JPH02236389A - Drilling rod push device for kelly-bar type drilling machine - Google Patents
Drilling rod push device for kelly-bar type drilling machineInfo
- Publication number
- JPH02236389A JPH02236389A JP5494189A JP5494189A JPH02236389A JP H02236389 A JPH02236389 A JP H02236389A JP 5494189 A JP5494189 A JP 5494189A JP 5494189 A JP5494189 A JP 5494189A JP H02236389 A JPH02236389 A JP H02236389A
- Authority
- JP
- Japan
- Prior art keywords
- chuck
- drilling rod
- drilling
- cylinder
- pushing
- 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
- 238000005553 drilling Methods 0.000 title claims abstract description 52
- 238000000034 method Methods 0.000 abstract 3
- 238000009412 basement excavation Methods 0.000 description 18
- 238000002360 preparation method Methods 0.000 description 9
- 239000000969 carrier Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 238000010009 beating Methods 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 210000000078 claw Anatomy 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002093 peripheral effect Effects 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）
本発明は、ケリーバー型掘削機において掘削ロッドをチ
ャックで把持しつつ押込みシリンダにより地中にａ進さ
せる掘削ロッド押込み装置に関する。DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a drilling rod pushing device for a Kelly bar type excavator, in which the drilling rod is gripped by a chuck and advanced into the ground by a pushing cylinder.
（従来の技術）
従来、この種の掘削ロッド押込み装置として，蚤直に起
立する短いリーダーマストの下部に、掘削ロッドを回転
させるべき回転旺動部及び下部チャックを固定し、マス
１・上部には上部チャックを昇降自在に支持させると共
に該上部チャックを昇降させる押込みシリンダを設け、
掘進においては，下部チャックを開き、上部チャックを
閉じ（掘削ロッド把持）、該上部チャックを押込みシリ
ンダにより降下させてその１ストローク分だけ掘削ロッ
ドを掘進させ（１ストローク掘進），ついで下部チャッ
クを閉じ（掘削ロッド把持）、上部チャックを開き，該
上部チャックを押込みシリンダにより元位置に上昇させ
（掘進準備），次に下部チャックを開き，上部チャック
を閉じて上記と同様に押込みシリンダにより掘削ロッド
を掘進させ（１ストローク掘削）、以下同様に掘進を間
欠的に行うものが一般に知られている。(Prior art) Conventionally, as this type of drilling rod pushing device, a rotating part and a lower chuck for rotating the drilling rod are fixed to the lower part of a short leader mast that stands vertically, and a lower chuck is fixed to the upper part of mass 1. is provided with a push cylinder that supports the upper chuck so that it can be raised and lowered and also raises and lowers the upper chuck,
During excavation, the lower chuck is opened, the upper chuck is closed (drilling rod gripping), the upper chuck is lowered by a pushing cylinder, the drilling rod is excavated by one stroke (1 stroke excavation), and then the lower chuck is closed. (gripping the drilling rod), open the upper chuck, raise the upper chuck to the original position with the push cylinder (prepare for digging), then open the lower chuck, close the upper chuck, and hold the drilling rod with the push cylinder in the same way as above. It is generally known to perform excavation (one-stroke excavation) and then intermittent excavation in the same manner.
（発明が解決しようとする課題）
しかし、この従来装置では、掘進が間欠的に行われるた
め掘削速度が遅い欠点があり、それを補うため、スクロ
ークの長い押込みシリンダを用いて１回分の掘進長を大
きくする対策が採られているが、リーダーマストが長く
なり、装置全体の大型化、重量化を招く結果となってい
る．本発明は，掘削速度の向上及び装置の小型、軽量化
を課題とする．
（課題を解決するための手段）
上記課題を解決するため、本発明は、
回転能動装置から回転を伝達される掘削ロッドを、垂直
に起立された短いマストと平行に上下移動自在に支持し
たケリーバー型掘削機において、上記マストに，上記掘
削ロッドを開閉自在に把持すべき第１チャック及び第２
チャックを互に上下位置関係においてそれぞれ昇降自在
に且つ上記掘削ロッドと共に回転可能に支持し、
上記第１チャックを昇降駆動させる第１押込みシリンダ
及び上記第２チャックを昇降駆動させる第２押込みシリ
ンダをそれぞれ装偏した、構成を採った。(Problem to be solved by the invention) However, this conventional device has the disadvantage of slow digging speed because digging is performed intermittently. Measures have been taken to increase the size of the leader mast, but this increases the length of the leader mast, resulting in an increase in the size and weight of the entire device. The present invention aims to improve excavation speed and reduce the size and weight of equipment. (Means for Solving the Problems) In order to solve the above problems, the present invention provides a kelly bar that supports a drilling rod to which rotation is transmitted from a rotary active device so as to be movable up and down parallel to a vertically erected short mast. In the type excavator, the mast is provided with a first chuck and a second chuck, which are to hold the drilling rod so as to be openable and closable.
