JP6927782B2 - Spiral tube making device - Google Patents

Spiral tube making device Download PDF

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JP6927782B2
JP6927782B2 JP2017139851A JP2017139851A JP6927782B2 JP 6927782 B2 JP6927782 B2 JP 6927782B2 JP 2017139851 A JP2017139851 A JP 2017139851A JP 2017139851 A JP2017139851 A JP 2017139851A JP 6927782 B2 JP6927782 B2 JP 6927782B2
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pipe
guide
drive unit
spiral
strip
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JP2019018474A (en
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達郎 馬場
達郎 馬場
菅原 宏
宏 菅原
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Sekisui Chemical Co Ltd
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Description

本発明は、帯状部材を螺旋状に巻回することによって螺旋管を製造する製管装置に関し、特に、螺旋状の巻回方向に沿って推進しながら製管する自走式かつ非内周規制構造の製管装置に関する。 The present invention relates to a pipe making device that manufactures a spiral pipe by winding a strip-shaped member in a spiral shape, and in particular, a self-propelled and non-inner circumference regulation that manufactures a pipe while propelling along the spiral winding direction. Regarding structural pipe making equipment.

老朽化した下水管等の既設管を螺旋管状の更生管でライニングすることによって更生することは公知である。更生管の一例として、合成樹脂製の帯状部材を螺旋状に巻回することにより形成される螺旋管が知られている。 It is known that an existing pipe such as an aged sewer pipe is rehabilitated by lining it with a spiral tubular rehabilitation pipe. As an example of the rehabilitation tube, a spiral tube formed by spirally winding a band-shaped member made of synthetic resin is known.

螺旋管を製管する製管装置として、所謂自走式の製管装置が知られている(特許文献1〜3等参照)。この種の製管装置は、帯状部材における先行して螺旋状に製管された先行管部の延伸端部に配置されている。そして、前記先行管部に続く未製管の後続帯部の縁を、先行管部の一周先行する対応縁と嵌合させる。嵌合に伴って、製管装置が、螺旋状の巻回方向に沿って自走(推進)される。これによって、螺旋管が漸次延伸される。 As a pipe making device for making a spiral pipe, a so-called self-propelled pipe making device is known (see Patent Documents 1 to 3 and the like). This type of pipe making device is arranged at the extended end of the leading pipe portion that is spirally made in advance in the strip-shaped member. Then, the edge of the trailing band portion of the unmade pipe following the leading pipe portion is fitted with the corresponding edge that precedes one round of the leading pipe portion. Along with the fitting, the pipe making device is self-propelled (propelled) along the spiral winding direction. As a result, the spiral tube is gradually stretched.

特許文献1の製管装置は、所謂リンクローラと称される環状の内周規制体を備えている。該内周規制体に先行管部の延伸端部が巻き付けられる。ひいては、内周規制体によって螺旋管の断面(形状及び直径ないしは周長を含む)が内周側から規制されている。 The pipe making device of Patent Document 1 includes an annular inner circumference regulator called a so-called link roller. The extended end of the leading pipe is wound around the inner peripheral regulator. As a result, the cross section (including shape and diameter or circumference) of the spiral tube is regulated from the inner circumference side by the inner circumference regulator.

特許文献2の製管装置においては、内周規制体として、複数の支持アームが放射状に延びている。これら支持アームの先端部の案内ローラが、先行管部の延伸端部に押し当てられることで、先行管部ひいては螺旋管の断面が内周側から規制されている。 In the pipe making device of Patent Document 2, a plurality of support arms extend radially as an inner peripheral restrictor. By pressing the guide roller at the tip of these support arms against the extended end of the leading pipe, the cross section of the leading pipe and thus the spiral pipe is regulated from the inner peripheral side.

特許文献3の製管装置は、駆動部と、管端ガイドを備える一方で、内周規制体を有しない非内周規制構造になっている。このため、延伸端部が内周側へ解放されている。管端ガイドは、先行管部の延伸端部の外周側のガイドと、内周側のガイドを含み、先行管部の延伸端部にスライド可能かつ摩擦抵抗を発現可能に係止される。駆動部の一対の駆動ローラによって、帯状部材における既に螺旋状に製管された先行管部に連なる後続帯部を、前記先行管部の内周側から斜め外側へ押し出す。この押し出し力によって、後続帯部の縁を先行管部の一周先行する対応縁と嵌合させる。このとき、管端ガイドが嵌合力を受ける。かつ、嵌合によって推進反力が生じ、製管装置が螺旋状の巻回方向に沿って推進(自走)される。 The pipe making device of Patent Document 3 has a non-inner circumference regulation structure which includes a drive unit and a pipe end guide but does not have an inner circumference regulation body. Therefore, the stretched end portion is released to the inner peripheral side. The pipe end guide includes a guide on the outer peripheral side of the extended end portion of the leading pipe portion and a guide on the inner peripheral side, and is slidably locked to the extended end portion of the leading pipe portion so as to exhibit frictional resistance. The pair of drive rollers of the drive unit pushes the trailing band portion connected to the preceding pipe portion already spirally formed in the strip-shaped member from the inner peripheral side of the leading pipe portion to the diagonally outward side. By this pushing force, the edge of the trailing band portion is fitted with the corresponding edge that precedes one round of the leading pipe portion. At this time, the pipe end guide receives the fitting force. In addition, a propulsion reaction force is generated by the fitting, and the pipe making device is propelled (self-propelled) along the spiral winding direction.

特許第4866428号公報Japanese Patent No. 4866428 特許第4505142号公報Japanese Patent No. 4505142 国際公開WO2016/175243International release WO 2016/175243

前記非内周規制構造の自走式製管装置(特許文献3)においては、帯状部材の未製管の後続帯部における駆動部から押し出されてから先行管部と嵌合されるまでの間の後続帯部分が、本来の軌道から外れるおそれがある。例えば、帯状部材の剛性が低いと、前記後続帯部分が座屈して大きく折れ曲がりやすい。そうすると、後続帯部分と先行管部とが嵌合できなくなる。一方、帯状部材の剛性が高いと、後続帯部分を先行管部に沿わせるように変形させにくく、管端ガイドの特に外周側のガイドが過大な負荷を受けて変形や破損等の損傷を受けるおそれがある。
本発明は、かかる事情に鑑み、非内周規制構造の自走式製管装置において、帯状部材の未製管の後続帯部が駆動部から押し出されてから先行管部と嵌合されるまでの間、本来の軌道から外れて座屈したり、管端ガイドを損傷させたりするのを防止可能な製管装置を提供することを目的とする。
In the self-propelled pipe making device (Patent Document 3) having the non-inner circumference regulation structure, from the time when the strip-shaped member is extruded from the drive portion in the succeeding belt portion of the unmade pipe to the time when it is fitted with the preceding pipe portion. There is a risk that the trailing band part of the will deviate from the original orbit. For example, if the rigidity of the strip-shaped member is low, the trailing strip portion is buckled and easily bent greatly. Then, the trailing band portion and the leading pipe portion cannot be fitted. On the other hand, if the rigidity of the strip-shaped member is high, it is difficult to deform the trailing strip portion along the leading pipe portion, and the guide on the outer peripheral side of the pipe end guide in particular receives an excessive load and is damaged such as deformation or breakage. There is a risk.
In view of such circumstances, in the self-propelled pipe making device having a non-inner circumference regulation structure, the present invention is from the time when the trailing strip portion of the unmade pipe of the strip-shaped member is extruded from the drive portion to the time when it is fitted with the preceding pipe portion. During the period, it is an object of the present invention to provide a pipe making device capable of preventing buckling or damaging the pipe end guide from the original trajectory.

