JPH10305484A - Method for forming tubular body - Google Patents
Method for forming tubular bodyInfo
- Publication number
- JPH10305484A JPH10305484A JP17045697A JP17045697A JPH10305484A JP H10305484 A JPH10305484 A JP H10305484A JP 17045697 A JP17045697 A JP 17045697A JP 17045697 A JP17045697 A JP 17045697A JP H10305484 A JPH10305484 A JP H10305484A
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- lining
- belt
- roller
- shaped member
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Landscapes
- Protection Of Pipes Against Damage, Friction, And Corrosion (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明は、上水道管、下水道
管、ガス管等の既設の管渠の内面に管状体を形成(製
管)し、この管状体(ライニング管)により既設管渠を
更生する場合などにおける、管状体の形成方法に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for forming a tubular body on an inner surface of an existing sewer such as a water pipe, a sewer pipe, a gas pipe or the like, and forming the existing sewer with the tubular body (lining pipe). The present invention relates to a method for forming a tubular body in a case of rehabilitation.
【0002】[0002]
【従来の技術】上水道管、下水道管、ガス管等の既設の
管渠が老朽化した場合、老朽化した既設管渠の内面を合
成樹脂等の被覆層でライニングすることにより、管渠を
更生することが行われている。例えば、本出願人は特開
平8−261363号公報に示すような異形断面管渠に
おけるライニング施工方法とその施工装置を提案してい
る。2. Description of the Related Art When existing sewers such as water pipes, sewer pipes and gas pipes are deteriorated, the sewers are rehabilitated by lining the inner surface of the deteriorated existing sewers with a coating layer of synthetic resin or the like. That is being done. For example, the present applicant has proposed a lining construction method and a construction apparatus for a pipe with a modified cross section as disclosed in JP-A-8-261363.
【0003】上記特開平8−261363号公報記載の
ライニング施工方法は、異形断面の管渠内に両側縁部に
接合部が形成された長尺の帯状部材を連続的に供給し、
屈撓自在なフレームに配置された案内ローラをガイドと
して内面に当接させつつ螺旋状に巻回し、次いで内面ロ
ーラと外面ローラの挟着作用により接合部を係合させ
て、異形断面の管渠内に連続的にライニング管を形成す
るものである。According to the lining construction method described in the above-mentioned Japanese Patent Application Laid-Open No. 8-261363, a long strip-shaped member having joints formed on both side edges is continuously supplied into a pipe of irregular cross section.
A guide roller disposed on a bendable frame is spirally wound while being in contact with the inner surface as a guide, and then the joining portion is engaged by the clamping action of the inner roller and the outer roller to form a pipe having a modified cross section. A lining tube is continuously formed in the inside.
【0004】上記ライニング施工方法において使用する
帯状部材、即ちライニング層の材料は特に限定されるも
のではなく、各種合成樹脂あるいは金属材料が使用可能
であるが、耐蝕性、成形のしやすさ、強度、コストなど
の面から、硬質塩化ビニル樹脂が特に適しており、広く
使用されている。[0004] The material of the belt-like member used in the above lining construction method, ie, the material of the lining layer is not particularly limited, and various synthetic resins or metal materials can be used. In view of cost, cost, etc., hard vinyl chloride resin is particularly suitable and widely used.
【0005】しかるに、硬質塩化ビニル樹脂は、引張強
さ、伸び、硬度、耐衝撃性等の温度依存性が強く、特に
低温では急激に伸びと耐衝撃性が低下して脆くなるとい
う欠点を有する。従って冬期など低温下で、硬質塩化ビ
ニル樹脂製品に大きい力、モーメントあるいは衝撃を与
えるような加工をしたりするような場合、加工や取り扱
いに著しく困難を伴ったり、材料が破壊してしまうこと
がある。[0005] However, hard vinyl chloride resins have a strong temperature dependency such as tensile strength, elongation, hardness, and impact resistance, and have a drawback that, particularly at low temperatures, the elongation and impact resistance are sharply reduced and become brittle. . Therefore, when processing such as applying a large force, moment or impact to a rigid polyvinyl chloride resin product at low temperatures such as in winter, the processing and handling may be extremely difficult or the material may be damaged. is there.
【0006】一方、上記のライニング施工方法によって
既設の管渠内にライニング施工する場合、下記のような
原因が単一または複数関係することによって、帯状部材
あるいは形成されたライニング管に大きい応力やモーメ
ントが発生することがある。即ち、 ライニング管はフレームに配設された案内ローラをガ
イドとして帯状部材を引っ張りながら巻回して形成する
ので、帯状部材には大きい引張応力が発生するととも
に、螺旋状に巻回することにより、巻径(曲率半径)が
小さい場合には特に、外面側になる部分に曲げにより更
に大きい引張応力が加わる。 接合部の雄部を雌部に押し込んで嵌め合わせる場合、
雌部には大きい引張応力が発生する。 ライニング管にはある程度の水密性が要求されるの
で、接合部における雄部と雌部の接触面圧を高くしなけ
ればならない。そのために隣り合う帯状部材同士が接合
部で相対的に滑動しにくく、接合部に大きい引張応力や
ねじり応力が発生する。 ライニング管形成後に案内ローラが配設されたガイド
をライニング管から抜き出す場合、ガイドの通過によっ
てライニング管は内面からしごかれ、拡径しようとする
フープ応力が作用して、外面側の引張応力が更に大きく
なる。On the other hand, when lining is performed in an existing sewer by the above-described lining method, a large stress or moment is applied to the band-shaped member or the formed lining pipe due to one or more of the following causes. May occur. That is, since the lining tube is formed by winding the belt-like member while pulling it using the guide rollers provided on the frame as a guide, a large tensile stress is generated in the belt-like member, and the belt-like member is spirally wound. In particular, when the diameter (radius of curvature) is small, a larger tensile stress is applied to the portion on the outer surface side by bending. When pushing the male part of the joint into the female part to fit
A large tensile stress occurs in the female part. Since a certain degree of watertightness is required for the lining pipe, the contact surface pressure between the male part and the female part at the joint must be increased. Therefore, adjacent belt-shaped members are less likely to slide relatively at the joint, and a large tensile stress or torsional stress is generated at the joint. When the guide on which the guide rollers are provided is pulled out of the lining pipe after the lining pipe is formed, the lining pipe is squeezed from the inner surface by the passage of the guide, and a hoop stress to expand the diameter is applied, and the tensile stress on the outer surface side is reduced. It becomes even larger.
