JP2002210611A - Pile head cutting method of steel pipe pile and steel pipe cutting machine - Google Patents
Pile head cutting method of steel pipe pile and steel pipe cutting machineInfo
- Publication number
- JP2002210611A JP2002210611A JP2001009611A JP2001009611A JP2002210611A JP 2002210611 A JP2002210611 A JP 2002210611A JP 2001009611 A JP2001009611 A JP 2001009611A JP 2001009611 A JP2001009611 A JP 2001009611A JP 2002210611 A JP2002210611 A JP 2002210611A
- Authority
- JP
- Japan
- Prior art keywords
- pile head
- steel pipe
- cutting
- pile
- rotary 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
Landscapes
- Piles And Underground Anchors (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、鋼管杭の杭頭切断
方法及び鋼管切断機に関する。The present invention relates to a pile head cutting method for a steel pipe pile and a steel pipe cutting machine.
【０００２】[0002]
【従来の技術】地面に打ち込まれた鋼管杭の杭頭処理
は、杭頭をその外周側からガスで切断し、しかる後、切
断端に杭頭鋼板を溶接で接合するというようにして行わ
れていた。2. Description of the Related Art Pile head treatment of a steel pipe pile driven into the ground is performed by cutting the pile head from the outer peripheral side with a gas and then welding the pile head steel plate to the cut end by welding. I was
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、杭頭の
切断を鋼管杭の外周側から行う切断方法では、杭頭の切
断位置が地面下に位置するような場合に、杭頭周囲の土
を除去しなければならず、杭頭処理に手間を要するとい
う問題があった。しかも、地面に打ち込まれた杭の杭頭
を現場でガス切断するため、切断作業が天候に左右され
やすいという問題もあった。However, in the cutting method of cutting the pile head from the outer peripheral side of the steel pipe pile, when the cutting position of the pile head is located below the ground, the soil around the pile head is removed. Therefore, there is a problem that it takes time to process the pile head. Moreover, since the pile head of the pile driven into the ground is gas-cut at the site, there is a problem that the cutting work is easily affected by the weather.
【０００４】本発明は、上記のような従来の問題点に鑑
み、杭頭の切断位置が地面下に位置するような場合であ
っても杭頭周囲の土を除去せずに杭頭を切断することが
でき、しかも、天候に左右されないで杭頭の切断を行う
ことができる杭頭切断方法及び鋼管切断機を提供するこ
とを課題とする。[0004] In view of the above-mentioned conventional problems, the present invention provides a method for cutting a pile head without removing soil around the pile head even when the cutting position of the pile head is located below the ground. It is another object of the present invention to provide a pile head cutting method and a steel pipe cutting machine capable of cutting a pile head without being affected by the weather.
【０００５】[0005]
【課題を解決するための手段】上記の課題は、切断用回
転刃を備えた切断機を用い、その回転刃を、地面に打ち
込まれた鋼管杭の杭頭内部に挿入し、杭頭の管壁をその
内周側から切断していくことを特徴とする鋼管杭の杭頭
切断方法によって解決される。The object of the present invention is to provide a cutting machine having a rotary blade for cutting, and inserting the rotary blade into a pile head of a steel pipe pile driven into the ground, thereby forming a pipe at the pile head. The problem is solved by a pile head cutting method for a steel pipe pile, characterized in that a wall is cut from the inner peripheral side thereof.
【０００６】この切断方法では、杭頭をその内周側から
切断するため、杭頭の切断位置が地面下に位置するよう
な場合であっても杭頭周囲の土を除去せずに杭頭を切断
していくことができる。In this cutting method, since the pile head is cut from the inner peripheral side thereof, even if the cutting position of the pile head is located below the ground, the pile head is not removed without removing the soil around the pile head. Can be cut.
【０００７】しかも、回転刃を回転させて杭頭を切断す
るものであるため、天候に左右されずに杭頭切断作業を
行っていくことができる。Further, since the pile head is cut by rotating the rotary blade, the pile head cutting operation can be performed without being affected by the weather.
