JP2582022B2 - Direction control device for propulsion device for burying pipes - Google Patents

Description

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

【０００１】[0001]

【産業上の利用分野】本発明は、電線、電話線の配設
管、上水、下水の水道管、ガス管など各種管を埋設する
管体埋設用推進装置の方向制御装置に関するものであ
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a directional control device for a propulsion device for burying pipes for burying various pipes such as electric and telephone lines, water supply, sewage water pipes and gas pipes. .

【０００２】[0002]

【従来の技術】先に、図７について管体埋設用推進装置
の概略について説明する。図中１は発進孔であり、この
発進孔１内には、送り出し用のローラ等を並べた管体配
置部３と、その後方で推進ジャッキ４により前後動する
摺動体５を基台２の上部に設けた推進装置６を配設す
る。2. Description of the Related Art First, an outline of a propulsion device for burying a pipe will be described with reference to FIG. In the figure, reference numeral 1 denotes a launching hole. Inside the launching hole 1, a pipe arrangement portion 3 in which rollers and the like for sending out are arranged, and a sliding body 5 which is moved back and forth by a propulsion jack 4 behind the portion, is provided on the base 2. The propulsion device 6 provided on the upper part is provided.

【０００３】一方、図中７は先端に回転掘削ヘッド８を
有する鋼管製の先導管で、その後方にはコンクリート管
等の埋設用管体９がカラーを介して接続する。[0003] On the other hand, reference numeral 7 in the figure denotes a steel pipe leading pipe having a rotary excavating head 8 at the tip, and an embedding pipe 9 such as a concrete pipe is connected to the rear thereof via a collar.

【０００４】このようにして、初めは先導管７のみを推
進装置６の管体配置部３上にセットし、回転掘削ヘッド
８を駆動しながら推進ジャッキ４により摺動体５を介し
て先導管７を推進ジャッキ４の１ストローク分地盤中に
押し入れる。[0004] In this way, at first, only the leading pipe 7 is set on the pipe arrangement portion 3 of the propulsion device 6, and while the rotary excavating head 8 is driven, the leading pipe 7 is moved by the propulsion jack 4 through the sliding body 5. Is pushed into the ground for one stroke of the propulsion jack 4.

【０００５】次いで、先導管７の後方に第１の埋設用管
体９を縦列に接続し、同様に推進装置６により押し入
れ、以下、順次、第２、第３…の埋設用管体９を縦列に
接続して押し入れていく。[0005] Next, the first embedding pipes 9 are connected in tandem behind the leading conduit 7 and similarly pushed in by the propulsion device 6, and the second, third,... Connect in columns and push in.

【０００６】そして、先導管７が到達孔（図示せず）に
達したならば、この到達孔側から先導管７を撤去し、ま
た、発進孔１から推進装置６を撤去し、縦列する埋設用
管体９のみを地中に残す。When the leading conduit 7 reaches a reaching hole (not shown), the leading conduit 7 is removed from the reaching hole side, and the propulsion device 6 is removed from the starting hole 1 so as to be laid in parallel. Only the pipe 9 is left underground.

【０００７】なお、回転掘削ヘッド８での掘削および排
土方法は種々あり、回転掘削ヘッド８で先導管７の内部
に土砂を取り込み、これを掘削ヘッド８の駆動軸を兼ね
たスクリューコンベアで埋設用管体９の内部を通して後
方に送る方法もあるが、泥土式もしくは泥土加圧方式を
採用し、作泥材を噴出しながら、回転掘削ヘッド８を高
速、高トルク回転させ、掘削した土砂をスラリー化して
先導管７の外周にそって移送する。There are various methods for excavating and unloading with the rotary excavating head 8. The rotary excavating head 8 takes in earth and sand inside the front pipe 7, and buries it with a screw conveyor also serving as a driving shaft of the excavating head 8. There is also a method of feeding backward through the inside of the pipe 9, but a mud type or a mud pressurizing method is adopted, and the rotary excavating head 8 is rotated at high speed and high torque while ejecting mud material, and the excavated soil is removed. The slurry is formed and transferred along the outer circumference of the leading conduit 7.

