JPS62220790A - Method of inserting main pipe and jig for inserting main pipe - Google Patents
Method of inserting main pipe and jig for inserting main pipeInfo
- Publication number
- JPS62220790A JPS62220790A JP6398786A JP6398786A JPS62220790A JP S62220790 A JPS62220790 A JP S62220790A JP 6398786 A JP6398786 A JP 6398786A JP 6398786 A JP6398786 A JP 6398786A JP S62220790 A JPS62220790 A JP S62220790A
- Authority
- JP
- Japan
- Prior art keywords
- main pipe
- jig
- pipe
- tube
- sheath
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims description 23
- 238000001514 detection method Methods 0.000 claims description 23
- 238000003780 insertion Methods 0.000 claims description 19
- 230000037431 insertion Effects 0.000 claims description 19
- 238000005452 bending Methods 0.000 claims description 2
- 238000012968 tube insertion method Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 7
- 238000010276 construction Methods 0.000 description 4
- 238000012966 insertion method Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 206010011224 Cough Diseases 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002991 molded plastic Substances 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 210000002784 stomach Anatomy 0.000 description 1
Landscapes
- Excavating Of Shafts Or Tunnels (AREA)
- Hand Tools For Fitting Together And Separating, Or Other Hand Tools (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は推進工法によって敷設された鞘管内に本管を
挿入する際に、その挿入をスムーズに行なうための工法
及び治具に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a construction method and jig for smoothly inserting a main pipe into a sheath pipe laid by a propulsion method.
ガス管や水道管等の管を埋設する場合、近年交通事情等
の理由により非開削で工事を行なう推進工法が広〈実施
されている。When burying pipes such as gas pipes and water pipes, in recent years, due to traffic conditions and other reasons, a trenchless construction method has been widely used.
この推進工法は地中に発進立坑及び到達立坑を掘り、該
発進立坑から到達立坑へパイロット孔を形成してそこｌ
こ鞘管を順次継ぎ足しながら挿入し、その後鞘管内に更
に本管を同様に継ぎ足しつつ引込むことにより完了する
。This propulsion method involves digging a starting shaft and a reaching shaft underground, and forming a pilot hole from the starting shaft to the reaching shaft.
The process is completed by inserting the sheath tubes one after another, and then pulling the main tube into the sheath tube while adding them in the same way.
以上の工法では、これまで１スパンが数十ｍと短く、そ
のため本管の挿入は容易であった。ところが本管がガス
管として使用される場合は、ガス漏洩防止の目的から継
ぎ目をできるだけ少なくするため、１スパンを数百ｍと
し、且つその中に挿入される本管の長さも長くすること
が多くなり、本管を挿入する際途中で撓んだり、ねじれ
たりして鞘管内面に接触しその挿入が困難となることが
ある。In the above construction methods, each span has been short, several tens of meters, so it has been easy to insert the main pipe. However, when the main pipe is used as a gas pipe, in order to minimize the number of joints in order to prevent gas leaks, one span is several hundred meters long, and the length of the main pipe inserted into it is also long. When the main tube is inserted, it may bend or twist and come into contact with the inner surface of the sheath tube, making insertion difficult.
又鞘管径が小さく：（８０１１以下）なった場合は、た
とえ撓むことがなくてもその挿入はより一層むずかしく
なる。Furthermore, if the sheath tube diameter is small (8011 or less), insertion becomes even more difficult even if it does not bend.