【０００８】加えて、杭頭をその内周側から切断するの
に回転刃を用いているので、杭の内径よりも小さい回転
刃を用いることで、杭の内径が小さいような場合であっ
ても杭頭をその内周側から確実に切断することができ
る。In addition, since the rotary blade is used to cut the pile head from the inner peripheral side, using a rotary blade smaller than the inner diameter of the pile may make the pile inner diameter smaller. Also, the pile head can be reliably cut from its inner peripheral side.
【０００９】上記の切断方法に使用する鋼管切断機とし
て、例えば、切断用回転刃と、回転刃を回転させる機構
と、鋼管と係合することで回転刃を鋼管内の所定の深さ
位置に保持する機構と、鋼管と係合することで鋼管内の
回転刃の回転軸線を鋼管の軸線方向と平行に保持する機
構と、回転刃を、鋼管内で、鋼管の管壁を切断しない待
機位置と、待機位置から側方に進出させて鋼管の管壁を
切断する切断作動位置とに切り替える機構と、切断作動
位置の回転刃を、切断作動位置に保持したまま、鋼管の
軸線回りで公転させる機構とが備えられていることを特
徴とする鋼管切断機を用いるとよい。As a steel pipe cutting machine used in the above cutting method, for example, a rotary blade for cutting, a mechanism for rotating the rotary blade, and a rotary blade at a predetermined depth position in the steel pipe by engaging with the steel pipe. A mechanism for holding, a mechanism for holding the rotation axis of the rotary blade in the steel pipe in parallel with the axial direction of the steel pipe by engaging with the steel pipe, and a standby position in which the rotary blade does not cut the pipe wall of the steel pipe in the steel pipe A mechanism for switching to a cutting operation position for cutting the pipe wall of the steel pipe by advancing sideways from the standby position, and revolving the rotary blade at the cutting operation position around the axis of the steel pipe while maintaining the rotating blade at the cutting operation position. It is preferable to use a steel pipe cutting machine characterized by having a mechanism.
【００１０】この鋼管切断機では、鋼管との係合で、回
転刃を鋼管内の所定の深さ位置に保持することができる
と共に、回転刃の回転軸線を鋼管の軸線方向と平行に保
持することができ、そして、その状態で、回転刃を待機
位置から側方に進出させて鋼管切断作動位置へと切り替
え、鋼管の軸線回りで公転させることで、杭頭を水平度
高くきれいに切断することができる。従って、杭頭用の
蓋材を杭頭の切断端面に安定良く水平にセットすること
ができ、蓋材を杭頭に内嵌め及び／又は外嵌めするだけ
で無溶接で杭頭に取り付けることができ、杭頭への蓋材
の取付けについてもこれを天候に左右されず特殊技能や
溶接機器を不要にして品質良好でかつ容易に行うことが
できる。In this steel pipe cutting machine, by engaging with the steel pipe, the rotary blade can be held at a predetermined depth position in the steel pipe, and the rotation axis of the rotary blade is held parallel to the axial direction of the steel pipe. And in this state, the rotary blade is advanced from the standby position to the side to switch to the steel pipe cutting operation position, and revolves around the axis of the steel pipe, thereby cutting the pile head neatly and horizontally. Can be. Therefore, the cover material for the pile head can be stably and horizontally set on the cut end face of the pile head, and the cover material can be attached to the pile head without welding by simply fitting the cover material inside and / or outside. Also, the attachment of the lid material to the pile head can be performed with good quality and easily without the need for special skills or welding equipment, regardless of the weather.
【００１１】鋼管内における切断刃の切断の深さ位置を
変化させる機構が備えられている場合は、地面への杭の
打込み深さ寸法が大小異なるような場合であっても、切
断刃を杭頭内部の必要な深さ位置に位置させることがで
き、杭頭を所定の高さ位置において切断することができ
る。In the case where a mechanism for changing the cutting depth position of the cutting blade in the steel pipe is provided, the cutting blade can be mounted on the pile even if the driving depth of the pile into the ground varies. The pile head can be located at a required depth position, and the pile head can be cut at a predetermined height position.
