JP2001032662A - Earth auger - Google Patents
Earth augerInfo
- Publication number
- JP2001032662A JP2001032662A JP11206150A JP20615099A JP2001032662A JP 2001032662 A JP2001032662 A JP 2001032662A JP 11206150 A JP11206150 A JP 11206150A JP 20615099 A JP20615099 A JP 20615099A JP 2001032662 A JP2001032662 A JP 2001032662A
- Authority
- JP
- Japan
- Prior art keywords
- spiral rod
- earth auger
- blade
- inner shaft
- peripheral surface
- 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.)
- Pending
Links
Landscapes
- Earth Drilling (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、アースオーガに関
する。[0001] The present invention relates to an earth auger.
【０００２】[0002]
【従来の技術】従来、図１で示すように、重機１の前端
部にリーダ２を立設し、同リーダ２にて下端に掘削刃体
７を装着したスパイラルロッド６を昇降自在に支持し、
同スパイラルロッド６の上端部とリーダ２との間に設け
たモータ４によりスパイラルロッド６を回転させて地盤
に略垂直な掘削孔を削孔するアースオーガＡがある。2. Description of the Related Art Conventionally, as shown in FIG. 1, a leader 2 is erected at a front end of a heavy equipment 1 and a spiral rod 6 having a cutting blade 7 attached to a lower end thereof is supported by the leader 2 so as to be able to move up and down. ,
There is an earth auger A that drills a substantially vertical excavation hole in the ground by rotating the spiral rod 6 by a motor 4 provided between the upper end of the spiral rod 6 and the reader 2.
【０００３】[0003]
【発明が解決しようとする課題】ところが、上記地盤中
の岩石や地盤の硬軟等により、掘進作業の中途で掘削刃
体７が傾斜すると、掘削刃体７が傾斜した方向に掘り進
み、そのため、掘削孔の垂直性が損なわれて、杭頭部と
着底部との平面図上の位置が一致しないという不具合が
生じたり、中途から屈折したりして品質が低下し、ま
た、爾後の作業等に支障を来すことがあった。However, if the excavating blade 7 is inclined in the middle of the excavation work due to rocks in the ground or the hardness of the ground, etc., the excavating blade 7 digs in the inclined direction. The verticality of the borehole is impaired, causing the position of the pile head and the bottom to be inconsistent with each other in the plan view. Sometimes hindered.
【０００４】[0004]
【課題を解決するための手段】そこで、本発明では、先
端に掘削刃体を装着したスパイラルロッドを回転させて
地盤を掘削するアースオーガにおいて、上記掘削刃体の
近傍にスパイラルロッドの前後及び左右２方向の傾斜を
計測可能の傾斜計を設けたことを特徴とするアースオー
ガを提供せんとするものである。Therefore, according to the present invention, there is provided an earth auger for excavating ground by rotating a spiral rod having an excavation blade attached to the tip thereof, in the vicinity of the excavation blade, in front of and behind the spiral rod. An earth auger characterized by providing an inclinometer capable of measuring inclination in two directions is provided.
【０００５】また、次のような特徴を併せ有するもので
ある。[0005] The present invention also has the following features.
【０００６】上記スパイラルロッドを中空軸に形成し、
同スパイラルロッドの内部にスパイラルロッドと一体的
に昇降するが回転はしない内軸を挿通し、同内軸の下端
部に上記傾斜計を装着したこと。[0006] The spiral rod is formed in a hollow shaft,
An inner shaft that moves up and down but does not rotate integrally with the spiral rod is inserted into the spiral rod, and the inclinometer is attached to the lower end of the inner shaft.
【０００７】上記スパイラルロッドの下端部内周面と内
軸外周面との間にグランドパッキンを介装したこと。A gland packing is interposed between the inner peripheral surface of the lower end of the spiral rod and the outer peripheral surface of the inner shaft.
【０００８】上記掘削刃体に半径方向に拡張可能の拡張
刃体を付設したこと。[0008] The excavating blade is provided with an expanding blade that is expandable in a radial direction.
