JP2001049989A - Propulsion direction correcting device for boring machine - Google Patents
Propulsion direction correcting device for boring machineInfo
- Publication number
- JP2001049989A JP2001049989A JP22830699A JP22830699A JP2001049989A JP 2001049989 A JP2001049989 A JP 2001049989A JP 22830699 A JP22830699 A JP 22830699A JP 22830699 A JP22830699 A JP 22830699A JP 2001049989 A JP2001049989 A JP 2001049989A
- Authority
- JP
- Japan
- Prior art keywords
- propulsion
- pipe
- hydraulic
- inner pipe
- excavation
- 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
Landscapes
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、推進管を埋設す
るためのオーガ掘削方法における掘削推進機の推進方向
修正装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a propulsion direction correcting device for an excavator in an auger excavation method for burying a propulsion pipe.
【０００２】[0002]
【従来の技術】推進管の埋設方法の一つであるオーガ掘
削による地盤の掘削工法に際して、先端に刃先を備えた
ビットを回転しながら推進掘削し、同時に推進管を圧入
埋設する施工方法が行われている。この推進方法では施
工精度を確保するため推進方向或は推進位置の測定及び
推進方向修正方法を備えたものが優位であるので種々の
ものが提案されている。掘削される箇所の地盤の推進方
向の地質状況はある程度予測され、一般には一個の孔を
掘削するに必要な強度と寿命を持つ掘削ビットが用意さ
れて工事施工される。しかし、地質の状況が予想を越え
る場合には掘削ビットが傷み、交換を必要とする場合は
多々あったが、現実には工事途中で推進管を撤去せず掘
削ビットを取り替えることができる工法が少なく掘削ビ
ット等の装置を地中に放棄するか、別に立て坑を増設す
るなど地質状況に対応した計画変更を余儀なくされる場
合があった。2. Description of the Related Art When excavating a ground by auger excavation, which is one of the methods for burying a propulsion pipe, a construction method is performed in which a propulsion excavation is performed while rotating a bit having a cutting edge at the tip, and at the same time, the propulsion pipe is press-fitted and buried. Have been In this propulsion method, various methods have been proposed because a method provided with a method of measuring a propulsion direction or a propulsion position and correcting the propulsion direction is advantageous in order to secure construction accuracy. The geological condition of the ground to be excavated in the propulsion direction of the ground is predicted to some extent, and in general, a drill bit having the strength and life required to excavate one hole is prepared and construction is performed. However, when the geological condition exceeded expectations, the drill bit was damaged and needed to be replaced in many cases.In practice, there is a construction method that can replace the drill bit without removing the propulsion pipe during construction. In some cases, it was necessary to abandon equipment such as excavation bits underground or to add a vertical shaft to change the plan according to the geological situation.
【０００３】[0003]
【発明が解決しようとする課題】この発明は、前記のよ
うな問題点を同時に解決するもので、比較的大径の推進
管を高精度に長距離施工を行うことが可能な掘削推進機
の推進方向修正装置を提供するものである。また、この
発明の課題は、掘削工事途中での推進管の推進方向の修
正を簡易にできる掘削推進機の推進方向修正装置を提供
するものである。SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems at the same time. The present invention relates to an excavation propulsion machine capable of performing a relatively large-diameter propulsion pipe with high precision over a long distance. A propulsion direction correcting device is provided. Another object of the present invention is to provide a propulsion direction correcting device of an excavation propulsion machine that can easily correct the propulsion direction of a propulsion pipe during excavation work.
【０００４】[0004]
【課題を解決するための手段】この発明は、前記課題を
達成するために以下の構成としたものである。オーガ掘
削により推進管を埋設する推進工法において、推進管と
この内側に配置した内管とからなり、この内管内に回転
自在に配置した掘削用のスクリューオーガを配置し、こ
のスクリューオーガの先端に掘削ビットを備えるととも
にこの掘削ビットの周縁部に、掘削回転時に推進管の外
径にまで拡がり、この逆回転のときには径を縮小する複
数の拡孔ビットを回動可能に備えてなり、このスクリュ
ーオーガを回転させながら地盤を掘削する掘削推進機に
おいて、 外部から油圧を供給する複数の油圧管を前記
推進管と前記内管との間に配設し、それぞれの油圧管は
前記内管先端の内管シューに固定した複数の油圧ジャッ
キを接続し、この油圧ジャッキの操作杆は前記推進管の
先端シューの後部のジャッキ受け台に当接させ、前記内
管を反力としてそれぞれの前記油圧ジャッキの作動によ
り前記推進管の先端シューに傾きを与えることにより前
記推進管の推進方向を修正する構成である。The present invention has the following configuration to achieve the above object. In a propulsion method in which a propulsion pipe is buried by auger excavation, the propulsion pipe consists of a propulsion pipe and an inner pipe disposed inside the propulsion pipe, and a screw auger for excavation that is rotatably disposed in the inner pipe is disposed. Along with the drilling bit, a plurality of hole-expanding bits that expand to the outer diameter of the propulsion pipe at the time of drilling rotation and reduce the diameter at the time of the reverse rotation are rotatably provided on the periphery of the drilling bit, In an excavation propulsion machine that excavates the ground while rotating an auger, a plurality of hydraulic pipes for supplying hydraulic pressure from the outside are disposed between the propulsion pipe and the inner pipe, and each hydraulic pipe is provided at a tip of the inner pipe. A plurality of hydraulic jacks fixed to the inner pipe shoe are connected, and the operating rod of this hydraulic jack is brought into contact with a jack cradle at the rear of the tip shoe of the propulsion pipe, and the inner pipe is subjected to a reaction force. The propulsion direction of the propulsion pipe is corrected by tilting the tip shoe of the propulsion pipe by operating each of the hydraulic jacks.
【０００５】また、前記拡孔ビットの外径の拡縮と前記
油圧ジャッキの操作杆のみ推進管の先端シュー後部のジ
ャッキ受け台に当接させ、前記推進管の先端シューと前
記内管シューは可撓性のシールによる嵌め合わせとした
ので、目的工事終了のときまたは掘削ビットの交換のと
き推進管を地中に存置して掘削ビット及び前記油圧ジャ
ッキを撤収または再作業続行できることを特徴とする請
求項１に記載の掘削推進機の推進方向修正装置の構成に
よって前記課題は達成できる。In addition, the outer diameter of the hole expanding bit is expanded and contracted, and only the operating rod of the hydraulic jack is brought into contact with the jack cradle at the rear of the tip shoe of the propulsion pipe. Since the fitting is performed by using a flexible seal, the propulsion pipe can be kept underground at the end of the target work or when the drill bit is replaced, so that the drill bit and the hydraulic jack can be withdrawn or re-worked. The above object can be achieved by the configuration of the propulsion direction correcting device of the excavation propulsion machine according to item 1.
【０００６】この発明の掘削推進機の推進方向修正装置
は、発進坑側に設けた制御装置を操作し、内管内に配設
したスクリューオーガの回転で、掘削ビットによる掘削
施工中であっても発進坑側に設けた油圧供給装置を始動
して油圧管を経由して油圧を調整し、先端に複数設けた
各方向の方向修正用ジャッキを稼働させて所定の推進管
の先端シューの傾斜角度を調整して推進管、スクリュー
オーガ等の進行方向を簡易に修正して推進することがで
き、推進精度をあげることができる。The propulsion direction correcting device for an excavation propulsion machine according to the present invention operates a control device provided on the starting pit side to rotate a screw auger disposed in an inner pipe, thereby performing excavation by a drill bit. Starting the hydraulic supply device provided on the starting pit side, adjusting the hydraulic pressure via the hydraulic pipe, operating a plurality of direction correcting jacks provided at the tip to tilt the inclination angle of the tip shoe of the predetermined propulsion pipe Can be adjusted to easily correct the traveling direction of the propulsion tube, screw auger, or the like, and the propulsion can be performed, and the propulsion accuracy can be increased.
