JPS5915125A - Penetration of steel tube - Google Patents
Penetration of steel tubeInfo
- Publication number
- JPS5915125A JPS5915125A JP12470882A JP12470882A JPS5915125A JP S5915125 A JPS5915125 A JP S5915125A JP 12470882 A JP12470882 A JP 12470882A JP 12470882 A JP12470882 A JP 12470882A JP S5915125 A JPS5915125 A JP S5915125A
- Authority
- JP
- Japan
- Prior art keywords
- steel pipe
- inclination
- pipe body
- press
- steel tube
- 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
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D13/00—Accessories for placing or removing piles or bulkheads, e.g. noise attenuating chambers
- E02D13/06—Accessories for placing or removing piles or bulkheads, e.g. noise attenuating chambers for observation while placing
Abstract
Description
【発明の詳細な説明】
本発明は鋼管天板や鋼管杭等の鋼管体を土中Ｋ Ｊ、Ｅ
人するだめの鋼管体の圧入方法に関するものである。[Detailed description of the invention] The present invention provides a method for installing steel pipe bodies such as steel pipe top plates and steel pipe piles into the soil.
The present invention relates to a method of press-fitting a steel pipe body for a human sink.
ψ［年、建設土木工事における振動や騒音等の公害問題
により、鋼管体の打設もヂイーセルノ＼、′Ｊマーなど
を用いることに代えて、無振動無騒音で施工することが
試みられており、そしてこの場合には鋼管体を打ち込む
のではなく圧入することで打設を行な′っている。とこ
ろで、このような圧入機によって鋼管体を土中に圧入す
る場合、オー力等を併用して圧入するわけであるが、圧
入機における圧入力に限度があるために、鋼管体の杭芯
及び鉛直精度を精密に管理しなくては、鋼管体がいった
ん頌〈とこれを修正で閣なくなるおそれを圧入機は有し
ている。このような傾きは鋼管矢板を連続させて輪状に
打設して井筒（ウェル）とする場合、最終の閉合杭の施
工が困難となって輪状に閉じなくなってしまう事態を招
き、−！！た鋼管体を上下に継いで打設する場合には鉛
直精度を特に高くしなくてはならない。ψ [In 2013, due to pollution problems such as vibration and noise in construction and civil engineering work, attempts were made to install steel pipe bodies without vibration or noise, instead of using J-SELNO\, 'J-mer, etc. In this case, the steel pipe body is placed by press-fitting rather than driving it. By the way, when a steel pipe body is press-fitted into the soil using such a press-in machine, an electric force or the like is used in conjunction with the press-in machine, but since the press-in force of the press-in machine is limited, the pile core and If the vertical accuracy is not precisely controlled, there is a risk that the steel pipe body will not be able to function once it is corrected. When steel pipe sheet piles are continuously driven in a ring shape to form a well, such an inclination makes it difficult to install the final closing pile, leading to a situation where the ring shape cannot be closed. ! When installing steel pipe bodies vertically, vertical accuracy must be particularly high.
ところが従来における鉛直精度の管理は、所定地盤に建
込んだ鋼管体を互いに直交する２方向（Ｘ方向及びｙ方
向）からトランシットで目視して鋼管体の鉛直を見なが
ら打設することで行なっていた。このために打設が進行
Ｌ７て地上に残る杭長が荀くなるにつれて鋼管体の傾き
の目視による検出が困雉となり検知精度が低くなってし
まう。また継杭にあっては上杭が頭部を残して地下に埋
オハ
して何よシもトラクタ・ソトを介した目視で鋼管体の傾
きを検知したとしても、このデータに基いて傾きを修正
するだめに、傾きが生じるごとに圧入機を停止させてこ
の状態で傾きの修正を手動で行なわざるを得す、非常に
手間と時間とがかかるものであった。However, in the past, vertical accuracy was controlled by visually observing the steel pipe body built on a specified ground using a transit from two mutually orthogonal directions (X direction and y direction), and driving the steel pipe body while checking the vertical direction of the steel pipe body. Ta. For this reason, as the driving progresses L7 and the length of the pile remaining on the ground decreases, it becomes difficult to visually detect the inclination of the steel pipe body, and the detection accuracy becomes low. In addition, in the case of joint piles, even if the upper pile is buried underground with the head remaining and the inclination of the steel pipe body can be detected visually using a tractor, the inclination can be determined based on this data. In order to correct the inclination, the press-fitting machine must be stopped every time the inclination occurs, and the inclination must be corrected manually in this state, which is extremely time-consuming and labor-intensive.
