JP2002286183A - Connecting device of underground buried pipeline material - Google Patents
Connecting device of underground buried pipeline materialInfo
- Publication number
- JP2002286183A JP2002286183A JP2001086848A JP2001086848A JP2002286183A JP 2002286183 A JP2002286183 A JP 2002286183A JP 2001086848 A JP2001086848 A JP 2001086848A JP 2001086848 A JP2001086848 A JP 2001086848A JP 2002286183 A JP2002286183 A JP 2002286183A
- Authority
- JP
- Japan
- Prior art keywords
- connection
- pipe
- pipe material
- peripheral surface
- joint
- 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
Links
Landscapes
- Excavating Of Shafts Or Tunnels (AREA)
- Joints With Sleeves (AREA)
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は例えば通信ケーブ
ル、電力線等の各種の配線類を路側帯等における地中に
埋設配線するとき、これらを保護収納すべく地中に埋設
配管されるポリエチレン樹脂製管を非開削工法によって
直接に埋め込み設置するに際し、短尺状で用意されてい
る単位材としての複数のポリエチレン樹脂製管を埋設現
場においてそれらの端部相互を一体長尺状に接続できる
ようにしたもので、接続することでポリエチレン樹脂製
管を断続させることなく、地中に連続供給できるように
した地中埋設用管路材の接続装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cable made of polyethylene resin buried underground to protect and store various wirings such as communication cables and power lines underground in a roadside zone or the like. When directly embedding pipes by the non-cutting method, a plurality of polyethylene resin pipes, which are prepared as short unit materials, can be connected to one another at the burial site in an integrated long form. The present invention relates to a device for connecting a pipe material for underground burial, which can be continuously supplied to the ground without intermittently connecting a polyethylene resin pipe by connecting.
【０００２】[0002]
【従来の技術】近時、通信ケーブル、電力線等の各種の
配線類を地中に埋設するに際し、環境負荷の低減、道路
工事の縮減、工事期間の短縮等の社会的要請に応えるた
めに、路面を掘削する開削工事を実施することなく非開
削で埋設工事を行う各種誘導式非開削工法が実施されつ
つある。この非開削工法は、発進抗から地中に貫入した
ドリルヘッドを地表面からの電磁誘導で深度、方向、傾
斜等を適宜に指示制御することでパイロット孔を開削形
成しながら到達立抗まで前進到達せしめ、その後、ドリ
ルヘッドに取り付けたパイプ引き込み治具に連結した所
定の配管類を、回転後退するバックリーマによって土砂
を解きほぐしながら、引き込み埋設するとしているもの
であり、その後に配管類内に所定のケーブル類を挿通さ
せるのである。2. Description of the Related Art In recent years, when burying various kinds of wiring such as communication cables and power lines in the ground, in order to meet social demands such as reduction of environmental load, reduction of road construction, and shortening of construction period, 2. Description of the Related Art Various inductive non-cutting methods for performing burial work without cutting without excavating a road surface are being implemented. In this non-digging method, the drill head that penetrates into the ground from the starting counter is controlled by electromagnetic induction from the ground surface as appropriate to control the depth, direction, inclination, etc. After that, predetermined pipes connected to the pipe drawing jig attached to the drill head are to be pulled in and buried while unraveling the earth and sand by the back reamer that rotates and retreats, and then specified in the pipes Cables are inserted.
【０００３】こうした非開削工法によって配管類を埋設
するとき、その配管類が可撓性ある連続した長尺状のも
のであれば、所定長さの配管類の端部をバックリーマー
に連結しておけばよく、バックリーマの後退に伴い配管
類の引き込み埋設作業が完了する。When burying pipes by such a non-cutting method, if the pipes are flexible and continuous, the ends of the pipes having a predetermined length are connected to a back reamer. It is good enough to complete the work of pulling and embedding the pipes with the retreat of the back reamer.
【０００４】[0004]
【発明が解決しようとする課題】しかして埋設すべき配
管類夫々が短尺状のもので、一体長尺状に連続形成され
ていない場合には、連続状態となるように予め接続して
おかなければならない。ところが例えば通信ケーブル等
を収納保護すべく埋設されるポリエチレン樹脂製の管路
材はその単位材としての１本のものでは、現場等へのト
ラック等による搬送を可能とさせること等のために例え
ばで直径が約３００ｍｍ程度、長さが約８０００乃至１
２０００ｍｍ程度としてある。そして埋設現場において
は、単位材としての加熱溶融した管路材の端部相互を溶
着接続することで所定長さのものとして形成している。
ただ所定長さに接続構成するとしても、それ自体の可撓
性は極めて小さいから巻回状に纏めることはできず、例
えば作業現場が狭隘であったり、交通量が多く、作業場
所が確保できなかったり等の場合であると、長尺状のま
まではその一時的な保管も困難である。If the pipes to be buried are of a short length and are not formed integrally and continuously, they must be connected in advance in a continuous state. Must. However, for example, a pipe material made of polyethylene resin which is buried to store and protect a communication cable or the like is used as one unit material so that it can be transported to a site or the like by a truck. With a diameter of about 300mm and a length of about 8000 to 1
It is about 2000 mm. At the burial site, the end portions of the heat-fused pipe material as a unit material are welded and connected to each other to have a predetermined length.
However, even if it is connected to a predetermined length, it cannot be rolled up because its flexibility is extremely small.For example, the work site is narrow, the traffic volume is large, and the work place can be secured. In such a case, it is difficult to temporarily store it in a long shape.
【０００５】また管路材が短尺状の所定長さに設定され
ていることで、複数の管路材夫々の端部を加熱溶融して
突き合わせ接続させるも、固化接続にはその端部相互を
突き合わせ接続するためのある一定の維持・待機時間が
必要である。それ故管路材が直接的に引き込まれるとき
には接続部位が固化されるに必要な待機時間に相当する
時間毎に引き込み作業を中断して、固化接続作業を行わ
ざるを得ないものである。そのためこうした埋設作業は
一般的に非能率的なものとなり、作業時間に無駄が生じ
得るばかりでなく、溶融される接続部位相互がしっかり
と固化されていないときには、地中への引き入れ時の引
き込み抵抗作用に起因して離反、解体されることもあっ
た。[0005] In addition, since the pipe material is set to a predetermined short length, the ends of each of the plurality of pipe materials are heated and melted to make a butt connection. A certain amount of maintenance and waiting time for butt connection is required. Therefore, when the pipe material is directly drawn in, the drawing-in operation must be interrupted every time corresponding to the standby time required for the connection portion to be solidified, and the solidification connection operation must be performed. As a result, such burial operations are generally inefficient, and not only can the work time be wasted, but also when the joints to be melted are not solidified, the resistance to pulling into the ground can be reduced. They were separated and dismantled due to the action.
