JPH05255928A - Stirring/mixing/processing device - Google Patents
Stirring/mixing/processing deviceInfo
- Publication number
- JPH05255928A JPH05255928A JP8748592A JP8748592A JPH05255928A JP H05255928 A JPH05255928 A JP H05255928A JP 8748592 A JP8748592 A JP 8748592A JP 8748592 A JP8748592 A JP 8748592A JP H05255928 A JPH05255928 A JP H05255928A
- Authority
- JP
- Japan
- Prior art keywords
- stirring
- blade
- auxiliary
- vane
- hydraulic cylinder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、軟弱地盤等の地耐力を
増強させるために、地盤中にモルタル，セメントミル
ク，粉粒状の改良材等を吐出・注入しながら攪拌混合す
るのに使用される攪拌混合処理装置に関するものであ
る。INDUSTRIAL APPLICABILITY The present invention is used for stirring and mixing while discharging and injecting mortar, cement milk, a powdery and granular improving material and the like into the ground in order to enhance the ground bearing capacity of soft ground and the like. The present invention relates to a stirring and mixing processing device.
【０００２】[0002]
【従来の技術】この種の装置は、従来より数多く知られ
ており、一般には駆動モータにより回転される回転軸
と、この回転軸の下端側に一体回転可能に取り付けられ
た掘削翼と、この掘削翼の上方に位置して回転軸と一体
回転可能に取り付けられた攪拌翼とを備えるとともに、
改良材を送り込むための供給通路を回転軸に沿って設け
た構成になっている。そして、改良材は、攪拌翼の付け
根部分等に設けられている吐出口まで供給通路を介して
搬送され、さらに攪拌翼の回転を伴いながら周囲の土壌
内に吐出・注入されて土壌と混合攪拌され、処理地盤を
得るようになっている。2. Description of the Related Art A large number of devices of this type have been known so far, and generally, a rotary shaft rotated by a drive motor, an excavation blade integrally rotatably mounted on the lower end side of the rotary shaft, With a stirring blade that is located above the excavation blade and is attached so as to be rotatable integrally with the rotating shaft,
A supply passage for feeding the improvement material is provided along the rotation axis. Then, the improving material is conveyed through the supply passage to the discharge port provided at the root portion of the stirring blade, and is further discharged / injected into the surrounding soil while the stirring blade is rotated and mixed and stirred with the soil. The treated ground is obtained.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、従来の
装置では、攪拌翼を回転軸と共に単に回転させているだ
けなので、攪拌時に攪拌翼が描く回転軌跡は、上側から
平面的に見た場合、単純な円形で表される。したがっ
て、例えば図４に示すように、特定の広い領域１０１に
わたって地盤改良を必要とするようなときにあって、攪
拌翼の回転直径分だけ順次ずらして攪拌作業を進めたよ
うな場合、同図中の白抜き部分で示される円形領域１０
２は攪拌混合処理を行うことができる。しかし、斜線で
示す残りの領域１０３は処理できないことになり、領域
１０１を１００％くまなく改良することができない。そ
こで、領域１０３内を１００％改良する場合には、残り
の各領域１０３を別途処理しなければならない。これに
は改良材の無駄や時間的なロスが発生し、効率的な改良
作業等ができないと言う問題点があった。However, in the conventional apparatus, since the stirring blade is simply rotated together with the rotary shaft, the rotation locus drawn by the stirring blade during stirring is simple when viewed from above in a plan view. It is represented by a perfect circle. Therefore, for example, as shown in FIG. 4, when it is necessary to improve the ground over a specific wide area 101, and the stirring work is advanced by sequentially shifting by the rotation diameter of the stirring blade, A circular area 10 shown by a white portion inside
For No. 2, stirring and mixing treatment can be performed. However, the remaining shaded area 103 cannot be processed, and the area 101 cannot be improved 100%. Therefore, when the area 103 is to be improved 100%, the remaining areas 103 must be separately processed. This causes a problem that the improvement material is wasted and time is lost, and efficient improvement work cannot be performed.
【０００４】本発明は、上記問題点に鑑みてなされたも
のであり、その目的は特定領域内の地盤土壌と改良材を
効率良く攪拌混合処理して改良することができるように
した攪拌混合処理装置を提供することにある。The present invention has been made in view of the above problems, and an object thereof is a stirring and mixing treatment which can be improved by efficiently stirring and mixing the ground soil and the improving material in a specific area. To provide a device.
