JPH0355387A - Auger for excavation of pile hole - Google Patents
Auger for excavation of pile holeInfo
- Publication number
- JPH0355387A JPH0355387A JP18807789A JP18807789A JPH0355387A JP H0355387 A JPH0355387 A JP H0355387A JP 18807789 A JP18807789 A JP 18807789A JP 18807789 A JP18807789 A JP 18807789A JP H0355387 A JPH0355387 A JP H0355387A
- Authority
- JP
- Japan
- Prior art keywords
- auger
- shaft rod
- bits
- hole
- blade
- 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
- 238000009412 basement excavation Methods 0.000 title claims abstract description 13
- 238000005553 drilling Methods 0.000 claims description 19
- 238000000034 method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000002689 soil Substances 0.000 description 3
- 238000007664 blowing Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
Landscapes
- Earth Drilling (AREA)
Abstract
Description
【発明の詳細な説明】
(産業上の利用分野)
この発明は、拡大縮小掘削刃を一つ又は上下二つ具備し
た杭穴掘削用オーガーに関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an auger for excavating pile holes equipped with one or two enlarged/reduced excavating blades.
(従来の技術)
従来、オーガーの掘削刃を拡大縮小する考案は色々と知
られている。その多くは回転力を利用してオーガー軸に
取付けた腕杆を、拡大又は縮小する構戊をとっていた。(Prior Art) Conventionally, various ideas for enlarging and reducing the digging blade of an auger are known. Most of them utilize rotational force to expand or contract an arm rod attached to an auger shaft.
(発明により解決すべき課題)
従来知られていた拡大縮小できる掘削刃は、方向の回転
により拡大し、他方向の回転により縮小している。然し
乍ら、回転時の掘削刃の摩擦により拡大縮小するので、
何等かの理由により拡大縮小力が掘削刃の摩擦より大き
い場合には、十分に拡大し、又は十分に縮小できない問
題点があった。また、前記は横方向の刃片が穴壁に接触
した場合に拡大縮小するので、この方式は最下端の掘削
刃の拡大縮小には効率的でない問題点があった。(Problems to be Solved by the Invention) Conventionally known excavating blades that can be expanded and contracted expand by rotating in one direction and contract by rotating in the other direction. However, since it expands and contracts due to the friction of the drilling blade when rotating,
If the enlarging/reducing force is greater than the friction of the excavating blade for some reason, there is a problem in that it cannot be sufficiently enlarged or reduced sufficiently. Further, in the above method, the cutting blade in the horizontal direction is enlarged or reduced when it comes into contact with the hole wall, so this method has a problem in that it is not efficient in enlarging or reducing the cutting blade at the lowest end.
(課題を解決する為の手段)
然るにこの発明は、拡大縮小できる掘削刃を軸杆へ上下
二段に設けたので、拡大すべき、掘削すべき穴を上下等
径に掘削することができるようにしたものである。また
、軸杆の下部に腕杆の基部を横軸により回転自在に取付
けたので、通常オーガーを持ち上げることにより縮小し
、オーガーを穴底へ押しつけることにより拡大するよう
にして、前記従来の問題点を解決したのである。(Means for Solving the Problems) However, in this invention, the drilling blades that can be enlarged and reduced are provided on the shaft rod in two stages, upper and lower, so that the hole to be enlarged and excavated can be excavated with the same diameter in the upper and lower sides. This is what I did. In addition, since the base of the arm rod is rotatably attached to the lower part of the shaft rod by means of a horizontal axis, the auger is normally reduced by lifting it, and expanded by pressing the auger against the bottom of the hole, thereby solving the problems of the conventional method. This solved the problem.
即ちこの発明の一つは、中央部に透孔を穿設し、上部に
接続部を設けた軸杆の外側壁に、掘削刃を設けたオーガ
ーにおいて、前記軸杆には拡大縮小できる掘削刃を上下
二段に設けたことを特徴とする杭穴掘削用オーガーであ
る。That is, one of the inventions is an auger in which a drilling blade is provided on the outer wall of a shaft rod that has a through hole in the center and a connecting portion at the top, and the shaft rod has a drilling blade that can be enlarged and contracted. This is an auger for drilling pile holes, which is characterized by having two stages, upper and lower.
また他の一つは、中央部に透孔を設け、上部に接続部を
設けた軸杆の外側壁に掘削刃を設けたオーガーにおいて
、前記軸杆の下部に拡大縮小できる掘削刃を設け、その
上部外壁に螺旋羽根を設置したことを特徴とする杭穴掘
削用オーガーである。Another one is an auger in which a drilling blade is provided on the outer wall of a shaft rod with a through hole in the center and a connection part in the upper part, and a drilling blade that can be expanded and contracted is provided in the lower part of the shaft rod, This auger for drilling pile holes is characterized by a spiral blade installed on its upper outer wall.
更に他の一つは、中央部に透孔を設け、上部に接続部を
設けた軸杆の外側壁に掘削刃を設けたオーガーにおいて
、前記軸杆の下部に拡大縮小できる掘削刃を設けたこと
を特徴とする杭穴掘削用オーガーである。Still another one is an auger in which a drilling blade is provided on the outer wall of a shaft rod that has a through hole in the center and a connecting portion at the top, and a drilling blade that can be expanded and contracted is provided at the bottom of the shaft rod. This is an auger for drilling pile holes.
また、掘削刃は、中央部に固定刃片を突設すると共に、
二本の腕杆の基部を横軸により軸杆へ回転自在に取付け
、前記腕杆の先端に刃片を設け、前記腕杆は、前記刃片
が掘削最大径外周になる位置を拡大限とし、刃片がオー
ガー固定部の最大径内に入り、腕杆が外傾斜する位置を
縮小限としたものである。また、腕杆の基部は、腕杆取
付部のストッパーとなる軸杆の凹人壁には、軸杆中央に
穿設した穿孔と連通ずるノズルを開口したものである。In addition, the excavation blade has a fixed blade protruding from the center, and
The bases of two arm rods are rotatably attached to the shaft rod by horizontal shafts, and a blade piece is provided at the tip of the arm rod, and the arm rod has an expansion limit at a position where the blade piece becomes the outer circumference of the maximum excavation diameter. The reduction limit is defined as the position where the blade piece enters the maximum diameter of the auger fixing part and the arm rod is inclined outward. Further, in the base of the arm rod, a nozzle is opened in the concave wall of the shaft serving as a stopper of the arm rod mounting portion, and communicates with a hole bored in the center of the shaft.
前記のようにすれば、自重によって縮小しない場合には
、腕杆外端上に外力が掛って縮小を助け、腕取付部に土
等が詰った場合にはノズルから加圧空気を吹き出して、
当該土等を吹き飛ばし、腕杆の拡大に支障を生じないよ
うにしてある。By doing the above, if it does not shrink due to its own weight, an external force is applied to the outer end of the arm rod to help it shrink, and if the arm attachment part is clogged with soil, pressurized air is blown out from the nozzle,
The soil, etc. is blown away so that it does not interfere with the expansion of the armrest.
(作 用)
この発明は、軸杆の外側へ上下二拡大縮小の掘削刃を設
置したので、抗穴の拡頭部は上下等径に掘削することが
できる。(Function) In this invention, since a drilling blade that can be enlarged and reduced in two directions upward and downward is installed on the outside of the shaft rod, the enlarged head of the hole can be excavated to have equal diameters in the upper and lower sides.
また、腕杆は軸杆の下部に横軸を介して回転自在に取付
けたので、軸杆を持ち上げれば、掘削刃の自重により縮
小し、掘削刃を抗大底に押しつければ、拡大限まで拡大
できる。In addition, the arm rod is rotatably attached to the lower part of the shaft rod via the horizontal shaft, so if you lift the shaft rod, it will shrink due to the weight of the digging blade, and if you press the digging blade against the bottom of the shaft, it will expand to its limit. It can be expanded to
また、ノズルから加圧空気等を吹き出せば土、又は砂利
等が詰っても、これを吹き飛ばして腕杆の回転に支障な
いからしめることができる。Furthermore, by blowing out pressurized air or the like from the nozzle, even if dirt or gravel becomes clogged, it can be blown away and the rotation of the arm rod will not be hindered.