【０００６】そこで本発明は叙上のような従来存した諸
事情に鑑み創出されたもので、作業現場が狭隘なために
長尺状に形成した管路材等の保管場所が確保できなくて
も、地中への引き込み埋設に際し、その引き込み作業に
平行して順次に管路材を接続しながら送り込むことで、
引き込み作業を中断させることなく連続的に遂行できる
ように埋設現場で管路材相互を迅速、確実に接続固定で
き、しかもその接続固定には大掛かりな設備、装置、特
別な工具等を要せず作業員の手作業でも簡単に行うこと
ができ、非開削工法によっての管路材の埋設工事の一層
の利便性を図るばかりでなく、単位材としての管路材相
互を強固に接続固定して引き込みに伴い生じ得る各種の
抵抗等によっても離反、分離させることなく、安定的な
一体化された長尺状の管路を埋設構成できるものとした
地中埋設用管路材の接続装置を提供することを目的とす
る。Accordingly, the present invention has been made in view of the above-mentioned various circumstances as described above. Since the work site is narrow, it is not possible to secure a storage space for elongate pipe material and the like. Also, when pulling and burying in the ground, by sending pipe materials sequentially while connecting in parallel with the pulling work,
The pipes can be connected and fixed quickly and reliably at the burial site so that the pull-in operation can be performed continuously without interruption, and the connection and fixing do not require large-scale facilities, equipment, special tools, etc. It can be easily performed even by the manual work of the worker, not only to improve the convenience of the burial work of the pipe material by the non-cutting method, but also to firmly connect and fix the pipe material as a unit material Provided is a connection device for underground buried pipe material, which can stably and integrally embed a long pipe without separating or separating due to various resistances and the like that may be caused by retraction. The purpose is to do.
【０００７】[0007]
【課題を解決するための手段】上述した課題を解決する
ため、本発明にあっては、相互に接続すべき管路材Ｐの
端部夫々に跨って管路材Ｐ夫々の外側に嵌め合わせ配装
される筒状のジョイント本体１と、管路材Ｐの端部夫々
の内側に嵌め入れられる内部筒体５と、管路材Ｐの外周
面、ジョイント本体１の内周面夫々に対向して形成され
た接続溝Ｐ１，２夫々に跨ってジョイント本体１外から
挿入される接続リング体１０とを備えているものであ
る。ジョイント本体１は、内周側面に、管路材Ｐの端部
に予め形成される管路材Ｐ側の管路材接続溝Ｐ１に対応
する位置で本体接続溝２を形成すると共に、外周面に、
管路材Ｐないしジョイント本体１自体の法線方向に沿っ
て本体接続溝２に連続している挿入口３を開口形成して
構成でき、また複数で形成した本体接続溝２夫々の挿入
口３はジョイント本体１の外周に沿ってずらした位置と
して構成できる。内部筒体５は、管路材Ｐの内径にほぼ
対応した外径を有する筒状に形成され、管路材Ｐの開口
端縁面に当接するストッパ片６を固定して構成できる。
接続リング体１０は管路材Ｐの外周面における曲率とほ
ぼ同一の曲率で湾曲されていて、一部が切除されること
で不連続なものとなっているほぼ円形のリング状に形成
することができる。In order to solve the above-mentioned problems, according to the present invention, each of the pipe members P to be connected to each other is fitted to the outside of each of the pipe members P over respective ends thereof. The tubular joint body 1 to be mounted, the inner tubular body 5 fitted inside each end of the pipe material P, the outer peripheral surface of the pipe material P, and the inner peripheral surface of the joint body 1 face each other. And a connection ring body 10 that is inserted from outside the joint body 1 across the connection grooves P1 and P2 formed as described above. The joint main body 1 forms a main body connection groove 2 at a position corresponding to a pipe material connection groove P1 on the pipe material P side formed in advance at an end portion of the pipe material P on an inner peripheral side surface, and also has an outer peripheral surface. To
An insertion opening 3 which is continuous with the main body connection groove 2 can be formed along the normal direction of the pipe material P or the joint main body 1 itself, and can be formed by a plurality of main body connection grooves 2. Can be configured as a position shifted along the outer periphery of the joint body 1. The inner tubular body 5 is formed in a tubular shape having an outer diameter substantially corresponding to the inner diameter of the pipe material P, and can be configured by fixing a stopper piece 6 that comes into contact with an opening edge surface of the pipe material P.
The connection ring body 10 is formed in a substantially circular ring shape that is curved with substantially the same curvature as the curvature on the outer peripheral surface of the pipe material P and is partially cut off to be discontinuous. Can be.