【００１２】[0012]
【発明の実施の形態】次に、本発明の実施形態を図面に
基づいて説明する。Next, embodiments of the present invention will be described with reference to the drawings.
【００１３】図１に示す実施形態の杭頭切断方法におい
て、１は地面に打ち込んだ鋼管杭の杭頭部分、２は切断
用回転刃であり、回転刃２は、図１（ロ）に示すよう
に、杭頭１の内径よりも小さいものを用いる。杭頭１の
切断は、図１（イ）に示すように、回転刃２の回転軸線
を上下方向に向け、この回転刃２を、杭頭１の上端開口
部を通じて杭頭１内の所定の深さ位置まで挿入する。し
かる後、この回転刃２を回転させながら図１（ハ）に示
すように側方に偏心させ、その外周刃部を、杭頭１の管
壁に切り込ませていき、杭頭１の外周面より外方に突出
させる。そして、この偏心状態を維持しながら、図１
（ニ）に示すように、回転刃２を杭頭１の軸線回りで管
壁の全周にわたって公転移動させていく。こうして、鋼
管杭の杭頭１が切断される。In the pile head cutting method of the embodiment shown in FIG. 1, reference numeral 1 denotes a pile head portion of a steel pipe pile driven into the ground, reference numeral 2 denotes a rotary blade for cutting, and rotary blade 2 is shown in FIG. As described above, the one smaller than the inner diameter of the pile head 1 is used. As shown in FIG. 1 (a), the cutting of the pile head 1 is performed by turning the rotation axis of the rotary blade 2 in the up-down direction. Insert to the depth position. Thereafter, as shown in FIG. 1C, the rotary blade 2 is eccentric to the side while rotating, and the outer peripheral edge portion is cut into the pipe wall of the pile head 1 so that the outer periphery of the pile head 1 is removed. Protrude outward from the surface. While maintaining this eccentric state, FIG.
As shown in (d), the rotary blade 2 revolves around the axis of the pile head 1 over the entire circumference of the pipe wall. Thus, the pile head 1 of the steel pipe pile is cut.
【００１４】従って、この杭頭切断方法では、杭頭１を
その内周側から切断するため、杭頭１の切断予定位置が
地面下に位置するような場合であっても杭頭周囲の土を
除去せずに杭頭１を切断することができる。しかも、回
転刃２で杭頭１を切断するため、ガス切断の場合のよう
に杭頭切断作業が天候に左右されることもない。そし
て、杭頭１をその内部から切断するのに回転刃２を用い
ているので、杭頭１の内径が小さいような場合であって
も、回転刃２として杭頭１の内径よりも小さいものを用
いることで、そのような杭頭１をその内部側から確実に
切断することができる。Therefore, in this pile head cutting method, since the pile head 1 is cut from the inner peripheral side thereof, even if the cutting position of the pile head 1 is located below the ground, the soil around the pile head 1 is cut. The pile head 1 can be cut without removing the pile head. Moreover, since the pile head 1 is cut by the rotary blade 2, the pile head cutting operation does not depend on the weather as in the case of gas cutting. And since the rotary blade 2 is used for cutting the pile head 1 from the inside, even if the inner diameter of the pile head 1 is small, the rotary blade 2 is smaller than the inner diameter of the pile head 1. By using this, such a pile head 1 can be reliably cut from the inside thereof.
【００１５】上記の杭頭切断方法に用いる切断機とし
て、図２及び図３に示すような鋼管切断機３を用い、こ
れを杭頭１の内部に挿入して切断するとよい。As a cutting machine used in the pile head cutting method described above, a steel pipe cutting machine 3 as shown in FIGS. 2 and 3 may be used, which is inserted into the pile head 1 and cut.
