両方にわたって配置される場合も含むものとする。   It should be noted that “in the start side manhole M1”, where the pipe making machine 2 produces the spiral pipe S, means that the pipe making machine 2 is arranged in the manhole M1 in addition to the case where the entire pipe making machine 2 is arranged in the manhole M1. The case where it is arranged over both the existing pipe K and the manhole M1 is also included.

製管機２の接合機構２３が外面ローラ２４を備えていない構造であれば、外径方向に突出する部位がないため、製管する螺旋管Ｓが既設管Ｋとの間にほとんど隙間がなくても、製管機２が既設管Ｋ内に進入することも可能である。   If the joining mechanism 23 of the pipe making machine 2 is not provided with the outer roller 24, there is no portion projecting in the outer diameter direction, so there is almost no gap between the spiral pipe S to be piped and the existing pipe K. However, the pipe making machine 2 can also enter the existing pipe K.

そして、図８の状態からさらに螺旋管Ｓを製管して既設管Ｋ内に挿入し、到達側マンホールＭ２内に達したならば、補強材付き帯状体１００を製管機２の前段側で切断し、その端部処理を行って製管機２を螺旋管Ｓから取り外すとともに、索条体４１を螺旋管Ｓから取り外した後、図９に示すように、既設管Ｋと螺旋管Ｓの両端部との隙間にシール部材１１を巻設して隙間に下水などが浸入しないように密封し、かつ、シール部材１１，１１の夫々にパイプ１２を取り付けて、既設管Ｋ内とマンホールＭ１，Ｍ２とを連通する。一方のパイプ１２は、裏込め材（自立モルタル）を注入するプラント車からの供給配管が接続されて隙間に裏込め材を流入させるためのものであり、他方のパイプ１２は、隙間内の空気抜きをしつつ供給された裏込め材を溢れ出させるためのものである。   Then, when the spiral tube S is further piped from the state of FIG. 8 and inserted into the existing pipe K and reaches the reaching-side manhole M2, the belt-like body 100 with the reinforcing material is placed on the upstream side of the pipe making machine 2. After cutting and removing the pipe making machine 2 from the spiral tube S and removing the cable body 41 from the spiral tube S, as shown in FIG. A seal member 11 is wound around the gap between both ends, sealed so that sewage or the like does not enter the gap, and a pipe 12 is attached to each of the seal members 11, 11, and the inside of the existing pipe K and the manhole M1, Communicate with M2. One pipe 12 is connected to a supply pipe from a plant vehicle for injecting a backfill material (self-supporting mortar) to allow the backfill material to flow into the gap, and the other pipe 12 is for venting air in the gap. It is for overflowing the backfilling material supplied while doing.

次いで、図１０に示すように、螺旋管Ｓが裏込め材による浮力で浮き上がるのを防止するため、螺旋管Ｓにウエイト１３を挿通する。例えば、螺旋管Ｓ内にチェーンを挿入する。さらに、螺旋管Ｓ内に流水を貯えて浮力に抗するため、螺旋管Ｓの下流端には、止水栓１４を装着することが好ましい。この場合、流水が得られない場合には、螺旋管Ｓの両端部に止水栓１４を装着して螺旋管Ｓの内部に流水を貯留するようにすればよい。   Next, as shown in FIG. 10, a weight 13 is inserted into the spiral tube S in order to prevent the spiral tube S from being lifted by buoyancy due to the backfill material. For example, a chain is inserted into the spiral tube S. Furthermore, in order to store running water in the spiral tube S and resist buoyancy, it is preferable to attach a water stopcock 14 to the downstream end of the spiral tube S. In this case, when running water cannot be obtained, stop cocks 14 are attached to both ends of the helical tube S so that the running water is stored inside the helical tube S.

従来では、例えば、螺旋管Ｓの中間部位を穿孔し、螺旋管Ｓの内部を通るような支持棒を孔に差し込んで既設管Ｋに支持して浮上防止を行っていたが、小口径の螺旋管Ｓの場合は内部に入ることができない。これに対し、このウエイト１３は螺旋管Ｓの端部から挿入し、取り外すことを容易に行うことができ、しかも、穿孔作業などが不要であり作業性がよい。   Conventionally, for example, an intermediate portion of the spiral tube S is perforated, and a support rod passing through the inside of the spiral tube S is inserted into the hole and supported by the existing tube K to prevent floating. In the case of the tube S, it cannot enter the inside. On the other hand, the weight 13 can be easily inserted and removed from the end of the spiral tube S, and the drilling operation is not necessary and the workability is good.

次に、図１１に示すように、プラント車から注入配管と注入用のパイプ１２を介して既設管Ｋと螺旋管Ｓの隙間に裏込め材を注入し、充填し終えたらパイプ１２を取り外す。そして、裏込め材が固化して形成された充填体１５により螺旋管Ｓが既設管Ｋ内で固定されたならば、螺旋管Ｓのうち，マンホールＭ１，Ｍ２内への突出部分を切除して作業完了となる（図１２参照）。   Next, as shown in FIG. 11, the backfill material is injected into the gap between the existing pipe K and the spiral pipe S from the plant vehicle via the injection pipe and the injection pipe 12, and the pipe 12 is removed when the filling is completed. Then, if the spiral tube S is fixed in the existing tube K by the filler 15 formed by solidifying the backfill material, the projecting portions of the spiral tube S into the manholes M1 and M2 are cut off. The work is completed (see FIG. 12).

