JPH11234834A - Inner pipe coupling tool of piping jig and piping method using the same - Google Patents

Inner pipe coupling tool of piping jig and piping method using the same

Info

Publication number
JPH11234834A
JPH11234834A JP10225657A JP22565798A JPH11234834A JP H11234834 A JPH11234834 A JP H11234834A JP 10225657 A JP10225657 A JP 10225657A JP 22565798 A JP22565798 A JP 22565798A JP H11234834 A JPH11234834 A JP H11234834A
Authority
JP
Japan
Prior art keywords
duct
jig
inner pipe
pipe
push rod
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.)
Pending
Application number
JP10225657A
Other languages
Japanese (ja)
Inventor
Akira Yabuki
朗 矢吹
Hidemi Nishiyama
秀美 西山
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Furukawa Electric Co Ltd
Original Assignee
Furukawa Electric Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Furukawa Electric Co Ltd filed Critical Furukawa Electric Co Ltd
Priority to JP10225657A priority Critical patent/JPH11234834A/en
Publication of JPH11234834A publication Critical patent/JPH11234834A/en
Pending legal-status Critical Current

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  • Electric Cable Installation (AREA)

Abstract

PROBLEM TO BE SOLVED: To enable drawing a plurality of inner pipes en bloc into a duct, by connecting an arm in which a plurality of coupling rings for connecting inner pipes are installed, with a coupling member for drawing an inner pipe of a small diameter into a duct. SOLUTION: A coupling member 13 and two cylindrical rollers 17 on both sides of the middle part of the member 13 are rotatably attached to a piping jig 11 for drawing an inner pipe into a duct. A bolt 47 with a tension ring is screwed in the tip side of the coupling member 13. An inner pipe coupling tool 51 is fixed to the rear end side. In the inner pipe coupling tool 51, three coupling rings 55 are fixed to both ends of a rod type arm 52 and its central part, in order to be able to draw in three inner pipes at the same time. In this piping jig 11, 1-3 inner pipes are connected with the coupling rings 55, and tension material connected with the jig 11 is pulled back with a winch. Thus inner pipes are pulled in a duct (e.g. the inner diameter is 300 mm and the length is 35 m) together with the jig 11. The inner pipe is a corrugated polyethylene pipe or the like which has an inner diameter of 50 mm and is used as a conduit.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は、ダクト内に内管を
引き込むのに使用する通管用治具と、それを用いたダク
トへの通管方法に関するものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pipe jig used to draw an inner pipe into a duct, and a method of connecting a duct using the jig.

【0002】[0002]

【従来の技術】近年、高度情報化社会の実現に向け、多
くの通信ケーブルや各種制御ケーブルの布設が急速に進
められようとしている。こうした中で、ケーブル布設コ
ストの削減や、ケーブル布設のスピードアップを図るた
め、まず大きな断面積を有するダクト(トラフ又は大径
管など)を布設しておいて、その中に小径の内管(電線
管)を布設して、その内管の中にケーブルを引き込む方
式が実用化されつつある。この方式は、最初に大断面積
のダクトを布設してしまえば、その後は、地面を掘り起
こすことなく、ダクト内への内管の引き込みや、内管へ
のケーブルの引き込みができるため、工事のコスト低
減、スピードアップに有効とされている。
2. Description of the Related Art In recent years, many communication cables and various control cables have been rapidly laid for realizing an advanced information society. Under these circumstances, in order to reduce the cable laying cost and speed up the cable laying, first lay a duct having a large cross-sectional area (such as a trough or a large-diameter pipe) and place a small-diameter inner pipe ( An electrical conduit is laid, and a cable is drawn into the inner conduit. With this method, once the duct with a large cross-section is laid first, the inner pipe can be drawn into the duct and the cable can be drawn into the inner pipe without digging the ground. It is effective for cost reduction and speedup.

【0003】この方式において、ダクトの中に管を布設
する方法としては次の2通りが考えられている。 まずダクトの一端側から適度の剛性と可撓性を有す
る押し込み棒(FRPロッド等)を押し込み、押し込み
棒の先端がダクトの他端側に達したら、押し込み棒の先
端に内管を連結して、押し込み棒をダクトの一端側へ引
き戻すことにより管を引き込む。 まずダクトの一端側から押し込み棒を押し込み、押
し込み棒の先端がダクトの他端側に達したら、押し込み
棒の先端に引っ張り材(ワイヤー又はロープ等)を連結
して、押し込み棒をダクトの一端側へ引き戻し、その
後、押し込み棒と引っ張り材の連結を解除して、引っ張
り材に内管を連結し、引っ張り材をダクトの他端側へ引
き戻すことにより、内管を引き込む。
In this system, the following two methods are considered as a method of laying a pipe in a duct. First, push in a push rod (FRP rod, etc.) with appropriate rigidity and flexibility from one end of the duct, and when the tip of the push rod reaches the other end of the duct, connect the inner tube to the tip of the push rod. The tube is retracted by pulling the push rod back to one end of the duct. First, push the push rod from one end of the duct, and when the tip of the push rod reaches the other end of the duct, connect a pulling material (wire or rope, etc.) to the tip of the push rod and connect the push rod to one end of the duct. Then, the connection between the push rod and the pull member is released, the inner tube is connected to the pull member, and the pull member is pulled back to the other end side of the duct, thereby pulling the inner tube.

【0004】[0004]

【発明が解決しようとする課題】いずれの方法をとるに
しても、ダクト内に既に内管が布設されている場合に
は、既設の内管の本数が多くなればなるほど、ダクト内
に押し込み棒を押し込んで貫通させることが困難であ
る。その理由は、ダクト内に複数本の内管が布設されて
いるところに、押し込み棒を押し込んでいくと、押し込
み棒が内管の下にもぐり込んだり、内管と絡み合ったり
するためである。また仮に押し込み棒を貫通させること
ができたとしても、その後、押し込み棒の先端に内管を
連結して押し込み棒を引き戻すときには(のケー
ス)、内管が押し込み棒のルートに沿って引き込まれる
ことになるため、内管に過大な引き込み張力がかかり、
内管が破損したり、途中で内管の引き込みができなくな
ったりするおそれがある。のケースでも同様である。
Regardless of which method is used, if the inner pipe is already laid in the duct, the more the number of the existing inner pipes is, the more the pushing rod is inserted into the duct. Is difficult to push through. The reason is that, when the push rod is pushed into a place where a plurality of inner pipes are laid in the duct, the push rod gets under the inner pipe or becomes entangled with the inner pipe. Also, even if the push rod can be penetrated, when the inner pipe is connected to the tip of the push rod and then the push rod is pulled back (case), the inner pipe is drawn along the route of the push rod. , Excessive pulling tension is applied to the inner tube,
The inner pipe may be damaged, or the inner pipe may not be able to be pulled in the middle. The same applies to the case of.