【０００８】以上のように構成された本発明に係る地中
埋設用管路材の接続装置にあって、相互に接続すべき管
路材Ｐと、この管路材Ｐの端部夫々の外側に跨って嵌め
合わせるジョイント本体１とが嵌め合っている内外周面
間で跨らせて挿入される接続リング体１０によって、互
いに突き合わせ配置した管路材Ｐ相互を接続固定させ
る。管路材Ｐの内側に嵌め入れられる内部筒体５は、管
路材Ｐ相互の外側に嵌め合わせるジョイント本体１と共
に管路材Ｐ相互の接続部分を直線的に保持して接続固定
状態を安定化させる。接続リング体１０は、位置が合わ
されたジョイント本体１内周側面の本体接続溝２、管路
材Ｐ外周側面の管路材接続溝Ｐ１両者に跨って挿入さ
れ、また接続リング体１０自体が円形に湾曲されている
から、接続リング体１０自体の不連続部位が管路材Ｐの
周方向で夫々がずれていることと相俟ち、管路材Ｐの筒
方向に沿う外力その他の付与によっても挿入位置から外
れず、管路材Ｐ相互間の接続固定を維持させる。円形リ
ング状の接続リング体１０は、管路材接続溝Ｐ１に合致
している本体接続溝２にジョイント本体１の外周面に開
口形成されている挿入口３から挿入されるとき、自身に
付与されている曲がり癖が本体接続溝２内への挿入作業
を円滑にさせ、管路材接続溝Ｐ１、本体接続溝２両者に
対する跨り状の挿入配置を確実にさせる。In the underground pipe connecting apparatus according to the present invention configured as described above, the pipes P to be connected to each other and the outside of each end of the pipes P are provided. The pipe members P butted against each other are connected and fixed by the connecting ring body 10 inserted across the inner and outer peripheral surfaces of the joint main body 1 that is fitted with the joint body 1 fitted over. The inner cylindrical body 5 fitted inside the pipe material P, together with the joint body 1 fitted to the outside of the pipe materials P, linearly holds a connection portion between the pipe materials P to stably connect and fix. To The connecting ring body 10 is inserted across both the main body connecting groove 2 on the inner peripheral side surface of the joint body 1 and the conduit material connecting groove P1 on the outer peripheral side surface of the conduit material P, and the connecting ring body 10 itself is circular. In addition to the fact that the discontinuous portions of the connection ring body 10 are displaced in the circumferential direction of the pipe material P, the connection ring body 10 itself is displaced in the cylindrical direction of the pipe material P by applying an external force or the like along the cylindrical direction of the pipe material P. Does not come off from the insertion position, and the connection and fixing between the pipe members P are maintained. The circular ring-shaped connecting ring body 10 is given to itself when it is inserted into the main body connecting groove 2 that matches the conduit material connecting groove P1 from the insertion opening 3 formed in the outer peripheral surface of the joint main body 1. The bending habits that have been performed make the insertion operation into the main body connection groove 2 smooth, and the straddling insertion arrangement in both the conduit connection groove P1 and the main body connection groove 2 is ensured.
【０００９】[0009]
【発明の実施の形態】以下図面を参照して本発明の一実
施の形態を説明すると、図において示される符号Ｐは、
非開削工法におけるパイロット孔に沿って埋設孔を掘削
しながら後退進行するバックリーマＲに連繋されて地中
に引き込み埋設される管路材であり、この管路材Ｐは例
えば直径が約３００ｍｍ程度のポリエチレン樹脂製のも
のとしてある。そして所定長さ例えば８０００ないし１
２０００ｍｍ程度の長さとして埋設現場に搬入された管
路材Ｐは、埋設方向に沿って相前後して配置されたとき
の端部相互を本発明に係る接続装置によって突き合わせ
られて接続固定され、長尺状に構成された状態で引き込
み埋設される。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.
A pipe material connected to a back reamer R that retreats while excavating a buried hole along a pilot hole in the uncutting method and is drawn into the ground and buried. The pipe material P has a diameter of, for example, about 300 mm. Made of polyethylene resin. And a predetermined length, for example, 8000 to 1
The pipe material P carried into the burial site as a length of about 2000 mm is fixed by being connected to each other by the connecting device according to the present invention at the ends when they are arranged one after the other in the burying direction, It is drawn and buried in a state of being formed in a long shape.
【００１０】そのため、端部の外周面に周方向に沿って
管路材接続溝Ｐ１が形成されていて、相互に接続される
べき管路材Ｐの端部夫々に跨って管路材Ｐ夫々の外側に
嵌め合わせ配装される筒状のジョイント本体（ソケッ
ト）１と、管路材Ｐの端部夫々の内側に嵌め入れられる
内部筒体５と、管路材Ｐの外周面、ジョイント本体１の
内周面夫々に対向して形成された接続溝Ｐ１，２夫々に
跨って挿入される適数本の接続リング体１０とを備えて
いるのである。[0010] For this reason, the pipe material connection grooves P1 are formed in the outer peripheral surface of the end along the circumferential direction, and each of the pipe materials P straddles each end of the pipe materials P to be connected to each other. A cylindrical joint body (socket) 1 fitted and arranged on the outside of the pipe, an inner tubular body 5 fitted inside each end of the pipe material P, an outer peripheral surface of the pipe material P, the joint body 1 is provided with an appropriate number of connection ring bodies 10 which are inserted across connection grooves P1 and P2 formed opposite to each other on the inner peripheral surface.
【００１１】ジョイント本体１は、地中に埋設されたと
きの耐腐食性がある例えば鋳鉄材によって管路材Ｐの外
径にほぼ対応した内径を有する筒状に形成されており、
接続すべき管路材Ｐ両者間に跨った状態で管路材Ｐ相互
間の接続部分が強制的にでも折曲されるような外力が付
与されてもそれに充分に耐え得る程度の保形性を発揮で
きる程度の長さ、例えば２００ｍｍ程度の長さに形成さ
れていて、両端外縁面は埋設時の抵抗を軽減するために
面取り処理が施されている。The joint body 1 is formed of, for example, a cast iron material having corrosion resistance when buried in the ground, and is formed in a cylindrical shape having an inner diameter substantially corresponding to the outer diameter of the pipe material P.
Shape retention enough to withstand an external force that is forcibly or bent at the connection between the pipe materials P while being straddled between the pipe materials P to be connected. , For example, about 200 mm in length, and the outer edge surfaces at both ends are chamfered to reduce the resistance at the time of embedding.
【００１２】このジョイント本体１の内周側面には、管
路材Ｐの端部に予め形成される管路材Ｐ側の管路材接続
溝Ｐ１に対応する位置で、本体接続溝２が適数本で形成
されている。この本体接続溝２は例えば断面で矩形を呈
しており、相互に対向する管路材接続溝Ｐ１との間で接
続リング体１０を挿入させるもので、本体接続溝２と管
路材接続溝Ｐ１とが合致したときに形成される矩形空洞
内に接続リング体１０を挿入させるものとなっている。
図示にあっての本体接続溝２は、管路材Ｐ夫々に例えば
３本の接続リング体１０で囲繞するものとさせるのに対
応して３本にして形成してあるも、接続時の一層の安定
性、強固性等を確保する上で４本以上にして形成される
こともあり、あるいは必要とする接続安定性が得られる
ならば１本あるいは２本とされることもある。On the inner peripheral side surface of the joint main body 1, a main body connection groove 2 is suitable at a position corresponding to a pipe material connection groove P1 on the pipe material P formed in advance at an end of the pipe material P. It is formed of several pieces. The main body connection groove 2 has, for example, a rectangular shape in cross section, and allows the connection ring body 10 to be inserted between the pipe material connection grooves P1 opposed to each other. The main body connection groove 2 and the pipe material connection groove P1 The connection ring body 10 is inserted into a rectangular cavity formed when the above conditions are met.
