JP2688227B2 - Excavator for propulsion method - Google Patents
Excavator for propulsion methodInfo
- Publication number
- JP2688227B2 JP2688227B2 JP63314260A JP31426088A JP2688227B2 JP 2688227 B2 JP2688227 B2 JP 2688227B2 JP 63314260 A JP63314260 A JP 63314260A JP 31426088 A JP31426088 A JP 31426088A JP 2688227 B2 JP2688227 B2 JP 2688227B2
- Authority
- JP
- Japan
- Prior art keywords
- propulsion
- piston
- excavation
- propulsion head
- excavator
- 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
- 238000000034 method Methods 0.000 title claims description 6
- 238000009412 basement excavation Methods 0.000 claims description 34
- 238000006243 chemical reaction Methods 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
- 239000002689 soil Substances 0.000 description 5
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/04—Directional drilling
- E21B7/06—Deflecting the direction of boreholes
- E21B7/065—Deflecting the direction of boreholes using oriented fluid jets
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/18—Drilling by liquid or gas jets, with or without entrained pellets
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、小口径の地中穴を掘削するのに好適なもの
として、推進ヘッド本体の先端側に、その中心軸芯周り
に回転自在に掘削部を設け、前記掘削部を回転操作する
操作装置を、前記推進ヘッド本体と前記掘削部とにわた
って設け、前記操作装置は、前記軸芯に沿って往復移動
するピストンと、前記軸芯に沿った方向の前記ピストン
の移動を、前記軸芯周りの回転に変換して前記掘削部に
伝える操作力変換機構とを備え、前記推進ヘッド本体を
地中推進させるに伴って土圧を受ける受圧面を前記掘削
部に設け、前記受圧面を先端側ほど前記軸芯に近接する
傾斜面に形成してある推進工法用掘削機に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention is suitable for excavating a small-diameter underground hole, and is rotatable around the central axis of the propulsion head body at the tip side thereof. An operating device for rotating the excavating portion is provided on the propulsion head main body and the excavating portion, and the operating device includes a piston that reciprocates along the axial center and the axial center. And a manipulating force converting mechanism that converts the movement of the piston in the direction along with the rotation around the axis and transmits the rotation to the excavating unit, and receives earth pressure as the propulsion head body is propelled underground. The present invention relates to an excavator for a propulsion method, in which a surface is provided in the excavation portion, and the pressure receiving surface is formed as an inclined surface closer to the shaft core toward the tip end side.
従来の上記掘削機は、第４図に示すように、ピストン
（14）に掘削部（1B）を一体連設すると共に、そのピス
トン（14）を推進ヘッド本体（1A）に対して往復移動自
在に取付けてあった（例えば特開昭59−161596号公
報）。In the conventional excavator, as shown in FIG. 4, the excavation part (1B) is integrally connected to the piston (14), and the piston (14) is reciprocally movable with respect to the propulsion head body (1A). It was attached to (for example, JP-A-59-161596).
そこで、一般に、掘削部を回転させながら掘削機を所
定位置まで直進させた後、その所定位置から一定方向に
旋回させながら推進させる時に、受圧面（Ｆ）を旋回方
向とは反対側に向けた姿勢に保持しながら掘削機を押圧
しなければならず、この時、前記従来の掘削機では、ピ
ストン（14）の移動に伴って、掘削部（1B）が推進ヘッ
ド本体（1A）に対して、その中心軸芯周りに回転しなが
ら出退移動するために、掘削部（1B）を回転させて受圧
面（Ｆ）を所定向きになるように方向修正すると、掘削
部（1B）の位置が前後に移動してしまい、掘削機の旋回
開始位置を決めるのが困難であるという欠点があった。Therefore, generally, when the excavator is moved straight to a predetermined position while rotating the excavation unit and then propelled while being swung in a certain direction from the predetermined position, the pressure receiving surface (F) is directed to the side opposite to the turning direction. It is necessary to press the excavator while maintaining the posture. At this time, in the conventional excavator, as the piston (14) moves, the excavation part (1B) moves against the propulsion head body (1A). , In order to move back and forth while rotating around its central axis, when the excavation part (1B) is rotated and the direction of the pressure receiving surface (F) is adjusted to a predetermined direction, the position of the excavation part (1B) is changed. There was a drawback that it was difficult to determine the turning start position of the excavator because it moved back and forth.
