【発明の詳細な説明】本発明は、ガス導管、水道管、電力線や通信ケーブル等
の地中埋設管路等の長尺管内に紐状物を挿通する方法に
関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for inserting a string-like object into a long pipe such as a gas pipe, water pipe, underground conduit such as a power line or communication cable.
一般にこれらの管に内張クを施こしたわ清掃したシ内面
の状態、を検査したシ、又電力線等を挿通した９する場
合、これらの操作に先立つてガイドとなる紐状物（紐、
ロープ、ワイヤー、ベルト、針金等を含む）を挿通して
おき、この紐状物により他の物体等を挿通又は通過させ
ることが広く行われている。ところが、これらの管に最
初に紐状物を挿通するのが極めて困難である。短い管で
あれば金層線等を一方から押し込むことも可能であるが
、数百ｍにも及ぶ長い管について適用することはできな
い。又各種の自走式の装置などが提案されているが、構
造が複雑であつたわ、彎曲部分を挿通できなかつたシ、
又垂直方向に延びる管については適用できないものであ
るなど、使用に限界があつた。又、これらの装置が管の
途中で前進不能になると、それを引きもどすことができ
ず、管そのものが使えなくなるといつた事態も生じてい
たのである。又、柔軟なプラスチックの筒状フィルムを
流体圧力を用いて反転しながら管内へ挿通し、これを管
から引き抜＜方法も提案されているが、長い管に挿通さ
れた筒状フィルムを引き抜くにはかなり大きなりを要し
、フィルムが管の内面に擦られて傷ついたり、切断され
るような事が多かつた。本発明はかかる事態に鑑みなさ
れたものであつて、柔軟な筒状体を流体圧力を用いて反
転しながら挿通し、次いでこの筒状体を逆に反転しなが
ら管から引き抜くと同時に紐状物を管内に引き込み、挿
通するものであつて、紐状物の挿通に要する力カ司＼さ
くて済み、筒状体の摩擦損傷や切断等の事故が少なく、
筒状体を繰り返して使用することができる方法を提供す
るものである。第１図は本発明の一実施例を示すもので
ある。In general, when inspecting the inner surface of these pipes after lining and cleaning them, or when inserting power lines, etc., a string-like object (string, string,
It is widely practiced to insert a string-like object (including rope, wire, belt, wire, etc.) into the object, and to allow other objects to be inserted or passed through this string-like object. However, it is extremely difficult to initially insert the string-like material into these tubes. If the tube is short, it is possible to push the gold-layer wire or the like from one side, but this method cannot be applied to a tube as long as several hundred meters. In addition, various self-propelled devices have been proposed, but their structures are complicated, and they cannot be inserted through curved parts.
In addition, there were limitations in its use, as it could not be applied to pipes extending vertically. Furthermore, if these devices became unable to move forward in the middle of the pipe, they could not be pulled back and the pipe itself could become unusable. A method has also been proposed in which a flexible plastic cylindrical film is inserted into a tube while being inverted using fluid pressure, and then pulled out from the tube. This required a considerable amount of work, and the film was often scratched or cut by rubbing against the inner surface of the tube. The present invention has been made in view of such a situation, and involves inserting a flexible cylindrical body while inverting it using fluid pressure, and then pulling out the cylindrical body from the tube while inverting it in the opposite direction. It is a device that pulls and inserts a string into a pipe, and requires less force to insert a string-like object, and there are fewer accidents such as friction damage and cutting of the cylindrical object.
The present invention provides a method that allows a cylindrical body to be used repeatedly. FIG. 1 shows an embodiment of the present invention.
第１図に卦いて１は管、２は該管１の一端に接続された
カロ圧管であつて、圧力流体導入口３が設けられている
。４は筒状体収納容器であつて、その中央に設けられた
リール５に筒状体６が扁平に折畳まれた状態で捲回され
ている。In FIG. 1, 1 is a pipe, and 2 is a Calo pressure pipe connected to one end of the pipe 1, which is provided with a pressure fluid inlet 3. Reference numeral 4 denotes a cylindrical body storage container, in which a cylindrical body 6 is wound in a flat folded state around a reel 5 provided at the center thereof.