【0005】押し込み棒の先端が既設の内管の下にもぐ
り込むのを防止する手段としては、特開平3−1286
10号公報や実開平4−14416号公報などにみられ
るように、押し込み棒の先端に球状または楕円球状のガ
イドを取り付けることが有効である。しかしこのような
ガイドを取り付けると、ガイドと既設の内管又はダクト
との摩擦が大きくなり、ダクトが長い場合には押し込み
棒の押し込みが困難になる。またガイドを取り付けたと
しても押し込み棒の先端が既設の内管を乗り越えてしま
うことがあり、その結果として追加布設される内管が既
設の内管を乗り越えた状態で(管同士が交差した状態
で)布設される場合が生じる。このように内管同士が交
差した状態で布設されると、後の内管の引き込みが困難
になるだけでなく、内管の曲がりが多くなるため内管の
中にケーブルを引き込むときに引き込み抵抗が大きくな
るという問題がある。この問題はダクトの布設ルートに
曲がりがある場合などに特に顕著になる。
[0005] As means for preventing the tip of the push rod from getting under the existing inner tube, Japanese Patent Laid-Open No. 3-1286 is disclosed.
It is effective to attach a spherical or elliptical spherical guide to the tip of the push rod, as seen in Japanese Patent Application Laid-Open No. 10-114, Japanese Utility Model Application Laid-Open No. 4-14416, and the like. However, when such a guide is attached, friction between the guide and the existing inner pipe or duct increases, and when the duct is long, it is difficult to push the push rod. In addition, even if the guide is attached, the tip of the push rod may get over the existing inner pipe, and as a result, the additional pipe laid over the existing inner pipe (when the pipes cross each other) ) Is laid. If the inner pipe is laid in such a way that the inner pipes cross each other, not only is it difficult to pull in the inner pipe later, but also the bending of the inner pipe increases, so the pull-in resistance when pulling the cable into the inner pipe is increased. There is a problem that becomes large. This problem is particularly remarkable when the duct installation route is bent.

【0006】またダクトには、トラフのような断面矩形
のダクトと、大径プラスチック管やコンクリート管のよ
うな断面円形のダクトとがあるため、場所によっては断
面円形のダクトと断面矩形のダクトの接続部が生じる場
合があり、このような断面形状が変化する接続部では、
押し込み棒の先端の引っ掛かりや、内管の先端の引っ掛
かりが生じ易いため、スムーズな押し込み、引き込みが
行えるようにすることが望まれている。
Further, since there are two types of ducts, a duct having a rectangular cross section such as a trough and a duct having a circular cross section such as a large-diameter plastic pipe or a concrete pipe, a duct having a circular cross section and a duct having a rectangular cross section may be used depending on the location. In some cases, a connecting portion may occur, and in such a connecting portion where the cross-sectional shape changes,
Since the distal end of the push rod and the distal end of the inner tube are easily caught, it is desired that the push-in and pull-in can be smoothly performed.

【0007】本発明の目的は、ダクト内に既に内管が布
設されている場合でも、また途中に断面円形のダクトと
断面矩形のダクトとの接続部がある場合でも、ダクト内
に容易に内管を布設することができるようにするための
通管用治具と、それを用いた通管方法を提供することに
ある。
It is an object of the present invention to easily insert an inner pipe into a duct even when a duct having a circular cross section and a duct having a rectangular cross section are provided in the middle of the duct. It is an object of the present invention to provide a pipe passing jig capable of laying a pipe and a pipe passing method using the same.

【0008】[0008]

【課題を解決するための手段】本発明に係る通管用治具
は、中心軸線をダクト方向に向けて配置される連結部材
を有し、この連結部材の両側にローラーを取り付け、か
つ前記連結部材の端部に押し込み棒、引っ張り材又は内
管の連結部を設けたことを特徴とするものである(請求
項1)。ローラーは連結部材に両側に対称に取り付ける
ことが好ましい。また押し込み棒等の連結部は連結部材
の両端に設けておくことが好ましい。
According to a first aspect of the present invention, there is provided a conduit jig having a connecting member arranged so that a central axis is directed toward a duct, rollers attached to both sides of the connecting member, and a connecting member. A push rod, a pull member, or a connecting portion of an inner tube is provided at an end of the inner tube (claim 1). The rollers are preferably mounted symmetrically on both sides of the connecting member. Further, it is preferable that connecting portions such as push rods are provided at both ends of the connecting member.

【0009】上記の通管用治具を使用すると、次のよう
な方法でダクトに内管を引き込むことができる。一つの
方法は、押し込み棒の先端に上記の通管用治具を連結し
た後、その押し込み棒をダクトの一端側からダクトに押
し込んで、通管用治具をダクトの他端側に到達させ、次
にダクトの他端側で前記通管用治具に引っ張り材を連結
した後、前記押し込み棒を引き戻して通管用治具をダク
トの一端側に到達させ、次にダクトの一端側で通管用治
具と押し込み棒の連結を解除し、通管用治具に内管を連
結した後、引っ張り材を引き戻してダクト内に内管を引
き込む、という方法である(請求項4)。
When the above-mentioned jig for pipe is used, the inner pipe can be drawn into the duct by the following method. One method is to connect the above-mentioned jig for pipe to the tip of the push rod, push the push rod from one end of the duct into the duct, and let the jig for pipe reach the other end of the duct. After connecting a pulling material to the jig for piping at the other end of the duct, the pushing rod is pulled back so that the jig for piping reaches one end of the duct, and then the jig for piping is set at one end of the duct. And the push rod is released from the connection, the inner pipe is connected to the pipe passing jig, and then the tension member is pulled back to draw the inner pipe into the duct (claim 4).

【0010】もう一つの方法は、押し込み棒の先端に上
記の通管用治具を連結した後、その押し込み棒をダクト
の一端側からダクトに押し込んで、通管用治具をダクト
の他端側に到達させ、次にダクトの他端側で前記通管用
治具に内管を連結した後、前記押し込み棒を引き戻して
ダクト内に内管を引き込む、という方法である(請求項
5)。
[0010] Another method is to connect the above-mentioned jig for pipe to the tip of the push rod, push the push rod into the duct from one end of the duct, and put the jig for pipe into the other end of the duct. After the inner pipe is connected to the passage jig at the other end of the duct, the push rod is pulled back to draw the inner pipe into the duct (claim 5).