本発明はこのような点に鑑み為されたものであり、その
目的とするところは鋼管体の鉛直精度を高く保ちつつ圧
入することが容易に且つ迅速に行なわれる鋼管体の圧入
方法を提供するにある。The present invention has been made in view of these points, and its purpose is to provide a method for press-fitting a steel pipe body, which can easily and quickly perform press-fitting while maintaining high vertical accuracy of the steel pipe body. It is in.
以下本発明について説明すると、本発明は鋼管杭や鋼管
矢板等の鋼管体の外周面を締付保持する保持部を、保持
部に夫々連結させた複数の押込ジセッ＋で下降させて鋼
管体を土中に圧入するに際して、鋼管体の傾斜方向と傾
斜量どを検出する傾斜計の出力を入力とする側倒回路に
よシいずれかの押込ジセッ＋の作動をａの押込ジＰツ＋
の作動を継続させつつ一時停止させることによって、圧
入が進行中に鋼管体の傾きが目動修正さり、るようにし
たものであり、以ド図示の装置における実施例に基いて
詳述すると、ν］中ｍｉ−，を鋼管矢板である鋼゛踪体
であり、両側面には継手部（１１）（ＩＩ）を有し−ｔ
’（、する。この鋼管体（１）は掘削刃（１３）がド端
に取（＝Ｊけられて鋼管体（１）内に挿通されるオーｊ
５ （１２）によっ−Ｃ堀掘削れた穴に圧入機（２）で
圧入される。圧入機＋２１ Ｉ」：第２図及び第３図に
示すように、中央に鋼管体（１）が挿通さ１れる大径の
孔が設けられた架台ｔ２＋１と、この架台（２１）の４
隅に夫々配首された押込第１図・ソ士１３）と、これら
４本の押込ジセッ１川３）によっで土−ドに動かされる
締付枠（４）とから構成されるものであり、各押込ジセ
ッ士（３）はたとえば架台（２１）上の受座（２）υζ
士端の球形部を支持させること等によって全方向にある
範囲内で１頃き自在とされ且つ水平方向に微小範囲で移
動自在とされている油圧駆動型のものである。鋼管体Ｈ
の外周面全締付保持−する保持部であるところの締付枠
（４）は４つの１円弧状制動）を２木の枢軸（２４）と
２つの締付シリンター伐６）とで環状に連結して形成さ
れたものであって、各円弧状材（’２Ａ）に夫々押込、
；セラ士１３）の上部が１！１着されている。第４図は
この圧入機（２）の油圧回路図であり、油圧ボニノづ（
２Ｇ）の吐出側とりυり（２７）とが４ボ一ト３位置切
換の７（ｊ磁二油圧制机型の切換片（７）を夫々介し７
て各押込じセ・ソｔ−＋３＋の両端に接続され、また切
換弁（２ｓ）を介して締付シリジター（２５）の両端に
接続されている。To explain the present invention below, the present invention lowers a holding part that tightens and holds the outer circumferential surface of a steel pipe body such as a steel pipe pile or a steel pipe sheet pile using a plurality of pushers connected to the holding part, thereby lowering the steel pipe body. When press-fitting into the soil, the operation of either of the push-in screws is controlled by a side-turning circuit that receives the output of an inclinometer that detects the direction and amount of inclination of the steel pipe body.
By continuing the operation and temporarily stopping the operation, the inclination of the steel pipe body can be corrected by movement while press-fitting is in progress. ν] Middle mi-, is a steel shell which is a steel pipe sheet pile, and has joint parts (11) (II) on both sides, and -t
This steel pipe body (1) has a drilling blade (13) attached to the end (=J) and is inserted into the steel pipe body (1).