又該筒状体収納容器４には吐出口７が設けられ、該吐出
口７の先端が前記加圧管２に接続されている。筒状体６
の直径は管１の内径にほぼ等しいかそれよりも大きく、
その先端は、吐出口７から引き出され、加圧管２内を通
り、加圧管２と管１との間に環状に固定されている。又
筒状体６の他端には、該筒状体の長さにほぼ等しい長さ
の紐状長尺物８が接続されている。第１図ａはこの状態
を示すものである。ここで圧力流体導入口３から圧縮空
気等の圧力流体を送入すると、筒状体６の環状固定部分
の後部が加圧され、折ジ返し部分９が形成される。而し
て該折返し部分９に訃いて筒状体６は内側が外側になる
ように反転され、反転した筒状体６は管の内面に圧着さ
れると共に、前記折返し部分９は管内を前進する。この
状態を第１図ｂに示す。この時、リール５に捲回された
筒状体６は順次巻きもどされて、折返し部分９に供給さ
れる。筒状体６が全部リール５から引き出されると、こ
れに続いて紐状長尺物８が引き出され、管１内に引き込
まれる。筒状体６がその全長に亘つて反転されると、第
１図ｃに示すように、筒状体６は管１の全長に亘つて挿
通されて管１の内面に圧着され、さらにその筒状体６内
に紐状長尺物８が挿通された状態となる。次に、管１の
他端側に）いて、筒状体６の自由端に紐状物１０の一端
を接続する。Further, the cylindrical body storage container 4 is provided with a discharge port 7, and the tip of the discharge port 7 is connected to the pressurizing pipe 2. Cylindrical body 6
The diameter of is approximately equal to or larger than the inner diameter of tube 1,
The tip thereof is pulled out from the discharge port 7, passes through the pressure tube 2, and is fixed annularly between the pressure tube 2 and the tube 1. Further, a string-like elongated object 8 having a length approximately equal to the length of the cylindrical body is connected to the other end of the cylindrical body 6. FIG. 1a shows this state. When a pressure fluid such as compressed air is introduced from the pressure fluid introduction port 3, the rear part of the annular fixed portion of the cylindrical body 6 is pressurized, and a folded portion 9 is formed. Then, the cylindrical body 6 is turned over at the folded part 9 so that the inside becomes the outside, and the inverted cylindrical body 6 is pressed against the inner surface of the tube, and the folded part 9 advances inside the tube. . This state is shown in FIG. 1b. At this time, the cylindrical body 6 wound on the reel 5 is sequentially unwound and supplied to the folded portion 9. When the cylindrical body 6 is completely pulled out from the reel 5, the string-like elongated object 8 is subsequently pulled out and drawn into the tube 1. When the cylindrical body 6 is inverted over its entire length, the cylindrical body 6 is inserted over the entire length of the tube 1 and is crimped onto the inner surface of the tube 1, as shown in FIG. The string-like elongated object 8 is inserted into the shaped body 6. Next, one end of the string 10 is connected to the free end of the cylindrical body 6 at the other end of the tube 1.
