JPS59141686A - Drilling apparatus - Google Patents
Drilling apparatusInfo
- Publication number
- JPS59141686A JPS59141686A JP1526483A JP1526483A JPS59141686A JP S59141686 A JPS59141686 A JP S59141686A JP 1526483 A JP1526483 A JP 1526483A JP 1526483 A JP1526483 A JP 1526483A JP S59141686 A JPS59141686 A JP S59141686A
- Authority
- JP
- Japan
- Prior art keywords
- tube
- outer tube
- pipe
- inner tube
- air
- 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
- Earth Drilling (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】 (発明の対象・産業上の利用分野) 本発明は、基礎地盤を改良する分野で利用される。[Detailed description of the invention] (Subject of invention/field of industrial application) INDUSTRIAL APPLICABILITY The present invention is used in the field of improving foundation soil.
本発明は、地盤にコンクリート等の杭を造成するにあた
って孔を掘削するための装置に関し、特に地盤中に岩石
や前底が存在する場合の掘削に好適な掘削装置であって
、外周にスクリューを有し且つ複数の貫窓を配設した外
管とこの外管内に嵌挿してあって外周にスクリューを有
する中管とを、昇降機枠にそれぞれ回転自在に垂下連設
すると共に、中管内に内管を挿通してその下端部にエア
ハンマを装着してなる掘削装置に関する。The present invention relates to an apparatus for excavating a hole when constructing a pile of concrete or the like in the ground, and is particularly suitable for excavating when rocks or forebottoms are present in the ground. An outer tube having a plurality of through holes and a middle tube fitted into the outer tube and having a screw on the outer periphery are connected to each other so as to be rotatable in the elevator frame, and an inner tube is connected to the elevator frame so as to be rotatable. This invention relates to an excavation device that has a pipe inserted through it and an air hammer attached to the lower end of the pipe.
(従来技術)
地盤に孔を掘削するのに一般にアースオーガが使用され
てい−るが、従来のアースオーガはオーガスタリュー先
端のオーガヘッド以外に特別な破砕手段を備えていない
ため、地盤中に岩石や前底が存在している場合には、こ
めオーガスクリユーでは掘削が困難でありまた削孔作業
能率か大きく低下していた。(Prior art) Earth augers are generally used to drill holes in the ground, but conventional earth augers do not have any special crushing means other than the auger head at the tip of the auger screw, so When a hole or forebottom exists, it is difficult to excavate the hole using the auger screw, and the drilling efficiency is greatly reduced.
(発明の目的)
本発明は、上記に鑑みて地盤の削孔にあたり地盤中に岩
石、前底があってもそれらも容易に破砕しえて掘削作業
能率を向上させることができると共に、無騒音、無振動
で掘削作業を行うことのできる掘削装置を提供すること
を目的とする。(Object of the Invention) In view of the above, the present invention makes it possible to easily crush rocks and forebottoms in the ground when drilling a hole in the ground, thereby improving the efficiency of the excavation work, as well as being noiseless and An object of the present invention is to provide a drilling device that can perform excavation work without vibration.
(発明の構成)
上記の目的を達成するための本発明の掘削装置は、リー
ダに沿って昇降自在に吊支される昇降機枠に、外周にス
クリューを有し且つ複数の貫窓を所要箇所に配設した外
管及びこの外管内に嵌挿させてあって外周にスクリュー
を有する中管を、それぞれ回転自在に垂下連設すると共
に、中管内に、内部をエア供給路とする内管を挿通して
、中管下端から突出したその下端部にエアハン゛7を装
着し、上記昇降機枠内に外管及び中管を回転させる駆動
手段を配備し、上記内管の上端部にはエアハンマ作動用
エアの供給パイプを接続してなるものである。(Structure of the Invention) To achieve the above object, the excavation equipment of the present invention has an elevator frame that is suspended along a leader so as to be able to rise and fall freely, and has a screw on the outer periphery and a plurality of through holes at required locations. An outer tube and a middle tube fitted into the outer tube and having a screw on the outer periphery are connected to each other so as to be rotatable, and an inner tube whose inside is an air supply path is inserted into the middle tube. An air hammer 7 is attached to the lower end protruding from the lower end of the middle pipe, a driving means for rotating the outer pipe and the middle pipe is provided within the elevator frame, and an air hammer operating means is provided at the upper end of the inner pipe. It is connected to an air supply pipe.