A first pushing cylinder that drives the first chuck up and down, and a second pushing cylinder that drives the second chuck up and down, each supporting the chucks in a vertical positional relationship such that they can move up and down and rotatably together with the drilling rod, respectively. I adopted a biased structure.
上記のような構成の本発明においては，一例としてまず
、第１チャックを閉じ、第２チャックを開いて第１押込
みシリンダにより掘削ロッドの第１次掘進を開始し、そ
の間に第２押込みシリンダを押込み準備位置に上昇させ
ておき．次に上記第１次掘進が完了したら直ちに第１チ
ャックを開き、第２チャックを閉じて第２押込みシリン
ダにより掘削ロッドの第２次堀進を開始し、その間に第
１押込みシリンダを押込み準備位置に上昇させておき，
次に上記第２次堀進が完了したら直ちに再び第１押込み
シリンダーによる第１次掘進を開始し、以下同様に第１
次掘進と第２次掘進とを連続的に繰返して掘削を遂行す
るのである。In the present invention configured as described above, as an example, first, the first chuck is closed, the second chuck is opened, and the first pushing cylinder starts the primary digging of the drilling rod, and during that time, the second pushing cylinder is opened. Raise it to the push-in preparation position. Next, as soon as the first digging is completed, the first chuck is opened, the second chuck is closed, and the second pushing cylinder starts the second digging of the drilling rod. During this time, the first pushing cylinder is pushed to the ready position. Let it rise to
Next, as soon as the above-mentioned second digging is completed, the first digging by the first pushing cylinder is started again, and the same goes for the first digging.
Excavation is accomplished by continuously repeating the next excavation and the second excavation.
本発明における掘削ロッドには、角ロッドの下端部にス
クリュー羽根、撹拌ブレード等を取付けたもの、角ロッ
ドの下端にドリルパケットを取付けたもの，その他各種
のものを含む。The drilling rod according to the present invention includes a rectangular rod with a screw blade, a stirring blade, etc. attached to the lower end, a rectangular rod with a drill packet attached to the lower end, and various other types.
以下図面を参照して本発明の実施例について説明する。Embodiments of the present invention will be described below with reference to the drawings.
（実施例）
第１図において、ベースマシン（１）の前端部に短いリ
ーダーマスト（２）を垂直に支持させ、該マスト（２）
の前面がわに長手力向全長にわたって敷設されたガイド
レール（３）、（３）に，上部及び下部キャリャ（４）
．（５）を互に上下位置関係においてそれぞれスライド
金具（６）．（７）を介して上下慴動自在に支持させ、
両キャリャ（４）、（５）に、下端部に撹拌ブレード（
９）・・・を有する角ロッドからなる掘削ロッド（８）
を上下移動自在に保持させると共に，該掘削ロッド（８
）に回転を伝達する回転恥動装置及び掘削ロッド押込み
装置を装備してある。 まず、回転駆動装置について説
明する．第３図において、上記下部キャリャ（５）に、
縦長のモータハウジング（１０）及びその上に適宜前方
へ張出す横長のギヤボックス（１１）を取付け、該ハウ
ジング（１０）内にモータ（１２）及び減速機（１３）
を設置すると共に、その出力軸（１４）を上記ギヤボッ
クス（１ｌ）がわに突出し、一方上記ギヤボックス（１
１）の前方張出し部内に、軸心に角孔（ｌ６）を有する
掘削ロッド保持筒（１５）を垂直に向けて回転自在に支
承すると共に、該保持筒（ｌ５）の両端部をギヤボック
ス（１１）の上下両面から突出させ、この保持筒（１５
）の外周面に固着した歯車（ｌ７）に、上記出力軸（１
４）から歯車列（１８）、（１９）を介して回転を伝え
るようにしてある．
上記上部キャリャ（４）には、第３図示のように上記保
持筒（ｌ５）の上方位置に軸受ボックス（２０）を取付
け，該ボックス（２０）に、上記保持筒（ｌ５）と同じ
く軸心に角孔（２１’）を有する掘削ロッド保持笥（２
１）を回転自在に支承させてあり，この保持筒（２１）
及び上記保持筒（１５）の各角孔（２２）． （１６）
に掘削ロッド（８）を挿通して垂直に保持している。(Example) In FIG. 1, a short leader mast (2) is vertically supported at the front end of the base machine (1), and the mast (2)
The upper and lower carriers (4) are placed on the guide rails (3), (3) laid over the entire length of the front side in the longitudinal direction.