【０００９】上記スパイラルロッドの内周面と内軸の外
周面との間に間隙を設け、同間隙をスラリー通路とした
こと。A gap is provided between the inner peripheral surface of the spiral rod and the outer peripheral surface of the inner shaft, and the gap is used as a slurry passage.
【００１０】[0010]
【発明の実施の形態】本発明の実施の形態は次の通りで
ある。DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention are as follows.
【００１１】前記スパイラルロッドを中空軸に形成し、
同スパイラルロッド中に、内軸と外軸とで二重管に構成
した二重軸を、スパイラルロッドと一体的に昇降する
が、回転はしないように挿入し、外軸の下端外周面とス
パイラルロッドの内周面との間に軸封装置を兼ねるグラ
ンドパッキンを介装して、二重軸下端部とスパイラルロ
ッド下端部との傾斜とを一致させ、内軸の上記グランド
パッキンの下方位置に、前後及び左右方向の傾斜を計測
可能の傾斜計を装着して、同傾斜計を掘削刃体の近傍に
おけるスパイラルロッドの傾斜を計測し、この計測値を
重機に設けた演算装置で処理して、表示部にスパイラル
ロッド下端部の傾斜を表示すると共に、掘削刃体の偏心
量が後述する修正可能限界に達したことを表示して、作
業者に修正作業を促すようにしている。The spiral rod is formed in a hollow shaft,
In the same spiral rod, a double shaft composed of a double tube with an inner shaft and an outer shaft is vertically moved up and down integrally with the spiral rod, but inserted so as not to rotate, and the lower end outer peripheral surface of the outer shaft and the spiral are inserted. A gland packing also serving as a shaft sealing device is interposed between the inner peripheral surface of the rod and the inclination of the lower end of the double shaft and the lower end of the spiral rod to match, and the inner shaft is positioned below the gland packing. By installing an inclinometer capable of measuring the inclination in the front-back and left-right directions, the inclinometer measures the inclination of the spiral rod in the vicinity of the excavating blade, and the measured value is processed by an arithmetic unit provided in the heavy equipment. In addition, the display unit displays the inclination of the lower end of the spiral rod, and displays that the amount of eccentricity of the excavation blade has reached a correction limit, which will be described later, so as to prompt the operator to perform a correction operation.
【００１２】また、上記スパイラルロッドと内軸との間
に外軸を挿入し、同外軸と内軸との間隙にスラリー注入
装置を連通連結して、スパイラルロッドの下端からセメ
ントミルク等のスラリーを掘削孔中に注入できるように
している。Further, an outer shaft is inserted between the spiral rod and the inner shaft, and a slurry injection device is communicatively connected to a gap between the outer shaft and the inner shaft. Can be injected into the borehole.
【００１３】[0013]
【実施例】本発明の実施例について図面を参照して説明
する。Embodiments of the present invention will be described with reference to the drawings.
【００１４】図１は、本発明に係るアースオーガＡを示
しており、同アースオーガＡは、無限軌道式の走行装置
を具備して自走可能の重機１の前端部にリーダ２を略垂
直に立設し、同リーダ２の前側面にスライダ３を上下摺
動自在に取付け、同スライダ３の前側面にモータ４を装
着し、同モータ４の出力軸に減速機５を介してをスパイ
ラルロッド６の上端を固着し、同スパイラルロッド６の
下端に掘削刃体７を固着して、モータ４によりスパイラ
ルロッド６を介して掘削刃体７を回転させて、地盤Ｇに
平面視略円形状の掘削孔８を略垂直に削孔するようにし
ており、掘削土をスパイラルロッド６の外周に形成した
スクリュー羽根９により掘削孔８外に排出するようにし
ている。FIG. 1 shows an earth auger A according to the present invention. The earth auger A is provided with a traveling device of an endless track type, and a reader 2 is attached to a front end of a self-propelled heavy machine 1 substantially vertically. , A slider 3 is mounted on the front side of the reader 2 so as to be slidable up and down, a motor 4 is mounted on the front side of the slider 3, and the output shaft of the motor 4 is spirally connected via a speed reducer 5. The upper end of the rod 6 is fixed, the excavating blade 7 is fixed to the lower end of the spiral rod 6, and the excavating blade 7 is rotated by the motor 4 via the spiral rod 6, so that the ground G is substantially circular in plan view. The drilling hole 8 is drilled substantially vertically, and the excavated soil is discharged out of the drilling hole 8 by screw blades 9 formed on the outer periphery of the spiral rod 6.