実施例 次に本発明の一実施例を図面に基づいて説明する。Example Next, one embodiment of the present invention will be described based on the drawings.
第1図は掘削装置の全体図を示したもので、■はクロー
ラクレーン等に立設されたり−ダ(図示省略)に昇降自
在に吊支される昇降機枠で、この昇降機枠Iに、外周の
全長に亘ってスクリュー2を螺設した外管3と、この外
管3内に嵌挿してあって外周の全長に亘リスクリュー4
を螺設した中管5とがそれぞれ回転自在に垂下連設され
ており、そして中管5内には内部をエア供給路6aとす
る内管6が遊嵌状態で挿通され、この中管5下端から突
出した内管6の下端部にエアハンマ7が装着され、上記
昇降機枠1内には外管3を回転させる駆動装置8及び中
管5を回転させる駆動装置9が配備させていると共に、
内管6の上端部にはエアハンマ作動用エアの供給パイプ
10が接続配備されている。また」二記外管3にはその
全体に亘って複数の土砂、岩石破砕片等用貫窓11・・
・か適当間隔で配設しである。Figure 1 shows the overall view of the excavation equipment. An outer tube 3 with a screw 2 threaded over the entire length of the outer tube 3, and a screw 4 fitted into the outer tube 3 over the entire length of the outer periphery.
The inner tubes 5 are connected to each other so as to be rotatable, and an inner tube 6 having an air supply passage 6a inside is loosely inserted into the inner tube 5. An air hammer 7 is attached to the lower end of the inner tube 6 protruding from the lower end, and a drive device 8 for rotating the outer tube 3 and a drive device 9 for rotating the middle tube 5 are provided within the elevator frame 1.
An air supply pipe 10 for operating the air hammer is connected to the upper end of the inner tube 6. In addition, the outer pipe 3 has a plurality of through holes 11 for use with earth and sand, crushed rock pieces, etc. throughout the outer pipe 3.
- Arranged at appropriate intervals.
上記構造について更に詳しく説明すれば、外管回転駆動
装置8は8、昇降機枠1の下部に大ギヤ12を回転自在
に支承し、この大ギヤ12の下端を外管3の上端と同心
的且つ一体的に連結する一方、機枠1内において上記大
ギヤ12の両側対応位置に一対の減速機付電動機13.
13を設置し、これら電動機13.13の4jj力軸−
14,14に固定の小ギヤ15.15を大ギヤ12にそ
の両側対向位置で11〉合させてなるもので、両型動機
13.13の互いに同一方向への回転により小ギヤ15
,15 、大ギヤ12を介して外管3を回転させるよう
になっている。中管5は外管3の上端を越えて機枠1内
の中心部へ延びていて、咳中管5に固装されたフランジ
部材16と機枠1との間に介装された軸受17、更には
大王−1月2内に設けられた軸受18によって回転自在
に保持されている。そしてこの中管5を回転させる駆動
装置9は、中管5の上端所要部に大ギヤ19を固装する
と共に、機枠1内における該中管5の両側位置に一列の
減速機付電動機20.20を設置し、これら電動機20
.20の出力軸21.21に固定の小ギヤ22.22を
上記人ギヤ19にその両側対向位置で噛合させてなるも
ので、電動機20.20の互いに同一方向への回転によ
り小ギヤ22,22 、大ギヤ19を介して中管5を回
転させるようにしている。」1記内管6は第2図で示す
ようにその上端の径大頭部6bが機枠1に設けられた支
持枠23で保持されていると共に、この径大頭部24と
中管5の上端との間にリング状の弾性部材25あるいは
コイルスプリング等が介装しである。また内管6のエア
供給路6aの入口部とエア供給パイプ10とはコネクタ
ー26で接続されている。To explain the above structure in more detail, the outer tube rotation drive device 8 rotatably supports a large gear 12 at the lower part of the elevator frame 1, and the lower end of the large gear 12 is concentric with the upper end of the outer tube 3. While integrally connected, a pair of electric motors 13 with reduction gears are provided at positions corresponding to both sides of the large gear 12 within the machine frame 1.