前記課題を解決するため、本発明は、螺旋管となるべき帯状部材における先行して螺旋状に製管された先行管部の延伸端部を内周側へ解放させた状態で、前記先行管部に続く未製管の後続帯部を、前記先行管部の延伸端部の内周側から斜めに押し出し、該押し出し力によって前記後続帯部の縁を前記延伸端部の一周先行する対応縁と嵌合させるとともに螺旋状の巻回方向に沿って推進される、螺旋管の製管装置であって、
前記後続帯部を挟む少なくとも一対の駆動ローラと、前記駆動ローラを保持する駆動部フレームとを有して、前記後続帯部に前記押し出し力を付与する駆動部と、
前記駆動部フレームに連結されたガイドフレームと、
前記ガイドフレームに設けられ、前記先行管部の延伸端部に係止される管端ガイドと、
前記駆動部フレームから前記押し出し方向に沿って延び、前記後続帯部における前記押し出されてから前記嵌合されるまでの間の後続帯部分をガイドする軌道ガイドと、
を備えたことを特徴とする。
In order to solve the above-mentioned problems, in the present invention, the leading pipe is in a state where the extended end portion of the leading pipe portion formed in a spiral shape in advance in the strip-shaped member to be a spiral pipe is released to the inner peripheral side. The trailing band portion of the unmade pipe following the portion is extruded diagonally from the inner peripheral side of the extended end portion of the preceding pipe portion, and the edge of the trailing band portion is preceded by one round of the extended end portion by the pushing force. A spiral tube making device that is fitted with and propelled along the spiral winding direction.
A drive unit having at least a pair of drive rollers that sandwich the trailing band portion and a drive unit frame that holds the drive rollers, and applying the pushing force to the trailing band portion.
A guide frame connected to the drive unit frame and
A pipe end guide provided on the guide frame and locked to the extension end of the leading pipe portion,
A track guide that extends from the drive unit frame along the extrusion direction and guides the trailing band portion in the trailing band portion from the extrusion to the fitting.
It is characterized by being equipped with.

当該製管装置によれば、軌道ガイドによって後続帯部分を案内することによって、後続帯部分が本来の軌道から外れて脱線するのを防止できる。帯状部材の剛性が低くても、後続帯部分が座屈して大きく折れ曲がるのを防止できる。帯状部材の剛性が高くても、後続帯部分が押し出し方向の下流側へ向かうにしたがって先行管部に漸次沿うようにでき、管端ガイドへの負荷を軽減して損傷を防止できる。この結果、帯状部材が低剛性であるか高剛性であるかに拘わらず、後続帯部分を先行管部の一周先行部分と確実に嵌合させ、螺旋管を製管することができる。
ここで、「延伸端部」とは、先行管部が管軸に沿って延伸されていく方向(延伸方向)の前端の約一周部分を言う。延伸方向の前方を「延伸前方」と称し、延伸方向の後方を「延伸後方」と称す。
好ましくは、前記押し出し方向は、前記駆動部フレームから、装置高さ方向の基部側かつ推進後方へ向けられる。前記装置高さ方向は、推進前後方向とも装置幅方向とも直交する方向であり、概略、螺旋管の管内外方向へ向けられる。前記装置高さ方向の基部側は、螺旋管の外周側へ向けられ、装置高さ方向の頂部側は、螺旋管の内周側へ向けられる。
前記延伸端部が内周側へ解放された状態とは、前記製管装置が、前記先行管部の延伸端部の断面(形状、周長、直径)を内周側から規制する内周規制体を有しない非内周規制構造になっており、前記延伸端部が、内周規制体によって内周側から規制されていない状態を言う。
According to the pipe making device, by guiding the trailing band portion by the track guide, it is possible to prevent the trailing band portion from derailing from the original track. Even if the rigidity of the strip-shaped member is low, it is possible to prevent the trailing strip portion from buckling and bending significantly. Even if the rigidity of the strip-shaped member is high, the trailing strip portion can be gradually along the leading pipe portion toward the downstream side in the extrusion direction, and the load on the pipe end guide can be reduced to prevent damage. As a result, regardless of whether the strip-shaped member has low rigidity or high rigidity, the trailing strip portion can be reliably fitted with the one-circling leading portion of the leading pipe portion, and the spiral pipe can be manufactured.
Here, the "stretched end portion" refers to a portion about one circumference of the front end in the direction in which the leading pipe portion is stretched along the pipe axis (stretching direction). The front in the stretching direction is referred to as "forward stretching", and the rear in the stretching direction is referred to as "rear stretching".
Preferably, the pushing direction is directed from the drive frame to the base side and the propulsion rear in the device height direction. The height direction of the device is a direction orthogonal to both the front-rear direction of propulsion and the width direction of the device, and is generally directed toward the inside and outside of the spiral tube. The base side in the device height direction is directed to the outer peripheral side of the spiral tube, and the top side in the device height direction is directed to the inner peripheral side of the spiral tube.
The state in which the stretched end portion is released to the inner peripheral side means that the pipe making device regulates the cross section (shape, circumference, diameter) of the stretched end portion of the preceding pipe portion from the inner peripheral side. It has a non-inner circumference regulation structure without a body, and the stretched end portion is not regulated from the inner circumference side by the inner circumference regulation body.

前記製管装置が、前記推進の前後方向と直交する装置幅方向に沿う軸線を中心とする前記軌道ガイドの回転角度を調節する角度調節手段を、更に備えていることが好ましい。
軌道ガイドの角度調節によって、螺旋管を縮径させたり拡径させたりできる。軌道ガイドの先端を螺旋管の内周側へ回転変位させると、螺旋管を縮径できる。軌道ガイド部の先端を螺旋管の外周側へ回転変位させると、螺旋管を拡径できる。
It is preferable that the pipe making device further includes an angle adjusting means for adjusting the rotation angle of the track guide about an axis along the width direction of the device orthogonal to the front-rear direction of the propulsion.
By adjusting the angle of the trajectory guide, the diameter of the spiral tube can be reduced or increased. The diameter of the spiral tube can be reduced by rotationally displacing the tip of the trajectory guide toward the inner peripheral side of the spiral tube. The diameter of the spiral tube can be expanded by rotationally displacing the tip of the track guide portion toward the outer peripheral side of the spiral tube.