前述した実施形態においては、ウインチ４を利用して螺旋管Ｓを索条体４１で牽引し、既設管Ｋ内に挿入する場合を例示したが、設計変更自由である。   In the above-described embodiment, the case where the spiral tube S is pulled by the cable body 41 using the winch 4 and is inserted into the existing tube K is illustrated, but the design can be freely changed.

例えば、発進側マンホールＭ１内に、製管中の製管機２を更生対象の既設管Ｋの方向へ押圧する装置を設置する。そして、製管機２が公転しながら螺旋管Ｓを形成する間中この製管機２を既設管Ｋ内へと押圧することで、製管機２はマンホールＭ１内の定位置を動かずに、形成された螺旋管Ｓのみを既設管Ｋ内に挿入できる。あるいは、マンホールＭ１内において、製管機２で形成された螺旋管Ｓを既設管Ｋ内に押圧しながら挿入してもよい。   For example, a device for pressing the pipe making machine 2 during pipe making in the direction of the existing pipe K to be rehabilitated is installed in the starting side manhole M1. And while the pipe making machine 2 revolves and forms the spiral tube S, the pipe making machine 2 is pressed into the existing pipe K so that the pipe making machine 2 does not move in a fixed position in the manhole M1. Only the formed spiral tube S can be inserted into the existing tube K. Alternatively, the spiral tube S formed by the pipe making machine 2 may be inserted into the existing tube K while being pushed into the manhole M1.

また、図１０で説明した螺旋管Ｓの浮上防止については、ウエイト１３によるものに限定されない。例えば、図１３に示すように、螺旋管Ｓの挿入に先立って施工区間にわたって既設管Ｋの管頂部に筒状部材１６を配置した後、螺旋管Ｓを製管しつつ挿入し、次いで、筒状部材１６にセメント系材料を注入して固化させ、セメント系材料が固化した拡径状態の筒状部材１６によって螺旋管Ｓを既設管Ｋの管底部に接触するように支持した後、既設管Ｋと螺旋管Ｓとの隙間に裏込め材を充填する。この際、裏込め材の充填による螺旋管Ｓの浮き上がりをセメント系材料が固化した拡径状態の筒状部材１６を介して既設管Ｋに支持することで防止する。裏込め材としての自立モルタルが比重が大きいため、上述したウエイト１３としてのチェーンでは浮上を防止できない場合に有効である。   Further, the prevention of the floating of the spiral tube S described with reference to FIG. For example, as shown in FIG. 13, after the cylindrical member 16 is disposed on the top of the existing pipe K over the construction section prior to the insertion of the helical pipe S, the helical pipe S is inserted while being formed, The cemented material is injected into the cylindrical member 16 and solidified, and the spiral tube S is supported by the expanded cylindrical member 16 in which the cemented material is solidified so as to contact the tube bottom of the existing tube K, and then the existing tube The backfill material is filled in the gap between K and the spiral tube S. At this time, lifting of the spiral tube S due to the filling of the backfilling material is prevented by supporting the existing tube K via the expanded cylindrical member 16 in which the cementitious material is solidified. Since the self-supporting mortar as the backfilling material has a large specific gravity, it is effective when the above-described chain as the weight 13 cannot prevent floating.

また、製管機２としては、螺旋管Ｓを既設管Ｋに支持することで、マンホール内に宙に浮いた状態（マンホールＭ１内に設置されない状態）で製管する実施例のものに限定されず、接合機構を固定基台に回転可能に枢支した構成として、固定基台をマンホールＭ１内に設置した状態で製管するのもよい。   Further, the pipe making machine 2 is limited to that of the embodiment in which the spiral pipe S is supported by the existing pipe K, and the pipe is produced in a state of being suspended in the manhole (not installed in the manhole M1). Instead, as a configuration in which the joining mechanism is pivotally supported on the fixed base, pipes may be manufactured in a state where the fixed base is installed in the manhole M1.

巻き癖形成装置３を使用せずに、ドラムＤから引き出した補強材付き帯状体１００を製管機２に直接送って製管作業を行うことも可能であるが、補強材付き帯状体１００には補強材１２０が装着されており、剛性が大きくマンホールＭ１内にて製管機２のみで螺旋状に製管するのが困難なので、上述のように、ドラムＤから引き出した補強材付き帯状体１００に、目標とする管径の螺旋管Ｓに対応する曲率半径の巻き癖を予め付けることにより、マンホールＭ１内での製管機２による製管作業をスムーズに行うことができる。   It is possible to perform the pipe making operation by directly sending the reinforcing material strip 100 drawn from the drum D to the pipe making machine 2 without using the curl forming apparatus 3. Is provided with a reinforcing material 120 and has a large rigidity and it is difficult to make a spiral pipe only by the pipe making machine 2 in the manhole M1. By attaching a winding rod having a radius of curvature corresponding to the spiral pipe S having a target pipe diameter to 100 in advance, the pipe making operation by the pipe making machine 2 in the manhole M1 can be performed smoothly.

