JPH0710032U - Ground improvement device - Google Patents
Ground improvement deviceInfo
- Publication number
- JPH0710032U JPH0710032U JP3878293U JP3878293U JPH0710032U JP H0710032 U JPH0710032 U JP H0710032U JP 3878293 U JP3878293 U JP 3878293U JP 3878293 U JP3878293 U JP 3878293U JP H0710032 U JPH0710032 U JP H0710032U
- Authority
- JP
- Japan
- Prior art keywords
- rotation prevention
- prevention plate
- bit
- rotation
- excavated soil
- 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
(57)【要約】
【目的】 掘削孔径より僅かに小さく設定した共回り防
止板の共回りを防止するように構成して、攪拌混合を確
実に行う。また掘削孔の壁面の崩壊や硬い地盤、礫等に
よる共回り防止板の嵌入不能というトラブルの発生を防
止する。
【構成】 共回り防止板２２をビット翼１２と攪拌翼１
４の間に回動自在に支持し、共回り防止板２２の長さを
ビット翼１２の掘削径より僅かに小さく設定した。ま
た、共回り防止板２２の外端部に傾斜状の折曲部２２Ａ
を形成して折曲部２２Ａと掘削孔壁２４Ａとで楔状空間
３０を形成した。この楔状空間３０に共回り防止板２２
の回動方向側の掘削土が充填されて圧密されるので、圧
密された掘削土が障害になって共回り防止板２２が静止
状態に保持される。これにより、ビット翼１２と共に回
転している掘削土が共回り防止板２２で堰止めされて静
止され、掘削土の土塊が攪拌翼１４で剪断粉砕される。
(57) [Summary] [Purpose] The co-rotation prevention plate, which is set to be slightly smaller than the drill hole diameter, is configured to prevent co-rotation, and ensure stirring and mixing. Further, it is possible to prevent the occurrence of troubles such as collapse of the wall surface of the excavation hole and hard fitting of the co-rotation prevention plate due to hard ground or gravel. [Composition] Co-rotation prevention plate 22 is provided with bit blade 12 and stirring blade 1
It is supported rotatably between 4 and the length of the co-rotation prevention plate 22 is set to be slightly smaller than the excavation diameter of the bit blade 12. In addition, an inclined bent portion 22A is formed on the outer end of the co-rotation prevention plate 22.
To form a wedge-shaped space 30 by the bent portion 22A and the hole wall 24A. A co-rotation prevention plate 22 is provided in the wedge-shaped space 30.
Since the excavated soil on the rotating direction side is filled and compacted, the compacted excavated soil becomes an obstacle and the corotation preventing plate 22 is held stationary. As a result, the excavated soil rotating together with the bit blade 12 is blocked and stopped by the co-rotation prevention plate 22, and the lump of excavated soil is sheared and crushed by the stirring blade 14.
Description
【０００１】[0001]
本考案は地盤改良装置に係り、特に基礎工事等において掘削土と充填剤を混合 して地盤を改良する地盤改良装置に関する。 The present invention relates to a ground improvement device, and more particularly, to a ground improvement device that mixes excavated soil and a filler to improve the ground during foundation work and the like.
【０００２】[0002]
従来の地盤改良装置は特公昭５８−２９３７４号公報に示すように、掘削軸の 下端部に掘削用のビットを備えていて、ビットの上方の掘削軸には攪拌翼が複数 段状に取り付けられていて、ビットと攪拌翼間の掘削軸や攪拌翼と攪拌翼間の掘 削軸には共回り防止板が回動自在に支持されている。この共回り防止板はビット 径や攪拌翼径より長く設定されている。このように構成された地盤改良装置で地 盤を改良する場合、掘削軸を回転してビットで地盤に円形の孔を掘削し、同時に 掘削軸からセメントミル等の充填剤を供給して掘削する。ビットで掘削された掘 削土は充填剤と混り合いながら、粘性と付着があるのでビットや攪拌翼の動きと 一緒に共回りする。 As shown in Japanese Patent Publication No. 58-29374, a conventional ground improvement device is equipped with a bit for excavation at the lower end of an excavation shaft, and stirring blades are attached in multiple stages to the excavation shaft above the bit. On the other hand, a co-rotation preventive plate is rotatably supported on the excavation shaft between the bit and the stirring blade and the excavation shaft between the stirring blade and the stirring blade. This co-rotation prevention plate is set longer than the bit diameter and stirring blade diameter. When the soil is improved by the soil improvement device configured in this way, the excavation shaft is rotated to excavate a circular hole in the soil with a bit, and at the same time, the filler such as a cement mill is supplied from the excavation shaft to excavate. . The excavated soil excavated by the bit mixes with the filler, but since it has viscosity and adhesion, it co-rotates with the movement of the bit and the stirring blade.