【０００７】また、工事中に掘削ビットの交換を必要と
するときは、スクリューオーガを逆転して掘削ビットの
拡孔部の径を縮小してビット全体を推進管の直径より小
さくし、内管内に掘削ビットを収納して発進坑側に内管
と共に掘削ビットを容易に回収することができる。When the drill bit needs to be replaced during the construction, the screw auger is reversed to reduce the diameter of the hole of the drill bit so that the entire bit is smaller than the diameter of the propulsion pipe. The drill bit can be stored in the pit, and the drill bit can be easily collected together with the inner pipe on the starting pit side.
【０００８】この発明の掘削推進機の推進方向修正装置
は、推進管の先端シューを方向修正用ジャッキによって
簡易に操作することができ、かつ、先端シューと内管シ
ューとの間に可撓性の接点シールを配置してあるから先
端シューの曲がりを容易にし、かつ揺動によっても内管
内に砂等が侵入するおそれがなく支障をきたすことがな
い。In the propulsion direction correcting device for an excavating propulsion machine according to the present invention, the tip shoe of the propulsion pipe can be easily operated by the jack for correcting the direction, and the flexible shoe is provided between the tip shoe and the inner pipe shoe. Since the contact seal is disposed, the tip shoe can be easily bent, and there is no danger that sand or the like may enter the inner tube even by swinging, so that no trouble is caused.
【０００９】[0009]
【発明の実施の形態】以下この発明の掘削推進機の推進
方向修正装置を図面に示す実施の形態において説明す
る。図１はこの発明の推進方向修正装置の実施の形態を
示す大要説明図である。図２は図１の推進方向修正装置
を先端に備えた掘削推進機の駆動部を説明する発進立坑
側面図である。図３は、この発明に採用する掘削ビット
の実施の形態の正面図である。図４は図１のＡ−Ａ線断
面図である。図５は図１のＢ−Ｂ線断面図である。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing an apparatus for correcting a propulsion direction of an excavator according to the present invention. FIG. 1 is a schematic explanatory view showing an embodiment of a propulsion direction correcting device according to the present invention. FIG. 2 is a side view of a starting shaft illustrating a drive unit of an excavation propulsion machine having the propulsion direction correcting device of FIG. FIG. 3 is a front view of an embodiment of a drill bit used in the present invention. FIG. 4 is a sectional view taken along line AA of FIG. FIG. 5 is a sectional view taken along line BB of FIG.
【００１０】図１において、掘削ビット１０を備えたス
クリューオーガ１１を内管２内に回転自在に遊嵌してあ
る。この内管２の外側に推進管１が配置され、この内管
２と推進管１との間の隙間に発進坑側から油圧を供給す
る油圧管２０が配管されており、ジャッキ取付台８の円
周方向に沿って、円周等分割に４か所に方向修正用ジャ
ッキ３，３・・が配備してある。この各方向修正用ジャ
ッキ３の操作杆３ａが推進管１の先端に揺動自在に軸支
した先端シュー７のジャッキ受け台６に当接してある。
この特定の方向修正用ジャッキ３を動作して操作杆３ａ
の動作により先端シュー７は傾斜するようになってお
り、この先端シュー７の内側に接点シール１９を介在さ
せて内管シュー９が嵌合してある。Referring to FIG. 1, a screw auger 11 having a drill bit 10 is rotatably loosely fitted into an inner tube 2. A propulsion pipe 1 is disposed outside the inner pipe 2, and a hydraulic pipe 20 for supplying hydraulic pressure from the starting pit side is provided in a gap between the inner pipe 2 and the propulsion pipe 1. Along the circumferential direction, jacks 3, 3,... The operating rod 3a of each direction correcting jack 3 is in contact with a jack receiving base 6 of a tip shoe 7 pivotally supported at the tip of the propulsion pipe 1.
