JP5062793B1

JP5062793B1 - Mixed two-component rotary jetting device

Info

Publication number: JP5062793B1
Application number: JP2012153284A
Authority: JP
Inventors: 孝次飯田; 真神村; 俊守前
Original assignee: Something Co Ltd
Current assignee: Something Co Ltd
Priority date: 2012-07-09
Filing date: 2012-07-09
Publication date: 2012-10-31
Anticipated expiration: 2032-07-09
Also published as: JP2014015749A

Abstract

【課題】地上装置が不要若しくは小さく、狭い路地でも施工が可能であると共に、地中に円柱状の固結体の造成が可能な薬液を用いた混合２液回転噴射装置を提供すること。
【解決手段】混合２液が噴射される斜め噴射孔１１を有する先端部と、Ａ液の横噴射流を羽根に受けて回転する第１水平回転体３と、Ｂ液の縦噴射流を羽根に受けて回転する該第１水平回転体の反先端側に隣接して形成される第２水平回転体４と、を有する円錐状の先端回転体１と、該先端回転体の内室と区画する隔壁５と、隔壁５に形成される第２水平回転体４の羽根にＢ液を噴射するＢ液噴射口６と、を有するロッド本体部２と、第１水平回転体３の羽根に側面からＡ液を噴射するＡ液供給系と、Ｂ液噴射口６に接続するＢ液供給系と、を備え、Ａ液とＢ液の２液の供給により、ロッド本体部２に対して先端回転体１が回転し、混合液を斜め噴射孔１１から地盤中に噴射する混合２液回転噴射装置１０。
【選択図】図３An object of the present invention is to provide a mixed two-component rotary injection device using a chemical solution that requires a ground device and can be constructed even in a narrow alley and can form a cylindrical solid body in the ground.
SOLUTION: A tip portion having an oblique injection hole 11 through which a mixed two liquid is injected, a first horizontal rotating body 3 that rotates by receiving a horizontal injection flow of A liquid on a blade, and a vertical injection flow of B liquid on a blade. A conical tip rotator 1 having a second horizontal rotator 4 formed adjacent to the opposite tip side of the first horizontal rotator rotating in response to the inner rotator, and an inner chamber and a partition of the tip rotator A rod body 2 having a partition wall 5 to be formed, a B liquid injection port 6 for injecting a B liquid to the blades of the second horizontal rotator 4 formed on the partition wall 5, and side surfaces of the blades of the first horizontal rotator 3. A liquid supply system for injecting A liquid from the B liquid supply system connected to the B liquid injection port 6, and rotating the tip with respect to the rod body 2 by supplying two liquids of A liquid and B liquid A mixed two-liquid rotary injection device 10 in which the body 1 rotates and the mixed liquid is injected into the ground from the oblique injection holes 11.
[Selection] Figure 3

Description

本発明は、地盤改良を目的とする薬液注入工法に用いる混合２液回転噴射装置に関するものである。 The present invention relates to a mixed two-liquid rotary injection device used for a chemical liquid injection method for the purpose of ground improvement.

地盤改良を目的とする工法としては、二重管ロッドを土中に削孔し、外管と内管よりそれぞれ主剤、硬化剤を同時に圧送し、先端モニターより混合された薬液を土中に浸透させることで地盤改良を行う二重管ストレーナ工法等の薬液注入工法、圧縮空気を伴った高圧スラリーを、同一軸より回転噴射させることで、土砂を切削排出すると共に、地盤に円柱状の固結体を造成する高圧噴射撹拌杭工法（ＪＳＧ工法）、高圧スラリーを地盤に回転噴射させることで、円柱状の固結体を造成する高圧噴射撹拌杭工法（ＣＣＰ工法）が挙げられる。通常、住宅等の建物の基礎地盤の改良においては、排泥がないこと、改良体の有効範囲が広いこと等の理由で、薬液を土中に浸透させることで地盤改良を行う二重管ストレーナ工法等の薬液注入工法が広く用いられている。 To improve the ground, a double tube rod is drilled in the soil, the main agent and hardener are simultaneously pumped from the outer and inner tubes, respectively, and the mixed chemical solution penetrates into the soil from the tip monitor. In addition to the chemical injection method, such as the double pipe strainer method, which improves the ground by rotating, high-pressure slurry with compressed air is sprayed from the same axis to cut and discharge the earth and sand, and to the ground Examples include a high-pressure jet agitation pile method (JSG method) for creating a body and a high-pressure jet agitation pile method (CCP method) for producing a cylindrical solid body by rotating and jetting high-pressure slurry on the ground. Usually, in the improvement of the foundation ground of a building such as a house, a double pipe strainer that improves the ground by infiltrating the chemical solution into the soil due to the absence of mud and the effective range of the improved body is wide. A chemical solution injection method such as a method is widely used.

一方、近年、大地震や巨大地震の際に、広範囲の地域で発生する地盤の液状化への対策が急務となっている。住宅等の建設予定地では、地盤強度等の調査を行い、軟弱地盤に対しては地盤改良を施すことが行なわれており、一方、既存住宅においても、周辺地盤等に地盤改良を施すことが行なわれている。この場合、薬液を土中に浸透させることで地盤改良を行う薬液注入工法が適用される。 On the other hand, in recent years, there has been an urgent need to take measures against ground liquefaction that occurs in a wide area in the event of a large earthquake or a huge earthquake. In the planned construction sites such as houses, the ground strength is investigated and the ground is improved for the soft ground. On the other hand, in the existing houses, the ground can be improved in the surrounding ground. It is done. In this case, a chemical solution injection method for improving the ground by allowing the chemical solution to penetrate into the soil is applied.

特開平９−８８０５６号公報JP-A-9-88056

しかしながら、二重管ストレーナ工法で使用するボーリング装置は、小さいものでも１トンはあり、設置面積も比較的大きいため、特に既存住宅が密集する区域の地盤改良の場合、建物周りの狭いスペースへ設置しての使用は困難であるという問題がある。また、二重管ストレーナ工法において、二重管ロッドが回転しないものは、先端又は周面に形成された吐出孔から薬液を土中の間隙に浸透させるため、円柱状の固結体の造成ができない。このような二重管ロッドが回転しない施工は、地盤を補強するような改良であるため、自立性に乏しい軟弱な地盤に対しては、目的の改良強度や改良範囲が得られないという問題がある。一方、二重管ロッドが回転するものは、円柱状の固結体は造成できるものの、地上の装置が大となり、建物周りの狭いスペースへ設置しての使用は困難であるという問題がある。 However, since the boring device used in the double-pipe strainer method is small, it has a ton, and the installation area is relatively large, so it is installed in a narrow space around the building, especially in the case of ground improvement in areas where existing houses are concentrated. Therefore, there is a problem that it is difficult to use. In addition, in the double tube strainer method, when the double tube rod does not rotate, the chemical solution penetrates into the gap in the soil from the discharge hole formed at the tip or the peripheral surface, so that a cylindrical solid body is formed. Can not. Such a construction in which the double tube rod does not rotate is an improvement that reinforces the ground, so there is a problem that the intended improved strength and range cannot be obtained for soft ground that is not self-supporting. is there. On the other hand, when the double tube rod is rotated, a cylindrical solid body can be formed, but there is a problem that the apparatus on the ground becomes large and it is difficult to use it in a narrow space around the building.

従って、本発明の目的は、地上装置が不要若しくは小さく、建物が密集する建物周りの狭いスペースでも施工が可能であると共に、地中に円柱状の固結体の造成が可能な薬液を用いた混合２液回転噴射装置を提供することにある。 Therefore, an object of the present invention is to use a chemical solution that can be constructed even in a narrow space around a building where a ground device is unnecessary or small and the building is dense, and can form a cylindrical solid body in the ground. The object is to provide a mixed two-liquid rotary injection device.

かかる実情において、本発明者は鋭意検討を行った結果、円錐状の先端回転体をロッド本体部に対して回転させる回転動力として、混合２液を斜めに噴射する斜め噴射動力、Ａ液の横噴射動力及びＢ液の縦噴射動力の３つの動力を利用した構造とすれば、地上動力装置が実質的に不要となるため、狭い路地でも施工が可能であると共に、地中に円柱状の固結体の造成が可能となること等を見出し、本発明を完成するに至った。 In this situation, as a result of intensive studies, the present inventor has found that the oblique injection power for injecting the mixed two liquids obliquely as the rotational power for rotating the conical tip rotating body with respect to the rod body, the side of the liquid A. If the structure uses the three powers of the injection power and the vertical injection power of the B liquid, a ground power device is substantially unnecessary, so that it is possible to perform construction even in narrow alleys, and a solid cylindrical column in the ground. The inventors have found that it is possible to form a knot, and have completed the present invention.

すなわち、本発明は、混合２液が噴射される斜め噴射孔を有する先端部と、該先端部から反先端側に延びる中心軸に固定されるＡ液の横噴射流を羽根に受けて回転する第１水平回転体と、Ｂ液の縦噴射流を羽根に受けて回転する該第１水平回転体の反先端側に隣接して形成される第２水平回転体と、反先端側の端部に形成される端部嵌合部とを有する円錐状の先端回転体と、ロッド本体部の側面で該端部嵌合部と回転自在に嵌合する側面嵌合部と、該先端回転体の内室と区画する隔壁と、該隔壁に形成される該第２水平回転体の羽根にＢ液を噴射するＢ液噴射口と、を有するロッド本体部と、該第１水平回転体の羽根に側面からＡ液を噴射するＡ液噴射口を有するＡ液供給系と、該Ｂ液噴射口に接続するＢ液供給系と、を備え、Ａ液とＢ液の２液の供給により、該ロッド本体部に対して該先端回転体が回転し、混合液が噴射孔から地盤中に噴射されることを特徴とする混合２液噴射装置を提供するものである。 That is, in the present invention, the blades receive and rotate the tip portion having the oblique injection holes through which the mixed two liquids are jetted and the liquid A, which is fixed to the central axis extending from the tip portion to the opposite tip side. A first horizontal rotator, a second horizontal rotator formed adjacent to the anti-tip side of the first horizontal rotator rotating by receiving the vertical jet flow of the B liquid on the blades, and an end on the anti-tip side A conical tip rotating body having an end fitting portion formed on the side surface, a side fitting portion that is rotatably fitted to the end fitting portion on a side surface of the rod main body portion, and the tip rotating body. A rod body having a partition partitioning from the inner chamber, a B liquid injection port for injecting B liquid to the blades of the second horizontal rotating body formed in the partition, and the blades of the first horizontal rotating body A liquid supply system having an A liquid injection port for injecting A liquid from the side surface, and a B liquid supply system connected to the B liquid injection port. The supply of the liquid, the rod main body tip rotating body is rotated with respect to, the liquid mixture is intended to provide a mixture of two liquid-jet apparatus characterized by being injected into the ground in the injection hole.

本発明によれば、地上装置が不要若しくは小さく、密集した建物の建物周りの狭いスペースでも施工が可能であると共に、地中に円柱状の固結体の造成が可能となる。すなわち、既存住宅における地盤改良、液状化対策としての更なる地盤補強を具現することができる。また、固結体の径は、Ａ液とＢ液の噴射圧の調整により、所望の径のものが造成可能となる。 According to the present invention, a ground device is unnecessary or small, and it is possible to perform construction even in a narrow space around a densely built building, and it is possible to create a cylindrical solid body in the ground. That is, it is possible to realize ground improvement in existing houses and further ground reinforcement as a countermeasure against liquefaction. In addition, the diameter of the solidified body can be set to a desired diameter by adjusting the injection pressures of the A liquid and the B liquid.

本発明の実施の形態における混合２液回転噴射装置の斜視図である。It is a perspective view of the mixing 2 liquid rotary injection apparatus in embodiment of this invention. 図１の混合２液回転噴射装置の先端の簡略断面図である。FIG. 2 is a simplified cross-sectional view of the tip of the mixed two-liquid rotary spray device of FIG. 図２の装置を側面から見た簡略断面図である。FIG. 3 is a simplified cross-sectional view of the apparatus of FIG. 2 as viewed from the side. （Ａ）は水車構造体を構成する横外管と横内管を説明する図、（Ｂ）は横内管の展開図、（Ｃ）は回転に連れて噴射圧力が変動する状態図である。(A) is a figure explaining the horizontal outer tube | pipe and horizontal inner tube | pipe which comprise a water turbine structure, (B) is a development view of a horizontal inner tube, (C) is a state figure with which injection pressure fluctuates with rotation. 横内管の他の例を説明する図である。It is a figure explaining the other example of a horizontal inner pipe. （Ａ）は第２水平回転体を上から見た簡略図、（Ｂ）は（Ａ）の一部の左側面図である。(A) is the simplified view which looked at the 2nd horizontal rotary body from the top, (B) is the left view of a part of (A). 第１水平回転体を上から見た簡略図である。It is the simplified view which looked at the 1st horizontal rotating body from the top. 先端回転体を先端側から見た簡略図である。It is the schematic which looked at the front-end | tip rotary body from the front end side. （Ａ）は先端回転体を先端側から見た斜め噴射口の模式図、（Ｂ）は（Ａ）を側面から見た斜め噴射口の模式図である。(A) is the schematic diagram of the diagonal injection port which looked at the front-end | tip rotary body from the front end side, (B) is the schematic diagram of the diagonal injection port which looked at (A) from the side surface. 先端嵌合部と側面嵌合部の嵌合状態を示す図である。It is a figure which shows the fitting state of a front-end | tip fitting part and a side surface fitting part. 先端嵌合部と側面嵌合部の嵌合状態を説明する図である。It is a figure explaining the fitting state of a tip fitting part and a side fitting part. 第２水平回転体の他の例を説明する図である。It is a figure explaining other examples of the 2nd horizontal rotating body. Ｂ液供給系の他の例を示す図である。It is a figure which shows the other example of B liquid supply system.

次に、本発明の実施の形態における混合２液回転噴射装置（以下、単に「回転噴射装置」とも言う。）を図１〜図１２を参照して説明する。なお、図２中、第１水平回転体及び第２水平回転体は羽根形状を理解し易くするため、断面形状としていない。また、図３中、Ａ液噴射口８１ａ、８１ｂを有するＡ液配管は、全体図面が複雑となるため、その記載を省略した。 Next, a mixed two-liquid rotary injection device (hereinafter also simply referred to as “rotary injection device”) according to an embodiment of the present invention will be described with reference to FIGS. In FIG. 2, the first horizontal rotator and the second horizontal rotator are not cross-sectional shapes for easy understanding of the blade shape. Further, in FIG. 3, the A liquid pipe having the A liquid injection ports 81a and 81b is not shown because the entire drawing is complicated.

回転噴射装置１０は、固定側のロッド本体部２の先端に円錐状の先端回転体１を回転自在に付設したものである。円錐状の先端回転体１側が地中側である。本例ではロッド本体部２の先端部分を手元の本体部分より拡径部２３とし、水車構造体７を収容しているが、拡径形状は必須ではなく、任意の構成要素である。また、ロッド本体部２には、Ａ液供給管８を含むＡ液供給系と、Ｂ液供給管９を含むＢ液供給系を含む。 The rotary injection device 10 is configured such that a conical tip rotating body 1 is rotatably attached to the tip of a fixed rod body 2. The conical tip rotating body 1 side is the underground side. In this example, the distal end portion of the rod main body portion 2 is made to have a larger diameter portion 23 than the main body portion at hand, and the water turbine structure 7 is accommodated. However, the diameter expansion shape is not essential and is an optional component. The rod body 2 includes a liquid A supply system including a liquid A supply pipe 8 and a liquid B supply system including a liquid B supply pipe 9.

回転噴射装置１０において、円錐状の先端回転体１は、混合２液が噴射される斜め噴射孔１１を有する先端部１１１と、先端部１から反先端側に延びる中心軸１２に固定されるＡ液の横噴射流を羽根３１に受けて回転する第１水平回転体３と、Ｂ液の縦噴射流を羽根４１に受けて回転する第１水平回転体３の反先端側に隣接して形成される第２水平回転体４と、反先端側の端部に形成される端部嵌合部１９とを有する。 In the rotary injection device 10, the conical tip rotating body 1 is fixed to a tip portion 111 having an oblique injection hole 11 through which the mixed two liquids are jetted, and a central shaft 12 extending from the tip portion 1 to the opposite tip side. Formed adjacent to the opposite end of the first horizontal rotator 3 that rotates by receiving the horizontal jet flow of the liquid on the blades 31 and the first horizontal rotator 3 that rotates by receiving the vertical jet flow of the B liquid on the blades 41. The second horizontal rotating body 4 and an end fitting portion 19 formed at the end on the opposite end side.

円錐状の先端回転体１は、中実部である先端部１１１と中心軸１２周りの空間部１３を有し、空間部１３に第１水平回転体３と第２水平回転体４を収容する。空間部１３はＡ液とＢ液が混合する混合室となる。なお、第１水平回転体３と第２水平回転体４は先端部１から反先端側に延びる中心軸１２に固定されており、且つ中心軸１２は先端部の中実部１１１と一体であるため、第１水平回転体３と第２水平回転体４が回転することで、先端回転体１が回転することになる。中心軸１２の反先端側の端部は、隔壁５とは接続しておらず、フリー状態である。先端部の中実部１１１に形成される斜め噴射孔１１は、図２及び図９に示すように、先端回転体１の軸芯周りで、側面視で斜め上方に、且つ平面視で反回転方向に形成されている。すなわち、斜め噴射孔１１はその基端側の開口は空間部１３に接続し、先端の開口は外側（外気）に連通する貫通孔（トンネル孔）となっている。このため、空間部１３に２液圧力流が供給されると、これが斜め噴射孔１１を通って噴射され、その反動で先端回転体１は、噴射流の反噴射方向へ回転することになる。斜め噴射孔１１は先端回転体１に多数形成される。 The conical tip rotating body 1 has a tip portion 111 that is a solid portion and a space portion 13 around the central axis 12, and the first horizontal rotating body 3 and the second horizontal rotating body 4 are accommodated in the space portion 13. . The space 13 is a mixing chamber in which the A liquid and the B liquid are mixed. The first horizontal rotator 3 and the second horizontal rotator 4 are fixed to a central shaft 12 extending from the distal end portion 1 to the opposite end side, and the central shaft 12 is integral with the solid portion 111 of the distal end portion. For this reason, when the first horizontal rotating body 3 and the second horizontal rotating body 4 are rotated, the tip rotating body 1 is rotated. The end of the central shaft 12 on the opposite end side is not connected to the partition wall 5 and is in a free state. As shown in FIGS. 2 and 9, the oblique injection hole 11 formed in the solid portion 111 of the distal end is rotated obliquely upward in a side view and counter-rotated in a plan view around the axis of the distal end rotating body 1. It is formed in the direction. That is, the oblique injection hole 11 has a base end opening connected to the space 13 and a tip opening being a through hole (tunnel hole) communicating with the outside (outside air). For this reason, when a two-liquid pressure flow is supplied to the space 13, this is injected through the oblique injection holes 11, and the tip rotating body 1 rotates in the counter-injection direction of the injection flow by the reaction. A large number of oblique injection holes 11 are formed in the tip rotating body 1.