Although the main body connection groove 2 shown in the figure is formed as three in correspondence with each of the pipe members P to be surrounded by, for example, three connection ring bodies 10, it is formed in three layers. It may be formed with four or more wires in order to ensure the stability and robustness of the wire, or may be formed with one or two wires if required connection stability is obtained.
【００１３】またこの本体接続溝２夫々には、接続リン
グ体１０をジョイント本体１の外部から挿入させるため
の挿入口３が開口形成されている。この挿入口３は、管
路材Ｐないしジョイント本体１自体の法線方向に沿って
本体接続溝２に連続してジョイント本体１の外周面に開
口形成してあり、図３、図４に示すように本体接続溝２
自体の幅員に比しやや広幅に形成することで接続リング
体１０におけるその端部からの順次の挿入作業の円滑性
が得られるように配慮してある。図示のように３本の本
体接続溝２が並列形成されているとき、それらの挿入口
３位置はジョイント本体１の外周に沿って僅かにずらし
て、例えば４５度間隔でずらして配置してあり、管路材
Ｐの接続方向に沿っての外力に対する耐荷重性が発揮さ
れるようにする。なお挿入口３の開始縁は法線方向に沿
うことで本体接続溝２に対して傾斜させることで接続リ
ング体１０の挿入作業が容易なるようにしてあり、終了
縁は本体接続溝２に対してほぼ直交させることで挿入口
３自体の開口位置を容易に視認できるようにしてある。Each of the main body connection grooves 2 is formed with an insertion opening 3 through which the connection ring body 10 is inserted from outside the joint main body 1. The insertion opening 3 is formed in the outer peripheral surface of the joint main body 1 so as to be continuous with the main body connection groove 2 along the normal direction of the pipe material P or the joint main body 1 itself, and is shown in FIGS. So that the body connection groove 2
The width of the connection ring body 10 is made slightly wider than the width of the connection ring body, so that the smoothness of the sequential insertion work from the end of the connection ring body 10 is obtained. As shown, when the three main body connection grooves 2 are formed in parallel, the positions of the insertion ports 3 are slightly shifted along the outer periphery of the joint main body 1, for example, at 45 ° intervals. In addition, load resistance to external force along the connection direction of the pipe material P is exhibited. The starting edge of the insertion opening 3 is inclined along the normal direction with respect to the main body connection groove 2 so that the operation of inserting the connection ring body 10 is facilitated. The opening position of the insertion slot 3 itself can be easily visually recognized by making them substantially perpendicular to each other.
【００１４】なお図中符号４は、ジョイント本体１の内
周側面に形成した防水シーリングのためのＯリング等を
挿入するシーリング溝である。Reference numeral 4 in the figure denotes a sealing groove formed on the inner peripheral side surface of the joint main body 1 for inserting an O-ring or the like for waterproof sealing.
【００１５】内部筒体５は、管路材Ｐの内径にほぼ対応
した外径を有する筒状に形成されており、端部内縁は管
路材Ｐ内に挿通させるケーブル類Ｃのために面取り処理
が施されている。この内部筒体５においての管路材Ｐの
開口端側に位置する端縁には、管路材Ｐの開口端縁面に
当接するストッパ片６を例えば対状に配置固定してあ
る。The inner tubular body 5 is formed in a tubular shape having an outer diameter substantially corresponding to the inner diameter of the pipe material P, and the inner edge at the end is chamfered for cables C to be inserted into the pipe material P. Processing has been applied. A stopper piece 6 that is in contact with the opening end surface of the pipe material P is arranged and fixed, for example, in a pair at the edge of the inner cylindrical body 5 located on the opening end side of the pipe material P.
【００１６】一方、接続リング体１０は管路材Ｐの外周
面における曲率とほぼ同一の曲率で湾曲されていて、一
部が切除されることで不連続なものとなっているほぼ円
形のリング状に形成されていることで、管路材Ｐの外周
をほぼ囲繞するようになっている。この接続リング体１
０の断面形状は図２に示すように、前記管路材接続溝Ｐ
１及び本体接続溝２両者が合致対向することで形成する
１つの空洞の断面形状にほぼ対応するようになってお
り、管路材接続溝Ｐ１、本体接続溝２両者に跨る例えば
矩形状を呈する。すなわち接続リング体１０自体は管路
材接続溝Ｐ１内に嵌め入れられることで管路材Ｐ自体を
囲繞し、管路材接続溝Ｐ１の周長に比し僅かに短く形成
されることで一部が切除されたいわゆる円形カットリン
グ状となっており、直線状に強制的に拡げられても円形
リングとなる曲がり癖によって原形に復原するようにな
っている。また少なくともいずれか一方の端部は挿入口
３への挿入容易性等を図るために例えば錐体面状に削成
されている。On the other hand, the connection ring body 10 is curved with substantially the same curvature as the curvature on the outer peripheral surface of the pipe material P, and is cut into a discontinuous shape by cutting off a part thereof. By being formed in a shape, the outer periphery of the pipe material P is substantially surrounded. This connection ring 1
0, as shown in FIG.
1 and the main body connection groove 2 substantially coincide with each other so as to substantially correspond to the cross-sectional shape of one cavity formed by opposing, and exhibit, for example, a rectangular shape that straddles both the pipeline connection groove P1 and the main body connection groove 2. . That is, the connection ring body 10 itself is fitted into the conduit connection groove P1 to surround the conduit P itself, and is formed to be slightly shorter than the circumferential length of the conduit connection groove P1. It has a so-called circular cut ring shape in which a part is cut off, and even if it is forcibly expanded in a straight line, it returns to its original shape due to the bending habit of forming a circular ring. At least one of the ends is cut into, for example, a cone surface in order to facilitate insertion into the insertion opening 3 and the like.
【００１７】また接続リング体１０自体は図示のよう
に、管路材接続溝Ｐ１が一方の管路材Ｐに通常は３本で
形成されていることに対応して管路材Ｐ相互を接続固定
する際には６本で１組として使用され、例えばＳＵＳ等
の鋳鉄素材等の金属にて形成される。As shown in the drawing, the connecting ring body 10 connects the pipe members P in correspondence with the fact that the pipe member connecting groove P1 is usually formed of three in one pipe member P. At the time of fixing, six pieces are used as one set and are formed of a metal such as a cast iron material such as SUS.