【００１６】この切断機３は、環状ベース盤４を備え、
この環状ベース盤４の環内に、円筒状の外筒５が、縦向
きで環状ベース盤４と同心状態に通され、環状ベース盤
４に保持されている。This cutting machine 3 includes an annular base plate 4,
In the ring of the annular base board 4, a cylindrical outer cylinder 5 is passed vertically and concentrically with the annular base board 4, and is held by the annular base board 4.
【００１７】この外筒５の上下の端部にはそれぞれ軸受
けとなる端板６，６が取り付けられ、これらの端板６，
６にはそれぞれ、外筒５の軸芯位置から側方に偏心した
周方向の同じ位置において孔７，７があけられ、円筒状
の内筒８がこれら孔７，７にしっくりと通されて外筒５
内に縦向きに差し込まれ、内筒８の上下の端部には、外
筒５の上下の端板６，６を外側から挟むように端板９，
９が取り付けられ、内筒８は、外筒５の上下の端板６，
６を軸受けとして自軸回りで回転できるようになされて
いる。At the upper and lower ends of the outer cylinder 5, end plates 6, 6 serving as bearings are attached, respectively.
6 are provided with holes 7 at the same position in the circumferential direction eccentrically laterally from the axial center position of the outer cylinder 5, and the cylindrical inner cylinder 8 is passed through these holes 7. Outer cylinder 5
The upper and lower end portions of the inner tube 8 are inserted vertically into the inner tube 8 so as to sandwich the upper and lower end plates 6 and 6 of the outer tube 5 from outside.
9 is attached, and the inner cylinder 8 includes upper and lower end plates 6 of the outer cylinder 5.
6 can be rotated around its own axis as a bearing.
【００１８】内筒８内には、内筒８の軸芯位置から側方
に偏心して回転シャフト１０が縦向きで通され、この回
転シャフト１０の下端は、端板９を貫通して下方に突出
し、そこに回転刃２が取り付けられ、回転シャフト１０
の上端は、上側の端板９に上方突出状態に取り付けられ
たモーターなどによる回転駆動源１１と接続されてい
る。In the inner cylinder 8, a rotating shaft 10 is vertically eccentrically passed eccentrically from the axial center position of the inner cylinder 8, and the lower end of the rotating shaft 10 penetrates the end plate 9 and extends downward. The rotary blade 2 is attached to the
Is connected to a rotary drive source 11 such as a motor mounted on the upper end plate 9 in a protruding state.
【００１９】そして、環状ベース盤４には、その下面側
において、３つのガイドローラー１２…が周方向に間隔
的に備えられ、環状ベース盤４よりも下方に突出する外
筒部分を杭頭１内に挿入して、これらガイドローラー１
２…を杭頭１の上端面に載せて係合させることで、回転
刃２を杭頭１の内の所定の深さ位置に保持することがで
きるようになされている。On the lower surface side of the annular base plate 4, three guide rollers 12 are provided at intervals in the circumferential direction, and an outer cylindrical portion projecting downward from the annular base plate 4 is attached to the pile head 1. Insert these guide rollers 1
The rotary blade 2 can be held at a predetermined depth position in the pile head 1 by placing and engaging with the upper end surface of the pile head 1.
【００２０】また、これらガイドローラー１２…は、杭
頭１の上端部周壁面にも係合するようになっていて、杭
頭１の上端面に載せた切断機３の側方への移動が規制さ
れるようになされていると共に、切断機３を杭頭１の軸
線回りで回転移動させることができるようになされてい
る。The guide rollers 12 are also adapted to engage with the peripheral wall surface at the upper end of the pile head 1 so that the cutting machine 3 placed on the upper end surface of the pile head 1 can move laterally. In addition to being restricted, the cutting machine 3 can be rotated around the axis of the pile head 1.
【００２１】更に、外筒５の下端側の外周面にも３つの
ガイドローラー１３…が周方向に間隔的に備えられ、こ
れらのガイドローラー１３…を杭頭１の内部奥方の内周
面に係合させることで、上記のガイドローラー１２…と
の協働により、杭頭１内の回転刃２の回転軸線が杭頭１
の軸線方向と平行に縦向きに保持されるようになされて
いる。Further, three guide rollers 13 are provided on the outer peripheral surface on the lower end side of the outer cylinder 5 at intervals in the circumferential direction. The rotation axis of the rotary blade 2 in the pile head 1 is adjusted by the engagement with the guide rollers 12.