13 are installed, and the 4jj power axis of these electric motors 13.13-
A small gear 15.15 fixed to 14, 14 is fitted to a large gear 12 at opposing positions on both sides, and the small gear 15
, 15, the outer tube 3 is rotated via the large gear 12. The inner tube 5 extends beyond the upper end of the outer tube 3 to the center of the machine frame 1, and a bearing 17 is interposed between the flange member 16 fixed to the inner tube 5 and the machine frame 1. Furthermore, it is rotatably held by a bearing 18 provided in the Daio-January 2. The drive device 9 for rotating the middle tube 5 has a large gear 19 fixed to the upper end of the middle tube 5, and a row of electric motors 20 with reducers arranged on both sides of the middle tube 5 in the machine frame 1. .20 is installed, and these electric motors 20
.. The small gears 22.22 fixed to the output shafts 21.21 of 20 are meshed with the man gear 19 at opposing positions on both sides, and the small gears 22, 22 are rotated by the rotation of the electric motors 20.20 in the same direction. , the middle tube 5 is rotated via a large gear 19. As shown in FIG. A ring-shaped elastic member 25 or a coil spring or the like is interposed between the upper end and the upper end. Further, the inlet portion of the air supply path 6a of the inner tube 6 and the air supply pipe 10 are connected by a connector 26.
エアハンマ7ば、第3図〜第6図に示すように、摺動室
27を有し内管6の下θ111に接続されたボディ28
と、圧力室29を有しボディ27の摺動室27内を往復
動するピストン30と、ピストン30先端に取着された
ヘッドプレート31とからなるもので、先ず内管6のエ
ア供給路6aからの圧力エアばボディ28の入口孔32
aより導入路32に導入されてそこから軸方向に延びる
複数の連通路33を経て環状の中間室34に入り、この
中間室34からの圧力エアば摺動室27とピストン30
との間の環状可変容積室35に入ると共にピストン30
に設けられた複数の連通孔36を通じて圧力室29に入
る。このとき環状可変容積室35側と圧力室29側との
受圧面積の差異によりその受圧面積の大なるビス)−ン
30が第3図に関して下方へ駆動され、そしてピストン
30の連通孔36がボディ28下端部側の環状出口側室
37に連通ずるに至ると、圧力室29内の圧力エアはこ
れら連通孔36、出口側室37からボディ28の軸方向
に延びる複数の排出路38を通ってボディ28上端面側
より大気に放出され、それにより圧力室29内のエア圧
が下がる一方、可変容積室35内の圧力エアによってピ
ストン30は上方へ押動され、以降上記同様の操作が高
速で反復されることによってピストン30は高速上下往
復動つまり上下強制振動を行うようになっている。尚、
ヘッドプレート31はねし39にてピストン30先端に
螺着され、このヘッドプレー1−31にはカッター40
が設けである。As shown in FIGS. 3 to 6, the air hammer 7 has a body 28 having a sliding chamber 27 and connected to the lower θ111 of the inner pipe 6.
It consists of a piston 30 having a pressure chamber 29 and reciprocating within the sliding chamber 27 of the body 27, and a head plate 31 attached to the tip of the piston 30. Pressure air from the inlet hole 32 of the body 28
A, the air is introduced into the introduction passage 32, passes through a plurality of communication passages 33 extending in the axial direction, and enters the annular intermediate chamber 34, and the pressurized air from this intermediate chamber 34 is introduced into the sliding chamber 27 and the piston 30.