本発明の目的は、掘削機を所定位置からの旋回推進を
容易にできるようにする点にある。An object of the present invention is to facilitate excavator turning propulsion from a predetermined position.
本発明の推進工法用掘削機の特徴構成は掘削部を、推
進ヘッド本体に対して軸芯周りに回転のみ許容する状態
で取付け、ピストンを、前記推進ヘッド本体と前記掘削
部とに対して往復移動自在に取付けてあることにあり、
その作用効果は、次の通りである。The characteristic construction of the excavator for the propulsion method of the present invention is that the excavation part is attached to the propulsion head main body in a state in which only rotation about the axis is allowed, and the piston reciprocates with respect to the propulsion head main body and the excavation part. It is attached so that it can move freely,
The operation and effect are as follows.
つまり、推進ヘッド本体と掘削部とに対してピストン
を移動させると、ヘッド本体に対して軸芯周りに回転の
み許容する状態に取付けてある掘削部は、操作力変換機
構によって回転させられて、従来のように推進ヘッド本
体に対して出退移動しないために、所定位置から掘削機
を旋回推進させる場合には、掘削機を所定位置に停止さ
せた後に、受圧面が旋回方向とは反対側に向くように、
ピストンを移動させて掘削部を回転させるだけでよい。That is, when the piston is moved with respect to the propulsion head main body and the excavation unit, the excavation unit attached to the head main body in a state where only rotation about the axis is allowed to rotate by the operation force conversion mechanism, In order to prevent the excavator from turning back and forth with respect to the propulsion head body as in the conventional case, when the excavator is turned and propelled from a predetermined position, after the excavator is stopped at the predetermined position, the pressure receiving surface is opposite to the turning direction. To face
All that is required is to move the piston and rotate the excavation section.
従って、掘削機の旋回開始位置を決めやすいために、
正確に予定の掘削経路を推進させやすく、より複雑な地
形であっても、良好に推進作業を行えるようになった。Therefore, because it is easy to determine the turning start position of the excavator,
It is easy to accurately drive the planned excavation route, and it is now possible to perform good propulsion work even in more complicated terrain.
その上、掘削部の回転操作と、掘削部の推進操作とを
各別に行えるために、掘削機を直進させる時に、掘削部
及び推進ヘッド本体を前進させながら、掘削部を推進ヘ
ッド本体に対して軸芯周りに右回転操作と左回転操作を
交互に行うことによって、掘削機の推進方向を曲げるこ
となく直線方向に維持することができ、直進時の推進性
能を高度に維持できるようになった。Moreover, since the rotating operation of the excavation unit and the propulsion operation of the excavation unit can be performed separately, the excavation unit and the propulsion head main body are moved forward while the excavation unit is moved straight ahead of the excavation unit with respect to the propulsion head main body. By alternating the clockwise and counterclockwise rotations around the axis, the propulsion direction of the excavator can be maintained in a straight direction without bending, and the propulsion performance when traveling straight can be maintained at a high level. .
次に、本発明の実施例を、図面に基づいて説明する。 Next, embodiments of the present invention will be described with reference to the drawings.
第２図に示すように、屈曲自在に複数接続された推進
管（２）に対し、その先端側に推進用ヘッド（１）を接
続して推進工法用掘削機を構成してある。As shown in FIG. 2, the propulsion head (1) is connected to the tip side of the propulsion pipes (2) that are flexibly connected, and the excavator for the propulsion method is configured.
前記推進用ヘッド（１）は、第１図（イ），（ロ），
（ハ）に示すように、例えば50〜70mmの小径のヘッド本
体（1A）と、ヘッド本体（1A）と同径でヘッド本体（1
A）に対して前後軸芯（Ｐ）周りに回転のみを許容する
状態で先端側に取付けてある掘削部（1B）、及び、掘削
部（1B）を回転操作する操作装置（７）とから成る。そ
して、前記掘削部（1B）には、推進用ヘッド（１）を地
中推進させるに伴って土圧を受けて、その土圧を受けた
方向に推進用ヘッド（１）の推進方向を向けるための受
圧面（Ｆ）を、先端側ほど軸芯（Ｐ）に近接する傾斜面
に形成して設けると共に、受圧面（Ｆ）とは径方向の反
対側に、水を噴射して旋回推進方向側の土質を軟弱化さ
せて旋回推進性を向上させるための水噴射ノズル（８）
を設けてある。The propulsion head (1) is shown in FIGS. 1 (a), (b),
As shown in (c), for example, a head body (1A) having a small diameter of 50 to 70 mm and a head body (1A) having the same diameter as the head body (1A).