【００１５】特に、本実施例では、図２及び図３で示す
ように、上記スパイラルロッド６を中空筒状に形成し、
同スパイラルロッド６中に、筒状の外軸10の内部に筒状
の内軸11を挿通し、内軸11の外面から所定の上下間隔を
設けて放射状に突設した連結突起14を介し、外軸10と内
軸11とを連結して構成した二重軸12を、上記スパイラル
ロッド６と一体的に昇降するが回転はしないように挿通
し、スパイラルロッド６の下端部内周面と外軸10の下端
部外周面との間にグランドパッキン13を介装して、上記
内軸11の下端部とスパイラルロッド６の下端部との傾斜
とを一致させると共に、二重軸12の上端を前記減速機５
の上方に突出させ、同突出端部にスラリーホース15を連
通連結して、外軸10と内軸11との間隙をスラリー通路16
とし、外軸10の下端を開放して、スパイラルロッド６の
下端に設けたノズル17からセメントミルク等のスラリー
18を地中に注入できるようにしている。In particular, in this embodiment, as shown in FIGS. 2 and 3, the spiral rod 6 is formed in a hollow cylindrical shape.
In the same spiral rod 6, a cylindrical inner shaft 11 is inserted into a cylindrical outer shaft 10, and via a connecting protrusion 14 radially protruding from the outer surface of the inner shaft 11 with a predetermined vertical interval, A double shaft 12 formed by connecting an outer shaft 10 and an inner shaft 11 is inserted so as to move up and down integrally with the spiral rod 6 but not to rotate, so that a lower end inner peripheral surface of the spiral rod 6 and the outer shaft A gland packing 13 is interposed between the lower end of the inner shaft 11 and the lower end of the spiral rod 6 so that the inclination of the lower end of the spiral rod 6 coincides with the inclination of the lower end of the inner shaft 11. Reduction gear 5
And a slurry hose 15 is communicatively connected to the protruding end so that a gap between the outer shaft 10 and the inner shaft 11 is formed in the slurry passage 16.
The lower end of the outer shaft 10 is opened, and a slurry of cement milk or the like is supplied through a nozzle 17 provided at the lower end of the spiral rod 6.
18 can be injected into the ground.
【００１６】また、上記内軸11の下端を外軸10の下端よ
りも下方に突出させ、その突出端に前後及び左右方向の
傾斜を計測可能の傾斜計Ｓを連設し、同内軸11の上端を
前記二重軸12の突出端部よりも上方に突出させ、同内軸
11中を挿通した信号ケーブル19を介して、上記傾斜計Ｓ
と重機１の内部に設けたコンピュータ等の演算機能を具
備する演算部20を接続し、同演算部20に液晶画面等を具
備する表示部21を接続して、前記スパイラルロッド６の
下端部及び同下端部に連設した掘削刃体７の前後及び左
右方向の傾斜を計測し、上記演算部20に接続した表示部
21に計測結果と、後述する掘削刃体７の偏心量ｄと、修
正可能限度とを表示するようにしている。The lower end of the inner shaft 11 is protruded below the lower end of the outer shaft 10, and an inclinometer S capable of measuring the front-back and left-right inclination is connected to the protruding end. The upper end of the inner shaft is projected above the projecting end of the double shaft 12,
The inclinometer S is connected via a signal cable 19 passing through
And a computing unit 20 having a computing function such as a computer provided inside the heavy equipment 1, a display unit 21 having a liquid crystal screen or the like is connected to the computing unit 20, and a lower end of the spiral rod 6 and The display unit connected to the calculation unit 20 measures the inclination of the excavation blade 7 connected to the lower end in the front-rear and left-right directions.