5 It is press-fitted into the hole excavated by (12) by the press-fitting machine (2). Press-in machine +21 I": As shown in Figures 2 and 3, there is a pedestal t2+1 with a large diameter hole in the center through which the steel pipe body (1) is inserted, and
It consists of a pusher (Fig. 1, 13) placed at each corner, and a tightening frame (4) that is moved to the ground by these four pushers (13). Yes, each pusher (3) is, for example, a catch plate (2) υζ on the pedestal (21).
It is a hydraulically driven type that can be moved freely within a certain range in all directions by supporting the spherical part of the end, and can be moved within a small range in the horizontal direction. Steel pipe body H
The tightening frame (4), which is the holding part that holds the entire outer circumferential surface of the brake, is annular with two wooden pivots (24) and two tightening cylinders (6). It is formed by connecting, and is pushed into each arc-shaped member ('2A), respectively.
;The upper part of Sera 13) is 1!1 in place. Figure 4 is a hydraulic circuit diagram of this press-in machine (2).
2G) discharge side port υ (27) and 7 (J magnetic dual hydraulic control type switching piece 7) with 4 buttons and 3 positions switching respectively.
It is connected to both ends of each pusher t-+3+, and is also connected to both ends of the tightening syringe (25) via a switching valve (2s).
画用泪（５）はその染勢の変化で１方向若しくは互いに
自交するｘ、ｙ２方向における傾斜量（傾斜角１象）を
電気的出力として出力する本のであり、Ｈ二人機（２）
の押込５１２９士（３）にｘ、ｙ両方向の傾斜を検出で
きるように取付けられている。ぞし−にの肖斜＊−ｔｆ
５＋の検知出力に基いて圧入機の各押込ジセッ＋１３）
に対応する切換弁（７）を１頃か・［の修正についてフ
ィードバックｆｉｉ１１倒゛する：１ｉｌ１画回路ｔ６
）が操作盤（し１示せず）に設けられて、Ｉ１１！Ｉ斜
計（５）、切換弁（７）、切換弁（２８１に４妾続され
ている。Painting Tears (5) is a book that outputs the amount of inclination (one angle of inclination) in one direction or two mutually orthogonal x and y directions as an electrical output due to the change in the dyeing force. )
It is attached to the push-in 5129 (3) so that tilts in both the x and y directions can be detected. Portrait of Zoshi-ni *-tf
Based on the detection output of 5+, each press-in machine presses +13)
The switching valve (7) corresponding to
) is provided on the operation panel (not shown), and I11! There are four connected to the I inclination meter (5), the switching valve (7), and the switching valve (281).
しかして水平面上に圧入機（２）を、投置し、・締付シ
リ：、Ｉター１２５）を縮めることで締Ｎ枠（４）が鋼
・管体１）のり（周面を締イτ１保持した状態で各切換
弁（７）を一方向に切換させれば、各押込ジトツ＋；ａ
）ｉ、ｆ締イ（Ｊ棒（４）４−Ｍ）直「方ｅこ上筒・さ
せて鋼管体１１１（ｒ−土中Ｋ ＩＩ人していく。そし
て、争岡に体（１）がたとえｒｔｘ ｘｈ方向（知いて
いるとすると、この時には押込ジセ・ソ＋（３）も傾い
ているからこの傾きは傾斜δ１（５）によって検出され
、傾斜方向と傾斜量とがスカされた制卸回路（６）はＸ
助士の２つの押込、；セラ士１３）のうちの一方の動作
を切換弁（７）を介して停止させるとともに他の３つの
押込ジセッ＋１３）の動作を続行させるＣとを、鋼管体
（１）が鉛直に戻る址でイー′ｊなわせて鉛部修正を行
ない、修正が終れば再度全押込、；１７ツ士（３）を作
動させる。そして押込ジセッ士（３）の１ス］−〇−フ
が完了すれば、これを検出するりミツトスイッチなどか
らの入力によって制量回路（６）はいったん締付シリジ
ター（２Ｆ９を伸長させて締伺枠（４）をゆるめ、この
状態で各切換弁（７）を他方に切換えて全押込ジセッ士
（３）を伸ばし締付枠（４）を上動させる。各押込ジセ
ッ＋（３）の伸長が終ればこれもり三ツトスイッチなど
からの入力によって制量回路（６）に締付枠（４）によ
る締付と押込ジセッ＋（３）による締付枠（４）の下降