又、筒状体収納容器４を加圧管２から取りはずし、ここ
にシール装置１１を取ｖつける。このシール装置１１は
、側壁に圧力流体導入口１２を備えた筒状１３内に柔軟
なチューブ１４を挿通し、該チューブ１４の両端を前記
筒体１３に気密に固定したものであつて、圧力流体導入
口１２から筒体１３とチューブ１４との間の空所に圧力
流体を送入することにより、チューブ１４を直径方向に
押しつぶし、筒状体６内の流体圧力を維持すると共に、
中を通る紐状長尺物８を挟持するようにしたものである
。なお、このシール装置１１は最初から加圧管２と筒状
体収納容器４との間に取ｖつけられていてもよい。紐状
長尺物８は、シール装置１１内を通り、引き取ジ装置１
５に捲回される。この状態を第１図ｄに示す。次いで加
圧管２内の流体圧力を維持しつつ引き取り装置１５を駆
動し、シール装置１１の挟圧力に抗して紐状長尺物８を
引張ると、筒状体６の自由端が外側が内側となるよう反
転しながら引き抜かれる。Further, the cylindrical body storage container 4 is removed from the pressurizing pipe 2, and the sealing device 11 is attached thereto. This sealing device 11 has a flexible tube 14 inserted into a cylindrical body 13 having a pressure fluid inlet 12 on the side wall, and both ends of the tube 14 are hermetically fixed to the cylindrical body 13. By feeding pressure fluid into the space between the cylindrical body 13 and the tube 14 from the fluid inlet 12, the tube 14 is crushed in the diametrical direction, and the fluid pressure inside the cylindrical body 6 is maintained.
It is designed to hold a string-like elongated object 8 passing through it. Note that this sealing device 11 may be installed between the pressurizing tube 2 and the cylindrical body storage container 4 from the beginning. The string-like long object 8 passes through the sealing device 11 and is removed from the receiving device 1.
It is rolled up to 5. This state is shown in FIG. 1d. Next, when the pulling device 15 is driven while maintaining the fluid pressure in the pressurizing tube 2 and the string-like elongated object 8 is pulled against the clamping force of the sealing device 11, the free end of the cylindrical body 6 is moved so that the outside is inside. It is pulled out while being turned over so that it becomes .
な）このとき、チューブ１４内の圧力流体は、一部はシ
ール装置１１等から漏出するが、過剰の圧力流体は前記
圧力流体導入口３から逆流して排出される。これと同時
に該自由端に接続された紐状物１０は筒状体６内に引き
込まれ、管１内に引き込まれる。この状態を第１図ｅに
示す。紐状長尺物８を引張る時に、捩ジながら引張ると
、筒状体６が捩られるため、巾方向に彎曲して断面形状
が小さくなり、管１の内面に圧着された筒状体６内を通
過する時の抵抗が小さくなり、引き取りに要する力が小
さくなる。筒状体６をその全長に亘つて引き抜くと、紐
状物１０は管１及び筒状体６に挿通された状態となる。
加圧管２を管１から取りはずすと、紐状物１０を全長に
亘つて挿通された管１が得られる。従つてこの紐状物１
０を用いて他の物品等を管１に挿通し又は管１内を通過
させることが可能である。な卦この実施例に卦いて、筒
状体６を反転して管１の内側に挿通した後、そのままリ
ール５を逆転させて筒状体６を引き抜くこともできる。
又、筒状体６内に挿通された紐状物は、必要に応じて引
き抜いて除去すればよい〜第２図に示すものは本発明の他の実施例である。At this time, a part of the pressure fluid in the tube 14 leaks from the sealing device 11 etc., but the excess pressure fluid flows back through the pressure fluid introduction port 3 and is discharged. At the same time, the string 10 connected to the free end is drawn into the cylindrical body 6 and into the tube 1. This state is shown in FIG. 1e. When the string-like elongated object 8 is pulled while being twisted, the cylindrical body 6 is twisted, so that it curves in the width direction and its cross-sectional shape becomes smaller, causing the inside of the cylindrical body 6 crimped to the inner surface of the tube 1 to become smaller. The resistance when passing through is reduced, and the force required to pick it up is reduced. When the cylindrical body 6 is pulled out over its entire length, the string 10 is inserted into the tube 1 and the cylindrical body 6.
When the pressure tube 2 is removed from the tube 1, the tube 1 with the string-like material 10 inserted over its entire length is obtained. Therefore, this string-like object 1
0 can be used to insert or pass other articles etc. into the tube 1. Furthermore, in this embodiment, after the cylindrical body 6 is reversed and inserted into the inside of the tube 1, the reel 5 can be reversed and the cylindrical body 6 can be pulled out.