【０００３】 一方、共回り防止板はビットや攪拌翼より長く形成されているので、共回り防 止板の両端部が掘削孔の外側の地盤に貫入する。従って、共回り防止板の両端部 は掘削孔の外側地盤の抵抗を受けるので、共回り防止板は回転せずに掘削孔内に 貫入する。これにより、回転翼等と共回りしている掘削土や充填剤は共回り防止 板でせき止められて共回りが静止され、静止した掘削土や充填剤は回転中のビッ トや攪拌翼で剪断粉砕されるので、掘削土や充填剤が攪拌、混合されて地盤が改 良される。On the other hand, since the co-rotation preventing plate is formed longer than the bit and the stirring blade, both ends of the co-rotation preventing plate penetrate into the ground outside the excavation hole. Therefore, both ends of the co-rotation prevention plate receive the resistance of the ground outside the drill hole, so the co-rotation prevention plate penetrates into the drill hole without rotating. As a result, the excavated soil and filler that co-rotate with the rotor blades are stopped by the anti-rotation plate and the co-rotation is stopped, and the stationary excavated soil and filler are sheared by the rotating bits and stirring blades. As it is crushed, excavated soil and filler are agitated and mixed to improve the ground.
【０００４】[0004]
しかしながら、従来の地盤改良装置は共回り防止板の回転を阻止するために、 共回り防止板の両端部を掘削孔の外側の地盤に貫入させる必要があるので、掘削 孔の壁面を崩すおそれがあり、また、礫が当接した場合障害となって共回り防止 板が地盤に貫入できなくなるという欠点がある。また、地盤改良は隣孔とラップ して掘削するため、掘削径より大きい共回り防止板では既にセメントミルで固結 している隣孔に貫入しないという欠点がある。 However, in the conventional ground improvement device, it is necessary to penetrate both ends of the co-rotation prevention plate into the ground outside the excavation hole in order to prevent the co-rotation prevention plate from rotating. However, there is a drawback in that the co-rotation prevention plate cannot penetrate into the ground as an obstacle when gravel comes into contact. In addition, since ground improvement is performed by lapping with adjacent holes, co-rotation preventive plates larger than the excavation diameter do not penetrate into adjacent holes already solidified by the cement mill.
【０００５】 本考案はこのような事情に鑑みてなされたもので、掘削孔の外側の地盤に貫入 させずに共回り防止板の回動を阻止することができる地盤改良装置を提供するこ とを目的とする。The present invention has been made in view of the above circumstances, and provides a ground improvement device that can prevent the co-rotation prevention plate from rotating without penetrating into the ground outside the excavation hole. With the goal.
【０００６】[0006]
本考案は、前記目的を達成する為に、ビット及び攪拌翼が設けられた掘削軸を 、回転しつつ掘削土と充填剤とを混合攪拌する地盤改良装置において、前記ビッ トと攪拌翼の間及び攪拌翼と攪拌翼の間の少なくとも一方の間に位置すると共に 前記掘削軸に共回り防止板を回動自在に支持し、前記共回り防止板の長さを前記 ビットの掘削径より僅かに小さく設定すると共に前記共回り防止板の外端部には 所定角度屈曲した傾斜面を形成し、該傾斜面と掘削孔壁とで形成された楔状空間 で前記共回り防止板を静止させることを特徴とする。 In order to achieve the above object, the present invention provides a ground improvement device for mixing and agitating excavated soil and a filler while rotating an excavation shaft provided with a bit and an agitating blade, and between the bit and the agitating blade. And a co-rotation prevention plate that is positioned between at least one of the stirring blades and the stirring blade and rotatably supports the co-rotation prevention plate on the excavation shaft, and the length of the co-rotation prevention plate is slightly smaller than the excavation diameter of the bit. A small angle is set and an outer end of the co-rotation preventive plate is formed with an inclined surface bent at a predetermined angle, and the co-rotation preventive plate is made to stand still in a wedge-shaped space formed by the inclined surface and the borehole wall. Characterize.