【0011】いずれの方法をとるにしても、通管用治具
はローラーの回転によりダクト内を走行するため摩擦抵
抗が小さく、押し込み棒の押し込み、内管の引き込みを
小さな力で容易に行うことが可能となる。また断面円形
のダクトと断面矩形のダクトとの接続部があっても段差
に引っ掛かることなくスムーズに通過することが可能で
ある。
Regardless of which method is used, the jig for passing pipe runs in the duct by the rotation of the roller, so that the frictional resistance is small, so that the pushing rod can be pushed in and the inner pipe can be easily pulled in with a small force. It becomes possible. Even if there is a connection between the duct having a circular cross section and the duct having a rectangular cross section, the duct can smoothly pass without being caught on a step.

【0012】本発明の通管用治具におけるローラーは、
この通管用治具がダクト内を走行してローラーの外端が
側方にある既設の内管と接触したときに、その内管を押
し退けられるだけの外径を有するものであることが望ま
しい(請求項2)。このようにすると、通管用治具がダ
クト内を走行するときに側方に既設の内管があってもそ
の下にもぐり込むことがなく、かつ既設の内管を押し退
けて追加布設する内管の通り道を確保することができ
る。したがって内管の追加布設を容易に行うことができ
ると共に、追加布設される内管が既設の内管と交差せず
に布設できるようになる。
[0012] The roller in the jig for passage of the present invention,
It is desirable that the jig for running pipe has an outer diameter enough to push the inner pipe when the outer end of the roller comes into contact with an existing inner pipe on the side while traveling in the duct ( Claim 2). In this way, even if there is an existing inner pipe on the side when the piping jig travels inside the duct, it does not penetrate under it, and it pushes away the existing inner pipe and removes the existing inner pipe. You can secure a path. Therefore, the additional laying of the inner pipe can be easily performed, and the additional inner pipe can be laid without crossing the existing inner pipe.

【0013】また本発明の通管用治具は、両側のローラ
ーの外端から外端までの幅Wが既設の内管の外径D以上
で、ローラーの外径Hが既設の内管の外径Dの1/3以
上であることが好ましい(請求項3)。このようにすれ
ば、既設の内管の間への落ち込み等が防止でき、走行が
よりスムーズになると共に、既設の内管の押し退けをよ
り確実に行うことができる。
Further, in the jig for passing pipe according to the present invention, the width W from the outer end to the outer end of the roller on both sides is equal to or larger than the outer diameter D of the existing inner pipe, and the outer diameter H of the roller is equal to the outer diameter of the existing inner pipe. It is preferably at least 1/3 of the diameter D (claim 3). With this configuration, it is possible to prevent a drop between the existing inner pipes and the like, thereby making traveling smoother and more reliably pushing out the existing inner pipe.

【0014】[0014]

【発明の実施の形態】以下、本発明の実施形態を図面を
参照して詳細に説明する。 〔実施形態1〕図1は本発明に係る通管用治具の一実施
形態を示す。この通管用治具11は、棒状六角ナットの
形態の連結部材13を備えている。この連結部材13の
中間部の両側には、連結部材13の中心軸線と直交する
方向に、支持軸15が溶接等により固定されている。両
支持軸15にはそれぞれ円筒状のローラー17が回転自
在に取り付けられている。これにより二つのローラー1
7は連結部材13の中心軸線に関して対称配置となる。
支持軸15の端部はローラー17の外端より引っ込ませ
て、ローラー17の外端から突出しないように工夫され
ている。またローラー17の外端の周縁17aは面取り
され、なめらかな曲面に仕上げられている。連結部材1
3は軸線方向にネジ孔19を有しており、このネジ孔1
9が後述する押し込み棒、引っ張り材又は内管の連結部
となっている。
Embodiments of the present invention will be described below in detail with reference to the drawings. [Embodiment 1] FIG. 1 shows an embodiment of a piping jig according to the present invention. This pipe fitting jig 11 includes a connecting member 13 in the form of a bar-shaped hexagon nut. On both sides of the intermediate portion of the connecting member 13, a support shaft 15 is fixed by welding or the like in a direction orthogonal to the central axis of the connecting member 13. A cylindrical roller 17 is rotatably attached to each of the support shafts 15. This allows two rollers 1
7 is symmetrically arranged with respect to the central axis of the connecting member 13.
The end of the support shaft 15 is designed to be retracted from the outer end of the roller 17 so as not to protrude from the outer end of the roller 17. The outer edge 17a of the outer end of the roller 17 is chamfered to have a smooth curved surface. Connecting member 1
3 has a screw hole 19 in the axial direction.
Reference numeral 9 denotes a push rod, a tension member, or a connecting portion of the inner tube described later.

【0015】この通管用治具11は使用時には、連結部
材13の中心軸線がダクト方向を向き、ローラー17が
ころがってダクトの中を走行する状態となる。ローラー
17は、通管用治具11がダクト内を走行してローラー
17の外端が側方にある既設の内管と接触したときに、
その内管を押し退けられるだけの外径を有している。具
体的にはローラー17の外径Hは、ダクト内に既に布設
されている内管(太さが異なる場合は最も太い内管)の
外径Dの1/3以上、好ましくは1/2.5以上にする
とよい。また両側のローラー17の外端から外端までの
幅Wは、既設の内管の外径D以上とすることが好まし
い。
In use, the pipe jig 11 is in a state in which the center axis of the connecting member 13 faces the direction of the duct, and the roller 17 rolls and runs through the duct. The roller 17 is moved when the passage jig 11 travels in the duct and the outer end of the roller 17 comes into contact with the existing inner pipe on the side.
It has an outer diameter enough to push the inner tube away. Specifically, the outer diameter H of the roller 17 is equal to or more than one-third of the outer diameter D of the inner pipe already laid in the duct (or the thickest inner pipe when the thickness is different), and is preferably 1/2. The number should be 5 or more. Further, the width W from the outer end of the roller 17 on both sides to the outer end is preferably equal to or larger than the outer diameter D of the existing inner pipe.

【0016】次にこの通管用治具11を使用した通管方
法の一実施形態を説明する。この実施形態では図2
(A)〜(C)の順序で通管を行う。図2において、2
1は地中の埋設されたダクト、23A、23Bはダクト
21の両端に設置されたハンドホール、25Kはダクト
21内に既に布設されている内管、25Sは新たに布設
する内管、27はFRPロッド等からなる押し込み棒、
29は押し込み棒27の巻き枠、31はワイヤー又はロ
ープ等からなる引っ張り材、33は引っ張り材31を巻
いたドラム、35は引っ張り材31を引き取るウイン
チ、37は引っ張り材31案内用の滑車、39は内管2
5Sを繰り出する回転台、11は通管用治具である。
Next, an embodiment of a pipe passing method using the pipe passing jig 11 will be described. In this embodiment, FIG.
The pipes are passed in the order of (A) to (C). In FIG. 2, 2
1 is a buried duct under the ground, 23A and 23B are hand holes installed at both ends of the duct 21, 25K is an inner pipe already laid in the duct 21, 25S is an inner pipe to be newly laid, 27 is Push rod made of FRP rod, etc.
29 is a winding frame of the push rod 27, 31 is a tension member made of a wire or a rope, 33 is a drum around which the tension member 31 is wound, 35 is a winch for pulling the tension member 31, 37 is a pulley for guiding the tension member 31, 39 Is the inner tube 2
A turntable for feeding 5S, and 11 is a jig for passage.