【０００５】[0005]
【課題を解決するための手段】上記目的を達成するため
本発明は、回転軸に取り付けた攪拌翼を回転させ、地盤
土壌と改良材とを混合攪拌する攪拌混合処理装置におい
て、前記回転軸の周囲に固定して取り付けられた前記攪
拌翼に、この攪拌翼の先端より進退出可能な補助翼を設
けるとともに、前記補助翼の突出量を調整自在にして、
前記補助翼の進退出を制御する駆動手段を設けたもので
ある。In order to achieve the above object, the present invention provides a stirring and mixing treatment apparatus for rotating a stirring blade attached to a rotary shaft to mix and stir ground soil and an improving material. The stirring blade fixedly attached to the periphery is provided with an auxiliary blade that can advance and retreat from the tip of this stirring blade, and the amount of protrusion of the auxiliary blade can be adjusted,
A drive means for controlling the advance / retreat of the auxiliary blade is provided.
【０００６】[0006]
【作用】この構成によれば、回転軸と共に攪拌翼が回転
されている途中で、駆動手段の制御によって補助翼を突
出および退避させると、この補助翼の進退出のタイミン
グにより、攪拌翼が描く回転軌跡を平面略矩形状等、非
円形状に形成することができる。したがって、例えば平
面略矩形状の領域内の地盤土壌を改良するような場合で
も、その領域内を矩形領域に区切りながら、約１００％
もれなく攪拌して改良することも可能になる。According to this structure, when the agitating blade is projected and retracted by the control of the driving means while the agitating blade is being rotated together with the rotating shaft, the agitating blade draws at the timing of the advancing / retreating of the aiding blade. The rotation locus can be formed in a non-circular shape such as a substantially rectangular shape in a plane. Therefore, for example, even in the case of improving the ground soil in a substantially rectangular area in a plane, while dividing the area into rectangular areas, about 100%
It becomes possible to stir and improve without leakage.
【０００７】[0007]
【実施例】以下、本発明の実施例について図面を用いて
詳細に説明する。図１は本発明の一実施例に係る攪拌混
合処理装置の一部を破断して示す要部概略側面図、図２
は図１のＡ−Ａ線に沿って攪拌状態で示す概略断面図で
ある。Embodiments of the present invention will be described in detail below with reference to the drawings. FIG. 1 is a schematic side view of a main part of a stirring and mixing treatment apparatus according to an embodiment of the present invention with a part thereof broken away.
FIG. 2 is a schematic sectional view taken along line AA of FIG. 1 in a stirring state.
【０００８】図１および図２において、この装置では、
図示せぬ駆動モータにより回転される回転軸１を有し、
この回転軸１に左右一対の攪拌翼２を設けた構成となっ
ている。また、図示はしないが、回転軸１には、攪拌混
合処理時に、地盤土壌内に注入するモルタルや、セメン
トミルク，粉粒状の改良材等を通し、かつ吐出・注入す
るための流体管が配設されている。1 and 2, in this device,
Having a rotary shaft 1 rotated by a drive motor (not shown),
The rotary shaft 1 is provided with a pair of left and right stirring blades 2. Although not shown, the rotary shaft 1 is provided with a fluid pipe for discharging and injecting mortar, cement milk, a powdery and granular improving material to be injected into the ground soil during the stirring and mixing process. It is set up.
【０００９】さらに詳述すると、各攪拌翼２は、内部が
空洞の筒状に形成されているとともに、一端が回転軸１
内に開口し、他端が外部に開口された状態になってい
る。加えて、各攪拌翼２内には、補助翼３と油圧シリン
ダー４とが配設されている。More specifically, each stirring blade 2 is formed in a hollow cylindrical shape, and one end of the rotating shaft 1 is formed.
It is opened inside and the other end is opened outside. In addition, an auxiliary blade 3 and a hydraulic cylinder 4 are arranged in each stirring blade 2.
【００１０】上記補助翼３は、攪拌翼２の他端より進退
出可能に配設されており、また駆動手段としての油圧シ
リンダー４のピストン４ａに固定して取り付けられてい
る。そして、油圧シリンダー４の駆動で、図１中の矢印
Ｂ−Ｃ方向に進退出制御される状態になっている。The auxiliary blade 3 is arranged so as to be able to move forward and backward from the other end of the stirring blade 2, and is fixedly attached to a piston 4a of a hydraulic cylinder 4 as a driving means. Then, the hydraulic cylinder 4 is driven to be in a state of being controlled to move back and forth in the direction of arrows B-C in FIG.