The specific direction correcting jack 3 is operated to operate the operating rod 3a.
The tip shoe 7 is inclined by the above operation, and the inner pipe shoe 9 is fitted inside the tip shoe 7 with the contact seal 19 interposed therebetween.
【００１１】スクリューオーガ１１の掘削ビット１０の
位置を監視するためにＬＥＤ発光体を内蔵したターゲッ
ト１８が埋設してある。掘削ビット１０には放射状に掘
削用の多数の刃先を備え、この周縁部分に掘削回転方向
に回転するときは回動して拡がる拡孔ビットを備えたビ
ット拡孔部１０ａが複数軸着してあり、掘削方向と逆方
向に回転するときはビット拡孔部１０ａが掘削ビット１
０の径を縮小する方向に回動する。スクリューオーガ１
１、内管２及び推進管１は発進坑側においてベース１３
上に支持され、これら内管２等はその後端部においてア
ダプター１４を介して回転部１６に連結してあり、この
回転部１６はオーガ駆動用原動機１５に連動してある。
この回転部１６の後端には前記ターゲット１８を観測し
て推進孔の推進方向を視準するトランシット１７が配置
してある。In order to monitor the position of the drill bit 10 of the screw auger 11, a target 18 having a built-in LED light emitter is embedded. The drill bit 10 is provided with a number of cutting edges for drilling radially, and a plurality of bit expanding portions 10a having a hole expanding bit that rotates and expands when rotating in the peripheral direction around the peripheral portion. When rotating in the direction opposite to the digging direction, the bit expanding portion 10a
It rotates in the direction to reduce the diameter of 0. Screw auger 1
1, the inner pipe 2 and the propulsion pipe 1 have a base 13 on the starting pit side.
The inner tube 2 and the like are supported at the rear end thereof by an adapter 14 and connected to a rotating unit 16. The rotating unit 16 is linked to the auger driving motor 15.
A transit 17 for observing the target 18 and collimating the propulsion direction of the propulsion hole is disposed at the rear end of the rotating portion 16.
【００１２】このように構成されている掘削推進機の推
進方向修正装置について動作を説明する。所定の長さの
推進管１に内管２を挿入し、ジャッキ取付台８に方向修
正用ジャッキ３を取付ける。このとき推進管１の先端シ
ュー７の推進方向を正確に定めて取付ける。次に、内管
２内にスクリューオーガ１１を挿入し、先端に掘削ビッ
ト１０を取付ける。ベース１３上に載置した図示しない
推進装置を動作し、掘削予定地の地盤の表面に、スクリ
ューオーガ１１に取り付けた掘削ビット１０の掘削面を
接触させる。The operation of the device for correcting the direction of propulsion of the excavator constructed as described above will be described. The inner pipe 2 is inserted into the propulsion pipe 1 having a predetermined length, and the jack 3 for direction correction is mounted on the jack mounting base 8. At this time, the propulsion direction of the tip shoe 7 of the propulsion pipe 1 is accurately determined and attached. Next, the screw auger 11 is inserted into the inner pipe 2, and the drill bit 10 is attached to the tip. The propulsion device (not shown) mounted on the base 13 is operated to bring the excavation surface of the excavation bit 10 attached to the screw auger 11 into contact with the surface of the ground at the excavation site.
【００１３】オーガ駆動用原動機１５を稼働すると、内
管２内において回転部１６を介してスクリューオーガ１
１が図３の反時計方向に回転して掘削ビット１０が回転
し掘削を開始する。推進管１と内管２との間にはキャス
タ１２が配置してあって両者の間隔は一定に維持され、
ほぼ同心円状に配置され、推進管１内に内管２の挿入が
円滑に行えるようになっている。When the auger driving motor 15 is operated, the screw auger 1 is
1 rotates counterclockwise in FIG. 3 and the drill bit 10 rotates to start drilling. Casters 12 are arranged between the propulsion pipe 1 and the inner pipe 2 so that the distance between them is kept constant.