【００１８】次にこれの使用の一例を説明すると、図５
に示すように管路材Ｐを引き込み埋設すべき埋設作業現
場には、工場にて製造され、所定の単位長さ毎に切断さ
れた管路材Ｐがトラックの如き輸送車によって搬入さ
れ、ストックヤードに保管されるもので、このとき管路
材Ｐの端部外周面には例えば３本の管路材接続溝Ｐ１が
予め工場出荷時にあるいは埋設作業現場で削成加工され
たものとしておく。そして埋設させるべく前方配置の管
路材Ｐの前端は引き込み埋設位置である例えばハンドホ
ールＨの側壁開口に関連配置したバックリーマＲに連結
しておき、予め掘削されたパイロット孔に沿って後退移
動するバックリーマＲによって管路材Ｐを引き込むので
ある。Next, an example of the use of this will be described.
As shown in the figure, a pipe material P manufactured at a factory and cut at a predetermined unit length is carried in by a transport vehicle such as a truck at a burying work site where the pipe material P is to be drawn and buried. At this time, for example, three pipe connection grooves P1 are formed on the outer peripheral surface of the end of the pipe P at the time of shipment from the factory or at the burying work site. The front end of the pipe material P arranged forward is connected to a back reamer R disposed in relation to a side wall opening of the hand hole H, which is a retracted embedding position, so as to be buried, and retreats along a pilot hole previously excavated. The pipe material P is drawn in by the back reamer R.
【００１９】このときそのバックリーマＲによる連続し
た引き込みに伴い送り込まれる管路材Ｐの移動に対応し
て移動される作業台車Ｄ上で、後端側の管路材Ｐに順次
に本発明接続装置によって管路材Ｐを接続固定するので
ある。その接続固定は、埋設される前方側の管路材Ｐの
後端と、これに接続させるべき管路材Ｐの前端とを突き
合わせ状にして行われる。先ず管路材Ｐ両者の端部内に
内部筒体５を強制的にでも夫々挿入すると共に、シーリ
ング溝４にＯリング等が挿入されたジョイント本体１に
対して、図１に示すように接続すべき前方側の管路材Ｐ
の後端、後方側の管路材Ｐの前端夫々が差し込まれ、こ
の差し込み作業に際しては、挿入口３から覗きながらも
管路材接続溝Ｐ１位置に本体接続溝２を合致させる位置
に調整、停止する。次いで管路材接続溝Ｐ１、本体接続
溝２両者が合致していることで形成される空洞内に両者
に跨るように挿入口３夫々から接続リング体１０夫々
を、その曲がり癖を利用して順次に挿入するのである
（図３、図２参照）。こうしたジョイント本体１内への
前後の管路材Ｐの差し込み、位置合わせ、接続リング体
１０の挿入等の作業は、特別な工具を使用せずとも作業
員の手作業で充分に実施できるのであり、場合によって
はジョイント本体１の外周にやや強制的にでも拡開した
接続リング体１０を予め装着しておいて行われる。At this time, the connection of the present invention is sequentially made to the pipe material P on the rear end side on the work carriage D which is moved in accordance with the movement of the pipe material P sent in with the continuous retraction by the back reamer R. The pipe material P is connected and fixed by the device. The connection is fixed by abutting the rear end of the pipe material P on the front side to be buried and the front end of the pipe material P to be connected thereto. First, the internal cylinders 5 are forcibly inserted into both ends of the pipe material P, respectively, and are connected to the joint body 1 in which the O-ring or the like is inserted into the sealing groove 4 as shown in FIG. Pipe material P on the front side to be
The front end of the pipe member P on the rear end and the front end of the pipe member P on the rear side are inserted. During this insertion work, the main body connection groove 2 is adjusted to match the pipe material connection groove P1 position while looking through the insertion port 3, Stop. Next, the connecting ring bodies 10 are respectively inserted from the insertion openings 3 so as to straddle both of them in the cavity formed by the conduit material connecting groove P1 and the main body connecting groove 2 being aligned with each other by utilizing the bending habit. They are inserted sequentially (see FIGS. 3 and 2). Such operations such as insertion and positioning of the front and rear pipe members P into the joint body 1, alignment, insertion of the connection ring body 10, etc. can be sufficiently performed manually by an operator without using special tools. In some cases, the connection ring body 10 that is expanded even slightly forcibly is mounted on the outer periphery of the joint body 1 in advance.
【００２０】また管路材Ｐ自体は通常ではその長さが約
８０００乃至１２０００ｍｍ程度としてあるから、作業
台車Ｄの前後方で適当間隔毎に前後に移動自在にして配
した複数の補助作業台車Ｓ上に載せておき、作業台車Ｄ
上での接続作業は前後の管路材Ｐ相互の端面が位置ずれ
を生じることなく相対するようにすると共に、埋設する
際の引き込み速度に対して距離的、時間的に充分な余裕
が得られるようにするとよいものである。さらに必要に
応じて、予め複数の管路材Ｐ相互を接続して所定長さの
ものとして構成しておき、それを作業台車Ｄ上で順次に
接続することも可能である。Since the length of the pipe material P itself is usually about 8000 to 12000 mm, a plurality of auxiliary work vehicles S arranged so as to be movable back and forth at appropriate intervals in front of and behind the work vehicle D are provided. Put it on the top, work cart D
In the above connection operation, the end faces of the front and rear pipe members P are opposed to each other without causing a positional shift, and a sufficient margin in terms of distance and time is obtained with respect to the drawing speed at the time of embedding. It is good to do so. Further, if necessary, it is also possible to connect a plurality of pipe members P in advance to each other so as to have a predetermined length, and to connect them sequentially on the work carriage D.
【００２１】[0021]
【発明の効果】本発明は以上のように構成されており、
これがために、例えば通信ケーブル、電力線等の各種の
配線類を地中に埋設配線するときのポリエチレン樹脂製
管の如き管路材Ｐ相互を、狭隘な埋設作業現場であって
も迅速、確実に接続固定でき、しかもその接続固定には
大掛かりな設備、装置、特別な工具等を要せず作業員の
手作業によっても簡単に行うことができるのである。そ
のため例えば非開削工法によっての管路材Ｐの埋設工事
の一層の利便性を図れるばかりでなく、単位材としての
管路材Ｐ相互を強固に接続固定して地中への引き込みに
伴い生じ得る各種の抵抗等によっても離反、分離させる
ことなく、安定的な一体化された長尺状の管路を埋設構
成できるものである。The present invention is configured as described above.