【0017】まず図2(A)に示すようにダクト21の
一端側で押し込み棒27の先端に通管用治具11を連結
した後、その押し込み棒27をダクト21に押し込んで
行く。押し込み棒27と通管用治具11との連結は、図
3に示すように押し込み棒27の先端に固定したボルト
41を連結部材13の後端側のネジ孔19(図1参照)
にねじ込み、弛み止めナット43を締め付けることによ
り行う。またこのとき、連結部材13の先端側のネジ孔
19には引っ張り環45付きのボルト47をねじ込み、
弛み止めナット49で締め付け固定しておくことが好ま
しい。
First, as shown in FIG. 2 (A), the ducting jig 11 is connected to the tip of the pushing rod 27 at one end of the duct 21, and then the pushing rod 27 is pushed into the duct 21. As shown in FIG. 3, the connection between the push rod 27 and the passage jig 11 is performed by using a bolt 41 fixed to the distal end of the push rod 27, as shown in FIG.
And tightening the locking nut 43. At this time, a bolt 47 with a pull ring 45 is screwed into the screw hole 19 on the distal end side of the connecting member 13.
It is preferable that the locking nut 49 is tightened and fixed.

【0018】押し込み棒27の押し込みにより通管用治
具11がダクト21の他端側に到達したら、そこで通管
用治具11に引っ張り材31を連結した後、図2(B)
に示すように押し込み棒27を引き戻して、引っ張り材
31をダクト21内に引き込む。通管用治具11と引っ
張り材31の連結は、前記引っ張り環45に引っ張り材
31の端部を接続することにより行う。
When the plunging jig 11 reaches the other end of the duct 21 by the pushing of the pushing rod 27, the tension member 31 is connected to the duct jig 11 there.
As shown in (2), the push rod 27 is pulled back, and the tension member 31 is drawn into the duct 21. The connection between the passage jig 11 and the tension member 31 is performed by connecting the end of the tension member 31 to the tension ring 45.

【0019】次に通管用治具11がダクト21の一端側
に到達したら、そこで通管用治具11と押し込み棒27
の連結を解除した後、図4に示すように連結部材13の
後端側に内管連結具51を取り付ける。この内管連結具
51は、一度に3本までの内管を引き込めるように、棒
状のアーム53の両端と中央部に3個の連結環55が取
り付けられているものである。中央部の連結環55と反
対側にはボルト57が突設されている。内管連結具51
はこのボルト57を連結部材13の後端側にねじ込み、
弛み止めナット59を締め付けることにより通管用治具
11に取り付けられる。
Next, when the piping jig 11 reaches one end of the duct 21, the piping jig 11 and the push rod 27 are moved there.
After the connection is released, the inner pipe connecting tool 51 is attached to the rear end side of the connecting member 13 as shown in FIG. The inner pipe connecting tool 51 has three connecting rings 55 attached to both ends and a central portion of a rod-shaped arm 53 so that up to three inner pipes can be pulled in at a time. A bolt 57 protrudes from the central portion on the side opposite to the connecting ring 55. Inner pipe connector 51
Screw this bolt 57 into the rear end side of the connecting member 13,
The loosening nut 59 is tightened to be attached to the passage pipe jig 11.

【0020】内管連結具51の取り付けが終えたら、連
結環55に適当な接続具を用いて1〜3本の内管25S
を接続する。次いで図2(C)に示すように引っ張り材
31をウインチ35により引き戻してダクト21内に内
管25Sを引き込んでいく。通管用治具11がダクト2
1の他端側に到達したら、そこで連結環55と内管25
Sの接続を解除すれば、内管25Sの布設が完了する。
このあと新たに内管を布設する必要が生じたときは、再
び同じ作業を行えばよい。
After the attachment of the inner pipe connecting tool 51 is completed, one to three inner pipes 25S are connected to the connecting ring 55 using an appropriate connecting tool.
Connect. Next, as shown in FIG. 2C, the tension member 31 is pulled back by the winch 35 and the inner pipe 25S is drawn into the duct 21. Passage jig 11 is duct 2
1, the connecting ring 55 and the inner tube 25
When the connection of S is released, the installation of the inner pipe 25S is completed.
Thereafter, when it becomes necessary to lay a new inner pipe, the same operation may be performed again.

【0021】この通管方法では、押し込み棒27の先端
に通管用治具11を連結してダクト21に押し込む場
合、図5に示すようにダクト21の壁面と既設の内管2
5Kとの間に通管用治具11が入るスペースがあれば、
既設の内管25Kが蛇行していても、それを押し退けな
がら通管用治具11が走行するため、押し込み棒27が
既設の内管25Kと交差することなくダクト21を貫通
するようになる。また通管用治具11が既設の内管25
Kを押し退けるため、追加布設する内管の通り道を確保
することができる。
In this pipe passing method, when the pipe fitting jig 11 is connected to the tip of the push rod 27 and pushed into the duct 21, as shown in FIG.
If there is a space between 5K and the jig 11 for pipe,
Even if the existing inner pipe 25K is meandering, the passage pipe jig 11 travels while pushing it down, so that the pushing rod 27 penetrates the duct 21 without intersecting with the existing inner pipe 25K. In addition, the jig for passing pipe 11 is connected to the existing inner pipe 25.
Since K is pushed away, a path for the inner pipe to be additionally laid can be secured.

【0022】またダクト21の壁面と既設の内管25K
との間に通管用治具11が入るだけのスペースがない場
合は、通管用治具11は既設の内管の上を走行すること
になるため、やはり押し込み棒が既設の内管と交差する
ことなくダクト21を貫通するようになる。また引っ張
り材31の引き込み工程、内管25Sの引き込み工程で
も通管用治具11は同様に走行する。したがってダクト
内に既設の内管があっても新たな内管の引き込みをスム
ーズに行うことができる。
The wall surface of the duct 21 and the existing inner pipe 25K
If there is not enough space for the jig 11 to enter, the jig 11 runs on the existing inner pipe, so that the pushing rod also crosses the existing inner pipe. Without passing through the duct 21. Also, in the step of pulling in the tension member 31 and the step of pulling in the inner pipe 25S, the passage jig 11 travels similarly. Therefore, even if there is an existing inner pipe in the duct, it is possible to smoothly draw in a new inner pipe.