A measurement result, an eccentric amount d of the excavating blade body 7 described later, and a correction limit are displayed at 21.
【００１７】図４〜図６は、掘削刃体７を示しており、
同掘削刃体７の外周先端部に拡張刃体22の基端を、略上
下方向に伸延した枢軸23を介し回動自在に枢着して、掘
削刃体７を正回転（通常掘削時の回転）させたときは、
地盤Ｇの抵抗により拡張刃体22が掘削刃体７の背面に隠
れ、掘削刃体７を逆回転させたときは、掘削土の抵抗に
より拡張刃体22の先端が掘削刃体７の外周から外側に突
出して、この突出量r1だけ掘削孔の半径を拡張できるよ
うにしている。4 to 6 show the digging blade 7.
A base end of the extended blade body 22 is pivotally connected to a distal end portion of the outer periphery of the excavated blade body 7 via a pivot 23 extending in a substantially vertical direction so that the excavated blade body 7 is rotated forward (normally during excavation). Rotation)
When the extension blade 22 is hidden behind the excavation blade 7 due to the resistance of the ground G and the excavation blade 7 is rotated in the reverse direction, the tip of the extension blade 22 extends from the outer periphery of the excavation blade 7 due to the resistance of the excavated soil. It protrudes outward so that the radius of the excavation hole can be expanded by this amount of projection r1.
【００１８】図７及び図８は、屈折の検出及び偏心量計
測の手順を示しており、図７及び図８で示すように、掘
削途中で、掘削孔８の屈折の原因であるスパイラルロッ
ド６先端部の傾斜が発生すると、傾斜計Ｓからこの傾斜
量に対応した電気信号が演算部20に送られ、この電気信
号を演算部20で処理して、スパイラルロッド６の傾斜角
度θと偏心量ｄとを表示部21に表示する。FIGS. 7 and 8 show the procedure for detecting refraction and measuring the amount of eccentricity. As shown in FIGS. 7 and 8, during the excavation, the spiral rod 6 causing the refraction of the excavation hole 8 is used. When the tip is tilted, an electric signal corresponding to the amount of inclination is sent from the inclinometer S to the calculating unit 20, and the electric signal is processed by the calculating unit 20, and the inclination angle θ of the spiral rod 6 and the eccentricity are calculated. and d are displayed on the display unit 21.
【００１９】上記傾斜角度θは、使用した傾斜計Ｓごと
に定められた処理によって、演算部20に入力した信号を
角度に変換して表示部21に表示する。The tilt angle θ is obtained by converting a signal input to the arithmetic unit 20 into an angle by a process determined for each inclinometer S used and displaying the angle on the display unit 21.
【００２０】偏心量ｄは、上記傾斜角度θと、掘削刃体
７の深さＬ（掘削開始時に掘削刃体７が地表に接したと
きから傾斜計測時までに掘削刃体７が地盤Ｇに侵入した
深さ長さであって、スパイラルロッド６の昇降量から計
測可能である）とから、同演算部20で、上記傾斜角度θ
と掘削刃体７の地表からの深さＬとを、下記の式に従っ
て演算して表示部21に表示する。The amount of eccentricity d is determined by the inclination angle θ and the depth L of the excavating blade 7 (from when the excavating blade 7 comes into contact with the ground surface at the start of excavation until the inclination is measured, the excavating blade 7 The calculated depth is the length of penetration and can be measured from the amount of elevation of the spiral rod 6).
And the depth L of the excavation blade 7 from the ground surface are calculated according to the following equation and displayed on the display unit 21.
【００２１】ｄ＝Ｌ tanθ 更に、上記偏心量ｄが、前記拡張刃体22の突出量r1、即
ち、修正可能限度に達しているか否かを判断し、修正可
能限度に達している場合は、表示部21にその旨を表示し
て修正を促すようにしている。D = L tanθ Further, it is determined whether or not the eccentricity d has reached the protrusion amount r1 of the extended blade body 22, that is, whether or not the correction limit has been reached. This is displayed on the display unit 21 to urge the user to make a correction.