また、補強材付き帯状体１００を用いて螺旋管Ｓを製管する場合を説明したが、補強材１２０が装着されていない帯状体１１０のみを用いて螺旋管を製管することもできる。この場合、既設管Ｋの口径によって巻き癖を形成する必要があるときには、帯状体１１０を加熱して巻き癖を賦形すればよい。例えば、帯状体１１０を蒸気などにより加熱して軟化させ、所定の曲率半径の円弧状に変形させた後、冷却することで巻き癖を形成するようにすればよい。   Moreover, although the case where the spiral tube S was manufactured using the strip | belt body 100 with a reinforcing material was demonstrated, a spiral tube can also be manufactured using only the strip | belt-shaped body 110 with which the reinforcing material 120 is not mounted | worn. In this case, when it is necessary to form the curl according to the diameter of the existing pipe K, the curb can be shaped by heating the strip 110. For example, the band 110 may be softened by heating with steam or the like, deformed into an arc having a predetermined radius of curvature, and then cooled to form the curl.

さらに、補強材付き帯状体１００の帯状体としては、図１に示したものに限定されない。例えば、図１４に示すように、帯状体は、主材（主帯状体）１３０と嵌合材１４０との組み合わせよりなり、隣接する主帯状体１３０，１３０が嵌合材１４０を介して接合されるものであってもかまわない。   Furthermore, the belt-like body of the belt-like body 100 with the reinforcing material is not limited to the one shown in FIG. For example, as shown in FIG. 14, the belt-like body is a combination of a main material (main belt-like body) 130 and a fitting material 140, and the adjacent main belt-like bodies 130 and 130 are joined via the fitting material 140. It may be a thing.

主帯状体１３０は複数本の突条１３１を有し、その両端部には接合部１３２Ａ，１３２Ｂが形成され、該接合部１３２Ａ，１３２Ｂに嵌合溝１３３が形成されている。また、嵌合材１４０は主帯状体１３０の嵌合溝１３３に嵌まり込む嵌合突条１４１を有している。そして、接合時において、相並べられた主帯状体１３０，１３０の接合部１３２Ａ，１３２Ｂ間に跨って嵌合材１４０が接合される。   The main belt-like body 130 has a plurality of protrusions 131, joint portions 132A and 132B are formed at both ends thereof, and fitting grooves 133 are formed in the joint portions 132A and 132B. In addition, the fitting member 140 has a fitting protrusion 141 that fits into the fitting groove 133 of the main belt-like body 130. At the time of joining, the fitting material 140 is joined across the joining portions 132A and 132B of the main belt-like bodies 130 and 130 arranged in phase.

また、前述した製管装置１に代えて、図１５に示す製管装置１を用いて螺旋管Ｓを製管し、既設管Ｋを更生するようにしてもよい。具体的には、製管装置１は、支持架台５に巻き癖装置３および製管機６を一体に設けて構成されているものである。   Moreover, it replaces with the pipe manufacturing apparatus 1 mentioned above, and the spiral pipe S may be manufactured using the pipe manufacturing apparatus 1 shown in FIG. 15, and the existing pipe K may be renovated. Specifically, the pipe making apparatus 1 is configured by integrally providing a curl device 3 and a pipe making machine 6 on a support base 5.

なお、巻き癖形成装置３については、前述したものと同一であり、同一の部材に同一の符号を付して詳細な説明を省略する。   The curl forming apparatus 3 is the same as that described above, and the same reference numerals are assigned to the same members, and detailed description thereof is omitted.

ただし、この場合、巻き癖形成装置３は、製管機６と一体に設けられることから、補強材付き帯状体１００を巻き癖ガイド３１に向かって押し込む第１送りローラ３２、または、補強材付き帯状体１００を巻き癖ガイド３１から引き取る第２送りローラ３３のいずれか一方が設けられればよい。   However, in this case, since the curl forming device 3 is provided integrally with the pipe making machine 6, the first feed roller 32 that pushes the band-like body 100 with the reinforcing material toward the curling guide 31 or with the reinforcing material. Any one of the second feed rollers 33 for pulling the belt-like body 100 from the curl guide 31 may be provided.

また、巻き癖ガイド３１として、弧状の螺旋板で例示したが、螺旋板に限定するものではなく、例えば、詳細には図示しないが、螺旋管Ｓの曲率半径と略同等もしくは同等以下の曲率半径の弧状の螺旋面または円筒面に外接する複数個の回転ローラを螺旋方向あるいは円周方向に間隔をおいて回転自在に軸支して巻き癖ガイド３１を形成してもよい。   Moreover, although the arcuate spiral plate 31 is exemplified as the curl guide 31, it is not limited to the spiral plate. For example, although not shown in detail, the curvature radius is substantially equal to or less than the curvature radius of the spiral tube S. The curling guide 31 may be formed by pivotally supporting a plurality of rotating rollers circumscribing the arcuate spiral surface or cylindrical surface of the arc-shaped spiral surface or cylindrical surface so as to be rotatable in the spiral direction or the circumferential direction.