From the excavation part (1B) attached to the tip side in a state where only rotation about the longitudinal axis (P) is allowed with respect to A) and the operating device (7) for rotating the excavation part (1B) Become. Then, earth pressure is applied to the excavation section (1B) as the propulsion head (1) is propelled underground, and the propulsion head (1) is directed in the direction in which the earth pressure is received. The pressure receiving surface (F) for forming is provided on the inclined surface closer to the shaft core (P) toward the tip end side, and water is jetted to the opposite side in the radial direction from the pressure receiving surface (F) for swirling propulsion. Water injection nozzle (8) for weakening soil on the direction side and improving turning propulsion
Is provided.
つまり、前記推進用ヘッド（１）を直進させる時は、
ヘッド本体（1A）に対して掘削部（1B）を第１図
（イ），（ロ），（ハ）に夫々示すように順に回転させ
ながら推進させ、旋回させる時は、旋回させるべき側に
水噴射ノズル（８）を向けると共に、その反対側に受圧
面（Ｆ）を向けて推進させれば、受圧面（Ｆ）が土圧を
受けて推進用ヘッド（１）の推進方向が受圧面（Ｆ）と
反対側に向けられ、この時、水噴射ノズル（８）によっ
て旋回方向側の土質が軟弱化されているために、土から
受ける抵抗が少く、推進用ヘッド（１）を小曲率半径で
旋回させられる。That is, when the propulsion head (1) is moved straight,
As shown in FIGS. 1 (a), (b), and (c), the excavation part (1B) is rotated in order with respect to the head body (1A) while propelling the excavation part (1B). When the water jet nozzle (8) is directed and the pressure receiving surface (F) is directed to the opposite side, the pressure receiving surface (F) receives earth pressure and the propulsion direction of the propulsion head (1) is the pressure receiving surface. (F) is directed to the opposite side, and at this time, since the water injection nozzle (8) weakens the soil on the turning direction side, the resistance received from the soil is small and the propulsion head (1) has a small curvature. It can be turned in a radius.
前記操作装置（７）は、軸芯（Ｐ）に沿って推進ヘッ
ド本体（1A）と掘削部（1B）とに対して往復移動自在に
取付けてある油圧操作式のピストン（14）と、軸芯
（Ｐ）に沿った方向のピストン（14）の移動を、軸芯
（Ｐ）周りの回転に変更して掘削部（1B）に伝える操作
力変換機構（15）とを有し、前記操作力変換機構（15）
は、掘削部（1B）に内装した螺旋状リード（15A）と、
螺旋状リード（15A）に摺動自在に咬合し、且つ、ピス
トン（14）に取付けたピン（15B）とから構成してあ
り、ピストン（14）の往復移動に伴うピン（15B）の移
動によって、互いに咬合したピン（15B）とリード（15
A）とが摺動して、掘削部（1B）が正転及び逆転方向に
夫々少くとも360度回転する。The operating device (7) includes a hydraulically operated piston (14) attached to the propulsion head main body (1A) and the excavation portion (1B) along a shaft core (P) so as to be reciprocally movable, and a shaft. An operation force conversion mechanism (15) for converting movement of the piston (14) in the direction along the core (P) into rotation around the shaft core (P) and transmitting the rotation to the excavation part (1B), Force conversion mechanism (15)
Is a spiral lead (15A) installed in the excavation part (1B),
It is slidably engaged with the spiral lead (15A) and consists of a pin (15B) attached to the piston (14). By the reciprocating movement of the piston (14), the pin (15B) moves. , Pins (15B) and leads (15
The excavation part (1B) rotates at least 360 degrees in the forward and reverse directions by sliding with A).