第１水平回転体３は、中心軸１２に固定されると共に、Ａ液の横噴射流を羽根３１に受けて回転するものである（図２参照）。本例の第１水平回転体３は、羽根３１の軸方向の両端に円板状の先端鍔部３２と、円板状の反先端鍔部３３を有する（図３参照）。すなわち、羽根３１は、所定の厚みを有する板状本体部３４の外周に形成され、両端の鍔部３２、３３で挟持されている。羽根３１形状は本例では、径方向に延びる小板状物である（図７参照）。なお、第１水平回転体３において、羽根形状は、上記小板状物に限定されず、Ａ液の横噴射流を受けて回転するものであれば、種々のものが適用可能である。 The first horizontal rotator 3 is fixed to the central shaft 12 and rotates by receiving the lateral jet flow of the liquid A on the blades 31 (see FIG. 2). The first horizontal rotator 3 of the present example has a disc-shaped tip flange 32 and a disk-shaped anti-tip flange 33 at both axial ends of the blade 31 (see FIG. 3). That is, the blade 31 is formed on the outer periphery of the plate-like main body 34 having a predetermined thickness, and is sandwiched between the flanges 32 and 33 at both ends. In this example, the shape of the blade 31 is a small plate-like object extending in the radial direction (see FIG. 7). In the first horizontal rotator 3, the blade shape is not limited to the above-mentioned small plate-like object, and various shapes can be applied as long as they rotate by receiving the lateral jet flow of the liquid A.

第２水平回転体４は、Ｂ液の縦噴射流を羽根４１に受けて回転する第１水平回転体３の反先端側に隣接して形成されるものである。本例の第２水平回転体４は、羽根４１の軸方向の両端に円板状の先端鍔部４２と、円板状の反先端鍔部４３を有する。すなわち、羽根４１は、所定の厚みを有する板状本体部４５の外周に形成され、両端の鍔部４２、４３で挟持されている（図２及び図６（Ａ）参照）。羽根４１形状は本例では、側面視で先端部がＢ液の噴射側に屈曲した変形羽根である。すなわち、羽根４１は、反先端側の鍔部４３から起立する起立部４１１と、起立部４１１の先端からＢ液の噴射側に屈曲する屈曲部４１２とからなり、屈曲部４１２に縦噴射流を受けるものである（図６（Ｂ）参照）。なお、第２水平回転体４において、羽根形状は、上記屈曲羽根に限定されず、Ｂ液の縦噴射流を受けて回転するものであれば、種々のものが適用可能である。また、反先端側の鍔部４３は、先端鍔部４２と同じ外径のものであれば、上下に貫通するＢ液が通る噴射孔４４を鍔部４３の周方向に多数有するものである。また、反先端側の鍔部４３は、図６の板状本体部４５より少し大きめの径とし、Ｂ液の噴射流がそのまま羽根４１に当たるようにしてもよい。この場合、上下に貫通する噴射孔４４を省略できる。 The second horizontal rotator 4 is formed adjacent to the opposite end side of the first horizontal rotator 3 that rotates by receiving the vertical jet flow of the B liquid on the blades 41. The second horizontal rotator 4 of this example has a disk-shaped tip flange 42 and a disk-shaped anti-tip flange 43 at both ends of the blade 41 in the axial direction. That is, the blade | wing 41 is formed in the outer periphery of the plate-shaped main-body part 45 which has predetermined | prescribed thickness, and is clamped by the collar parts 42 and 43 of both ends (refer FIG.2 and FIG.6 (A)). In this example, the shape of the blade 41 is a modified blade whose tip is bent toward the B liquid ejection side in a side view. That is, the blade 41 includes a standing part 411 standing up from the flange part 43 on the opposite end side, and a bending part 412 bent from the tip of the standing part 411 to the B liquid injection side, and a vertical jet flow is applied to the bending part 412. (See FIG. 6B). In the second horizontal rotating body 4, the blade shape is not limited to the bent blade, and various shapes can be applied as long as the blade rotates by receiving the vertical jet flow of the B liquid. Further, if the flange 43 on the opposite end side has the same outer diameter as the tip flange 42, it has a large number of injection holes 44 in the circumferential direction of the flange 43 through which the B liquid penetrates vertically. Further, the flange portion 43 on the opposite end side may have a slightly larger diameter than the plate-like main body portion 45 in FIG. 6 so that the jetted liquid B hits the blade 41 as it is. In this case, the injection hole 44 penetrating vertically can be omitted.

先端回転体１において、端部嵌合部１９は、先端回転体１の反先端側の端部に形成されるものである。すなわち、端部嵌合部１９は、円錐状（傘状）の広がった先端の周方向に形成されるものであり、先端から内側に屈曲して水平部１６１を形成すると共に、水平部１６１から上方に起立する起立部１６２を有する（図１１参照）。これにより、ロッド本体部２の側面で側面嵌合部２３０と回転自在に嵌合すると共に、２液の圧力により先端回転体１が先端側に押され、ロッド本体部２から脱落することを防止する。 In the tip rotating body 1, the end fitting portion 19 is formed at the end of the tip rotating body 1 on the opposite end side. That is, the end fitting portion 19 is formed in the circumferential direction of the conical (umbrella-shaped) widened tip, bent inward from the tip to form the horizontal portion 161, and from the horizontal portion 161. It has the standing part 162 which stands up (refer FIG. 11). As a result, the side surface of the rod body 2 is rotatably fitted with the side surface fitting portion 230, and the tip rotating body 1 is prevented from being pushed out by the pressure of the two liquids and falling off the rod body 2. To do.

本例の端部嵌合部１９は、先端回転体１の円錐状を形成する外壁１５に対して、螺子１８止めされる外壁１５とは別部材の環状体であって、環状の水平板部１６１の外端部には、上方に起立する三角形断面の突起部１６を形成し、突起部１６より少し離れた内側には上方に延びる環状立壁１６２を形成したものである。この２つの部材を螺子１８で止めれば、端部嵌合部１９を形成することができる（図１０参照）。また、螺子１８を外し、２つの部材に分ければ、ロッド本体部２から先端回転体１を容易に外すことができ、ロッド本体部２の先端内部及び先端回転体１の内部の水洗浄が可能となる。 The end fitting portion 19 of this example is an annular body that is a separate member from the outer wall 15 that is screwed to the outer wall 15 that forms the conical shape of the tip rotating body 1, and is an annular horizontal plate portion A protruding portion 16 having a triangular cross-section standing upward is formed on the outer end portion of 161, and an annular standing wall 162 extending upward is formed on the inner side slightly apart from the protruding portion 16. If these two members are fastened with screws 18, an end fitting portion 19 can be formed (see FIG. 10). Further, if the screw 18 is removed and divided into two members, the distal end rotating body 1 can be easily removed from the rod body 2 and the inside of the tip of the rod body 2 and the inside of the distal end rotating body 1 can be washed with water. It becomes.

回転噴射装置１０において、側面嵌合部２３０は、ロッド本体部１の先端側の側面で端部嵌合部１９と回転自在に嵌合するものである。側面嵌合部２３０は、ロッド本体部１の周壁面から外側に突出する環状水平部２３１と、環状水平部２３１の外端から下方に延びる環状垂壁２３２と、環状垂壁２３２から少し離れた内側には下方に延びる内側環状垂壁２３３とからなる。端部嵌合部１９と側面嵌合部２３０は、環状立壁１６２が２つの環状垂壁２３２間に位置するように配置すればよい（図１０参照）。これにより、ロッド本体部２に対して先端回転体１は回転自在であり、また、先端回転体１は使用時、常に２液の圧力により先端方向に押されており、両者の嵌合が外れることはない。 In the rotary injection device 10, the side surface fitting portion 230 is fitted to the end portion fitting portion 19 in a freely rotatable manner on the side surface on the distal end side of the rod main body portion 1. The side fitting portion 230 is slightly separated from the annular horizontal portion 231 protruding outward from the peripheral wall surface of the rod main body portion 1, the annular vertical wall 232 extending downward from the outer end of the annular horizontal portion 231, and the annular vertical wall 232. An inner annular vertical wall 233 extending downward is formed on the inner side. What is necessary is just to arrange | position the edge part fitting part 19 and the side surface fitting part 230 so that the cyclic | annular standing wall 162 may be located between the two cyclic | annular vertical walls 232 (refer FIG. 10). As a result, the tip rotating body 1 is rotatable with respect to the rod main body 2, and the tip rotating body 1 is always pushed in the tip direction by the pressure of two liquids when in use, and the fitting of both is released. There is nothing.