又、従来のように１スパンが比較的短い場合に、ガス検
知口を設けるには推進工法を行なうにあたり設置した各
立坑を利用すれば良いし、更に鞘管とそこに挿入された
本管との間の間隙をセメント等で充填する場合も距離が
短い場合は各立坑を使用してそこから鞘管と本管との間
隙に一括充填することにより十分施工可能である。しか
し、前述のように１スパンが長くなった場合は、立坑間
を利用したガス検知口だけでは、その機能を十分発揮す
ることができず、そのため各立坑間の途中にも設ける必
要があるが、推進工法が交通事情等から開削が容易でな
い時に実施されることからすれば、立坑のほかに必要な
箇所へ地表から穴を掘ることはほとんど不可能である・
又間隙の充填についても立坑間の距離が長いと一括充填
が困難をこなってしまう。In addition, when one span is relatively short as in the past, in order to install a gas detection port, it is sufficient to use each vertical shaft installed during the propulsion method, and furthermore, it is necessary to use the shafts installed in the propulsion method, and also to connect the sheath pipe and the main pipe inserted therein. When filling the gap between the sheath pipe and the main pipe with cement, etc., if the distance is short, it is sufficient to use each shaft and fill the gap between the sheath pipe and the main pipe all at once. However, when one span becomes longer as mentioned above, gas detection ports that are located between the shafts cannot fully demonstrate their function, so it is necessary to provide them also in the middle between each shaft. Considering that the propulsion method is carried out when excavation is not easy due to traffic conditions, it is almost impossible to dig holes from the ground surface in the necessary places other than the vertical shaft.
Also, when filling gaps, if the distance between shafts is long, it becomes difficult to fill them all at once.
本発明は上記のような問題に鑑み創案されたもので、長
距離推進工法で敷設した鞘管内に本管を挿入するにあた
り、その挿入をスムーズに行なうことができる本管挿入
方法及び挿入用治具を提供し、又該治具についてはガス
検知及び／又は間隙充填を目的とした装置の付設が可能
なものも併せて提供せんとするものである。The present invention has been devised in view of the above-mentioned problems, and provides a main pipe insertion method and insertion treatment that allow smooth insertion of the main pipe into a sheath pipe laid by the long-distance propulsion method. The present invention also provides a jig that can be equipped with a device for gas detection and/or gap filling.
そのため、本発明は、第１図に示すように推進工法によ
って敷設した鞘管（１）内へ本管（２）を挿入するにあ
たり、該本管（２）を、その長さ方向での撓みをなくし
て鞘管（１）管軸方向に平行に挿入するものである。こ
のような挿入方法によって挿入される本管（２）はその
端部及び局面が鞘管（１）内周面に接触しないため、そ
の挿入をスムーズに行なうことができる。Therefore, as shown in FIG. 1, when inserting the main pipe (2) into the sheath pipe (1) laid by the propulsion method, the main pipe (2) is bent in its length direction. The sheath tube (1) is inserted parallel to the tube axis direction. The ends and curved surfaces of the main tube (2) inserted by such an insertion method do not come into contact with the inner circumferential surface of the sheath tube (1), so that the insertion can be performed smoothly.
又、第２発明としては、上記挿入方法の実施の際使用さ
れる治具を提供するものであって、第２図に示すように
、本管（２）の周りに取付けられる治具本体（３）と、
該治具本体（３）の周り番こ設けられた摺接部（４）と
を有している。In addition, a second invention provides a jig used when carrying out the above-mentioned insertion method, and as shown in FIG. 2, the jig main body ( 3) and
The jig body (3) has a sliding contact portion (4) provided around the circumference.
そのうち、治具本体（３）は分割可能な構成とされ、本
管（２）の周りに取付けられる際、簡単に取付けができ
るようにしている。Among them, the jig main body (3) is configured to be separable, so that it can be easily attached around the main pipe (2).
又摺接部（４）は本管（２）が鞘管（１）内に挿入され
る時に同一平面状の複数点で鞘管（１）内面番こ摺接し
、それによって治具本体（３）の取付けられた本管（２
）を鞘管（１）内で非接触状態に保つものである。In addition, when the main pipe (2) is inserted into the sheath pipe (1), the sliding contact portion (4) makes sliding contact with the inner surface of the sheath pipe (1) at multiple points on the same plane, thereby causing the jig main body (3 ) installed mains (2
) is kept in a non-contact state within the sheath tube (1).