【００１１】一方、各油圧シリンダー４は、攪拌翼２内
に各々固定して取り付けられ、さらに油圧パイプ５を介
して油圧制御器６に接続されている。この油圧制御器６
は、図示せぬマイクロコンピュータに入力されるデータ
に基づいて油圧シリンダー４を駆動してピストン４ａの
突出量を調整し、この調整によって攪拌翼２に対する補
助翼３の突出量を調整できるようになっている。On the other hand, each hydraulic cylinder 4 is fixedly mounted inside the stirring blade 2, and further connected to a hydraulic controller 6 via a hydraulic pipe 5. This hydraulic controller 6
Drives the hydraulic cylinder 4 based on data input to a microcomputer (not shown) to adjust the amount of protrusion of the piston 4a, and by this adjustment, the amount of protrusion of the auxiliary blade 3 with respect to the stirring blade 2 can be adjusted. ing.
【００１２】なお、実施工で採用した油圧制御器６の制
御例を概説する。設定条件としては、適用形状を選択
し油圧シリンダー４におけるピストン４ａの伸び量に対
する形状関数を決定する。但し、適用形状には限定され
ない。形状関数（アナログ値）をＡ／Ｄ変換する。
形状関数のデジタル信号（ＯＮ／ＯＦＦ信号）をサー
ボバルブのＯＮ／ＯＦＦ信号に変換する。計数制御用
サーボバルブの分解能を必要シリンダーストロークの分
解能にセットする。このシリンダーストロークの分解能
とは一回のピストン４ａの移動量を規定する最小の油流
量単位△Ｑとする。シリンダー回路に計数制御用サー
ボバルブを組み込む。A control example of the hydraulic controller 6 adopted in the actual work will be outlined. As a setting condition, an applied shape is selected and a shape function with respect to the extension amount of the piston 4a in the hydraulic cylinder 4 is determined. However, the applied shape is not limited. The shape function (analog value) is A / D converted.
The digital signal (ON / OFF signal) of the shape function is converted into the ON / OFF signal of the servo valve. Set the resolution of the counting control servo valve to the required cylinder stroke resolution. The resolution of the cylinder stroke is the minimum oil flow rate unit ΔQ that defines the amount of movement of the piston 4a at one time. A servo valve for counting control is installed in the cylinder circuit.
【００１３】ここで、前記形状関数は、例えば、図３の
ように杭形状が断面正方形で、内接円の半径をｒ、油圧
シリンダー４による補助翼３の最大伸び量Ｌとする。こ
の最大伸び量Ｌは、攪拌翼２の回転角ωｔの関数で次式
のように表される。 Ｌ＝ｆ（ωｔ） ＝ｒ×ｔａｎ ωｔ−ｒ ＝ｒ（ｔａｎ ωｔ−１） また、ｔａｎ π／４ ＝√２ であるから、シリンダ
ーの伸び量の範囲は以下のようになる。 ０ ≦ １ ≦ ０．４１４×ｒHere, in the shape function, for example, the pile shape has a square cross section as shown in FIG. 3, the radius of the inscribed circle is r, and the maximum expansion amount L of the auxiliary blade 3 by the hydraulic cylinder 4 is L. The maximum elongation L is a function of the rotation angle ωt of the stirring blade 2 and is represented by the following equation. L = f (ωt) = r × tan ωt−r = r (tan ωt−1) Since tan π / 4 = √2, the range of cylinder elongation is as follows. 0 ≤ 1 ≤ 0.414 xr
【００１４】演算では、先ず攪拌翼２の回転角ωｔを所
定の分解能に応じＡ／Ｄ変換する。前記形状例の場合
は、Ｌ＝ｒ（ｔａｎ ωｔ−１）について回転角ωｔの
最小ビット △ωｔ1 に対応する △Ｌ1 を求める。
ここで、△Ｌnは最小油流量単位△Ｑのｎ倍としてカウ
ントする。すなわち、△Ｌk＝ｎ×△Ｑ1 そして、攪拌翼２の回転に応じて △Ｌ2，△Ｌ3，△Ｌ4・・・・・・・△Ｌn 信号が計数
制御用サーボバルブに送られる。In the calculation, first, the rotation angle ωt of the stirring blade 2 is A / D converted according to a predetermined resolution. Wherein in the case of shape example, obtains the L = r (tan ωt-1 ) corresponding to the minimum bit △ .omega.t 1 of the rotational angle .omega.t for △ L 1.