【０００７】[0007]
本考案によれば、防止手段の共回り防止板をビットと攪拌翼の間及び攪拌翼と 攪拌翼の間の少なくとも一方の間に回動自在に支持し、この共回り防止板の長さ をビットの掘削径より僅かに小さく設定した。また、共回り防止板の外端部には 所定角度屈曲した傾斜面を形成して傾斜面と掘削孔壁とで楔状空間を形成した。 従って、この楔状空間に共回り防止板の回動方向側の掘削土が充填されて圧密さ れて掘削土が流れるので、圧密された掘削土が障害になって共回り防止板が静止 状態に保持される。 According to the present invention, the co-rotation preventing plate of the prevention means is rotatably supported between the bit and the stirring blade and between at least one of the stirring blade and the stirring blade, and the length of the co-rotation preventing plate is It was set slightly smaller than the drilling diameter of the bit. Further, an inclined surface bent at a predetermined angle is formed at the outer end of the co-rotation preventing plate to form a wedge-shaped space between the inclined surface and the borehole wall. Therefore, the wedge-shaped space is filled with the excavated soil on the rotation direction side of the co-rotation preventive plate and is compacted to flow the excavated soil, so that the compacted excavated soil obstructs the co-rotation preventive plate in a stationary state. Retained.
【０００８】[0008]
以下添付図面に従って本考案に係る地盤改良装置の好ましい実施例について詳 説する。 図１は本考案に係る地盤改良装置１０の斜視図であり、同図に示すように地盤 改良装置１０はビット翼１２、攪拌翼１４及び共回り防止板２２を備えている。 ビット翼１２、１２…は掘削軸１８の下端部に段違い十字状に配置されていて、 十字状の一辺の長さ（すなわち、直線状に配置されたビット翼１２、１２の長さ ）はＤ1 に設定されている。ビット翼１２の下端部にはカッタビット１２Ａ、１ ２Ａ…が形成されている。A preferred embodiment of a ground improvement device according to the present invention will be described in detail below with reference to the accompanying drawings. FIG. 1 is a perspective view of a ground improvement device 10 according to the present invention. As shown in FIG. 1, the ground improvement device 10 includes a bit blade 12, a stirring blade 14, and a corotation preventing plate 22. The bit blades 12, 12, ... Are arranged in a stepped cross shape at the lower end of the excavation shaft 18, and the length of one side of the cross shape (that is, the length of the bit blades 12, 12 arranged in a straight line) is D. It is set to 1 . Cutter bits 12A, 12A ... Are formed at the lower end of the bit blade 12.
【０００９】 ビット翼１２の上方の掘削軸１８には攪拌翼１４が段違い十字状に配置されて いる。十字状の一辺の長さ（すなわち、直線状に配置された攪拌翼１４、１４の 長さ）は、ビット翼１２と同様にＤ1 に設定されていて、攪拌翼１４は水平面に 対して僅かに回転方向に傾斜した状態で配置されている。また、攪拌翼１４とビ ット翼１２間には共回り防止板２２が回動自在に支持されている。On the excavation shaft 18 above the bit blade 12, the stirring blades 14 are arranged in a stepped cross shape. The length of one side of the cross shape (that is, the length of the stirring blades 14, 14 arranged in a straight line) is set to D 1 like the bit blade 12, and the stirring blade 14 is slightly smaller than the horizontal plane. Are arranged in a state of being inclined in the rotation direction. A co-rotation prevention plate 22 is rotatably supported between the stirring blade 14 and the bit blade 12.
【００１０】 すなわち、共回り防止板２２が掘削軸１８に回動自在に支持されていて、共回 り防止板２２は掘削軸１８のフランジ１８Ａ、１８Ａで上下方向の移動が阻止さ れる。この場合、共回り防止板２２の長さＤ2 はビット翼１２及び攪拌翼１４の 長さＤ1 より僅かに小さく設定されている。従って、共回り防止板２２の外端部 は、ビット翼１２、１２…で掘削された掘削孔２４の壁面２４Ａの近傍に位置す る。That is, the co-rotation prevention plate 22 is rotatably supported by the excavation shaft 18, and the co-rotation prevention plate 22 is prevented from moving in the vertical direction by the flanges 18 A, 18 A of the excavation shaft 18. In this case, the length D 2 of the co-rotation preventing plate 22 is set to be slightly smaller than the length D 1 of the bit blade 12 and the stirring blade 14. Therefore, the outer end portion of the co-rotation preventing plate 22 is located near the wall surface 24A of the excavation hole 24 excavated by the bit blades 12, 12.