For this reason, for example, when various wirings such as communication cables and power lines are buried underground, pipe materials P such as polyethylene resin pipes can be quickly and reliably connected even in a narrow buried work site. The connection can be fixed, and the connection can be easily performed manually by an operator without requiring large-scale equipment, devices, special tools, and the like. For this reason, for example, not only the convenience of the burying work of the pipe material P by the non-cutting method can be achieved, but also the pipe materials P as the unit materials are firmly connected and fixed to each other and may be caused by the drawing into the ground. A stable integrated long pipe can be buried and configured without separating or separating by various resistances or the like.
【００２２】すなわちこれは本発明において、相互に接
続すべき管路材Ｐの端部夫々に跨って管路材Ｐ夫々の外
側に配装されるジョイント本体１と、管路材Ｐの端部夫
々の内側に嵌め入れられる内部筒体５と、管路材Ｐの外
周面、ジョイント本体１の内周面夫々の接続溝Ｐ１，２
に跨ってジョイント本体１外から挿入配置される接続リ
ング体１０とを備えたからであり、これによって、作業
現場での特別な工具類を不要とした作業員の手作業によ
る接続固定、長尺に形成した管路材Ｐの地中への連続し
た埋設引き込みに対処可能な短時間での迅速、確実な接
続固定、埋設引き込み力に充分に耐え得る強固な接続等
を可能にしているのである。しかも管路材Ｐの端部にお
ける管路材接続溝Ｐ１は、工場出荷時でも埋設作業現場
でもいずれででも簡単に形成加工でき、大掛かりな設備
等を必要としないことでも安価に実施できるものであ
る。That is, according to the present invention, the joint body 1 is disposed outside each of the pipe members P so as to straddle each of the ends of the pipe members P to be connected to each other. Connection grooves P1 and P2 of the inner cylindrical body 5 fitted into the inside of each, the outer circumferential surface of the pipe material P, and the inner circumferential surface of the joint body 1, respectively.
And a connection ring body 10 that is inserted from outside of the joint body 1 so as to extend over the joint body. This enables quick and reliable connection and fixation in a short time capable of coping with the continuous embedding of the formed pipe material P into the ground, a strong connection capable of sufficiently withstanding the embedding retraction force, and the like. Moreover, the pipe material connection groove P1 at the end of the pipe material P can be easily formed and processed at any time at the time of shipment from the factory or at the buried work site, and can be implemented at a low cost even without requiring large-scale equipment. is there.
【００２３】またジョイント本体１の内周側面には、管
路材Ｐの端部に予め形成される管路材Ｐ側の管路材接続
溝Ｐ１に対応する位置で本体接続溝２を形成してあるか
ら、互いに合致させた接続溝Ｐ１，２両者間に跨って挿
入配置される接続リング体１０によってジョイント本体
１と管路材Ｐとは互いに内外で嵌め合わせられた内外周
側面間で確実に位置合わせして固定することができる。On the inner peripheral side surface of the joint body 1, a main body connection groove 2 is formed at a position corresponding to a pipe material connection groove P1 on the pipe material P side formed at an end of the pipe material P in advance. Therefore, the joint main body 1 and the pipe material P are securely connected between the inner and outer peripheral side surfaces which are fitted inside and outside of each other by the connection ring body 10 inserted and arranged between the connection grooves P1 and P2, which are aligned with each other. Can be positioned and fixed.
【００２４】内部筒体５は管路材Ｐの内部に嵌め入れら
れる筒状に形成され、管路材Ｐの外周側面にはジョイン
ト本体１が嵌め合わせられるから、突き合わせ状で相互
に接続される管路材Ｐ夫々を直線的に保持して接続固定
状態を安定化させるものとなり、管路材Ｐ内で収納保護
する各種のケーブル類Ｃに対する挿通配線作業の円滑化
にも役立つのである。The inner tubular body 5 is formed in a tubular shape to be fitted into the inside of the pipe material P, and the joint body 1 is fitted on the outer peripheral side of the pipe material P, so that they are connected to each other in a butt shape. This stabilizes the connection and fixed state by holding each of the pipe members P in a straight line, and also facilitates the work of inserting and wiring various cables C to be stored and protected in the pipe member P.
【００２５】接続リング体１０は、管路材Ｐの外周面に
おける曲率とほぼ同一の曲率で湾曲されていて、一部が
不連続なほぼ円形のリング状に形成してあるから、接続
溝Ｐ１，２内への挿入口３を経ての挿入作業に際し、接
続リング体１０に付与されている曲がり癖によって作業
員の手作業で強制的に押し込むことによっても円滑に行
うことができる。しかも接続リング体１０は、位置が合
わされたジョイント本体１内周側面の本体接続溝２、管
路材Ｐ外周側面の管路材接続溝Ｐ１両者に跨って挿入さ
れることで、管路材Ｐ外周側面ないしジョイント本体１
内周側面に沿って円形に配置されるから、管路材Ｐの筒
方向に沿う外力その他の付与によっても挿入位置から外
れることはなく、強制的に地中に引き込まれる管路材Ｐ
相互間の接続固定を確実に維持させることができる。The connecting ring body 10 is curved with substantially the same curvature as the curvature on the outer peripheral surface of the pipe material P, and is partially formed in a discontinuous substantially circular ring shape. , 2 can be smoothly carried out by forcibly pushing in the connection ring body 10 manually by an operator due to the bending habit given to the connection ring body 10. In addition, the connecting ring body 10 is inserted across both the main body connecting groove 2 on the inner peripheral side surface of the joint body 1 and the conduit material connecting groove P1 on the outer peripheral side surface of the conduit member P. Outer side surface or joint body 1
Since it is arranged circularly along the inner peripheral side surface, it does not come off from the insertion position even when an external force or the like is applied along the pipe direction of the pipe material P, and the pipe material P is forcibly pulled into the ground.
It is possible to reliably maintain the connection between the two.