Here, ΔL n is counted as n times the minimum oil flow rate unit ΔQ. That is, ΔL k = n × ΔQ 1 and the ΔL 2 , ΔL 3 , ΔL 4, ... ΔL n signals are transmitted to the counting control servo valve in accordance with the rotation of the stirring blade 2. Sent.
【００１５】そして、このサーボバルブからは演算結果
の信号に応じたｎ×△Ｑの油流量がシリンダー回路に流
れる。前記形状関数の変化に従ったシリンダーストロー
クが得られ、ピストン４ａの突出量に応じた所定の杭形
状に仕上がるのである。From this servo valve, an oil flow amount of n × ΔQ corresponding to the signal of the calculation result flows to the cylinder circuit. The cylinder stroke is obtained according to the change of the shape function, and the shape of the pile is finished according to the protrusion amount of the piston 4a.
【００１６】次に、このように構成された攪拌混合処理
装置の動作を説明する。まず、回転軸１は、図示せぬ駆
動モータにより回転され、これと一体に攪拌翼２も地盤
土壌を切りながら回転を始める。このとき、補助翼３
が、攪拌翼２に対して最も退避された図１および図２に
実線で示す状態にある場合は、攪拌翼２および補助翼３
は、図２中に符号１０で示す平面円形の回転軌跡で描か
れる領域内を攪拌しながら回転する。Next, the operation of the agitating and mixing processing apparatus thus constructed will be described. First, the rotating shaft 1 is rotated by a drive motor (not shown), and the stirring blade 2 also starts rotating while cutting the ground soil integrally with this. At this time, the auxiliary wings 3
Is in the state of being most retracted with respect to the stirring blade 2, as shown by the solid line in FIGS. 1 and 2, the stirring blade 2 and the auxiliary blade 3
Rotates while stirring in a region drawn by a plane circular rotation locus shown by reference numeral 10 in FIG.
【００１７】ここで、図２中に符号１１で示す平面矩形
状の領域内を攪拌処理する必要がある場合は、符号Ｄ点
から符号Ｅ点側に向かって行くに従ってピストン４ａが
序々突出され、さらに符号Ｅ点から符号Ｄ点に向かって
進むに従ってピストン４ａが序々に退避されるようにし
て、油圧シリンダー４を油圧制御器６を介して制御する
と、このピストン４ａの進退出に連動して補助翼３も攪
拌翼２より突出され、これによって攪拌翼２および補助
翼３は図２中に符号１１で示す平面矩形状の回転軌跡で
描かれる領域内を攪拌処理することができる。Here, when it is necessary to stir the inside of the area of the rectangular plane shape indicated by reference numeral 11 in FIG. 2, the piston 4a gradually protrudes from the point D toward the point E, Further, when the hydraulic cylinder 4 is controlled via the hydraulic controller 6 so that the piston 4a is gradually retracted as it goes from the point E to the point D, the assist is interlocked with the advance / retreat of the piston 4a. The blades 3 are also projected from the stirring blades 2, so that the stirring blades 2 and the auxiliary blades 3 can perform stirring processing within a region drawn by a planar rectangular rotation locus shown by reference numeral 11 in FIG.
【００１８】したがって、この実施例による攪拌混合処
理装置を使用した場合では、例えば図４に示したような
矩形状の領域１０１を改良するような場合、従来装置に
おいては一度に改良処理できない領域１０３が存在して
いたのに対して、図３に示すように領域１０１内を矩形
領域に区切りながら一度に改良処理することができるこ
とになる。Therefore, when the stirring and mixing treatment apparatus according to this embodiment is used, for example, when the rectangular area 101 as shown in FIG. However, as shown in FIG. 3, it is possible to perform the improvement processing at once by dividing the area 101 into rectangular areas.
【００１９】なお、上記実施例では、補助翼３を進退出
させる駆動手段として油圧シリンダー４を用いた構造を
開示したが、駆動源としてモータ等を使用しても差し支
えないものである。また、改良処理領域の形状は矩形状
の場合について説明したが、この形状はマイクロコンピ
ュータ等に入力されたデータに基づいて、補助翼３の突
出量を調整すれば任意に形成できるものである。例え
ば、断面形状として、三角形や六角形、さらには楕円形
なども設計可能であり、施工領域条件などを考慮して最
適な形状を採用して合理的に施工できる。In the above embodiment, the structure in which the hydraulic cylinder 4 is used as the drive means for moving the auxiliary wing 3 forward and backward is disclosed, but a motor or the like may be used as the drive source. Further, the case where the shape of the improvement processing region is rectangular has been described, but this shape can be arbitrarily formed by adjusting the protrusion amount of the auxiliary wing 3 based on the data input to the microcomputer or the like. For example, a triangular shape, a hexagonal shape, or an elliptical shape can be designed as the cross-sectional shape, and an optimum shape can be adopted in consideration of construction area conditions and rational construction can be performed.
