JP3345738B2 - Water injection mechanism of propulsion device in underground excavation method - Google Patents
Water injection mechanism of propulsion device in underground excavation methodInfo
- Publication number
- JP3345738B2 JP3345738B2 JP26799795A JP26799795A JP3345738B2 JP 3345738 B2 JP3345738 B2 JP 3345738B2 JP 26799795 A JP26799795 A JP 26799795A JP 26799795 A JP26799795 A JP 26799795A JP 3345738 B2 JP3345738 B2 JP 3345738B2
- Authority
- JP
- Japan
- Prior art keywords
- shaft
- pipe
- screw conveyor
- water
- propulsion device
- 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.)
- Expired - Fee Related
Links
Landscapes
- Excavating Of Shafts Or Tunnels (AREA)
- Screw Conveyors (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、配管の計画線上の
地表面を開削することなしに、所定間隔を置いて構築し
た発進立坑と到達立坑の間に、埋設管を発進立坑から到
達立坑へ土中を推進させて埋設するもので、特に、小口
径管を一工程工法により埋設する非開削地中配管工法に
おける推進装置の注水機構に関するものである。BACKGROUND OF THE INVENTION The present invention relates to a method for moving a buried pipe from a start shaft to an arrival shaft between a start shaft and an arrival shaft constructed at a predetermined interval without cutting the ground surface on a planned line of piping. The present invention relates to a water injection mechanism of a propulsion device in a non-drilling underground piping method in which a small-diameter pipe is buried by a one-step method.
【０００２】[0002]
【従来の技術】近年、電話線、電気線の埋設管や下水道
管の埋設工事において、交通事情、近隣の住民感情など
により、地表面を開削して管を埋設する工法に代えて、
配管の計画線上に所定の間隔距離をおいて発進立坑と到
達立坑を設け、埋設管を発進立坑から到達立坑へ土中の
中を推進させて発進立坑と到達立坑の間に配管する非開
削の推進工法が知られている。2. Description of the Related Art In recent years, in the laying work of buried pipes for telephone lines and electric lines and sewage pipes, instead of a method of burying pipes by digging the ground surface due to traffic conditions, feelings of local residents, etc.
A starting shaft and a reaching shaft are provided at a predetermined distance on the pipeline planning line, and a buried pipe is propelled in the soil from the starting shaft to the reaching shaft, and piping is performed between the starting shaft and the reaching shaft. The propulsion method is known.
【０００３】前記推進工法は一工程方式と仮管二工程方
式に大別されるが、前記一工程方式により小口径管を敷
設する推進装置としては、種々の機器及び施行法がある
が、そのうちの一つに、埋設管を土中に押圧推進する推
進機、埋設管の中にセットする排土用のスクリュウコン
ベア、及び内部に測量用のタ−ゲットを内蔵する斜切管
等の機器から構成され、スクリュウコンベアを埋設管の
中にセットし、前記斜切管を最先となるスクリュウコン
ベアの先端に接続し、前記斜切管を先頭にしてスクリュ
ウコンベアをセットした埋設管を推進機により発進立坑
から地中へ突き押し推進させ、前記スクリュウコンベア
の軸は両端を貫通する管軸になり、測量器により、推進
機の後ろからスクリュウコンベアの軸の内筒を通して斜
切管に備える前記測量器のタ−ゲットを直視することに
より推進方向を計画中心線に一致するように修正しなが
ら、埋設管を順次継ぎ足して推進させて到達立坑へ到達
させ、発進立坑と到達立坑の間に埋設管を敷設する推進
装置及び施行法が良く知られている。[0003] The propulsion method is roughly classified into a one-step method and a temporary pipe two-step method. There are various devices and implementation methods as a propulsion device for laying a small-diameter pipe by the one-step method. One of them is a propulsion device that pushes and buries a buried pipe into the soil, a screw conveyor for discharging the earth to be set in the buried pipe, and equipment such as an inclined pipe with a built-in target for surveying. The screw conveyor is set in a buried pipe, the beveled pipe is connected to the tip of the screw conveyor that is the foremost, and the buried pipe on which the screw conveyor is set with the beveled pipe at the head is driven by a propulsion device. Pushed and propelled from the starting shaft into the ground, the axis of the screw conveyor became a pipe axis penetrating both ends, and the surveying instrument was used to prepare the oblique tube through the inner cylinder of the screw conveyor shaft from behind the propulsion machine. Directly looking at the target of the measuring device, while correcting the propulsion direction so that it matches the planned center line, buried pipes are sequentially added and propelled to reach the reaching shaft, and buried between the starting shaft and the reaching shaft Propulsion devices for laying pipes and enforcement laws are well known.