The piston 30 enters the annular variable volume chamber 35 between the
It enters the pressure chamber 29 through a plurality of communication holes 36 provided in the pressure chamber 29 . At this time, due to the difference in pressure receiving area between the annular variable volume chamber 35 side and the pressure chamber 29 side, the screw cylinder 30 having a large pressure receiving area is driven downward with respect to FIG. When the pressure air in the pressure chamber 29 reaches the annular outlet side chamber 37 on the lower end side of the body 28 , the pressure air in the pressure chamber 29 passes through the plurality of exhaust passages 38 extending in the axial direction of the body 28 from the communication hole 36 and the outlet side chamber 37 to the body 28 . It is released into the atmosphere from the upper end surface side, thereby reducing the air pressure in the pressure chamber 29, while the piston 30 is pushed upward by the pressure air in the variable volume chamber 35, and the same operation as described above is repeated at high speed. This causes the piston 30 to perform high-speed vertical reciprocating motion, that is, vertical forced vibration. still,
The head plate 31 is screwed onto the tip of the piston 30 with a screw 39, and a cutter 40 is attached to the head plate 1-31.
is the provision.
上述したような構成を有する掘削装置の操作にあたって
は、本装置の昇降機枠1をリーグ(図示省略)頂部より
適当高さに(E吊支持した状態で、駆動装置8,9を作
動させて外管3はそのスクリュ−2の下向き送り方向(
掘進方向)に、また中管5は外管3とは逆方向に即ちス
クリュー4の上向き送り方向にそれぞれ回転させると共
に、エアハンマ7を作動させてヘッドプレート31を上
下強制振動させながら、昇降操作用ワイヤー(図示せず
)を繰り出してゆくと、先端部のエアハンマ7により地
盤中の岩石あるいは前底か破砕され、そして外管3によ
り掘削孔が形成されてゆく、このエアハンマ7によって
破砕された岩石等の破砕片及び土砂等は、外管3内で上
向き送り方向に回転している中管5のスクリュー4によ
り上方へ押し上げられながら外管3の貫窓11・・・よ
り適宜外管3の外に押し出し排出されて、該外管3にて
形成されている孔の壁面に圧接される。こうして削孔が
所要深さに達しまた外管3内の土砂、岩石等が排出され
た後、中管5の回転方向はそのまま上記の削孔時と同じ
にして、外管3を上記削孔時とは逆方向に即ちそのスク
リュー2の上向き送り方向(引き抜き方向)に回転させ
ながら、機枠1を上昇させつつ外管3ならびに中管5及
び内管6をその形成された孔より引き抜いてゆく。尚、
この引き抜き時にはエアハンマ7の作動を停止させる。When operating the excavation equipment having the above-mentioned configuration, the elevator frame 1 of this equipment is suspended from the top of the league (not shown) at an appropriate height (E), and the drive devices 8 and 9 are operated to remove it. The tube 3 is moved in the downward feeding direction of the screw 2 (
In addition, the inner tube 5 is rotated in the opposite direction to the outer tube 3, that is, in the upward feeding direction of the screw 4, and the air hammer 7 is operated to forcibly vibrate the head plate 31 up and down. As the wire (not shown) is fed out, the air hammer 7 at the tip crushes the rock in the ground or the forebottom, and the outer tube 3 forms an excavation hole.The air hammer 7 crushes the rock. The crushed pieces, earth and sand, etc. are pushed upward by the screw 4 of the middle pipe 5 rotating in the upward feeding direction within the outer pipe 3. It is pushed out and discharged, and is pressed against the wall surface of the hole formed in the outer tube 3. After the hole has reached the required depth and the earth, sand, rocks, etc. inside the outer tube 3 have been discharged, the direction of rotation of the inner tube 5 remains the same as when drilling the outer tube 3 as described above. While rotating the screw 2 in the upward feeding direction (pulling direction), the outer tube 3, the middle tube 5, and the inner tube 6 are pulled out from the holes formed while raising the machine frame 1. go. still,
At the time of this pulling out, the operation of the air hammer 7 is stopped.