．． (5) and slide fittings (6) respectively in vertical positional relationship. (7) to support it so that it can move up and down,
Both carriers (4) and (5) have stirring blades (
9) Drilling rod (8) consisting of a square rod having...
The drilling rod (8
) is equipped with a rotary motion device and a drilling rod pushing device to transmit rotation. First, the rotary drive device will be explained. In FIG. 3, in the lower carrier (5),
A vertically long motor housing (10) and a horizontally long gearbox (11) that protrudes forward appropriately are installed on the motor housing (10), and a motor (12) and a speed reducer (13) are mounted inside the housing (10).
is installed, and its output shaft (14) is protruded to the side of the gear box (1l), while the gear box (1l) is
1), a drilling rod holding cylinder (15) having a square hole (l6) in its axis is rotatably supported vertically, and both ends of the holding cylinder (l5) are connected to a gear box (1). This holding cylinder (15) protrudes from both upper and lower surfaces of the holding cylinder (15).
) is attached to the gear (l7) fixed to the outer peripheral surface of the output shaft (1).
Rotation is transmitted from 4) through gear trains (18) and (19). A bearing box (20) is attached to the upper carrier (4) at a position above the holding cylinder (l5) as shown in the third diagram, and the bearing box (20) is attached to the bearing box (20) in the same way as the holding cylinder (l5). A drilling rod holding tray (2) with a square hole (21') in the
1) is rotatably supported, and this holding cylinder (21)
and each square hole (22) of the holding cylinder (15). (16)
A drilling rod (8) is inserted into the hole and held vertically.
次に、掘削ロッド押込み装置は、第１、第２チャック及
び第１，第２押込み油圧シリンダからなり、第１チャッ
ク（２２）は、第４図示のように上記掘削ロツド保持筒
（２１）の軸受ボックス（２０）の左右外側面にブラケ
ット（２３）、（２３）を突設し、該ブラケットにチャ
ック開閉用油圧シリンダ（２４）、（２４）を各一端部
で連結してラム（２５）． （２５）を垂下し、両ラム
（２５）、（２５）の下端に円筒状のチャックケース（
２６）をブラケット（３３）． （３３）を介して連結
支持し，該ケース（２６）の内側に，軸心に角孔を有し
且つ該角孔の相対する内側面に一対の傾斜カム面（２８
）、（２８）を有するカムｆｌ（２７）をベアリング（
２９） ，（３０）を介して回転自在に支持させ、この
カム筒（２７）内に掘削ロッド（８）を挿通させてあり
、一方，上記掘削ロッド保持筒（２１）の突出下端にお
ける直径方向の相対する位置にブラケット（３１）、（
３１）を突設し、両ブラケット（３１）、（３１）に一
端部を揺動自在に連結された一対のチャック爪（３２）
． （３２）を上記カム筒（２７）のカム面（２８）．
（２８）と掘削ロッド（８）との間に位置させている
． （３４）はチャックケース（２Ｇ）のマストがわ外
側面に突設した断面Ｔ形のスライド板で、上部キャリャ
（４）に固定されたＴ形溝を有するガイド板（３５）に
上下摺動自在に係合してある６
第２チャック（１２２）は第１チャック（２２）と実質
的に同一の構造のもので、上記ギヤボックス（１１）の
下に上記と実質的に同一のＭＩＪａで取付けられている
。図面中，第１チャック（２２）と対応する各部を百単
位の符号で示した。なお、ガイド板（１３５）はモータ
ハウジング（１０）に固定されている。Next, the drilling rod pushing device consists of first and second chucks and first and second pushing hydraulic cylinders, and the first chuck (22) is connected to the drilling rod holding cylinder (21) as shown in the fourth figure. Brackets (23), (23) are provided protruding from the left and right outer surfaces of the bearing box (20), and hydraulic cylinders (24), (24) for opening and closing the chuck are connected to the brackets at one end of each to form a ram (25). ．． (25) hangs down, and a cylindrical chuck case (
26) to the bracket (33). The case (26) has a square hole at its axis and a pair of inclined cam surfaces (28) on the opposing inner surfaces of the square hole.