【０００４】[0004]
【発明が解決しようとする課題】従来の技術で述べた推
進装置は、斜切管で土中を突き押して推進する方式のも
のであるため、５０メ−トル以上の長距離の推進能力を
得るには、適応土質が軟弱土及び普通土の地盤に限ら
れ、硬質粘土や締まった砂土質の地盤に対しては適応能
力がなかった。また、小口径の埋設管の場合でも、５０
メ−トル以上の長距離の推進距離を得るためには、スク
リュウコンベアの軸は、軸の内筒を通して斜切管に内蔵
する測量用のタ−ゲットを長距離に亙って直視可能とす
るために十分な内径を確保しなければならないために、
軸径を大きくすると、軸の外周に備える羽根の高さが低
くなって排土効率が悪くなり、その結果、適応土質は軟
弱土質及び普通土質の地盤に限られている。これに対
し、羽根を高くすると軸の内径が小さくなって方向修正
器の直視能力が低下し、結局、推進距離が短くなる問題
があった。The propulsion device described in the prior art is of a type in which the propulsion device is propelled by pushing through the soil with an oblique cutting pipe, so that a long-distance propulsion capability of 50 meters or more can be obtained. In Japan, the adaptation soil was limited to the soil of soft soil and ordinary soil, and there was no adaptation ability to the hard clay and the soil of the sandy soil. Also, even in the case of a small diameter buried pipe, 50
In order to obtain a long propulsion distance longer than the meter, the screw conveyor shaft allows the surveying target built in the oblique tube to be directly visible over a long distance through the inner cylinder of the shaft. To have enough inside diameter to
When the shaft diameter is increased, the height of the blades provided on the outer periphery of the shaft is reduced, and the soil discharging efficiency is deteriorated. As a result, the adaptive soil quality is limited to the soft soil and the normal soil. On the other hand, if the height of the blade is increased, the inner diameter of the shaft is reduced, and the direct-viewing ability of the direction corrector is reduced. As a result, the propulsion distance is reduced.
【０００５】更に、硬土質の地盤でも、斜切管の先端の
地盤を注水により緩めることにより長距離推進を得るこ
とが可能である。しかしながら、小口径管の場合、スク
リュウコンベアは、例えば、管軸の内筒の中に注水パイ
プ等を設けると、管軸の内径が狭くなって測量用タ−ゲ
ットに対する測量能力を低下することになり、従って、
前述したような管軸の内径と羽根の高さとの関係、即
ち、前記タ−ゲットに対する測量能力とスクリュウコン
ベアの排土能力との関係から検討して、管軸の内筒の中
に注水パイプ等を設ける余地はなく、それ故に、小口径
管の一工程方式の推進装置に注水機構を設けることは推
進距離を短くするか、適応土質が軟弱土及び普通土に限
定されることになるだけという問題点があった。Further, even on hard soil, long distance propulsion can be obtained by loosening the ground at the tip of the inclined tube by water injection. However, in the case of a small-diameter pipe, for example, if a water injection pipe or the like is provided in the inner cylinder of the pipe shaft, the screw conveyor will have a reduced inner diameter of the pipe shaft, which will reduce the surveying capability of the survey target. And therefore
Considering the relationship between the inner diameter of the pipe shaft and the height of the blade as described above, that is, the relationship between the surveying ability for the target and the earth discharging capacity of the screw conveyor, a water injection pipe is inserted into the inner cylinder of the pipe shaft. Therefore, providing a water injection mechanism in a one-step type propulsion system for small-diameter pipes would shorten the propulsion distance or only limit the adaptable soil to soft soil and ordinary soil. There was a problem.
【０００６】本発明は、上記の問題点に鑑みてなされた
ものであって、その目的とするところは、小口径の埋設
管を敷設する一工程工法において、スクリュウコンベア
の軸の外周に備える羽根の推進方向側の付け根に沿って
注水パイプをつるまき状に設けて形成することにより、
測量器のタ−ゲットに対する直視能力及び羽根の排土能
力を低下させることなく注水機構の設備を実現すること
により、軟弱土、普通土はいうまでもなく、硬質粘土や
締まった砂土質の地盤に対しても小口径管の長距離推進
を可能とした非開削配管工法における推進装置の注水機
構を提供するものである。SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and an object of the present invention is to provide a one-step method for laying a small-diameter buried pipe in a blade provided on an outer periphery of a shaft of a screw conveyor. By forming a water injection pipe in the shape of a helix along the root on the propulsion direction side of
By realizing the facilities of the water injection mechanism without lowering the direct-viewing ability of the surveying instrument to the target and the ability of the blades to discharge the soil, it is possible to use not only soft soil and ordinary soil but also hard clay and tight sandy soil. The present invention also provides a water injection mechanism for a propulsion device in a non-drilling piping method that enables long-distance propulsion of small-diameter pipes.