またこの時中管50回転は止めてもよい。そして外管3
の引き抜きを終えた後、孔内に生コンクリートやモルタ
ル等が注入されて所謂場所tJち杭が造成される。ある
いはこの掘削孔に既成杭が埋設されることもある。Also, at this time, the 50 rotations of the inner tube may be stopped. and outer tube 3
After completing the extraction, ready-mixed concrete, mortar, etc. are poured into the hole to create the so-called piles at the location tJ. Alternatively, prefabricated piles may be buried in this excavated hole.
上述した実施例においては一外管の全長に亘ってスクリ
ューを設けたが、このスクリューは外管の少なくとも下
端部に設←ノればよい。また実施例では外管と中管とを
それぞれ別個の駆動装置で回転させるようにしけている
が、一台の駆動装置によって外管及び中管を適宜回転さ
せるようにしてもよい。In the above-described embodiment, the screw is provided along the entire length of the outer tube, but the screw may be provided at least at the lower end of the outer tube. Further, in the embodiment, the outer tube and the middle tube are rotated by separate drive devices, but the outer tube and the middle tube may be appropriately rotated by a single drive device.
(発明のすJ果)
本発明の掘削装置によれば、外管と中管と内管とを備え
ていて内管の下端部にエアハンマを装着しているので、
従来のアースオーガでは十分に破砕しえない地盤中の岩
石、前底等を容易に破砕、粉砕することができて、削孔
作業能率を大幅に向」ニさせることができる。また外管
及び中管にスクリューを有すると共に外管に貫窓を設け
ているので、削孔作業ならびに排土作業を効果良く行え
、特に排土にあたっては地盤中において外管内の土砂、
岩石等を貫窓より外管の外に押出して孔の内壁面に圧接
させることができるため、地上Q;おけ′る排土の処理
作業の負担が少なくなると共に、掘削孔の壁面の強化が
図られて孔の崩壊を防止することかできる。更に、本発
明装置でハ機粋には回転駆動手段のみを装備し、そして
エアハンマは内管の下端部に装着してその作業用圧力エ
アを内管を通じて供給するようにしているので、掘削作
業中に地上においてほとんど騒音及び振動を発生させる
おそれかない。(Results of the Invention) The excavation device of the present invention includes an outer pipe, a middle pipe, and an inner pipe, and an air hammer is attached to the lower end of the inner pipe.
It can easily crush and crush rocks in the ground, forebottoms, etc. that cannot be sufficiently crushed with conventional earth augers, greatly improving drilling efficiency. In addition, the outer and middle pipes have screws and a through-hole in the outer pipe, making it possible to perform hole drilling and earth removal work effectively.
Since rocks, etc. can be pushed out of the outer pipe through the through-hole and brought into pressure contact with the inner wall of the hole, the burden of disposal of soil removed from the ground is reduced, and the wall of the excavation hole is strengthened. This can be done to prevent collapse of the pores. Furthermore, the device of the present invention is advantageously equipped with only a rotary drive means, and the air hammer is attached to the lower end of the inner pipe so that the working pressure air is supplied through the inner pipe, so that the excavation work can be easily carried out. There is little risk of generating noise and vibration on the ground.