【００１１】 また、共回り防止板２２は板材で形成されていて、共回り防止板２２の回動方 向側の外端部には所定角度屈曲した傾斜面を有する折曲部２２Ａが形成されてい る。そして、傾斜状の折曲部２２Ａと掘削孔２４の壁面２４Ａは楔状の空間３０ （図２参照）を形成する。この場合、共回り防止板２２の外端部は、ビット翼１ ２、１２…で掘削された掘削孔２４の壁面２４Ａの近傍に位置するので、楔状の 空間３０の先端の隙間は掘削土３１が通りにくくなるようなっている。従って、 図２上で共回り防止板２２が時計回り方向に回動すると、掘削土３１が楔状の空 間３０に充填されて圧密された状態では掘削土が移動するので、圧密された掘削 土３１が障害となって共回り防止板２２の回動を阻止する。また共回り防止板２ ２は、一体ものに限らず２つ割のものをボルト等で固定して使用してもよい。Further, the co-rotation prevention plate 22 is formed of a plate material, and a bent portion 22A having an inclined surface bent at a predetermined angle is formed at an outer end portion of the co-rotation prevention plate 22 on the rotation direction side. ing. The inclined bent portion 22A and the wall surface 24A of the excavation hole 24 form a wedge-shaped space 30 (see FIG. 2). In this case, the outer end portion of the co-rotation prevention plate 22 is located near the wall surface 24A of the excavation hole 24 excavated by the bit blades 12, 12, ... Therefore, the gap at the tip of the wedge-shaped space 30 is the excavated soil 31. Is hard to pass through. Therefore, when the co-rotation prevention plate 22 rotates clockwise in FIG. 2, the excavated soil moves when the excavated soil 31 is filled in the wedge-shaped space 30 and is compacted. The obstacle 31 prevents the co-rotation prevention plate 22 from rotating. Further, the co-rotation preventing plate 22 is not limited to an integral one, but may be divided into two and fixed by bolts or the like.
【００１２】 次に、前記の如く構成された地盤改良装置１０の作用について説明する。先ず 、地盤改良装置１０を所定の掘進機構に取り付け、掘進機構を作動して地盤改良 装置１０の掘削軸１８を時計回り方向に回動する。同時に地盤改良装置１０を下 降する。これにより、ビット翼１２、１２…で地盤が掘削されて掘削孔２４が形 成され。そして、掘削孔２４内には地盤を掘削した掘削土３１と、掘削軸１８の 下端部から供給されたセメントミル等の充填剤３０とが充填された状態になって いる。Next, the operation of the ground improvement device 10 configured as described above will be described. First, the ground improvement device 10 is attached to a predetermined excavation mechanism, and the excavation mechanism is operated to rotate the excavation shaft 18 of the ground improvement device 10 in the clockwise direction. At the same time, the ground improvement device 10 is lowered. As a result, the ground is excavated by the bit blades 12, 12, ... And the excavation hole 24 is formed. The excavated hole 31 is filled with excavated soil 31 excavated from the ground and a filler 30 such as a cement mill supplied from the lower end of the excavation shaft 18.