), (28) with a cam fl (27) bearing (
29) , (30), and the drilling rod (8) is inserted into this cam cylinder (27), while the diametrical direction at the protruding lower end of the drilling rod holding cylinder (21) Brackets (31), (
31), and a pair of chuck claws (32), one end of which is swingably connected to both brackets (31), (31).
．． (32) is the cam surface (28) of the cam cylinder (27).
(28) and the drilling rod (8). (34) is a slide plate with a T-shaped cross section that protrudes from the outer side of the mast of the chuck case (2G), and slides up and down on a guide plate (35) with a T-shaped groove fixed to the upper carrier (4). The second chuck (122), which is freely engaged, is of substantially the same structure as the first chuck (22), and has a MIJa substantially the same as the above described below the gear box (11). installed. In the drawings, parts corresponding to the first chuck (22) are indicated by hundreds. Note that the guide plate (135) is fixed to the motor housing (10).
第１押込み油圧シリンダ（３６）は、第１図示のように
上部キャリャ（４）の左右両側部に対をなして垂直に取
付け、そのラム（３７）を下方のギヤボックス（１１）
の左右側面にブラケットを介して連結し、又第２押込み
油圧シリンダ（１３６）は上記第１押込み油圧シリンダ
（３６）と同径もので，マスト（２）のトップアーム（
３８）の左右両側部に対をなしてその一端部を連結して
垂下し、そのラム（１３７）を下方のギヤボックス（ｌ
１）にブラケットを介して連結してある。The first push-in hydraulic cylinders (36) are vertically installed in pairs on both left and right sides of the upper carrier (4) as shown in the first diagram, and the rams (37) are connected to the lower gear box (11).
The second pushing hydraulic cylinder (136) has the same diameter as the first pushing hydraulic cylinder (36), and is connected to the left and right sides of the mast (2) via a bracket.
The ram (137) is connected to the left and right sides of the ram (137) and hangs down, and the ram (137) is attached to the lower gear box (l).
1) is connected via a bracket.
上例の作用を次に説明する。第２図（イ）に示すように
上部キャリャ（４）がマスト（２）の最上位に、下部キ
ャリャ（５）が最下位にそれぞれ位置する状態において
、モータ（１２）を始動すれば減速回転が出力軸（１４
）、歯車列（１８）、（１！））． （１７），保持筒
（ｌ５）を経て掘削ロッド（８）に伝達され、そこで第
１チャック（２２）においてチャック開閉用油圧シリン
ダ（２４）、（２４）の縮少酩動によりチャックケース
（２６）を上昇させ、それに伴いカム筒（２７）を上昇
させ、そのカム面（２８）、（２８）でチャック爪（３
２）、（３２）を掘削ロッド（８）に圧着させ（チャッ
ク開成）、第２チャック（１２２）は油圧シリンダ（１
２４）、（１２４）の伸長卵動によりチャックを開き，
ついで第１押込み油圧シリンダ（３６）を縮少邦動させ
ると同時に第２押込み油圧シリンダ（１３６）を第１押
込みシリンダ（３６）よりも遅い縮少速度（本例では１
／２の縮少速度）で縮少恥動させ、それにより上部キャ
リャ（４）及びそれに伴って第１チャック（２２）が回
転掘削ロッド（８）を把持しつつ降下すると同時に下部
キャリャ（５）及びそれに伴って第２チャック（１２２
）が上昇し、そして（口）図示のように上記掘削ロッド
（８）は，第１押込みシリンダ（３６）の縮少長から第
２押込みシリンダ（１３６）の縮少長を差し引いた長さ
分だけ降下掘進（第１次掘進）することとなり、又上記
第２チャック（１２２）は第２押込みシリンダ（１３６
）の縮少長分だけ上位の押込み準備位置に上昇すること
となる，
次に、上記第１及び第２押込みシリンダ（３６）、（１
３６）の縮少駆動が完了する同時に、第１チャック（２
２）においてチャック開閉用油圧シリンダ（２４）、（
２４）の伸長駆動によりチャックケース（２６）を降下
させ，それに伴いカム筒（２７）を降下させてチャック
爪（３２）、（３２）による掘削ロッド（８）の把持を
解除し（チャック開成）、第２チャック（１２２）はシ
リンダ（１２４）、（１２４）の縮少駆動によりチャッ
クを閉じて掘削ロッド（８）を把持し、ついで第１押込
みシリンダ（３６）を伸長叩動させると同時に、第２押
込みシリンダ（１３６） を第１押込みシリンダより遅
い伸長速度（本例では１／２の伸長速度）で伸長駆動さ
せ、それにより（ハ）図示のように上部キャリャ（４）
及び第１チャック（２２）が第１押込みシリンダ（３６
）の伸長長から第２押込みシリンダ（１３６）の伸長長