製管機６は、補強材付き帯状体１００を軸心が略水平となるように連続的に螺旋状に巻き回すとともに、互いに隣接する補強材付き帯状体１００の幅方向の側縁部同士を接合させて、連続的に螺旋管Ｒを製管するものであり、製管された螺旋管Ｓは、支持架台５に対し相対的に回転しつつ軸心方向に押し出される。   The pipe making machine 6 continuously spirally winds the band-like body 100 with the reinforcing material so that the axial center is substantially horizontal, and the side edges in the width direction of the band-like bodies 100 with the reinforcing material adjacent to each other. The helical tube R is continuously produced by joining, and the produced helical tube S is pushed out in the axial direction while rotating relative to the support frame 5.

製管機６は、隣接する螺旋状の補強材付き帯状体１００，１００を互いに接合する接合機構６１と、隣接する螺旋状の補強材付き帯状体１００，１００が接合機構６１によって互いに接合されて製管された螺旋管Ｓを案内するガイドフレーム６２とから構成され、前述した巻き癖形成装置３の後段に配設されている。   The pipe making machine 6 includes a joining mechanism 61 that joins adjacent strips 100 and 100 with spiral reinforcing material to each other, and a joining mechanism 61 that joins adjacent strips 100 and 100 with spiral reinforcing material. The guide frame 62 is configured to guide the spiral tube S that has been manufactured, and is disposed at the subsequent stage of the curl forming apparatus 3 described above.

接合機構６１は、製管ローラ６４および駆動ローラ６５が組になったピンチローラ６３と、支持架台５に固定された歯車箱６６の歯車（図示せず）を介してピンチローラ６３を回転させる油圧モータ６７とからなり、製管ローラ６４の回転軸および駆動ローラ６５の回転軸は、螺旋管Ｓのリード角に対して軸線方向が直交するように配置されて、油圧モータ６７の出力軸とともにそれぞれ歯車箱６６に回転自在に軸支されている。そして、油圧モータ６７を回転駆動することにより、その出力軸、製管ローラ６４の回転軸および駆動ローラ６５の回転軸にそれぞれ固定されて互いに噛み合う歯車を介して製管ローラ６４および駆動ローラ６５を互いに逆方向に回転させ、製管ローラ６４および駆動ローラ６５の間に補強材付き帯状体１００を挟み込んでガイドフレーム６２に向かって送り出す。   The joining mechanism 61 is a hydraulic pressure that rotates the pinch roller 63 via a pinch roller 63 in which a tube-forming roller 64 and a driving roller 65 are combined, and a gear (not shown) of a gear box 66 fixed to the support frame 5. The rotation axis of the pipe making roller 64 and the rotation axis of the drive roller 65 are arranged so that the axial direction is orthogonal to the lead angle of the spiral tube S, and each of the rotation shafts of the hydraulic motor 67 and the motor 67. The gearbox 66 is rotatably supported by the gearbox 66. Then, by rotating the hydraulic motor 67, the tube-forming roller 64 and the driving roller 65 are fixed to the output shaft, the rotating shaft of the tube-forming roller 64, and the rotating shaft of the driving roller 65, respectively, and meshed with each other. The belts 100 are rotated in directions opposite to each other, and the belt-like body 100 with a reinforcing material is sandwiched between the tube-making roller 64 and the driving roller 65 and sent out toward the guide frame 62.

なお、駆動ローラ６５の外周面には、ローレット加工が施されており、接合された一対の補強材付き帯状体１００，１００を滑ることなく送り出す。   Note that the outer peripheral surface of the drive roller 65 is knurled, and sends out the pair of joined strips 100, 100 with a reinforcing material without slipping.

ガイドフレーム６２は、一対のリンク部材が連結軸を介して回動自在に連結された複数個のリンク体６８と、各リンク体６８の連結軸にそれぞれ回転自在に設けられた案内ローラ６９と、からなり、これらの案内ローラ６９を設けた複数個のリンク体６８が相互に連結されて略環状に形成されている。   The guide frame 62 includes a plurality of link bodies 68 in which a pair of link members are rotatably connected via connection shafts, and guide rollers 69 rotatably provided on the connection shafts of the link bodies 68, A plurality of link bodies 68 provided with these guide rollers 69 are connected to each other to form a substantially annular shape.

次に、この製管装置１を用いた既設管の更生方法について説明する。   Next, a method for rehabilitating an existing pipe using the pipe making apparatus 1 will be described.