【0023】〔実施形態2〕実施形態1の通管方法で
は、内管を引き込むのに引っ張り材31を使用したが、
図2(A)のように押し込み棒27の先端に通管用治具
11を連結してダクト21に押し込み、他端側に到達さ
せた後、他端側で通管用治具11に内管を連結して押し
込み棒27を引き戻すことにすれば、引っ張り材31を
使用することなく内管の引き込みを行うことができる。
[Embodiment 2] In the pipe passing method of Embodiment 1, the tension member 31 is used to draw the inner pipe.
As shown in FIG. 2 (A), the pipe jig 11 is connected to the tip of the push rod 27 and pushed into the duct 21 to reach the other end, and then the inner pipe is inserted into the pipe jig 11 at the other end. If the push rod 27 is connected and pulled back, the inner pipe can be pulled in without using the tension member 31.

【0024】[0024]

【実施例】実施形態1の通管用治具11を用いて、図6
のようにコンクリートトラフ61と高密度ポリエチレン
管63がレジューサー(異種管継手)65により接続さ
れたダクト21に、内管を引き込む試験を行った。コン
クリートトラフ61は内面幅250mm、内面高さ250
mm、長さ58m、高密度ポリエチレン管63は内径30
0mm、長さ35mである。ダクト21の両端にはハンド
ホールが設けられている。ダクト21の途中には曲率半
径30mの曲がりがある。このダクト21に引き込む内
管は、電線管として使用されている内径50mmの波付き
ポリエチレン管である。
FIG. 6 shows an example of using the piping jig 11 of the first embodiment.
As described above, a test was conducted in which the inner pipe was pulled into the duct 21 in which the concrete trough 61 and the high-density polyethylene pipe 63 were connected by a reducer (different pipe joint) 65. The concrete trough 61 has an inner surface width of 250 mm and an inner surface height of 250 mm.
mm, length 58m, high-density polyethylene tube 63 has an inner diameter of 30
It is 0 mm and 35 m long. Hand holes are provided at both ends of the duct 21. There is a bend with a radius of curvature of 30 m in the middle of the duct 21. The inner pipe drawn into the duct 21 is a corrugated polyethylene pipe having an inner diameter of 50 mm used as a conduit pipe.

【0025】内管の引き込みは次の手順で行った(符号
は図1〜図6参照)。 (1) 押し込み棒27を一方の(コンクリートトラフ6
1側の)ハンドホール23Aから空のダクト21内に押
し込む。 (2) 他方の(高密度ポリエチレン管63側の)ハンド
ホール23Bに押し込み棒27の先端が出てきたら、押
し込み棒27にワイヤー31を接続する。 (3) 押し込み棒27を引き戻してダクト21内にワイ
ヤー31を引き込む。
The inner tube was pulled in according to the following procedure (reference numerals are shown in FIGS. 1 to 6). (1) Push rod 27 into one (concrete trough 6
It is pushed into the empty duct 21 from the hand hole 23A (on the first side). (2) When the tip of the push rod 27 comes out of the other hand hole 23B (on the side of the high-density polyethylene pipe 63), the wire 31 is connected to the push rod 27. (3) The push rod 27 is pulled back to draw the wire 31 into the duct 21.

【0026】(4) 一方のハンドホール23Aにワイヤ
ー31の先端が出てきたら、押し込み棒27とワイヤー
31との接続を解除し、通管用治具11を図4の状態に
して、引っ張り環45にワイヤー31を接続し、連結環
55に3本の内管25Sを接続する。この際、次の内管
引き込みのために、中央の連結環55にパイロット線を
1本接続する。 (5) ワイヤー31をウインチ35により引き戻して、
3本の内管25Sをパイロット線と共に一括してダクト
21に引き込む。
(4) When the tip of the wire 31 comes out of one hand hole 23A, the connection between the push rod 27 and the wire 31 is released, the jig 11 is set in the state shown in FIG. And the inner ring 25 </ b> S is connected to the connecting ring 55. At this time, one pilot line is connected to the center connecting ring 55 for drawing in the next inner pipe. (5) Pull the wire 31 back by the winch 35,
The three inner tubes 25S are drawn into the duct 21 together with the pilot line.

【0027】(6) 他方のハンドホール23Bに通管用
治具11が到達したら、通管用治具11から内管25S
を取り外し、内管25Sをハンドホール23Bの外に数
m引き出して、先端に防水キャップを被せる。 (7) 一方のハンドホール23A側でも、内管25Sを
ハンドホール23Aの外数mのところで切断し、切断端
に防水キャップを被せる。これ以後は通管された3本の
内管が既設の内管25Kとなる。 (8) 次にパイロット線を引き戻して、ワイヤー31を
再びダクト21に引き込む。このときは通管用治具11
が既設の内管25K上を走行する。
(6) When the piping jig 11 reaches the other hand hole 23B, the inner pipe 25S is moved from the piping jig 11 to the inner pipe 25S.
Is removed, the inner tube 25S is pulled out of the hand hole 23B by several meters, and the tip is covered with a waterproof cap. (7) Also on the hand hole 23A side, the inner tube 25S is cut at a few meters outside the hand hole 23A, and the cut end is covered with a waterproof cap. Thereafter, the three inner pipes passed through become the existing inner pipe 25K. (8) Next, the pilot wire is pulled back, and the wire 31 is drawn into the duct 21 again. At this time, the pipe fitting jig 11
Travels on the existing inner pipe 25K.

【0028】(9) 一方のハンドホール23Aに通管用
治具11が到達したら、通管用治具11からパイロット
線を取り外し、通管用治具11に3本の内管25Sを接
続して、再びパイロット線を接続する。 (10) 再びワイヤー31をウインチ35により引き戻し
て、3本の内管25Sをパイロット線と共に一括してダ
クト21に引き込む。このとき通管用治具11は既設の
内管25K上を走行する。 (11) (6)〜(8) を繰り返す。これ以後は既設の内管2
5Kが6本となる。
(9) When the piping jig 11 arrives at one hand hole 23A, the pilot wire is removed from the piping jig 11, the three inner pipes 25S are connected to the piping jig 11, and again. Connect the pilot line. (10) The wire 31 is pulled back by the winch 35 again, and the three inner tubes 25S are drawn into the duct 21 together with the pilot wire. At this time, the piping jig 11 runs on the existing inner pipe 25K. (11) Repeat (6) to (8). After this, the existing inner pipe 2
5K becomes six.