とを行なわせて鋼管体（１）の圧入を再開させる。Then, place the press-fitting machine (2) on a horizontal surface, and tighten the tightening cylinder (125) so that the tightening frame (4) tightens the steel tube body (1) glue (the circumferential surface). If each switching valve (7) is switched in one direction with τ1 maintained, each push-in position +; a
) i, f tighten (J bar (4) 4-M) Directly move the upper tube to the steel pipe body 111 (r- Dochu K II). Even if we know the rtx Wholesale circuit (6) is X
A steel pipe body (1) is used to stop the operation of one of the two pushers (13) by the assistant and continue the operation of the other three pushers (13) through the switching valve (7). ) returns to vertical, adjust the lead part by adjusting E'j, and when the adjustment is completed, push it all the way down again and activate the 17th operator (3). When the push-in syringe operator (3) completes the first step, the control circuit (6) will extend the tightening syringe (2F9) and tighten it by detecting this or by inputting from a mitswitch, etc. Loosen the support frame (4), and in this state switch each switching valve (7) to the other side to extend the full push-in setter (3) and move the tightening frame (4) upward. When the extension is completed, input from a three-way switch or the like causes the control circuit (6) to tighten the clamping frame (4) and lower the clamping frame (4) using the pusher pusher (3). Press-fitting of the steel pipe body (1) is resumed.
この時、鋼管体ＩＩ）がｘｙ画力方向餉いてい／ヒと“
すると、傾斜計（５）からの傾斜方向と頗斜隈との倹升
出力によって制量回路＋６）ｌ＝」Ｘ、Ｙ両方向の各一
方の押込ジセッ＋（３）の動作を夫々ｘｙ各方向におけ
る傾きが修市されるまで停止させる。こうして出入動作
中に傾きを自動修正させつつ鋼管体ｆ＋＋を圧入してい
くわけである。At this time, the steel pipe body II) is tilted in the x and y direction.
Then, the control circuit + 6) l = ``Pushing in each of the X and Y directions + (3) operation is controlled in each of the x and y directions by the output of the inclination direction from the inclinometer (5) and the cervix. Stop until the slope at is corrected. In this way, the steel pipe body f++ is press-fitted while the inclination is automatically corrected during the movement of insertion and removal.
傾斜１１１ｂｌは必ずしも圧入機の押込シャツ士ｉ３）
に取イ」ける必要はなく、４４１？’休ｆ＋＋に直接取
付けてもよいのであるが、この場合は鋼管体（１）の傾
斜検知精度が高くなるものの、配線の処理がわずられし
く、−また制御１１１回路（６）と圧入機（２）とにお
いて設定しているｘｙ両方向に合わせて傾斜計−５）を
取イづける必要があって、これを間違えれば傾きを修市
できないことになってしまうので、圧入ｐｌ＆ｆ２１の
押込ジセツ＋（３）に取付ける方が好ましい。また傾斜
計（５）を押込シャツ士（３）に取イ」けた場合におけ
る傾斜検知精度を高めるには、第５図に示すようにｘｙ
各方向の傾きを検出する傾斜計（５ｘ） （５ｙ）を夫
々複数個として各押込ジセッ＋１３）に傾斜側（５）を
取付け、側脚回路（６）においてｘｙ各方向の傾斜は各
方向の傾斜側（５Ｘ） （５Ｘ）、（５ｙ） （５ｙ）
からの傾斜量出力の平均値をとるようにすると良い。す
なわちＸ方向上にある２つの傾斜計（５Ｘ） （５Ｘ）
からの各Ｘ方向における傾斜量出力がａ、ｂであれば、
（ａ＋ｂ）／２を切換弁（７）の側倒用データとするよ
うにするわけである。締付枠（４）と鋼管体（１）との
あたり具合などで第６図（ａ）（ｂ）に示すように鋼管
体（１）の実際の傾斜量と、傾斜計（５）が検出する押
込、；セラ士（３）の傾斜量が異なっていても、これを
補正でき、傾斜検知精度が高くなるものである。The slope 111bl is not necessarily a press-fitting machine's press-fitting machine i3)