Moreover, the string-like object inserted into the cylindrical body 6 may be removed by pulling it out as necessary. What is shown in FIG. 2 is another embodiment of the present invention.
この実施例に）いて、加圧管２の後端にスリット１６が
設けられておＶ１該加圧管２の後方に設けられたリール
５に捲回された筒状体６は、スリント１６から加圧管２
内に入う、加圧管２の先端に環状に固定されている。而
して加圧管２と管１とは接続されていない。第２図ａこ
の実施例において加圧管２内に圧力流体導入口３から圧
力流体を送入すると、筒状体６が反転し、その折り返し
部分が加圧管２の先端から突出する。この折り返し部分
９を管１の端部へ導き、管１内へ挿入すると、折勺返し
部分９は管内を進行し、筒状体の反転が進む。このとき
、リール５に捲回された筒状体６は、リール５から順次
引き出され、スリット１６から加圧管２内に進入し、さ
らに既に反転した筒状体内を通つて反転部分９に供給さ
れる。この状態を第２図ｂに示す。筒状体６が全部リー
ル５から引き出されると、それに続いて紐状長尺物８が
引出され、筒状体６の反転は進行し、第２図ｃに示す如
く管１の全長に亘つて筒状体６ぶ挿通され、圧着される
。次に先の実施例と同様筒状体６の自由端に紐状物１０
を接続し、第２図ｄ紐状長尺物８を引き戻して紐状物１
０を管１内に引き込む第２図ｅのであるが、この実施例
に訃いては加圧管２のスリット１６を通して紐状長尺物
８を引張ることができるので、先の実施例の如く筒状体
収納容器４を取りはずす必要はない。又この実施例にお
いても、加圧管２の後部にシール装置１１を設けておＫ
こともでき、この場合には該シール装置１１の後部は開
放しておいてもよい。筒状体６をその全長に亘つて管１
から引き抜くと、第２図ｆに示す如く紐状物１０を挿通
した管が得られるのである。In this embodiment, a slit 16 is provided at the rear end of the pressure tube 2. 2
It is annularly fixed to the tip of the pressurizing tube 2 that enters the interior. Therefore, the pressurizing pipe 2 and the pipe 1 are not connected. FIG. 2a In this embodiment, when pressure fluid is introduced into the pressurizing tube 2 from the pressurizing fluid inlet 3, the cylindrical body 6 is inverted and its folded portion protrudes from the tip of the pressurizing tube 2. When this folded portion 9 is guided to the end of the tube 1 and inserted into the tube 1, the folded portion 9 advances inside the tube and the cylindrical body is inverted. At this time, the cylindrical body 6 wound around the reel 5 is sequentially pulled out from the reel 5, enters the pressurizing tube 2 through the slit 16, and is further supplied to the inverted portion 9 through the already inverted cylindrical body. Ru. This state is shown in FIG. 2b. When the cylindrical body 6 is completely pulled out from the reel 5, the string-like elongated object 8 is subsequently pulled out, and the reversal of the cylindrical body 6 progresses, extending over the entire length of the tube 1 as shown in FIG. 2c. Six cylindrical bodies are inserted and crimped. Next, as in the previous embodiment, a string-like object 10 is attached to the free end of the cylindrical body 6.
2d, and pull back the string-like long object 8 to remove the string-like object 1.
0 into the tube 1, but in this embodiment, the string-like elongated object 8 can be pulled through the slit 16 of the pressure tube 2, so that it can be drawn into the tube 1 as in the previous embodiment. There is no need to remove the body storage container 4. Also in this embodiment, a sealing device 11 is provided at the rear of the pressurizing pipe 2.
In this case, the rear part of the sealing device 11 may be left open. The cylindrical body 6 is connected to the tube 1 over its entire length.
When pulled out from the tube, a tube with the string-like material 10 inserted therein is obtained as shown in FIG. 2f.