前記軌道ガイドが、
前記駆動部フレームから前記押し出し方向へ突出されるようにして、前記駆動部フレームに固定された固定ガイド部と、
前記固定ガイド部の先端部に、前記軸線を中心にして回転可能に連なり、かつ前記角度調節手段に接続された可変ガイド部と、
を含むことが好ましい。
可変ガイド部の角度調節によって、螺旋管を縮径させたり拡径させたりできる。可変ガイド部の先端を螺旋管の内周側へ回転変位させると、螺旋管を縮径できる。可変ガイド部の先端を螺旋管の外周側へ回転変位させると、螺旋管を拡径できる。
The orbital guide
A fixed guide portion fixed to the drive unit frame so as to project from the drive unit frame in the extrusion direction,
A variable guide portion rotatably connected to the tip end portion of the fixed guide portion and connected to the angle adjusting means, and a variable guide portion connected to the angle adjusting means.
Is preferably included.
By adjusting the angle of the variable guide portion, the diameter of the spiral tube can be reduced or increased. The diameter of the spiral tube can be reduced by rotationally displacing the tip of the variable guide portion toward the inner peripheral side of the spiral tube. The diameter of the spiral tube can be expanded by rotationally displacing the tip of the variable guide portion toward the outer peripheral side of the spiral tube.

螺旋管の断面形状は、円形に限られず、四角形等の非円形であってもよい。
本明細書における「縮径」は、螺旋管が円形断面であるとき、直径が小さくなることに限られず、螺旋管が任意の断面であるときの、周長が小さくなること(縮周長)をも含む。
また、「拡径」は、螺旋管が円形断面であるとき、直径が大きくなることに限られず、螺旋管が任意の断面であるときの、周長が大きくなること(拡周長)をも含む。
The cross-sectional shape of the spiral tube is not limited to a circular shape, and may be a non-circular shape such as a quadrangle.
The "reduced diameter" in the present specification is not limited to the reduction in diameter when the spiral tube has a circular cross section, and the peripheral length becomes small when the spiral tube has an arbitrary cross section (reduction length). Also includes.
In addition, "diameter expansion" is not limited to increasing the diameter when the spiral tube has a circular cross section, but also increases the peripheral length when the spiral tube has an arbitrary cross section (expansion length). include.

本発明の製管装置によれば、駆動部から押し出された後続帯部分が座屈したり、管端ガイドが損傷したりするのを防止できる。 According to the pipe making device of the present invention, it is possible to prevent the trailing band portion extruded from the drive unit from buckling and the pipe end guide from being damaged.

図1は、本発明の第1実施形態に係る製管装置を、更生管(螺旋管)の製管中の状態で模式的に示す側面図である。FIG. 1 is a side view schematically showing a pipe making device according to the first embodiment of the present invention in a state where a rehabilitated pipe (spiral pipe) is being made. 図2は、図1のII−II線に沿う、製管中の前記製管装置及び更生管の解説平面図である。FIG. 2 is an explanatory plan view of the pipe making device and the rehabilitation pipe during pipe making along the line II-II of FIG. 図3は、前記製管装置によって製管中の更生管(螺旋管)の斜視図である。FIG. 3 is a perspective view of a rehabilitated pipe (spiral pipe) being made by the pipe making device. 図4は、前記製管装置によって既設管を更生する様子を示す断面図である。FIG. 4 is a cross-sectional view showing how the existing pipe is rehabilitated by the pipe making device. 図5は、前記更生管となるべき帯状部材を示し、図1のV−V線に沿う断面図である。FIG. 5 shows a strip-shaped member to be the rehabilitation pipe, and is a cross-sectional view taken along the line VV of FIG. 図6は、図1のVI−VI線に沿う断面図である。FIG. 6 is a cross-sectional view taken along the line VI-VI of FIG. 図7は、図1のVII−VII線に沿う断面図である。FIG. 7 is a cross-sectional view taken along the line VII-VII of FIG. 図8は、図1のVIII−VIII線に沿う断面図である。FIG. 8 is a cross-sectional view taken along the line VIII-VIII of FIG. 図9は、本発明の第2実施形態に係る製管装置を、更生管(螺旋管)の製管中の状態で模式的に示す側面図である。FIG. 9 is a side view schematically showing a pipe making device according to a second embodiment of the present invention in a state where a rehabilitated pipe (spiral pipe) is being made. 図10は、前記第2実施形態における縮径製管時の状態を示す側面図である。FIG. 10 is a side view showing a state at the time of diameter reduction pipe making in the second embodiment. 図11は、前記第2実施形態における拡径製管時の状態を示す側面図である。FIG. 11 is a side view showing a state at the time of diameter-expanded pipe making in the second embodiment.

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4は、老朽化した既設管1を更生する様子を示したものである。既設管1としては、下水道管、上水道管、農業用水管、水力発電用導水管、ガス管等が挙げられる。既設管1の内壁に更生管9がライニングされる。更生管9は、長尺の帯状部材90によって構成され、螺旋管状になっている。以下、更生管9を適宜「螺旋管9」と称す。
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
<First Embodiment>
FIG. 4 shows a state in which the old existing pipe 1 is rehabilitated. Examples of the existing pipe 1 include sewer pipes, water pipes, agricultural water pipes, hydroelectric power transmission pipes, gas pipes and the like. The rehabilitation pipe 9 is lined on the inner wall of the existing pipe 1. The rehabilitation tube 9 is composed of a long strip-shaped member 90 and has a spiral tubular shape. Hereinafter, the rehabilitation tube 9 is appropriately referred to as a “spiral tube 9”.

図5に示すように、帯状部材90は、一定の断面を有して、同図の紙面と略直交する方向へ延びている。帯状部材90の帯本体90aの材質は、例えばポリ塩化ビニル等の合成樹脂である。帯本体90aの裏側には金属製の補強帯材96が設けられている。なお、補強帯材96が省略されていてもよい。平板状の補強帯材が樹脂製の帯本体90aに埋め込まれていてもよい。
帯状部材90の裏側部(外周側部、図5において下側部)には、溝95bが形成されている。溝95bは、帯状部材90の長手方向に沿って延びている。
As shown in FIG. 5, the strip-shaped member 90 has a certain cross section and extends in a direction substantially orthogonal to the paper surface of the figure. The material of the band body 90a of the band member 90 is a synthetic resin such as polyvinyl chloride. A metal reinforcing band material 96 is provided on the back side of the band body 90a. The reinforcing strip 96 may be omitted. A flat plate-shaped reinforcing band material may be embedded in the resin band body 90a.
A groove 95b is formed on the back side portion (outer peripheral side portion, lower portion in FIG. 5) of the strip-shaped member 90. The groove 95b extends along the longitudinal direction of the strip member 90.