以上の本管挿入用治具は、第一発明法の実施にあたり、
次のようにして使用される・即ち、該本管挿入用治具の
治具本体（３）を第３図番こ示すように前記本管（２）
の周りに管軸長手方向に各間隔を開けて取付けながら、
該本管（２）を鞘管（１）内憂こ挿入する。その際、治
具の摺接部（４）は同一平面状の複数点で鞘管（１）内
面に摺接し、本管（２）の端部及び局面を鞘管（１）内
面に非接触状態に保持するため、本管（２）の挿入をス
ムーズに行なうことができる。そして順次本管（２）を
継ぎ足し、且つ上記治具の取付けを行ないながら、挿入
していく。The above-mentioned main pipe insertion jig is used for implementing the first invention method.
The jig body (3) of the main pipe insertion jig is inserted into the main pipe (2) as shown in Figure 3.
While installing at intervals in the longitudinal direction of the tube axis,
Insert the main tube (2) into the sheath tube (1). At this time, the sliding contact part (4) of the jig is in sliding contact with the inner surface of the sheath tube (1) at multiple points on the same plane, and the ends and curved surfaces of the main tube (2) are not in contact with the inner surface of the sheath tube (1). This allows the main pipe (2) to be inserted smoothly. Then, the main pipe (2) is sequentially added and inserted while attaching the above-mentioned jig.
以下本発明の具体的実施例を図面ｌこ基づいて説明する
。Hereinafter, specific embodiments of the present invention will be described with reference to the drawings.
第４図（ａ） （ｂ）は第２発明の一実施例に係る治具
をガス管たる本管（２）の周りに取り付は鞘管（１）内
に挿入した時の正断面図及び側断面図を示している。Figures 4(a) and 4(b) are front sectional views when the jig according to an embodiment of the second invention is installed around the main pipe (2), which is a gas pipe, and inserted into the sheath pipe (1). and a side sectional view.
ここで本管挿入用治具は、円環形状に成型された薄鋼板
からなる治具本体（至）と、該治具本体（至）の周りに
６個所に分けて設けられた口−ラ式の摺接部（４０）と
から構成される。Here, the main pipe insertion jig consists of a jig body (end) made of a thin steel plate molded into an annular shape, and openings provided at six locations around the jig body (end). It consists of a sliding contact part (40) of the type.
この治具本体−は円環状のものを３分割片（３０ａ）
（３０ｂ） （３０ｅ）に分割して構成され、その分割
部分にはフランジ（３１）（３１）が設けられていてボ
ルト・ナツト等の締具（３２） （３２） ｌこより接
合可能な状態になっている。This jig body is an annular piece divided into three parts (30a)
(30b) (30e), and the divided parts are provided with flanges (31) (31) so that fasteners such as bolts and nuts (32) (32) l can be joined together. It has become.
又摺接部（４０）は、治具本体（（１）局面に立設され
た各軸受け（４１） （４１）と、その間に回転可能に
軸支された鉄製のローラ（４２）から構成され、これら
は挿入中の本管（２）のねじれ、撓みに対処するため治
具本体（７）の３分割片（３０ａＸ３０ｂχ３０Ｃ）に
各２つずつ同一平面状に計６つ設けられている。そして
本管（２）挿入時に各ローラ（４２）は鞘管（１）内面
を摺接し、挿入時の接触抵抗を減少せしめている。The sliding contact portion (40) is composed of bearings (41) (41) erected on the jig body ((1)) and an iron roller (42) rotatably supported between them. In order to cope with twisting and bending of the main pipe (2) during insertion, a total of six of these are provided on the same plane, two each on the three divided pieces (30aX30bχ30C) of the jig body (7). When the main pipe (2) is inserted, each roller (42) comes into sliding contact with the inner surface of the sheath pipe (1), reducing contact resistance during insertion.
更に、本実施例では、治具本体（至）の３分割片の夫々
中央に、第５図に示すＵ型金具（３３）で構成される取
付部が設けられていて、後述するガス検知管（６０）及
び／又は充填管（６１）を留めることができるようにし
ている。Furthermore, in this embodiment, a mounting part consisting of a U-shaped fitting (33) shown in FIG. (60) and/or the filling tube (61) can be fastened.
以上のような治具を用いて第１発明法を実施する場合は
、次のよう４「手順で行なう。When carrying out the first invention method using the above-mentioned jig, it is carried out in the following 4 steps.