端部嵌合部１９と側面嵌合部２３０は、側面嵌合部２３０の先端の環状垂壁２３２が端部嵌合部１９の突起部１６の内側の傾斜近傍の水平部１６１に位置する（図１０の状態）のが正位置である。この状態であれば、先端回転体１とロッド本体部２の中心が同じとなり、先端回転体１の回転が振れることなく、安定する。また、先端回転体１とロッド本体部２の嵌め込みが、図１１のように、偏心していたとしても、２液の圧力等により、先端回転体１が先端側に押されると、側面嵌合部２３０の環状垂壁２３２が端部嵌合部１９の突起部１６の内側の傾斜面に当たり、正位置に戻るため、先端回転体１とロッド本体部２は軸芯が同じとなり、回転が安定する。 In the end fitting part 19 and the side fitting part 230, the annular hanging wall 232 at the tip of the side fitting part 230 is positioned in the horizontal part 161 near the inclination inside the protrusion 16 of the end fitting part 19 ( The state in FIG. 10) is the normal position. In this state, the center of the tip rotator 1 and the rod body 2 are the same, and the tip rotator 1 is stabilized without shaking. Moreover, even if the fitting of the tip rotating body 1 and the rod body 2 is eccentric as shown in FIG. 11, when the tip rotating body 1 is pushed to the tip side by the pressure of two liquids, the side fitting portion Since the annular vertical wall 232 of 230 contacts the inclined surface inside the protrusion 16 of the end fitting portion 19 and returns to the normal position, the tip rotating body 1 and the rod main body 2 have the same axis, and the rotation is stabilized. .

回転噴射装置１０において、ロッド本体部２には、先端回転体１の内室（空間部）１３と区画する隔壁５を有する。隔壁５は、先端回転体１の内室１３内に満たされる２液混合物と、ロッド本体部２の先端の内室２２に満たされたＢ液とを区画すると共に、Ｂ液の縦噴射流を供給するＢ液噴射口６を形成する機能を有する。また、隔壁５にはＡ液供給管８が貫通している。 In the rotary injection device 10, the rod main body portion 2 has a partition wall 5 that is partitioned from an inner chamber (space portion) 13 of the tip rotating body 1. The partition wall 5 divides the two-liquid mixture filled in the inner chamber 13 of the tip rotating body 1 and the B liquid filled in the inner chamber 22 at the tip of the rod main body 2, and generates a vertical jet flow of the B liquid. It has a function of forming the B liquid injection port 6 to be supplied. The A liquid supply pipe 8 penetrates the partition wall 5.

回転噴射装置１０において、Ｂ液噴射口６は、ロッド本体部２から供給されるＢ液を縦噴射流として第２水平回転体４の羽根に噴射するものである。Ｂ液の縦噴射流は、本例では、図６に示すように、中心軸１２を挟んで対峙する両側にＢ液噴射口６を形成し、２つのＢ液噴射口６から交互にＢ液を噴射するものである。 In the rotary injection device 10, the B liquid injection port 6 is configured to inject the B liquid supplied from the rod body 2 to the blades of the second horizontal rotator 4 as a vertical injection flow. In this example, as shown in FIG. 6, the B liquid jets are formed on both sides facing each other across the central axis 12, and the B liquid jets are alternately supplied from the two B liquid jets 6. Is to inject.

すなわち、回転噴射装置１０は、水車構造体７を更に備えるものである。水車構造体７は、Ｂ液の圧流を水車羽根７３に受けて回転する水車軸であって左右両端の中の少なくとも一方の端、図１では両端７１１が開口すると共に、横外管７２に回転自在で密に嵌合し、周壁面には回転方向及び軸方向に対して共に位相差がある第１貫通孔７６ａと第２貫通孔７６ｂを有する円管状の横内管７１と、水車羽根７３と横内管７１を囲むものであり、左右両端の中の少なくとも一方の端、図１では両端７２１が開口すると共に、先端側の周壁であって且つ横内管の第１貫通孔７６ａと第２貫通孔７６ｂに対応する位置に第１噴射口７５ａと第２噴射口７５ｂを有する円管状の横外管７２と、を有するものである。そして、Ｂ液噴射口６を有するＢ液短管６１は、ロッド本体部２の隔壁５の、第１噴射口７５ａと第２噴射口７５ｂに対応する位置に形成される。また、Ｂ液供給手段に接続するＢ液配管９は、水車構造体７の横内管７１と横外管７２で囲まれるＢ液流路に接続されている。水車構造体７において、横外管７２はロッド本体部２に固定部材７４１で固定され、Ｂ液短管６１は隔壁５に固定されており、横内管７１は横外管７２内で回転するものである。 That is, the rotary injection device 10 further includes the water wheel structure 7. The turbine structure 7 is a turbine shaft that rotates by receiving the pressure flow of the B liquid on the turbine blades 73. At least one of the left and right ends, both ends 711 in FIG. A circular lateral inner pipe 71 having a first through hole 76a and a second through hole 76b, which are freely and closely fitted and have a phase difference with respect to the rotational direction and the axial direction on the peripheral wall surface, and a turbine blade 73 Surrounding the horizontal inner pipe 71, at least one of the left and right ends, in FIG. 1, both ends 721 open, and is a peripheral wall on the tip side, and the first through hole 76a and the second through hole of the horizontal inner pipe And a circular transverse outer tube 72 having a first injection port 75a and a second injection port 75b at a position corresponding to 76b. And the B liquid short tube 61 which has the B liquid injection port 6 is formed in the partition 5 of the rod main-body part 2 in the position corresponding to the 1st injection port 75a and the 2nd injection port 75b. Further, the B liquid pipe 9 connected to the B liquid supply means is connected to a B liquid flow path surrounded by the horizontal inner pipe 71 and the horizontal outer pipe 72 of the water turbine structure 7. In the water turbine structure 7, the horizontal outer tube 72 is fixed to the rod body 2 by a fixing member 741, the B liquid short tube 61 is fixed to the partition wall 5, and the horizontal inner tube 71 rotates within the horizontal outer tube 72. It is.

水車構造体７は、ロッド本体部２の先端の隔壁５と反先端側の隔壁２３１とで区画された室２２に収容されている。また、横外管７２には、水車羽根７３を通過したＢ液が排出されるＢ液排出口７４２が形成されている。Ｂ液排出口７４２は、Ｂ液流入口７４３から流れ方向に出来る限り、遠い位置が好ましい。すなわち、水車羽根７３にＢ液の圧流を送った後、水車軸である横内管７１を回転させ、Ｂ液排出口７４２から流出したＢ液は、ロッド本体部２のＢ液溜まり室２２に流れ、横内管７１の横側開口から横内管７１に入り込み、第１貫通孔７６ａまたは第２貫通孔７６ｂを介して、第１噴射口７５ａと第２噴射口７５ｂからＢ液短管６１に流れ、Ｂ液短管６１のＢ液噴射口６から交互に縦噴射される。 The turbine structure 7 is accommodated in a chamber 22 defined by a partition wall 5 at the tip of the rod main body 2 and a partition wall 231 on the opposite end side. Further, the lateral outer pipe 72 is formed with a B liquid discharge port 742 through which the B liquid that has passed through the water turbine blade 73 is discharged. The B liquid discharge port 742 is preferably located as far as possible from the B liquid inflow port 743 in the flow direction. That is, after sending the B liquid pressure flow to the water turbine blade 73, the horizontal inner pipe 71 that is the water wheel shaft is rotated, and the B liquid flowing out from the B liquid discharge port 742 flows into the B liquid storage chamber 22 of the rod body 2. , Enters the horizontal inner pipe 71 from the lateral opening of the horizontal inner pipe 71, flows from the first injection hole 75a and the second injection hole 75b to the B liquid short pipe 61 through the first through hole 76a or the second through hole 76b, Vertical injection is alternately performed from the B liquid injection port 6 of the B liquid short pipe 61.

Ｂ液短管６１のＢ液噴射口６からＢ液が交互に縦噴射されるのは、第１貫通孔７６ａと第２貫通孔７６ｂが、横内管７１の周壁面に回転方向（周方向）及び軸方向に対して共に、位相差が生じるように形成されているためである（以下、「Ｂ液交互縦噴射機構」とも言う。）。この回転方向と軸方向は、横内管７１の回転方向と軸方向を意味する。すなわち、第１貫通孔７６ａ及び第２貫通孔７６ｂは、横内管７１の周壁面において、周方向及び軸方向共に、互い違いに形成されている。 The B liquid is alternately jetted vertically from the B liquid injection port 6 of the B liquid short pipe 61 because the first through hole 76a and the second through hole 76b are rotated in the circumferential wall surface of the horizontal inner pipe 71 (circumferential direction). This is because a phase difference is generated in both the axial direction and the axial direction (hereinafter also referred to as “B liquid alternate vertical injection mechanism”). The rotation direction and the axial direction mean the rotation direction and the axial direction of the horizontal inner pipe 71. That is, the first through hole 76a and the second through hole 76b are alternately formed in the circumferential wall surface of the horizontal inner pipe 71 in both the circumferential direction and the axial direction.