【００２０】[0020]
【発明の効果】以上説明したとおり、本発明に係る攪拌
混合処理装置によれば、回転軸と共に攪拌翼が回転され
ている途中で、油圧シリンダー等の駆動手段の制御によ
って補助翼を突出および退避させると、攪拌翼が描く回
転軌跡を平面略矩形状等、非円形状に形成することがで
きる。したがって、例えば平面略矩形状の領域内の地盤
土壌を改良するような場合でも、その領域内を矩形領域
に区切りながら、約１００％もれなく攪拌して改良する
ことも可能になる。As described above, according to the stirring and mixing treatment apparatus of the present invention, the auxiliary blade is projected and retracted by the control of the driving means such as the hydraulic cylinder while the stirring blade is being rotated together with the rotating shaft. By doing so, the rotation locus drawn by the stirring blade can be formed in a non-circular shape such as a substantially rectangular shape in a plane. Therefore, for example, even in the case of improving the ground soil in a substantially rectangular area in a plane, it is possible to stir and improve the area by dividing the area into rectangular areas without fail.
【図１】本発明の一実施例に係る攪拌混合処理装置の一
部を破断して示す要部概略側面図である。FIG. 1 is a schematic side view of a main part of a stirring and mixing treatment apparatus according to an embodiment of the present invention with a part thereof broken away.
【図２】図１のＡ−Ａ線に沿って攪拌状態で示す概略断
面図である。FIG. 2 is a schematic sectional view taken along line AA of FIG. 1 and showing a stirring state.
【図３】本発明に係る攪拌混合処理装置を適用した場合
における改良領域を説明するための図である。FIG. 3 is a diagram for explaining an improved region when the stirring and mixing treatment apparatus according to the present invention is applied.
【図４】従来の攪拌混合処理装置を使用した場合におけ
る改良領域を説明するための図である。FIG. 4 is a diagram for explaining an improved region when a conventional stirring and mixing treatment device is used.
１ 回転軸 ２ 攪拌翼 ３ 補助翼 ４ 油圧シリンダー（駆動手段） ４ａ ピストン ５ 油圧パイプ ６ 油圧制御器 DESCRIPTION OF SYMBOLS 1 rotary shaft 2 stirring blade 3 auxiliary blade 4 hydraulic cylinder (driving means) 4a piston 5 hydraulic pipe 6 hydraulic controller
Claims (1)
地盤土壌と改良材とを混合攪拌する攪拌混合処理装置に
おいて、 前記回転軸の周囲に固定して取り付けられた前記攪拌翼
に、この攪拌翼の先端より進退出可能な補助翼を設ける
とともに、 前記補助翼の突出量を調整自在にして、前記補助翼の進
退出を制御する駆動手段を設けたことを特徴とする攪拌
混合処理装置。1. Rotating a stirring blade attached to a rotary shaft,
In a stirring and mixing treatment apparatus for mixing and stirring the ground soil and the improving material, the stirring blade fixedly attached to the periphery of the rotating shaft is provided with an auxiliary blade that can be advanced and retracted from the tip of the stirring blade, An agitating / mixing processing apparatus, characterized in that a drive means for controlling the advancing / retreating of the auxiliary blade is provided by making the amount of protrusion of the auxiliary blade adjustable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4087485A JP3055835B2 (en) | 1992-03-12 | 1992-03-12 | Stirring mixing equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4087485A JP3055835B2 (en) | 1992-03-12 | 1992-03-12 | Stirring mixing equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05255928A true JPH05255928A (en) | 1993-10-05 |
| JP3055835B2 JP3055835B2 (en) | 2000-06-26 |
Family
ID=13916255
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4087485A Expired - Fee Related JP3055835B2 (en) | 1992-03-12 | 1992-03-12 | Stirring mixing equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3055835B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012107463A (en) * | 2010-11-19 | 2012-06-07 | Chemical Grouting Co Ltd | Ground improvement method |
-
1992
- 1992-03-12 JP JP4087485A patent/JP3055835B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012107463A (en) * | 2010-11-19 | 2012-06-07 | Chemical Grouting Co Ltd | Ground improvement method |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3055835B2 (en) | 2000-06-26 |
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