図5に示すように、帯状部材90の幅方向の一方側(図5において左側)の縁部には、凹状の第1嵌合部93が形成されている。帯状部材90の幅方向の他方側(図5において右側)の縁部には、凸状の第2嵌合部94が形成されている。第1嵌合部93の凹部と第2嵌合部94の凸部は互いに相補形状になっている。
図7及び図8に示すように、螺旋管9における、一周違いに隣接する縁の嵌合部93,94どうしが互いに凹凸嵌合によって接合されている。
As shown in FIG. 5, a concave first fitting portion 93 is formed on one side (left side in FIG. 5) of the strip-shaped member 90 in the width direction. A convex second fitting portion 94 is formed on the other side (right side in FIG. 5) of the strip-shaped member 90 in the width direction. The concave portion of the first fitting portion 93 and the convex portion of the second fitting portion 94 have complementary shapes to each other.
As shown in FIGS. 7 and 8, in the spiral tube 9, the fitting portions 93 and 94 of the edges adjacent to each other are joined to each other by uneven fitting.

図3及び図4に示すように、製管途中の帯状部材90は、既に製管された先行管部91と、これに続く未製管の後続帯部92とを含む。帯状部材90が、螺旋状の巻回方向に巻回されることで、螺旋管状の先行管部91が形成されている。製管が進むにつれて、先行管部91が、該先行管部91の管軸に沿って漸次延伸される。先行管部91の管軸に沿う延伸方向EDの前端(図4において左端)の約一周部分を「延伸端部91e」と称す。 As shown in FIGS. 3 and 4, the strip-shaped member 90 in the middle of pipe-making includes a leading pipe portion 91 that has already been pipe-made, and a trailing strip portion 92 that is not made of pipe. The strip-shaped member 90 is wound in the spiral winding direction to form a spiral tubular leading tube portion 91. As the pipe making progresses, the leading pipe portion 91 is gradually stretched along the pipe axis of the leading pipe portion 91. Approximately one circumference of the front end (left end in FIG. 4) of the extension direction ED along the pipe axis of the leading pipe portion 91 is referred to as a “stretch end portion 91e”.

図3及び図4に示すように、後続帯部92は、地上の巻回ドラム5から人孔4を経て、先行管部91の内部を通され、延伸端部91eと連続している。
図7に示すように、該連続する直近の後続帯部92及び先行管部91における帯状部材90の幅方向は、延伸方向EDにほぼ沿わされ、かつ第1嵌合部93が延伸前方(同図において左方)へ向けられ、第2嵌合部94が延伸後方(同図において右方)へ向けられている。
As shown in FIGS. 3 and 4, the trailing band portion 92 is passed through the inside of the leading pipe portion 91 from the winding drum 5 on the ground through the manhole 4, and is continuous with the extended end portion 91e.
As shown in FIG. 7, the width direction of the band-shaped member 90 in the continuous latest succeeding band portion 92 and the leading pipe portion 91 is substantially along the stretching direction ED, and the first fitting portion 93 is stretched forward (same as above). The second fitting portion 94 is directed to the rear side of stretching (to the right in the figure).

図3に示すように、先行管部91の延伸端部91e(図4において左端部)上に製管装置3が配置されている。製管装置3は、後続帯部92の縁(第2嵌合部94)と、先行管部91の一周先行する対向縁(第1嵌合部93)とを嵌合させることで、螺旋管9を製管しながら、螺旋状の巻回方向に沿って、図3において時計回りに推進される。前記嵌合は、先行管部91の延伸端部91eの周方向の一部分(嵌合位置9q)においてなされる。 As shown in FIG. 3, the pipe making device 3 is arranged on the extended end portion 91e (left end portion in FIG. 4) of the leading pipe portion 91. The pipe making device 3 fits the edge of the trailing band portion 92 (second fitting portion 94) and the facing edge (first fitting portion 93) that precedes the leading pipe portion 91 one round, thereby forming a spiral pipe. While forming the tube 9, it is propelled clockwise in FIG. 3 along the spiral winding direction. The fitting is performed at a part of the extending end portion 91e of the leading pipe portion 91 in the circumferential direction (fitting position 9q).

図4に示すように、製管装置3の推進前後方向LDは、前記巻回方向に沿っている。製管装置3の幅方向WDは、前記巻回方向と直交され、螺旋管9の管軸にほぼ沿っている。図1に示すように、製管装置3の高さ方向HDは、装置幅方向WD及び推進前後方向LDと直交し、螺旋管9の管内外方向(径方向)へ向けられている。
製管装置3は、非内周規制構造になっている。つまり、先行管部91の延伸端部91eの断面(形状、周長、直径)を内周側から規制する内周規制体を有していない。延伸端部91eが内周側へ解放された状態で、製管が行われる。
As shown in FIG. 4, the propulsion front-rear direction LD of the pipe making device 3 is along the winding direction. The width direction WD of the pipe making device 3 is orthogonal to the winding direction and is substantially along the pipe axis of the spiral pipe 9. As shown in FIG. 1, the height direction HD of the pipe making device 3 is orthogonal to the device width direction WD and the propulsion front-rear direction LD, and is directed in the inside / outside direction (diameter direction) of the spiral tube 9.
The pipe making device 3 has a non-inner circumference regulation structure. That is, it does not have an inner peripheral restricting body that regulates the cross section (shape, peripheral length, diameter) of the extended end portion 91e of the leading pipe portion 91 from the inner peripheral side. Pipe making is performed with the stretched end 91e open to the inner peripheral side.

詳しくは、図1及び図2に示すように、製管装置3は、駆動ユニット10(駆動部)と、管端ガイドユニット20を含む。
駆動ユニット10は、先行管部91の延伸端部91eの内周側に離れて位置され、後続帯部92に対して延伸端部91eへ向けて押し出し力を付与する。駆動ユニット10は、駆動部フレーム15と、二対の駆動ローラ11,12を含む。駆動部フレーム15に駆動ローラ11,12が保持されている。前段駆動ローラ11,11と後段駆動ローラ12,12とが、推進前後方向LD及び装置高さ方向HDにずれて配置されている。各駆動ローラ11,12の軸線は、装置幅方向WD(図1の紙面直交方向)へ向けられている。各駆動ローラ11,12には、駆動モータ(図示省略)がトルク伝達可能に接続されている。
なお、駆動ローラは、2対に限られず、少なくとも一対あればよく、3対以上でもよい。
Specifically, as shown in FIGS. 1 and 2, the pipe making device 3 includes a drive unit 10 (drive unit) and a pipe end guide unit 20.
The drive unit 10 is located away from the inner peripheral side of the extended end portion 91e of the leading pipe portion 91, and applies a pushing force to the trailing band portion 92 toward the extended end portion 91e. The drive unit 10 includes a drive frame 15 and two pairs of drive rollers 11 and 12. Drive rollers 11 and 12 are held in the drive unit frame 15. The front-stage drive rollers 11 and 11 and the rear-stage drive rollers 12 and 12 are arranged so as to be offset in the propulsion front-rear direction LD and the device height direction HD. The axes of the drive rollers 11 and 12 are directed in the device width direction WD (direction orthogonal to the paper surface in FIG. 1). A drive motor (not shown) is connected to each of the drive rollers 11 and 12 so as to be able to transmit torque.
The drive rollers are not limited to two pairs, and may be at least one pair, and may be three or more pairs.