を差し引いた長さ分だけ上昇して（イ）図と同じ押込み
準備位置に戻ると同時に、下部キャリャ（５）及び第２
チャック（１２２）が回転掘削ロツド（８）を把持しつ
つ第２押込みシリンダ（１３６）の伸長分だけ降下して
第２次掘進を行う。以下上記第１次掘進と押込み準備，
及び第２次掘進と押込み準備を連続的に繰返すことによ
り掘削ロッド（８）を連続据進させる．
第５図の他の実施例は、第２押込みシリンダ（１３６ａ
）をマスト（２ａ）のボトムアーム（３９ａ）と上部キ
ャリャ（４ａ）の間に連結し，他の構造は第１、３，４
図と実質的に同一の例である。The operation of the above example will be explained next. As shown in Fig. 2 (a), when the upper carrier (4) is located at the top of the mast (2) and the lower carrier (5) is located at the bottom, if the motor (12) is started, the motor (12) will decelerate and rotate. is the output shaft (14
), gear train (18), (1!)). (17), is transmitted to the drilling rod (8) via the holding cylinder (l5), and there, in the first chuck (22), the chuck case (26) is ), the cam cylinder (27) is raised accordingly, and its cam surfaces (28), (28) are used to engage the chuck jaws (3).
2) and (32) to the drilling rod (8) (chuck opening), and the second chuck (122) is attached to the hydraulic cylinder (1).
24), the chuck is opened by the elongated egg motion of (124),
Next, the first pushing hydraulic cylinder (36) is retracted, and at the same time the second pushing hydraulic cylinder (136) is moved at a contraction speed lower than that of the first pushing cylinder (36) (in this example, 1
/2 reduction speed), whereby the upper carrier (4) and thereby the first chuck (22) descend while gripping the rotary drilling rod (8), and at the same time the lower carrier (5) and the second chuck (122
) rises, and as shown in the figure, the drilling rod (8) has a length equal to the reduced length of the first pushing cylinder (36) minus the reduced length of the second pushing cylinder (136). Then, the second chuck (122) is connected to the second pushing cylinder (136).
) will rise to the upper pushing preparation position by the reduced length of ( ). Next, the first and second pushing cylinders (36), (1
36) is completed, the first chuck (2
In 2), the hydraulic cylinder for opening and closing the chuck (24), (
The chuck case (26) is lowered by the extension drive of 24), and the cam cylinder (27) is lowered accordingly to release the grip of the drilling rod (8) by the chuck jaws (32), (32) (chuck opening). , the second chuck (122) closes the chuck and grips the drilling rod (8) by driving the cylinders (124) and (124) to contract, and then, at the same time, causes the first pushing cylinder (36) to extend and swing. The second push cylinder (136) is driven to extend at a slower extension speed than the first push cylinder (1/2 extension speed in this example), thereby (c) the upper carrier (4) is moved as shown in the figure.
and the first chuck (22) is connected to the first pushing cylinder (36
) rises by the length obtained by subtracting the extension length of the second pushing cylinder (136) and returns to the same pushing preparation position as shown in the figure (A).