(実施例)
この発明の実施例を添付図面について説明すれば、次の
通りである。(Example) An example of the present invention will be described below with reference to the accompanying drawings.
軸杆1の中央部に透孔2を穿設し、軸杆1の上部外側に
は接続部3を設け、軸杆1の中間部と下端部に拡大縮小
可能な上下部掘削刃4、5を上下二段に設ける。上部掘
削刃4は、軸杆1の外壁へ突設したブラケット6、6a
に、腕杆7、7aの基端を縦軸8、8aにより回転自在
に取付け、腕杆7、7aの先端に、刃片9、9aを固定
したもので、前記ブラケット6、6aは、ほほ直径対称
的に設けられているので、上部堀削刃4が拡大すれば、
ほぼ直径的に拡がる。次に、下部掘削刃5は軸杆1の下
部中央部に、固定刃片11a,1lb,llc,lid
が、半径方向へ一組宛距離を変えてて下向に突設される
と共に、腕杆12、12aの基部が横軸13により回転
自在に取付けられ、腕杆12、12aの先端へ下向に刃
片14、14aが設けられている。前記腕杆12、12
aの基部は、軸杆1の凹部15に嵌め込まれており、凹
部15の壁15a,15bは腕杆12、12aの上方又
は下方の回転制限用のストッパー10となっている(例
えば腕杆12、12aの拡大時に刃片14、14aがほ
ぼ垂直に保たれるように開度を制限している)。前記凹
部15に、加圧空気吹出用のノズル18、18aが開口
している。A through hole 2 is bored in the center of the shaft 1, a connecting part 3 is provided on the outside of the upper part of the shaft 1, and upper and lower excavating blades 4, 5 are provided at the middle and lower ends of the shaft 1, which can be expanded and contracted. are installed in two levels, upper and lower. The upper digging blade 4 has brackets 6, 6a protruding from the outer wall of the shaft rod 1.
The base ends of arm rods 7, 7a are rotatably attached to vertical shafts 8, 8a, and blade pieces 9, 9a are fixed to the tips of arm rods 7, 7a. Since it is provided diametrically symmetrically, if the upper drilling blade 4 is expanded,
Expands approximately diametrically. Next, the lower excavating blade 5 is attached to the fixed blade pieces 11a, 1lb, llc, lid at the lower central part of the shaft rod 1.
are protruded downward at different distances from each other in the radial direction, and the bases of the arm rods 12, 12a are rotatably attached to the horizontal shaft 13, and the bases of the arm rods 12, 12a are attached downwardly to the tips of the arm rods 12, 12a. Blade pieces 14, 14a are provided at the. The arm rods 12, 12
The base of a is fitted into a recess 15 of the shaft 1, and the walls 15a, 15b of the recess 15 serve as a stopper 10 for restricting the upper or lower rotation of the arm 12, 12a (for example, the arm 12 , 12a are expanded so that the blade pieces 14, 14a are kept substantially vertical (the opening degree is limited). Nozzles 18 and 18a for blowing out pressurized air are opened in the recess 15.
前記上部掘削刃4と、下部掘削刃5との間の輔杆1aに
、螺旋羽根17が周繞設置されている。A spiral blade 17 is installed around the rod 1a between the upper excavation blade 4 and the lower excavation blade 5.
前記実施例において、例えばオーガーロツド16を正回
転して上部掘削刃4が縮小する構造ならば、オーガーロ
ッド16の正回転により下部掘削刃5の拡大径に抗穴1
9を掘削して所定の深さgに達する。次にオーガーロッ
ド16を逆回転して拡底部20を掘削する。前記におけ
る下部掘削刃5により杭穴底21をほぼ平面状に掘削す
ることができる。In the above embodiment, for example, if the structure is such that the upper excavation blade 4 is contracted by forward rotation of the auger rod 16, the anti-hole 1 is formed in the enlarged diameter of the lower excavation blade 5 by the forward rotation of the auger rod 16.
9 to reach a predetermined depth g. Next, the auger rod 16 is rotated in the opposite direction to excavate the expanded bottom portion 20. The pile hole bottom 21 can be excavated into a substantially planar shape using the lower excavation blade 5 described above.