また、図４に示すように、第１貫通孔７６ａ及び第２貫通孔７６ｂは、それぞれ、回転方向に向けて漸次孔幅が拡大する三角形状孔であれば、第１貫通孔７６ａ及び第２貫通孔７６ｂからの噴射が、回転に連れて噴射圧が最高圧から漸次低下する変動圧流を供給でき、第２水平回転体４に対して、ゆっくりとした安定した回転力を与えることができる。第１貫通孔７６ａ及び第２貫通孔７６ｂは、それぞれ周方向に複数形成してもよい（図４（Ｂ）ではそれぞれ２個である。）。なお、図４（Ａ）は一部を破断した図であり、説明のし易さから、水車羽根７３及びそれを囲むケーシング部７４の描写を省略しているが、実際には水車羽根７３やケーシング部７４は、第１貫通孔７６ａと第２貫通孔７６ｂの間（図４（Ａ）中、中心の破断部）に形成されている。 As shown in FIG. 4, the first through hole 76 a and the second through hole 76 b are triangular holes whose width gradually increases in the rotation direction, respectively. The injection from the through-hole 76b can supply a fluctuating pressure flow in which the injection pressure gradually decreases from the maximum pressure with rotation, and a slow and stable rotational force can be applied to the second horizontal rotator 4. A plurality of first through holes 76a and second through holes 76b may be formed in the circumferential direction (two in FIG. 4B). FIG. 4A is a partially broken view, and the illustration of the turbine blade 73 and the casing portion 74 surrounding it is omitted for ease of explanation. The casing portion 74 is formed between the first through hole 76a and the second through hole 76b (the central fracture portion in FIG. 4A).

そして、固定側の横外管７２の先端側の周壁面には、第１噴射口７５ａと第２噴射口７５ｂが形成され、更に第１噴射口７５ａと第２噴射口７５ｂと対向する位置には、Ｂ液噴射口６を先端に有するＢ液短管６１が配設されている。Ｂ液短管６１は隔壁５に固定され、Ｂ液噴射口６は、先端回転体１に収容されている第２水平回転体４の羽根に縦噴流を噴射するように向いている。 The first injection port 75a and the second injection port 75b are formed in the peripheral wall surface on the distal end side of the fixed lateral outer tube 72, and further, at a position facing the first injection port 75a and the second injection port 75b. The B liquid short tube 61 which has the B liquid injection port 6 in the front-end | tip is arrange | positioned. The B liquid short tube 61 is fixed to the partition wall 5, and the B liquid injection port 6 is directed to inject a vertical jet onto the blades of the second horizontal rotating body 4 accommodated in the tip rotating body 1.

上記Ｂ液交互縦噴射機構の作用を説明する。先ず、水車羽根７３にＢ液圧流を受けて横内管７１が回転する。横内管７１の回転により、第１貫通孔７６ａと第１噴射口７５ａが対向する位置にくる。第１貫通孔７６ａと第１噴射口７５ａが重なる初期では、第１貫通孔７６ａの孔幅が大であるため、Ｂ液の供給圧は大となり（図４（Ｃ）のＰ_１ｍａｘ）、第２水平回転体４への高圧噴射が可能となる。横内管７１の回転が進行するにつれて、第１貫通孔７６ａの孔幅が漸次狭まるため、Ｂ液の供給圧が漸次小となる。なお、第１貫通孔７６ａと第１噴射口７５ａが連通している間、第２貫通孔７６ｂと第２噴射口７５ｂは連通していない。このため、一対のＢ液噴射口６において、交互の噴射となる。 The operation of the B liquid alternate vertical injection mechanism will be described. First, the horizontal inner pipe 71 rotates by receiving the B hydraulic pressure flow on the water turbine blade 73. Due to the rotation of the horizontal inner pipe 71, the first through-hole 76a and the first injection port 75a come to a position facing each other. In the initial stage where the first through hole 76a and the first injection port 75a overlap, the supply width of the B liquid becomes large (P ₁ max in FIG. 4C) because the hole width of the first through hole 76a is large. High-pressure injection to the second horizontal rotator 4 is possible. As the rotation of the horizontal inner pipe 71 proceeds, the hole width of the first through hole 76a gradually decreases, so that the supply pressure of the B liquid gradually decreases. Note that while the first through hole 76a and the first injection port 75a are in communication, the second through hole 76b and the second injection port 75b are not in communication. For this reason, in a pair of B liquid injection ports 6, it becomes alternate injection.

更に、横内管７１の回転が進行すると、今後は、第２貫通孔７６ｂと第２噴射口７５ｂが対向する位置にくる。第２貫通孔７６ｂと第２噴射口７５ｂが重なる初期では、同様に、第２貫通孔７６ｂの孔幅が大であるため、Ｂ液の供給圧は大となり（図４（Ｃ）のＰ_２ｍａｘ）、第２水平回転体４への高圧噴射が可能となる。横内管７１の回転が進行するにつれて、第２貫通孔７６ｂの孔幅が漸次狭まるため、Ｂ液の供給圧が漸次小となる。なお、第２貫通孔７６ｂと第２噴射口７５ｂが連通している間、第１貫通孔７６ａと第１噴射口７５ａは連通していない。このため、一対のＢ液噴射口６において、交互の噴射となる。更に、横内管７１の回転が進行すると、第１貫通孔７６ａと第１噴射口７５ａの重なりとなり、前記同様の繰り返しとなる。また、第１貫通孔７５ａと第２貫通孔７５ｂは、第２水平回転体４の中心軸１２を挟んで対峙する側にあるため、第２水平回転体４は、右翼位置に最大圧噴射から漸次減圧噴射となる変圧噴射を受け、次いで今度は左翼位置に同様の圧力変動噴射となる交互噴射を受け、ゆっくり且つ円滑な回転となる。 Furthermore, when the rotation of the horizontal inner pipe 71 proceeds, the second through hole 76b and the second injection port 75b will come to face each other in the future. Similarly, in the initial stage where the second through hole 76b and the second injection port 75b overlap each other, since the hole width of the second through hole 76b is large, the supply pressure of the liquid B becomes large (P _{2 in} FIG. 4C). max), high-pressure injection to the second horizontal rotating body 4 becomes possible. As the rotation of the horizontal inner pipe 71 proceeds, the hole width of the second through hole 76b gradually decreases, so that the supply pressure of the B liquid gradually decreases. In addition, while the 2nd through-hole 76b and the 2nd injection port 75b are connecting, the 1st through-hole 76a and the 1st injection port 75a are not connecting. For this reason, in a pair of B liquid injection ports 6, it becomes alternate injection. Further, when the rotation of the horizontal inner tube 71 proceeds, the first through hole 76a and the first injection port 75a overlap with each other, and the same repetition is performed. Further, since the first through-hole 75a and the second through-hole 75b are on the side facing each other with the central axis 12 of the second horizontal rotator 4 in between, the second horizontal rotator 4 starts from the maximum pressure injection at the right wing position. The variable pressure injection that is gradually reduced pressure injection is received, and then the alternate injection that is the same pressure fluctuation injection is received at the left wing position, and the rotation is slow and smooth.

Ｂ液交互縦噴射機構において、横内管７１は図４の実施の形態例に限定されず、図５のような横内管７１ａであってもよい。すなわち、横内管７１ａは、第１貫通孔７６ａ〜第４貫通孔７６ｄを形成したものである。第１貫通孔７６ａ〜第４貫通孔７６ｄも同様に、周方向及び軸方向共に、交互の位置となるように形成したものである。この場合、横外管７２に形成される噴射口は、第１噴射口７５ａ〜第４噴射口７５ｄの４つとなり、対応するＢ液短管も６１ａ〜６１ｄの４つとなり、設置位置は、中心軸１２を挟んで左翼側２つ、右翼側２つとなる。なお、図５においても、図４と同様に、説明のし易さから、水車羽根７３及びそれを囲むケーシング部７４の描写を省略しているが、実際には水車羽根７３やケーシング部７４は、第２貫通孔７６ｂと第３貫通孔７６ｃの間（図４（Ａ）中、中心の破断部）に形成されている。 In the B liquid alternate vertical injection mechanism, the horizontal inner pipe 71 is not limited to the embodiment shown in FIG. 4, and may be a horizontal inner pipe 71a as shown in FIG. That is, the horizontal inner pipe 71a is formed with a first through hole 76a to a fourth through hole 76d. Similarly, the first through hole 76a to the fourth through hole 76d are formed so as to be in alternate positions in both the circumferential direction and the axial direction. In this case, there are four injection ports formed in the lateral outer tube 72, the first injection port 75a to the fourth injection port 75d, the corresponding B liquid short tubes are also four of 61a to 61d, and the installation position is There are two left wing sides and two right wing sides across the central shaft 12. In FIG. 5, as in FIG. 4, the illustration of the water turbine blade 73 and the casing portion 74 surrounding it is omitted for ease of explanation, but actually the water turbine blade 73 and the casing portion 74 are not shown. The second through-hole 76b and the third through-hole 76c are formed between the second through-hole 76b and the third through-hole 76c (the fracture portion at the center in FIG. 4A).