【００２２】図９及び図１０は、掘削孔８が屈折した場
合の修正作業の手順を示しており、上記偏心量ｄが修正
可能限度に達すると、スパイラルロッド６を逆回転させ
て拡張刃体22を外側に突出させ、この状態を保持しなが
らスパイラルロッド６を屈折開始位置まで上昇させ、こ
の部分の掘削孔８の半径を突出量r1だけ拡張して、掘削
刃体７外側端と拡張した掘削孔内周面の間に間隙を発生
させ、スパイラルロッド６の弾性により、スパイラルロ
ッド６を垂直姿勢に復帰させる。FIGS. 9 and 10 show a procedure of a correction operation when the drilling hole 8 is bent. When the eccentricity d reaches the correctionable limit, the spiral rod 6 is reversely rotated to extend the blade. The spiral rod 6 is raised to the refraction start position while maintaining this state, and the radius of the excavation hole 8 in this portion is extended by the projection amount r1 to extend with the outer end of the excavation blade 7. A gap is generated between the inner peripheral surfaces of the excavation holes, and the spiral rod 6 is returned to the vertical posture by the elasticity of the spiral rod 6.
【００２３】このようにして、スパイラルロッド６が垂
直姿勢に復帰すると、再びスパイラルロッド６を正回転
させながら下降させて掘削作業を続行し、屈折のない掘
削孔８を形成することができる。In this way, when the spiral rod 6 returns to the vertical position, the spiral rod 6 is lowered while rotating forward again to continue the excavation work, and the excavation hole 8 without refraction can be formed.
【００２４】また、別の手順として、掘削作業中、一定
の深さL1を掘進するごとに、傾斜角度θを測定してL1 t
anθを算出し、このようにして算出した値を順次加算し
て、加算した値が修正可能限度に達すると、警報を発し
て屈折修正作業の開始を促したり、上記傾斜角度θを常
時監視して、同傾斜角度θが予め設定した範囲（角度）
を越えた時点での掘削刃体θの深さL1と、傾斜角度θと
を演算部20に記憶させておき、同起点から下方に掘進し
た深さL1として、L1 tanθが前記修正可能限度を越える
と、警報を発して屈折修正作業の開始を促したりするこ
ともできる。As another procedure, during the excavation work, every time when excavating a certain depth L1, the inclination angle θ is measured and L1 t
Anθ is calculated, the values thus calculated are sequentially added, and when the added value reaches the correction limit, an alarm is issued to prompt the start of refraction correction work, or the inclination angle θ is constantly monitored. And the inclination angle θ is within a preset range (angle).
The depth L1 of the excavation blade θ at the point of exceeding and the inclination angle θ are stored in the calculation unit 20, and as the depth L1 excavated downward from the same starting point, L1 tan θ is the correction limit. If it does, a warning may be issued to prompt the start of refraction correction work.
【００２５】また、所定深さの掘削孔８を形成した後、
前記ノズル17からセメントミルク等のスラリー18を地中
に注入して、地盤Ｇ中に現場成形杭を形成することがで
き、掘削孔８が垂直に形成され、かつ、屈折していない
ので、掘削孔８形成後に鉄筋等を挿入するのが容易にな
り、また、上記現場成形杭をラップさせて地中壁を形成
して遮水や土止め等に利用することができる。Further, after forming the drilling hole 8 having a predetermined depth,
A slurry 18 such as cement milk or the like is injected into the ground from the nozzle 17 to form an in-situ formed pile in the ground G, and the drilling hole 8 is formed vertically and is not bent. After the hole 8 is formed, it becomes easy to insert a reinforcing bar or the like, and the above-mentioned in-situ formed pile is wrapped to form an underground wall, which can be used for water shielding and earth retaining.
【００２６】[0026]
【発明の効果】本発明によれば次のような効果を得るこ
とができる。According to the present invention, the following effects can be obtained.