The chuck (122) grips the rotary excavation rod (8) and descends by an amount corresponding to the extension of the second pushing cylinder (136) to perform the second excavation. The following is the first excavation and push-in preparation described above.
Then, the drilling rod (8) is continuously moved by repeating the secondary excavation and push-in preparation. Another embodiment of FIG. 5 includes a second push cylinder (136a
) is connected between the bottom arm (39a) of the mast (2a) and the upper carrier (4a), and the other structures are the first, third and fourth
This is an example substantially the same as in the figure.
第６図のさらに他の実施例は、第１押込みシリンダ（３
６ｂ）をマスト（２ｂ）のボトムアーム（３９ｂ）と上
部キャリャ（４ｂ）の間に、第２押込みシリンダ（１３
６ｂ）をトップアーム（３８ｂ）と下部キャリャ（５ｂ
）の間にそれぞれ連結し、他の構造は第１．３．４図と
実質的に同一とした例である．
（発明の効果）
本発明のケリーバー型掘削機に゛おける掘削ロッド押込
み装置によれば、第１チャックを閉じ，第２チャックを
開いて第１押込みシリンダの駆動により掘削ロッドを第
１欣掘進させると同時に第２押込みシリンダの駆動によ
り第２チャックを押込み準備位置に上昇させ，次に第１
チャックを開き，第２チャックを閉じて第２押込みシリ
ンダの駆動により掘削ロッドを第２次掘進させると同時
に第１押込みシリンダの叩動により第１チャックを押込
み準儲位置に上昇させ、この第１次据進と押込み準備及
び第２次掘進と押込み準備を連続的に繰返すことにより
連続掘進を行うことができ、掘削作業の能率向上を実現
することができるのであり、しかも上記のような連続掘
進はマスト及び押込みシリンダが短小であっても果せる
から、装置全体の小型化、軽量化も確実に行えるのであ
る。Still another embodiment of FIG.
6b) of the mast (2b) between the bottom arm (39b) and the upper carrier (4b), the second push cylinder (13
6b) to the top arm (38b) and lower carrier (5b).
), and the other structures are substantially the same as in Fig. 1.3.4. (Effects of the Invention) According to the drilling rod pushing device in the Kelly bar type excavator of the present invention, the first chuck is closed, the second chuck is opened, and the first pushing cylinder is driven to move the drilling rod into the first hole. At the same time, the second chuck is raised to the pushing preparation position by driving the second pushing cylinder, and then the first chuck is raised to the pushing preparation position.
The chuck is opened, the second chuck is closed, and the second pushing cylinder is driven to cause the drilling rod to make a second excavation.At the same time, the first chuck is pushed in by the beating of the first pushing cylinder and raised to a semi-excavation position. Continuous excavation can be performed by continuously repeating the next upsetting and push-in preparation, and the second excavation and push-in preparation, and it is possible to improve the efficiency of excavation work. This can be achieved even if the mast and pushing cylinder are short and small, so the entire device can be made smaller and lighter.
