JP2024085730A - Pipe making equipment for expanding rehabilitated pipes - Google Patents

Pipe making equipment for expanding rehabilitated pipes Download PDF

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JP2024085730A
JP2024085730A JP2022200416A JP2022200416A JP2024085730A JP 2024085730 A JP2024085730 A JP 2024085730A JP 2022200416 A JP2022200416 A JP 2022200416A JP 2022200416 A JP2022200416 A JP 2022200416A JP 2024085730 A JP2024085730 A JP 2024085730A
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pipe
section
cutting
introduction
shaped member
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聡俊 佐藤
武司 寺尾
将司 蛭田
雅稀 後藤
耕平 小松
隆之 東海林
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Sekisui Chemical Co Ltd
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Sekisui Chemical Co Ltd
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Abstract

【課題】エキスパンダー製管工法において、更生管の拡張終端部分を円滑かつ確実に拡張させる。【解決手段】帯状部材10からなる螺旋管状の更生管3を更生対象の管路1内に配置する。帯状部材10における後続帯部分19を拡張用製管装置20の導入部40から製管部30へ導入する。製管部30において、帯状部材10を螺旋方向に沿って巻回して帯状部材10の一周違いの隣接する縁部分13,14どうしを凹凸嵌合させることによって、更生管3の新たな管端3eを形成するとともに該管端3eを螺旋方向にねじ込む。これによって、更生管3の周長可変処理された管部分3aの周長を拡張させる。拡張のフィニシング処理時には、導入部40の導入口40aに切断部材50を臨ませ、帯状部材10の縁部分14の一部の凸条14bを切断部材50によって切断する。【選択図】図1[Problem] In an expander pipe manufacturing method, the expanded end portion of a rehabilitated pipe is expanded smoothly and reliably. [Solution] A helical rehabilitating pipe 3 made of a band-shaped member 10 is placed in a pipeline 1 to be rehabilitated. A succeeding band portion 19 of the band-shaped member 10 is introduced into a pipe manufacturing section 30 from an introduction section 40 of an expansion pipe manufacturing device 20. In the pipe manufacturing section 30, the band-shaped member 10 is wound in a helical direction to engage adjacent edge portions 13, 14 of the band-shaped member 10 that are one turn apart, forming a new pipe end 3e of the rehabilitated pipe 3 and screwing the pipe end 3e in the helical direction. This expands the circumferential length of the pipe portion 3a of the rehabilitating pipe 3 that has been subjected to a circumferential length change process. During the expansion finishing process, a cutting member 50 is placed in front of an introduction port 40a of the introduction section 40, and a protruding ridge 14b of a portion of the edge portion 14 of the band-shaped member 10 is cut by the cutting member 50. [Selected Figure] Figure 1

Description

本発明は、例えば老朽化した下水道等の既設の管路の内周に沿う螺旋管状の更生管を構築することによって管路を更生するための製管装置に関し、特に、更生管をいわゆるエキスパンダー(拡張)製管工法によって構築する製管装置に関する。 The present invention relates to a pipe manufacturing device for rehabilitating existing pipelines, such as aging sewerage systems, by constructing a helical rehabilitating pipe along the inner circumference of the pipeline, and in particular to a pipe manufacturing device that constructs the rehabilitating pipe using the so-called expander pipe manufacturing method.

老朽化した下水道等の管路内に螺旋管状の更生管を構築して管路を更生する方法は公知である(例えば特許文献1等参照)。螺旋管状の更生管は、帯状部材を螺旋状に巻回して一周違いの隣接する縁部分どうしを接合することによって構成される。 A method of constructing a helical rehabilitation pipe inside an aging sewerage pipeline or the like to rehabilitate the pipeline is known (see, for example, Patent Document 1, etc.). A helical rehabilitation pipe is constructed by winding a strip-shaped member in a helical shape and joining adjacent edge portions that are one turn apart.

特許文献1には、螺旋管状の更生管の構築方法の1つとして、いわゆるエキスパンダー(拡張)製管工法が開示されている。詳しくは、帯状部材の前記隣接する縁部分どうしの間に切断用ワイヤを介在させながら、既設管の内径より小径の更生管を製管する。その後、切断用ワイヤを引き取ることによって、帯状部材の縁部分の凹凸嵌合用の凸条の1つを更生管の到達端側から発進端側へ向けて巻回方向に沿って順次切断することで周長可変にする。これと併行して、発進側人孔に設置された元押し式の製管装置によって帯状部材を更生管へ更に供給して更生管に捩じり力を付与することによって、前記周長可変処理された管部分の周長を拡張(拡径)させる。これによって、更生管が既設管の内周面の全周にわたって張り付けられる。 Patent Document 1 discloses a so-called expander pipe manufacturing method as one method for constructing a helical rehabilitated pipe. In detail, a rehabilitated pipe with a diameter smaller than the inside diameter of the existing pipe is manufactured by interposing a cutting wire between the adjacent edge portions of the band-shaped member. Then, by pulling the cutting wire, one of the convex ridges for fitting the concave and convex portions of the edge portion of the band-shaped member is cut in sequence along the winding direction from the arrival end side to the starting end side of the rehabilitated pipe, thereby making the circumference variable. In parallel with this, a push-type pipe manufacturing device installed in the starting manhole further supplies the band-shaped member to the rehabilitated pipe and applies a twisting force to the rehabilitated pipe, thereby expanding (expanding) the circumference of the pipe portion that has been subjected to the circumference variable processing. As a result, the rehabilitated pipe is attached to the entire inner surface of the existing pipe.

特開2021-115750号公報JP 2021-115750 A

エキスパンダー製管工法の施工に際しては、更生管における未拡張の小径管部から拡張済の大径管部へ向かって拡径するコーン部の長さ管理が重要である。コーン部が長過ぎると、既設管の内周面への密着不良が起きる。一方、コーン部が短過ぎると、未拡張の小径管部とコーン部との間でバックリング(隣接する縁部分どうしの凹凸嵌合の破断)が起きる。特に、コーン部と製管装置との距離がある大きさ以内になったフィニッシング段階では、コーン部の長さを十分に確保できず、バックリングが起きやすくなる。また、切断用ワイヤの引き取り角度が急になり、抵抗が大きい。引き取り角度を小さくすると、切断用ワイヤが製管装置に絡まるおそれがある。 When using the expander pipe making method, it is important to manage the length of the cone section, which expands from the unexpanded small diameter pipe section of the rehabilitated pipe to the expanded large diameter pipe section. If the cone section is too long, it will not adhere well to the inner surface of the existing pipe. On the other hand, if the cone section is too short, buckling (breakage of the uneven fit between adjacent edges) will occur between the unexpanded small diameter pipe section and the cone section. In particular, at the finishing stage when the distance between the cone section and the pipe making device is within a certain size, the cone section cannot be long enough, making buckling more likely to occur. In addition, the pull angle of the cutting wire becomes steep, creating large resistance. If the pull angle is made small, the cutting wire may become tangled in the pipe making device.

そこで、フィニッシング段階になったら、製管装置へ導入される前の帯状部材の前記凸条を予め切断しておくことが考えられる。そうすると、当該予め切断しておいた部分が、切断用ワイヤで切断された部分と合流するまで拡張製管すれば、それ以降は切断用ワイヤを引き取る必要が無く、更生管の管端を製管装置から切り離して自然拡径させることができる。しかし、製管装置担当の作業者は、帯状部材の凹凸嵌合の確認、シーリングの確認、切断用ワイヤの挿入位置の確認などを同時平行で行なう必要があり、更に凸条の切断作業を前述の作業をしながら手作業で行なうことになると、作業者の負担が大きいという問題がある。
本発明は、かかる事情に鑑み、エキスパンダー製管工法のフィニッシング段階において、作業者に過度な負担をかけることなく、帯状部材の凸条を切断することができる製管装置を提供することを目的とする。
Therefore, when the finishing stage is reached, it is conceivable to cut off the ridges of the belt-shaped member before it is introduced into the pipe making device. In this case, if the previously cut portion is expanded until it joins with the portion cut by the cutting wire, there is no need to withdraw the cutting wire, and the end of the rehabilitated pipe can be separated from the pipe making device and allowed to expand naturally. However, the worker in charge of the pipe making device must simultaneously check the engagement of the ridges and grooves of the belt-shaped member, check the sealing, check the insertion position of the cutting wire, and so on, and if the worker has to manually cut off the ridges while performing the above-mentioned operations, this creates a problem of a heavy burden on the worker.
In consideration of the above circumstances, the present invention aims to provide a pipe making apparatus that can cut the convex ribs of a belt-shaped member without placing an excessive burden on the worker during the finishing stage of the expander pipe making method.