なお、図５において、４つのＢ液短管６１ａ〜６１ｄの内、Ｂ液短管６１ａと６１ｂのいずれか一方と、Ｂ液短管６１ｃと６１ｄのいずれか一方を直管ではなく、屈曲管として、Ｂ液噴射口６が図６の符号ｓとｔの位置となるように配設することもできる。この場合、Ｂ液噴射口６は、第２水平回転体４の周方向において、９０度毎に設置されることになる。また、図４（Ａ）において、２つのＢ液短管６１に対して、周方向の９０度の位置に、新たに２つのＢ液短管６１を設けてもよい。この場合、新たな２つのＢ液短管６１は、固定部材等で拡径部２３の外壁に固定されと共に、屈曲管として、Ｂ液噴射口６が図６の符号ｓとｔの位置となるように配設することもできる。この場合、Ｂ液噴射口６は、第２水平回転体４の周方向において、９０度毎に設置されることになる。 In FIG. 5, of the four B liquid short pipes 61a to 61d, one of the B liquid short pipes 61a and 61b and one of the B liquid short pipes 61c and 61d are not straight pipes but bent tubes. As an alternative, the B liquid injection port 6 may be disposed so as to be at the positions of symbols s and t in FIG. In this case, the B liquid ejection port 6 is installed every 90 degrees in the circumferential direction of the second horizontal rotator 4. In FIG. 4A, two B liquid short tubes 61 may be newly provided at a position of 90 degrees in the circumferential direction with respect to the two B liquid short tubes 61. In this case, the two new B liquid short tubes 61 are fixed to the outer wall of the enlarged diameter portion 23 by a fixing member or the like, and the B liquid injection port 6 is located at the positions s and t in FIG. It can also be arranged. In this case, the B liquid ejection port 6 is installed every 90 degrees in the circumferential direction of the second horizontal rotator 4.

回転噴射装置１０において、Ｂ液噴射口に接続するＢ液供給系は、Ｂ液供給手段に接続するＢ液配管９と、水車構造体７の横内管７１と横外管７２で囲まれる水車羽根７３を含むＢ液流路と、横内管７１内と、ロッド本体部２の先端の水車構造体７周りの内室２２と、Ｂ液噴射口６を有するＢ液短管６１からなる。 In the rotary injection device 10, the B liquid supply system connected to the B liquid injection port includes the B liquid pipe 9 connected to the B liquid supply means, and the water turbine blade surrounded by the horizontal inner pipe 71 and the horizontal outer pipe 72 of the water turbine structure 7. The B liquid flow path including 73, the horizontal inner pipe 71, the inner chamber 22 around the water wheel structure 7 at the tip of the rod body 2, and the B liquid short pipe 61 having the B liquid injection port 6.

回転噴射装置１０において、Ａ液供給系は、第１水平回転体３の羽根３１に側面からＡ液を噴射するＡ液噴射口８１ａ、８１ｂを有する一対のＡ液配管８ａ、８ｂを含むものである。一対のＡ液配管８ａ、８ｂは、Ａ液供給源と接続するＡ液供給配管８から分岐した配管であり、図７に示すように、中心軸１２から径方向に少し離れ、且つその径方向の垂直方向に少し離れた位置にＡ液噴射口８１ａ、８１ｂを配置したものである。この位置であれば、Ａ液噴射口８１ａ、８１ｂが、第１水平回転体３の羽根３１に対面するため、都合がよい。すなわち、Ａ液噴射口８１ａ、８１ｂから噴射されるＡ液の横噴流は、直接、羽根３１に当たることになり、第１水平回転体３を中心軸１２ごと、効率よく回転させることができる。 In the rotary injection device 10, the A liquid supply system includes a pair of A liquid pipes 8 a and 8 b having A liquid injection ports 81 a and 81 b for injecting A liquid from the side surfaces to the blades 31 of the first horizontal rotator 3. The pair of A liquid pipes 8a and 8b are pipes branched from the A liquid supply pipe 8 connected to the A liquid supply source. As shown in FIG. A liquid injection ports 81a and 81b are arranged at positions slightly apart in the vertical direction. If it is this position, since the A liquid injection port 81a, 81b faces the blade | wing 31 of the 1st horizontal rotary body 3, it is convenient. That is, the lateral jet flow of the liquid A ejected from the liquid A ejection ports 81 a and 81 b directly hits the blade 31, and the first horizontal rotating body 3 can be efficiently rotated along the central axis 12.

回転噴射装置１０において、Ａ液としては、３号ケイ酸ソーダと水の混合液からなる主剤液が挙げられる。また、Ｂ液としては、硬化剤、ポルトランドセメント及び水からなる硬化剤液が挙げられる。Ａ液とＢ液は混合されて所定の時間経過後ゲル化する。なお、本発明において、Ａ液とＢ液は、単に薬液として２液を使用することを示したものであり、Ａ液供給系がＢ液供給系となり、Ｂ液供給系がＡ液供給系となってもよい。 In the rotary injection device 10, as the liquid A, a main agent liquid composed of a mixed liquid of No. 3 sodium silicate and water can be mentioned. Moreover, as B liquid, the hardening | curing agent liquid which consists of a hardening | curing agent, Portland cement, and water is mentioned. Liquid A and liquid B are mixed and gelled after a predetermined time. In the present invention, the A liquid and the B liquid simply indicate that two liquids are used as the chemical liquid, the A liquid supply system becomes the B liquid supply system, and the B liquid supply system becomes the A liquid supply system. It may be.

次に、回転噴射装置１０を用いた施工方法の一例について説明する。回転噴射装置１０を準備する。なお、ロッド本体部２のＡ液供給配管８には、地上のＡ液貯留槽及びポンプ等のＡ液供給源と、ロッド本体部２のＢ液供給配管９には、地上のＢ液貯留槽及びポンプ等のＢ液供給源とホース等で接続しておく、本施工に先立ち、公知の削孔装置を使用し、所定の地盤に対して所定深度まで削孔９１を行う。次いで、回転噴射装置１０を削孔９１に所定の深度まで挿入する。ロッド本体部２と先端回転体１との嵌合は図１１に示すような、正位置の嵌合でなくともよい。次いで、Ａ液とＢ液の供給を開始する。Ａ液は、Ａ液供給配管８を通り、分岐管８ａ、８ｂを通り、Ａ液噴射口８１ａ、８１ｂから第１水平回転体３の羽根３１に横噴射される。第１水平回転体３はＡ液の横噴射流により、中心軸１２と共に、回転する。中心軸１２は、先端回転体１の回転軸でもあり、従って、先端回転体１は、ロッド本体部２に対して、矢印Ｘ方向に回転する。なお、Ａ液は第１水平回転体３の羽根３１に横噴射された後、先端回転体１の空間部１３内に流入する。 Next, an example of a construction method using the rotary injection device 10 will be described. The rotary injection device 10 is prepared. The A liquid supply pipe 8 of the rod main body 2 has an A liquid supply source such as a ground A liquid storage tank and a pump, and the B liquid supply pipe 9 of the rod main body 2 has a ground B liquid storage tank. Prior to the main construction, which is connected to a B liquid supply source such as a pump with a hose or the like, a known hole drilling device is used to drill a hole 91 to a predetermined depth to a predetermined depth. Next, the rotary injection device 10 is inserted into the hole 91 to a predetermined depth. The fitting between the rod main body 2 and the tip rotating body 1 may not be a fitting in the normal position as shown in FIG. Subsequently, supply of the A liquid and the B liquid is started. The A liquid passes through the A liquid supply pipe 8, passes through the branch pipes 8 a and 8 b, and is laterally injected from the A liquid injection ports 81 a and 81 b onto the blades 31 of the first horizontal rotator 3. The 1st horizontal rotary body 3 rotates with the center axis | shaft 12 by the lateral injection flow of A liquid. The central shaft 12 is also the rotational axis of the tip rotating body 1, and therefore the tip rotating body 1 rotates in the arrow X direction with respect to the rod main body 2. The liquid A is injected laterally onto the blades 31 of the first horizontal rotator 3 and then flows into the space 13 of the tip rotator 1.

Ｂ液は、Ｂ液供給配管９を通り、水車構造体７の水車羽根７３流路に流れる。すなわち、Ｂ液の圧流により水車構造体７の水車軸、すなわち、横内管７１が回転する。横内管７１を回転させたＢ液は、Ｂ液排出口７４２からＢ液溜まり室２２に流れ、横内管７１の横側開口から横内管７１に入り込み、第１貫通孔７６ａまたは第２貫通孔７６ｂを介して、第１噴射口７５ａと第２噴射口７５ｂからＢ液短管６１に流れ、Ｂ液短管６１のＢ液噴射口６から交互に縦噴射され、第２水平回転体４を回転させる。Ｂ液がＢ液噴射口６から交互に縦噴射される機構と作用及び縦噴射から圧力変動噴射される機構と作用は、前述の通りである。 The B liquid flows through the B liquid supply pipe 9 and the water turbine blade 73 of the water turbine structure 7. That is, the water wheel shaft of the water turbine structure 7, that is, the horizontal inner pipe 71 is rotated by the pressure flow of the B liquid. The B liquid that has rotated the horizontal inner pipe 71 flows from the B liquid discharge port 742 to the B liquid reservoir chamber 22, enters the horizontal inner pipe 71 from the lateral opening of the horizontal inner pipe 71, and enters the first through hole 76a or the second through hole 76b. Then, the liquid flows from the first injection port 75a and the second injection port 75b to the B liquid short tube 61, and is alternately injected vertically from the B liquid injection port 6 of the B liquid short tube 61 to rotate the second horizontal rotating body 4. Let The mechanism and the action in which the B liquid is alternately injected vertically from the B liquid injection port 6 and the mechanism and the action in which the pressure fluctuation is injected from the vertical injection are as described above.

上記のように、Ａ液は、Ａ液の横噴射流により第１水平回転体３を回転させ、Ｂ液は、Ｂ液の縦噴射流により第２水平回転体４を回転させる。第１水平回転体３及び第２水平回転体４共に、中心軸１２に固定されており、第１水平回転体３及び第２水平回転体４の回転により、先端回転体１がロッド本体部２に対して回転する。なお、先端回転体１とロッド本体部２の嵌合は、図１１のような正位置ではない嵌合であっても、Ａ液とＢ液の圧流により、先端回転体１はロッド本体部２に対して、先端側に移動するため、端部嵌合部１９の突起部１６の規制により、先端回転体１とロッド本体部２は、図１０のような、正位置を採ることになる。 As described above, the A liquid rotates the first horizontal rotator 3 by the lateral jet flow of the A liquid, and the B liquid rotates the second horizontal rotator 4 by the vertical jet flow of the B liquid. Both the first horizontal rotator 3 and the second horizontal rotator 4 are fixed to the central shaft 12, and the tip rotator 1 is moved to the rod body 2 by the rotation of the first horizontal rotator 3 and the second horizontal rotator 4. Rotate against. In addition, even if the fitting of the tip rotating body 1 and the rod main body 2 is not the normal position as shown in FIG. On the other hand, since it moves to the front end side, the front end rotating body 1 and the rod main body 2 assume the normal positions as shown in FIG. 10 due to the restriction of the protrusion 16 of the end fitting portion 19.

一方、第１水平回転体３を回転させたＡ液と第２水平回転体４を回転させたＢ液は、共に、先端回転体１の内部空間１３内に存在する。そして、Ａ液は横方向からの流入、Ｂ液は縦方向からの流入であり、更に、第１水平回転体３の回転と第２水平回転体の回転が撹拌手段となるため、２液は効率よく、撹拌されて混合液となる。Ａ液とＢ液の２液混合物は、依然として加圧された状態であるため、先端回転体１に形成された斜め噴射孔１１を通って外部へ噴射され、その反動で先端回転体１は、噴射流の反噴射方向へ回転する。従って、この回転噴射を行いながら、ロッド本体部２を地表側にゆっくり引き上げれば、地中に２液混合物の円柱の固結体を構築することができる。 On the other hand, the liquid A obtained by rotating the first horizontal rotator 3 and the liquid B obtained by rotating the second horizontal rotator 4 are both present in the internal space 13 of the tip rotator 1. The liquid A is inflow from the horizontal direction, the liquid B is inflow from the vertical direction, and the rotation of the first horizontal rotator 3 and the rotation of the second horizontal rotator are the stirring means. Efficiently stirred into a mixture. Since the two-liquid mixture of liquid A and liquid B is still in a pressurized state, it is ejected to the outside through the oblique injection holes 11 formed in the tip rotating body 1, and the tip rotating body 1 is It rotates in the direction opposite to the jet flow. Accordingly, if the rod body 2 is slowly pulled up to the ground surface side while performing this rotary jetting, a solid body of a two-liquid mixture column can be constructed in the ground.

回転噴射装置１０を用いて薬液による円柱の固結体を構築した後、Ａ液及びＢ液の供給を停止する。そして、回転噴射装置１０を地表に引き上げる。なお、引き続き、回転噴射装置１０を使用しない場合、回転噴射装置１０を分解し、内部を水洗浄することが、構成部材を互いに固結させない点で好ましい。分解は、ロッド本体部２と先端回転体１との嵌合を外すことで行なう。すなわち、螺子１８を外し、端部嵌合部１９を構成する２つの部材を互いに分離する。これにより、ロッド本体部２から先端回転体１が分離し易くなる。ロッド本体部２から先端回転体１を分離した後、ロッド本体部２の内部、特にＡ液噴射口８１ａ、８１ｂ及びＢ液噴射口６を水洗浄する。また、先端回転体１の内部を水洗浄する。２液混合物は、所定時間後にゲル化するため、２液混合物が滞留する部分は十分な水洗浄を行うことが好ましい。 After constructing the cylindrical solid body by the chemical solution using the rotary injection device 10, the supply of the liquid A and the liquid B is stopped. And the rotary injection apparatus 10 is pulled up to the ground surface. If the rotary injection device 10 is not used subsequently, it is preferable that the rotary injection device 10 is disassembled and the inside is washed with water from the viewpoint of preventing the structural members from solidifying each other. The disassembly is performed by removing the fitting between the rod body 2 and the tip rotating body 1. That is, the screw 18 is removed, and the two members constituting the end fitting portion 19 are separated from each other. As a result, the tip rotating body 1 can be easily separated from the rod body 2. After separating the distal end rotary body 1 from the rod main body 2, the inside of the rod main body 2, particularly the A liquid injection ports 81 a and 81 b and the B liquid injection port 6 are washed with water. Further, the inside of the tip rotating body 1 is washed with water. Since the two-liquid mixture gels after a predetermined time, it is preferable to sufficiently wash the portion where the two-liquid mixture stays.

本発明の回転噴射装置１０は、上記実施の形態例に限定されず、種々の変形例を採ることができる。例えば、第２水平回転体４は、図２、３及び図６のものに限定されず、図１２に示すものも使用できる。すなわち、第２水平回転体４ａは、Ｂ液である縦噴射流を受けて第２水平回転体４ａを回転させる羽根４１と、羽根４１を両側から支持する一対の鍔部４２、４３ａとからなり、一対の鍔部４２、４３ａの中、Ｂ液噴射口６側の鍔部４３ａは、反Ｂ液噴射口側の鍔部４２より小径であり、且つ鍔部４３ａの下面から下方に延びる環状の脚部４３１を形成してなり、環状の脚部４３１の外側の鍔部下面４３３が、Ｂ液噴射口６の一部を塞ぐように設置されるものである。なお、環状の脚部４３１は、Ｂ液短管６１の内側に接するかまたは近傍とすることが、第２水平回転体４ａの回転位置が決まる点で好ましい。 The rotary injection device 10 of the present invention is not limited to the above embodiment, and various modifications can be adopted. For example, the second horizontal rotator 4 is not limited to that shown in FIGS. 2, 3 and 6, and the one shown in FIG. 12 can also be used. That is, the second horizontal rotator 4a includes a blade 41 that rotates the second horizontal rotator 4a in response to the vertical jet flow that is liquid B, and a pair of flange portions 42 and 43a that support the blade 41 from both sides. Of the pair of flange portions 42 and 43a, the flange portion 43a on the B liquid injection port 6 side has a smaller diameter than the flange portion 42 on the anti-B liquid injection port side and extends downward from the lower surface of the flange portion 43a. A leg portion 431 is formed, and a flange lower surface 433 outside the annular leg portion 431 is installed so as to block a part of the B liquid ejection port 6. In addition, it is preferable that the annular leg portion 431 is in contact with or in the vicinity of the inner side of the B liquid short tube 61 in that the rotational position of the second horizontal rotator 4a is determined.

第２水平回転体４ａによれば、液噴射口６から噴射されたＢ液圧流の大部分が、羽根４１に直接当たる。また、Ｂ液圧流の一部が反先端側の鍔部４３ａを先端側へ押圧する。このため、第２水平回転体４ａを含めた先端回転体１が先端側へ押され、第２水平回転体４ａの脚部４３１及び中心軸１２が隔壁５から少し離れることになる。従って、先端回転体１の回転抵抗を減らすことができ、円滑な回転を実現できる。 According to the second horizontal rotator 4 a, most of the B hydraulic pressure jetted from the liquid jet port 6 directly hits the blades 41. Further, a part of the B hydraulic pressure presses the flange 43a on the opposite tip side toward the tip side. For this reason, the front end rotating body 1 including the second horizontal rotating body 4 a is pushed toward the front end side, and the leg portion 431 and the central shaft 12 of the second horizontal rotating body 4 a are slightly separated from the partition wall 5. Therefore, the rotational resistance of the tip rotating body 1 can be reduced, and smooth rotation can be realized.

また、Ｂ液噴射口に接続するＢ液供給系としては、上記の水車構造体７を含む供給系に限定されず、例えば図１３に示すように、水車構造体７を含む供給系に代えて、Ｂ液噴射口６ａを隔壁５に多数形成し、この多数のＢ液噴射口６ａを含み、Ｂ液供給配管と接続するＢ液貯留槽６１ａを設けることもできる。多数のＢ液噴射口６ａは、羽根４１に噴射流が当たる位置に形成される。また、Ｂ液噴射口６ａは、水車構造体７を含む供給系とは異なり、連続的な縦噴射となる。多数のＢ液噴射口６ａからの連続噴射の場合、中心軸１２を挟んだ一方の噴射による回転力が他方の噴射による回転力を若干、阻害することも懸念されるが、第２水平回転体４ａを十分に回転させることができる。 Further, the B liquid supply system connected to the B liquid injection port is not limited to the supply system including the water turbine structure 7 described above. For example, as shown in FIG. 13, instead of the supply system including the water turbine structure 7. A large number of B liquid injection ports 6a can be formed in the partition wall 5, and a B liquid storage tank 61a that includes the many B liquid injection ports 6a and is connected to the B liquid supply pipe can also be provided. A large number of the B liquid injection ports 6 a are formed at positions where the injection flow strikes the blades 41. Further, unlike the supply system including the water turbine structure 7, the B liquid injection port 6 a is continuous vertical injection. In the case of continuous injection from a large number of B liquid injection ports 6a, there is a concern that the rotational force due to one injection across the central shaft 12 may slightly inhibit the rotational force due to the other injection. 4a can be sufficiently rotated.