本発明の方法は、以上述べた如く最初に筒状体６を流体
圧力で反転しながら管１に挿通するので、数百〜数千ｍ
もの長い管についても適用することができ、しかも管に
屈曲部があつても差支えなく、管が水平方向でなくても
垂直又は傾斜したものであつても何の問題もなく適用で
きるものである。As described above, in the method of the present invention, the cylindrical body 6 is first inserted into the tube 1 while being reversed by fluid pressure, so that it can be inserted several hundred to several thousand meters.
It can be applied to long pipes, even if the pipe has bent parts, and can be applied even if the pipe is not horizontal but vertical or inclined. .
又、本発明においては、筒状体６を管１から引き抜く場
合に、筒状体６内に流体圧力を作用させながら反転させ
て引き抜くので、引き抜きに要する力は小さいもので済
む。又、筒状体６と管１とが摩擦することがないので、
筒状体６が損傷することがなく、一つの筒状体６を数回
繰Ｄ返して使用することができる。筒状体６は、軟質の
プラスチックのチューブを用いることができるが、薄く
柔軟な筒状布帛の外面又は内外両面に軟質プラスチック
を被覆したものを用いることもでき、このような補強さ
れた筒状体を用いれば寿命が長く、より多数回の繰返し
使用に耐える。な訃筒状体６は、管１の直径とほぼ等し
いか又はそれよりも大きいものであることが好ましい。
筒状体の直径が小さいと、筒状体６を管１から引き抜く
際にスムーズに反転しにくいからである。Further, in the present invention, when the cylindrical body 6 is pulled out from the pipe 1, the cylindrical body 6 is reversed and pulled out while applying fluid pressure inside the cylindrical body 6, so that the force required for pulling it out is small. Also, since there is no friction between the cylindrical body 6 and the tube 1,
One cylindrical body 6 can be used several times without damaging the cylindrical body 6. The cylindrical body 6 can be made of a soft plastic tube, but it can also be made of a thin, flexible cylindrical fabric whose outer surface or both inner and outer surfaces are coated with soft plastic. If the body is used, it has a longer lifespan and can withstand repeated use more times. Preferably, the diameter of the cylindrical body 6 is approximately equal to or larger than the diameter of the tube 1.
This is because if the diameter of the cylindrical body is small, it is difficult to turn over the cylindrical body 6 smoothly when pulling it out from the tube 1.
第１図及び第２図は、それぞれ本発明の実施例の工程を
示す模式図である。１・・・・・・管、６・・・・・・筒状体、８・・・・
・・紐状長尺物、９・・・・・・折ジ返し部分、１０・
・・・・・紐状物。FIG. 1 and FIG. 2 are schematic diagrams showing the steps of an embodiment of the present invention, respectively. 1...Tube, 6...Cylindrical body, 8...
... String-like long object, 9 ... Folded part, 10.
...String-like object.
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55007249AJPS5920248B2 (en) | 1980-01-23 | 1980-01-23 | How to thread a string-like object into a pipe |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55007249AJPS5920248B2 (en) | 1980-01-23 | 1980-01-23 | How to thread a string-like object into a pipe |
| Publication Number | Publication Date |
|---|---|
| JPS56104045A JPS56104045A (en) | 1981-08-19 |
| JPS5920248B2true JPS5920248B2 (en) | 1984-05-11 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP55007249AExpiredJPS5920248B2 (en) | 1980-01-23 | 1980-01-23 | How to thread a string-like object into a pipe |
| Country | Link |
|---|---|
| JP (1) | JPS5920248B2 (en) |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63299703A (en)* | 1987-05-28 | 1988-12-07 | Shikoku Kako Kk | Pneumatic feed type pipe approach film |
| CN113460790A (en)* | 2020-03-31 | 2021-10-01 | 西安量子智能科技有限公司 | Method for conveying objects in pipeline |
| Publication number | Publication date |
|---|---|
| JPS56104045A (en) | 1981-08-19 |
| Publication | Publication Date | Title |
|---|---|---|
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