【００１３】 さらに、地盤改良装置１０を下降すると、共回り防止板２２が掘削孔２４内に 貫入する。この場合、掘削土３１及び充填剤３０はビット翼１２、１２…の回転 で、時計回り方向に回転してるので、掘削孔２４内に貫入した共回り防止板２２ は掘削孔２４内の掘削土３１及び充填剤３２と共に時計回り方向に回転する。し かしながら、掘削土３１及び充填剤３２が楔状の空間３０に充填されて圧密され るので、圧密された掘削土３１が障害となって共回り防止板２２の回動が阻止さ れる。これにより、共回り防止板２２は回転が静止した状態で掘削土３１内に貫 入する。従って、共回り防止板２２が堰のような役割を果たすので、ビット翼１ ２、１２…と共に回転している掘削土３１及び充填剤３２が共回り防止板２２で 堰止めされて静止する。Further, when the ground improvement device 10 is lowered, the co-rotation preventing plate 22 penetrates into the excavation hole 24. In this case, since the excavated soil 31 and the filler 30 are rotating in the clockwise direction by the rotation of the bit blades 12, 12, ..., The co-rotation preventing plate 22 penetrating into the excavated hole 24 is the excavated soil in the excavated hole 24. Rotate clockwise with 31 and filler 32. However, since the excavated soil 31 and the filler 32 are filled and compacted in the wedge-shaped space 30, the compacted excavated soil 31 interferes with the rotation of the co-rotation preventing plate 22. As a result, the co-rotation preventing plate 22 penetrates into the excavated soil 31 in a state in which the rotation is stationary. Therefore, since the co-rotation prevention plate 22 plays a role of a weir, the excavated soil 31 and the filler 32, which are rotating together with the bit blades 12, 12, ..., Are blocked by the co-rotation prevention plate 22 and stand still.
【００１４】 この状態で、さらに地盤改良装置１０を下降して攪拌翼１４、１４…を掘削土 ３１及び充填剤３０内に貫入する。攪拌翼１４、１４…は掘削軸１８に固定され ているので、時計回り方向に回転しながら掘削土３１及び充填剤３２内に貫入す る。従って、共回り防止板２２で堰止めされて静止した掘削土３１及び充填剤３ ２が、共回り防止板２２の上方に移動するので、静止した掘削土３１の土塊は攪 拌翼１４、１４…で剪断粉砕される。そして、剪断粉砕された掘削土３１と充填 剤３２は攪拌翼１４、１４…で攪拌される。従って、掘削土３１や充填剤３０の 攪拌、混合性能の向上を図ることができるので、地盤改良の質の向上が図られる 。In this state, the ground improvement device 10 is further lowered to penetrate the stirring blades 14, 14 ... into the excavated soil 31 and the filler 30. Since the stirring blades 14, 14 ... Are fixed to the excavation shaft 18, they penetrate into the excavated soil 31 and the filler 32 while rotating in the clockwise direction. Therefore, the excavated soil 31 and the filler 32, which are stopped by the co-rotation prevention plate 22 and are stationary, move above the co-rotation prevention plate 22, so that the clod of the stationary excavated soil 31 is stirred by the stirring blades 14, 14. It is sheared and crushed by. The sheared and ground excavated soil 31 and the filler 32 are agitated by the agitating blades 14, 14, .... Therefore, since it is possible to improve the stirring and mixing performance of the excavated soil 31 and the filler 30, it is possible to improve the quality of ground improvement.
【００１５】 前記実施例では共回り防止板２２の傾斜状の折曲部２２Ａを共回り防止板２２ の回転方向側に設けたが、これに限らず、図３に示すように共回り防止板３６の 外端部を共回り防止板３６の回転方向側と反対側に折り曲げた折曲部３６Ａを形 成してもよい。この場合、掘削土３１及び充填剤が楔状の空間３８に充填されて 圧密されるので、圧密された掘削土３１及び充填剤が障害となって共回り防止板 ３６の回動が阻止される。尚、図３上で図２と同一類似部材については同一符号 を付して説明を省略する。In the above embodiment, the inclined bent portion 22A of the co-rotation prevention plate 22 is provided on the rotation direction side of the co-rotation prevention plate 22, but the invention is not limited to this, and the co-rotation prevention plate 22 may be provided as shown in FIG. You may form the bending part 36A which bent the outer end part of 36 to the opposite side to the rotation direction side of the co-rotation prevention plate 36. In this case, since the excavated soil 31 and the filler are filled and compacted in the wedge-shaped space 38, the compacted excavated soil 31 and the filler interfere with the rotation of the co-rotation preventing plate 36. In FIG. 3, the same members as those in FIG. 2 are designated by the same reference numerals and the description thereof will be omitted.
【００１６】 前記実施例では共回り防止板２２や共回り防止板３６を直線状に配設したがこ れに限定されるものではない。また、共回り防止板２２や共回り防止板３６は攪 拌翼１４と１４の間に設けてもよい。また、充填剤３２はビット軸１８の先端部 以外にビット近傍のビット軸側面から掘削孔内に供給してもよい。Although the co-rotation preventing plate 22 and the co-rotation preventing plate 36 are linearly arranged in the above embodiment, the present invention is not limited to this. The co-rotation preventing plate 22 and the co-rotation preventing plate 36 may be provided between the stirring blades 14 and 14. Further, the filler 32 may be supplied into the excavation hole not only from the tip of the bit shaft 18 but from the side of the bit shaft near the bit.