【０００７】[0007]
【問題を解決するための手段】上記目的を達成するため
に、本発明にかかる非開削地中配管工法における推進装
置の注水機構は、発進立坑から推進機により、内部にス
クリュウコンベアを設けた埋設管を計画中心線に合わせ
て最先となる前記スクリュウコンベアの先端に接続した
先頭管により所定距離まで突き押し推進して発進立坑と
到達立坑の間に埋設管を敷設する推進装置において、前
記スクリュウコンベアは両端を貫通する管軸になる軸の
外周に羽根をつる巻き状に巻つけ、このスクリュウコン
ベアは送水パイプを羽根の付け根に沿って巻つけて軸の
外周につる巻き状に設け、軸の両端に設けた接続フラン
ジに前記送水パイプの両端を接続する連通孔を穿設して
形成する。Means for Solving the Problems In order to achieve the above object, a water injection mechanism of a propulsion device in a non-drilling underground piping method according to the present invention is provided by burying a screw conveyor internally provided by a propulsion device from a starting shaft. A propulsion device for laying a buried pipe between a starting shaft and a reaching shaft by pushing a pipe to a predetermined distance by a leading pipe connected to the tip of the screw conveyor, which is the foremost, in alignment with a planned center line; The conveyor is wound around a shaft that becomes a tube shaft that penetrates both ends by winding blades around the shaft.This screw conveyor is provided with a water supply pipe wound along the base of the blades and wound around the shaft. A communication hole for connecting both ends of the water supply pipe is formed in connection flanges provided at both ends of the water supply pipe.
【０００８】前記スクリュウコンベアは軸の外周につる
巻き状に巻つけた羽根の推進方向側となる面の付け根に
沿った軸の外周に注水パイプをつる巻き状に設けるのが
好ましい。The screw conveyor is preferably provided with a water injection pipe in a helical shape on the outer periphery of the shaft along the root of the surface on the propulsion direction side of the blade wound in a helical shape on the outer periphery of the shaft.
【０００９】前記スクリュウコンベアの両端に設けた接
続フランジは楕円形状に形成し、羽根の端部が接続フラ
ンジの短軸位置になるようにし、スクリュウコンベアの
接続部における排土機能が接続フランジによって妨げら
れないようにするのが好ましい。また、先頭管と接続す
る最先となるスクリュウコンベアは、一端側を前記先頭
管の接続フランジの形状に一致する円形に形成し、他端
を前記スクリュウコンベアの接続フランジと一致する楕
円形状に形成するのが好ましい。The connection flanges provided at both ends of the screw conveyor are formed in an elliptical shape so that the ends of the blades are positioned at the short axis of the connection flange, and the connection flange of the screw conveyor prevents the earth discharging function. It is preferable not to be able to do so. Also, the screw conveyor that is the earliest connected to the leading pipe has one end formed in a circular shape that matches the shape of the connecting flange of the leading pipe, and the other end formed in an elliptical shape that matches the connecting flange of the screw conveyor. Is preferred.
【００１０】前記先端を斜切し内部に測量用のタ−ゲッ
トを備えてなる先頭管は、接続フランジの接続面に設け
た連通口からフランジの外周面に導通穿設した放水口を
設け且つ前記放水口には一端を自由状態とする可撓性の
キャップを設置するのが好ましい。[0010] The leading pipe, which is beveled at the tip and provided with a target for surveying inside, is provided with a water discharge port formed through a communication hole provided on the connection surface of the connection flange on the outer peripheral surface of the flange. It is preferable to install a flexible cap having one end in a free state at the water outlet.
【００１１】前記推進機は、水蜜に重合する内筒と外筒
の間を一周する空室を設けると共に前記空室に連通する
給水栓を有する被覆筒を前記外筒に水蜜に回転自在に設
置し且つ前記空室から接続フランジの側面に導通開口す
る通水路を設けてスイベル装置を形成し、両端のフラン
ジにそれぞれ通水路を貫通穿設して注水パイプの両端を
連通接続してなる回転装置を形成し、前記回転装置に前
記スイベル装置を互いの通水路を連通させて接続設置す
るのが好ましい。The thruster is provided with an empty chamber surrounding the inner cylinder and the outer cylinder which are superposed on the nectar, and a covering cylinder having a water tap connected to the empty chamber is rotatably mounted on the nectar in the outer cylinder. A rotating device formed by providing a water passage that opens from the vacant space to the side surface of the connection flange to form a swivel device, and penetrating the water passage in each of the flanges at both ends to communicate and connect both ends of the water injection pipe; It is preferable that the swivel device is connected to the rotating device by connecting the water passages to each other.