【００２７】請求項１記載の発明では、先端に掘削刃体
を装着したスパイラルロッドを回転させて地盤を掘削す
るアースオーガにおいて、上記掘削刃体の近傍にスパイ
ラルロッドの前後及び左右２方向の傾斜を計測可能の傾
斜計を設けたことによって、地盤中におけるスパイラル
ロッドの傾斜を計測して、掘削孔を垂直に形成したり、
屈折を防止したりすることができる。According to the first aspect of the present invention, in an earth auger for excavating a ground by rotating a spiral rod having an excavation blade attached to a tip thereof, an inclination of the spiral rod in two directions, front and rear and left and right, is provided near the excavation blade. By providing an inclinometer capable of measuring the slope, by measuring the inclination of the spiral rod in the ground, to form a drilled hole vertically,
Or refraction can be prevented.
【００２８】請求項２記載の発明では、上記スパイラル
ロッドを中空軸に形成し、同スパイラルロッドの内部に
スパイラルロッドと一体的に昇降するが回転はしない内
軸を挿通し、同内軸の下端部に上記傾斜計を装着したこ
とによって、傾斜計を掘削刃体に近接させて配置するこ
とができ、しかも、傾斜計が回転しないので傾斜の方向
を容易に検出することができる。According to the second aspect of the present invention, the spiral rod is formed in a hollow shaft, and an inner shaft which moves up and down integrally with the spiral rod but does not rotate is inserted into the spiral rod, and a lower end of the inner shaft is formed. By mounting the above-mentioned inclinometer on the part, the inclinometer can be arranged close to the excavating blade body, and the direction of the inclination can be easily detected since the inclinometer does not rotate.
【００２９】請求項３記載の発明では、上記スパイラル
ロッドの下端部内周面と内軸外周面との間にグランドパ
ッキンを介装したことにより、スパイラルロッド下端部
の傾斜を傾斜計に正確に伝達して計測精度を高めること
ができる。According to the third aspect of the present invention, the inclination of the lower end of the spiral rod is accurately transmitted to the inclinometer by interposing the gland packing between the inner peripheral surface of the lower end of the spiral rod and the outer peripheral surface of the inner shaft. Measurement accuracy can be improved.
【００３０】請求項４記載の発明では、上記掘削刃体に
半径方向に拡張可能の拡張刃体を付設したことによっ
て、掘削途中で掘削方向が傾斜した場合でも、掘削方向
を修正して垂直な屈折のない掘削孔を形成することがで
きる。According to the fourth aspect of the present invention, since the excavating blade is provided with an expanding blade which can be expanded in the radial direction, even if the excavating direction is inclined during excavation, the excavating direction is corrected and the vertical direction is increased. A borehole without refraction can be formed.
【００３１】請求項５記載の発明では、上記スパイラル
ロッドの内周面と内軸の外周面との間に間隙を設け、同
間隙をスラリー通路としたことによって、別途にスラリ
ー通路の配設を要せず、構造を簡単にすることができ
る。According to the fifth aspect of the present invention, a gap is provided between the inner peripheral surface of the spiral rod and the outer peripheral surface of the inner shaft, and the gap is used as a slurry passage. It is unnecessary, and the structure can be simplified.
【図１】本発明に係るアースオーガの側面図。FIG. 1 is a side view of an earth auger according to the present invention.
【図２】同アースオーガの構成を示す側面説明図。FIG. 2 is an explanatory side view showing the configuration of the earth auger.
【図３】スパイラルロッド下端部の一部断面側面図。FIG. 3 is a partial cross-sectional side view of a lower end portion of the spiral rod.
【図４】掘削刃体の平面図。FIG. 4 is a plan view of a cutting blade body.
【図５】掘削刃体の側面図。FIG. 5 is a side view of the excavating blade.
【図６】掘削刃体の側面図。FIG. 6 is a side view of the excavating blade.
【図７】本発明アースオーガの作用を示す説明図。FIG. 7 is an explanatory view showing the operation of the earth auger of the present invention.
【図８】本発明アースオーガの作用を示す説明図。FIG. 8 is an explanatory view showing the operation of the earth auger of the present invention.