前記課題を解決するため、本発明は、更生対象の管路内に配置された螺旋管状の更生管の周長可変処理された管部分の周長を拡張させる製管装置であって、
前記更生管を構成する帯状部材を螺旋方向に沿って巻回して該帯状部材の一周違いの隣接する縁部分どうしを凹凸嵌合させることによって前記更生管の新たな管端を形成するとともに該管端を前記螺旋方向にねじ込んで前記管部分に対する拡張力を得る製管部と、
前記帯状部材における前記管端に連なる後続帯部分を前記製管部へ導入する導入口を有する導入部と、
前記導入口に臨むようにして前記導入部に進退可能又は着脱可能に設けられ、前記帯状部材の1の縁部分に形成された前記凹凸嵌合用の凸条の一部を切断する切断部材と、
を備えた更生管拡張用の製管装置を特徴とする。
In order to solve the above problems, the present invention provides a pipe manufacturing apparatus for expanding the circumferential length of a pipe portion that has been subjected to a circumferential length variable treatment of a helical rehabilitating pipe that is disposed in a pipeline to be rehabilitated, comprising:
a pipe manufacturing section that forms a new pipe end of the rehabilitating pipe by winding a strip-shaped member constituting the rehabilitating pipe in a spiral direction and fitting adjacent edge portions of the strip-shaped member one turn apart into a recessed and projecting engagement, and that screws the pipe end in the spiral direction to obtain an expansion force for the pipe portion;
an introduction section having an introduction port for introducing a subsequent strip portion of the strip member connected to the tube end into the tube making section;
a cutting member provided in the introduction section so as to be movable forward and backward or detachable in the introduction section so as to face the introduction port, the cutting member cutting a part of the projection for engagement formed on one edge portion of the belt-shaped member;
The present invention is characterized by a pipe making device for expanding rehabilitated pipes, which is equipped with the above.

フィニッシング段階に達する前は、切断部材を退避させるか取り外しておく。したがって、凸条が切断部材によって切断されることはない。
フィニッシング段階になったら、製管部の駆動を一旦停止し、切断部材を取り付けるか前進させて固定し、後続帯部分の前記凸条の一部に切断部材を食い込ませる。その後、製管部の駆動を再開すると、後続帯部分が製管部へ送り込まれるのに伴って、前記凸条の一部が切断部材によって連続的に切断される。製管装置担当の作業者が手作業で切断を行なう必要が無く、作業者の負担が軽減される。帯状部材の凹凸嵌合の不具合等のトラブル発生時には、すばやく対応できる。
Before the finishing stage is reached, the cutting member is retracted or removed, so that the ridges are not cut by the cutting member.
When the finishing stage is reached, the operation of the pipe making section is temporarily stopped, and the cutting member is attached or advanced and fixed, so that the cutting member bites into a portion of the ridge of the succeeding band section. When the operation of the pipe making section is then resumed, as the succeeding band section is fed into the pipe making section, a portion of the ridge is continuously cut by the cutting member. There is no need for the operator in charge of the pipe making device to cut the material manually, which reduces the burden on the operator. When a problem occurs, such as a malfunction in the fit of the concave and convex parts of the band-shaped member, it can be dealt with quickly.

好ましくは、前記切断部材が、前記導入部に取り付けられるベース部と、前記ベース部から前記後続帯部分が導入される方向の上流側へ向けて突出された刃部とを含む。
これにより、刃部を前記凸条の一部に食い込ませた状態で、後続帯部分を製管部へ送り込むことで、前記凸条の一部を刃部によって連続的に切断できる。
ベース部は、導入部に対して進退可能又は着脱可能であることが好ましい。
Preferably, the cutting member includes a base portion attached to the introduction portion, and a blade portion protruding from the base portion toward the upstream side in the direction in which the trailing strip portion is introduced.
This allows the blade portion to be continuously cut off from a portion of the ridge by feeding the subsequent band portion into the pipe making section while the blade portion is biting into a portion of the ridge.
It is preferable that the base portion be movable forward and backward relative to the introduction portion or be detachable.

好ましくは、前記ベースには、前記導入部との取付用のボルトが挿通される長孔が形成されており、前記後続帯部分の幅方向と、前記長孔の長手方向とが、互いに直交している。
これにより、取付用のボルトを緩めることで、切断部材を後続帯部分の幅方向と直交する向きに進退させて位置調節することができる。取付用のボルトを締め付けることで、切断部材の位置が固定される。
Preferably, the base is formed with a long hole through which a bolt for attachment to the introduction portion is inserted, and the width direction of the trailing band portion and the longitudinal direction of the long hole are perpendicular to each other.
Thus, by loosening the mounting bolt, the cutting member can be moved back and forth in a direction perpendicular to the width direction of the trailing strip portion to adjust its position. By tightening the mounting bolt, the position of the cutting member is fixed.

好ましくは、前記導入部が、前記後続帯部分の前記凸条が向けられる外周側案内部と、前記後続帯部分の内周側面が向けられる内周側案内部とを有し、これら案内部どうし間に前記導入口が形成されており、前記切断部材が、前記外周側案内部に設けられている。これによって、切断部材が前記凸条と対向するように配置できる。 Preferably, the introduction section has an outer guide section to which the ridge of the trailing band section faces, and an inner guide section to which the inner side surface of the trailing band section faces, the introduction port is formed between these guide sections, and the cutting member is provided on the outer guide section. This allows the cutting member to be positioned so as to face the ridge.

好ましくは、前記内周側案内部には、前記後続帯部分の前記内周側面を押える規制部材が、前記切断部材よりも前記後続帯部分が導入される方向の上流側に突出するように設けられている。
これによって、導入部へ導入される前の後続帯部分が、巻き癖等によって該後続帯部分の内周側面が凹曲面となるように湾曲したとしても、規制部材によって後続帯部分を内周側から押さえることで、後続帯部分が切断部材から離間するのを防止でき、切断を確実に行なうことができる。
Preferably, the inner guiding portion is provided with a regulating member for pressing the inner circumferential side surface of the trailing belt portion so as to protrude upstream of the cutting member in the direction in which the trailing belt portion is introduced.
As a result, even if the trailing band portion before being introduced into the introduction section becomes curved so that the inner side surface of the trailing band portion becomes concave due to a curling tendency or the like, the trailing band portion can be pressed from the inner side by the regulating member, thereby preventing the trailing band portion from separating from the cutting member, and cutting can be performed reliably.

好ましくは、前記外周側案内部には規制支持部材が前記規制部材と対向するように設けられ、前記規制支持部材及び前記規制部材の幅方向の互いに同じ側の端部どうしが連結部材によって連結されている。
これによって、規制部材によって帯状部材を内周側から確実に押えることができる。
前記規制支持部材及び前記規制部材の少なくとも一方が、互いの対向方向へスライド可能であってもよい。そうすることで、フィニッシング段階に達する前は、規制支持部材及び規制部材どうしを離間させておき、フィニッシング段階では、規制支持部材及び規制部材どうしを接近させて、規制部材によって帯状部材を内周側から押えることができる。
Preferably, a regulating support member is provided on the outer circumferential guide portion so as to face the regulating member, and ends of the regulating support member and the regulating member on the same side in the width direction are connected to each other by a connecting member.
This allows the restricting member to reliably press the belt-shaped member from the inner peripheral side.
At least one of the regulating support member and the regulating member may be slidable in a direction facing each other, so that the regulating support member and the regulating member are spaced apart from each other before the finishing stage is reached, and the regulating support member and the regulating member are brought close to each other in the finishing stage, so that the belt-shaped member can be pressed from the inner periphery side by the regulating member.

本発明によれば、エキスパンダー製管工法のフィニッシング段階において、作業者に過度な負担をかけることなく、帯状部材の後続帯部分の凸条を予め切断することができる。 According to the present invention, in the finishing stage of the expander pipe manufacturing method, the convex ribs of the subsequent band portion of the band-shaped member can be pre-cut without placing an excessive burden on the worker.