【００１２】[0012]
【発明の実施の形態】発明の実施の形態について図面を
参照して説明すると、図１は本発明の非開削の地中配管
工法に使用する推進機の一例を示す概略図で、推進機１
は駆動本体２を油圧ジャッキ３によりベッド４の上を前
進後退自在せしめてなり、スクリュウコウベア５をセッ
トした埋設管６を前記駆動本体２に設置し、測量用のタ
−ゲット７を備えた先頭管８を先頭となるスクリュウコ
ンベア５に接続して推進機１の油圧ジャッキ３で押圧し
て埋設管６を土中へ推進させる。前記推進機１はスクリ
ュウコンベア５を回転させる筒体になる回転装置９を有
し、前記スクリュウコンベア５を回転させて埋設管６の
中に取り込まれたズリを推進立坑へ排土する。前記スク
リュウコンベア５の軸１０は両端を貫通する管軸になり
この軸１０の外周に羽根１１をつる巻状に巻つけて形成
され、前記推進機１の後部に据えつけた測量器７ａによ
り、前記回転装置９から前記軸１０の内筒を通して先頭
管８に備える測量用のタ−ゲット７を直視して推進方向
を修正しながら埋設管６を油圧ジャッキ３で押圧して土
中へ推進する。DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a schematic view showing an example of a propulsion machine used for a non-cutting underground piping method according to the present invention.
The drive body 2 is made to be able to move forward and backward on a bed 4 by a hydraulic jack 3, a buried pipe 6 on which a screw conveyor 5 is set is installed on the drive body 2, and a target 7 for surveying is provided. The head pipe 8 is connected to the screw conveyor 5 serving as the head, and is pressed by the hydraulic jack 3 of the propulsion device 1 to propel the buried pipe 6 into the soil. The propulsion device 1 has a rotating device 9 serving as a cylindrical body for rotating the screw conveyor 5, and rotates the screw conveyor 5 to discharge the waste taken in the buried pipe 6 to the propulsion shaft. The shaft 10 of the screw conveyor 5 is a tube shaft penetrating both ends. The shaft 10 is formed by winding a blade 11 around the outer periphery of the shaft 10 in a helical shape, and is measured by a surveying instrument 7a mounted on the rear part of the propulsion device 1. The buried pipe 6 is pressed by the hydraulic jack 3 and propelled into the soil while correcting the propulsion direction while directly looking at the survey target 7 provided on the leading pipe 8 from the rotating device 9 through the inner cylinder of the shaft 10. .
【００１３】図２は本発明のスクリュウコンベアの正面
図、図３はその要部拡大断面図、図４は両側の接続フラ
ンジを示す平面図、図５はスクリュウコンベアの側面図
を示し、スクリュウコンベア５は羽根１１の付け根に沿
って軸１０の外周につる巻状に送水パイプ１２を設置
し、前記スクリュウコンベア５の両端に接続フランジ１
３ａ，１３ｂを有し、この接続フランジ１３ａ，１３ｂ
には送水パイプ１２を接続する連通孔１４ａ，１４ｂが
貫通穿設される。前記スクリュウコンベア５は両端の接
続フランジ１３ａ，１３ｂに備えるボルト孔１５ａ，１
５ｂを介してボルト締めにより複数のスクリュウコンベ
ア５が順次継ぎ足し自在せしめられる。また、スクリュ
ウコンベア５は羽根１１の推進方向裏側に土圧がかかる
ので、前記送水パイプ１２は土圧のかからない羽根１１
の推進方向前面側の付け根に設けるのが好ましい。FIG. 2 is a front view of the screw conveyor of the present invention, FIG. 3 is an enlarged sectional view of a main part thereof, FIG. 4 is a plan view showing connection flanges on both sides, FIG. 5 is a side view of the screw conveyor, FIG. Reference numeral 5 denotes a water supply pipe 12 which is wound around the outer periphery of the shaft 10 along the root of the blade 11 and has connection flanges 1 at both ends of the screw conveyor 5.
3a, 13b, and these connection flanges 13a, 13b
The communication holes 14a and 14b for connecting the water supply pipe 12 are penetrated. The screw conveyor 5 has bolt holes 15a, 1 provided in connection flanges 13a, 13b at both ends.
A plurality of screw conveyors 5 can be successively added by bolting via 5b. Further, since the screw conveyor 5 receives earth pressure on the back side in the propulsion direction of the blade 11, the water supply pipe 12 applies the blade 11 to which no earth pressure is applied.
Is preferably provided at the base on the front side in the propulsion direction.