【０００８】この移送したスラリーは、先導管７の後部
から内部に取り込み、ポンプで発進孔１まで圧送する。[0008] The transferred slurry is taken into the inside from the rear part of the leading conduit 7 and is pumped to the starting hole 1 by a pump.

【０００９】ところでかかる管体埋設用推進装置で、先
導管７の方向修正は、図８に示すように先導管７を前胴
管７ａと後胴管７ｂとの２つに分割し、これら前胴管７
ａと後胴管７ｂとの間に方向修正ジャッキ10を３点ジャ
ッキ方式に配設し、該方向修正ジャッキ10のストローク
差で、前胴管７ａの向きを変えるようにしている。図中
11は、回転掘削ヘッド８の駆動モータで、これは前胴管
７ａ内にある。In the propulsion device for burying a pipe, the direction of the front pipe 7 is corrected by dividing the front pipe 7 into two parts, a front body pipe 7a and a rear body pipe 7b, as shown in FIG. Body tube 7
The direction correcting jack 10 is arranged in a three-point jack system between the a and the rear trunk pipe 7b, and the direction of the front trunk pipe 7a is changed by the stroke difference of the direction correcting jack 10. In the figure
Reference numeral 11 denotes a drive motor for the rotary excavating head 8, which is located in the front body tube 7a.

【００１０】[0010]

【発明が解決しようとする課題】このような方向修正ジ
ャッキ10による従来の管体埋設用推進装置の方向制御装
置では、機長が全体的にながくなり、また、姿勢制御機
構が充分なものといえず、即応性においてのタイムラグ
が生じており、操作性能に問題があり、線形の保持が難
しい。In the conventional direction control device for a tube burying propulsion device using such a direction correcting jack 10, the overall length of the machine is short and the attitude control mechanism is sufficient. However, there is a time lag in responsiveness, there is a problem in operation performance, and it is difficult to maintain the linearity.

【００１１】本発明の目的は前記従来例の不都合を解消
し、掘削ヘッドが硬質岩盤に当たっても不測に方向を変
えられることなく掘進の真直性を長距離に及んで維持さ
せることができ、しかも方向修正をする場合にはきめ細
かな調整が可能であり、操作性の向上を図れ、また即応
性の制御ができる管体埋設用推進装置の方向制御装置を
提供することにある。SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned disadvantages of the prior art, and to maintain the straightness of excavation over a long distance without being unexpectedly changed direction even when the excavation head hits hard rock. It is an object of the present invention to provide a direction control device for a pipe burying propulsion device which can be finely adjusted in the case of correction, can improve operability, and can control responsiveness.

【００１２】[0012]