【００１７】[0017]
以上説明したように、本考案に係る地盤改良装置によれば、共回り防止板の長 さをビットの掘削径より僅かに小さく設定して、共回り防止板の外端部には所定 角度屈曲した傾斜面を形成して傾斜面と掘削孔壁とで楔状空間を形成した。この 楔状空間に充填された掘削土は圧密されて共回り防止板を静止状態に保持する。 これにより、ビットと共に回転している掘削土が共回り防止板で堰止めされて静 止して、静止した掘削土の土塊は攪拌翼で剪断粉砕される。 As described above, according to the ground improvement device of the present invention, the length of the co-rotation preventive plate is set slightly smaller than the excavation diameter of the bit, and the co-rotation preventive plate is bent at a predetermined angle. The inclined surface was formed, and the wedge-shaped space was formed by the inclined surface and the borehole wall. The excavated soil filled in the wedge-shaped space is consolidated and holds the corotation preventive plate in a stationary state. As a result, the excavated soil rotating with the bit is dammed and stopped by the co-rotation prevention plate, and the stationary mass of excavated soil is sheared and ground by the stirring blade.
【００１８】 このように、共回り防止板の長さをビットの掘削径より僅かに小さく設定して 、掘削孔の外側の地盤に貫入させずに共回り防止板の回動を阻止することができ るので、共回り防止板の両端部を掘削孔の外側の地盤に貫入させる必要がない。 従って、掘削孔の壁面を崩したり、硬い地質や礫等に当接した場合礫等が障害と なって共回り防止板が地盤に貫入できないというトラブルの発生を防止すること ができる。In this way, by setting the length of the co-rotation prevention plate slightly smaller than the excavation diameter of the bit, it is possible to prevent the co-rotation prevention plate from rotating without penetrating into the ground outside the excavation hole. Since it is possible, it is not necessary to penetrate both ends of the co-rotation prevention plate into the ground outside the drill hole. Therefore, it is possible to prevent the occurrence of a trouble in which the co-rotation prevention plate cannot penetrate into the ground because the wall of the excavation hole is broken or the hard geology or gravel or the like interferes with the gravel and the like and prevents the co-rotation prevention plate from penetrating the ground.
【提出日】平成５年１０月１４日[Submission date] October 14, 1993
【手続補正２】[Procedure Amendment 2]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００１６[Correction target item name] 0016
【補正方法】変更[Correction method] Change
【００１６】 前記実施例では共回り防止板２２や共回り防止板３６を直線状に 配設したがこれに限定されるものではない。また、共回り防止板２２や共回り防 止板３６は攪拌翼１４と１４の間に設けてもよい（図４参照）。さらに、充填剤 ３２はビット軸１８の先端部以外にビット近傍のビット軸側面から掘削孔内に供 給してもよい。Although the co-rotation preventing plate 22 and the co-rotation preventing plate 36 are linearly arranged in the above embodiment, the present invention is not limited to this. The co-rotation prevention plate 22 and the co-rotation prevention plate 36 may be provided between the stirring blades 14 and 14 (see FIG. 4). Further, the filler 32 may be supplied into the excavation hole from the side of the bit shaft near the bit other than the tip end of the bit shaft 18.
【図１】本考案に係る地盤改良装置の斜視図FIG. 1 is a perspective view of a ground improvement device according to the present invention.
【図２】図１のＡ−Ａ矢視図FIG. 2 is a view on arrow AA of FIG.
【図３】本考案に係る地盤改良装置の他の実施例を示す
要部拡大図FIG. 3 is an enlarged view of essential parts showing another embodiment of the ground improvement device according to the present invention.