【００１４】図７は先頭管の一部切欠して示す正面図
で、先頭管８は先端を斜切りした斜切管として形成さ
れ、内部に測量用のタ−ゲット７を備えてなり、基端側
に備える接続フランジ１６の接続側面に前記スクリュウ
コンベア５の接続フランジ１３ａの連通孔１４ａと重合
連通する連通口１７を設けてこの連通孔１７を接続フラ
ンジ１６の外周面に導通穿設する放水口１８を設けて形
成される。前記放水口１８には、図８に示すように、可
撓性を有するキャップ１９を一端を固着し且つ他端を自
由状態として設置し、前記放水口１８への土砂の侵入が
阻止すると共に放水口１８から出る水がキャップ１９の
自由端側から土中へ放水されるようにするのが好まし
い。FIG. 7 is a front view of the leading pipe 8 partially cut away. The leading pipe 8 is formed as an oblique tube having a beveled tip, and has a target 7 for surveying inside. A communication port 17 is provided on the connection side surface of the connection flange 16 provided on the end side to communicate with the communication hole 14 a of the connection flange 13 a of the screw conveyor 5, and the communication hole 17 is formed in the outer peripheral surface of the connection flange 16. It is formed by providing a water port 18. As shown in FIG. 8, a flexible cap 19 is fixed to one end of the water outlet 18 and the other end is set in a free state to prevent intrusion of earth and sand into the water outlet 18 and discharge the water. It is preferable that the water exiting from the water port 18 be discharged from the free end side of the cap 19 into the soil.
【００１５】前記スクリュウコンベア５の両端の接続フ
ランジ１３ａ，１３ｂは、図５に示すように、楕円形状
に形成し、羽根１１の両端部を接続フランジ１３ａ，１
３ｂの楕円形の短軸側周面に位置させて、スクリュウコ
ンベアを連結したときに互いの羽根１１が接続され、接
続部における排土機能がこれらの接続フランジ１３ａ，
１３ｂによって妨げられないようにするのが好ましい。
また、一端側の接続フランジ１３ａの接続面に楕円形の
長軸方向の凹溝２０ａを穿設し、他端側の接続フランジ
１３ｂには前記凹溝２０ａを嵌合する楕円形の長軸方向
の凸条２０ｂを突設し、これらの凹溝２０ａと凸条２０
ｂとの嵌合により、複数のスクリュウコンベア５の接続
を堅固確実にするのが好ましい。As shown in FIG. 5, the connection flanges 13a and 13b at both ends of the screw conveyor 5 are formed in an elliptical shape, and both ends of the blade 11 are connected to the connection flanges 13a and 1b.
3b, the blades 11 are connected to each other when the screw conveyors are connected, and the earth discharging function at the connection portion is controlled by these connection flanges 13a, 13b.
Preferably, it is not hindered by 13b.
An elliptical long groove 20a is formed in the connection surface of one end of the connection flange 13a, and the elliptical long groove is fitted in the connection flange 13b of the other end. Projecting ridges 20b are projected, and these concave grooves 20a and
It is preferable that the connection of the plurality of screw conveyors 5 be firmly and securely connected by fitting with the screw conveyor 5.
【００１６】また、先頭管８と接続する最先となるスク
リュウコンベア５ａは、図６に示すように、一端側の接
続フランジ１３ｃを前記先頭管８の接続フランジ１６の
円形形状に一致する円形に形成し、他端側には前記スク
リュウコンベア５に備える楕円形状になり凸状２０ｂを
有する接続フランジ１３ｂを設けて形成するのが好まし
い。Further, as shown in FIG. 6, the screw conveyor 5a, which is the earliest connected to the leading pipe 8, has a connecting flange 13c at one end formed in a circular shape corresponding to the circular shape of the connecting flange 16 of the leading pipe 8. It is preferable to form a connection flange 13b provided on the other end side of the screw conveyor 5 and having an elliptical shape and a convex shape 20b.
【００１７】前記推進機１の駆動本体２に備える回転装
置９にはスイベル装置２１が接続設置される。このスイ
ベル装置２１は、両端を貫通する内筒２２に外筒２３を
水蜜に一体に重合固着してこれら内筒２２と外筒２３の
間を一周して密封する空室２４を形成し、前記外筒２３
の外周に被覆筒２５を水密に且つ回転自在に設置し、こ
の被覆筒２５には前記空室２４に連通する給水栓２６が
設けられ、前記空室２４は前記内筒２１及び外筒２３の
一端側に備える接続フランジ２７ａ，２７ｂに導通し且
つフランジ２７ａの側面に開口する通水路２８を設けて
形成する。A swivel device 21 is connected to the rotating device 9 provided in the drive main body 2 of the propulsion device 1. The swivel device 21 forms an empty chamber 24 which is integrally fixed to an inner cylinder 22 penetrating both ends and a water honey by superimposing and fixing the outer cylinder 23 around the inner cylinder 22 and the outer cylinder 23 so as to seal. Outer cylinder 23
A coating cylinder 25 is provided on the outer periphery of the casing in a watertight and rotatable manner, and a water tap 26 communicating with the empty chamber 24 is provided in the coating cylinder 25. The empty chamber 24 is formed of the inner cylinder 21 and the outer cylinder 23. It is formed by providing a water passage 28 that is electrically connected to the connection flanges 27a and 27b provided on one end side and opens to the side surface of the flange 27a.