【課題を解決するための手段】本発明は前記目的を達成
するため、先導管の先端に回転掘削ヘッドを設け、この
先導管に後続するように埋設用管体を順次縦列させ、最
後尾の埋設用管体の後端は発進孔内の推進ジャッキによ
る推進装置へ係合させて、先導管の先端の回転掘削ヘッ
ドで地盤を掘削し、埋設用管体を順次発進孔側で継ぎ足
しながら縦列させた管体群を推進装置で後端から押圧し
て地盤中に推進させる管体埋設用推進装置において、先
導管は、前胴管、中胴管、後胴管の３つに分割し、前胴
管および中胴管にこの前胴管に結合するものが中胴管に
結合するものの相互間に位置するように管周方向に適宜
間隔で配置した牽引部材の先端を結合し、該牽引部材を
後続管体胴部に沿わせ、該牽引部材の後端は後胴管もし
くはそれより後方の埋設用管体の内部にこの牽引部材の
管周方向に配置した間隔とほぼ同間隔で配設した牽引装
置にそれぞれ結合したことを要旨とするものである。According to the present invention, in order to achieve the above object, a rotary excavating head is provided at the tip of a leading pipe, and burying pipes are sequentially tandemly arranged so as to follow the leading pipe. The rear end of the pipe is engaged with the propulsion device by the propulsion jack in the launch hole, the ground is excavated with the rotary excavating head at the tip of the leading pipe, and the buried pipes are cascaded in sequence while successively adding at the launch hole side. In the propulsion device for burying pipes, which pushes the group of pipes pushed from the rear end by the propulsion device into the ground, the leading pipe is divided into three pipes: front trunk pipe, middle trunk pipe, and rear trunk pipe. The leading ends of traction members arranged at appropriate intervals in the circumferential direction of the tube are connected to the body tube and the middle body tube so that the one connected to the front body tube is located between the one connected to the middle body tube and the traction member. Along the body of the succeeding tube, and the trailing end of the traction member It is an summarized in that inside the interval arranged in the circumferential direction of the pipe of the towing member of the buried pipe member to have respectively coupled to the traction device which is disposed at almost the same intervals.

【００１３】[0013]

【作用】請求項１記載の本発明によれば、全ての牽引部
材はその後端を牽引装置に結合しているので、先導管を
直進させようとする場合は、該牽引装置により牽引部材
の全てを緊張させれば、前胴管、中胴管が後胴管もしく
はそれより後方の埋設用管体に均等に引き寄せられて、
前胴管、中胴管、後胴管は直管状態で接続され、そのま
ま直進可能となる。とくに、前胴管、中胴管、後胴管
は、それぞれの結合部では角度変更が可能であるが、あ
る程度の長さを有する管体なので、掘進の真直性が高い
状態を長距離に及んで維持できる。したがって、例えば
掘削ヘッドが硬質岩盤に当たっても不測に方向が変えら
れるという事態を引き起こすおそれはない。According to the first aspect of the present invention, since all the traction members are connected at their rear ends to the traction device, when the leading conduit is to be moved straight, the traction device uses all of the traction members. The front and middle trunk pipes are evenly drawn to the rear trunk pipe or the burial pipe behind it,
The front body pipe, the middle body pipe, and the rear body pipe are connected in a straight pipe state, and can go straight. In particular, the angles of the front, middle, and rear trunk pipes can be changed at their joints.However, since the pipes have a certain length, the straightness of excavation can be extended over long distances. Can be maintained. Thus, for example, there is no danger that the direction may be changed unexpectedly even if the excavating head hits the hard rock.

【００１４】一方、方向修正のため先導管を曲り状態と
するには、曲げようとする側の反対側の牽引部材を緩め
れば、これにより前胴管は中胴管に対し、中胴管は後胴
管に対して屈折する。また、前胴管の修正向きと中胴管
の修正向きは相互に間を埋めるような関係となり、後胴
管に対して前胴管と中胴管の方向修正角度を牽引部材を
緩める長さを変えることで異ならせることができ、より
きめの細やかな方向修正が可能となる。On the other hand, in order to make the front conduit bend to correct the direction, the traction member on the side opposite to the side to be bent is loosened, so that the front trunk tube is moved relative to the middle trunk tube. Is refracted with respect to the rear trunk tube. In addition, the correction direction of the front trunk tube and the correction direction of the middle trunk tube have a relationship that fills the gap between each other, and the direction correction angle of the front trunk tube and the middle trunk tube with respect to the rear trunk tube is set to the length to loosen the traction member. Can be changed by changing the direction, and finer direction correction can be performed.

【００１５】[0015]

【実施例】以下、図面について本発明の実施例を詳細に
説明する。図１は本発明の管体埋設用推進装置の方向制
御装置の１実施例を示す縦断側面図で、図中７は前記従
来例を示す図７における先導管である。この先導管７を
除く他の管体埋設用推進装置全体の構成については、前
記図７に示した通りであり、詳細説明を省略する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a longitudinal sectional side view showing an embodiment of a direction control device of a pipe burying propulsion device according to the present invention. In FIG. 1, reference numeral 7 denotes a front conduit in FIG. The configuration of the entire pipe burying propulsion device other than the front conduit 7 is as shown in FIG. 7 and the detailed description is omitted.

【００１６】本発明では、先導管７を、ある程度長さを
有する管体として前胴管７ａ、中胴管７ｃ、後胴管７ｂ
の３つに分割した。このうち、前胴管７ａは駆動モータ
11で駆動する回転掘削ヘッド８を先端に有する。また、
これら前胴管７ａと中胴管７ｃ、中胴管７ｃと後胴管７
ｂとは図示のように相互に遊嵌させたり、カラー等で接
続したりする。In the present invention, the front pipe 7 is formed as a pipe body having a certain length, the front pipe 7a, the middle pipe 7c, and the rear pipe 7b.
Was divided into three. The front tube 7a is a drive motor
It has a rotary excavating head 8 driven by 11 at its tip. Also,
These front trunk pipe 7a and middle trunk pipe 7c, middle trunk pipe 7c and rear trunk pipe 7
b is loosely fitted to each other as shown in the figure, or connected by a collar or the like.

【００１７】前記前胴管７ａの胴部にＰＣ鋼線等のワイ
ヤーや可撓性ロッドからなる牽引部材12の先端を結合
し、この牽引部材12を前胴管７ａ、中胴管７ｃ、後胴管
７ｂの胴部外周に沿わせて後方に導き、該牽引部材12の
後端は後胴管７ｂもしくはそれより後方の埋設用管体９
の内部に配設する牽引装置13にそれぞれ結合した。A front end of a traction member 12 made of a wire such as a PC steel wire or a flexible rod is connected to the body of the front trunk tube 7a, and the traction member 12 is connected to the front trunk tube 7a, the middle trunk tube 7c, and the rear trunk tube 7c. The traction member 12 is guided rearward along the outer periphery of the trunk portion of the trunk tube 7b, and the rear end of the traction member 12 is located at the rear trunk tube 7b or the burying tube 9 behind the rear trunk tube 7b.
Respectively connected to a traction device 13 disposed inside the vehicle.

【００１８】この牽引装置13としては、通常のジャッキ
もしくはセンターホール式のジャッキ、さらにウインチ
などを利用できる。As the traction device 13, a normal jack, a center hole type jack, a winch or the like can be used.

【００１９】また、該牽引部材12は図２に示すように、
前胴管７ａに対してその管周方向に約90°の間隔で４本
を配置する。これに応じて牽引装置13もこの牽引部材12
の管周方向に配置した間隔とほぼ同間隔で４個が配置さ
れる。Further, as shown in FIG.
Four tubes are arranged at an interval of about 90 ° in the circumferential direction of the front trunk tube 7a. In response, the traction device 13 is also
Are arranged at substantially the same interval as the interval arranged in the pipe circumferential direction.

【００２０】なお、牽引部材12を前胴管７ａ、中胴管７
ｃ、後胴管７ｂの胴部外周に沿わせるには、これらの外
周に長さ方向に管体16を設け、これをガイドとしてその
中を挿通させるようにしてもよい。また、他の実施例と
して前胴管７ａ、中胴管７ｃ、後胴管７ｂの胴部が肉厚
の場合は、その内部に挿通孔を形成してその中を通して
もよい。なお、牽引部材12は後胴管７ｂの途中から内側
に引き込むようにした。The traction member 12 is connected to the front tube 7a and the middle tube 7
c. In order to follow the outer periphery of the trunk portion of the rear trunk tube 7b, a tube body 16 may be provided on the outer periphery in the length direction, and this may be used as a guide to be inserted therethrough. Further, as another embodiment, when the body portions of the front body tube 7a, the middle body tube 7c, and the rear body tube 7b are thick, an insertion hole may be formed therein so as to pass therethrough. The traction member 12 is drawn inward from the middle of the rear trunk tube 7b.

【００２１】さらに、中胴管７ｃの胴部にも牽引部材12
と同様な牽引部材14の先端を結合し、該牽引部材14をこ
の中胴管７ｃおよび後続の後胴管７ｂの胴部に沿わせ、
後端は後胴管７ｂもしくはそれより後方の埋設用管体９
の内部に配設する牽引装置15にそれぞれ結合する。Further, the traction member 12 is also provided on the body of the middle body tube 7c.
The leading end of the traction member 14 similar to the above is connected, and the traction member 14 is moved along the trunk of the middle trunk tube 7c and the subsequent rear trunk tube 7b.
The rear end is the rear trunk tube 7b or the burial tube 9 behind it.
Respectively connected to a traction device 15 disposed inside the vehicle.

【００２２】この牽引部材14も中胴管７ｃに対してその
管周方向に約90°の間隔で４本を配置するが、この牽引
部材14の配置は前記前胴管７ａに結合する牽引部材12相
互の中間に位置させ、牽引部材12と牽引部材14とは約45
°の間隔を存して計８本が管周方向に並ぶ。これに応じ
て牽引装置15もこの牽引部材14の管周方向に配置した間
隔とほぼ同間隔で４個が配置される。The four traction members 14 are also arranged at an interval of about 90 ° in the circumferential direction with respect to the middle body tube 7c. The arrangement of the traction members 14 is such that the traction member is connected to the front body tube 7a. (12) The traction member 12 and the traction member 14
A total of eight tubes are arranged in the pipe circumferential direction at intervals of °. Accordingly, four towing devices 15 are arranged at substantially the same interval as the intervals of the towing members 14 arranged in the pipe circumferential direction.

【００２３】次に、使用法および動作について説明す
る。先導管７を直進させようとする場合は、全ての牽引
部材12および牽引部材14はその後端を牽引装置13，15に
結合しているので、これら牽引装置13，15により牽引部
材12，14の全てを緊張させれば、図４に示すように前胴
管７ａおよび中胴管７ｃが後胴管７ｂもしくはそれより
後方の埋設用管体９の方に均等に真っ直ぐに引き寄せら
れて、前胴管７ａ、中胴管７ｃ、後胴管７ｂは直管状態
で接続され、そのまま直進可能となる。とくに、前胴管
７ａ、中胴管７ｃ、後胴管７ｂは、それぞれの結合部で
は角度変更が可能であるが、ある程度の長さを有する管
体なので、掘進の真直性が高い状態を長距離に及んで維
持でき、例えば掘削ヘッドが硬質岩盤に当たっても不測
に方向が変えられるという事態を引き起こすおそれはな
い。なお、牽引装置13，15は後胴管７ｂもしくは埋設用
管体９の内部に配設されているので、先導管７を含めた
管体埋設用推進装置の推進の妨げとならない。そして、
図７で示した推進装置６で押圧することにより先導管７
及び埋設用管体９が直進する。Next, usage and operation will be described. When the leading conduit 7 is to be moved straight, all the traction members 12 and 14 are connected at their rear ends to the traction devices 13 and 15, so that the traction members 12 and 14 can be moved by these traction devices 13 and 15. When all are tensioned, as shown in FIG. 4, the front trunk pipe 7a and the middle trunk pipe 7c are evenly and straightly drawn toward the rear trunk pipe 7b or the burying pipe body 9 behind the front trunk pipe 7b. The pipe 7a, the middle trunk pipe 7c, and the rear trunk pipe 7b are connected in a straight pipe state, and can go straight. In particular, the front body pipe 7a, the middle body pipe 7c, and the rear body pipe 7b can be changed in angle at their joints, but since they have a certain length, the straightness of the excavation is high. It can be maintained over distances, and there is no danger that, for example, if the drilling head hits hard rock, it may be accidentally changed direction. Since the traction devices 13 and 15 are disposed inside the rear trunk tube 7b or the burying tube 9, they do not hinder the propulsion of the tube burying propulsion device including the leading conduit 7. And
Pressing with the propulsion device 6 shown in FIG.
And the burying pipe 9 goes straight.

【００２４】一方、方向修正のため先導管７を曲状態と
するには、曲げようとする側の反対側の牽引部材12およ
び牽引部材14を緩めればよい。On the other hand, in order to make the leading conduit 7 bent in order to correct the direction, the traction members 12 and 14 on the opposite side of the side to be bent may be loosened.

【００２５】図５はその様子を示し、例えば上部に位置
する牽引部材12を緩めればその反対にある下部の牽引部
材12のみが牽引するので、前胴管７ａは中胴管７ｃに対
して下向きに折れ曲がる。また、右上にある牽引部材14
を緩めれば、その反対にある左下の牽引部材12のみが牽
引するので、中胴管７ｃは後胴管７ｂに対して左下の方
向に折れ曲がる。とくに、前胴管７ａの修正向きと中胴
管７ｃの修正向きは相互に間を埋めるような関係とな
り、後胴管７ｂに対して前胴管７ａと中胴管７ｃの方向
修正角度を牽引部材12、14を緩める長さを変えることで
異ならせることができ、よりきめの細やかな方向修正が
可能となる。FIG. 5 shows this state. For example, if the traction member 12 located at the upper part is loosened, only the lower traction member 12 at the opposite side is towed, so that the front trunk pipe 7a moves relative to the middle trunk pipe 7c. Bend downward. Also, the traction member 14 on the upper right
Is loosened, only the lower left pulling member 12 on the opposite side pulls, so that the middle trunk tube 7c is bent in the lower left direction with respect to the rear trunk tube 7b. In particular, the correction direction of the front trunk tube 7a and the correction direction of the middle trunk tube 7c have a relationship that fills each other, and the direction correction angle of the front trunk tube 7a and the middle trunk tube 7c is pulled with respect to the rear trunk tube 7b. The length can be changed by changing the length of loosening the members 12 and 14, so that the direction can be corrected more finely.

【００２６】このようにして、図６に示すように上下、
左右、左上、左下、右上、右下のいずれにも曲げること
ができる。なお、牽引装置13，15の動作をコンピュータ
に入力し、これをもとにＣＲＴ画面に図４や図５のごと
き状態をモニター図として表示して操作を行うようにし
てもよい。In this way, as shown in FIG.
It can be bent to left, right, upper left, lower left, upper right, lower right. The operation of the towing devices 13 and 15 may be input to a computer, and based on the operation, the state as shown in FIGS. 4 and 5 may be displayed as a monitor diagram on a CRT screen to perform the operation.

【００２７】[0027]

【発明の効果】以上述べたように本発明の管体埋設用推
進装置の方向制御装置は、掘削ヘッドが硬質岩盤に当た
っても不測に方向を変えられることなく掘進の真直性を
長距離に及んで維持させることができ、しかも方向修正
をする場合にはきめ細かな調整が可能であり、操作性の
向上を図れ、また即応性の制御ができるものである。As described above, the direction control apparatus for a propulsion device for burying a pipe according to the present invention can extend the straightness of excavation over a long distance without accidentally changing its direction even when the excavation head hits hard rock. In this case, fine adjustment can be performed when the direction is corrected, operability can be improved, and responsiveness can be controlled.

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

【図１】本発明の管体埋設用推進装置の方向制御装置の
１実施例を示す縦断側面図である。FIG. 1 is a longitudinal sectional side view showing one embodiment of a direction control device of a tubular body burying propulsion device of the present invention.

【図２】図１のＡ−Ａ線断面図である。FIG. 2 is a sectional view taken along line AA of FIG.

【図３】図１のＢ−Ｂ線断面図である。FIG. 3 is a sectional view taken along line BB of FIG. 1;

【図４】直進時の状態図である。FIG. 4 is a state diagram when the vehicle goes straight ahead.

【図５】曲がり時の状態図である。FIG. 5 is a state diagram at the time of bending.

【図６】コントロールの模式図である。FIG. 6 is a schematic diagram of a control.

【図７】管体埋設用推進装置の概要を示す側面図であ
る。FIG. 7 is a side view showing an outline of a pipe burying propulsion device.

【図８】従来の方向制御装置を示す斜視図である。FIG. 8 is a perspective view showing a conventional direction control device.

【符号の説明】[Explanation of symbols]

１…発進孔 ２…基台 ３…管体配置部 ４…推進ジャッ
キ ５…摺動体 ６…推進装置 ７…先導管 ７ａ…前胴管 ７ｂ…後胴管 ７ｃ…中胴管 ８…回転掘削ヘッド ９…埋設用管体 10…方向修正ジャッキ 11…駆動モータ 12, 14…牽引部材 13, 15…牽引装
置 16…管体DESCRIPTION OF SYMBOLS 1 ... Starting hole 2 ... Base 3 ... Tube body arrangement part 4 ... Propulsion jack 5 ... Sliding body 6 ... Propulsion device 7 ... Front conduit 7a ... Front trunk tube 7b ... Rear trunk tube 7c ... Middle trunk tube 8 ... Rotary drilling head 9 ... buried pipe 10 ... direction correction jack 11 ... drive motor 12, 14 ... traction member 13, 15 ... traction device 16 ... pipe

Claims (1)

(57)【特許請求の範囲】(57) [Claims] 【請求項１】 先導管の先端に回転掘削ヘッドを設け、
この先導管に後続するように埋設用管体を順次縦列さ
せ、最後尾の埋設用管体の後端は発進孔内の推進ジャッ
キによる推進装置へ係合させて、先導管の先端の回転掘
削ヘッドで地盤を掘削し、埋設用管体を順次発進孔側で
継ぎ足しながら縦列させた管体群を推進装置で後端から
押圧して地盤中に推進させる管体埋設用推進装置におい
て、先導管は、前胴管、中胴管、後胴管の３つに分割
し、前胴管および中胴管にこの前胴管に結合するものが
中胴管に結合するものの相互間に位置するように管周方
向に適宜間隔で配置した牽引部材の先端を結合し、該牽
引部材を後続管体胴部に沿わせ、該牽引部材の後端は後
胴管もしくはそれより後方の埋設用管体の内部にこの牽
引部材の管周方向に配置した間隔とほぼ同間隔で配設し
た牽引装置にそれぞれ結合したことを特徴とする管体埋
設用推進装置の方向制御装置。1. A rotary excavating head is provided at the tip of a leading conduit,
The burial pipes are sequentially cascaded so as to follow the front pipe, and the rear end of the last buried pipe is engaged with the propulsion device by the propulsion jack in the launch hole, and the rotary excavation head at the tip of the front pipe. In the pipe burying propulsion device, the propulsion device pushes the group of tubing that has been cascaded from the rear end with the propulsion device and propelled into the ground while excavating the ground at the launch hole side. The front body tube, the middle body tube, and the rear body tube are divided into three parts, and the front body tube and the middle body tube are connected to each other so that the one connected to the front body tube is located between the ones connected to the middle body tube. The leading ends of the traction members arranged at appropriate intervals in the circumferential direction of the pipe are connected, and the traction members are arranged along the body of the succeeding pipe, and the rear end of the traction member is connected to the rear trunk pipe or the buried pipe behind it. Internally, the traction devices are installed at approximately the same intervals as the traction members arranged in the pipe circumferential direction. Direction control device of the tube buried propulsion device, characterized in that combined.