尚、前記ピストン（14）は、ヘッド本体（1A）に対し
て、キー（16）を介して軸芯（Ｐ）周りの回転を阻止さ
せてある。The piston (14) prevents the head body (1A) from rotating around the shaft center (P) via the key (16).
図中（17）はシールリングで、（18）は軸受けであ
る。In the figure, (17) is a seal ring and (18) is a bearing.
前記水噴射ノズル（８）は、その噴射方向を、受圧面
（Ｆ）とは径方向の反対側で斜め前方に向くように設定
して、受圧面（Ｆ）とは径方向の反対側の土を軟弱化す
るのみならず、推進方向側の土を掘削して推進効率を上
げられるように構成してある。The water jet nozzle (8) is set such that its jetting direction is directed diagonally forward on the side opposite to the pressure receiving surface (F) in the radial direction, and is set on the side opposite to the pressure receiving surface (F) in the radial direction. Not only is the soil softened, but the soil in the direction of propulsion is excavated to improve propulsion efficiency.
尚、前記推進用ヘッド（１）及び推進管（２）の内側
には、水噴射ノズル（８）に水を供給するための給水ホ
ース（12）の挿通孔（13）を形成してある。An insertion hole (13) for a water supply hose (12) for supplying water to the water injection nozzle (8) is formed inside the propulsion head (1) and the propulsion pipe (2).
前記推進用ヘッド（１）の推進時に直進させる時に
は、水噴射ノズル（８）からの水噴射を停止させても良
い。The water jet from the water jet nozzle (8) may be stopped when the propelling head (1) is advanced straight.
前記操作力変換機構（15）は、掘削部（1B）にリード
（15A）を、且つ、ピストン（14）にピン（15B）を設け
るのに代えて、ピストン（14）にリード（15A）を、且
つ、掘削部（1B）にリード（15A）と咬合するピン（15
B）を設けてあっても良く、また、第３図に示すよう
に、ピストン（14）先端部と掘削部（1B）とを一体回転
するようにスプライン嵌合させると共に、ピストン（1
4）を推進ヘッド本体（1A）に対して軸芯（Ｐ）周りに
回転自在に取付けて、ピストン（14）と推進ヘッド本体
（1A）とのうちのいずれか一方にリード（15A）を設
け、他方にリード（15A）と咬合するピン（15B）を設け
てあってもよい。In the operation force conversion mechanism (15), instead of providing the lead (15A) on the excavation portion (1B) and the pin (15B) on the piston (14), the lead (15A) is provided on the piston (14). In addition, the pin (15) that engages the lead (15A) in the excavation part (1B)
B) may be provided, and as shown in FIG. 3, the tip of the piston (14) and the excavation part (1B) are spline-fitted so as to rotate integrally, and the piston (1) is
4) is rotatably attached to the propulsion head body (1A) around the axis (P), and a lead (15A) is provided on either the piston (14) or the propulsion head body (1A). Alternatively, a pin (15B) that engages with the lead (15A) may be provided on the other side.
尚、特許請求の範囲の項に図面との対照を便利にする
為に符号を記すが、該記入により本発明は添付図面の構
造に限定されるものではない。In the claims, reference numerals are provided for convenience of comparison with the drawings, but the present invention is not limited to the structure shown in the attached drawings.
図面は本発明に係る推進工法用掘削機の実施例を示し、
第１図（イ），（ロ），（ハ）は、推進用ヘッドの縦断
面の作用説明図、第２図は掘削機の全体側面図、第３図
は別実施例の推進用ヘッドの縦断面図、第４図は従来例
の要部縦断面図である。 （1A）……ヘッド本体、（1B）……掘削部、 （７）……操作装置、（14）……ピストン、 （15）……操作力変換機構、（Ｐ）……軸芯、 （Ｆ）……受圧面。Drawing shows the example of the excavator for the propulsion method according to the present invention,
1 (a), (b), and (c) are explanatory views of the action of the vertical cross section of the propulsion head, FIG. 2 is an overall side view of the excavator, and FIG. 3 is a propulsion head of another embodiment. FIG. 4 is a longitudinal sectional view of a main part of a conventional example. (1A) …… Head body, (1B) …… Drilling section, (7) …… Operating device, (14) …… Piston, (15) …… Operating force conversion mechanism, (P) …… Shaft core, ( F) ... Pressure receiving surface.
Claims (1)
心軸芯（Ｐ）周りに回転自在な掘削部（1B）を設け、前
記掘削部（1B）を回転操作する操作装置（７）を、前記
推進ヘッド本体（1A）と前記掘削部（1B）とにわたって
設け、前記操作装置（７）は、前記軸芯（Ｐ）に沿って
往復移動するピストン（14）と、前記軸芯（Ｐ）に沿っ
た方向の前記ピストン（14）の移動を、前記軸芯（Ｐ）
周りの回転に変換して前記掘削部（1B）に伝える操作力
変換機構（15）とを備え、前記推進ヘッド本体（1A）を
地中推進させるに伴って土圧を受ける受圧面（Ｆ）を前
記掘削部（1B）に設け、前記受圧面（Ｆ）を先端側ほど
前記軸芯（Ｐ）に近接する傾斜面に形成してある推進工
法用掘削機であって、前記掘削部（1B）を、前記推進ヘ
ッド本体（1A）に対して前記軸芯（Ｐ）周りに回転のみ
許容する状態で取付け、前記ピストン（14）を、前記推
進ヘッド本体（1A）と前記掘削部（1B）とに対して往復
移動自在に取付けてある推進工法用掘削機。1. An operating device (7) for rotating and operating the excavation part (1B), which is provided on the tip side of the propulsion head body (1A) and is rotatable around its central axis (P). ) Is provided over the propulsion head main body (1A) and the excavation part (1B), and the operating device (7) includes a piston (14) that reciprocates along the shaft core (P), and the shaft core. The movement of the piston (14) in the direction along (P) is caused by the axial core (P).
A pressure receiving surface (F) that is provided with an operating force conversion mechanism (15) that converts the rotation to the surrounding rotation and transmits it to the excavation section (1B), and receives earth pressure as the propulsion head body (1A) is propelled underground. Is provided in the excavation part (1B), and the pressure receiving surface (F) is formed on an inclined surface closer to the shaft core (P) toward the tip end side. ) Is attached to the propulsion head main body (1A) while allowing only rotation around the shaft core (P), and the piston (14) is attached to the propulsion head main body (1A) and the excavation section (1B). An excavator for the propulsion method that is attached so that it can reciprocate relative to and.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63314260A JP2688227B2 (en) | 1988-12-12 | 1988-12-12 | Excavator for propulsion method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63314260A JP2688227B2 (en) | 1988-12-12 | 1988-12-12 | Excavator for propulsion method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02161097A JPH02161097A (en) | 1990-06-20 |
| JP2688227B2 true JP2688227B2 (en) | 1997-12-08 |
Family
ID=18051209
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63314260A Expired - Fee Related JP2688227B2 (en) | 1988-12-12 | 1988-12-12 | Excavator for propulsion method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2688227B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109779650A (en) * | 2019-02-19 | 2019-05-21 | 中国铁建重工集团有限公司 | A kind of tunnel piercing device |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0730794Y2 (en) * | 1991-01-29 | 1995-07-19 | 株式会社サンテック | Underground propellant |
| CN112797227B (en) * | 2021-01-05 | 2022-06-24 | 安徽省新路建设工程集团有限责任公司 | Ultra-long distance pipe jacking structure in complex environment and construction method |
| KR102609304B1 (en) * | 2022-11-25 | 2023-12-04 | 주식회사 제이에스이앤씨 | A grouting method using a direction-controlled borehole and a grouting system for the soft ground and void area |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0547832Y2 (en) * | 1988-02-15 | 1993-12-16 |
-
1988
- 1988-12-12 JP JP63314260A patent/JP2688227B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109779650A (en) * | 2019-02-19 | 2019-05-21 | 中国铁建重工集团有限公司 | A kind of tunnel piercing device |
| CN109779650B (en) * | 2019-02-19 | 2020-12-04 | 中国铁建重工集团股份有限公司 | Tunnel tunneling device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02161097A (en) | 1990-06-20 |
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| Date | Code | Title | Description |
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| LAPS | Cancellation because of no payment of annual fees |