There is no need to take it to 441? It is also possible to install it directly to the 111 circuit (6) and the press-in machine, but in this case, although the accuracy of detecting the inclination of the steel pipe body (1) is high, the wiring process is complicated, and the control 111 circuit (6) and the press-in machine are It is necessary to install the inclinometer -5) in accordance with both the x and y directions set in (2), and if you make a mistake, you will not be able to repair the inclination, so the press-in position of press-fit pl & f21 + It is preferable to attach it to (3). In addition, in order to improve the accuracy of inclination detection when the inclinometer (5) is placed in the position of the pusher (3), the xy
A plurality of inclinometers (5x) (5y) are installed to detect the inclination in each direction, and the inclination side (5) is attached to each pusher set (13).In the side leg circuit (6), the inclination in the x and y directions is Slope side (5X) (5X), (5y) (5y)
It is preferable to take the average value of the slope amount output from the . i.e. two inclinometers on the X direction (5X) (5X)
If the tilt amount output in each X direction from is a, b,
(a+b)/2 is set as data for side-turning the switching valve (7). The actual amount of inclination of the steel pipe body (1) and the inclinometer (5) detect it based on the contact between the clamping frame (4) and the steel pipe body (1) as shown in Figure 6 (a) and (b). Even if the amount of inclination of the pusher (3) differs, this can be corrected and the accuracy of inclination detection increases.
尚、図示例においては押込シャツ士（３）の数を４本と
して、ｘｙ両方向の各軸上に夫々２本の油圧ジセッΦ（
３）を配置したものとしたが、ｘｙ両方向のとり方は任
意で、第５関に想像線で示すようにＸ軸ｙ軸を定めても
良いのはもちろんであり、史には押込、；セラ＋（３）
の数が１２０°間隔の３本の場合で本、各押込シャツ士
（３）に取付ける傾斜計（６）が検出できる傾斜方向を
１２００間隔のｘ、ｅ、ｆ方向と１これらデータから３
本の押込ジセッ＋１３）を側倒回路が側脚するようにす
れば良い。この場合、Ｘ１ｅ、ｆ方向の各Ｅｆｉ重量を
ｘｙＸ方向傾斜量に変換してこれを基に押込シャツ士（
３）を側脚しても良いわけであり、従って押込シャツ士
１′３）の数と傾斜計（５）の数とが異なっていても良
いものである。In the illustrated example, the number of pushers (3) is four, and two hydraulic presses Φ(
3), but it is optional to take both the x and y directions, and it is of course possible to set the +(3)
In the case where there are 3 pieces at 120° intervals, the inclination direction that can be detected by the inclinometer (6) attached to each pusher (3) is determined from the x, e, and f directions at 1200 intervals. 1 From these data, 3
The book pushing mechanism +13) may be set so that the side-turning circuit is the side leg. In this case, each Efi weight in the X1e and f directions is converted into the amount of inclination in the xy
3) may be used as a side leg, and therefore the number of pushers 1'3) and the number of inclinometers (5) may be different.
以上のように本発明にあっては、鋼管体の傾斜は押込シ
ャツ士を傾斜計の出力を入力とする制量回路で制匈する
ことで自動修正される上に、このイ６正が圧入動作の進
行中に行なわれるものであって、鋼管体の鉛直精度を高
く保ちっつ圧入することが容易に且つ迅速に行なわれる
ものである。As described above, in the present invention, the inclination of the steel pipe body is automatically corrected by controlling the presser with a control circuit that inputs the output of the inclinometer. This is done while the operation is in progress, and the press-fitting of the steel pipe body can be done easily and quickly while maintaining high vertical accuracy.