発進側マンホールＭ１の近傍の地上に設置したドラムＤから引き出した補強材付き帯状体１００をマンホールＭ１内に引き入れる。そして、マンホールＭ１の下部に設置した図示省略の回転付与機に製管装置１の支持架台５を据え付け、製管装置１自体を既設管Ｋの軸心回りに回転可能に保持する。そして、引き入れた補強材付き帯状体１００を巻き癖形成装置３を介して巻き癖をつけるとともに、製管機６によって螺旋管Ｓを形成しつつ順次回転しつつ既設管Ｋ内へと挿入する。螺旋管Ｓの回転は支持架台５に対し相対的な回転である。   The belt-like body 100 with the reinforcing material drawn out from the drum D installed on the ground in the vicinity of the starting side manhole M1 is drawn into the manhole M1. Then, the support frame 5 of the pipe making apparatus 1 is installed on a rotation imparting machine (not shown) installed in the lower part of the manhole M1, and the pipe making apparatus 1 itself is rotatably held around the axis of the existing pipe K. Then, the drawn strip 100 with the reinforcing material is curled through the curl forming device 3 and is inserted into the existing pipe K while being sequentially rotated while forming the spiral tube S by the pipe making machine 6. The rotation of the spiral tube S is relative to the support frame 5.

この製管作業と同時進行にて、回転付与機によって、製管装置１（支持架台５）を、螺旋管Ｓの回転方向とは反対向きに，かつ，同じ回転速度で回転するように回転させる。これにより、製管装置１から送り出された螺旋管Ｓを既設管Ｋに対して相対的に巻き回さない状態で挿入できる。   Simultaneously with this pipe making operation, the pipe making apparatus 1 (support frame 5) is rotated by the rotation imparting machine so as to rotate in the direction opposite to the rotation direction of the spiral pipe S and at the same rotation speed. . Thereby, the spiral pipe S sent out from the pipe making apparatus 1 can be inserted in a state where it is not wound around the existing pipe K.

以上のように、本発明に係る既設管の更生方法は、両側縁部に接合部が形成された螺旋状の補強材付き帯状体１００を地上側から発進側マンホールＭ１内に引き入れて、補強材付き帯状体１００を接合する接合機構２３を有する製管機２によって、補強材付き帯状体１００の接合部同士を接合させて螺旋管Ｓを形成する既設管の更生方法であって、マンホールＭ１内において、製管機２の接合機構２３を螺旋管Ｓの軸心回りに公転させ、螺旋管Ｓを製管して、製管機２から螺旋管Ｓを取り外さない状態で、螺旋管Ｓを牽引して螺旋管Ｓを巻き回さない状態で既設管Ｋ内に挿入するため、螺旋管Ｓが回転しながら既設管Ｋ内に押し出される場合と異なり、螺旋管Ｓが既設管Ｋの内周面と接触する場合でも周方向への回転力を受けることがない。すなわち、隣合う補強材付き帯状体１００，１００同士が接合部において周方向に滑ることがないので、螺旋管Ｓが拡径するのを防止でき、曲り部や段差部がある既設管Ｋや、施工距離が長い既設管Ｋであっても、螺旋管Ｓをスムーズに製管して既設管Ｋ内に挿入できる。   As described above, the method for rehabilitating an existing pipe according to the present invention draws the strip-shaped body 100 with a spiral reinforcing material in which joints are formed on both side edges into the starting side manhole M1 from the ground side, and reinforces the reinforcing material. A rehabilitation method for an existing pipe in which a spiral pipe S is formed by joining the joining portions of the belt-like body 100 with the reinforcing material by the pipe making machine 2 having the joining mechanism 23 for joining the belt-like body 100, and in the manhole M1 , The joint mechanism 23 of the pipe making machine 2 is revolved around the axis of the spiral pipe S, the spiral pipe S is made, and the spiral pipe S is pulled without removing the spiral pipe S from the pipe making machine 2. Since the spiral tube S is inserted into the existing tube K without being wound, unlike the case where the spiral tube S is pushed into the existing tube K while rotating, the spiral tube S is disposed on the inner peripheral surface of the existing tube K. Even when it comes into contact with the surface, it does not receive rotational force in the circumferential direction. That is, since the adjacent strips 100, 100 with reinforcing materials do not slide in the circumferential direction at the joint portion, the spiral tube S can be prevented from expanding in diameter, the existing tube K having a bent portion or a stepped portion, Even if the existing pipe K has a long construction distance, the helical pipe S can be smoothly manufactured and inserted into the existing pipe K.

また、製管機２は既設管Ｋ内には進入せずに発進側マンホールＭ１内で製管作業を行うので、作業中に製管機２が故障してもマンホールＭ１内にて容易に修理作業を行うことができる。これに対し、製管機が既設管Ｋ内に進入しながら螺旋管Ｒを残置する方法では、人間が入れないような小口径の既設管Ｋの途中で製管機が故障すれば非常に修理作業が難航するが、本発明の更生方法によれば修理し易く、安心して作業を行うことができる。   Moreover, since the pipe making machine 2 does not enter the existing pipe K and performs the pipe making work in the starting manhole M1, even if the pipe making machine 2 breaks down during the work, the pipe making machine 2 is easily repaired in the manhole M1. Work can be done. In contrast, in the method in which the pipe making machine enters the existing pipe K and leaves the spiral pipe R, if the pipe making machine fails in the middle of the existing small-diameter pipe K that cannot be inserted by humans, it is very repaired. Although the operation is difficult, according to the rehabilitation method of the present invention, it is easy to repair and the operation can be performed with peace of mind.