The inner tubes 2 are arranged substantially concentrically so that the inner tube 2 can be smoothly inserted into the propulsion tube 1.
【００１４】スクリューオーガ１１の回転に伴い掘削ビ
ット１０はビット拡孔部１０ａが拡径した状態で推進管
１前方の地盤を掘削し、スクリューオーガ１１は掘削さ
れた土砂を連続したスパイラル状のオーガブレードによ
り後方の推進機まで押し出し、掘削された空間に推進管
１が図示しない推進機より地盤の摩擦抵抗に打ち勝つ推
進力が付与され、推進管１は地中に推進される。この推
進方向はトランシット１７によってターゲット１８を常
に監視しながら掘削推進する。孔曲りを生じたときには
修正を行う方向を定め、その方向の反対側に位置する方
向修正用ジャッキ３に油圧管２０を通して油圧を供給
し、方向修正用ジャッキ３を動作させて操作杆３ａによ
り推進管１の進行と、方向修正をつかさどる先端シュー
７後部のジャッキ受け台６を介して先端シュー７の傾斜
を調整して孔曲りに対処しながら掘削推進することがで
きる。With the rotation of the screw auger 11, the excavating bit 10 excavates the ground in front of the propulsion pipe 1 in a state where the bit enlarging portion 10a is enlarged. The blade extrudes to the rear propulsion machine, and a propulsion force for overcoming the frictional resistance of the ground is given to the excavated space by the propulsion pipe 1 from a propulsion machine (not shown), and the propulsion pipe 1 is propelled underground. In this propulsion direction, excavation propulsion is performed while the target 18 is constantly monitored by the transit 17. When the hole is bent, the direction of the correction is determined, the hydraulic pressure is supplied through the hydraulic pipe 20 to the direction correcting jack 3 located on the opposite side of the direction, and the direction correcting jack 3 is operated to be propelled by the operating rod 3a. Excavation can be promoted while adjusting the inclination of the tip shoe 7 through the jack cradle 6 at the rear of the tip shoe 7 which controls the progress of the pipe 1 and the direction correction.
【００１５】この推進時に先端シュー７と内管シュー９
との間に接点シール１９が介在してあるから推進中に砂
塵等が推進管１と内管２との間に侵入することがない。
推進管１と先端シュー７との接続部分にはシール部材１
９が介在しシール保護リング５を周回してあるので先端
シュー７の動きに支障を生じることなく、作動させるこ
とができる。At the time of this propulsion, the tip shoe 7 and the inner pipe shoe 9
Because the contact seal 19 is interposed between the propulsion pipe 1 and the inner pipe 2 during the propulsion.
The connecting portion between the propulsion pipe 1 and the tip shoe 7 has a sealing member 1
Since the seal protection ring 5 is interposed and interposed around the seal protection ring 5, the tip shoe 7 can be operated without any trouble.
【００１６】この発明の掘削推進機の推進は、推進の方
向精度を監視しながら、必要なときには方向修正を行い
ながら施工され、ベース１３上の推進機が移動するスト
ロークを推進し終わるとオーガ駆動用原動機１５と図示
しない推進機はアダプター１４及び回転部１６の前方へ
の連結を解き、ベース１３上を後方に移動する。新しい
推進管１、内管２、スクリューオーガ１１及び油圧管２
０が供給され、まず、前方の同種のものと連結され、そ
の後に推進機とアダプター１４及び回転部１６により接
続された後に改めて推進が行われる。新しい管類の追加
と推進のサイクルは所定の深度に達するまで繰り返され
る。The propulsion of the excavating propulsion device of the present invention is carried out while monitoring the accuracy of the propulsion direction while correcting the direction when necessary. When the propulsion device on the base 13 completes the propulsion of the moving stroke, the auger drive is performed. The prime mover 15 and the propulsion unit (not shown) release the connection of the adapter 14 and the rotating unit 16 to the front, and move rearward on the base 13. New propulsion pipe 1, inner pipe 2, screw auger 11, and hydraulic pipe 2
0 is supplied, first connected to the same thing in the front, and then the propulsion is performed again after being connected to the propulsion device by the adapter 14 and the rotating unit 16. The cycle of adding and propelling new tubing is repeated until a predetermined depth is reached.
【００１７】この発明の掘削推進機の推進される地盤の
地質状況が予測された状態ではなく、掘削ビット１０を
取り替える必要が生じた場合、ビット拡孔部１０ａをス
クリューオーガ１１及び回転部１６を通じてオーガ駆動
用原動機１５の逆転により先端シュー７の最小内径より
小さく縮径し、推進管１、先端シュー７、シール保護リ
ング５を残して内管シュー９、接点シール１９、方向修
正用ジャッキ３、ジャッキ取付台８、内管２及び油圧管
２０をスクリューオーガ１１及び掘削ビット１０ととも
に発進立坑側へ引き抜き、掘削ビット１０を取り替えて
改めて推進管１の内部に挿入して掘削位置に戻すことが
できる。推進作業が完了した後も推進管と先端シュ−７
及びシール保護リング５を残してすべての器具は発進立
坑側に回収することができる。When the geological condition of the ground to be propelled by the excavator of the present invention is not in a predicted state and it is necessary to replace the excavating bit 10, the bit expanding portion 10 a is moved through the screw auger 11 and the rotating portion 16. Due to the reverse rotation of the auger driving motor 15, the diameter is reduced to be smaller than the minimum inner diameter of the tip shoe 7, and the inner pipe shoe 9, the contact seal 19, the direction correcting jack 3, leaving the propulsion tube 1, the tip shoe 7, and the seal protection ring 5, The jack mount 8, the inner pipe 2, and the hydraulic pipe 20 can be pulled out together with the screw auger 11 and the drill bit 10 to the starting shaft side, and the drill bit 10 can be replaced and inserted again into the propulsion pipe 1 to return to the drilling position. . After the propulsion work is completed, the propulsion pipe and tip
And all the instruments except the seal protection ring 5 can be recovered to the starting shaft side.
【００１８】[0018]
【発明の効果】この発明の掘削推進機の推進方向修正装
置は、推進管の先端に取付けたシューの傾斜角度を調整
する方向修正用ジャッキを推進管内に配置したから掘削
施工中でも容易に推進管の推進方向を修正することがで
き、高い施工精度を保持するすることができる。また、
必要に応じ外管を撤収することなく装置の撤収や掘削ビ
ットの交換ができるので、掘削ビットの消耗が予測され
る硬質な地盤等において長距離推進も可能となった。According to the propulsion direction correcting device of the present invention, the jack for correcting the direction of inclination of the shoe attached to the tip of the propulsion pipe is arranged in the propulsion pipe. Can be corrected, and high construction accuracy can be maintained. Also,
If necessary, the equipment can be withdrawn and the drill bit can be replaced without having to withdraw the outer pipe, so long-distance propulsion on hard ground where drill bit wear is expected can be achieved.
【図１】この発明の掘削推進機の推進方向修正装置の実
施の形態を示す大要説明図であるFIG. 1 is a schematic explanatory view showing an embodiment of a propulsion direction correcting device of an excavation propulsion machine according to the present invention.
【図２】図１の推進方向修正装置を先端に備えた掘削推
進機の駆動部を説明する発進立坑側面図である。FIG. 2 is a side view of a starting shaft illustrating a driving unit of an excavation propulsion machine having the propulsion direction correcting device of FIG.
【図３】この発明に採用する掘削ビットの実施の形態の
正面図である。FIG. 3 is a front view of an embodiment of a drill bit used in the present invention.
【図４】図１のＡ−Ａ線断面図である。FIG. 4 is a sectional view taken along line AA of FIG. 1;
【図５】図１のＢ−Ｂ線断面図である。FIG. 5 is a sectional view taken along line BB of FIG. 1;
１ 推進管 ２ 内管 ３ 方向修正用ジャッキ ３ａ 操作杆 ４ シール ５ シール保護リング ６ ジャッキ受け台 ７ 先端シュー ８ ジャッキ取付台 ９ 内管シュー １０ 掘削ビット １０ａ ビット拡孔部 １１ スクリューオーガ １２ キャスター １３ ベース １４ アダプター １５ オーガ駆動用原動機 １６ 回転部 １７ トランシット １８ ターゲット １９ 接点シール ２０ 油圧管 DESCRIPTION OF SYMBOLS 1 Propulsion pipe 2 Inner pipe 3 Jack for direction correction 3a Operating rod 4 Seal 5 Seal protection ring 6 Jack pedestal 7 Tip shoe 8 Jack mounting base 9 Inner pipe shoe 10 Drilling bit 10a Bit expanding part 11 Screw auger 12 Caster 13 Base 14 Adapter 15 Auger drive motor 16 Rotating part 17 Transit 18 Target 19 Contact seal 20 Hydraulic pipe
───────────────────────────────────────────────────── フロントページの続き (72)発明者 林 靖 東京都新宿区西新宿１丁目25番１号 大成 建設株式会社内 (72)発明者 永野 勝昭 福岡県福岡市博多区上月隈用中633番地 東邦地下工機株式会社内 (72)発明者 富田 定 福岡県福岡市博多区上月隈用中633番地 東邦地下工機株式会社内 Ｆターム(参考） 2D054 AA02 AC18 BA14 DA03 GA04 GA34 GA42 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Yasushi Hayashi In Taisei Construction Co., Ltd. 1-25-1 Nishi-Shinjuku, Shinjuku-ku, Tokyo (72) Katsuaki Nagano 633 Nakagami, Kamizukikuma, Hakata-ku, Fukuoka, Fukuoka Inside Toho Underground Machine Co., Ltd.
Claims (2)
法において、推進管とこの内側に配置した内管とからな
り、この内管内に回転自在に配置した掘削用のスクリュ
ーオーガを配置し、このスクリューオーガの先端に掘削
ビットを備えるとともにこの掘削ビットの周縁部に、掘
削回転時に推進管の外径にまで拡がり、この逆回転のと
きには径を縮小する複数の拡孔ビットを回動可能に備え
てなり、このスクリューオーガを回転させながら地盤を
掘削する掘削推進機において、 外部から油圧を供給する複数の油圧管を前記推進管と前
記内管との間に配設し、それぞれの油圧管は前記内管先
端の内管シューに固定した複数の油圧ジャッキを接続
し、この油圧ジャッキの操作杆は前記推進管の先端シュ
ーの後部のジャッキ受け台に当接させ、前記内管を反力
としてそれぞれの前記油圧ジャッキの作動により前記推
進管の先端シューに傾きを与えることにより前記推進管
の推進方向を修正することを特徴とする掘削推進機の推
進方向修正装置。In a propulsion method in which a propulsion pipe is buried by auger excavation, a propulsion pipe and an inner pipe disposed inside the propulsion pipe are provided, and a screw auger for excavation rotatably disposed in the inner pipe is disposed. A drill bit is provided at the tip of the screw auger, and a plurality of drill bits are rotatably provided on the periphery of the drill bit, which extend to the outer diameter of the propulsion pipe during drilling rotation and reduce the diameter during reverse rotation. In a drilling propulsion machine that excavates the ground while rotating the screw auger, a plurality of hydraulic pipes for supplying hydraulic pressure from outside are arranged between the propulsion pipe and the inner pipe, and each hydraulic pipe is A plurality of hydraulic jacks fixed to the inner pipe shoe at the tip of the inner pipe are connected, and the operating rod of the hydraulic jack is brought into contact with a jack cradle at the rear of the tip shoe of the propulsion pipe, A propulsion direction correcting device for an excavating propulsion machine, wherein the propulsion direction of the propulsion pipe is corrected by tilting the tip shoe of the propulsion pipe by operating each of the hydraulic jacks using the inner pipe as a reaction force.
ャッキの操作杆のみ推進管の先端シュー後部のジャッキ
受け台に当接させ、前記推進管の先端シューと前記内管
シューは可撓性のシールによる嵌め合わせとしたので、
目的工事終了のときまたは掘削ビットの交換のとき推進
管を地中に存置して掘削ビット及び前記油圧ジャッキを
撤収または再作業続行できることを特徴とする請求項１
に記載の掘削推進機の推進方向修正装置。2. The expansion and contraction of the outer diameter of the hole-expanding bit and the operation rod of the hydraulic jack only contact the jack cradle at the rear of the tip shoe of the propulsion tube. Since it was fitted with a flexible seal,
2. The drilling bit and the hydraulic jack can be withdrawn or re-operated while the propulsion pipe is kept underground at the time of completion of the construction or replacement of the drilling bit.
A propulsion direction correcting device for an excavation propulsion machine according to item 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22830699A JP3399514B2 (en) | 1999-08-12 | 1999-08-12 | Drilling propulsion direction correction device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22830699A JP3399514B2 (en) | 1999-08-12 | 1999-08-12 | Drilling propulsion direction correction device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2001049989A true JP2001049989A (en) | 2001-02-20 |
| JP3399514B2 JP3399514B2 (en) | 2003-04-21 |
Family
ID=16874384
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22830699A Expired - Fee Related JP3399514B2 (en) | 1999-08-12 | 1999-08-12 | Drilling propulsion direction correction device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3399514B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006328729A (en) * | 2005-05-25 | 2006-12-07 | East Japan Railway Co | Underground jacking device |
| JP2007205048A (en) * | 2006-02-02 | 2007-08-16 | Sanwa Kizai Co Ltd | Rectangular cross section boring machine |
| US20110209921A1 (en) * | 2010-02-26 | 2011-09-01 | Barbera James S | Collapsible rock head and associated structure |
| KR101498143B1 (en) * | 2013-06-26 | 2015-03-04 | 다주건설 (주) | Horizontal well drilling device having light wave device |
| KR20200017228A (en) * | 2018-08-08 | 2020-02-18 | 주식회사경도 | Nonuniform Tunnel Construction Device by Combining Casing and Support Panel and Method Using It |
-
1999
- 1999-08-12 JP JP22830699A patent/JP3399514B2/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006328729A (en) * | 2005-05-25 | 2006-12-07 | East Japan Railway Co | Underground jacking device |
| JP2007205048A (en) * | 2006-02-02 | 2007-08-16 | Sanwa Kizai Co Ltd | Rectangular cross section boring machine |
| JP4562662B2 (en) * | 2006-02-02 | 2010-10-13 | 三和機材株式会社 | Rectangular cross-section machine |
| US20110209921A1 (en) * | 2010-02-26 | 2011-09-01 | Barbera James S | Collapsible rock head and associated structure |
| US8567530B2 (en) * | 2010-02-26 | 2013-10-29 | James S. Barbera | Collapsible rock head and associated structure |
| KR101498143B1 (en) * | 2013-06-26 | 2015-03-04 | 다주건설 (주) | Horizontal well drilling device having light wave device |
| KR20200017228A (en) * | 2018-08-08 | 2020-02-18 | 주식회사경도 | Nonuniform Tunnel Construction Device by Combining Casing and Support Panel and Method Using It |
| KR102179278B1 (en) * | 2018-08-08 | 2020-11-16 | 주식회사경도 | Nonuniform Tunnel Construction Device by Combining Casing and Support Panel and Method Using It |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3399514B2 (en) | 2003-04-21 |
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