【0029】(12) 一方のハンドホール23Aに通管用
治具11が到達したら、通管用治具11からパイロット
線を取り外し、通管用治具11に今度は1本の内管25
Sを接続して、再びパイロット線を接続する。 (13) 再びワイヤー31をウインチ35により引き戻し
て、1本の内管25Sをパイロット線と共にダクト21
に引き込む。このとき通管用治具11は既設の内管25
K上を走行する。
(12) When the piping jig 11 reaches one hand hole 23A, the pilot wire is removed from the piping jig 11, and the inner pipe 25 is now connected to the piping jig 11.
Connect S and connect the pilot line again. (13) The wire 31 is pulled back by the winch 35 again, and one inner tube 25S is connected to the duct 21 together with the pilot wire.
Draw in. At this time, the piping jig 11 is attached to the existing inner pipe 25.
Drive on K.

【0030】(14) (6)〜(8) を繰り返す。これ以後は
既設の内管25Kが7本となる。 (15) (12)〜(14)を繰り返す。これ以後は既設の内管2
5Kが8本となる。 (16) (12)〜(13)、 (6)〜(7) を繰り返す。その後、パ
イロット線およびワイヤー31を通管用治具11から外
し、パイロット線を一方のハンドホール23A側に引き
戻す。
(14) Steps (6) to (8) are repeated. Thereafter, the number of existing inner pipes 25K becomes seven. (15) Repeat (12) to (14). After this, the existing inner pipe 2
5K becomes eight. (16) Repeat (12)-(13) and (6)-(7). Thereafter, the pilot wire and the wire 31 are removed from the jig 11 for passing the pipe, and the pilot wire is pulled back to the one hand hole 23A side.

【0031】以上の作業でダクト21内に9本の内管を
布設することができた。内管を引き込むときの引き込み
張力は次のとおりであった。 1本目から3本目まで3本一括引き込み:約55kgf 4本目から6本目まで3本一括引き込み:約40kgf 7本目1本引き込み :約30kgf 8本目1本引き込み :測定せず 9本目1本引き込み :約50kgf
With the above operation, nine inner pipes could be laid in the duct 21. The retracting tension when retracting the inner tube was as follows. 1st to 3rd batch pull-in: approx. 55kgf 4th to 6th batch pull-up: 3 approx. 40kgf 7th 1st draw-in: approx. 30kgf 8th 1st pull-in: No measurement 9th 1st pull-in: approx. 50kgf

【0032】この通管試験の結果、本発明の通管用治具
を使用することにより、ダクト内に既設の内管があって
も比較的低い引き込み張力で(つまり既設の内管と引き
込みワイヤー又は新設の内管とが交錯することなく)、
スムーズに内管を追加布設できることが確認された。ま
たダクトが、断面矩形のダクトと断面円形のダクトが接
続された形態であっても、内管の引き込みに支障がない
ことも確認された。
As a result of this tube test, the use of the tube jig of the present invention makes it possible to use a relatively low drawing tension (that is, a connection between the existing inner tube and the drawing wire or wire) even if the existing inner tube is in the duct. (Without crossing with the newly built inner pipe),
It was confirmed that the inner pipe could be laid smoothly. It was also confirmed that even if the duct had a rectangular cross-section and a circular cross-section, there was no problem in drawing the inner pipe.

【0033】[0033]

【発明の効果】以上説明したように本発明によれば、ダ
クト内に既設の内管があっても比較的低い引き込み張力
で、スムーズに内管を追加布設できることができ、内管
の追加布設工事を容易に行うことができる。
As described above, according to the present invention, even if there is an existing inner pipe in the duct, the inner pipe can be laid smoothly with a relatively low drawing tension. Construction can be performed easily.

【図面の簡単な説明】[Brief description of the drawings]

【図1】 本発明に係る通管用治具の一実施形態を示
す、(A)は平面図、(B)は正面図、(C)は側面
図。
FIG. 1A is a plan view, FIG. 1B is a front view, and FIG. 1C is a side view, showing an embodiment of a piping jig according to the present invention.

【図2】 (A)〜(C)は本発明に係る通管方法の一
実施形態を工程順に示す断面図。
FIGS. 2A to 2C are cross-sectional views showing an embodiment of a pipe passing method according to the present invention in the order of steps.

【図3】 図1の通管用治具を押し込み棒の先端に取り
付けてダクトに押し込むときの状態を示す平面図。
FIG. 3 is a plan view showing a state in which the piping jig of FIG. 1 is attached to the tip of a pushing rod and pushed into a duct.

【図4】 図1の通管用治具に内管を連結してダクトに
引き込むときの状態を示す平面図。
FIG. 4 is a plan view showing a state where the inner pipe is connected to the passage jig of FIG. 1 and drawn into a duct.

【図5】 図1の通管用治具がダクト内を走行するとき
の状態の一例を示す断面図。
FIG. 5 is a cross-sectional view showing an example of a state when the piping jig of FIG. 1 travels in a duct.

【図6】 本発明の通管方法の試験に使用したダクトの
要部を示す、(A)は側面図、(B)は(A)のB−B
線断面図、(C)は(A)のC−C線断面図。
6A and 6B show a main part of a duct used in the test of the pipe passing method of the present invention. FIG. 6A is a side view, and FIG.
(C) is a cross-sectional view taken along line CC of (A).

【符号の説明】[Explanation of symbols]

11:通管用治具 13:連結部材 15:支持軸 17:ローラー 19:ネジ孔 21:ダクト 23A、23B:ハンドホール 25K:既設の内管 25S:追加布設する内管 27:押し込み棒 31:引っ張り材 35:ウインチ 11: Jig for passage 13: Connecting member 15: Support shaft 17: Roller 19: Screw hole 21: Duct 23A, 23B: Hand hole 25K: Existing inner tube 25S: Inner tube to be additionally laid 27: Push rod 31: Pull Lumber 35: Winch

─────────────────────────────────────────────────────
────────────────────────────────────────────────── ───

【手続補正書】[Procedure amendment]

【提出日】平成10年9月3日[Submission date] September 3, 1998

【手続補正1】[Procedure amendment 1]

【補正対象書類名】明細書[Document name to be amended] Statement

【補正対象項目名】発明の名称[Correction target item name] Name of invention

【補正方法】変更[Correction method] Change

【補正内容】[Correction contents]

【発明の名称】 通管用治具の内管連結具とそれを用い
た通管方法
[Title of the Invention] Inner pipe connector of jig for passing pipe and pipe passing method using the same

【手続補正2】[Procedure amendment 2]

【補正対象書類名】明細書[Document name to be amended] Statement

【補正対象項目名】特許請求の範囲[Correction target item name] Claims

【補正方法】変更[Correction method] Change

【補正内容】[Correction contents]

【特許請求の範囲】[Claims]

【手続補正3】[Procedure amendment 3]

【補正対象書類名】明細書[Document name to be amended] Statement

【補正対象項目名】0001[Correction target item name] 0001

【補正方法】変更[Correction method] Change

【補正内容】[Correction contents]

【0001】[0001]

【発明の属する技術分野】本発明は、ダクト内に内管を
引き込むのに使用する通管用治具の内管連結具と、それ
を用いたダクトへの通管方法に関するものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an inner pipe connector of a pipe jig used to draw an inner pipe into a duct, and a method of passing a pipe through the duct using the jig .