【００２６】ジョイント本体１外周面には、管路材Ｐな
いしジョイント本体１自体の法線方向に沿って本体接続
溝２に連続している挿入口３を開口形成してあるから、
接続リング体１０の接続溝Ｐ１，２内への挿入作業は接
続リング体１０の端部から順次に強制的にでも押し入れ
るだけで行うことができる。しかも接続溝Ｐ１，２を複
数で形成したときの夫々の挿入口３はジョイント本体１
の外周に沿ってずらした位置としてあるから、接続リン
グ体１０における一部を切除した切断端は、接続溝Ｐ
１，２内への挿入後ではジョイント本体１の周方向でず
れたものとなるから、管路材Ｐの筒方向に沿う外力に対
しての耐衝撃性、耐抜脱性等を一層向上させることがで
きる。The outer peripheral surface of the joint main body 1 is formed with an insertion opening 3 which is continuous with the main body connecting groove 2 along the normal direction of the pipe material P or the joint main body 1 itself.
The operation of inserting the connection ring body 10 into the connection grooves P1 and P2 can be performed simply by forcibly pushing the connection ring body 10 sequentially from the end. In addition, when a plurality of connection grooves P1 and P2 are formed, each of the insertion ports 3 is connected to the joint body 1
Are cut along the outer periphery of the connection ring body 10 so that the cut ends of the connection ring body 10 that are partially cut
After being inserted into the insides 1 and 2, the joint body 1 is shifted in the circumferential direction, so that the impact resistance against the external force along the cylinder direction of the pipe material P, the pull-out resistance, and the like are further improved. be able to.
【００２７】なお図示を省略したが、突き合わせ状にし
た相互に接続すべき管路材Ｐ夫々の端部内側に嵌め込み
挿入した内側筒部夫々の端部に、外方に張り出し状にな
っている接続フランジを形成し、この接続フランジを突
き合わせ接合すると共にこの接合した接続フランジに断
面でコ字形の円形リング状の接続帯を跨がせ、次いで接
続帯の外側から管路材Ｐ相互の端部に跨がせて筒状のジ
ョイント体を装着することで、管路材Ｐ相互を接続固定
することもできる。また同様に図示を省略したが、突き
合わせ状にした相互に接続すべき管路材Ｐ夫々の端部内
側に嵌め込み挿入した内側筒部夫々の端部を突き合わせ
状に対峙当接させ、いずれか一方の内側筒部の端部に係
合している接続筒部をいずれか他方の内側筒部の端部に
ネジ止めすると共に、管路材Ｐ端縁面に接合する接合縁
を内側に張り出し形成した筒状の固定筒体夫々を管路材
Ｐ夫々の端部に装着することで、管路材Ｐ相互を接続固
定することもできる。Although not shown in the drawings, the end portions of the inner cylindrical portions which are fitted and inserted inside the ends of the pipe members P to be connected to each other are formed to project outward. A connecting flange is formed, the connecting flanges are butt-joined, and the joined connecting flanges are straddled with a circular ring-shaped connecting band having a U-shape in cross section. The pipe members P can be connected and fixed to each other by mounting a tubular joint body over the. Although not shown in the drawing, the ends of the inner cylindrical portions inserted and fitted inside the ends of the pipe materials P to be connected to each other, which are formed in a butt shape, are brought into abutting shape so as to face each other. The connecting cylinder engaged with the end of the inner cylinder is screwed to the end of one of the other inner cylinders, and the joining edge for joining to the end face of the pipe material P is formed to extend inward. By attaching each of the fixed tubular bodies thus formed to the end of each of the pipe members P, the pipe members P can be connected and fixed to each other.
【図１】本発明の一実施の形態を示す接続使用時におけ
る部材の配置を示す分解斜視図である。FIG. 1 is an exploded perspective view showing an arrangement of members during connection use according to an embodiment of the present invention.
【図２】同じく接続時の接続方向に沿う断面図である。FIG. 2 is a cross-sectional view along the connection direction during connection.
【図３】同じく径方向に沿う断面図である。FIG. 3 is a cross-sectional view along the same radial direction.
【図４】同じくジョイント具本体の接続方向に沿う断面
図である。FIG. 4 is a cross-sectional view along the connection direction of the joint tool body.
【図５】同じく地中埋設用管路材の埋設施工状況を説明
する作業概略側面図であり、接続作業状態を一部拡大表
示してある。FIG. 5 is a schematic work side view for explaining a state of burying the underground pipework material, showing a partially enlarged connection work state.
Ｃ…ケーブル類 Ｄ…作業台車 Ｈ…ハンドホール Ｐ…管路材 Ｐ１…管路材接
続溝 Ｒ…バックリーマ Ｓ…補助作業台
車 １…ジョイント本体 ２…本体接続溝 ３…挿入口 ４…シーリング
溝 ５…内部筒体 ６…ストッパ片 １０…接続リング体C ... Cables D ... Working trolley H ... Hand hole P ... Pipe line material P1 ... Pipe line connection groove R ... Back reamer S ... Auxiliary work vehicle 1 ... Joint body 2 ... Body connection groove 3 ... Insertion slot 4 ... Sealing groove 5 internal cylinder 6 stopper piece 10 connection ring
フロントページの続き Ｆターム(参考） 2D054 AC18 AD28 3H015 KA00 3J106 AA06 AB01 BA01 BB01 BC04 BD01 BE22 BE23 CA20 EA03 EB05 EC01 EC08 ED04 ED14 ED24 ED34 ED41 EE01 EF04Continued on front page F-term (reference) 2D054 AC18 AD28 3H015 KA00 3J106 AA06 AB01 BA01 BB01 BC04 BD01 BE22 BE23 CA20 EA03 EB05 EC01 EC08 ED04 ED14 ED24 ED34 ED41 EE01 EF04
Claims (5)
って管路材夫々の外側に嵌め合わせ配装される筒状のジ
ョイント本体と、管路材の端部夫々の内側に嵌め入れら
れる内部筒体と、管路材の外周面、ジョイント本体の内
周面夫々に対向して形成された接続溝夫々に跨ってジョ
イント本体外から挿入される接続リング体とを備えてい
ることを特徴とする地中埋設用管路材の接続装置。1. A tubular joint body which is fitted over and disposed on the outside of each of the pipe members so as to straddle each of the ends of the pipe members to be connected to each other. An internal cylinder body to be fitted, and a connection ring body inserted from the outside of the joint main body over each of the connection grooves formed facing the outer peripheral surface of the pipe material and the inner peripheral surface of the joint main body, respectively. A connection device for a pipe material for burying underground.
の端部に予め形成される管路材側の管路材接続溝に対応
する位置で本体接続溝を形成すると共に、外周面に、管
路材ないしジョイント本体自体の法線方向に沿って本体
接続溝に連続している挿入口を開口形成してある請求項
１に記載の地中埋設用管路材の接続装置。2. The joint body has a main body connection groove formed on the inner peripheral side surface at a position corresponding to a conduit material connection groove on a conduit material side formed in advance at an end portion of the conduit material, and an outer peripheral surface. 2. An underground pipe connecting device according to claim 1, wherein an insertion opening is formed in said connecting hole along the normal direction of the pipe material or the joint body itself.
の本体接続溝夫々の挿入口はジョイント本体の外周に沿
ってずらした位置としてある請求項１または２に記載の
地中埋設用管路材の接続装置。3. The underground pipe according to claim 1, wherein a plurality of body connection grooves are formed, and the insertion openings of each of the body connection grooves are shifted along the outer periphery of the joint body. Road material connection device.
た外径を有する筒状に形成され、管路材の開口端縁面に
当接するストッパ片を固定してある請求項１乃至３のい
ずれかに記載の地中埋設用管路材の接続装置。4. The inner cylindrical body is formed in a cylindrical shape having an outer diameter substantially corresponding to the inner diameter of the pipe material, and a stopper piece abutting on an opening edge surface of the pipe material is fixed. 4. The connection device for an underground pipe material according to any one of claims 1 to 3.
曲率とほぼ同一の曲率で湾曲されていて、一部が切除さ
れることで不連続なものとなっているほぼ円形のリング
状に形成してある請求項１乃至４のいずれかに記載の地
中埋設用管路材の接続装置。5. The connection ring body is curved with substantially the same curvature as the curvature on the outer peripheral surface of the pipe material, and is cut into a substantially circular ring shape which is discontinuous when a part thereof is cut off. The underground pipe connecting device according to any one of claims 1 to 4, wherein the connecting device is formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001086848A JP2002286183A (en) | 2001-03-26 | 2001-03-26 | Connecting device of underground buried pipeline material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001086848A JP2002286183A (en) | 2001-03-26 | 2001-03-26 | Connecting device of underground buried pipeline material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2002286183A true JP2002286183A (en) | 2002-10-03 |
Family
ID=18942165
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001086848A Pending JP2002286183A (en) | 2001-03-26 | 2001-03-26 | Connecting device of underground buried pipeline material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2002286183A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2396676A (en) * | 2002-12-06 | 2004-06-30 | Weatherford Lamb | Wire lock expandable connection |
| GB2404956A (en) * | 2003-08-14 | 2005-02-16 | Peter Hart | A coupling arrangement having a removable locking member |
| JP2012037042A (en) * | 2010-07-16 | 2012-02-23 | Cosmo Koki Co Ltd | Pipe joint |
| JP2014173373A (en) * | 2013-03-12 | 2014-09-22 | Ohbayashi Corp | Pipe connection structure for civil engineering work |
| CN109027481A (en) * | 2018-09-18 | 2018-12-18 | 深圳市新源科技有限公司 | Ready-packaged joint |
| JP7427197B2 (en) | 2020-06-10 | 2024-02-05 | 日本製鉄株式会社 | Pipe connection structure |
-
2001
- 2001-03-26 JP JP2001086848A patent/JP2002286183A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2396676A (en) * | 2002-12-06 | 2004-06-30 | Weatherford Lamb | Wire lock expandable connection |
| GB2396676B (en) * | 2002-12-06 | 2005-11-16 | Weatherford Lamb | Wire lock expandable connection |
| US6981547B2 (en) | 2002-12-06 | 2006-01-03 | Weatherford/Lamb, Inc. | Wire lock expandable connection |
| GB2404956A (en) * | 2003-08-14 | 2005-02-16 | Peter Hart | A coupling arrangement having a removable locking member |
| JP2012037042A (en) * | 2010-07-16 | 2012-02-23 | Cosmo Koki Co Ltd | Pipe joint |
| JP2014173373A (en) * | 2013-03-12 | 2014-09-22 | Ohbayashi Corp | Pipe connection structure for civil engineering work |
| CN109027481A (en) * | 2018-09-18 | 2018-12-18 | 深圳市新源科技有限公司 | Ready-packaged joint |
| JP7427197B2 (en) | 2020-06-10 | 2024-02-05 | 日本製鉄株式会社 | Pipe connection structure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9399910B2 (en) | Inspection system and method for use in underground boring operations | |
| JPH05106765A (en) | Buried piping structure | |
| JP2002286183A (en) | Connecting device of underground buried pipeline material | |
| WO2013021166A1 (en) | T-piece preformer | |
| US4889450A (en) | Guidance and protection system for the laying of pipes | |
| JPH05106766A (en) | Buried piping structure | |
| JPH10122432A (en) | Replacing method and drawing method for underground embedded pipe | |
| JPH11324569A (en) | Pipe connection method | |
| JP3666815B2 (en) | Existing pipe cutting tool and existing pipe drawing tool | |
| KR102541496B1 (en) | Underground buried pipe non-excavation replacement method | |
| EP1020615A3 (en) | Feeding method for laying underground pipes and pipe for carrying out this method | |
| JP2011111829A (en) | Jacking method and underground conduit | |
| JP3526406B2 (en) | Protective cover and storage method for cable / hose for advanced equipment of small-diameter pipeline propulsion machine | |
| DE19858509C1 (en) | Method for trench-free forming of pressure-sealed domestic gas/water pipe connections uses robots to place whip stock, drill string with head, draw head, and milling cutter robots | |
| JP2005354790A (en) | Repair method for underground conduit | |
| JP2006300188A (en) | Structure of connection between conduit for communication and hand hole | |
| JPH09247833A (en) | Perforated concrete pipe and burying method therefor | |
| JP2003214088A (en) | Driving burying method for underground burying conduit and its driving burying device | |
| JP3179643B2 (en) | Piping equipment for small diameter pipe propulsion machines | |
| JPH0750816Y2 (en) | Positioning tool for buried pipe for communication line | |
| JPH112370A (en) | Cable laying pipe, and its connecting structure | |
| JPH08151894A (en) | Steel pipe for propulsion burial and propulsion burial construction method for steel pipe | |
| JP2985367B2 (en) | Pipeline repair equipment | |
| JPS63256303A (en) | Method of repairing pipe line | |
| JP2008274617A (en) | Non-open-cut excavation burying device |