まず本管（２）局面の任意の箇所にゴムシート（５０）
を巻き付け、その上に治具本体（３０）の分割片（３０
ａＸ３０ｂＸ３０ｃ）を取付けて各フランジ（３１）
（３１）を締具（３２） （３２）で接合する。そして
ガス検知管（６０）及び／又は充填管（６１）を各Ｕ型
金具（３３）により治具本体−の周りに固定する。そし
て鞘管（１）内に入れ、各摺接部（４０）のローラ（４
２）をその内面に摺接させながら、第６図に示すように
鞘管（１）内の本管（２）出側からスイベルジヨイント
（７０）を介してワイヤ（７１）の連結された本管（２
）をウィンチ（７２）でけん引するか、本管（２）入側
の立坑（１（１０）内に設けられた推進ジヤツキ（７３
）にて押込むかして挿入する―その途中２〜４ｍ程度の
間隔を開けて上記のような要領でゴムシー） （５０）
及び治具を取り付けると共に、上記Ｕ型金具（３３）の
円周上の取付は位置を各治具本体−どおしで合わせてお
き、前述のガス検知管（６０）及び／又は充填管（６１
）を次の治具本体（至）にＵ型金具（３３）で固定する
。First, place a rubber sheet (50) anywhere on the main (2) surface.
is wrapped around the jig body (30), and the split piece (30
aX30bX30c) and each flange (31)
(31) are joined with fasteners (32) (32). Then, the gas detection tube (60) and/or the filling tube (61) are fixed around the jig body using the respective U-shaped fittings (33). Then, put it into the sheath tube (1), and put it in the roller (4) of each sliding contact part (40).
2), the wire (71) is connected from the outlet side of the main pipe (2) in the sheath pipe (1) via the swivel joint (70) as shown in Fig. 6. Main (2
) with a winch (72), or with a propulsion jack (73) installed in the vertical shaft (1 (10)) at the entrance of the main pipe (2).
) and insert it - leave a gap of about 2 to 4 meters in the middle and insert the rubber seal as described above) (50)
At the same time, the U-shaped fitting (33) is installed on the circumference by aligning the positions of the respective jig bodies, and the above-mentioned gas detection tube (60) and/or filling tube ( 61
) to the next jig body (to) with a U-shaped metal fitting (33).
その抜性たな本管（２）を接続し、又上記治具を取付け
、更に、ガス検知管（６０）及び／又は充填管（６１）
を既設のこれらの管と接合し、順次鞘管（１）内に挿入
してゆ（。Connect the extractable main pipe (2), install the above-mentioned jig, and then connect the gas detection pipe (60) and/or filling pipe (61).
are connected to these existing tubes and sequentially inserted into the sheath tube (1).
ガス検知管（６０）や充填管（６１）は常ζこ取り付け
るわけではなく、ガス検知及び充填を考慮し°Ｃ配置す
る。第７図（ａ）はガス検知のために、ガス検知管（６
０）をＵ型金具（３３）で治具本体間に取付ける場合の
１例である。即ち、本管（２）の周りに両立状（１００
）（１０１）から夫々２本のガス検知管（６Ｏａ）乃至
（６０ｄ）を延出せしめているが、これらは前記本管（
２）管軸方向での各長さを変えて設置されている。そし
てこれらの管（６０ａ）乃至（６０ｄ）を検知ボックス
（６２）（６２）につなげ、ガス検知管（６０ａ）乃至
（６０ｄ）に設けられた有孔部の位置差から、ガス漏れ
があった場合の漏洩位置を確認する。このようにガス検
知管（６０ａ ）乃至（６０ｄ）を設置することで、推
進長が長い（立坑（１００） （１０１）間の距離が長
い）場合でも途中のガス検知が可能となる。The gas detection tube (60) and filling tube (61) are not always installed at this location, but are arranged at °C in consideration of gas detection and filling. Figure 7(a) shows a gas detection tube (6
0) is attached between the jig bodies using a U-shaped fitting (33). That is, around the main pipe (2) there is a compatible shape (100
) (101) respectively extend two gas detection tubes (6Oa) to (60d), which are connected to the main pipe (101).