対をなす前段駆動ローラ11,11間及び後段駆動ローラ12,12間に後続帯部92が通されている。駆動ローラ11,12の回転駆動によって、後続帯部92が、推進後方かつ装置高さ方向HDの基部側へ斜めに押し出される。 A trailing band portion 92 is passed between the pair of front drive rollers 11 and 11 and between the rear drive rollers 12 and 12. By the rotational drive of the drive rollers 11 and 12, the trailing band portion 92 is obliquely pushed out behind the propulsion and toward the base side of the device height direction HD.

図1に示すように、駆動ユニット10に管端ガイドユニット20が接続されている。管端ガイドユニット20は、ガイドフレーム25と、管端ガイド21,22,23を含む。図において簡略化して示すガイドフレーム25が、駆動部フレーム15から装置高さ方向HDの基部側及び推進後方へ延びている。
ガイドフレーム25に管端ガイド21,22,23が保持されている。管端ガイド21,22,23が、先行管部91の延伸端部91eに係止されている。
As shown in FIG. 1, the pipe end guide unit 20 is connected to the drive unit 10. The pipe end guide unit 20 includes a guide frame 25 and pipe end guides 21, 22, and 23. The guide frame 25, which is simplified in the figure, extends from the drive unit frame 15 to the base side of the device height direction HD and to the rear of the propulsion.
The pipe end guides 21, 22, and 23 are held by the guide frame 25. The pipe end guides 21, 22, and 23 are locked to the extended end portion 91e of the leading pipe portion 91.

図1〜図3に示すように、ガイドフレーム25の前側部に管端ガイド21が配置されている。管端ガイド21は、駆動部10に対して延伸後方(図2において上)へ1ピッチずれて配置されている。管端ガイド21は、プレート状の外周ガイド21aと、押え部材21d(内周ガイド)を含む。外周ガイド21aは、先行管部91における延伸端部91eに外周側から係止されている。詳細な図示は省略するが、外周ガイド21aには、帯状部材90の溝95bに係止される係止部が形成されている。外周ガイド21aは、先行管部91の周方向にスライド(移動)可能になっている。
外周ガイド21aの前後両側部には、コロ21cが設けられている。コロ21cが既設管1の内周に接して転動される。
As shown in FIGS. 1 to 3, the pipe end guide 21 is arranged on the front side of the guide frame 25. The pipe end guide 21 is arranged so as to be offset by one pitch from the drive unit 10 to the rear of the extension (upper in FIG. 2). The pipe end guide 21 includes a plate-shaped outer peripheral guide 21a and a pressing member 21d (inner peripheral guide). The outer peripheral guide 21a is locked to the extended end portion 91e of the leading pipe portion 91 from the outer peripheral side. Although detailed illustration is omitted, the outer peripheral guide 21a is formed with a locking portion that is locked to the groove 95b of the strip-shaped member 90. The outer peripheral guide 21a can slide (move) in the circumferential direction of the leading pipe portion 91.
Rollers 21c are provided on both front and rear sides of the outer peripheral guide 21a. The roller 21c is rolled in contact with the inner circumference of the existing pipe 1.

押え部材21dは、延伸端部91eを挟んで外周ガイド21aと対向するように配置されている。押え部材21dと外周ガイド21aとの間に延伸端部91eが挟み付けられている。言い換えると、押え部材21dが、延伸端部91eを内周側から押え付けている。
製管装置3の推進に伴って、管端ガイド21と先行管部91との間に摩擦抵抗が発生する。
The pressing member 21d is arranged so as to face the outer peripheral guide 21a with the extended end portion 91e interposed therebetween. The extended end 91e is sandwiched between the pressing member 21d and the outer peripheral guide 21a. In other words, the pressing member 21d presses the extended end portion 91e from the inner peripheral side.
As the pipe making device 3 is propelled, frictional resistance is generated between the pipe end guide 21 and the leading pipe portion 91.

管端ガイド21の推進後方に離れて、管端ガイド23が配置されている。管端ガイド23は、装置幅方向WDにおける駆動ローラ11と同じ位置に配置されている。図8に示すように、プレート状の管端ガイド23が、先行管部91における延伸端部91eからその一周先行部分91bに跨るとともに、先行管部91の外周面に宛がわれている。 The pipe end guide 23 is arranged apart from the propulsion rear of the pipe end guide 21. The pipe end guide 23 is arranged at the same position as the drive roller 11 in the device width direction WD. As shown in FIG. 8, the plate-shaped pipe end guide 23 extends from the extended end portion 91e of the leading pipe portion 91 to the one-circling leading portion 91b thereof, and is addressed to the outer peripheral surface of the leading pipe portion 91.

図8に示すように、管端ガイド23には、係止部23fが設けられている。係止部23fが、先行管部91の溝95bに外周側から係止されている。かつ、係止部23fは、溝95bの長手方向(図8の紙面直交方向)へスライド可能になっている。ひいては、管端ガイド23が、延伸端部91eの周方向にスライド可能になっている。
図1に示すように、管端ガイド23の前後両側部には、コロ23cが設けられている。コロ23cが既設管1の内周に接して転動される。
管端ガイド23上、又は管端ガイド23の推進前方もしくは推進後方に嵌合位置9qが配置されている。
As shown in FIG. 8, the pipe end guide 23 is provided with a locking portion 23f. The locking portion 23f is locked to the groove 95b of the leading pipe portion 91 from the outer peripheral side. Moreover, the locking portion 23f is slidable in the longitudinal direction of the groove 95b (the direction orthogonal to the paper surface in FIG. 8). As a result, the pipe end guide 23 is slidable in the circumferential direction of the extended end portion 91e.
As shown in FIG. 1, rollers 23c are provided on both front and rear sides of the pipe end guide 23. The roller 23c is rolled in contact with the inner circumference of the existing pipe 1.
The fitting position 9q is arranged on the pipe end guide 23 or in front of or behind the propulsion of the pipe end guide 23.

図1に示すように、外周側の管端ガイド23の推進後方(図1において右)には、内周側の管端ガイドとして、内周ガイドローラ22が配置されている。図8に示すように、内周ガイドローラ22の軸線は、装置幅方向WDへ向けられている。内周ガイドローラ22は、先行管部91における延伸端部91eからその一周先行部分91bへ少し跨るとともに、先行管部91の内周面に押し当てられている。 As shown in FIG. 1, an inner peripheral guide roller 22 is arranged as a pipe end guide on the inner peripheral side behind the propulsion rear side (right in FIG. 1) of the pipe end guide 23 on the outer peripheral side. As shown in FIG. 8, the axis of the inner peripheral guide roller 22 is directed to the device width direction WD. The inner peripheral guide roller 22 slightly straddles the extended end portion 91e of the leading pipe portion 91 to the one-round leading portion 91b thereof, and is pressed against the inner peripheral surface of the leading pipe portion 91.