１０…地盤改良装置 １２…ビット翼（ビット） １４…攪拌翼 １８…掘削軸 ２２…共回り防止板 ２２Ａ、３６Ａ…折曲部（傾斜面） ２４…掘削孔 ２４Ａ…壁部（掘削孔壁） ３０…楔状空間 ３１…掘削土 ３２…充填剤 10 ... Ground improvement device 12 ... Bit blade (bit) 14 ... Stirring blade 18 ... Excavation shaft 22 ... Co-rotation prevention plate 22A, 36A ... Bent portion (slope) 24 ... Excavation hole 24A ... Wall portion (excavation wall) 30 ... Wedge-shaped space 31 ... Excavation soil 32 ... Filler
【手続補正書】[Procedure amendment]
【提出日】平成５年１０月１４日[Submission date] October 14, 1993
【手続補正１】[Procedure Amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】実用新案登録請求の範囲[Name of item to be amended] Scope of utility model registration request
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【実用新案登録請求の範囲】[Scope of utility model registration request]
【手続補正３】[Procedure 3]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】図面の簡単な説明[Name of item to be corrected] Brief description of the drawing
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【図面の簡単な説明】[Brief description of drawings]
【図１】本考案に係る地盤改良装置の斜視図FIG. 1 is a perspective view of a ground improvement device according to the present invention.
【図２】図１のＡ−Ａ矢視図FIG. 2 is a view on arrow AA of FIG.
【図３】本考案に係る地盤改良装置の他の実施例を示す
要部拡大図FIG. 3 is an enlarged view of essential parts showing another embodiment of the ground improvement device according to the present invention.
【図４】本考案に係る地盤改良装置の他の実施例を示す
斜視図FIG. 4 is a perspective view showing another embodiment of the ground improvement device according to the present invention.
【手続補正４】[Procedure amendment 4]
【補正対象書類名】図面[Document name to be corrected] Drawing
【補正対象項目名】図４[Name of item to be corrected] Fig. 4
【補正方法】追加[Correction method] Added
【補正内容】[Correction content]
【図４】 [Figure 4]
Claims (1)
を、回転しつつ掘削土と充填剤とを混合攪拌する地盤改
良装置において、 前記ビットと攪拌翼の間及び攪拌翼と攪拌翼の間の少な
くとも一方の間に位置すると共に前記掘削軸に共回り防
止板を回動自在に支持し、前記共回り防止板の長さを前
記ビットの掘削径より僅かに小さく設定すると共に前記
共回り防止板の外端部には所定角度屈曲した傾斜面を形
成し、該傾斜面と掘削孔壁とで形成された楔状空間で前
記共回り防止板を静止させることを特徴とする地盤改良
装置。1. A ground improvement device for mixing and stirring excavated soil and a filler while rotating an excavation shaft provided with a bit and a stirring blade, wherein between the bit and the stirring blade and between the stirring blade and the stirring blade. Of the co-rotation prevention plate is rotatably supported by the excavation shaft, and the length of the co-rotation prevention plate is set to be slightly smaller than the excavation diameter of the bit and the co-rotation prevention is performed. A ground improvement device characterized in that an inclined surface bent at a predetermined angle is formed at an outer end portion of the plate, and the co-rotation preventing plate is made to stand still in a wedge-shaped space formed by the inclined surface and a wall of an excavation hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3878293U JP2538052Y2 (en) | 1993-07-15 | 1993-07-15 | Ground improvement equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3878293U JP2538052Y2 (en) | 1993-07-15 | 1993-07-15 | Ground improvement equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0710032U true JPH0710032U (en) | 1995-02-10 |
| JP2538052Y2 JP2538052Y2 (en) | 1997-06-04 |
Family
ID=12534870
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3878293U Expired - Lifetime JP2538052Y2 (en) | 1993-07-15 | 1993-07-15 | Ground improvement equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2538052Y2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6347885B1 (en) * | 2017-12-01 | 2018-06-27 | 有限会社 櫂設計事務所 | Drilling and stirring tools |
| JP2023101914A (en) * | 2022-01-11 | 2023-07-24 | 昌尚 橋本 | Ground improvement machine |
-
1993
- 1993-07-15 JP JP3878293U patent/JP2538052Y2/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6347885B1 (en) * | 2017-12-01 | 2018-06-27 | 有限会社 櫂設計事務所 | Drilling and stirring tools |
| JP2019100068A (en) * | 2017-12-01 | 2019-06-24 | 有限会社 櫂設計事務所 | Excavation-agitation tool |
| JP2023101914A (en) * | 2022-01-11 | 2023-07-24 | 昌尚 橋本 | Ground improvement machine |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2538052Y2 (en) | 1997-06-04 |
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