図1は、本発明の第1実施形態に係る既設管路内に構築中の更生管を、拡張工程におけるフィニッシング処理の途中段階で示す側面図である。FIG. 1 is a side view showing a rehabilitation pipe being constructed within an existing pipeline in a middle stage of a finishing process in an expansion step according to a first embodiment of the present invention. 図2(a)は、図7(a)の円部IIaの拡大斜視断面図である。図2(b)は、図7(c)の円部IIbの拡大斜視断面図である。図2(c)は、図7(c)の円部IIcの拡大斜視断面図である。Fig. 2(a) is an enlarged perspective cross-sectional view of a circular portion IIa in Fig. 7(a), Fig. 2(b) is an enlarged perspective cross-sectional view of a circular portion IIb in Fig. 7(c), and Fig. 2(c) is an enlarged perspective cross-sectional view of a circular portion IIc in Fig. 7(c). 図3は、図1のIII-III線に沿う、拡張用の元押し製管装置の正面図である。FIG. 3 is a front view of the expansion extrusion tube making apparatus taken along line III-III in FIG. 図4は、前記元押し製管装置に設けられた切断部材の斜視図である。FIG. 4 is a perspective view of a cutting member provided in the main extrusion tube making device. 図5(a)は、図3の円部VIをフィニッシング処理前の状態で示す正面断面図である。図5(b)は、図3の円部VIをフィニッシング処理における前記切断部材の前進準備工程で示す正面断面図である。図5(c)は、図3の円部VIをフィニッシング処理における前記切断部材の前進工程で示す正面断面図である。Fig. 5(a) is a front cross-sectional view of the circular portion VI of Fig. 3 before the finishing process, Fig. 5(b) is a front cross-sectional view of the circular portion VI of Fig. 3 in a preparation step for the advancement of the cutting member in the finishing process, and Fig. 5(c) is a front cross-sectional view of the circular portion VI of Fig. 3 in a advancement step of the cutting member in the finishing process. 図6は、図3の円部VIを拡大して示す正面断面図である。FIG. 6 is an enlarged front sectional view of the circled portion VI in FIG. 図7(a)は、前記更生管を元押し製管工程で示す側面図である。図7(b)は、前記更生管を元押し製管工程の終了段階で示す側面図である。図7(c)は、前記更生管を拡張工程で示す側面図である。7(a) is a side view showing the rehabilitating pipe in an end-extrusion pipe-making process, FIG 7(b) is a side view showing the rehabilitating pipe at the end of the end-extrusion pipe-making process, and FIG 7(c) is a side view showing the rehabilitating pipe in an expansion process. 図8(a)は、前記更生管を、前記フィニッシング処理における両側の周長可変部分の合流段階で示す側面図である。図8(b)は、前記更生管を、前記合流後の処理段階で示す側面図である。図8(c)は、前記更生管を、前記フィニッシング処理の最終段階で示す側面図である。Fig. 8(a) is a side view showing the rehabilitating pipe at a stage where the circumferential length variable portions on both sides join in the finishing process, Fig. 8(b) is a side view showing the rehabilitating pipe at a processing stage after the joining, and Fig. 8(c) is a side view showing the rehabilitating pipe at the final stage of the finishing process. 図9は、図8(a)のIX-IX線に沿う断面図である。FIG. 9 is a cross-sectional view taken along line IX-IX in FIG. 図10は、本発明の第2実施形態に係る拡張用の元押し製管装置における切断部材の設置部分を、フィニッシング処理時の状態で示す正面断面図である。FIG. 10 is a front cross-sectional view showing an installation portion of a cutting member in an expansion end extrusion tube forming apparatus according to a second embodiment of the present invention, in a state during a finishing process. 図11は、前記第2実施形態の前記設置部分を、フィニッシング処理時の状態で示す平面断面図である。FIG. 11 is a plan sectional view showing the installation portion of the second embodiment in a state during a finishing process. 図12は、前記第2実施形態の前記設置部分を、フィニッシング処理前の状態で示す平面断面図である。FIG. 12 is a plan sectional view showing the installation portion of the second embodiment in a state before the finishing process. 図13は、前記第2実施形態の変形例1における切断部分の設置部分をフィニッシング処理前の状態で示す平面断面図である。FIG. 13 is a plan sectional view showing a location of a cutting portion in the first modified example of the second embodiment in a state before finishing processing. 図14は、前記第2実施形態の変形例2における切断部分の設置部分をフィニッシング処理時の状態で示す正面断面図である。FIG. 14 is a front cross-sectional view showing a location of the cutting portion in the second modification of the second embodiment during a finishing process. 図15(a)は、前記第2実施形態の変形例3における規制部材を示し、同図(b)のXVa-XVa線に沿う側面図である。図15(b)は、同図(a)のXVb-XVb線に沿う正面断面図である。Fig. 15(a) is a side view taken along line XVa-XVa in Fig. 15(b) showing the restricting member in the third modified example of the second embodiment, and Fig. 15(b) is a front cross-sectional view taken along line XVb-XVb in Fig. 15(a). 図16は、前記第2実施形態の変形例4を示し、規制部材の側面図である。FIG. 16 shows a fourth modified example of the second embodiment, and is a side view of a restricting member.

以下、本発明の実施形態を図面にしたがって説明する。
<第1実施形態(図1~図9>
図1は、老朽化した既設の管路1を更生する様子を示したものである。更生対象の既設管路1は、例えば地中に埋設された下水道管によって構成されているが、本発明は、これに限定されず、上水道管、農業用水管、ガス管、水力発電導水管、トンネルなどでもよい。管路1の内周に更生管3がライニングされることによって、管路1が更生される。
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
First embodiment (FIGS. 1 to 9)
Fig. 1 shows the state of rehabilitating an aged existing pipeline 1. The existing pipeline 1 to be rehabilitated is, for example, a sewerage pipe buried underground, but the present invention is not limited to this and may be a water supply pipe, an agricultural water pipe, a gas pipe, a hydroelectric power generation water pipe, a tunnel, etc. The pipeline 1 is rehabilitated by lining the inner circumference of the pipeline 1 with a rehabilitation pipe 3.

図1に示すように、更生管3は、帯状部材10からなる螺旋管である。帯状部材10の材質は、ポリ塩化ビニル(PVC)などの合成樹脂によって構成されている。図2及び図9に示すように、帯状部材10は、一定の断面形状を有する長尺帯状に形成されている。帯状部材10の帯幅方向の両側の縁部分13,14には、凹凸嵌合用の凹凸部が形成されている。 As shown in FIG. 1, the rehabilitation pipe 3 is a spiral pipe made of a strip-shaped member 10. The material of the strip-shaped member 10 is composed of a synthetic resin such as polyvinyl chloride (PVC). As shown in FIG. 2 and FIG. 9, the strip-shaped member 10 is formed in a long strip shape with a constant cross-sectional shape. The edge portions 13 and 14 on both sides in the strip width direction of the strip-shaped member 10 are formed with uneven portions for uneven engagement.

詳しくは、一方の縁部分13には、内周側(図2において下側)へ開口する2条(複数条)の第1凹溝13a及び第2凹溝13bが並んで形成されている。他方の縁部分14には、外周側(図2において上側)へ突出する2条(複数条)の第1凸条14a及び第2凸条14bが並んで形成されている。更生管3においては、第1凸条14aが第1凹溝13aに嵌合され、第2凸条14bが第2凹溝13bに嵌合されている。帯状部材10の帯幅方向の中間部には、リブ15が外周側へ突出するように形成されている。
なお、帯状部材10の断面形状は適宜改変できる。
In detail, two (multiple) first grooves 13a and second grooves 13b that open to the inner periphery (lower side in FIG. 2) are formed side by side in one edge portion 13. Two (multiple) first ridges 14a and second ridges 14b that protrude to the outer periphery (upper side in FIG. 2) are formed side by side in the other edge portion 14. In the rehabilitation pipe 3, the first ridge 14a is fitted into the first groove 13a, and the second ridge 14b is fitted into the second groove 13b. A rib 15 is formed in the middle of the belt-width direction of the belt-shaped member 10 so as to protrude to the outer periphery.
The cross-sectional shape of the belt-shaped member 10 can be modified as appropriate.

図1に示すように、更生管3は、元押し式の製管装置20によって製管される。製管装置20は、台座21と、製管部30と、導入部40を備えている。台座21ひいては製管装置20は、管路1の管口1eと連なる発進人孔4の底部に設置されている。 As shown in FIG. 1, the rehabilitated pipe 3 is produced by a push-type pipe production device 20. The pipe production device 20 includes a base 21, a pipe production section 30, and an introduction section 40. The base 21 and thus the pipe production device 20 are installed at the bottom of the starting manhole 4 that is connected to the pipe mouth 1e of the pipeline 1.

図3に示すように、台座21に製管部30が支持されている。製管部30は、外周規制体31と、ピンチローラ32,33を含む。外周規制体31は、螺旋に捩じれた環状に形成されている。図1に示すように、環状の外周規制体31の軸線ひいては製管部30の軸線L30は、管路1の管軸の延長線に沿うように配置されている。図3に示すように、外周規制体31の側方部にピンチローラ32,33が設けられている。外周規制体31の上端部には径調節機構34が設けられている。 As shown in Fig. 3, the pipe making section 30 is supported on the base 21. The pipe making section 30 includes an outer periphery regulating body 31 and pinch rollers 32, 33. The outer periphery regulating body 31 is formed in a spirally twisted annular shape. As shown in Fig. 1, the axis of the annular outer periphery regulating body 31 and thus the axis L30 of the pipe making section 30 are arranged along an extension of the pipe axis of the pipeline 1. As shown in Fig. 3, the pinch rollers 32, 33 are provided on the side portions of the outer periphery regulating body 31. A diameter adjustment mechanism 34 is provided at the upper end of the outer periphery regulating body 31.

図3に示すように、製管部30におけるピンチローラ32,33の上側部には、導入部40が上方へ突出するように設けられている。導入部40は、帯状部材10における更生管3の発進側管端3eに連なる後続帯部分19を製管部30へ案内するためのものであり、外周側案内部41と、内周側案内部42とを有している。製管部30の軸線L30と直交する左右方向に沿って、外周側案内部41は外側(図3において左側)、内周側案内部42は内側(図3において右側)に配置されている。外周側案内部41は、縦長の半割筐体43と、該半割筐体43に収容された上下複数段の外周側案内ローラ45を含む。内周側案内部42は、縦長の半割筐体44と、該半割筐体44に収容された上下複数段の内周側案内ローラ46を含む。案内ローラ45,46の回転軸は、製管部30の軸線L30と平行に向けられている。案内部41,42どうしが向かい合って、図示しない連結手段によって連結されている。半割筐体43,44の内部空間どうしが合わさっている。 As shown in FIG. 3, an introduction section 40 is provided on the upper side of the pinch rollers 32, 33 in the pipe making section 30 so as to protrude upward. The introduction section 40 is for guiding the trailing band portion 19 connected to the starting pipe end 3e of the rehabilitating pipe 3 in the band-shaped member 10 to the pipe making section 30, and has an outer circumferential guide section 41 and an inner circumferential guide section 42. Along the left-right direction perpendicular to the axis L30 of the pipe making section 30 , the outer circumferential guide section 41 is arranged on the outside (left side in FIG. 3), and the inner circumferential guide section 42 is arranged on the inside (right side in FIG. 3). The outer circumferential guide section 41 includes a vertically long half housing 43 and upper and lower multiple stages of outer circumferential guide rollers 45 housed in the half housing 43. The inner circumferential guide section 42 includes a vertically long half housing 44 and upper and lower multiple stages of inner circumferential guide rollers 46 housed in the half housing 44. The rotation axes of the guide rollers 45, 46 are oriented parallel to the axis L30 of the pipe making section 30. The guide sections 41, 42 face each other and are connected by a connecting means (not shown). The internal spaces of the half housings 43, 44 are aligned.

図3に示すように、これら案内部41,42どうし間に導入口40aが形成されている。図1に示すように、導入口40aの幅方向は、製管部30の軸線L30と平行に向けられている。 As shown in Fig. 3, an introduction port 40a is formed between these guide portions 41, 42. As shown in Fig. 1, the width direction of the introduction port 40a is oriented parallel to the axis L30 of the pipe making portion 30.

図3に示すように、導入部40には、切断部材50が設けられている。図4に示すように、切断部材50は、ベース部51と、刃部52と、補強壁53を含む。ベース部51は、水平な長方形の板状に形成されている。ベース部51には、長手方向に沿って延びる長孔51bが形成されている。ベース部51及び長孔51bの長手方向は、導入口40aの幅方向に対して直交している。 As shown in FIG. 3, the introduction section 40 is provided with a cutting member 50. As shown in FIG. 4, the cutting member 50 includes a base section 51, a blade section 52, and a reinforcing wall 53. The base section 51 is formed in a horizontal rectangular plate shape. A long hole 51b extending along the longitudinal direction is formed in the base section 51. The longitudinal direction of the base section 51 and the long hole 51b is perpendicular to the width direction of the introduction port 40a.

ベース部51の長手方向の一端部に刃部52が設けられている。刃部52は、ベース部51から上方(帯状部材10の後続帯部分19が導入される方向の上流側)へ向かって突出されている。刃部52の上端縁が、刃先52aとなっている。 A blade portion 52 is provided at one end in the longitudinal direction of the base portion 51. The blade portion 52 protrudes upward from the base portion 51 (upstream in the direction in which the trailing strip portion 19 of the strip-shaped member 10 is introduced). The upper edge of the blade portion 52 forms a cutting edge 52a.

切断部材50の幅方向の一端縁には、ほぼ三角形の補強壁53が設けられている。補強壁53が、ベース部51及び刃部52と接合されている。補強壁53によって、ベース部51と刃部52との角度がほぼ直角に保持されている。図1に示すように、好ましくは、補強壁53は、切断部材50における、製管部30の押し出し方向の先端側(図1において右側)を向く端縁に設けられている。切断部材50の反対側(図1において左側)の端縁には、補強壁53が設けられていない。
なお、補強壁53が無くても切断部材50が変形しない程度の剛性がある場合、補強壁53を省略してもよい。
An approximately triangular reinforcing wall 53 is provided on one edge in the width direction of the cutting member 50. The reinforcing wall 53 is joined to the base portion 51 and the blade portion 52. The reinforcing wall 53 maintains the angle between the base portion 51 and the blade portion 52 at approximately a right angle. As shown in Fig. 1, the reinforcing wall 53 is preferably provided on the edge of the cutting member 50 facing the tip side (right side in Fig. 1) in the extrusion direction of the pipe making section 30. No reinforcing wall 53 is provided on the edge on the opposite side (left side in Fig. 1) of the cutting member 50.
In addition, if the cutting member 50 has a sufficient rigidity so that it will not deform even without the reinforcing wall 53, the reinforcing wall 53 may be omitted.

図1及び図3に示すように、切断部材50のベース部51が、外周側案内部41の半割筐体43の上面に載置されている。図5に示すように、取付用ボルト54が、長孔51bに挿通されて半割筐体43にねじ込まれることで、切断部材50が導入部40に着脱可能に取り付けられている。かつ長孔51bによって、切断部材50が、導入口40aの幅方向と直交する方向へ進退可能になっている。図5(c)に示すように、切断部材50が前進されることで、刃部52が導入口40aに臨む。図5(a)及び同図(b)に示すように、切断部材50が後退されることで、刃部52が導入口40aから退避される。 As shown in Figs. 1 and 3, the base portion 51 of the cutting member 50 is placed on the upper surface of the half-split housing 43 of the outer circumferential guide portion 41. As shown in Fig. 5, the mounting bolt 54 is inserted into the long hole 51b and screwed into the half-split housing 43, so that the cutting member 50 is detachably attached to the introduction portion 40. The long hole 51b also allows the cutting member 50 to advance and retreat in a direction perpendicular to the width direction of the introduction port 40a. As shown in Fig. 5(c), the cutting member 50 is advanced so that the blade portion 52 faces the introduction port 40a. As shown in Figs. 5(a) and 5(b), the cutting member 50 is retreated so that the blade portion 52 retreats from the introduction port 40a.

製管装置20を用いて、次のようなエキスパンダー製管工法によって管路1が更生される。
<元押し製管工程>
図7(a)に示すように、帯状部材10における後続帯部分19が、地上のドラム5から発進人孔4を経て、導入口40aに送り込まれる。後続帯部分19の幅方向は、導入口40aの幅方向と一致される。図5(a)に示すように、後続帯部分19の凸条14a,14b及びリブ15は外周側案内部41へ向けられ、内周側面10aは内周側案内部42へ向けられる。該後続帯部分19が、案内ローラ45,46に案内されながら導入部40内を下降して、製管部30へ導入される。
なお、切断部材50は、後述するフィニッシング処理まで退避位置(図5(a))に配置される。
Using the pipe making device 20, the pipeline 1 is rehabilitated by the following expander pipe making method.
<Main extrusion pipe making process>
As shown in Fig. 7(a), the trailing belt portion 19 of the belt-shaped member 10 is fed from the drum 5 on the ground through the starting manhole 4 to the introduction port 40a. The width direction of the trailing belt portion 19 coincides with the width direction of the introduction port 40a. As shown in Fig. 5(a), the protrusions 14a, 14b and the ribs 15 of the trailing belt portion 19 face the outer circumferential guide portion 41, and the inner peripheral side surface 10a faces the inner circumferential guide portion 42. The trailing belt portion 19 descends within the introduction portion 40 while being guided by the guide rollers 45, 46, and is introduced into the pipe making section 30.
The cutting member 50 is placed in a retracted position (FIG. 5A) until a finishing process, which will be described later, is performed.

図7(a)に示すように、製管部30においては、帯状部材10が外周規制体31の内周の螺旋方向に沿って巻回される。螺旋方向は更生管3の軸心が伸びる方向である。該帯状部材10の一周違いの隣接する縁部分13,14が、ピンチローラ32,33によって挟み付けられることで、対応する凹溝13a,13b及び凸条14a,14bどうしが凹凸嵌合される(図2(a)参照)。これによって、外周規制体31内において更生管3の新たな管端3eが形成されるとともに、該管端3eが回転されながら外周規制体31から押し出されて管路1内(図7(a)において右側)へ押し込まれる(元押し製管工程)。元押し製管時の更生管3の外径(製管径)は、外周規制体31によって、既設管路1の内径より小径になるよう規制される。外周規制体31の内径ひいては更生管3の外径は、径調節機構34によって調節される。 As shown in FIG. 7(a), in the pipe making section 30, the strip-shaped member 10 is wound along the spiral direction of the inner circumference of the outer periphery regulator 31. The spiral direction is the direction in which the axis of the rehabilitated pipe 3 extends. The adjacent edge portions 13, 14 of the strip-shaped member 10, which are one turn apart, are pinched by the pinch rollers 32, 33, so that the corresponding concave grooves 13a, 13b and convex strips 14a, 14b are fitted together (see FIG. 2(a)). As a result, a new pipe end 3e of the rehabilitated pipe 3 is formed within the outer periphery regulator 31, and the pipe end 3e is pushed out of the outer periphery regulator 31 while rotating and pushed into the pipeline 1 (to the right in FIG. 7(a)) (main extrusion pipe making process). The outer diameter (manufactured pipe diameter) of the rehabilitated pipe 3 during the main extrusion pipe making is regulated by the outer periphery regulator 31 to be smaller than the inner diameter of the existing pipeline 1. The inner diameter of the outer periphery restrictor 31, and therefore the outer diameter of the rehabilitation pipe 3, is adjusted by the diameter adjustment mechanism 34.

図2(a)に示すように、製管の際、第1凹溝13aには、第1凸条14aとの嵌合前に遅硬化性の接着剤17が充填される。なお、第2凹溝13bには、好ましくは帯状部材10の製造時にホットメルト接着剤18が充填されている。 As shown in FIG. 2(a), during pipe manufacturing, the first groove 13a is filled with a slow-curing adhesive 17 before engaging with the first ridge 14a. The second groove 13b is preferably filled with a hot melt adhesive 18 during the manufacture of the strip-shaped member 10.

<ワイヤ埋め込み工程>
図7(a)に示すように、前記元押し製管工程と併行して、切断用ワイヤ61が、繰出リール62から繰り出されて、帯状部材10の第1凸条14a及び第2凸条14bの間に挿し入れられるとともに縁部分13,14どうしの間に挟まれる(図2(a))。これによって、更生管3の全長にわたって切断用ワイヤ61の埋込部分61aが埋め込まれる。切断用ワイヤ61の埋込部分61aより先端側の引取部分61bは、更生管3の先端3fから引き出されて折り返され、更生管3の内部空間及び発進人孔4を通って、地上の巻取ウィンチ63(図1)に巻き付けられている。先端3fには、ワイヤ61の引出折返部61cが形成される。
<Wire embedding process>
As shown in Fig. 7(a), in parallel with the above-mentioned original pipe extrusion process, a cutting wire 61 is paid out from a pay-out reel 62 and inserted between the first convex strip 14a and the second convex strip 14b of the belt-shaped member 10 and sandwiched between the edge portions 13, 14 (Fig. 2(a)). As a result, the embedded portion 61a of the cutting wire 61 is embedded over the entire length of the rehabilitating pipe 3. The take-up portion 61b of the cutting wire 61 on the tip side of the embedded portion 61a is drawn out from the tip 3f of the rehabilitating pipe 3 and folded back, and passes through the internal space of the rehabilitating pipe 3 and the starting manhole 4, and is wound around a take-up winch 63 (Fig. 1) on the ground. A drawn-out folded-back portion 61c of the wire 61 is formed at the tip 3f.

<元押し製管工程の終了>
図7(b)に示すように、更生管3の先端3fが管路1の到達人孔4B側の管口1fに達するまで製管された後、製管装置20が停止され、先端3fが回り止め治具6によって回り止めされる。
<End of the main pipe making process>
As shown in Figure 7 (b), after the tip 3f of the rehabilitation pipe 3 has reached the pipe opening 1f on the arrival manhole 4B side of the pipeline 1, the pipe making device 20 is stopped and the tip 3f is prevented from rotating by the anti-rotation jig 6.

<周長可変処理工程>
続いて、図7(c)に示すように、巻取ウィンチ63の駆動によって、切断用ワイヤ61の引取部分61bが引き取られる。これによって、切断用ワイヤ61の埋込部分61aが更生管3の先端側(図7(c)において右側)から順次引き抜かれ、引出折返部61cが元押し側(図7(c)において左側)へ向けて螺旋状の巻き方向に沿って移行される。このとき、図2(b)に示すように、第2凸条14bの根元部分が、切断用ワイヤ61の引出折返部61cによって切断される。これによって、更生管3が周長可変処理される。更生管3における、第2凸条14bが切断用ワイヤ61によって切断された管部分3aは、捩じられることによって周長可変である。
<Circumference variable processing step>
Next, as shown in Fig. 7(c), the take-up winch 63 is driven to take up the take-up portion 61b of the cutting wire 61. As a result, the embedded portion 61a of the cutting wire 61 is successively pulled out from the tip side (right side in Fig. 7(c)) of the rehabilitating pipe 3, and the pull-out fold-back portion 61c is moved along the spiral winding direction toward the base push side (left side in Fig. 7(c)). At this time, as shown in Fig. 2(b), the root portion of the second convex strip 14b is cut by the pull-out fold-back portion 61c of the cutting wire 61. As a result, the rehabilitating pipe 3 is subjected to a circumferential length changing process. The pipe portion 3a of the rehabilitating pipe 3 where the second convex strip 14b has been cut by the cutting wire 61 is twisted to change its circumferential length.

<拡張工程>
図7(c)に示すように、巻取ウィンチ63の駆動と併行して、製管装置20(拡張用製管装置)の駆動が再開される。これによって、帯状部材10の後続帯部分19が導入部40から製管部30へ導入され、製管部30において、帯状部材10が螺旋方向に沿って巻回されて隣接する縁部分13,14どうしが凹凸嵌合される。これによって、更生管3の新たな管端3eが形成されるとともに該管端3eが管路1へ向けて捩じ込まれる。これによって、管部分3aに対して拡張方向の捩じり力(拡張力)が生じ、図2(c)に示すように、管部分3aにおける縁部分13,14どうしが螺旋方向に沿って互いにずれるように滑り、管部分3aの周長が拡張(拡径)される。
<Expansion process>
As shown in Fig. 7(c), in parallel with the driving of the winding winch 63, the driving of the pipe making device 20 (expansion pipe making device) is resumed. As a result, the succeeding strip portion 19 of the strip-shaped member 10 is introduced from the introduction section 40 into the pipe making section 30, where the strip-shaped member 10 is wound along the spiral direction so that the adjacent edge portions 13, 14 are fitted together. As a result, a new pipe end 3e of the rehabilitating pipe 3 is formed and the pipe end 3e is twisted toward the pipeline 1. As a result, a torsional force (expansion force) in the expansion direction is generated in the pipe portion 3a, and as shown in Fig. 2(c), the edge portions 13, 14 of the pipe portion 3a slide against each other along the spiral direction, expanding the circumferential length of the pipe portion 3a (diameter expansion).

図7(c)に示すように、拡張された管部分3aは、管路1の内周面に全周にわたって張り付き、大径管部3bとなる。拡張途中の管部分3aは、コーン部3cとなる。コーン部3cは、更生管3における元押し側の未だ周長可変処理されていない小径管部3dと、大径管部3bとの間に配置され、小径管部3d側から大径管部3b側へ向かって拡径する円錐台状になっている。周長可変処理工程及び拡張工程によって、大径管部3bが元押し側(図7(c)において左側)へ漸次延び、コーン部3cが元押し側すなわち製管装置20へ向けて漸次移行される。コーン部3cの長さを適切な範囲に収まるように管理することによって、バックリングや張り付き不足が起きないようにできる。 As shown in FIG. 7(c), the expanded pipe section 3a sticks to the inner surface of the pipeline 1 over the entire circumference, forming the large diameter pipe section 3b. The pipe section 3a in the process of being expanded becomes the cone section 3c. The cone section 3c is disposed between the small diameter pipe section 3d, which has not yet been subjected to the circumferential length changing process, and the large diameter pipe section 3b on the end of the rehabilitated pipe 3, and has a truncated cone shape that expands from the small diameter pipe section 3d side to the large diameter pipe section 3b side. Through the circumferential length changing process and the expansion process, the large diameter pipe section 3b gradually extends to the end side (left side in FIG. 7(c)), and the cone section 3c gradually moves toward the end side, i.e., toward the pipe making device 20. By controlling the length of the cone section 3c to be within an appropriate range, buckling and insufficient sticking can be prevented.

<フィニッシング処理>
図1に示すように、コーン部3cが製管装置20に対して所定距離以内まで近づいたとき、切断部材50によって、帯状部材10の後続帯部分19の第2凸条14b(凸条の一部)が切断される(製管前切断工程)。
詳しくは、製管装置20及び巻取ウィンチ63の駆動が一旦停止される。そのうえで、図5(b)の二点鎖線にて示すように、後続帯部分19の第2凸条14bにおける切断部材50との対向部分14b’が作業者によって切除される。後続帯部分19には、切除によって、凹部状の切断開始部19cが形成される。切除作業は、例えば製管装置20担当の作業者が、カッター等の切断工具を用いて手作業で行う。
<Finishing process>
As shown in Figure 1, when the cone portion 3c approaches within a predetermined distance from the pipe making device 20, the cutting member 50 cuts the second convex rib 14b (part of the convex rib) of the subsequent band portion 19 of the band-shaped member 10 (pre-pipe making cutting process).
More specifically, the operation of the pipe making device 20 and the winding winch 63 is temporarily stopped. Then, as shown by the two-dot chain line in Fig. 5(b), the portion 14b' of the second convex strip 14b of the trailing belt portion 19 facing the cutting member 50 is cut off by an operator. A concave-shaped cut start portion 19c is formed in the trailing belt portion 19 by the cutting. The cutting work is performed manually, for example, by an operator in charge of the pipe making device 20 using a cutting tool such as a cutter.

次に、図5(c)に示すように、取付用ボルト54を緩め、切断部材50を前進させて導入口40aに臨ませ、刃部52を、後続帯部分19の切断開始部19cに挿し入れる。これによって、刃先52aが、後続帯部分19における切断開始部19cの送り方向の上流側(図5(c)において上側)の第2凸条14bの根元部分と対向される。その後、取付用ボルト54を締め付けて、切断部材50を前進位置に固定する。 Next, as shown in FIG. 5(c), the mounting bolt 54 is loosened, the cutting member 50 is advanced to face the inlet 40a, and the blade portion 52 is inserted into the cutting start portion 19c of the trailing band portion 19. This causes the blade tip 52a to face the base portion of the second convex strip 14b on the upstream side (upper side in FIG. 5(c)) of the cutting start portion 19c of the trailing band portion 19 in the feed direction. The mounting bolt 54 is then tightened to fix the cutting member 50 in the advanced position.

続いて、製管装置20及び巻取ウィンチ63の駆動が再開される。すると、図6に示すように、後続帯部分19が導入部40へ向かって下降されることで、刃先52aが、切断開始部19cより送り方向の上流側(図6において上側)の第2凸条14bの根元部分に食い込み、該第2凸条14bを切断する。言い換えると、製管前の後続帯部分19が製管装置20へ送り込まれる際、第2凸条14b(縁部分14の凸条の一部)が切断部材50によって連続的に、かつ自動的に切断される。したがって、製管装置20担当の作業者が手作業で第2凸条14bを連続切断する必要が無く、負担を軽減できる。よって、作業者は、帯状部材10の凹凸嵌合の確認、接着剤17の充填確認、切断用ワイヤ61の挿入位置の確認などを適切に行うことができる。凹凸嵌合の不具合等のトラブル発生時には、すばやく対応できる。 Then, the operation of the pipe making device 20 and the winding winch 63 is resumed. Then, as shown in FIG. 6, the trailing strip portion 19 is lowered toward the introduction portion 40, and the blade tip 52a bites into the root portion of the second convex strip 14b upstream of the cutting start portion 19c in the feed direction (upper side in FIG. 6), and cuts the second convex strip 14b. In other words, when the trailing strip portion 19 before pipe making is fed into the pipe making device 20, the second convex strip 14b (part of the convex strip of the edge portion 14) is continuously and automatically cut by the cutting member 50. Therefore, the worker in charge of the pipe making device 20 does not need to continuously cut the second convex strip 14b by hand, and the burden can be reduced. Therefore, the worker can appropriately check the concave-convex fit of the strip-shaped member 10, check the filling of the adhesive 17, check the insertion position of the cutting wire 61, etc. When a problem such as a problem with the concave-convex fit occurs, it can be quickly dealt with.

図1に示すように、第2凸条14bが切断された後続帯部分19は、製管装置20によって更生管3の小径管部3dに組み込まれ、切断開始部19cが小径管部3d内に配置される。この段階の小径管部3dにおける管端3eから切断開始部19cまでの管部分3gは、それよりコーン部3c側の第2凸条14bが切断されていない管部分3hと、外周規制体31とによって拘束されている。したがって、管部分3gの周長が変わることはなく、小径管部3dの管部分3g,3hが一体に回転される。 As shown in FIG. 1, the trailing band portion 19 where the second ridge 14b has been cut is assembled into the small diameter pipe section 3d of the rehabilitated pipe 3 by the pipe making device 20, and the cut start portion 19c is positioned within the small diameter pipe section 3d. At this stage, the pipe section 3g from the pipe end 3e to the cut start portion 19c in the small diameter pipe section 3d is restrained by the pipe section 3h on the cone section 3c side where the second ridge 14b has not been cut, and by the outer periphery regulating body 31. Therefore, the circumferential length of the pipe section 3g does not change, and the pipe sections 3g and 3h of the small diameter pipe section 3d rotate together.

引き続き、製管装置20及び巻取ウィンチ63の駆動によって、管部分3gが押し出し方向の先端側(図1において右側)へ延びる。コーン部3cは、元押し側(図1において左側)へ移行される。やがて、図8(a)及び図9に示すように、切断開始部19cが引出折返部61cに達し、管部分3gがコーン部3cと合流する。すなわち、更生管3を構成する帯状部材10における、第2凸条14bが切断部材50で切断された部分と、第2凸条14bが切断用ワイヤ61で切断された部分とが合流する。 Continuing, the pipe making device 20 and the winding winch 63 are driven to extend the pipe section 3g toward the tip side in the extrusion direction (to the right in FIG. 1). The cone section 3c is moved toward the base pushing side (to the left in FIG. 1). Eventually, as shown in FIG. 8(a) and FIG. 9, the cutting start section 19c reaches the pull-out fold section 61c, and the pipe section 3g merges with the cone section 3c. That is, the section of the band-shaped member 10 constituting the rehabilitated pipe 3 where the second ridge 14b has been cut by the cutting member 50 and the section where the second ridge 14b has been cut by the cutting wire 61 merge together.

合流後、巻取ウィンチ63が停止され、さらに回転フリーにされる。
製管装置20は、合流後もしばらく駆動され、第2凸条14bが切断された後続帯部19が、更生管3の管端3eに送り込まれる。これによって、図8(b)に示すように、管部分3gがコーン状になり、コーン部3cと管部分3gとが1つの終端コーン部3iとなる。
After the merging, the winding winch 63 is stopped and is free to rotate.
The pipe making device 20 is driven for a while after the merging, and the subsequent belt portion 19 where the second ridge 14b has been cut off is sent to the pipe end 3e of the rehabilitating pipe 3. As a result, as shown in Figure 8 (b), the pipe portion 3g becomes cone-shaped, and the cone portion 3c and the pipe portion 3g become one terminal cone portion 3i.

その後、製管装置20が停止される。
続いて、図8(b)の一点鎖線CLにて示すように、更生管3における製管装置30と管口1eとの間の部分が切断され、製管装置20が更生管3から切り離される。
図8(c)に示すように、切り離された製管装置20は撤去される。これによって、終端コーン部3iが解放されて自然拡径される。終端コーン部3iを人力で直接又は工具を使って捩じって拡径させてもよい。このようにして、管路1の全長にわたって、管路1の内周面に更生管3を密着させることで、管路1が更生される。
The pipe making machine 20 is then stopped.
Next, as shown by the dashed dotted line CL in FIG. 8( b ), the portion of the rehabilitating pipe 3 between the pipe making device 30 and the pipe opening 1 e is cut, and the pipe making device 20 is separated from the rehabilitating pipe 3 .
As shown in Fig. 8(c), the separated pipe making device 20 is removed. This releases the end cone portion 3i and allows it to expand in diameter naturally. The end cone portion 3i may be expanded in diameter by twisting it directly by hand or by using a tool. In this way, the rehabilitating pipe 3 is brought into close contact with the inner peripheral surface of the pipeline 1 over the entire length of the pipeline 1, thereby rehabilitating the pipeline 1.

次に、本発明の他の実施形態を説明する。以下の実施形態において、既述の形態と重複する構成に関しては、図面に同一符号を付して説明を省略する。
<第2実施形態(図10~図12)>
図10に示すように、帯状部材10には、通常、製管装置20へ導入される前から巻き癖が付けられることで、内周側面10aが凹曲面となるよう湾曲されている。ドラム5(図1参照)等に巻かれていたときに塑性変形したり、巻き癖付与機(図示省略)で巻き癖を付与されたりするからである。このため、図10において仮想線にて示すように、導入口40aにおいて、後続帯部分19が、前進位置の切断部材50から左右方向の内側(図10において右側)へ逃げてしまうおそれがある。
Next, another embodiment of the present invention will be described. In the following embodiment, the same reference numerals are given to the same components as those in the above-described embodiment, and the description thereof will be omitted.
Second embodiment (FIGS. 10 to 12)
As shown in Fig. 10, the belt-shaped member 10 is usually curled before being introduced into the pipe making device 20, so that the inner peripheral side surface 10a is curved to be a concave surface. This is because the belt-shaped member 10 is plastically deformed while being wound around the drum 5 (see Fig. 1) or the like, or the curl is imparted to the belt by a curl imparting machine (not shown). For this reason, as shown by the phantom line in Fig. 10, at the introduction port 40a, there is a risk that the trailing belt portion 19 will escape inward in the left-right direction (to the right in Fig. 10) from the cutting member 50 in the forward position.

そこで、第2実施形態においては、図10に示すように、導入部40に後続帯部分19の左右方向への移動を規制する規制ユニット70が設けられている。規制ユニット70は、規制部材71と、規制支持部材72と、一対の連結部材73を含む。図10及び図11に示すように、規制部材71は、帯状部材10の幅よりも幅広のブロック状ないしは厚板状に形成され、内周側案内部42の半割筐体44の上面に載置されている。規制部材71の上端部は、切断部材50よりも上方(後続帯部分19が導入される方向の上流側)に突出されている。 In the second embodiment, as shown in FIG. 10, the introduction section 40 is provided with a regulating unit 70 that regulates the left-right movement of the trailing strip portion 19. The regulating unit 70 includes a regulating member 71, a regulating support member 72, and a pair of connecting members 73. As shown in FIG. 10 and FIG. 11, the regulating member 71 is formed in a block or thick plate shape that is wider than the width of the strip member 10, and is placed on the upper surface of the half housing 44 of the inner circumferential guide section 42. The upper end of the regulating member 71 protrudes upward (upstream in the direction in which the trailing strip portion 19 is introduced) above the cutting member 50.

図10及び図11に示すように、外周側案内部41の半割筐体43の上面には、規制支持部材72が載置されている。規制支持部材72は、規制部材71とほぼ同じ幅及び高さのブロック状ないしは厚板状に形成されている。規制部材71と規制支持部材72とが、製管装置20の左右方向(図10において左右方向)に対向している。好ましくは、規制部材71と規制支持部材72との対向面どうし間の距離D70は、帯状部材10の厚みt10と略等しいか僅かに大きい。詳細な図示は省略するが、規制部材71及び規制支持部材72のうち一方が、ボルト締め又は溶接等の固定手段(図示せず)によって半割筐体43又は44に固定されている。規制部材71及び規制支持部材72の両方が半割筐体43,44に固定されていてもよい。 As shown in Figures 10 and 11, a regulating support member 72 is placed on the upper surface of the half housing 43 of the outer circumferential guide section 41. The regulating support member 72 is formed in a block shape or thick plate shape with approximately the same width and height as the regulating member 71. The regulating member 71 and the regulating support member 72 face each other in the left-right direction of the pipe making device 20 (left-right direction in Figure 10). Preferably, the distance D70 between the facing surfaces of the regulating member 71 and the regulating support member 72 is approximately equal to or slightly larger than the thickness t10 of the strip-shaped member 10. Although detailed illustration is omitted, one of the regulating member 71 and the regulating support member 72 is fixed to the half housing 43 or 44 by a fixing means (not shown) such as bolting or welding. Both the regulating member 71 and the regulating support member 72 may be fixed to the half housing 43, 44.

さらに図11に示すように、規制ユニット70の幅方向(図11において左右方向)の両端部には、それぞれ連結部材73が設けられている。連結部材73は、規制部材71及び規制支持部材72に架け渡された連結ボルト73aと、該連結ボルト73aに螺合されたナット73bとを含む。各連結部材73によって、規制部材71及び規制支持部材72の幅方向の互いに同じ側の端部どうしが連結されている。これによって、前記離間距離D70が保持されている。 11, connecting members 73 are provided at both ends in the width direction (left and right direction in FIG. 11) of the regulating unit 70. The connecting members 73 include a connecting bolt 73a that is spanned between the regulating member 71 and the regulating support member 72, and a nut 73b that is screwed onto the connecting bolt 73a. Each connecting member 73 connects the ends of the regulating member 71 and the regulating support member 72 on the same side in the width direction. This maintains the separation distance D70 .

規制支持部材72は、切断部材50に被さっている。規制部材72には、切断部材50との干渉を避けるための凹部72bが形成されている。図11及び図12に示すように、外周側案内部41に対して固定の規制支持部材72に対して、切断部材50が、規制部材71と規制支持部材72との対向方向(図11、図12において上下方向)へスライド可能である。 The restricting support member 72 covers the cutting member 50. The restricting member 72 has a recess 72b formed therein to avoid interference with the cutting member 50. As shown in Figs. 11 and 12, the cutting member 50 can slide relative to the restricting support member 72, which is fixed to the outer circumferential guide portion 41, in the opposing direction of the restricting member 71 and the restricting support member 72 (the up-down direction in Figs. 11 and 12).

第2実施形態においては、後続帯部分19が、導入口40aへの導入前に規制部材71と規制支持部材72との間に通される。このとき、規制部材71によって後続帯部分19の内周側面10aが押えられる。図12に示すように、フィニシング処理前は、切断部材50を規制支持部材72の凹部72b内に引っ込むように退避させておく。したがって、凸条14bが切断されるのを回避できる。 In the second embodiment, the trailing band portion 19 is passed between the regulating member 71 and the regulating support member 72 before being introduced into the inlet 40a. At this time, the regulating member 71 presses the inner peripheral side surface 10a of the trailing band portion 19. As shown in FIG. 12, before the finishing process, the cutting member 50 is retracted so as to retract into the recess 72b of the regulating support member 72. This prevents the protruding strip 14b from being cut.

図10及び図11に示すように、フィニシング処理時には切断部材50を前進させて導入口40aに臨ませることで、刃部42によって凸条14bを切断する。このとき、後続帯部分19に巻き癖が付いていたとしても、規制部材71によって後続帯部分19を内周側(図10において右側)から押さえることで、後続帯部分19が切断部材50から離間するのを防止できる。これによって、凸条14bを確実に切断することができる。 As shown in Figures 10 and 11, during the finishing process, the cutting member 50 is advanced to face the inlet 40a, and the blade 42 cuts the ridge 14b. At this time, even if the trailing band portion 19 has a curled tendency, the restricting member 71 holds the trailing band portion 19 from the inner periphery (the right side in Figure 10), preventing the trailing band portion 19 from separating from the cutting member 50. This ensures that the ridge 14b is cut.

<第2実施形態の変形例1(図13)>
図13に示す第2実施形態の変形例では、切断部材50が、規制支持部材72に固定されている。規制支持部材72は、切断部材50と一体になって、規制部材71と規制支持部材72との対向方向(図13において上下方向)へスライド可能である。好ましくは、規制部材71は、内周側案内部42にボルト締め又は溶接等の固定手段によって固定されている。規制支持部材72が、規制部材71に対し接近離間可能である。
<Modification 1 of the second embodiment (FIG. 13)>
In a modification of the second embodiment shown in Fig. 13, the cutting member 50 is fixed to a restrictive support member 72. The restrictive support member 72 is slidable integrally with the cutting member 50 in the opposing direction between the restrictive member 71 and the restrictive support member 72 (up and down direction in Fig. 13). Preferably, the restrictive member 71 is fixed to the inner circumference side guide portion 42 by a fixing means such as bolting or welding. The restrictive support member 72 is movable toward and away from the restrictive member 71.

図13に示すように、フィニシング処理前は、ナット73bを緩めて、規制支持部材72を規制部材71から離間させておく。これによって、規制支持部材72と一体の切断部材50を退避位置に配置でき、凸条14bが切断されるのを回避できる。 As shown in FIG. 13, before the finishing process, the nut 73b is loosened to separate the regulating support member 72 from the regulating member 71. This allows the cutting member 50, which is integrated with the regulating support member 72, to be placed in a retracted position, and cutting of the protruding strip 14b can be avoided.

フィニシング処理時には、ナット73bをねじ込むことによって規制支持部材72を規制部材72に接近させる(図12参照)。これによって、切断部材50を前進させて、凸条14bを切断することができる。 During the finishing process, the nut 73b is screwed in to bring the restricting support member 72 closer to the restricting member 72 (see FIG. 12). This allows the cutting member 50 to move forward and cut the ridge 14b.

<第2実施形態の変形例2(図14)>
図14に示す第2実施形態の変形例では、規制ユニット70が、規制部材71だけで構成され、規制支持部材72(図10~図12)は省略されている。規制支持部材72が無くても、規制部材71によって後続帯部分19を内周側から押さることで、フィニシング処理時に後続帯部分19が切断部材50から逃げるのを防止することができる。
<Modification 2 of the Second Embodiment (FIG. 14)>
In the modified example of the second embodiment shown in Fig. 14, the regulating unit 70 is composed of only the regulating member 71, and the regulating support member 72 (Figs. 10 to 12) is omitted. Even without the regulating support member 72, the regulating member 71 presses the trailing strip portion 19 from the inner periphery side, thereby preventing the trailing strip portion 19 from escaping from the cutting member 50 during the finishing process.

<第2実施形態の変形例3(図15)>
規制部材71の形状はブロック状又は板状に限らない。
図15の変形例では、同図(a)に示すように、規制部材71Bが、円筒ロール74と、該円筒ロール74の両端部を回転可能に支持する一対の回転支持部75を含む。ロール74の回転軸は、製管部30(図1参照)の軸線L30と平行に向けられている。図15(b)に示すように、ロール74が、後続帯部分19と接触されるとともに、後続帯部分19が導入部40へ送られるのに伴って回転される。これによって、規制部材71Bと後続帯部分19との間の摩擦を低減できる。
<Modification 3 of the second embodiment (FIG. 15)>
The shape of the regulating member 71 is not limited to a block shape or a plate shape.
In the modified example of Fig. 15(a), as shown in the same figure, the regulating member 71B includes a cylindrical roll 74 and a pair of rotation support parts 75 that rotatably support both ends of the cylindrical roll 74. The rotation axis of the roll 74 is oriented parallel to the axis L30 of the pipe making section 30 (see Fig. 1). As shown in Fig. 15(b), the roll 74 comes into contact with the trailing belt portion 19 and is rotated as the trailing belt portion 19 is sent to the introduction section 40. This makes it possible to reduce friction between the regulating member 71B and the trailing belt portion 19.

<第2実施形態の変形例4(図16)>
図16に示す変形例では、規制部材71Cが、枠状ないしは梯子状に形成されている。詳しくは、規制部材71Cは、上下複数段(ここでは2段)の梁部76,77と、これら梁部76,77の両端部を支持する一対の柱部78とを含む。
<Fourth Modification of the Second Embodiment (FIG. 16)>
16, the restricting member 71C is formed in a frame or ladder shape. In detail, the restricting member 71C includes upper and lower multiple stages (two stages in this case) of beams 76, 77 and a pair of pillars 78 supporting both ends of the beams 76, 77.

本発明は、前記実施形態に限定されるものではなく、その趣旨を逸脱しない範囲において種々の改変をなすことができる。
例えば、切断部材50は、フィニシング処理前は製管装置20から取り外しておき、フィニシング処理時に導入部40に取り付けてもよい。
The present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the present invention.
For example, the cutting member 50 may be removed from the pipe making apparatus 20 before the finishing process, and then attached to the introduction section 40 during the finishing process.

本発明は、例えば老朽化した下水道管の更生施工に適用可能である。 The present invention can be applied, for example, to the rehabilitation of aging sewer pipes.

1 管路(更生対象)
3 更生管
3a,3g 周長可変処理された管部分
3b 大径管部
3c コーン部
3d 小径管部
3e 発進側管端
3i 終端コーン部
4 発進人孔
10 帯状部材
10a 内周側面
13 縁部分
14 1の縁部分
14a 第1凸条
14b 第2凸条(凸条の一部)
19 後続帯部分
19c 切断開始部
20 元押し式製管装置(拡張用製管装置)
30 製管部
31 外周規制体
40 導入部
40a 導入口
41 外周側案内部
42 内周側案内部
50 切断部材
51 ベース部
51b 長孔
52 刃部
52a 刃先
53 補強壁
54 取付用ボルト
61 切断用ワイヤ
61c 引出折返部
70 規制ユニット
71 規制部材
71B,71C 規制部材
72 規制支持部材
73 連結部材
74 ロール
76,77 梁部
1. Pipeline (rehabilitation target)
3 Rehabilitation pipe 3a, 3g Pipe portion subjected to variable circumferential length treatment 3b Large diameter pipe portion 3c Cone portion 3d Small diameter pipe portion 3e Starting side pipe end 3i Terminal cone portion 4 Starting manhole 10 Belt-shaped member 10a Inner peripheral side surface 13 Edge portion 14 Edge portion 14a of 1 First convex strip 14b Second convex strip (part of convex strip)
19 Trailing belt portion 19c Cutting start portion 20 Push-type pipe making device (expansion pipe making device)
Reference Signs List 30 Pipe making section 31 Outer circumference regulating body 40 Introduction section 40a Introduction port 41 Outer circumference guide section 42 Inner circumference guide section 50 Cutting member 51 Base section 51b Long hole 52 Blade section 52a Blade tip 53 Reinforcing wall 54 Mounting bolt 61 Cutting wire 61c Pull-out folded-back section 70 Regulating unit 71 Regulating members 71B, 71C Regulating members 72 Regulating support member 73 Connecting member 74 Rolls 76, 77 Beam section

Claims (6)

更生対象の管路内に配置された螺旋管状の更生管の周長可変処理された管部分の周長を拡張させる製管装置であって、
前記更生管を構成する帯状部材を螺旋方向に沿って巻回して該帯状部材の一周違いの隣接する縁部分どうしを凹凸嵌合させることによって前記更生管の新たな管端を形成するとともに該管端を前記螺旋方向にねじ込んで前記管部分に対する拡張力を得る製管部と、
前記帯状部材における前記管端に連なる後続帯部分を前記製管部へ導入する導入口を有する導入部と、
前記導入口に臨むようにして前記導入部に進退可能又は着脱可能に設けられ、前記帯状部材の1の縁部分に形成された前記凹凸嵌合用の凸条の一部を切断する切断部材と、
を備えた更生管拡張用の製管装置。
A pipe manufacturing apparatus for expanding a circumferential length of a pipe portion that has been subjected to a circumferential length variable treatment of a spiral pipe that is disposed in a pipeline to be rehabilitated, comprising:
a pipe manufacturing section that forms a new pipe end of the rehabilitating pipe by winding a strip-shaped member constituting the rehabilitating pipe in a spiral direction and fitting adjacent edge portions of the strip-shaped member one turn apart into a recessed and projecting engagement, and that screws the pipe end in the spiral direction to obtain an expansion force for the pipe portion;
an introduction section having an introduction port for introducing a subsequent strip portion of the strip member connected to the tube end into the tube making section;
a cutting member provided in the introduction section so as to be movable forward and backward or detachable in the introduction section so as to face the introduction port, the cutting member cutting a part of the projection for engagement formed on one edge portion of the belt-shaped member;
A pipe manufacturing device for expanding rehabilitated pipes.
前記切断部材が、前記導入部に取り付けられるベース部と、前記ベース部から前記後続帯部分が導入される方向の上流側へ向けて突出された刃部とを含む請求項1に記載の製管装置。 The pipe making device according to claim 1, wherein the cutting member includes a base portion attached to the introduction portion and a blade portion protruding from the base portion toward the upstream side in the direction in which the trailing band portion is introduced. 前記ベースには、前記導入部との取付用のボルトが挿通される長孔が形成されており、
前記後続帯部分の幅方向と、前記長孔の長手方向とが、互いに直交している請求項2に記載の製管装置。
The base has a long hole through which a bolt for attachment to the introduction portion is inserted,
3. A pipe making apparatus according to claim 2, wherein the width direction of the trailing band portion and the longitudinal direction of the long hole are perpendicular to each other.
前記導入部が、前記後続帯部分の前記凸条が向けられる外周側案内部と、前記後続帯部分の内周側面が向けられる内周側案内部とを有し、これら案内部どうし間に前記導入口が形成されており、
前記切断部材が、前記外周側案内部に設けられている請求項1~3の何れか1項に記載の製管装置。
the introduction portion has an outer circumferential guide portion to which the protrusion of the trailing band portion is directed and an inner circumferential guide portion to which the inner circumferential side surface of the trailing band portion is directed, and the introduction port is formed between these guide portions;
A pipe making apparatus according to any one of claims 1 to 3, wherein the cutting member is provided on the outer circumferential guide portion.
前記内周側案内部には、前記後続帯部分の前記内周側面を押える規制部材が、前記切断部材よりも前記後続帯部分が導入される方向の上流側に突出するように設けられている請求項4に記載の製管装置。 The pipe making device according to claim 4, wherein the inner circumferential guide portion is provided with a restricting member that presses the inner circumferential side surface of the trailing band portion so as to protrude upstream of the cutting member in the direction in which the trailing band portion is introduced. 前記外周側案内部には規制支持部材が前記規制部材と対向するように設けられ、前記規制支持部材及び前記規制部材の幅方向の互いに同じ側の端部どうしが連結部材によって連結されている請求項5に記載の製管装置。 A pipe manufacturing apparatus as described in claim 5, in which a regulating support member is provided in the outer circumferential guide portion so as to face the regulating member, and the ends of the regulating support member and the regulating member on the same side in the width direction are connected to each other by a connecting member.
JP2022200416A 2022-12-15 2022-12-15 Pipe making equipment for expanding rehabilitated pipes Pending JP2024085730A (en)

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