第1図は本発明掘削装置の実施例を示す一部縦断面正面
図、第2図は第1図のn −II線拡大断面図、第3図
はエアハンマの拡大断面図、第4図は第3図のIV −
IV線断面図、第5図は第3図のV−V線断面図、第6
図は第3図のVl−Vl線断面図である。
1・・・昇降機枠、2・・・スクリュー、3・・・外管
、4・・・スクリュー、5・・・中管、6・・・内管、
7・・・エアハンマ、8・・・外管回転駆動装置、9・
・・中管回転駆動装置、10・・・エア供給パイプ、1
1・・・貫窓。
第 1 図
第 2 捌
第3図
@4 図
第 5 図
□
3日 35Fig. 1 is a partially longitudinal sectional front view showing an embodiment of the drilling equipment of the present invention, Fig. 2 is an enlarged sectional view taken along the line n-II of Fig. 1, Fig. 3 is an enlarged sectional view of the air hammer, and Fig. 4 is an enlarged sectional view of the air hammer. IV- in Figure 3
5 is a sectional view taken along the line IV, and FIG. 5 is a sectional view taken along the line V-V in FIG.
The figure is a sectional view taken along the line Vl--Vl in FIG. 3. 1... Elevator frame, 2... Screw, 3... Outer pipe, 4... Screw, 5... Middle pipe, 6... Inner pipe,
7...Air hammer, 8...Outer tube rotation drive device, 9.
... Middle tube rotation drive device, 10 ... Air supply pipe, 1
1...through window. Figure 1 Figure 2 Figure 3 @ 4 Figure 5 Figure □ 3rd 35
Claims (1)
にスクリューを有し且つ複数の貫窓を所要箇所に配設し
た外管及びこの外管内に嵌挿させてあって外周にスクリ
ューを有す る中管を、それぞれ回転自在に垂下連設す
ると共に、中管内に、内部をエア供給路とする内管を挿
通して、中管下端から突出したその下端部にエアハンマ
を装着し、J二記昇降機枠内に外管及び中管を回転させ
る駆動手段を配備し、上記内管の上端部にはエアハンマ
作動用エアの供給、パイプを接続してなる掘削装置。An elevator frame that is suspended along a leader so that it can be raised and lowered is equipped with an outer tube that has screws on its outer periphery and a plurality of through holes arranged at required locations, and an outer tube that is fitted into the outer tube and has screws on its outer periphery. The inner tubes having the inner tubes are connected to each other so as to be rotatable, and an inner tube whose inside is an air supply path is inserted into the inner tube, and an air hammer is attached to the lower end portion of the inner tube that protrudes from the lower end of the inner tube. J.2 An excavation device comprising a driving means for rotating an outer tube and an inner tube within the elevator frame, and a pipe for supplying air for operating an air hammer connected to the upper end of the inner tube.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1526483A JPS59141686A (en) | 1983-01-31 | 1983-01-31 | Drilling apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1526483A JPS59141686A (en) | 1983-01-31 | 1983-01-31 | Drilling apparatus |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS59141686A true JPS59141686A (en) | 1984-08-14 |
JPS6311513B2 JPS6311513B2 (en) | 1988-03-14 |
Family
ID=11883994
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1526483A Granted JPS59141686A (en) | 1983-01-31 | 1983-01-31 | Drilling apparatus |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS59141686A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62169086U (en) * | 1986-04-10 | 1987-10-27 | ||
JP2017014869A (en) * | 2015-07-06 | 2017-01-19 | ジャパンホームシールド株式会社 | Auger screw and ground reinforcement method |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02109674U (en) * | 1989-02-15 | 1990-09-03 | ||
JPH02123276U (en) * | 1989-03-23 | 1990-10-09 | ||
JPH02123275U (en) * | 1989-03-23 | 1990-10-09 | ||
JPH0647314U (en) * | 1991-06-04 | 1994-06-28 | 有限会社ラフアンドロードスポーツ | Lower limb protector |
-
1983
- 1983-01-31 JP JP1526483A patent/JPS59141686A/en active Granted
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62169086U (en) * | 1986-04-10 | 1987-10-27 | ||
JP2017014869A (en) * | 2015-07-06 | 2017-01-19 | ジャパンホームシールド株式会社 | Auger screw and ground reinforcement method |
Also Published As
Publication number | Publication date |
---|---|
JPS6311513B2 (en) | 1988-03-14 |
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