【手続補正4】[Procedure amendment 4]

【補正対象書類名】明細書[Document name to be amended] Statement

【補正対象項目名】0007[Correction target item name] 0007

【補正方法】変更[Correction method] Change

【補正内容】[Correction contents]

【0007】本発明の目的は、ダクト内に複数本の内管
を一括して引き込めるようにするための通管用治具の内
管連結具と、それを用いた通管方法を提供することにあ
る。
[0007] It is an object of the present invention to provide a plurality of inner pipes in a duct.
Of the pipe fittings to allow the
An object of the present invention is to provide a pipe connector and a pipe passing method using the same.

【手続補正5】[Procedure amendment 5]

【補正対象書類名】明細書[Document name to be amended] Statement

【補正対象項目名】0008[Correction target item name] 0008

【補正方法】変更[Correction method] Change

【補正内容】[Correction contents]

【0008】[0008]

【課題を解決するための手段】本発明に係る通管用治具
の内管連結具は、ダクト内に小径の内管を引き込むため
の通管用治具に取りつける内管連結具であって、アーム
の両端に内管を接続する連結環が取りつけられたものか
らなることを特徴とするものである(請求項1)。また
本発明に係る通管用治具の内管連結具は、アームの両端
と中央部に内管を接続する連結環が取りつけられたもの
とすることもできる(請求項2)。また本発明に係る通
管方法は、請求項1又は2記載の通管用治具の内管連結
具を用い、その内管連結具の連結環に内管を接続して、
ダクト内に内管を引き込むことを特徴とするものである
(請求項3)。
SUMMARY OF THE INVENTION A jig for a pipe according to the present invention.
The inner pipe connector is an inner pipe connector to be attached to a passage pipe jig for drawing a small-diameter inner pipe into a duct, and includes an arm
With connecting rings connecting the inner tubes at both ends
(Claim 1). Also
The inner pipe connector of the passage jig according to the present invention includes both ends of the arm.
With a connecting ring connected to the inner tube at the center
(Claim 2). The communication according to the present invention
The pipe method is an inner pipe connection of the through pipe jig according to claim 1 or 2.
Tool, connect the inner pipe to the connecting ring of the inner pipe connecting tool,
It is characterized in that the inner pipe is drawn into the duct
(Claim 3).

【手続補正6】[Procedure amendment 6]

【補正対象書類名】明細書[Document name to be amended] Statement

【補正対象項目名】0009[Correction target item name] 0009

【補正方法】削除[Correction method] Deleted

【手続補正7】[Procedure amendment 7]

【補正対象書類名】明細書[Document name to be amended] Statement

【補正対象項目名】0010[Correction target item name] 0010

【補正方法】削除[Correction method] Deleted

【手続補正8】[Procedure amendment 8]

【補正対象書類名】明細書[Document name to be amended] Statement

【補正対象項目名】0011[Correction target item name] 0011

【補正方法】削除[Correction method] Deleted

【手続補正9】[Procedure amendment 9]

【補正対象書類名】明細書[Document name to be amended] Statement

【補正対象項目名】0012[Correction target item name] 0012

【補正方法】削除[Correction method] Deleted

【手続補正10】[Procedure amendment 10]

【補正対象書類名】明細書[Document name to be amended] Statement

【補正対象項目名】0013[Correction target item name] 0013

【補正方法】削除[Correction method] Deleted

【手続補正11】[Procedure amendment 11]

【補正対象書類名】明細書[Document name to be amended] Statement

【補正対象項目名】0033[Correction target item name] 0033

【補正方法】変更[Correction method] Change

【補正内容】[Correction contents]

【0033】[0033]

【発明の効果】以上説明したように本発明によれば、ダ
クト内に複数本の内管を一括して引き込むことができ
る。
According to the present invention, as described above, a plurality of inner pipes can be collectively drawn into a duct.
You.

【手続補正12】[Procedure amendment 12]

【補正対象書類名】明細書[Document name to be amended] Statement

【補正対象項目名】図1[Correction target item name] Fig. 1

【補正方法】変更[Correction method] Change

【補正内容】[Correction contents]

【図1】 本発明に係る内管連結具を取りつける通管用
治具の一実施形態を示す、(A)は平面図、(B)は正
面図、(C)は側面図。
FIG. 1 is a plan view, (B) is a front view, and (C) is a side view showing one embodiment of a through pipe jig for mounting an inner pipe connecting tool according to the present invention.

【手続補正13】[Procedure amendment 13]

【補正対象書類名】明細書[Document name to be amended] Statement

【補正対象項目名】図2[Correction target item name] Figure 2

【補正方法】変更[Correction method] Change

【補正内容】[Correction contents]

【図2】 (A)〜(C)は図1の通管用治具を用いた
通管方法の一実施形態を工程順に示す断面図。
2 (A) to 2 (C) are cross-sectional views showing an embodiment of a pipe passing method using the pipe passing jig of FIG. 1 in the order of steps.

【手続補正14】[Procedure amendment 14]

【補正対象書類名】明細書[Document name to be amended] Statement

【補正対象項目名】図4[Correction target item name] Fig. 4

【補正方法】変更[Correction method] Change

【補正内容】[Correction contents]

【図4】 本発明に係る内管連結具の一実施形態を、図
1の通管用治具に取りつけた状態で示す平面図。
FIG. 4 is a view showing an embodiment of the inner pipe connector according to the present invention.
The top view shown in the state attached to the 1 jig for piping.