更に、図1〜図3に示すように、製管装置3は、軌道ガイド30を備えている。軌道ガイド30は、1又は複数(図では2つ)の軌道ガイド部材31を含む。各軌道ガイド部材31は、長い板状になっている。軌道ガイド部材31における、製管装置3の上面を向く縁(図1において上側の縁)は、円弧状に緩やかに湾曲されている。複数の軌道ガイド部材31が、製管装置3の幅方向(図2において上下)に間隔を置いて、互いに平行に並べられている。
各軌道ガイド部材31は、駆動部フレーム15に連結されて支持されている。軌道ガイド30と管端ガイドユニット20とは、直接には連結されていない。
各軌道ガイド部材31は、駆動部フレーム15の後端部(図1において右側部)から嵌合位置9qへ向けて、後続帯部分92の前記押し出し方向に沿って延びている。軌道ガイド部材31は、先端に向かうにしたがって先行管部91の延伸端部91eに漸近している。
Further, as shown in FIGS. 1 to 3, the pipe making device 3 includes a track guide 30. The track guide 30 includes one or more (two in the figure) track guide members 31. Each track guide member 31 has a long plate shape. The edge of the track guide member 31 facing the upper surface of the pipe making device 3 (the upper edge in FIG. 1) is gently curved in an arc shape. A plurality of track guide members 31 are arranged in parallel with each other at intervals in the width direction (upper and lower in FIG. 2) of the pipe making device 3.
Each track guide member 31 is connected to and supported by a drive unit frame 15. The track guide 30 and the pipe end guide unit 20 are not directly connected.
Each track guide member 31 extends from the rear end portion (right portion in FIG. 1) of the drive unit frame 15 toward the fitting position 9q along the pushing direction of the trailing band portion 92. The track guide member 31 is asymptotically approaching the extended end portion 91e of the leading pipe portion 91 toward the tip end.

図6に示すように、軌道ガイド部材31は、後続帯部92における駆動ユニット10から嵌合位置9qまでの間の後続帯部分92cの溝95bにスライド可能に嵌め込まれている。軌道ガイド部材31によって、後続帯部分92cが外周面側から支持及び案内されている。 As shown in FIG. 6, the track guide member 31 is slidably fitted in the groove 95b of the trailing band portion 92c between the drive unit 10 and the fitting position 9q in the trailing band portion 92. The trailing band portion 92c is supported and guided from the outer peripheral surface side by the track guide member 31.

製管装置3によって、次のようにして更生管9(螺旋管)が製管され、既設管1が更生される。
図4に示すように、既設管1内に先行管部91がある程度形成されているものとする。
帯状部材90の後続帯部92は、人孔4から先行管部91の内部を経て、製管装置3の駆動ユニット10へ導入されている。
図1に示すように、駆動ローラ11,12の駆動によって、後続帯部92を、駆動ユニット10から嵌合位置9qへ向けて斜めに押し出す。
これによって、図1及び図6に示すように、後続帯部分92cが、軌道ガイド部材31に沿って案内されながら嵌合位置9qへ向かう。そして、図7に示すように、嵌合位置9qにおいて、後続帯部分92cの第2嵌合部94と、先行管部91の一周先行する部分の第1嵌合部93とが嵌合される(嵌合工程)。このとき、前側管端ガイド21の外周ガイド21aと後側管端ガイド23とが、先行管部91を外周側から保持することで、前記嵌合力を受ける。
更に、嵌合によって、推進反力が生じ、製管装置3が螺旋状の巻回方向に沿って図3において時計回りに推進される(推進工程)。これによって、製管装置3を自走させながら、既設管1の内面に沿って更生管9を製管できる。
管端ガイド21,22,23が先行管部91の延伸端部19eの巻回方向にスライド又は転動可能に係合されることによって、製管装置3を前記巻回方向に案内できる。
さらに、内周ガイドローラ22が、嵌合位置9qを通過後の先行管部91を内周側から押さえることで、前記嵌合部93,94どうしを一層確実に嵌合でき、嵌合が不十分になるのを防止できる。
The rehabilitation pipe 9 (spiral pipe) is made by the pipe making device 3 as follows, and the existing pipe 1 is rehabilitated.
As shown in FIG. 4, it is assumed that the leading pipe portion 91 is formed to some extent in the existing pipe 1.
The trailing band portion 92 of the strip-shaped member 90 is introduced into the drive unit 10 of the pipe making device 3 from the manhole 4 through the inside of the leading pipe portion 91.
As shown in FIG. 1, by driving the drive rollers 11 and 12, the trailing band portion 92 is obliquely pushed out from the drive unit 10 toward the fitting position 9q.
As a result, as shown in FIGS. 1 and 6, the trailing band portion 92c moves toward the fitting position 9q while being guided along the track guide member 31. Then, as shown in FIG. 7, at the fitting position 9q, the second fitting portion 94 of the trailing band portion 92c and the first fitting portion 93 of the portion one round ahead of the leading pipe portion 91 are fitted. (Mating process). At this time, the outer peripheral guide 21a of the front pipe end guide 21 and the rear pipe end guide 23 receive the fitting force by holding the leading pipe portion 91 from the outer peripheral side.
Further, the fitting generates a propulsion reaction force, and the pipe making device 3 is propelled clockwise in FIG. 3 along the spiral winding direction (propulsion step). As a result, the rehabilitation pipe 9 can be made along the inner surface of the existing pipe 1 while the pipe making device 3 is self-propelled.
By engaging the pipe end guides 21, 22, and 23 in the winding direction of the extended end portion 19e of the leading pipe portion 91 so as to be slidable or rollable, the pipe making device 3 can be guided in the winding direction.
Further, the inner peripheral guide roller 22 presses the leading pipe portion 91 after passing through the fitting position 9q from the inner peripheral side, so that the fitting portions 93 and 94 can be more reliably fitted to each other, and the fitting is not possible. It can be prevented from becoming sufficient.

製管装置3によれば、帯状部材90の後続帯部分92cが駆動ユニット10から嵌合位置9qへ向かう間、当該後続帯部分92cを軌道ガイド部材31によって案内及び支持することができる。これによって、後続帯部分92cが、本来の軌道から外れて脱線するのを防止できる。帯状部材90の剛性が低くても、後続帯部分92cが座屈して大きく折れ曲がるのを防止できる。帯状部材90の剛性が高くても、後続帯部分92cを、押し出し方向の下流側へ向かうにしたがって先行管部91の接線に漸近させることができる。この結果、帯状部材90が低剛性であるか高剛性であるかに拘わらず、後続帯部分92cと先行管部91とを確実に嵌合させながら更生管9を製管できる。
また、軌道ガイド部材31は管端ガイド21,23とは直接連結されていないから、後続帯部分92cから軌道ガイド部材31に加わる力が、管端ガイド21,23に直接伝達されるのを回避できる。したがって、帯状部材90が高剛性であっても、管端ガイド21,23にかかる負荷を軽減でき、管端ガイド21,23の変形や破損を防止できる。
内周規制体がない場合、先行管部91へ後続帯部92との嵌合の速度が不安定となりやすく、結果、後続帯部92の供給速度が過剰となるおそれがある。しかし、軌道ガイド部材31によって、後続帯部92が座屈することはなくなる。
According to the pipe making device 3, the trailing band portion 92c of the strip-shaped member 90 can be guided and supported by the track guide member 31 while the trailing band portion 92c moves from the drive unit 10 to the fitting position 9q. As a result, it is possible to prevent the trailing band portion 92c from derailing from the original trajectory. Even if the rigidity of the strip-shaped member 90 is low, it is possible to prevent the trailing strip portion 92c from buckling and bending significantly. Even if the strip-shaped member 90 has high rigidity, the trailing strip portion 92c can be asymptotic to the tangent line of the leading pipe portion 91 toward the downstream side in the extrusion direction. As a result, regardless of whether the strip-shaped member 90 has low rigidity or high rigidity, the rehabilitation pipe 9 can be manufactured while securely fitting the trailing strip portion 92c and the leading pipe portion 91.
Further, since the track guide member 31 is not directly connected to the pipe end guides 21 and 23, it is possible to avoid that the force applied to the track guide member 31 from the trailing band portion 92c is directly transmitted to the pipe end guides 21 and 23. can. Therefore, even if the strip-shaped member 90 has high rigidity, the load applied to the pipe end guides 21 and 23 can be reduced, and the pipe end guides 21 and 23 can be prevented from being deformed or damaged.
If there is no inner peripheral restrictor, the speed of fitting the leading pipe portion 91 with the succeeding belt portion 92 tends to be unstable, and as a result, the supply speed of the succeeding belt portion 92 may become excessive. However, the track guide member 31 prevents the trailing band portion 92 from buckling.

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9〜図11は、本発明の第2実施形態を示したものである。図9に示すように、第2実施形態の製管装置3Bにおいては、軌道ガイド30Bの各軌道ガイド部材31Bが、固定ガイド部32と、可変ガイド部33を含んでいる。固定ガイド部32は、駆動ユニット10の駆動部フレーム15に固定されるとともに、製管装置3Bの推進後方(図9において右方向)へ突出されている。
Next, other embodiments of the present invention will be described. In the following embodiments, the same reference numerals are given to the drawings for configurations that overlap with the above-described embodiments, and the description thereof will be omitted.
<Second Embodiment>
9 to 11 show a second embodiment of the present invention. As shown in FIG. 9, in the pipe making device 3B of the second embodiment, each track guide member 31B of the track guide 30B includes a fixed guide portion 32 and a variable guide portion 33. The fixed guide portion 32 is fixed to the drive portion frame 15 of the drive unit 10 and protrudes rearward of the propulsion of the pipe making device 3B (to the right in FIG. 9).

固定ガイド部32の先端部から可変ガイド部33が嵌合位置9qへ向けて延びている。固定ガイド部32と可変ガイド部33とが、回転連結部35を介して連結されている。回転連結部35の軸線は装置幅方向WD(図9の紙面と直交する方向)へ向けられている。可変ガイド部33が、固定ガイド部32に対して、回転連結部35を中心にして俯仰可能(回転可能)になっている。 The variable guide portion 33 extends from the tip end portion of the fixed guide portion 32 toward the fitting position 9q. The fixed guide portion 32 and the variable guide portion 33 are connected via the rotary connecting portion 35. The axis of the rotary connecting portion 35 is directed in the device width direction WD (direction orthogonal to the paper surface of FIG. 9). The variable guide portion 33 can be raised and lowered (rotatably) with respect to the fixed guide portion 32 with the rotary connecting portion 35 as the center.

更に、軌道ガイド30Bには角度調節ボルト34(角度調節手段)が設けられている。角度調節ボルト34によって、可変ガイド部33が角度調節可能である。好ましくは、1つの角度調節ボルト34によって、複数(図3参照)の軌道ガイド部材31B,31Bの可変ガイド部33,33が一体的に角度調節される。可変ガイド部33の角度調節可能範囲は、後続帯部分92cが先行管部91の接線に滑らかに沿うように案内可能な角度から、後続帯部分92cが先行管部91に対して数十度の角度をもって交差するように案内可能な角度までの範囲であることが好ましい。 Further, the track guide 30B is provided with an angle adjusting bolt 34 (angle adjusting means). The angle of the variable guide portion 33 can be adjusted by the angle adjusting bolt 34. Preferably, one angle adjusting bolt 34 integrally adjusts the angles of the variable guide portions 33, 33 of the plurality of track guide members 31B, 31B (see FIG. 3). The angle adjustable range of the variable guide portion 33 is such that the trailing band portion 92c can be guided smoothly along the tangent line of the leading pipe portion 91, and the trailing band portion 92c is several tens of degrees with respect to the leading pipe portion 91. It is preferable that the range is up to an angle that can be guided so as to intersect at an angle.

例えば、図10の実線に示すように、角度調節ボルト34のねじ込み量を大きくすると、可変ガイド部33の先端が、先行管部91の内周側へ回転変位される。これによって、後続帯部分92cの先行管部91への案内角度αが小さくなる。したがって、後続帯部分92cが先行管部91を外周側へ押す力が小さくなる。一方、この種の帯状部材90は、螺旋製管されるにしたがって縮径される性質を有している。この結果、更生管9を縮径できる。 For example, as shown by the solid line in FIG. 10, when the screwing amount of the angle adjusting bolt 34 is increased, the tip of the variable guide portion 33 is rotationally displaced toward the inner peripheral side of the leading pipe portion 91. As a result, the guide angle α 1 of the trailing band portion 92c to the leading pipe portion 91 becomes smaller. Therefore, the force with which the trailing band portion 92c pushes the leading pipe portion 91 toward the outer periphery is reduced. On the other hand, this type of strip-shaped member 90 has a property of being reduced in diameter as the spiral pipe is manufactured. As a result, the diameter of the rehabilitation pipe 9 can be reduced.

図11の実線に示すように、角度調節ボルト34のねじ込み量を小さくすると、可変ガイド部33の先端が、先行管部91の外周側へ回転変位される。これによって、後続帯部分92cの案内角度αが大きくなる。したがって、後続帯部分92cが先行管部91を外周側へ押す力が大きくなる。このため、先行管部91の縮径傾向が抑えられ、更生管9を拡径できる。
なお、図10及び図11の二点鎖線は、可変ガイド部33が中間位置の状態(図9)を示す。
As shown by the solid line in FIG. 11, when the screwing amount of the angle adjusting bolt 34 is reduced, the tip of the variable guide portion 33 is rotationally displaced toward the outer peripheral side of the leading pipe portion 91. As a result, the guide angle α 2 of the trailing band portion 92c becomes large. Therefore, the force that the trailing band portion 92c pushes the leading pipe portion 91 toward the outer periphery increases. Therefore, the tendency of the leading pipe portion 91 to shrink in diameter is suppressed, and the diameter of the rehabilitation pipe 9 can be expanded.
The alternate long and short dash line in FIGS. 10 and 11 indicates a state in which the variable guide portion 33 is in the intermediate position (FIG. 9).

本発明は、上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、第2実施形態(図9〜図11)において、角度調節ボルト34と回転連結部35の位置を逆にしてもよい。角度調節ボルト34のねじ込み量を大きくすると、可変ガイド部33の先端が先行管部91の外周側へ回転変位され、角度調節ボルト34のねじ込み量を小さくすると、可変ガイド部33の先端が先行管部91の内周側へ回転変位されるようにしてもよい。
軌道ガイド部材31の全体が、角度調節手段によって俯仰可能(回転可能)になっていてもよい。
角度調節手段は、ボルトに限られず、パワーシリンダ等のアクチュエータによって構成されていてもよい。
The present invention is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention.
For example, in the second embodiment (FIGS. 9 to 11), the positions of the angle adjusting bolt 34 and the rotary connecting portion 35 may be reversed. When the screwing amount of the angle adjusting bolt 34 is increased, the tip of the variable guide portion 33 is rotationally displaced toward the outer peripheral side of the leading pipe portion 91, and when the screwing amount of the angle adjusting bolt 34 is reduced, the tip of the variable guide portion 33 is rotated and displaced to the leading pipe portion 91. It may be rotationally displaced toward the inner peripheral side of the portion 91.
The entire track guide member 31 may be raised or lowered (rotatable) by the angle adjusting means.
The angle adjusting means is not limited to bolts, and may be configured by an actuator such as a power cylinder.

本発明は、例えば下水道管、上水道管、農業用水管等の更生技術に適用できる。 The present invention can be applied to rehabilitation techniques such as sewer pipes, water pipes, and agricultural water pipes.

LD 推進前後方向
WD 装置幅方向
3 製管装置
9 更生管(螺旋管)
9q 嵌合位置
90 帯状部材
91 先行管部
91e 延伸端部
92 後続帯部
92c 後続帯部分
93 第1嵌合部(対向縁)
94 第2嵌合部(縁)
10 駆動ユニット(駆動部)
11,12 駆動ローラ
20 管端ガイドユニット
21 管端ガイド
21a 外周ガイド
21d 押え部材(内周ガイド)
23 外周側の管端ガイド
22 内周ガイドローラ(内周側の管端ガイド)
25 ガイドフレーム
30 軌道ガイド
31 軌道ガイド部材
32 固定ガイド部
33 可変ガイド部
34 角度調節ボルト(角度調節手段)
35 回転連結部
LD propulsion front-back direction WD device width direction 3 pipe making device 9 rehabilitation tube (spiral tube)
9q Fitting position 90 Band-shaped member 91 Leading pipe
91e Stretched end 92 Subsequent band 92c Subsequent band 93 First fitting (opposing edge)
94 Second fitting part (edge)
10 Drive unit (drive unit)
11,12 Drive roller 20 Pipe end guide unit 21 Pipe end guide 21a Outer circumference guide 21d Presser member (inner circumference guide)
23 Pipe end guide on the outer circumference side 22 Inner circumference guide roller (tube end guide on the inner circumference side)
25 Guide frame 30 Track guide 31 Track guide member 32 Fixed guide section 33 Variable guide section 34 Angle adjustment bolt (angle adjustment means)
35 rotary connection

Claims (3)

螺旋管となるべき帯状部材における先行して螺旋状に製管された先行管部の延伸端部を内周側へ解放させた状態で、前記先行管部に続く未製管の後続帯部を、前記先行管部の延伸端部の内周側から斜めに押し出し、該押し出し力によって前記後続帯部の縁を前記延伸端部の一周先行する対応縁と嵌合させるとともに螺旋状の巻回方向に沿って推進される、螺旋管の製管装置であって、前記帯状部材の外周側部には前記帯状部材の延び方向へ延びる溝が形成されており、
前記後続帯部を挟む少なくとも一対の駆動ローラと、前記駆動ローラを保持する駆動部フレームとを有して、前記後続帯部に前記螺旋管の管内外方向の外周側かつ推進後方へ向けて前記押し出し力を付与する駆動部と、
前記駆動部フレームに連結されたガイドフレームと、
前記ガイドフレームに設けられ、前記先行管部の延伸端部に係止される管端ガイドと、
前記駆動部フレームから前記押し出し方向に沿って延び、前記後続帯部における前記押し出されてから前記嵌合されるまでの間の後続帯部分をガイドする軌道ガイドと、
を備え、前記軌道ガイドが、前記押し出し方向に沿う長手方向に対して直交する幅方向を前記管内外方向へ向け、かつ前記長手方向及び前記幅方向と直交する厚みが前記溝の幅より小さい板状であり、前記軌道ガイドが、前記後続帯部分の前記溝にスライド可能に嵌め込まれることを特徴とする螺旋管の製管装置。
In a state where the extended end portion of the preceding pipe portion formed in a spiral shape in advance in the strip-shaped member to be a spiral pipe is released to the inner peripheral side, the trailing band portion of the unmade pipe following the preceding pipe portion is formed. , The leading pipe portion is extruded diagonally from the inner peripheral side of the extended end portion, and the edge of the trailing band portion is fitted with the corresponding edge that precedes the extended end portion by the pushing force, and the spiral winding direction. It is a pipe making device of a spiral tube propelled along the above, and a groove extending in the extending direction of the strip-shaped member is formed on the outer peripheral side portion of the strip-shaped member.
It has at least a pair of drive rollers that sandwich the trailing band portion and a drive unit frame that holds the drive rollers, and the trailing band portion is directed toward the outer peripheral side of the spiral tube in the inner and outer directions and toward the rear of the propulsion. A drive unit that applies pushing force and
A guide frame connected to the drive unit frame and
A pipe end guide provided on the guide frame and locked to the extension end of the leading pipe portion,
A track guide that extends from the drive unit frame along the extrusion direction and guides the trailing band portion in the trailing band portion from the extrusion to the fitting.
A plate whose width direction orthogonal to the longitudinal direction along the extrusion direction is directed toward the inside and outside of the pipe, and the thickness orthogonal to the longitudinal direction and the width direction is smaller than the width of the groove. A spiral tube manufacturing device characterized in that the track guide is slidably fitted into the groove of the trailing band portion.
前記推進の前後方向と直交する装置幅方向に沿う軸線を中心とする前記軌道ガイドの回転角度を調節する角度調節手段を、更に備えたことを特徴とする請求項1に記載の製管装置。 The pipe making device according to claim 1, further comprising an angle adjusting means for adjusting the rotation angle of the track guide about an axis along the width direction of the device orthogonal to the front-rear direction of the propulsion. 前記軌道ガイドが、
前記駆動部フレームから前記押し出し方向へ突出されるようにして、前記駆動部フレームに固定された固定ガイド部と、
前記固定ガイド部の先端部に、前記軸線を中心にして回転可能に連なり、かつ前記角度調節手段に接続された可変ガイド部と、
を含むことを特徴とする請求項2に記載の製管装置。
The orbital guide
A fixed guide portion fixed to the drive unit frame so as to project from the drive unit frame in the extrusion direction,
A variable guide portion rotatably connected to the tip end portion of the fixed guide portion and connected to the angle adjusting means, and a variable guide portion connected to the angle adjusting means.
The pipe making apparatus according to claim 2, wherein the tube making apparatus includes.
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