【００１８】前記回転装置９の両端に有するフランジ２
９ａ，２９ｂに通水路３０ａ，３０ｂをそれぞれ貫通穿
設し、注水パイプ３１を前記フランジ２９ａ，２９ｂの
通水路３０ａ，３０ｂに接続設置して形成する。この回
転装置９のフランジ２９ｂに前記スイベル装置２０の接
続フランジ２７ａを接合して通水路２８と３０ｂとを重
合連通せしめる。そして回転装置９の回転に伴ってスベ
ル装置２１も連動回転し、被覆筒２５は一定の位置に固
定維持し、給水栓２６は一定位置に固定保持され、給水
栓２６から供給された水は空室２４から通水路２８と注
水パイプ３１を通って回転装置９の先端の通水路３０ａ
へ送水される。Flanges 2 provided at both ends of the rotating device 9
Water passages 30a, 30b are respectively formed in the holes 9a, 29b, and the water injection pipe 31 is connected to the water passages 30a, 30b of the flanges 29a, 29b. The connecting flange 27a of the swivel device 20 is joined to the flange 29b of the rotating device 9 to make the water passages 28 and 30b overlap and communicate. The svel device 21 also rotates in conjunction with the rotation of the rotating device 9, the coating cylinder 25 is fixed and maintained at a fixed position, the water tap 26 is fixed and held at a fixed position, and the water supplied from the water tap 26 is empty. From the chamber 24, through the water passage 28 and the water injection pipe 31, the water passage 30a at the tip of the rotating device 9
Water is sent to
【００１９】小口径の埋設管を敷設する一工程工法にお
いて、前記送水パイプはスクリュウコンベアの軸の外周
に備える羽根の推進方向側の付け根に沿ってつる巻き状
に巻つけたことにより、土圧によって羽根の回転力を減
少させることがなく、埋設管の推進力も確実に確保して
地盤の推進先端に注水する。そして測量用のタ−ゲット
の直視能力及び羽根の排土能力を低下させることなく注
水機構の設備を実現することにより、軟弱土、普通土は
いうまでもなく、硬質粘土や締まった砂土質の地盤に対
して小口径管の長距離推進を可能とする。In the one-step method for laying a small-diameter buried pipe, the water supply pipe is wound in a helical shape along the root on the propulsion direction side of the blade provided on the outer periphery of the shaft of the screw conveyer. By doing so, the rotating force of the blades is not reduced, and the propulsion of the buried pipe is ensured and water is injected into the propulsion tip of the ground. By realizing the water injection mechanism without lowering the direct-viewing ability of the survey target and the earth discharging ability of the blades, it is possible to use not only soft soil, ordinary soil, but also hard clay and tight sandy soil. It enables long-distance propulsion of small-diameter pipes to the ground.
【００２０】前記先頭管８及び水ベル装置２１は、必ず
しも前記の構造に形成する必要はなく、他の従来手段に
よりスクリュウコンベアの送水パイプに接続してもよい
ことはいうまでもない。It is needless to say that the head pipe 8 and the water bell device 21 do not necessarily need to be formed in the above-mentioned structure, but may be connected to the water supply pipe of the screw conveyor by other conventional means.
【００２１】[0021]
【発明の効果】本発明は上記のような構成であるから、
小口径の埋設管を敷設する一工程工法において、スクリ
ュウコンベアの軸の外周に備える羽根の推進方向側の付
け根に沿って注水パイプをつるまき状に設けて形成する
ことにより、測量器のタ−ゲットに対する直視能力及び
羽根の排土能力を低下させることなく注水機構の設備を
実現することにより、軟弱土、普通土はいうまでもな
く、硬質粘土や締まった砂土質の地盤に対して小口径管
の長距離推進を可能とし、しかも、注水パイプを羽根の
推進方向に面する側の付け根に設けることにより、土圧
の影響を受けることがないので、注水パイプをスクリュ
ウコンベアの軸の外周に設けたことにより推進能力を減
少させることもない等の利点がある。Since the present invention has the above configuration,
In a one-step method of laying a small-diameter buried pipe, a water injection pipe is provided in a helix shape along the root of the blade on the outer periphery of the screw conveyor shaft on the propulsion direction side, so that the surveying instrument has a By realizing the water injection mechanism without lowering the direct viewing ability to the get and the ability of the blades to discharge the soil, it is possible to reduce the diameter of hard clay and ordinary soil as well as hard clay and tight sandy soil. It enables long-distance propulsion of pipes, and since the water injection pipe is provided at the base on the side facing the direction of blade propulsion, it is not affected by earth pressure, so the water injection pipe can be mounted around the shaft of the screw conveyor. There is an advantage that the propulsion ability is not reduced by the provision.
【図１】本発明に使用する推進機の一例を示す概略図で
ある。FIG. 1 is a schematic view showing an example of a propulsion device used in the present invention.
【図２】本発明のスクリュウコンベアの正面図である。FIG. 2 is a front view of the screw conveyor of the present invention.