Is held in a vertical direction in parallel with the axial direction.
【００２２】また、内筒８の上端板９には、内筒８を自
軸回りで回転変位させる操作レバー１４が備えられ、こ
の操作レバー１４を操作して内筒８を自軸回りで回転変
位させることで、回転刃２を、杭頭１内で、図３に示す
ように杭頭１の管壁を切断しない待機位置と、図４
（イ）に示すように待機位置から側方に進出させて杭頭
１の管壁を切断する切断作動位置とに切り替えることが
できるようになされている。The upper end plate 9 of the inner cylinder 8 is provided with an operation lever 14 for rotating and displacing the inner cylinder 8 around its own axis. The operation lever 14 is operated to rotate the inner cylinder 8 around its own axis. By displacing the rotary blade 2 in the pile head 1, a standby position where the pipe wall of the pile head 1 is not cut as shown in FIG.
As shown in (a), it is possible to switch from the standby position to the cutting operation position in which the tube wall of the pile head 1 is advanced sideways and cut.
【００２３】そして、上記のガイドローラー１２…，１
３…により、回転刃２を切断作動位置に保持したまま環
状ベース盤４及び外筒５を回転させることで、回転刃２
は杭頭１の軸線回りで公転移動することができるように
なっている。１６は、そのためのレバーである。Then, the guide rollers 12...
By rotating the annular base plate 4 and the outer cylinder 5 while keeping the rotary blade 2 at the cutting operation position, the rotary blade 2
Can revolve around the axis of the pile head 1. Reference numeral 16 denotes a lever for that purpose.
【００２４】更に、外筒５は、ガイドとストッパー、あ
るいはネジ送り機構などにより、環状ベース盤４に対し
て上下に高さ位置を変更できるようになっていて、これ
により、図５（イ）に示すように、杭頭１内における回
転刃２の切断の深さ位置を変化させて調節できるように
なっている。Further, the height of the outer cylinder 5 can be changed vertically with respect to the annular base plate 4 by means of a guide and a stopper, a screw feed mechanism, or the like. As shown in FIG. 1, the depth of cutting of the rotary blade 2 in the pile head 1 can be changed and adjusted.
【００２５】この切断機３では、環状ベース盤４よりも
下方に突出する外筒部分５を杭頭１内に挿入し、ガイド
ローラー１２…，１３…を杭頭１の管壁に係合させて位
置決め状態にセットし、外筒５の高さ位置を調節する。
そして、回転刃２を回転駆動し、図４（イ）に示すよう
に、操作レバー１４を操作して回転刃２を待機位置から
切断作動位置へと進出させ、杭頭１の周壁に切り込ませ
ていき、外周刃部を杭頭１の周壁の外に突出させる。し
かる後、図４（ロ）に示すように、環状ベース盤４及び
外筒５を回転させ、回転刃２を杭頭１の軸線回りで公転
移動させていく。これにより、杭頭１の周壁が周方向に
切断されていき、全周を切断することで、杭頭１は切断
される。In the cutting machine 3, the outer cylinder portion 5 projecting downward from the annular base plate 4 is inserted into the pile head 1, and the guide rollers 12,. To adjust the height of the outer cylinder 5.
Then, the rotary blade 2 is driven to rotate, and as shown in FIG. 4A, the operating lever 14 is operated to advance the rotary blade 2 from the standby position to the cutting operation position, and cut into the peripheral wall of the pile head 1. Then, the outer peripheral blade portion is projected out of the peripheral wall of the pile head 1. Thereafter, as shown in FIG. 4B, the annular base plate 4 and the outer cylinder 5 are rotated, and the rotary blade 2 is revolved around the axis of the pile head 1. As a result, the peripheral wall of the pile head 1 is cut in the circumferential direction, and the pile head 1 is cut by cutting the entire circumference.