図面は本発明の実施例を示し、第１図はケリーバー型掘
削機の側面図、第２図（イ）、（口），（ハ）は掘削ロ
ッド押込み装置の押込み過程を示す各略線側面図、第３
図は第１図における押込み装置部分の一部切欠拡大図、
第４図は第３図のＩＶ−ＩＶ線断面図、第５図は実施例
の略線側面図、第６図はさらに他の実施例の略線側面図
である．
２、２ａ、２ｂ−・・リーダーマスト，８、８ａ，８ｂ
−掘削ロッド、２２、２２ａ． ２２ｂ−第１チャック
、３６． ３６ａ、３６ｂ・・・第１押込み油圧シリン
ダ、１２２、１２２ａ、１２２ｂ−・・第２チ’ｒック
、１３６、１３６ａ，１３６ｂ−第２押込み油圧シリン
ダ。
才」一二
±」Ｌ図
す］」旦The drawings show an embodiment of the present invention, and FIG. 1 is a side view of a Kelly bar type excavator, and FIGS. Figure, 3rd
The figure is a partially cutaway enlarged view of the pushing device part in Figure 1,
4 is a sectional view taken along the line IV--IV in FIG. 3, FIG. 5 is a schematic side view of the embodiment, and FIG. 6 is a schematic side view of another embodiment. 2, 2a, 2b--Leader mast, 8, 8a, 8b
- drilling rod, 22, 22a. 22b-first chuck, 36. 36a, 36b--first push hydraulic cylinder, 122, 122a, 122b--second chuck, 136, 136a, 136b--second push hydraulic cylinder. 12±"L figure]"dan
Claims (1)
に起立された短いマストと平行に上下移動自在に支持し
たケリーバー型掘削機において、 上記マストに、上記掘削ロッドを開閉自在に把持すべき
第１チャック及び第２チャックを互に上下位置関係にお
いてそれぞれ昇降自在に且つ上記掘削ロッドと共に回転
可能に支持し、上記第１チャックを昇降駆動させる第１
押込みシリンダ及び上記第２チャックを昇降駆動させる
第２押込みシリンダをそれぞれ装備した、ケリーバー型
掘削機の掘削ロッド押込み装置。[Claims] A Kelly bar type excavator in which a drilling rod to which rotation is transmitted from a rotary drive device is supported so as to be movable up and down in parallel with a short vertically erected mast, wherein the drilling rod is opened and closed by the mast. A first chuck that supports a first chuck and a second chuck that are to be freely gripped so as to be movable up and down and rotatable together with the drilling rod in a vertical positional relationship, and that drives the first chuck up and down.
A drilling rod pushing device for a Kelly bar type excavator, which is equipped with a pushing cylinder and a second pushing cylinder that drives the second chuck up and down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1054941A JP2796615B2 (en) | 1989-03-09 | 1989-03-09 | Drilling rod pushing device of kelly bar type excavator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1054941A JP2796615B2 (en) | 1989-03-09 | 1989-03-09 | Drilling rod pushing device of kelly bar type excavator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02236389A true JPH02236389A (en) | 1990-09-19 |
| JP2796615B2 JP2796615B2 (en) | 1998-09-10 |
Family
ID=12984667
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1054941A Expired - Fee Related JP2796615B2 (en) | 1989-03-09 | 1989-03-09 | Drilling rod pushing device of kelly bar type excavator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2796615B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03206289A (en) * | 1989-10-17 | 1991-09-09 | Nippon Kensetsu Kikai Shoji Kk | Automatic feed device for ground improving machine |
| JPH0953381A (en) * | 1995-08-10 | 1997-02-25 | Seiko Kogyo Kk | Method of drilling ground and device therefor |
| JP2011021359A (en) * | 2009-07-15 | 2011-02-03 | Geo Kizai:Kk | Rod holder device |
| KR20170114486A (en) * | 2016-04-05 | 2017-10-16 | (주)부마씨이 | Earth auger machine |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5310762A (en) * | 1977-04-21 | 1978-01-31 | Tadami Kk | Bonding of fiber material |
| JPS5624754A (en) * | 1979-08-03 | 1981-03-09 | Ushio Electric Inc | Incandescent bulb with iodine |
-
1989
- 1989-03-09 JP JP1054941A patent/JP2796615B2/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5310762A (en) * | 1977-04-21 | 1978-01-31 | Tadami Kk | Bonding of fiber material |
| JPS5624754A (en) * | 1979-08-03 | 1981-03-09 | Ushio Electric Inc | Incandescent bulb with iodine |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03206289A (en) * | 1989-10-17 | 1991-09-09 | Nippon Kensetsu Kikai Shoji Kk | Automatic feed device for ground improving machine |
| JPH0953381A (en) * | 1995-08-10 | 1997-02-25 | Seiko Kogyo Kk | Method of drilling ground and device therefor |
| JP2011021359A (en) * | 2009-07-15 | 2011-02-03 | Geo Kizai:Kk | Rod holder device |
| KR20170114486A (en) * | 2016-04-05 | 2017-10-16 | (주)부마씨이 | Earth auger machine |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2796615B2 (en) | 1998-09-10 |
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| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |