JPS5919206B2 - Ground excavation method - Google Patents
Ground excavation methodInfo
- Publication number
- JPS5919206B2 JPS5919206B2 JP12317880A JP12317880A JPS5919206B2 JP S5919206 B2 JPS5919206 B2 JP S5919206B2 JP 12317880 A JP12317880 A JP 12317880A JP 12317880 A JP12317880 A JP 12317880A JP S5919206 B2 JPS5919206 B2 JP S5919206B2
- Authority
- JP
- Japan
- Prior art keywords
- rotating
- vertical
- shafts
- casing
- rotation
- 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
Links
Landscapes
- Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
Description
【発明の詳細な説明】 本発明は、地盤の掘削方法に関するものである。[Detailed description of the invention] The present invention relates to a ground excavation method.
本発明の目的とするところは、回転するケーシング内で
複数本の回転縦軸を夫々回転させると共に回転縦軸群を
一体として回転又は揺動させることでケーシングの回転
と、回転縦軸群を一体とした回転又は揺動と、この回転
縦軸群の一体とした回転又は揺動中における各回転縦軸
の夫々独立した回転と、隣りあう回転縦軸のビットの回
転軌跡の一部重複との3者の相乗効果によって効率よく
掘削ができると共にこの掘削が回転するケーシング内で
おこなわれることで周辺地盤をくずすことな(正確に大
口径の掘削ができる地盤の掘削方法を提供するにある。An object of the present invention is to rotate a plurality of rotating vertical shafts within a rotating casing, and also to rotate or swing the rotating vertical shafts as a unit, so that the rotation of the casing and the rotating vertical shafts are integrated. rotation or swinging, independent rotation of each rotating vertical axis during the integral rotation or swinging of this group of rotating vertical axes, and partial overlap of the rotation trajectories of the bits on adjacent rotating vertical axes. To provide a ground excavation method that enables efficient excavation due to the synergistic effect of the three parties, and allows accurate large-diameter excavation without damaging the surrounding ground because the excavation is carried out within a rotating casing.
本発明を以下実施例により詳述する。The present invention will be explained in detail below with reference to Examples.
図中Aは本発明の地盤の掘削方法に用いる掘削機であり
、この掘削機Aには直線上又は交差する直線上又は多角
形の夫々の頂角点に位置する複数本の各回転縦軸1を夫
々回転させるための縦軸回転手段3と、複数本の回転縦
軸1群を一体として回転又は揺動させるための群駆動手
段4とを具備し、更に複数本の回転縦軸1全体が回転す
る筒状のケーシングKにておおっである。A in the figure is an excavator used in the ground excavation method of the present invention, and this excavator A has a plurality of rotating vertical shafts located on a straight line or on an intersecting straight line or at each apex point of a polygon. 1, and a group drive means 4 for rotating or swinging a group of a plurality of rotating vertical shafts 1 as a unit, and further includes a group driving means 4 for rotating or swinging a group of a plurality of rotating vertical shafts 1 as a whole. is covered by a rotating cylindrical casing K.
第1図、第2図には縦軸回転手段3と群駆動手段4との
1例が示しである。FIG. 1 and FIG. 2 show an example of the vertical axis rotation means 3 and the group drive means 4.
動力及び減速装置よりなる駆動装置5と、この駆動装置
5によって回転又は揺動させられる駆動ヘッド6とで群
駆動手段4が構成してあり、駆動ヘッド6の下面部には
複数本の回転縦軸7の上端部が回転自在に軸支してあり
、駆動装置5によって駆動ヘッド6を回転又は水平回転
方向に揺動させることで複数本の回転縦軸1群を一体と
して回転又は水平回転方向に揺動させるようになってい
る。A group drive means 4 is composed of a drive device 5 consisting of a power and deceleration device, and a drive head 6 that is rotated or oscillated by this drive device 5. The upper end of the shaft 7 is rotatably supported, and the drive head 6 is rotated or swung in the horizontal rotation direction by the drive device 5, so that a group of a plurality of rotating vertical shafts can be rotated as one or in the horizontal rotation direction. It is designed to oscillate.
一方駆動ヘッド6内には他の動力及び減速装置よりなる
回転装置8が設けてあり、また各回転縦軸1の上端部に
は歯車9が設けてあってそれぞれ隣りの歯車9と噛み合
っており、回転装置8の回転を一つの回転縦軸1に伝え
、一つの回転縦軸1の回転を歯車9を介して他の回転縦
軸1に伝えるようになっている。On the other hand, within the drive head 6 there is provided a rotating device 8 consisting of another power and speed reduction device, and a gear 9 is provided at the upper end of each rotating vertical shaft 1, each meshing with an adjacent gear 9. , the rotation of the rotating device 8 is transmitted to one vertical rotating shaft 1, and the rotation of one vertical rotating shaft 1 is transmitted to the other vertical rotating shaft 1 via a gear 9.
したがってこの実施例では回転装置8、歯車9群等が各
回転縦軸1を回転するための縦軸回転手段3となってい
る。Therefore, in this embodiment, the rotating device 8, the group of gears 9, etc. serve as the vertical axis rotating means 3 for rotating each vertical axis of rotation 1.
またケーシングKを回転させる機構の一例を示すと、第
1図のように駆動装置5と駆動ヘッド6とを連結する連
結軸部Cに中央歯車りを固着し、駆動装置5を支持する
回転しない基盤Bに回転自在に支持した伝達歯車Eを中
央歯車りに噛み合せ、この伝達歯車Eをケーシングにの
上部内面の歯車列Fに噛み合せることで駆動装置5の回
転をケーシングKに伝えるようになっている。An example of a mechanism for rotating the casing K is as shown in FIG. The rotation of the drive device 5 is transmitted to the casing K by meshing the transmission gear E rotatably supported on the base B with the central gear, and meshing the transmission gear E with the gear train F on the upper inner surface of the casing. ing.
ここでケーシングには回転はするが、基盤Bに対して移
動しないように支持されるものである。Here, although the casing rotates, it is supported so as not to move relative to the base B.
ここで各回転縦軸1の配置は第3図、第4図のように直
線上に複数個配置したもの、第5図のように三角形の各
頂角点上に配置したもの、第6図のように直交する直線
上に配置したものの例を示しているが、上記の配置のみ
に限定されず、三角形以外の他の多角形状の頂角点に位
置させてもよく、あるいは十字状以外の複数本の直線が
交差する各線上に配置してもよく、また上記以外の配置
であってもよい。Here, the arrangement of the respective rotational vertical axes 1 is as shown in Figs. 3 and 4, where a plurality of them are arranged on a straight line, as shown in Fig. 5, on each vertex point of a triangle, and as shown in Fig. 6. An example is shown in which they are arranged on perpendicular lines, but they are not limited to the above arrangement, and may be located at the apex points of other polygons other than triangles, or in shapes other than cross shapes. It may be arranged on each line where a plurality of straight lines intersect, or it may be arranged in a manner other than the above.
回転縦軸1の下端にはそれぞれビット10が設けてあり
、各回転縦軸1は1乃至複数個の連結装置11によって
連結してあって各回転縦軸1相互の位置関係を正確に保
つようになっており、各回転縦軸1は連結装置11に回
転自在に軸支しである。A bit 10 is provided at the lower end of each rotating vertical shaft 1, and each rotating vertical shaft 1 is connected by one or more connecting devices 11 so as to maintain accurate mutual positional relationship of each rotating vertical shaft 1. Each rotating vertical shaft 1 is rotatably supported by a connecting device 11.
回転縦軸1には用途に応じてスクリュ一部12.攪拌翼
部13等が設けである。A screw part 12 is attached to the rotating vertical shaft 1 depending on the application. A stirring blade section 13 and the like are provided.
第7図には上下方向にスクリュ一部12と攪拌翼部13
とを交互に有する回転縦軸1、攪拌翼部13のみを設け
た回転縦軸1を組合せたものの例が示しである。FIG. 7 shows a screw part 12 and a stirring blade part 13 in the vertical direction.
The example shown is a combination of a rotating vertical shaft 1 having alternating rotating shafts 1 and a rotating vertical shaft 1 having only stirring blades 13.
ここで回転縦軸1の攪拌翼部13は隣りの回転縦軸1の
攪拌翼部13と上下方向に若干ずれていて、隣りあう攪
拌翼部13の先端部同士又は攪拌翼部13の先端の描く
軌跡同士が重複するようになっている。Here, the stirring blade part 13 of the rotating vertical shaft 1 is slightly shifted vertically from the stirring blade part 13 of the adjacent rotating vertical shaft 1, and the tips of the adjacent stirring blade parts 13 or the tips of the stirring blade parts 13 are slightly shifted from each other in the vertical direction. The trajectories drawn overlap each other.
第8図には上下方向にスクリュ一部12を一定間隔をへ
だてて複数箇所に設けた回転縦軸1を複数個組合せたも
のの例が示しである。FIG. 8 shows an example of a combination of a plurality of rotating vertical shafts 1 provided at a plurality of locations with screw portions 12 spaced apart from each other at regular intervals in the vertical direction.
この場合隣りあう回転縦軸1のスクリュ一部12同士が
同一レベルとならないように上下方向にずらしておくも
のである。In this case, the screw portions 12 of adjacent vertical rotating shafts 1 are shifted in the vertical direction so that they are not at the same level.
この実施例においても隣りあう回転縦軸1のスクリュ一
部12の外端の描く軌跡同士が重複するようになってい
る。In this embodiment as well, the trajectories drawn by the outer ends of the screw portions 12 of the adjacent vertical rotating shafts 1 overlap with each other.
第1図には上下方向に攪拌翼部13を一定間隔をへだて
て複数箇所に設けた回転縦軸1を複数個組合せたものの
例が示しである。FIG. 1 shows an example of a combination of a plurality of rotary vertical shafts 1, each of which has a plurality of rotating vertical shafts 1, each of which has a plurality of stirring blades 13 spaced apart from each other at regular intervals in the vertical direction.
この場合隣りあう回転縦軸1の攪拌翼部13は上下方向
にずれており、また攪拌翼部13の先端の描く軌跡同士
が重複するようになっている。In this case, the stirring blades 13 of adjacent vertical rotating shafts 1 are shifted in the vertical direction, and the trajectories drawn by the tips of the stirring blades 13 overlap each other.
ところで隣りあう回転縦軸1に設けたビット10は図面
に示すように上下方向にずれており(回転縦軸が群とし
て回転する回転軌跡の半径方向又は周方向に隣りあうビ
ットが上下にずれており)、またこの上下にずれた隣り
あうビット10はその独立した回転軌跡が互いに一部重
複するようになっている。By the way, as shown in the drawing, the bits 10 installed on adjacent rotating vertical axes 1 are shifted vertically (bits that are adjacent to each other in the radial or circumferential direction of the rotation locus where the rotating vertical shafts rotate as a group are vertically shifted). Also, the independent rotation trajectories of the vertically shifted adjacent bits 10 partially overlap with each other.
ここで複数本の回転縦軸1は歯車9の噛み合せや回転を
伝達する歯車9の数を調整することで、任意に回転方向
が選択できるものである。Here, the rotation direction of the plurality of rotating vertical shafts 1 can be arbitrarily selected by adjusting the meshing of the gears 9 and the number of gears 9 that transmit rotation.
この回転方向の例示として第3図乃至第6図において矢
印で示してお(。As an example of this direction of rotation, it is shown by an arrow in FIGS. 3 to 6 (.
なお上記の複数本の回転縦軸1の回転方向を決定するに
は掘削の用途に応じ、例えば掘削孔内における掘削土と
、セメントミルク、セメントミルクとアスファルトとの
混合液等の液状物との混合攪拌を主にする場合や、ある
いは掘削土の全部又は一部を外部に排出する場合等によ
って各軸の回転方向を決定するとよい。The direction of rotation of the plurality of rotating vertical shafts 1 can be determined depending on the purpose of the excavation, for example, by determining the relationship between the excavated soil and a liquid such as cement milk or a mixture of cement milk and asphalt in the excavation hole. The direction of rotation of each shaft may be determined depending on the case where mixing and agitation is the main purpose, or when all or part of the excavated soil is to be discharged to the outside.
しかして地盤2を掘削するに当っては、ケーシングKを
回転させ、この回転するケーシングに内において複数本
の回転縦軸1を夫々回転させると共に上記複数本の回転
縦軸1群を一体として回転または水平回転方向に揺動す
ることで地盤2を掘削するものである。When excavating the ground 2, the casing K is rotated, and each of the plurality of rotating vertical shafts 1 is rotated within the rotating casing, and at the same time, a group of the plurality of rotating vertical shafts 1 is rotated as a unit. Alternatively, the ground 2 is excavated by swinging in the horizontal rotation direction.
この場合地盤2は回転するケーシングKによって掘削さ
れ、また各回転縦軸1によって掘削されると共に複数本
の回転縦軸1群が全体として回転すること、及び隣りあ
うビット10の回転軌跡が一部重複しあうことで掘削さ
れるものであり、また同時に回転するケーシングに内で
掘削土が各回転縦軸1の回転によって細かく粉さいされ
ると共に回転縦軸1群全体の回転によって細かく粉、さ
いされるものである。In this case, the ground 2 is excavated by the rotating casing K, and the ground 2 is excavated by each rotating vertical shaft 1, and the group of the plurality of rotating vertical shafts 1 rotates as a whole, and the rotation trajectory of the adjacent bits 10 is partially The excavated soil is excavated by overlapping each other, and the excavated soil is finely ground in the simultaneously rotating casing by the rotation of each rotating vertical shaft 1, and is also finely ground and sized by the rotation of the entire group of rotating vertical shafts 1. It is something that will be done.
ここで掘削と共に掘削孔中にセメントミルクやセメント
ミルクとアスファルトとの混合液等を注入す・るとこれ
らの液状物と掘削土砂との混合攪拌が効率よくおこなわ
れることとなる。If cement milk or a mixed liquid of cement milk and asphalt is injected into the excavated hole during excavation, mixing and agitation of these liquids and the excavated soil will be performed efficiently.
またスクリュ一部12で排土する場合にも掘削土砂が細
かく粉さいされるので排土が容易となるものである。Further, when the earth is removed by the screw part 12, the excavated earth and sand is finely ground, so that the earth can be easily removed.
本発明にあっては、叙述のように複数本の回転縦軸の下
端部にビットを設け、隣りあう回転縦軸ノヒットを上下
方向にずらせると共にビットの回転軌跡同士を一部重複
させ、上記複数本の回転縦軸全体を筒状のケーシングに
ておおいケーシングを回転させ、この回転するケーシン
グ内において複数本の回転縦軸を夫々回転させると共に
上記複数本の回転縦軸群を一体として回転又は揺動させ
て地盤を掘削するのでケーシングの回転と、回転するケ
ーシング内における回転縦軸群を一体とした回転又は揺
動と、この回転縦軸群を一体とした回転又は揺動中にお
ける各回転軸の夫々独立した回転と、隣りあうビットの
回転軌跡同士の重複との4者の相乗効果によって4重に
掘削されて効率よく掘削でき、しかも回転縦軸群を一体
とした回転又は揺動による軌跡と同じ大きさの大口径の
掘削ができ、またこの大口径の掘削に当って、隣りあう
ビットの回転軌跡の一部同士が重複しているので、大口
径の掘削孔内において掘削されない部分がなくなり、大
口径の掘削孔内が水平断面において均一に掘削されるこ
ととなり、しかも回転縦軸群を一体とした回転又は揺動
による軌跡とほぼ同じ大きさの回転するケーシングと同
じ大きさの掘削が容易にできるものであり、また回転す
るケーシング内で掘削がおこなわれるので、周辺地盤を
くずすことな(正確に掘削ができるという利点がある。In the present invention, as described above, the bits are provided at the lower ends of a plurality of rotating vertical axes, the hits of adjacent rotating vertical axes are shifted in the vertical direction, and the rotational trajectories of the bits are partially overlapped with each other. Enveloping the entire plurality of rotating vertical shafts in a cylindrical casing, rotating the casing, rotating each of the plurality of rotating vertical shafts within the rotating casing, and rotating the plurality of rotating vertical shafts as a unit; Since the ground is excavated by shaking, the rotation of the casing, the rotation or rocking of the rotary vertical axes in the rotating casing, and the rotation or rocking of the rotary vertical axes as a whole. The synergistic effect of the independent rotation of each shaft and the overlap of the rotational trajectories of adjacent bits enables efficient drilling by quadruple drilling. It is possible to excavate a large diameter with the same size as the trajectory, and during this large diameter excavation, parts of the rotational trajectories of adjacent bits overlap each other, so the portion that is not excavated in a large diameter drilling hole. As a result, the large-diameter borehole can be drilled uniformly in the horizontal section, and the rotary casing, which is approximately the same size as the locus caused by the rotation or oscillation of the rotary vertical shaft group as a unit, can be drilled uniformly in the horizontal section. It is easy to excavate, and since excavation is carried out inside a rotating casing, it has the advantage of being able to excavate accurately without disturbing the surrounding ground.
また回転するケーシング内で回転縦軸群が一体に回転又
は揺動するので、周辺地盤の大きな抵抗をうけずに回転
縦軸群がスムーズに回転又は揺動できるという利点があ
る。Furthermore, since the rotating vertical shafts rotate or swing together in the rotating casing, there is an advantage that the rotating vertical shafts can smoothly rotate or swing without experiencing large resistance from the surrounding ground.
なお回転するケーシングを取りはずし自在な構造として
おくと、掘削径地盤中にケーシングを残して掘削機を引
き上げることもでき、この場合には大口径のケーシング
を地盤中に打ち込むことができるのである。If the rotating casing is designed to be removable, the excavator can be pulled up leaving the casing in the ground at the excavation diameter, and in this case, a large-diameter casing can be driven into the ground.
第1図は本発明に用いる掘削機の一例を示す一部破断せ
る正面図、第2図a、bは第1図X−X線の断面図及び
第1図X−X線の断面図、第3図乃至第6図は同上の軸
の配置状態を示す概略横断面図、第7図及び第8図は同
上の掘削機の回転縦軸にスクリュ一部や攪拌翼部を設け
た各実施例の正面図であって、1は回転縦軸、2は地盤
、Kはケーシングである。FIG. 1 is a partially cutaway front view showing an example of an excavator used in the present invention, FIGS. 2 a and b are sectional views taken along line XX in FIG. 1, and sectional views taken along line XX in FIG. Figures 3 to 6 are schematic cross-sectional views showing the arrangement of the shafts of the above excavator, and Figures 7 and 8 are examples of the same excavator in which a part of the screw and a stirring blade are provided on the rotating vertical shaft. It is a front view of an example, and 1 is a rotating vertical axis, 2 is the ground, and K is a casing.
Claims (1)
う回転縦軸のビットを上下方向にずらせると共にビット
の回転軌跡同士を一部重複させ、上記複数本の回転縦軸
全体を筒状のケーシングにておおい、ケーシングを回転
させ、この回転するケーシング内において複数本の回転
縦軸を夫々回転させると共に上記複数本の回転縦軸群を
一体として回転又は揺動させて地盤を掘削することを特
徴すする地盤の掘削方法。1 Bits are provided at the lower ends of the plurality of vertical rotating shafts, and the bits of adjacent vertical rotating shafts are shifted in the vertical direction, and the rotation loci of the bits partially overlap each other, so that the entire plurality of vertical rotating shafts are The ground is excavated by rotating the casing, rotating each of the plurality of rotating vertical shafts within the rotating casing, and rotating or swinging the plurality of rotating vertical shafts as a unit. A ground excavation method characterized by:
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12317880A JPS5919206B2 (en) | 1980-09-04 | 1980-09-04 | Ground excavation method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12317880A JPS5919206B2 (en) | 1980-09-04 | 1980-09-04 | Ground excavation method |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5748029A JPS5748029A (en) | 1982-03-19 |
JPS5919206B2 true JPS5919206B2 (en) | 1984-05-04 |
Family
ID=14854111
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12317880A Expired JPS5919206B2 (en) | 1980-09-04 | 1980-09-04 | Ground excavation method |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5919206B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0551515U (en) * | 1991-12-19 | 1993-07-09 | 株式会社コンドウ | Cam claw support device in automatic chuck device for cylindrical grinder |
-
1980
- 1980-09-04 JP JP12317880A patent/JPS5919206B2/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0551515U (en) * | 1991-12-19 | 1993-07-09 | 株式会社コンドウ | Cam claw support device in automatic chuck device for cylindrical grinder |
Also Published As
Publication number | Publication date |
---|---|
JPS5748029A (en) | 1982-03-19 |
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