Claims (6)

【特許請求の範囲】[Claims] 【請求項1】ダクト(21)内に小径の内管(25S)
を引き込むための通管用治具であって、中心軸線をダク
ト方向に向けて配置される連結部材(13)を有し、こ
の連結部材(13)の両側にローラー(17)を取り付
け、かつ前記連結部材(13)の端部に押し込み棒(2
7)、引っ張り材(31)又は内管(25S)の連結部
(19)を設けたことを特徴とする通管用治具。
1. A small-diameter inner pipe (25S) in a duct (21).
A connecting member (13) arranged so that the central axis is directed toward the duct, and rollers (17) attached to both sides of the connecting member (13); A push rod (2) is inserted into the end of the connecting member (13).
7) A jig for passing pipes provided with a connecting portion (19) for a tension member (31) or an inner pipe (25S).
【請求項2】ローラー(17)は、この通管用治具(1
1)がダクト(21)内を走行してローラー(17)の
外端が側方にある既設の内管(25K)と接触したとき
に、その内管(25K)を押し退けられるだけの外径H
を有していることを特徴とする請求項1記載の通管用治
具。
The roller (17) is connected to the jig (1).
When 1) runs through the duct (21) and the outer end of the roller (17) comes into contact with the existing inner pipe (25K) on the side, the outer diameter is large enough to push the inner pipe (25K). H
The jig for pipes according to claim 1, further comprising:
【請求項3】両側のローラー(17)の外端から外端ま
での幅Wが既設の内管の外径D以上で、ローラー(1
7)の外径Hが既設の内管の外径Dの1/3以上である
ことを特徴とする請求項1記載の通管用治具。
3. A roller (1) having a width W from the outer end to the outer end of the rollers (17) on both sides is equal to or larger than the outer diameter D of the existing inner pipe.
The jig according to claim 1, wherein the outer diameter H of (7) is equal to or more than 1/3 of the outer diameter D of the existing inner pipe.
【請求項4】押し込み棒(27)の先端に請求項1ない
し3のいずれかに記載の通管用治具(11)を連結した
後、その押し込み棒(27)をダクト(21)の一端側
(23A)からダクト(21)に押し込んで、通管用治
具(11)をダクト(21)の他端側(23B)に到達
させ、 次にダクト(21)の他端側(23B)で前記通管用治
具(11)に引っ張り材(31)を連結した後、前記押
し込み棒(27)を引き戻して通管用治具(11)をダ
クト(21)の一端側(23A)に到達させ、 次にダクト(21)の一端側(23A)で通管用治具
(11)と押し込み棒(27)の連結を解除し、通管用
治具(11)に内管(25S)を連結した後、引っ張り
材(31)を引き戻してダクト(21)内に内管(25
S)を引き込む、ことを特徴とする通管方法。
4. A connecting rod (27) according to any one of claims 1 to 3 is connected to an end of the pushing rod (27), and the pushing rod (27) is connected to one end of the duct (21). (23A) into the duct (21) to allow the jig (11) to reach the other end (23B) of the duct (21). After connecting the pull member (31) to the jig for pipe (11), the pushing rod (27) is pulled back to make the jig for pipe (11) reach one end side (23A) of the duct (21). At one end (23A) of the duct (21), the connection between the jig for pipe (11) and the push rod (27) is released, and after the inner pipe (25S) is connected to the jig for pipe (11), it is pulled. The material (31) is pulled back and the inner pipe (25) is inserted into the duct (21).
S) drawing-in method.
【請求項5】押し込み棒(27)の先端に請求項1ない
し3のいずれかに記載の通管用治具(11)を連結した
後、その押し込み棒(27)をダクト(21)の一端側
(23A)からダクト(21)に押し込んで、通管用治
具(11)をダクト(21)の他端側(23B)に到達
させ、 次にダクト(21)の他端側(23B)で前記通管用治
具(11)に内管(25S)を連結した後、前記押し込
み棒(27)を引き戻してダクト(21)内に内管(2
5S)を引き込む、 ことを特徴とする通管方法。
5. A connecting rod (27) according to any one of claims 1 to 3 is connected to a tip of the pushing rod (27), and the pushing rod (27) is connected to one end of the duct (21). (23A) into the duct (21) to allow the jig (11) to reach the other end (23B) of the duct (21). After connecting the inner pipe (25S) to the passage pipe jig (11), the push rod (27) is pulled back and the inner pipe (2) is inserted into the duct (21).
5S).
【請求項6】既に内管(25K)が布設されているダク
ト(21)内にさらに内管(25S)を追加布設する場
合に、追加布設する内管(25S)をダクト(21)内
に引き込むのに先立って、請求項1ないし3のいずれか
に記載の通管用治具(11)をダクト(21)内に通す
ことを特徴とする通管方法。
6. When an inner pipe (25S) is additionally installed in a duct (21) in which an inner pipe (25K) is already installed, the inner pipe (25S) to be additionally installed is placed in the duct (21). 4. A pipe passing method, comprising passing the pipe passing jig (11) according to any one of claims 1 to 3 through a duct (21) prior to retraction.
JP10225657A 1998-02-12 1998-08-10 Inner pipe coupling tool of piping jig and piping method using the same Pending JPH11234834A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10225657A JPH11234834A (en) 1998-02-12 1998-08-10 Inner pipe coupling tool of piping jig and piping method using the same

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP3007998A JPH11234833A (en) 1998-02-12 1998-02-12 Tube inserting jig and tube inserting method using it
JP10225657A JPH11234834A (en) 1998-02-12 1998-08-10 Inner pipe coupling tool of piping jig and piping method using the same

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP3007998A Division JPH11234833A (en) 1998-02-12 1998-02-12 Tube inserting jig and tube inserting method using it

Publications (1)

Publication Number Publication Date
JPH11234834A true JPH11234834A (en) 1999-08-27

Family

ID=12293802

Family Applications (2)

Application Number Title Priority Date Filing Date
JP3007998A Pending JPH11234833A (en) 1998-02-12 1998-02-12 Tube inserting jig and tube inserting method using it
JP10225657A Pending JPH11234834A (en) 1998-02-12 1998-08-10 Inner pipe coupling tool of piping jig and piping method using the same

Family Applications Before (1)

Application Number Title Priority Date Filing Date
JP3007998A Pending JPH11234833A (en) 1998-02-12 1998-02-12 Tube inserting jig and tube inserting method using it

Country Status (1)

Country Link
JP (2) JPH11234833A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105896414A (en) * 2014-10-27 2016-08-24 无锡市神力通信工程有限公司 Installation rack of communication cables

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011078284A (en) * 2009-10-01 2011-04-14 Tokyo Electric Power Co Inc:The Method for removing of cable
JP4843735B1 (en) * 2011-02-14 2011-12-21 有限会社大和設備 Drainage pipe leak test method and jig

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105896414A (en) * 2014-10-27 2016-08-24 无锡市神力通信工程有限公司 Installation rack of communication cables

Also Published As

Publication number Publication date
JPH11234833A (en) 1999-08-27

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