【図３】本発明のスクリュウコンベアの要部拡大断面図
である。FIG. 3 is an enlarged sectional view of a main part of the screw conveyor of the present invention.
【図４】本発明のスクリュウコンベアの両端の接続フラ
ンジを示す要部平面図である。FIG. 4 is a main part plan view showing connection flanges at both ends of the screw conveyor of the present invention.
【図５】本発明のスクリュウコンベアの側面図である。FIG. 5 is a side view of the screw conveyor of the present invention.
【図６】本発明の先頭管に接続するスクリュウコンベア
の一方の接続フランジを示す側面図である。FIG. 6 is a side view showing one connection flange of the screw conveyor connected to the leading pipe of the present invention.
【図７】本発明の先頭管の一部切欠して示す正面図であ
る。FIG. 7 is a partially cutaway front view of the leading tube of the present invention.
【図８】本発明の先頭管の要部平面図である。FIG. 8 is a plan view of a main part of the leading tube of the present invention.
【図９】本発明の回転装置にスイベル装置を接続して示
す縦断正面図である。FIG. 9 is a longitudinal sectional front view showing a swivel device connected to the rotating device of the present invention.
１ 推進機 ５ スクリュウコンベア ６ 埋設管 ７ タ−ゲット ８ 先頭管 ９ 回転装置 １０ 軸 １１ 羽根 １２ 送水パイプ １３ａ，１３ｂ、１３ｃ 接続フランジ １４ａ，１４ｂ 連通孔 １６ 接続フランジ １７ 連通孔 １８ 放水口 ２１ スイベル装置 ２２ 内筒 ２３ 外筒 ２４ 空室 ２５ 被覆筒 ２６ 給水栓 ２７ａ，１７ｂ 接続フランジ ２８ 通水路 ２９ａ，２９ｂ フランジ ３０ａ，３０ｂ 通水路 ３１ 注水パイプ DESCRIPTION OF SYMBOLS 1 Propulsion machine 5 Screw conveyor 6 Buried pipe 7 Target 8 Lead pipe 9 Rotating device 10 Shaft 11 Blade 12 Water supply pipe 13a, 13b, 13c Connection flange 14a, 14b Communication hole 16 Connection flange 17 Communication hole 18 Water outlet 21 Swivel device 22 Inner cylinder 23 Outer cylinder 24 Vacancy 25 Coated cylinder 26 Water tap 27a, 17b Connection flange 28 Water passage 29a, 29b Flange 30a, 30b Water passage 31 Water injection pipe
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭61−83799（ＪＰ，Ａ) 特開 平６−137055（ＪＰ，Ａ) 特開 平６−50087（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) F16L 1/024 B65G 33/14 E21D 9/12 ────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-61-83799 (JP, A) JP-A-6-137055 (JP, A) JP-A-6-50087 (JP, A) (58) Field (Int.Cl. 7 , DB name) F16L 1/024 B65G 33/14 E21D 9/12
Claims (3)
リュウコンベアを設けた埋設管を計画中心線に合わせて
最先となる前記スクリュウコンベアの先端に接続した先
頭管により所定距離まで突き押し推進して発進立坑と到
達立坑の間に埋設管を敷設する推進装置において、前記
スクリュウコンベアは両端を貫通する管軸になる軸の外
周に羽根をつる巻き状に巻つけ、このスクリュウコンベ
アは送水パイプを羽根の付け根に沿って巻つけて軸の外
周につる巻き状に設け、軸の両端に設けた接続フランジ
に前記送水パイプの両端を接続する連通孔を穿設して形
成したことを特徴とする非開削地中配管工法における推
進装置の注水機構。1. A buried pipe having a screw conveyor provided therein is pushed from a starting shaft by a propulsion device to a predetermined distance by a leading pipe connected to the tip of the screw conveyor which is the earliest in accordance with a planned center line. In a propulsion device for laying a buried pipe between a starting shaft and a reaching shaft, the screw conveyor winds a blade around a shaft that becomes a tube shaft penetrating both ends, and the screw conveyor uses a water supply pipe. It is wound along the root of the blade and provided in a helical shape around the outer periphery of the shaft, and formed in a connection flange provided at both ends of the shaft with a communication hole connecting both ends of the water supply pipe. Water injection mechanism of propulsion device in underground excavation method.
リュウコンベアを設けた埋設管を計画中心線に合わせて
最先となる前記スクリュウコンベアの先端に接続した先
頭管により所定距離まで突き押し推進して発進立坑と到
達立坑の間に埋設管を敷設する推進装置において、両端
を貫通する管軸になる軸の外周に羽根をつる巻き状に巻
つけ、送水パイプを羽根の付け根に沿って巻つけて軸の
外周につる巻き状に設けると共に軸の両端に設けた接続
フランジに前記送水パイプの両端を接続する連通孔を設
けて形成したスクリュウコンベアと、接続フランジの接
続面に設けた連通口からフランジの外周面に導通穿設し
た放水口を設け且つ先端を斜切し内部に測量用のタ−ゲ
ットを備えてなる先頭管と、スクリュウパイプの回転装
置にスベル装置を設けた推進装置とからなることを特徴
とする非開削地中配管工法における推進装置の注水機
構。2. A propulsion device pushes a buried pipe provided with a screw conveyor therein from a start shaft to a predetermined distance by a leading pipe connected to the tip of the screw conveyor, which is the earliest, in accordance with a planned center line. In a propulsion device that lays a buried pipe between the starting shaft and the reaching shaft, the blades are wound around the outer circumference of the shaft that passes through both ends, and the water supply pipe is wound along the root of the blade. A screw conveyor formed by providing a communication hole for connecting both ends of the water supply pipe to connection flanges provided at both ends of the shaft while being provided in a helical shape around the outer periphery of the shaft, and a communication port provided on a connection surface of the connection flange. A water discharge port with a conductive hole is provided on the outer peripheral surface of the flange, and a head pipe with a beveled tip and a target for measurement is provided inside the flange. A water injection mechanism for a propulsion device in a non-drilling underground piping method, comprising a girder propulsion device.
ュウコンベアを設けた埋設管を計画中心線に合わせて最
先となる前記スクリュウコンベアの先端に接続した先頭
管により所定距離まで突き押し推進して発進立坑と到達
立坑の間に埋設管を敷設する推進装置において、両端を
貫通する管軸になる軸の外周に羽根をつる巻き状に巻つ
け、送水パイプを羽根の付け根に沿って巻つけて軸の外
周につる巻き状に設けると共に軸の両端に接続フランジ
を設けてこの接続フランジに前記送水パイプの両端を接
続する連通孔を設けて形成したスクリュウコンベアと、
接続フランジの接続面に設けた連通孔からフランジの外
周面に導通穿設した放水口を設け且つ先端を斜切し内部
に測量用のタ−ゲットを備えてなる先頭管と、水蜜に重
合する内筒と外筒の間を一周する空室を設けると共に前
記空室に連通する給水栓を有する被覆筒を前記外筒に水
蜜に回転自在に設置し且つ前記空室から接続フランジの
側面に導通開口する通水路を設けて形成したスイベル装
置と、両端のフランジにそれぞれ通水路を貫通穿設して
注水パイプの両端を連通接続してなる回転装置に前記ス
イベル装置を互いの通水路を連通させて接続設置した推
進機とよりなることを特徴とする非開削地中配管工法に
おける推進装置の注水機構。3. A buried pipe having a screw conveyor provided therein is pushed from the starting shaft by a propulsion device to a predetermined distance by a leading pipe connected to the tip of the screw conveyor which is the earliest in accordance with the planned center line. In a propulsion device that lays a buried pipe between the starting shaft and the reaching shaft, the blades are wound around the outer circumference of the shaft that passes through both ends, and the water supply pipe is wound along the root of the blade. A screw conveyer formed by providing a connection flange at both ends of the shaft and providing a communication hole connecting both ends of the water supply pipe to the connection flange,
A water discharge port is formed through the communication hole provided in the connection surface of the connection flange on the outer peripheral surface of the flange, and a leading pipe provided with a bevel cut at the end and a target for measurement provided inside, and superimposed on water honey. An empty chamber surrounding the inner cylinder and the outer cylinder is provided, and a coating cylinder having a water tap connected to the empty chamber is rotatably mounted on the outer cylinder in the water honey, and is connected to the side surface of the connection flange from the empty chamber. The swivel device formed by providing an open water passage, and the rotating device formed by penetrating the water passage through the flanges at both ends and connecting the both ends of the water injection pipe to communicate the water passage with each other. A water injection mechanism for a propulsion device in a non-drilling underground piping method, comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26799795A JP3345738B2 (en) | 1995-09-22 | 1995-09-22 | Water injection mechanism of propulsion device in underground excavation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26799795A JP3345738B2 (en) | 1995-09-22 | 1995-09-22 | Water injection mechanism of propulsion device in underground excavation method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0989160A JPH0989160A (en) | 1997-03-31 |
| JP3345738B2 true JP3345738B2 (en) | 2002-11-18 |
Family
ID=17452484
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26799795A Expired - Fee Related JP3345738B2 (en) | 1995-09-22 | 1995-09-22 | Water injection mechanism of propulsion device in underground excavation method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3345738B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1295477A (en) * | 1998-03-31 | 2001-05-16 | 田边制药株式会社 | Preventives/remedies for urinary disorder |
-
1995
- 1995-09-22 JP JP26799795A patent/JP3345738B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0989160A (en) | 1997-03-31 |
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