また、中空杭を沈降させ乍ら掘削する方式(例えば中掘
工法)においては、この実施例のように拡底部を掘って
も、中空杭の中央孔からオーガーを抜き取ることができ
る。In addition, in a method in which the hollow pile is excavated while being lowered (for example, a hollow excavation method), the auger can be extracted from the central hole of the hollow pile even if the expanded bottom portion is dug as in this embodiment.
(発明の効果)
この発明によれば、軸杆の下、又は上下に拡大縮小でき
る掘削刃を設置したので、抗底の平面掘削を可能にする
と共に、拡底部の掘削も容易にで4.
きる効果がある。また、下部掘削刃は加圧により拡大す
るので、その最大径を常時保つことができる効果がある
。(Effects of the Invention) According to the present invention, the excavation blade that can be enlarged and reduced under the shaft rod or above and below is installed, so that it is possible to excavate the bottom of the shaft on a flat surface, and also to excavate the enlarged bottom part easily.4. It has the effect of Furthermore, since the lower digging blade expands under pressure, it has the effect of being able to maintain its maximum diameter at all times.
また、軸杆の中央孔と、下部掘削刃の腕杆取付基部のノ
ズルとを連通したので、腕杆の取付凹部へ土が詰っても
容易に取除くことができる効果もある。Furthermore, since the center hole of the shaft is communicated with the nozzle at the arm rod attachment base of the lower excavation blade, even if the attachment recess of the arm rod is clogged with soil, it can be easily removed.
第1図はこの発明の実施例の掘削刃を拡大した正面図、
第2図は同じく縮小した正面図、第3図は同じく縮小状
態の側面図、第4図は同じく使用状態における断面図で
ある。
1・・・軸杆 4、5・・・上下部掘削刃7
、7a・・・腕杆 8、8a・・・縦軸9、9a・
・・刃片 10、10a・・・ストッパー11a,
llb.llc,lld・・・固定刃片12、12a・
・・腕杆 13・・・横軸14、14a・・・刃片 1
7・・・螺旋羽根18、18a・・・ノズル
第1図
弔
2
図
第3図
第4図FIG. 1 is an enlarged front view of a digging blade according to an embodiment of the present invention;
FIG. 2 is a front view in a similarly reduced size, FIG. 3 is a side view in a reduced size, and FIG. 4 is a sectional view in a used state. 1... Axis rod 4, 5... Upper and lower digging blades 7
, 7a... Arm rod 8, 8a... Vertical axis 9, 9a.
...Blade piece 10, 10a...Stopper 11a,
llb. llc, lld...Fixed blade pieces 12, 12a.
...Arm rod 13...Horizontal shaft 14, 14a...Blade piece 1
7... Spiral blades 18, 18a... Nozzle Figure 1 Funeral 2 Figure 3 Figure 4
Claims (1)
外側壁に掘削刃を設けたオーガーにおいて、前記軸杆の
下部に拡大縮小できる掘削刃を設けたことを特徴とする
杭穴掘削用オーガー 2 中央部に透孔を穿設し、上部に接続部を設けた軸杆
の外側壁に、掘削刃を設けたオーガーにおいて、前記軸
杆には拡大縮小できる掘削刃を上下二段に設けたことを
特徴とする杭穴掘削用オーガー 3 中央部に透孔を設け、上部に接続部を設けた軸杆の
外側壁に掘削刃を設けたオーガーにおいて、前記軸杆の
下部に拡大縮小できる掘削刃を設け、その上部外壁に螺
旋羽根を設置したことを特徴とする杭穴掘削用オーガー 4 掘削刃は、中央部に固定刃片を突設すると共に、二
本の腕杆の基部を横軸により軸杆へ回転自在に取付け、
前記腕杆の先端に刃片を設け、前記腕杆は、前記刃片が
掘削最大径外周になる位置を拡大限とし、刃片がオーガ
ー固定部の最大径内に入り、腕杆が外傾斜する位置を縮
小限とした請求項2記載の杭穴掘削用オーガー 5 腕杆取付部のストッパーとなる軸杆の凹入壁には、
軸杆中央に穿設した穿孔と連通するノズルを開口した請
求項4記載の杭穴掘削用オーガー[Scope of Claims] 1. In an auger in which a drilling blade is provided on the outer wall of a shaft rod having a through hole in the center and a connecting portion at the top, a drilling blade that can be enlarged and contracted is provided at the bottom of the shaft rod. Auger 2 for drilling pile holes, characterized in that an auger is provided with a drilling blade on the outer wall of a shaft rod with a through hole bored in the center and a connection part provided on the upper part, the shaft rod has an enlargement/reduction function. Auger for pile hole excavation 3 characterized by having digging blades arranged in two stages, upper and lower Auger 4 for pile hole drilling, characterized in that a digging blade that can be expanded and contracted is provided at the lower part of the shaft rod, and a spiral blade is installed on the upper outer wall of the auger. The bases of the two arm rods are rotatably attached to the shaft rod by the horizontal shaft,
A blade piece is provided at the tip of the arm rod. 3. The auger for pile hole drilling according to claim 2, wherein the reduction limit is the position where the shaft is attached.
The auger for digging a pile hole according to claim 4, wherein the auger has a nozzle that communicates with a hole drilled in the center of the shaft rod.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1188077A JPH0758030B2 (en) | 1989-07-20 | 1989-07-20 | Auger for drilling pile holes |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1188077A JPH0758030B2 (en) | 1989-07-20 | 1989-07-20 | Auger for drilling pile holes |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH0355387A true JPH0355387A (en) | 1991-03-11 |
JPH0758030B2 JPH0758030B2 (en) | 1995-06-21 |
Family
ID=16217302
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1188077A Expired - Lifetime JPH0758030B2 (en) | 1989-07-20 | 1989-07-20 | Auger for drilling pile holes |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0758030B2 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3007755U (en) * | 1994-03-14 | 1995-02-28 | 近畿コンクリート工業株式会社 | Magnifying head |
JP2000356086A (en) * | 1999-04-13 | 2000-12-26 | Mitani Sekisan Co Ltd | Drill head and method for drilling pile hole |
JP2010150761A (en) * | 2008-12-24 | 2010-07-08 | Mitani Sekisan Co Ltd | Pile hole excavating method and pile hole excavating head |
CN102381768A (en) * | 2011-07-26 | 2012-03-21 | 泉州师范学院 | Method for purifying mariculture wastewater by utilizing compound microbial inoculant |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5174403A (en) * | 1974-12-24 | 1976-06-28 | Giken Koei Kk | KISOGEIKATANKAKUDAIKUTSUSAKUSOCHI |
JPS563429U (en) * | 1979-06-22 | 1981-01-13 | ||
JPS5637031U (en) * | 1979-08-30 | 1981-04-09 | ||
JPS5779691U (en) * | 1980-10-30 | 1982-05-17 |
-
1989
- 1989-07-20 JP JP1188077A patent/JPH0758030B2/en not_active Expired - Lifetime
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5174403A (en) * | 1974-12-24 | 1976-06-28 | Giken Koei Kk | KISOGEIKATANKAKUDAIKUTSUSAKUSOCHI |
JPS563429U (en) * | 1979-06-22 | 1981-01-13 | ||
JPS5637031U (en) * | 1979-08-30 | 1981-04-09 | ||
JPS5779691U (en) * | 1980-10-30 | 1982-05-17 |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3007755U (en) * | 1994-03-14 | 1995-02-28 | 近畿コンクリート工業株式会社 | Magnifying head |
JP2000356086A (en) * | 1999-04-13 | 2000-12-26 | Mitani Sekisan Co Ltd | Drill head and method for drilling pile hole |
JP2010150761A (en) * | 2008-12-24 | 2010-07-08 | Mitani Sekisan Co Ltd | Pile hole excavating method and pile hole excavating head |
CN102381768A (en) * | 2011-07-26 | 2012-03-21 | 泉州师范学院 | Method for purifying mariculture wastewater by utilizing compound microbial inoculant |
Also Published As
Publication number | Publication date |
---|---|
JPH0758030B2 (en) | 1995-06-21 |
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