【図９】本発明アースオーガの作用を示す説明図。FIG. 9 is an explanatory view showing the operation of the earth auger of the present invention.
【図１０】本発明アースオーガの作用を示す説明図。FIG. 10 is an explanatory view showing the operation of the earth auger of the present invention.
Ａ アースオーガ Ｓ 傾斜計 ６ スパイラルロッド ７ 掘削刃体 11 内軸 13 グランドパッキン 22 拡張刃体 A Earth Auger S Inclinometer 6 Spiral rod 7 Drilling blade 11 Inner shaft 13 Gland packing 22 Expansion blade
Claims (5)
ッドを回転させて地盤を掘削するアースオーガにおい
て、 上記掘削刃体の近傍にスパイラルロッドの前後及び左右
２方向の傾斜を計測可能の傾斜計を設けたことを特徴と
するアースオーガ。An earth auger for excavating a ground by rotating a spiral rod having an excavation blade attached to a tip thereof, wherein an inclinometer capable of measuring inclination of the spiral rod in two directions, front and rear and right and left, near the excavation blade. Earth auger characterized by having a.
し、同スパイラルロッドの内部にスパイラルロッドと一
体的に昇降するが回転はしない内軸を挿通し、同内軸の
下端部に上記傾斜計を装着したことを特徴とする請求項
１記載のアースオーガ。2. The spiral rod is formed in a hollow shaft, and an inner shaft that moves up and down but does not rotate integrally with the spiral rod is inserted into the spiral rod, and the inclinometer is attached to the lower end of the inner shaft. The earth auger according to claim 1, wherein the earth auger is mounted.
内軸外周面との間にグランドパッキンを介装したことを
特徴とする請求項１又は２記載のアースオーガ。3. The earth auger according to claim 1, wherein a gland packing is interposed between the inner peripheral surface of the lower end portion of the spiral rod and the outer peripheral surface of the inner shaft.
張刃体を付設したことを特徴とする請求項１〜３のいず
れかに記載のアースオーガ。4. The earth auger according to claim 1, wherein said excavating blade is provided with an expanding blade which is expandable in a radial direction.
外周面との間に間隙を設け、同間隙をスラリー通路とし
たことを特徴とする請求項１〜４のいずれかに記載のア
ースオーガ。5. The ground according to claim 1, wherein a gap is provided between an inner peripheral surface of the spiral rod and an outer peripheral surface of the inner shaft, and the gap is used as a slurry passage. Ogre.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11206150A JP2001032662A (en) | 1999-07-21 | 1999-07-21 | Earth auger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11206150A JP2001032662A (en) | 1999-07-21 | 1999-07-21 | Earth auger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2001032662A true JP2001032662A (en) | 2001-02-06 |
Family
ID=16518634
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11206150A Pending JP2001032662A (en) | 1999-07-21 | 1999-07-21 | Earth auger |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2001032662A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009299459A (en) * | 2008-06-13 | 2009-12-24 | Bauer Maschinen Gmbh | Excavating machine and excavation method |
| JP2020056221A (en) * | 2018-10-02 | 2020-04-09 | 株式会社奥村組 | Ground support force checking method |
| JP2021063396A (en) * | 2019-10-16 | 2021-04-22 | 株式会社安藤・間 | Method and device for correcting hole bending in rotary drilling construction |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009299459A (en) * | 2008-06-13 | 2009-12-24 | Bauer Maschinen Gmbh | Excavating machine and excavation method |
| JP2020056221A (en) * | 2018-10-02 | 2020-04-09 | 株式会社奥村組 | Ground support force checking method |
| JP7257650B2 (en) | 2018-10-02 | 2023-04-14 | 株式会社奥村組 | How to confirm the bearing capacity of the ground |
| JP2021063396A (en) * | 2019-10-16 | 2021-04-22 | 株式会社安藤・間 | Method and device for correcting hole bending in rotary drilling construction |
| JP7370212B2 (en) | 2019-10-16 | 2023-10-27 | 株式会社安藤・間 | Method and device for correcting hole bending in rotary drilling |
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