第１図は本発明一実施例における装置の正面図、第２図
及び第３図は同上の圧入機の正面図及び平面図、第４図
は同上の圧入機の油圧回路図、第５図は他の実施例の装
置の概略平面図、第６図１（ａ’ｌ （ｂ）は同上の作
用説明図、第７図は（財）Ｋ他の実施例の装置の概略平
面図であり、ｉｌｌは鋼′＃床、１２）は圧入機、（３
）は押込シャツ士、（４）は保持部としての締付枠、（
５）は傾斜計、（６）は制量回路を示す。
代理人 弁理士 石 ＬＩＪ 長 七第１図
第２図Fig. 1 is a front view of an apparatus according to an embodiment of the present invention, Figs. 2 and 3 are a front view and a plan view of the same press-in machine, Fig. 4 is a hydraulic circuit diagram of the same press-in machine, and Fig. 5 6 is a schematic plan view of a device according to another embodiment, FIG. , ill is the steel floor, 12) is the press-in machine, (3
) is the push-in shirt operator, (4) is the tightening frame as a holding part, (
5) shows the inclinometer, and (6) shows the control circuit. Agent Patent Attorney Ishi LIJ Cho 7 Figure 1 Figure 2
Claims (1)
保持する保持部を、保持部に夫々連結させた複数本の押
込ジセッ＋でド降させて鋼管体を土中に圧入−Ｊ″るに
際して、＠管体のＩｌ、ａ斜方向と傾斜増とを倹１１Ｊ
する傾斜計の山力を入力とする制御回路によりいずれか
の叩込ジセッ士の作動を他の押込ジツ士の作動を継続さ
せつつ一時停止させることを特徴とする鋼管体の圧入方
法。(1) A holding part that tightens and holds the outer peripheral layer of a steel pipe body such as a steel pipe pile or steel pipe sheet pile is lowered using multiple pushers connected to the holding part, and the steel pipe body is pressed into the soil. - When increasing
1. A method for press-fitting a steel pipe body, characterized in that the operation of one of the push-fitters is temporarily stopped while the operation of the other push-fitters is continued by a control circuit that receives the mountain force of an inclinometer as input.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12470882A JPS5915125A (en) | 1982-07-16 | 1982-07-16 | Penetration of steel tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12470882A JPS5915125A (en) | 1982-07-16 | 1982-07-16 | Penetration of steel tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5915125A true JPS5915125A (en) | 1984-01-26 |
| JPH021929B2 JPH021929B2 (en) | 1990-01-16 |
Family
ID=14892130
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12470882A Granted JPS5915125A (en) | 1982-07-16 | 1982-07-16 | Penetration of steel tube |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5915125A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03500507A (en) * | 1988-04-22 | 1991-02-07 | アドバンスト ポリマー システムズ，インコーポレイティド | Porous particles in preparations with immiscible phases |
| EP1717375A1 (en) * | 2005-04-29 | 2006-11-02 | BAUER Maschinen GmbH | Apparatus and method for pressing and extracting sheet pile wall elements |
| CN102966107A (en) * | 2012-11-27 | 2013-03-13 | 恒天九五重工有限公司 | Triangular distribution-type pile-pressing oil cylinder device |
| EP3530811A1 (en) * | 2018-02-26 | 2019-08-28 | Liebherr-Werk Nenzing GmbH | Attachment for inserting pipework in pile foundation work and method of adjusting pile angle |
| JP2020012270A (en) * | 2018-07-17 | 2020-01-23 | 日本車輌製造株式会社 | Pile driver |
-
1982
- 1982-07-16 JP JP12470882A patent/JPS5915125A/en active Granted
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03500507A (en) * | 1988-04-22 | 1991-02-07 | アドバンスト ポリマー システムズ，インコーポレイティド | Porous particles in preparations with immiscible phases |
| EP1717375A1 (en) * | 2005-04-29 | 2006-11-02 | BAUER Maschinen GmbH | Apparatus and method for pressing and extracting sheet pile wall elements |
| CN102966107A (en) * | 2012-11-27 | 2013-03-13 | 恒天九五重工有限公司 | Triangular distribution-type pile-pressing oil cylinder device |
| EP3530811A1 (en) * | 2018-02-26 | 2019-08-28 | Liebherr-Werk Nenzing GmbH | Attachment for inserting pipework in pile foundation work and method of adjusting pile angle |
| DE102018104306A1 (en) * | 2018-02-26 | 2019-08-29 | Liebherr-Werk Nenzing Gmbh | An attachment for introducing a casing in the pile foundation and method for adjusting the pile inclination |
| JP2020012270A (en) * | 2018-07-17 | 2020-01-23 | 日本車輌製造株式会社 | Pile driver |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH021929B2 (en) | 1990-01-16 |
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