【0007】硬質塩化ビニル樹製の帯状部材を使用し、
上記特開平8−261363号公報記載のライニング施
工方法によって既設管渠内にライニング施工する場合に
おいても、前記のような原因によって、帯状部材あるい
は接合部に大きい応力やモーメントが発生し、その結
果、帯状部材が破壊されたり、施工に著しく困難を伴っ
たり、施工を続けることが全く不可能となることがあ
る。[0007] Using a belt-shaped member made of hard vinyl chloride tree,
Even when lining is performed in an existing sewer by the lining method described in JP-A-8-261363, a large stress or moment is generated in the band-shaped member or the joint due to the above-described causes. In some cases, the band-shaped member may be broken, the construction may be extremely difficult, or it may be impossible to continue the construction at all.
【0008】[0008]
【発明が解決しようとする課題】本発明はこのような従
来技術の問題点に鑑みてなされたものであって、特に低
温下において、硬質塩化ビニル樹脂製の帯状部材を使用
して、既設の管渠の内面に管状体を形成しライニングす
る方法において、帯状部材が破壊されたり、施工に困難
を伴うことなしに容易に実施することができる管状体
(ライニング管)の形成方法を提供することを目的とす
る。SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the prior art. In particular, at a low temperature, a belt-like member made of a hard vinyl chloride resin is used to form an existing member. A method of forming a tubular body (lining pipe) in a method of forming a tubular body on the inner surface of a sewer and lining the belt-like member without breaking the strip member and without difficulty in construction. With the goal.
【0009】[0009]
【課題を解決するための手段】上記の目的を達成するた
めに、本発明は、両側縁部に接合部が形成された硬質塩
化ビニル樹脂製の長尺の帯状部材を管渠内に連続的に供
給するとともに螺旋状に巻回し、相接する接合部を接合
して管渠内に管状体を形成することにより、管渠の内面
をライニング施工する方法において、帯状部材の表面温
度を20℃以上80℃以下の温度に加熱して管状体を形
成することを特徴とするものである。SUMMARY OF THE INVENTION In order to achieve the above object, the present invention relates to a method of continuously forming a long strip of rigid vinyl chloride resin having joints formed at both side edges in a sewer. In a method of lining the inner surface of a sewer by feeding the helical shape and spirally winding and joining abutting joints to form a tubular body in the sewer, the surface temperature of the belt-shaped member is set to 20 ° C. It is characterized by forming a tubular body by heating to a temperature of at least 80 ° C.
【0010】帯状部材の表面温度は、20℃以上80℃
以下、好ましくは30℃以上50℃以下とする。20℃
未満では伸び及び耐衝撃性が不充分なために、管状体を
形成する際に破壊が生じたり、硬度が高すぎて巻回しに
くく、管状体を形成するのが困難となることがある。ま
た、80℃を超えると弾性が急激に低下し、いわゆる
「腰が弱い」状態となって、正しい断面形状のライニン
グ管が得られにくかったり、接合部での接合がゆるくな
って、形成されたライニング管の水密性が低下すること
がある。更に、帯状部材の表面が軟化して、接合部でス
ムーズに滑動しにくくなり、作業が困難となることがあ
る。なお、帯状部材の表面温度は、巻回時の曲げにより
最大の引張応力がかかる外表面の部分の温度を他の部分
より高くすることが好ましい。[0010] The surface temperature of the belt-like member is 20 ° C or more and 80 ° C.
Or less, preferably 30 ° C. or more and 50 ° C. or less. 20 ° C
If it is less than 3, the elongation and impact resistance are insufficient, so that the tubular body may be broken at the time of formation, or the hardness may be too high to be wound easily, and it may be difficult to form the tubular body. On the other hand, when the temperature exceeds 80 ° C., the elasticity is sharply reduced, so that the so-called “stiffness” is formed, and it is difficult to obtain a lining pipe having a correct cross-sectional shape, or the joint at the joint is loosened. The watertightness of the lining pipe may be reduced. Further, the surface of the band-shaped member is softened, and it is difficult for the band-shaped member to smoothly slide at the joint portion, and the work may be difficult. It is preferable that the surface temperature of the belt-shaped member be higher at the outer surface where the maximum tensile stress is applied by bending during winding than at other portions.
【0011】帯状部材を加熱する手段としては特に限定
されないが、帯状部材を赤外線ヒーター照射、温風吹き
つけ、温水浸漬等により加熱する方法、案内ローラや挟
着用のローラを電熱、蒸気・温水・加熱油等の循環によ
り加熱しておいて、これらを圧接して加熱する方法など
が好適に実施される。また、必要に応じて保温を施した
り、局部的な追加加熱、再加熱等が行えるようにしても
よい。The means for heating the belt-like member is not particularly limited, but includes a method of heating the belt-like member by irradiating an infrared heater, blowing hot air, immersing in hot water, or heating the guide roller or the pinching roller with steam, hot water or heating. A method of heating by circulating oil or the like, and pressing them by heating, etc., is suitably implemented. In addition, if necessary, heat retention may be performed, or local additional heating, reheating, or the like may be performed.
【0012】なお、管状体の断面形状としては、円形、
楕円形、四角形などが挙げられ、四角形のときは角の部
分の曲率半径が小さいために大きい応力が発生し、割れ
やすくなるが、本発明により帯状部材の表面が軟化して
応力が小さくなり、割れを防止することができる。 (作用)管状体を形成する際の帯状部材の表面温度を2
0℃以上80℃以下とすることによって、帯状部材の表
面部分の弾性率が下がり、伸びと耐衝撃性が上がる。そ
の結果、巻回や接合部の嵌め合わせなどの加工が容易に
なり、また、加工の際に発生する応力やモーメントが低
下して、破壊が発生にくくなる。また、加熱温度は硬質
塩化ビニル樹脂の軟化80℃以下であるから、腰が弱い
状態まで軟化することはない。The cross-sectional shape of the tubular body is circular,
Elliptical, square and the like, and in the case of a square, a large stress is generated due to a small radius of curvature of the corner portion, and it is easy to crack, but the surface of the belt-shaped member is softened and the stress is reduced by the present invention, Cracks can be prevented. (Function) The surface temperature of the belt-shaped member when forming the tubular body is 2
By setting the temperature to 0 ° C. or more and 80 ° C. or less, the elastic modulus of the surface portion of the belt-shaped member decreases, and the elongation and the impact resistance increase. As a result, processing such as winding and fitting of a joint portion is facilitated, and the stress and moment generated during the processing are reduced, so that breakage is less likely to occur. In addition, since the heating temperature is 80 ° C. or less for softening the hard vinyl chloride resin, the hard vinyl resin does not soften to a weak state.
【0013】[0013]
【発明の実施の形態】以下、本発明の実施の形態につき
図面を参照しながら具体的に説明する。 (実施の形態1)図1は本発明方法の実施態様を示す説
明図、図2は本発明に使用される帯状部材の一例を示す
横断面図、図3は本発明に使用される製管機の一例を示
す縦断面図である。Embodiments of the present invention will be specifically described below with reference to the drawings. (Embodiment 1) FIG. 1 is an explanatory view showing an embodiment of the method of the present invention, FIG. 2 is a cross-sectional view showing an example of a belt-like member used in the present invention, and FIG. It is a longitudinal section showing an example of a machine.
【0014】図1に示すように、地上に設置された巻出
機Tから巻出される帯状部材100は、マンホールMを
通して地下に埋設されている既設管渠P内へ送りこま
れ、製管機1によって既設管渠P内で巻回され、両側縁
部の接合部が接合されてライニング管Lが形成され、同
時に製管機1が矢印のように右側へ進んで、形成された
ライニング管Lは既設管渠P内に残置されてライニング
がなされる。As shown in FIG. 1, a strip-shaped member 100 unwound from an unwinder T installed on the ground is sent through a manhole M into an existing sewer P buried underground, and the pipe making machine 1 Is wound in the existing sewer P, and the joints of both side edges are joined to form a lining pipe L. At the same time, the pipe-making machine 1 proceeds to the right as shown by the arrow, and the formed lining pipe L The lining is made by remaining in the existing sewer P.
【0015】しかるに、マンホールM内の製管機1の手
前には加熱装置Hが設置されていて、帯状部材100は
製管機1に送りこまれる前に加熱装置Hを通過すること
により、管状体に形成されるときの表面温度が20℃以
上80℃以下となるように加熱される。However, a heating device H is installed in the manhole M in front of the tube-making machine 1, and the belt-shaped member 100 passes through the heating device H before being sent to the tube-making machine 1. It is heated so that the surface temperature when it is formed into 20 ° C. or more and 80 ° C. or less.
【0016】帯状部材100(Aタイプと称する)は、
硬質塩化ビニル樹脂の押出成形により製せられたもの
で、図2に示すように、本体部101は一定厚さの平板
状をなし、本体部101の外面側(図の上側)には、凹
溝105が形成された、断面がほぼ円環状の突条102
a、ほぼI字状断面の長い突条102b、同じくほぼ逆
L字状断面の突条102c、I字状断面の短い突条10
2dが長手方向にそれぞれ連続して突設されている。こ
れらの突条は帯状部材100を巻回して管状体を形成し
たときに管状体に剛性を付与するための補強リブとな
る。The belt-shaped member 100 (referred to as A type)
As shown in FIG. 2, the main body 101 has a flat plate shape with a constant thickness, and a concave portion is formed on the outer surface side (upper side of the figure) of the main body 101 as shown in FIG. A ridge 102 having a groove 105 formed therein and having a substantially annular cross section.
a, a long ridge 102b having a substantially I-shaped cross section, a ridge 102c having a substantially inverted L-shaped cross section, and a short ridge 10 having a short I-shaped cross section.
2d are continuously provided in the longitudinal direction. These ridges serve as reinforcing ribs for imparting rigidity to the tubular body when the tubular member is formed by winding the belt-shaped member 100.
【0017】また、帯状部材100の左端側(突条10
2aの左側)には斜方向上向きの張出し部103が延設
され、右端側(突条102dの右側)には傾斜縁部10
4が延設されている。そして、突条102aと張出し部
103を含む左端部が左側の接合部100A、突条10
2dと傾斜縁部104を含む右端部が右側の接合部10
0Bを形成していて、突条102dの上から突条102
aの凹溝105を嵌合するようにして接合部100Bに
接合部100Aを重ね合わせ、挟圧することにより管状
体(ライニング管)が形成され、管状体の内面側(図の
下側)はほとんど段差なく接合されるように構成されて
いる。なお、106は形成された管状体の水密性を確保
するための弾性シール部材である。The left end of the belt-shaped member 100 (the ridge 10
2a), an obliquely upward projecting portion 103 is extended on the right side (the right side of the ridge 102d).
4 is extended. The left end portion including the ridge 102a and the overhanging portion 103 has a left joining portion 100A, the ridge 10
The right end including the 2d and the inclined edge 104 is the right joint 10.
0B, and the ridge 102d is formed on the ridge 102d.
A tubular body (lining tube) is formed by overlapping the joint 100A on the joint 100B so as to fit the concave groove 105 of FIG. It is configured to be joined without a step. Reference numeral 106 denotes an elastic seal member for ensuring the watertightness of the formed tubular body.
【0018】製管機1は、前記特開平8−261363
号公報記載のものと基本的に同じ構造を有するものであ
る。即ち、図3に示すように、成形フレーム2に多数個
の案内ローラ3及び180°の間隔を置いて油圧モータ
7によって駆動される一対の内面ローラ4と外面ローラ
5よりなる接合ローラ部が設けられている。The tube making machine 1 is disclosed in Japanese Patent Application Laid-Open No. 8-261363.
It has basically the same structure as that described in Japanese Patent Publication No. That is, as shown in FIG. 3, a plurality of guide rollers 3 and a joining roller portion composed of a pair of inner rollers 4 and outer rollers 5 driven by a hydraulic motor 7 at 180 ° intervals are provided on the forming frame 2. Have been.
【0019】次に、図1に示す帯状部材100と図2に
示す製管機1を用いて既設管渠の内面をライニング施工
する工程を説明する。製管機1は最初ライニングされる
既設管渠P内の一端側に置かれている。巻出機Tに巻か
れている帯状部材100を引出し、加熱装置Hを通過さ
せて、その先端部を製管機1の回転する内面ローラ4と
外面ローラ5で挟むと、帯状部材100は巻出装置Tか
ら連続的に巻き出される。巻き出される帯状部材100
を成形フレーム2に沿って配置されている案内ローラ3
に沿わせてその外側を通過させ、成形フレーム2上に配
置されている駆動式の内面ローラ4と外面ローラ5より
なる接合ローラ部6Aを通過させ、次いで180°隔た
った接合ローラ部6Bに導いて、先端部の右側の接合部
100Bと先端部から1周(1ピッチ)後方の部分の左
側の接合部100Aとを重ね合わせると、重ね合わせた
部分が内面ローラ4と外面ローラ5で挟圧されて、図2
に示すように、相接する接合部100Bと接合部100
Aが螺旋状に接合されて、短管が形成される。Next, a process of lining the inner surface of an existing sewer using the belt-shaped member 100 shown in FIG. 1 and the pipe making machine 1 shown in FIG. 2 will be described. The pipe-making machine 1 is placed at one end side in an existing pipe P to be lined first. When the belt-shaped member 100 wound around the unwinding machine T is pulled out, passed through the heating device H, and the leading end thereof is sandwiched between the rotating inner roller 4 and the outer roller 5 of the pipe-making machine 1, the belt-shaped member 100 is wound. It is unwound continuously from the unwinding device T. Unwound strip 100
Guide rollers 3 arranged along the forming frame 2
Along the outside thereof, pass through a joining roller portion 6A composed of a drive type inner roller 4 and an outer roller 5 disposed on the forming frame 2, and then guide to a joining roller portion 6B separated by 180 °. Then, when the right joining portion 100B of the leading end portion and the joining portion 100A on the left side of one turn (one pitch) behind the leading end portion are overlapped, the overlapped portion is pressed by the inner roller 4 and the outer roller 5. FIG. 2
As shown in FIG.
A is helically joined to form a short tube.
【0020】引き続いて、内面ローラ4と外面ローラ5
を駆動回転することにより、巻出装置Tから帯状部材1
00が巻き出され、上記と同様にして隣り合う右側の接
合部100Bと更に1ピッチ後方の部分の左側の接合部
100Aが連続的に挟圧され接合されて、上記短管に続
いて帯状部材100が螺旋状に接合される。そして、そ
れと同時に製管機1の全体は管周方向に公転し、且つ矢
印イの方向に前進する。これにより帯状部材100は螺
旋状に連続的に巻回され接合されて、ライニング管Lが
形成され、ライニング管Lは既設管渠P内に残置され
て、既設管渠Pの内面がライニングされる。Subsequently, the inner roller 4 and the outer roller 5
Is driven to rotate, so that the belt-shaped member 1
00 is unwound, and the adjacent right-side joint 100B and the left-side joint 100A, which is one pitch behind, are successively pressed and joined in the same manner as described above, and the strip-shaped member follows the short pipe. 100 are spirally joined. At the same time, the entire pipe making machine 1 revolves in the pipe circumferential direction and moves forward in the direction of arrow A. As a result, the belt-shaped member 100 is continuously wound and joined spirally to form a lining pipe L, and the lining pipe L is left in the existing sewer P, and the inner surface of the existing sewer P is lined. .
【0021】上記の工程において、周囲温度が20℃以
下と低い場合、あるいはライニング管Lに製管する際の
帯状部材100の表面温度が所望の温度以下の場合に
は、加熱装置Hにより、管状体が形成されるときの帯状
部材100の表面温度が20℃以上80℃以下の所望の
温度となるように加熱する。これによって帯状部材10
0の硬度が低下して柔軟になり、伸びと耐衝撃性が向上
して、巻回及び接合が行いやすくなるとともに、帯状部
材100あるいは形成されたライニング管Lが低温によ
り脆性破壊することが防止される。In the above process, when the ambient temperature is as low as 20 ° C. or less, or when the surface temperature of the belt-shaped member 100 at the time of forming the lining tube L is at or below a desired temperature, the heating device H causes Heating is performed so that the surface temperature of the band-shaped member 100 when the body is formed is a desired temperature of 20 ° C. or more and 80 ° C. or less. Thereby, the belt-shaped member 10
The hardness of the belt-like member 100 or the formed lining tube L is prevented from being brittlely broken at low temperature while the hardness and hardness of the belt-like member 100 are reduced, the flexibility and elongation and impact resistance are improved, and the winding and joining are facilitated. Is done.
【0022】(実施の形態2)図4(A)は本発明に使
用される帯状部材の他の一例を示す横断面図、(B)は
帯状部材の接合の仕方を示す斜視図、図5は製管機の他
の一例を示す縦断面図である。(Embodiment 2) FIG. 4A is a cross-sectional view showing another example of the band-shaped member used in the present invention, FIG. 4B is a perspective view showing how the band-shaped member is joined, and FIG. It is a longitudinal cross-sectional view which shows another example of a pipe-making machine.
【0023】図4に示す帯状部材200(Bタイプと称
する)は主材(主帯状部材)201と嵌合材202との
組み合わせよりなる。主材201は硬質塩化ビニル樹脂
の押出成形により製せられたものであって、突条201
a及び溝201bを有し、その両端部には接合部201
A及び201Bが形成されていて、相接する接合部20
1Aと201Bが突き合わされることによって嵌合溝2
01Cが形成される。A band member 200 (referred to as a B type) shown in FIG. 4 is composed of a combination of a main member (main band member) 201 and a fitting member 202. The main material 201 is formed by extrusion molding of a hard vinyl chloride resin.
a and a groove 201b, and a joint 201
A and 201B are formed, and the adjoining joint 20 is formed.
1A and 201B are abutted against each other to form a fitting groove 2
01C is formed.
【0024】嵌合材202も同じ硬質塩化ビニル樹脂の
押出成形により製せられたものである。嵌合材202は
主材201によって形成される嵌合溝201Cに弾圧的
に嵌合する嵌合突条202aを有していて、突き合わせ
て並べられた主材201の接合部201Aと201Bに
よって形成された嵌合溝201Cに嵌合材202を嵌合
させることにより、突き合わされた両側の主材201が
接合される構成とされている。The fitting member 202 is also made by extrusion molding of the same hard vinyl chloride resin. The fitting material 202 has a fitting ridge 202a that resiliently fits into a fitting groove 201C formed by the main material 201, and is formed by joining portions 201A and 201B of the main material 201 arranged side by side. By fitting the fitting member 202 into the fitted fitting groove 201C, the main members 201 on both sides that are abutted are joined.
【0025】図5に示す製管機8は管渠Paの一端側に
固定状態で据えつけられている。内面ローラ9と外面ロ
ーラ10とが一組となって成形フレーム11に軸支さ
れ、これら一組の内面ローラ9と外面ローラ10は既設
管渠Pの内径に合わせて、成形フレーム11の任意の円
周上に固定できる。そして内面ローラ9と外面ローラ1
0はそれぞれ駆動ベルト12、13を介して電動モータ
14と接続され、互いに逆方向に回転する。外面ローラ
10の外面は、主材201と嵌合材202に同時に噛み
合って同時に送りながら挟圧することができる形状とさ
れている。The pipe making machine 8 shown in FIG. 5 is fixedly installed at one end of a pipe Pa. The inner roller 9 and the outer roller 10 are supported as a set by a shaft on the forming frame 11, and the set of the inner roller 9 and the outer roller 10 can be any of the forming frame 11 according to the inner diameter of the existing pipe P. Can be fixed on the circumference. And the inner roller 9 and the outer roller 1
Numeral 0 is connected to the electric motor 14 via the drive belts 12 and 13, respectively, and rotates in opposite directions. The outer surface of the outer roller 10 has such a shape that it can be engaged with the main member 201 and the fitting member 202 at the same time, and can be pressed while being simultaneously fed.
【0026】製管機8は、製管機8の手前には加熱装置
Haが設置されていて、主材201及び嵌合材202と
も製管機8に送りこまれる前に加熱装置Haを通過する
ように構成されている。In the tube making machine 8, a heating device Ha is installed in front of the tube making device 8, and both the main member 201 and the fitting member 202 pass through the heating device Ha before being sent to the tube making device 8. It is configured as follows.
【0027】次に、図4に示す帯状部材200と図5に
示す製管機8を用いて既設管渠の内面をライニング施工
する工程を説明する。図示しない巻出機に巻かれている
主材201を、内面ローラ9と外面ローラ10で引出し
つつ螺旋状に巻回する。そして、その接合部201B
と、1周(1ピッチ)後方の部分の接合部201Aを突
き合わせると、嵌合溝201Cが形成される。Next, a process of lining the inner surface of an existing culvert using the strip member 200 shown in FIG. 4 and the pipe making machine 8 shown in FIG. 5 will be described. The main material 201 wound on an unwinder (not shown) is spirally wound while being pulled out by the inner roller 9 and the outer roller 10. And the joint 201B
When the joining portion 201A at the back of one round (one pitch) is abutted, a fitting groove 201C is formed.
【0028】同じく図示しない巻出機に巻かれている嵌
合材202を内面ローラ9と外面ローラ10で引出しつ
つ挟圧して、前記のようにして形成された嵌合溝201
Cに嵌合することにより、相接する主材201の接合部
201Aと201Bが接合される。これによって主材2
01は嵌合材202で螺旋状に連続的に接合されて、ラ
イニング管Laが形成され、既設管渠Paの内面がライ
ニングされる。Similarly, the fitting member 202 wound around the unwinding machine (not shown) is pulled out by the inner roller 9 and the outer roller 10 and squeezed to form the fitting groove 201 formed as described above.
By fitting into C, the joining portions 201A and 201B of the main material 201 that are in contact with each other are joined. The main material 2
Numeral 01 is continuously joined spirally by a fitting member 202 to form a lining pipe La, and the inner surface of the existing sewer Pa is lined.
【0029】上記実施の形態2の工程においても、加熱
装置Haにより、管状体が形成されるときの主材201
及び嵌合材202の表面温度が20℃以上80℃以下の
所望の温度となるように加熱する。これによって主材2
01及び嵌合材202の硬度が低下して柔軟になり、伸
びと耐衝撃性が向上して、巻回及び接合が行いやすくな
るとともに、主材201、嵌合材202、あるいは形成
されたライニング管Laが低温により脆性破壊するのが
防止される。Also in the process of the second embodiment, the main member 201 when the tubular body is formed by the heating device Ha.
The heating is performed so that the surface temperature of the fitting member 202 becomes a desired temperature of 20 ° C. or more and 80 ° C. or less. The main material 2
01 and the fitting material 202 are reduced in hardness and become flexible, elongation and impact resistance are improved, winding and joining are facilitated, and the main material 201, the fitting material 202, or the formed lining are formed. The tube La is prevented from brittle fracture due to low temperature.
【0030】(実施の形態3)図6は製管機の更に他の
例を示す正面図、図7は挟圧用の一対の内面ローラと外
面ローラの縦断面図である。(Embodiment 3) FIG. 6 is a front view showing still another example of the tube making machine, and FIG. 7 is a longitudinal sectional view of a pair of inner rollers and outer rollers for pinching.
【0031】図6に示す製管機15は、巻出機に近い側
からNo.1ローラ、No.2ローラ、No.3ローラ
の三対の挟圧用ローラを有し、各挟圧用ローラは図7に
示すように、内面ローラ16と外面ローラ17よりな
る。No.1ローラは帯状部材100(図2に示すもの
と同じ)を送り込むためのローラ、No.2ローラ及び
No.3ローラは送り込まれた帯状部材100を螺旋状
に巻回するとともに、接合部を重ね合わせ、挟圧するた
めのローラである。The tube making machine 15 shown in FIG. No. 1 roller, No. No. 2 roller, No. It has three pairs of pressing rollers of three rollers, and each pressing roller comprises an inner roller 16 and an outer roller 17, as shown in FIG. No. The roller No. 1 feeds the belt-shaped member 100 (same as that shown in FIG. 2). No. 2 roller and No. 2 The three rollers are rollers for spirally winding the fed belt-shaped member 100, overlapping the joints, and pressing.
【0032】図7に示すように、内面ローラ16及び外
面ローラ17は内部に電熱線を巻回した電熱ヒータ18
が内蔵されていて、外部電源より電熱ヒータ18に通電
することにより電熱ヒータ18が発熱して内面ローラ1
6と外面ローラ17が加熱され、内面ローラ16と外面
ローラ17に接する帯状部材100(図2に示すものと
同じ)の表面が加熱される。電熱ヒータ18の発熱量は
図示しない可変抵抗機により調節可能とされていて、帯
状部材100の表面温度を所望の温度に加熱することが
できる。As shown in FIG. 7, an inner roller 16 and an outer roller 17 are provided with an electric heater 18 having a heating wire wound inside.
When the electric heater 18 is energized from an external power source, the electric heater 18 generates heat and the inner roller 1 is heated.
6 and the outer roller 17 are heated, and the surface of the belt-shaped member 100 (same as that shown in FIG. 2) in contact with the inner roller 16 and the outer roller 17 is heated. The amount of heat generated by the electric heater 18 can be adjusted by a variable resistor (not shown), so that the surface temperature of the belt-shaped member 100 can be heated to a desired temperature.
【0033】なお、図6に示す製管機15は、通常、螺
旋状に巻回を始めるNo.2ローラのところで最も大き
い応力やモーメントが発生すると考えられるので、帯状
部材100の破壊に対しては、手前側のNo.1ローラ
で予熱するとともに、No.2ローラで本格加熱するの
が有効と考えられる。しかし周囲温度や風の状態や各ロ
ーラの位置関係等により、いずれか一対のローラだけで
の加熱や、No.1〜No.3全ローラでの加熱を行う
ようにしてもよい。The tube making machine 15 shown in FIG. It is considered that the largest stress and moment occur at the two rollers. No. 1 roller preheats. It is considered effective to perform full-scale heating with two rollers. However, depending on the ambient temperature, the state of the wind, the positional relationship between the rollers, etc., heating with only one pair of rollers, 1 to No. (3) Heating by all rollers may be performed.
【0034】図8は挟圧用ローラの他の例を示す縦断面
図である。内面ローラ19及び外面ローラ20の内部に
は加熱油流路22が設けられていて、図示しない油加熱
機から供給される加熱油はローラ軸21を通って内面ロ
ーラ19と外面ローラ20に流入し、加熱油流路22を
流通して内面ローラ19、外面ローラ20が加熱される
構造とされている。FIG. 8 is a longitudinal sectional view showing another example of the pressing roller. A heating oil passage 22 is provided inside the inner roller 19 and the outer roller 20, and heating oil supplied from an oil heater (not shown) flows into the inner roller 19 and the outer roller 20 through a roller shaft 21. The inner roller 19 and the outer roller 20 are heated by flowing through the heating oil flow path 22.
【0035】以下に本発明の具体的な実施例について説
明する。 (実施例1〜4)図3に示す製管機1を用いて、突条の
高さh1 が約21.5mmのAタイプの硬質塩化ビニル
樹脂製帯状部材100を螺旋状に巻回し、内径1000
mm、長さ10mのライニング管を製管した。周囲温度
は−10℃であったが、温水浸漬または温風吹きつけに
よって、製管時の帯状部材の表面温度が20℃以上80
℃以下となるように加熱した。なお、製管速度は15c
m/分であった。そして、各実施例について、製管工程
中及び製管後の帯状部材及び接合部について、割れ、折
れ、変形、その他の異常の有無を検査した。Hereinafter, specific examples of the present invention will be described. (Examples 1 to 4) Using a pipe making machine 1 shown in FIG. 3, a belt-shaped member 100 made of an A-type hard vinyl chloride resin having a ridge height h 1 of about 21.5 mm was spirally wound. Inner diameter 1000
A lining pipe having a length of 10 mm and a length of 10 mm was produced. The ambient temperature was −10 ° C., but the surface temperature of the belt-shaped member at the time of pipe production was 20 ° C. or more by immersing in hot water or blowing hot air.
It heated so that it might be below ° C. The pipe making speed is 15c
m / min. Then, for each example, the strip-shaped members and the joints during and after the pipe-forming process were inspected for cracks, breaks, deformations, and other abnormalities.
【0036】(実施例5〜8)図5に示す製管機7を用
いて、突条の高さh2 が約8mmのBタイプの硬質塩化
ビニル樹脂製帯状部材100を螺旋状に巻回し、内径2
50mmのライニング管を製管した。製管時の帯状部材
の表面温度は20℃以上80℃以下となるように加熱し
た。なお、製管速度は30cm/分であった。そして、
各実施例について、実施例1〜4と同じように、製管工
程中及び製管後の異常の有無を検査した。(Examples 5 to 8) Using a pipe making machine 7 shown in FIG. 5, a belt-shaped member 100 made of a hard vinyl chloride resin of B type having a ridge height h 2 of about 8 mm is spirally wound. , Inner diameter 2
A 50 mm lining tube was made. Heating was performed so that the surface temperature of the belt-shaped member at the time of pipe production was 20 ° C or higher and 80 ° C or lower. In addition, the pipe production speed was 30 cm / min. And
In each of the examples, the presence or absence of an abnormality during and after the pipe making process was inspected in the same manner as in Examples 1 to 4.
【0037】(実施例9)図6に示す製管機15(電熱
式)を用い、No.1ローラ及びNo.2ローラの内面
ローラ16及び外面ローラ17の両方を、製管時の帯状
部材の表面温度が20℃となるように加熱して、突条の
高さh1 が約21.5mmのAタイプの硬質塩化ビニル
樹脂製帯状部材100を螺旋状に巻回し、内径1000
mm、長さ10mのライニング管を製管した。外気温度
は0℃、製管速度は30cm/分であった。そして、実
施例1〜4と同じように、製管工程中及び製管後の異常
の有無を検査した。(Embodiment 9) Using the tube making machine 15 (electric heating type) shown in FIG. 1 roller and no. Both the inner roller 16 and the outer roller 17 of the two rollers are heated so that the surface temperature of the belt-shaped member at the time of pipe production becomes 20 ° C., and the height h 1 of the ridge is about 21.5 mm. A belt member 100 made of hard vinyl chloride resin is spirally wound, and has an inner diameter of 1000.
A lining pipe having a length of 10 mm and a length of 10 mm was produced. The outside air temperature was 0 ° C., and the tube production speed was 30 cm / min. Then, in the same manner as in Examples 1 to 4, the presence or absence of an abnormality during and after the pipe making process was inspected.
【0038】(比較例1,2)加熱しない帯状部材及び
製管時の帯状部材の表面温度を80℃以上に加熱したも
のを使用した以外は、実施例1〜4と同じ方法で内径1
000mmのライニング管を製管した。そして、各比較
例について、実施例1〜4と同じように、製管工程中及
び製管後の異常の有無を検査した。(Comparative Examples 1 and 2) The same method as in Examples 1 to 4 was used, except that the unheated band member and the band member heated at a surface temperature of 80 ° C. or more during pipe production were used.
A 000 mm lining tube was made. Then, for each of the comparative examples, similarly to Examples 1 to 4, the presence or absence of abnormalities during the pipe making process and after the pipe making was inspected.
【0039】(比較例3,4)加熱しない帯状部材及び
製管時の帯状部材の表面温度を80℃以上に加熱したも
のを使用した以外は、実施例5〜8と同じ方法で内径2
50mmのライニング管を製管した。そして、各比較例
について、実施例1〜4と同じように、製管工程中及び
製管後の異常の有無を検査した。(Comparative Examples 3 and 4) The same method as in Examples 5 to 8 was used except that the unheated band member and the band member heated at a temperature of 80 ° C. or more during pipe production were used.
A 50 mm lining tube was made. Then, for each of the comparative examples, similarly to Examples 1 to 4, the presence or absence of abnormalities during the pipe making process and after the pipe making was inspected.
【0040】(比較例5)No.1〜No.3全ローラ
のいずれも加熱しなかった以外は、実施例9と同じ方法
で内径1000mmのライニング管を製管した。そし
て、実施例1〜4と同じように、製管工程中及び製管後
の異常の有無を検査した。(Comparative Example 5) 1 to No. A lining tube having an inner diameter of 1000 mm was produced in the same manner as in Example 9 except that none of the three rollers was heated. Then, in the same manner as in Examples 1 to 4, the presence or absence of an abnormality during and after the pipe making process was inspected.
【0041】以上の結果を表1にまとめて示す。The above results are summarized in Table 1.
【0042】[0042]
【表1】 [Table 1]
【0043】表1に示したように、製管時の帯状部材の
表面温度を20℃以上80℃以下となるように加熱した
場合には、製管工程中及び製管後の帯状部材及び接合部
について、割れ、折れ、変形、その他の異常は見られな
かった。しかるに、製管時の帯状部材の表面温度が20
℃以下(非加熱)の場合には割れが発生し、また80℃
以上の場合には変形が発生して、良好はライニング管が
得られなかった。As shown in Table 1, when the surface temperature of the belt-like member at the time of pipe-forming was heated so as to be 20 ° C. or more and 80 ° C. or less, the band-like member during the pipe-forming process and after the pipe-forming were joined. No cracks, breaks, deformations or other abnormalities were observed in the part. However, the surface temperature of the belt-like member during pipe production is 20
If the temperature is lower than 80 ° C (not heated), cracks will occur and
In the above case, deformation occurred, and a lining tube could not be obtained.
【0044】[0044]
【発明の効果】以上の説明から明らかなように、帯状部
材を管渠内で螺旋状に巻回し接合して管状体を形成し、
管渠の内面をライニング施工する方法において、本発明
により管状体を形成することによって、帯状部材の表面
部分の硬度が下がり、伸びと耐衝撃性が上がるので、帯
状部材が破壊することがなく、巻回や接合部の接合が容
易となる。しかも帯状部材が過度に軟化して変形が発生
することもない。As is apparent from the above description, the belt-shaped member is spirally wound in a pipe and joined to form a tubular body.
In the method of lining the inner surface of the sewer, by forming the tubular body according to the present invention, the hardness of the surface portion of the band-shaped member is reduced, and the elongation and impact resistance are increased, so that the band-shaped member is not broken, Winding and joining of the joining portion are facilitated. Moreover, there is no possibility that the belt-shaped member is excessively softened and deformed.
【図1】本発明の実施態様を示す説明図。FIG. 1 is an explanatory view showing an embodiment of the present invention.
【図2】本発明に使用される帯状部材の一例を示す横断
面図。FIG. 2 is a cross-sectional view showing an example of a belt-shaped member used in the present invention.
【図3】本発明に使用される製管機の一例を示す縦断面
図。FIG. 3 is a longitudinal sectional view showing an example of a pipe making machine used in the present invention.
【図4】(A)は本発明に使用される帯状部材の他の一
例を示す横断面図、(B)は帯状部材の接合の仕方を示
す斜視図。4A is a cross-sectional view showing another example of the belt-shaped member used in the present invention, and FIG. 4B is a perspective view showing a method of joining the belt-shaped members.
【図5】本発明に使用される製管機の他の一例を示す縦
断面図。FIG. 5 is a longitudinal sectional view showing another example of the tube making machine used in the present invention.
【図6】本発明に使用される製管機の更に他の一例を示
す正面図。FIG. 6 is a front view showing still another example of the tube making machine used in the present invention.
【図7】図6に示す製管機の挟圧用の内面ローラと外面
ローラの縦断面図。7 is a vertical sectional view of an inner roller and an outer roller for pinching of the tube making machine shown in FIG. 6;
【図8】挟圧用の内面ローラと外面ローラの他の例を示
す縦断面図。FIG. 8 is a longitudinal sectional view showing another example of the inner roller and the outer roller for clamping.
1,8,15 製管機 2,11 成形フレーム 3 案内ローラ 4,9,16,19 内面ローラ 5,10,17,20 外面ローラ 6A,6B 接合ローラ部 18 電熱ヒータ 22 加熱油流路 100,200 帯状部材 100A,100B 接合部 201 主材 201A,201B 接合部 201C 嵌合溝 202 嵌合材 H,Ha 加熱装置 L,La ライニング管 P,Pa 既設管渠 1,8,15 Tube making machine 2,11 Forming frame 3 Guide roller 4,9,16,19 Inner roller 5,10,17,20 Outer roller 6A, 6B Joining roller section 18 Electric heater 22 Heating oil flow path 100, 200 Band-shaped member 100A, 100B Joint 201 Main material 201A, 201B Joint 201C Fitting groove 202 Fitting H, Ha Heating device L, La Lining pipe P, Pa Existing pipe
Claims (1)
ビニル樹脂製の長尺の帯状部材を管渠内に連続的に供給
するとともに螺旋状に巻回し、相接する接合部を接合し
て管渠内に管状体を形成することにより、管渠の内面を
ライニング施工する方法において、帯状部材の表面温度
を20℃以上80℃以下の温度に加熱して管状体を形成
することを特徴とする管状体の形成方法。1. A long strip of rigid vinyl chloride resin having joints formed at both side edges is continuously supplied into a duct and spirally wound to join joints that are in contact with each other. In the method of lining the inner surface of a sewer by forming a tubular body in the sewer, forming the tubular body by heating the surface temperature of the belt-shaped member to a temperature of 20 ° C or more and 80 ° C or less. A method of forming a characterized tubular body.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17045697A JPH10305484A (en) | 1997-03-05 | 1997-06-26 | Method for forming tubular body |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5039697 | 1997-03-05 | ||
JP9-50396 | 1997-03-05 | ||
JP17045697A JPH10305484A (en) | 1997-03-05 | 1997-06-26 | Method for forming tubular body |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH10305484A true JPH10305484A (en) | 1998-11-17 |
Family
ID=26390869
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP17045697A Withdrawn JPH10305484A (en) | 1997-03-05 | 1997-06-26 | Method for forming tubular body |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH10305484A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007196666A (en) * | 2005-12-27 | 2007-08-09 | Adachi Kensetsu Kogyo Kk | Apparatus and method for forming lining tube for tubular conduit |
JP2008536027A (en) * | 2005-04-14 | 2008-09-04 | リブ ロック オーストラリア プロプライエタリー リミテッド | Apparatus and method for winding partially submerged underground pipe |
JP2009149049A (en) * | 2007-11-28 | 2009-07-09 | Sekisui Chem Co Ltd | Method of renewing existing pipe |
JP2012171124A (en) * | 2011-02-18 | 2012-09-10 | Sekisui Chem Co Ltd | Pipe making member and method of regenerating existing pipe |
JP2013199097A (en) * | 2012-03-26 | 2013-10-03 | Kubota Koken:Kk | Pipe composing member supply device, and pipe making method |
-
1997
- 1997-06-26 JP JP17045697A patent/JPH10305484A/en not_active Withdrawn
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008536027A (en) * | 2005-04-14 | 2008-09-04 | リブ ロック オーストラリア プロプライエタリー リミテッド | Apparatus and method for winding partially submerged underground pipe |
JP4750181B2 (en) * | 2005-04-14 | 2011-08-17 | セキスイ リブ ロック オーストラリア プロプライエタリー リミテッド | Apparatus and method for winding partially submerged underground pipe |
JP2007196666A (en) * | 2005-12-27 | 2007-08-09 | Adachi Kensetsu Kogyo Kk | Apparatus and method for forming lining tube for tubular conduit |
JP2009149049A (en) * | 2007-11-28 | 2009-07-09 | Sekisui Chem Co Ltd | Method of renewing existing pipe |
JP2012171124A (en) * | 2011-02-18 | 2012-09-10 | Sekisui Chem Co Ltd | Pipe making member and method of regenerating existing pipe |
JP2013199097A (en) * | 2012-03-26 | 2013-10-03 | Kubota Koken:Kk | Pipe composing member supply device, and pipe making method |
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