2) They are installed with different lengths in the tube axis direction. These tubes (60a) to (60d) were then connected to the detection boxes (62) and (62), and it was discovered that there was a gas leak due to the difference in the position of the perforated parts provided in the gas detection tubes (60a) to (60d). Check the location of the leak. By installing the gas detection tubes (60a) to (60d) in this manner, gas detection on the way becomes possible even when the propulsion length is long (the distance between the shafts (100) and (101) is long).
第７図〜）は本管（２）と鞘管（１）との間隙にモルタ
ル等の充填材を充填するために、充填管（６１）をＵ型
金具（３３）で治具本体（至）に取付ける場合の一例で
ある。即ち、本管（２）の周りに両立状（１００Ｘ１０
１）から夫々３本の充填管（６１ａ）乃至（６１ｆ）を
延出せしめ、これらは前述のガス検知管（６０ａ）乃至
（６０ｄ）と同様、本管（２）管軸方向での各長さを変
えて設置されている。そして充填を行なう場合は、充填
管（６１ａ）（６１ｂ）（６１ｃ）（６１ｄ）（６１ｅ
）及び（６１ｆ）の順序でその中に充填材を圧入し、本
管（２）と鞘管（１）の間隙の充填を行なう。このよう
に充填管（６１ａ）乃至（６１ｆ）を設置し充填するこ
とで、立坑（１００） （１０１）からの一括充填が不
可能であった推進長が長い場合のその区間内への充填が
可能となる。In Fig. 7~), in order to fill the gap between the main pipe (2) and the sheath pipe (1) with a filling material such as mortar, the filling pipe (61) is connected to the jig body (toward the end) using a U-shaped fitting (33). ). That is, around the main pipe (2) there is a compatible shape (100X10
Three filling pipes (61a) to (61f) are extended from each of the main pipes (2) in the axial direction, similar to the aforementioned gas detection pipes (60a) to (60d). They are set up at different angles. When filling, fill tubes (61a) (61b) (61c) (61d) (61e
) and (61f) to fill the gap between the main pipe (2) and the sheath pipe (1). By installing and filling the filling pipes (61a) to (61f) in this way, when the propulsion length is long and it is impossible to fill all at once from the shaft (100) (101), filling in that section is possible. It becomes possible.
第８図（ａ） （ｂ）は、第２発明の他の実施例に係る
治具を同じくガス管たる本管（２）の周りに取り付は鞘
管（１１内に挿入した時の正断面図及び側断面図を示し
ている。Figures 8(a) and 8(b) show how the jig according to another embodiment of the second invention is installed around the main pipe (2), which is also a gas pipe, and the correct position when inserted into the sheath pipe (11). A sectional view and a side sectional view are shown.
本実施例の治具は治具本体（３４）及び摺接部（４（）
がプラスチックの一体整形品で構成され、且つ４つに分
割可能であって、各分割片（ａｌｉａ）乃至（３４ｄ）
の分割部分には前記実施例と同じくボルト・ナツト等の
締具（３５） （３５）で締め付けられるフランジ（３
６） （３６）が設けられている。The jig of this example includes a jig main body (34) and a sliding contact part (4 ()).
is composed of an integrally molded plastic product, and is divisible into four parts, each of which is divided into four parts (alias) to (34d).
The divided part has a flange (3) which is tightened with fasteners (35) such as bolts and nuts as in the previous embodiment.
6) (36) is provided.
又摺接部（４３）は治具本体（３４）の各分割片（３４
ａ）乃至（３４ｄ）周面から断面なべ庇状に突出した突
起部で構成され、本管（２）挿入中に該本管（２）がね
じれたり、撓んだり回転したとしても、本管（２）が鞘
管（１）内周面に接触して本管（２）の塗覆装を傷めな
いよう（ごするため、上記摺接部（４３）は、各分割片
（３４ａ）乃至（３４ｄ）に各１つずつ同一平面状に計
４つ設けられている。史に各摺接部（４３）の側断面は
、挿入をスムーズにするため、そり型になっている。尚
、本実施例では前記フランジ（３６） （３６）の上面
が摺接部（４３）の上面と同一円周上にあり、且つアー
ル状に形成されているため、同一平面状に４つの摺接部
（４３）のほか、締結された４組のフランジ（３６）（
３６）の上面も同時に鞘管（１）内面に接触することに
なる。Also, the sliding contact portion (43) is connected to each divided piece (34) of the jig main body (34).
a) to (34d) Consists of protrusions that protrude from the peripheral surface in a cross-section like a pan eave, and even if the main pipe (2) is twisted, bent, or rotated during insertion, the main pipe In order to prevent (2) from contacting the inner peripheral surface of the sheath pipe (1) and damaging the coating of the main pipe (2), the sliding contact portion (43) is connected to each of the divided pieces (34a) to (34d) are provided with a total of four on the same plane, one each on the same plane.The side cross section of each sliding contact part (43) is curved in order to make insertion smooth. In this embodiment, the upper surface of the flange (36) (36) is on the same circumference as the upper surface of the sliding contact part (43) and is formed in a rounded shape, so that the four sliding parts are arranged on the same plane. In addition to (43), there are four sets of flanges (36) (
36) also comes into contact with the inner surface of the sheath tube (1) at the same time.
更に、各摺接部（４３）には管軸方向に貫通した穴（３
７）で構成される取付部が設けられていて、この中番こ
前述したガス検知管（６０）及び／又は充填管（６１）
を差し込み固定する。Furthermore, each sliding contact portion (43) has a hole (3) penetrating in the tube axis direction.
7) is provided, and this middle number is the above-mentioned gas detection tube (60) and/or filling tube (61).
Insert and secure.
以上の治具を用いて第１発明法を実施する場合は、前夾
施例と同様な手順で行なう。When carrying out the first invention method using the above-mentioned jig, the procedure is similar to that of the previous embodiment.
以上のような本発明法及び治具によれば、たとえ鞘管内
に挿入される本管の長さが長くなったり、鞘管径が小さ
くなったとしても、本管の塗覆装を傷めたすせず該本管
の挿入をスムーズに行なうことができるという優れた効
果を有している。又本管挿入用治具の取付部に管軸方向
での各長さを変えてガス検知管及び／又は充填管を取付
は咳本管と共に鞘管内に挿入することにより、立坑間の
１スパンが数百ｍと長くなった場合でも、途中のガス検
知や長い区間の鞘管と本管の間隙充填が可能となるとい
う優れた利点も有している。According to the method and jig of the present invention as described above, even if the length of the main pipe inserted into the sheath pipe becomes longer or the diameter of the sheath pipe becomes smaller, the coating of the main pipe will not be damaged. This has the excellent effect of allowing the main tube to be inserted smoothly without slipping. In addition, the gas detection tube and/or filling tube can be attached to the mounting part of the main pipe insertion jig by changing each length in the pipe axial direction.By inserting the cough main pipe into the sheath pipe, one span between the shafts can be installed. It also has the excellent advantage of being able to detect gas in the middle and fill the gap between the sheath pipe and the main pipe over a long section, even when the pipe is several hundred meters long.
尚、本工法及び挿入用治具は本管が水道管、石油管等ガ
ス管以外でも使用可能であり、又鞘管径が大きい場合で
も、或いは推進スパンが短い場合でも利用可能なことは
言うまでもない。It goes without saying that this construction method and insertion jig can be used even when the main pipe is other than gas pipes such as water pipes and oil pipes, and even when the sheath pipe diameter is large or the propulsion span is short. stomach.
第１図は、本発明法の手順を示す説明図、第２図は第２
発明に係る本管挿入用治具を第１発明法の実施に使用し
た断面図、第３図は上記治具を使用し第１発明法を実施
した場合の説明図、第４図（ａ）は第２発明の一実施例
ζこ係る治具を使用し、鞘管内に本管を挿入した時の断
面図、同図（ｂ）はその場合の側断面図、第５図は本実
施例における治具本体に取付けられた充填管やガス検知
管の取付部の断面図、第６図は上記治具を用いて第１発
明法を実施する場合の手順を示す説明図、第７図（＆）
はガス検知管を治具本体に取付はガス検知を行なう場合
の一例を示す説明図、同図（ｂ）は充填管を治具本体に
取付は本管と鞘管との間隙に充填材の充填を行なう場合
の一例を示す説明図、第８図（ａ）は第２発明の他の実
施例に係る治具を使用し、鞘管内番こ本管を挿入した時
の断面図、同図（ｂ）はその場合の側断面図である。
図中、（１）は鞘管、（２）は本管、（３） （３０）
（ａｏａ）（３０ｂ） （３０ｃ） （３４）は治具
本体、（４Ｘ４０） （４３）は摺接部を各示す。
特詐出願人 日本鋼管株式会社
発 明 者 中 島 隆同
舛 １） 直 ２同
波多野 勲
代理人弁理士 吉 原 省 三同
同 高 橋 消量
弁謹士 吉 原 弘 子第４図
（ｂ）
第５図Figure 1 is an explanatory diagram showing the procedure of the method of the present invention, and Figure 2 is an explanatory diagram showing the procedure of the method of the present invention.
A cross-sectional view of the main pipe insertion jig according to the invention used to implement the first invention method, FIG. 3 is an explanatory diagram when the first invention method is implemented using the above jig, and FIG. 4(a) ζ is a cross-sectional view of an embodiment of the second invention when the main pipe is inserted into the sheath pipe using such a jig, FIG. 5(b) is a side cross-sectional view in that case, and FIG. FIG. 6 is an explanatory diagram showing the procedure for carrying out the first invention method using the jig, and FIG. &)
Figure (b) is an explanatory diagram showing an example of gas detection when the gas detection tube is attached to the jig body, and figure (b) is an explanatory diagram showing an example of gas detection when the gas detection tube is attached to the jig body. An explanatory diagram showing an example of filling, FIG. 8(a) is a cross-sectional view when the main tube inside the sheath tube is inserted using a jig according to another embodiment of the second invention, FIG. (b) is a side sectional view in that case. In the figure, (1) is the sheath pipe, (2) is the main pipe, (3) (30)
(aoa) (30b) (30c) (34) indicates the jig body, and (4X40) (43) indicates the sliding contact portion. Special fraud applicant Nippon Kokan Co., Ltd. Inventor Ryudo Masu Nakajima 1) Nao 2 Do
Isao Hatano, Patent Attorney, Sho Yoshihara, Sando
Same Takahashi consumption
Benshinshi Hiroko Yoshihara Figure 4 (b) Figure 5
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6398786A JPS62220790A (en) | 1986-03-24 | 1986-03-24 | Method of inserting main pipe and jig for inserting main pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6398786A JPS62220790A (en) | 1986-03-24 | 1986-03-24 | Method of inserting main pipe and jig for inserting main pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62220790A true JPS62220790A (en) | 1987-09-28 |
| JPH056073B2 JPH056073B2 (en) | 1993-01-25 |
Family
ID=13245146
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6398786A Granted JPS62220790A (en) | 1986-03-24 | 1986-03-24 | Method of inserting main pipe and jig for inserting main pipe |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62220790A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4815862U (en) * | 1971-07-02 | 1973-02-22 | ||
| JPS5126718A (en) * | 1974-08-29 | 1976-03-05 | Nishinippon Elec Wire Cable | Reionsui oyobi gasutaiyusokannofusetsuhoho |
| JPS51105112A (en) * | 1975-03-13 | 1976-09-17 | Nippon Kokan Kk | KANNOJUDOHOHO |
-
1986
- 1986-03-24 JP JP6398786A patent/JPS62220790A/en active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4815862U (en) * | 1971-07-02 | 1973-02-22 | ||
| JPS5126718A (en) * | 1974-08-29 | 1976-03-05 | Nishinippon Elec Wire Cable | Reionsui oyobi gasutaiyusokannofusetsuhoho |
| JPS51105112A (en) * | 1975-03-13 | 1976-09-17 | Nippon Kokan Kk | KANNOJUDOHOHO |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH056073B2 (en) | 1993-01-25 |
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