本発明において、回転噴射装置１０は地上の大きな装置は不要であり、作業者の手で操作することができ、建物が密集した建物周りの狭いスペースでも施工が可能である。このため、既設建物の地盤を補強する施工にも使用できる。また、地中に円柱状の固結体を造成できるため、自立性に乏しい軟弱な地盤に対しても、目的の改良強度や改良範囲を得ることができる。 In the present invention, the rotary injection device 10 does not require a large device on the ground, can be operated by an operator's hand, and can be constructed even in a narrow space around the building where the buildings are densely packed. For this reason, it can also be used for construction to reinforce the ground of existing buildings. In addition, since a cylindrical solid body can be formed in the ground, the desired improved strength and improved range can be obtained even for soft ground with poor self-supporting properties.

１円錐状の先端回転体
２ロッド本体部
３第１水平回転体
４第２水平回転体
５隔壁
６、６ａＢ液噴射口
７水車構造体
８Ａ液供給管
９Ｂ液供給管
１０回転噴射装置
１１斜め噴射孔
１２中心軸
１９端部嵌合部 1 Conical tip rotating body 2 Rod body
DESCRIPTION OF SYMBOLS 3 1st horizontal rotator 4 2nd horizontal rotator 5 Bulkhead 6, 6a B liquid injection port 7 Water wheel structure 8 A liquid supply pipe 9 B liquid supply pipe 10 Rotating injection apparatus 11 Oblique injection hole 12 Center axis 19 End fitting Joint

Claims

混合２液が噴射される斜め噴射孔を有する先端部と、該先端部から反先端側に延びる中心軸に固定されるＡ液の横噴射流を羽根に受けて回転する第１水平回転体と、Ｂ液の縦噴射流を羽根に受けて回転する該第１水平回転体の反先端側に隣接して形成される第２水平回転体と、反先端側の端部に形成される端部嵌合部とを有する円錐状の先端回転体と、
ロッド本体部の側面で該端部嵌合部と回転自在に嵌合する側面嵌合部と、該先端回転体の内室と区画する隔壁と、該隔壁に形成される該第２水平回転体の羽根にＢ液を噴射するＢ液噴射口と、を有するロッド本体部と、
該第１水平回転体の羽根に側面からＡ液を噴射するＡ液噴射口を有するＡ液供給系と、
該Ｂ液噴射口に接続するＢ液供給系と、
を備え、Ａ液とＢ液の２液の供給により、該ロッド本体部に対して該先端回転体が回転し、混合液が噴射孔から地盤中に噴射されることを特徴とする混合２液回転噴射装置。 A front end portion having an oblique injection hole through which the mixed two liquids are injected, and a first horizontal rotating body that rotates by receiving a lateral injection flow of the liquid A fixed to a central axis extending from the front end portion to the opposite end side by the blade. The second horizontal rotator formed adjacent to the anti-tip side of the first horizontal rotator rotating by receiving the vertical jet flow of liquid B on the blades, and the end formed at the end on the anti-tip side A conical tip rotating body having a fitting portion;
Side fitting portions that are rotatably fitted to the end fitting portions on the side surfaces of the rod main body portion, a partition partitioning the inner chamber of the tip rotating body, and the second horizontal rotating body formed on the partition A rod body having a B liquid injection port for injecting B liquid to the blades of
A liquid supply system having an A liquid injection port for injecting A liquid from the side surface to the blades of the first horizontal rotating body;
A B liquid supply system connected to the B liquid injection port;
The mixed liquid is characterized in that when the two liquids of liquid A and liquid B are supplied, the tip rotating body rotates with respect to the rod body, and the liquid mixture is injected into the ground from the injection hole. Rotating spray device.

Ｂ液の圧流を水車羽根に受けて回転する水車軸であって左右両端の中の少なくとも一方の端が開口すると共に、横外管に回転自在で密に嵌合し、周壁面には回転方向及び軸方向に対して共に位相差がある第１貫通孔と第２貫通孔を有する横内管と、該水車羽根と該横内管を囲むものであり、左右両端の中の少なくとも一方の端が開口すると共に、先端側の周壁であって且つ横内管の第１貫通孔と第２貫通孔に対応する位置に第１噴射口と第２噴射口を有する横外管と、を有する水車構造体を更に備え、
該Ｂ液噴射口は、該ロッド本体部の隔壁の、該第１噴射口と該第２噴射口に対応する位置に形成されることを特徴とする請求項１記載の混合２液回転噴射装置。 A turbine shaft that rotates by receiving the pressure flow of the B liquid on the turbine blades, and at least one of the left and right ends is open, and it is rotatably and tightly fitted to the lateral outer tube. And a horizontal inner pipe having a first through hole and a second through hole both having a phase difference with respect to the axial direction, and surrounding the water turbine blade and the horizontal inner pipe, and at least one of the left and right ends is open. In addition, a water turbine structure having a peripheral outer wall having a first injection port and a second injection port at positions corresponding to the first through hole and the second through hole of the horizontal inner tube on the distal end side peripheral wall. In addition,
2. The mixed two-liquid rotary injection device according to claim 1, wherein the B liquid injection port is formed at a position corresponding to the first injection port and the second injection port of the partition wall of the rod main body. .

該第１貫通孔と第２貫通孔は、該横内管の回転により、第１貫通孔と第１噴射口が連通する間、第２貫通孔と第２噴射口は連通せず、第２貫通孔と第２噴射口が連通する間、第１貫通孔と第１噴射口は連通せず、Ｂ液は第１貫通孔と第２貫通孔から交互に噴射されることを特徴とする請求項２記載の混合２液回転噴射装置。 The first through hole and the second through hole do not communicate with each other while the first through hole and the first injection port communicate with each other by the rotation of the horizontal inner tube. The first through hole and the first injection port do not communicate with each other while the hole and the second injection port communicate with each other, and the B liquid is alternately injected from the first through hole and the second through hole. 2. The mixed two-liquid rotary injection device according to 2.

該第１貫通孔と第２貫通孔は、それぞれ、回転方向に向けて漸次孔幅が拡大する三角形状孔であって、該第１貫通孔又は第２貫通孔からの噴射は、回転に連れて噴射圧が漸次低下するものであることを特徴とする請求項３記載の混合２液回転噴射装置。 Each of the first through hole and the second through hole is a triangular hole whose width gradually increases in the rotation direction, and the injection from the first through hole or the second through hole is accompanied by rotation. 4. The mixed two-liquid rotary injection device according to claim 3, wherein the injection pressure gradually decreases.

該側面嵌合部は、ロッド本体部の周壁面から外側に突出する環状水平部と、該環状水平部の外端から下方に延びる環状垂壁とからなることを特徴とする請求項１〜４のいずれか１項に記載の混合２液回転噴射装置。 The said side fitting part consists of the cyclic | annular horizontal part which protrudes outside from the surrounding wall surface of a rod main-body part, and the cyclic | annular vertical wall extended below from the outer end of this cyclic | annular horizontal part. The mixed two-liquid rotary injection apparatus according to any one of the above.

該端部嵌合部は、先端回転体の円錐状を形成する外壁に対して、螺子止めされる該外壁とは別部材の環状の水平板部を有する環状体であって、該環状の水平板部の外端部には、上方に起立する三角形断面の突起部を形成し、該突起部より少し離れた内側には上方に延びる環状立壁を形成したことを特徴とする請求項１〜５のいずれか１項に記載の混合２液回転噴射装置。 The end fitting portion is an annular body having an annular horizontal plate portion, which is a member separate from the outer wall to be screwed, with respect to the outer wall forming the conical shape of the tip rotating body. 6. A protruding portion having a triangular cross-section standing upward is formed at an outer end portion of the plate portion, and an annular standing wall extending upward is formed inside a little away from the protruding portion. The mixed two-liquid rotary injection apparatus according to any one of the above.

該第２水平回転体は、Ｂ液である縦噴射流を受けて該第２水平回転体を回転させる羽根と、該羽根を両側から支持する一対の鍔部とからなり、一対の鍔部の中、Ｂ液噴射口側の鍔部は、反Ｂ液噴射口側の鍔部より小径であり、且つ鍔部の下面から下方に延びる脚部を形成してなり、該脚部の外側の鍔部下面が、Ｂ液噴射口の一部を塞ぐように設置されることを特徴とする請求項１〜６のいずれか１項に記載の混合２液回転噴射装置。 The second horizontal rotating body includes a blade that receives the vertical jet flow that is the liquid B and rotates the second horizontal rotating body, and a pair of flanges that support the blade from both sides. In the middle, the collar part on the B liquid injection port side has a smaller diameter than the collar part on the side opposite to the B liquid injection port and forms a leg part extending downward from the lower surface of the collar part. The mixed two-liquid rotary injection device according to any one of claims 1 to 6, wherein the lower surface of the part is installed so as to block a part of the B liquid injection port.