さらに、製管された螺旋管Ｓの先頭部に、索条体４１を連結して既設管Ｋ内に牽引するため、螺旋管Ｓをスムーズに既設管Ｋ内に挿入でき、作業性が非常によい。   Furthermore, since the cable body 41 is connected to the head part of the manufactured spiral pipe S and pulled into the existing pipe K, the spiral pipe S can be smoothly inserted into the existing pipe K, and workability is very high. Good.

さらにまた、補強材付き帯状体１００は、長手方向に連続する金属製の補強材１２０が装着され、補強材１２０を塑性変形させて円弧状の巻き癖をつけながらマンホールＭ１内に引き入れるため、剛性が大きな補強材付き帯状体１００であっても製管機２による製管作業をスムーズに行うことができるとともに、補強材１２０によって剛性の大きな螺旋管Ｓを製管できる。   Further, the band-like body 100 with the reinforcing material is provided with a metal reinforcing material 120 that is continuous in the longitudinal direction, and the reinforcing material 120 is plastically deformed and pulled into the manhole M1 while attaching an arcuate curl. Even if it is the strip | belt-shaped body 100 with a big reinforcing material, while the pipe making operation | work by the pipe making machine 2 can be performed smoothly, the highly rigid helical tube S can be piped by the reinforcing material 120. FIG.

なお、図１６に示すように、製管機２の接合機構２３の前方（接合機構２３の正回転による補強材付き帯状体１００の送り込み方向の上流側）に位置して、補強材付き帯状体１００を接合機構２３に同一角度で導く入口ガイド２６および入口ガイド２６に補強材付き帯状体１００を案内するガイドローラ２７が設けられている。   In addition, as shown in FIG. 16, it is located in front of the joining mechanism 23 of the pipe making machine 2 (the upstream side in the feeding direction of the strip-like body 100 with the reinforcing material by the normal rotation of the joining mechanism 23), and the strip-like body with the reinforcing material. An inlet guide 26 that guides 100 to the joining mechanism 23 at the same angle and a guide roller 27 that guides the belt-like body 100 with a reinforcing material to the inlet guide 26 are provided.

入口ガイド２６は、製管機２の接合機構２３に固定された取付材２６１に、ローラ２６２ａを回転自在に軸支するアーム２６２が回動自在に連結されて構成され（図１７参照）、接合機構２３に導かれる直前の補強材付き帯状体１００の裏面側を押さえ込むことにより、補強材付き帯状体１００を接合機構２３に同一の曲率半径で導くことができる。   The inlet guide 26 is configured by an arm 262 that rotatably supports a roller 262a and a mounting member 261 fixed to the joining mechanism 23 of the pipe making machine 2 (see FIG. 17). By pressing down the back side of the band with reinforcing material 100 just before being guided to the mechanism 23, the band with reinforcing material 100 can be guided to the joining mechanism 23 with the same radius of curvature.

また、ガイドローラ２７は、図１８に示すように、接合機構２３の前方に周方向に一定間隔（実施例においては、９０度の間隔）をおいて製管機２の取付フレーム２１に取付ステー２７１を介して固定された取付材２７２の上下および左側端（補強材付き帯状体１００の送り込み方向の上流側から見て左側）にそれぞれ回転ローラ２７３を回転自在に軸支して構成され、巻き癖形成装置３を経て導かれる螺旋状の補強材付き帯状体１００の外側端縁、表面および裏面をそれぞれ各回転ローラ２７３によって規制することにより、補強材付き帯状体１００を接合機構２３の前段に配置された入口ガイド２６へと安定した姿勢で導くことができる。   Further, as shown in FIG. 18, the guide roller 27 is attached to the attachment frame 21 of the pipe making machine 2 at a constant interval in the circumferential direction (in the embodiment, an interval of 90 degrees) in front of the joining mechanism 23. Rotating rollers 273 are rotatably supported on the upper and lower and left ends (left side as viewed from the upstream side in the feeding direction of the band-like body 100 with the reinforcing material) of the mounting member 272 fixed via 271, By restricting the outer edge, front surface and back surface of the spiral reinforcing strip 100 guided through the wrinkle forming device 3 by the respective rotating rollers 273, the reinforcing strip 100 is placed in front of the joining mechanism 23. It can guide to the arranged entrance guide 26 in a stable posture.

一方、巻き癖形成装置３においても、補強材付き帯状体１００を第１送りローラ３２に円滑に導くため、第１送りローラ３２に入口ガイド３２６が設けられるとともに、第２送りローラ３３によって引き取られる補強材付き帯状体１００の巻き癖径を調整するため、第２送りローラ３３に巻き癖調整機構３３６が設けられている。具体的には、入口ガイド３２６は、図１８に示すように、第１送りローラ３２の入口側において、補強材付き帯状体１００を挟み込んでピンチローラ３２１に導く一対のローラ３２７が取付板３２８に回転自在に軸支されて構成され、補強材付き帯状体１００は、一対のローラ３２７を経て第１ピンチローラ３２１に導かれる。したがって、ドラムＤから引き出された補強材付き帯状体１００は、入口ガイド３２６の一対のローラ３２７を経てピンチローラ３２１に導かれるため、第１ピンチローラ３２１の損傷を防止してスムーズに導くことができる。   On the other hand, also in the curl forming apparatus 3, the first feed roller 32 is provided with an inlet guide 326 and is taken up by the second feed roller 33 in order to smoothly guide the band with reinforcing material 100 to the first feed roller 32. In order to adjust the curl diameter of the band-like body 100 with the reinforcing material, the curl adjusting mechanism 336 is provided on the second feed roller 33. Specifically, as shown in FIG. 18, the inlet guide 326 includes a pair of rollers 327 that sandwich the belt-like body 100 with a reinforcing material and guide it to the pinch roller 321 on the attachment plate 328 on the inlet side of the first feed roller 32. The belt-like body 100 with a reinforcing material is guided by a first pinch roller 321 through a pair of rollers 327. Therefore, since the band with reinforcing material 100 drawn out from the drum D is guided to the pinch roller 321 through the pair of rollers 327 of the inlet guide 326, the first pinch roller 321 is prevented from being damaged and smoothly guided. it can.

また、巻き癖調整機構３３６は、図２０に示すように、第２送りローラ３２の出口側において、取付材３３７に連結され、先端に押圧ローラ３３８ａを回転自在に軸支する回動プレート３３８と、取付材３３７に設けられ、回動プレート３３８を押圧して撓ませる調整ボルト３３９とから構成され、調整ボルト３３９をねじ込み、あるいは、緩めることにより、取付材３３７に対して回動プレート３３８を弾性力に抗して押圧し、押圧ローラ３３８ａの位置を調整することができる。例えば、調整ボルト３３９をねじ込むことにより、取付材３３７に対して回動プレート３３８を弾性力に抗して撓ませることができ、第２送りローラ３３により引き取られて巻き癖が形成された補強材付き帯状体１００を押圧してスプリングバックを矯正し、補強材付き帯状体１００の巻き癖の曲率半径を目標の曲率半径に近づくように調整することができる。同様に、調整ボルト３３９を緩めることにより、取付材３３７に対して回動プレート３３８を弾性力により復元するように立ち上げることができ、第２送りローラ３３により引き取られて巻き癖が形成された補強材付き帯状体１００に対する押圧を弱めてスプリングバックを矯正し、補強材付き帯状体１００の巻き癖の曲率半径を目標の曲率半径に近づくように調整することができる。   Further, as shown in FIG. 20, the curl adjusting mechanism 336 is connected to a mounting member 337 on the outlet side of the second feed roller 32, and a rotating plate 338 that rotatably supports the pressing roller 338a at the tip. The adjusting bolt 339 is provided on the mounting member 337 and presses and flexes the rotating plate 338. The adjusting bolt 339 is screwed or loosened to elastically rotate the rotating plate 338 with respect to the mounting member 337. The position of the pressing roller 338a can be adjusted by pressing against the force. For example, when the adjustment bolt 339 is screwed in, the rotating plate 338 can be bent against the mounting member 337 against the elastic force, and the reinforcing material is taken up by the second feed roller 33 to form a curl. The attached belt-shaped body 100 is pressed to correct the spring back, and the curvature radius of the curl of the belt-shaped body 100 with the reinforcing material can be adjusted to approach the target curvature radius. Similarly, by loosening the adjustment bolt 339, the rotation plate 338 can be raised with respect to the attachment material 337 so as to be restored by an elastic force, and is taken up by the second feed roller 33 to form a curl. It is possible to correct the springback by weakening the pressure applied to the band with reinforcing material 100 and adjust the radius of curvature of the curl of the band with reinforcing material 100 so as to approach the target curvature radius.

本発明の既設管の更生方法に用いられる補強材付き帯状体の一例を示す断面図である。It is sectional drawing which shows an example of the strip | belt body with a reinforcing material used for the rehabilitation method of the existing pipe | tube of this invention. 図１に示す補強材付き帯状体の接合過程を示す断面図である。It is sectional drawing which shows the joining process of the strip | belt body with a reinforcing material shown in FIG. 本発明の既設管の更生方法に用いる製管装置を構成する製管機の一例を示す平面図である。It is a top view which shows an example of the pipe making machine which comprises the pipe making apparatus used for the rehabilitation method of the existing pipe of this invention. 図３の製管機の正面図である。It is a front view of the pipe making machine of FIG. 本発明の既設管の更生方法に用いる製管装置を構成する巻き癖形成装置の一例を示す正面図である。It is a front view which shows an example of the curl forming apparatus which comprises the pipe making apparatus used for the rehabilitation method of the existing pipe | tube of this invention. 図５の巻き癖形成装置の側面図である。It is a side view of the curl forming apparatus of FIG. 本発明の既設管の更生方法の一実施形態を示し、補強材付き帯状体を取り付けた製管機をマンホール内に設置した状態を説明する工程図である。It is process drawing which shows one Embodiment of the rehabilitation method of the existing pipe | tube of this invention, and demonstrates the state which installed the pipe manufacturing machine which attached the strip | belt body with a reinforcing material in the manhole. 製管された螺旋管を既設管内に挿入している状態を説明する工程図である。It is process drawing explaining the state which has inserted the manufactured helical pipe in the existing pipe. 螺旋管を既設管に挿入した状態を説明する工程図である。It is process drawing explaining the state which inserted the helical tube in the existing pipe | tube. 螺旋管に止水栓とウエイトを取り付けた状態を説明する工程図である。It is process drawing explaining the state which attached the water stop cock and the weight to the spiral tube. 既設管と螺旋管との隙間に裏込め材を注入する状態を説明する工程図である。It is process drawing explaining the state which inject | pours a backfilling material into the clearance gap between an existing pipe and a spiral pipe. 更生作業完了の状態を示す地中管路の断面図である。It is sectional drawing of an underground pipe line which shows the state of completion of rehabilitation work. 螺旋管の浮上防止の他の例を示す縦断面図である。It is a longitudinal cross-sectional view which shows the other example of floating prevention of a helical tube. 帯状体の他の例を示し、（ａ）は断面図で、（ｂ）は要部斜視図である。The other example of a strip | belt-shaped body is shown, (a) is sectional drawing, (b) is a principal part perspective view. 本発明に係る既設管の更生方法に用いる他の製管装置を示す側面図である。It is a side view which shows the other pipe making apparatus used for the rehabilitation method of the existing pipe | tube which concerns on this invention. 入口ガイドおよびガイドローラを設けた製管機の正面図である。It is a front view of a pipe making machine provided with an entrance guide and guide rollers. 図１６の入口ガイドを一部省略した接合機構とともに示す側面図である。It is a side view shown with the joining mechanism which abbreviate | omitted the entrance guide of FIG. 図１６のガイドローラを拡大して示す正面図および平面図である。It is the front view and top view which expand and show the guide roller of FIG. 入口ガイドを設けた巻き癖形成装置を一部省略して示す平面図および正面図である。It is the top view and front view which abbreviate | omitted and show the curl forming apparatus which provided the entrance guide partially. 巻き癖調整機構を設けた巻き癖形成装置を一部省略して示す平面図および正面図である。It is the top view and front view which abbreviate and show a part of the curl forming apparatus provided with the curl adjusting mechanism.

符号の説明Explanation of symbols

１ 製管装置
２，６ 製管機
２３，６１ 接合機構
３ 巻き癖形成装置
４ ウインチ
４１ 索条体
１００ 補強材付き帯状体
１１０ 帯状体
１２０ 補強材
Ｋ 既設管
Ｍ１，Ｍ２ マンホール
Ｓ 螺旋管 DESCRIPTION OF SYMBOLS 1 Pipe making apparatus 2,6 Pipe making machine 23,61 Joining mechanism 3 Winding hook forming apparatus 4 Winch 41 Rope body 100 Strip body with reinforcement 110 Strip body 120 Reinforcement material K Existing pipe M1, M2 Manhole S Spiral pipe

Claims (2)

両側縁部に接合部が形成され、長手方向に連続する金属製の補強材が装着された螺旋状の補強材付き帯状体を地上側からマンホール内に引き入れ、互いに隣接する帯状体の接合部同士を接合する接合機構を有する製管機によって接合部同士を接合して螺旋管を製管し、既設管を更生する方法であって、補強材付き帯状体を地上において螺旋管の曲率半径と略同等の曲率半径、又は、螺旋管の曲率半径と同等以下の曲率半径に塑性変形させて円弧状の巻き癖を形成し、円弧状に塑性変形させた螺旋状の補強材付き帯状体をマンホール内に引き入れてマンホール内に配置された製管機に導き、マンホール内において製管機を螺旋管の軸心回りに公転させて螺旋管を製管するとともに、製管機から螺旋管を取り外さない状態で製管機または螺旋管を牽引または押圧して螺旋管を巻き回さない状態で既設管内に挿入することを特徴とする既設管の更生方法。 A band-shaped body with a spiral reinforcing material with joints formed on both side edges and a continuous metal reinforcing material in the longitudinal direction is drawn into the manhole from the ground side, and the joints of the band-shaped bodies adjacent to each other This is a method of joining a joint portion by a pipe making machine having a joining mechanism to make a spiral tube, and rehabilitating an existing tube, and a band with a reinforcing material is substantially equal to the radius of curvature of the spiral tube on the ground. An arcuate curl is formed by plastic deformation to the same radius of curvature or a radius of curvature equal to or less than the radius of curvature of the spiral tube. The pipe is drawn into the pipe making machine placed in the manhole, and the pipe making machine is revolved around the axis of the helical pipe to make the helical pipe, and the helical pipe is not removed from the pipe making machine. With pipe making machine or spiral tube Rehabilitation method of the existing pipe, characterized in that pull or push to be inserted into the existing pipe with no wound helical tube. 請求項１記載の既設管の更生方法において、製管された螺旋管の先頭部に索条体を連結して既設管内に牽引することを特徴とする既設管の更生方法。 2. A method for rehabilitating an existing pipe according to claim 1 , wherein a rope is connected to a leading portion of the piped spiral pipe and pulled into the existing pipe.
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JP5689679B2 (en) * 2010-01-07 2015-03-25 クボタシーアイ株式会社 Lining method, rehabilitation pipeline, and rehabilitation member
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