【００２６】この鋼管切断機３を用いることで、回転刃
２を杭頭１内の所定の深さ位置に保持することができる
と共に、回転刃２の回転軸線を杭頭１の軸線方向と平行
に保持することができ、そして、その状態で、回転刃２
を待機位置から側方に進出させて鋼管切断作動位置へと
切り替え、杭頭１の軸線回りで公転移動させることで、
杭頭１を容易にしかも水平度高くきれいに切断すること
ができる。By using this steel pipe cutting machine 3, the rotary blade 2 can be held at a predetermined depth position in the pile head 1, and the rotation axis of the rotary blade 2 is parallel to the axial direction of the pile head 1. And in that state, the rotary blade 2
Is advanced to the side from the standby position, switched to the steel pipe cutting operation position, and revolved around the axis of the pile head 1,
The pile head 1 can be cut easily and cleanly with high horizontality.
【００２７】そして、このように水平度高くきれいに切
断することができることで、杭頭用の蓋材を杭頭１の切
断端面に安定良く水平にセットすることができ、そのた
め、杭頭蓋材として、図５（ロ）に示すように、杭頭鋼
板１５ａの下面に杭頭内周面に嵌合させる凸部１５ｂを
備えさせた杭頭キャップ１５を用い、これを杭頭１に内
嵌めしてセットするだけで、無溶接で、杭頭１に取り付
けることができ、杭頭１への蓋材１５の取付けを、天候
に左右されず、特殊技能や溶接機器を不要にして品質良
好でかつ容易に行うことができる。Since the pile can be cut cleanly with a high degree of horizontality, the cover material for the pile head can be stably and horizontally set on the cut end face of the pile head 1. As shown in FIG. 5 (b), a pile head cap 15 having a projection 15b to be fitted to the inner peripheral surface of the pile head is used on the lower surface of the pile head steel plate 15a. Just by setting, it can be attached to the pile head 1 without welding, and the attachment of the lid 15 to the pile head 1 is good quality and easy without the need for special skills and welding equipment, regardless of the weather. Can be done.
【００２８】また、この鋼管切断機３によれば、地面へ
の杭の打込み深さ寸法が大小異なるような場合であって
も、図２及び図４（イ）に比較して示すように、外筒５
を環状ベース盤４に対して上下に変位させることで、回
転刃２を杭頭１内部の必要な深さ位置に位置させること
ができ、杭頭１を適正な所定の高さ位置において切断す
ることができる。Further, according to the steel pipe cutting machine 3, even when the driving depths of the piles on the ground are different in size, as shown in FIG. 2 and FIG. Outer cylinder 5
Is displaced up and down with respect to the annular base plate 4, the rotary blade 2 can be positioned at a required depth position inside the pile head 1, and the pile head 1 is cut at an appropriate predetermined height position. be able to.
【００２９】以上に、本発明の実施形態を示したが、本
発明はこれに限られるものではなく、発明思想を逸脱し
ない範囲で、各種の変更が可能である。例えば、上記の
実施形態では、特定構造の鋼管切断機３を用いて杭頭１
の切断を行う場合を示しているが、回転刃を備えた各種
形態の切断機を用いて切断を行うようにしてもよい。ま
た、本発明の鋼管切断機は、杭頭の切断に限らず、各種
鋼管の切断に用いることができるものであることはいう
までもない。Although the embodiment of the present invention has been described above, the present invention is not limited to this, and various modifications can be made without departing from the spirit of the invention. For example, in the above embodiment, the pile head 1 is formed using the steel pipe cutting machine 3 having a specific structure.
Although the case where the cutting is performed is shown, the cutting may be performed using various types of cutting machines provided with a rotary blade. Moreover, it goes without saying that the steel pipe cutting machine of the present invention can be used not only for cutting pile heads but also for cutting various steel pipes.
【００３０】[0030]
【発明の効果】本発明は、以上のとおりのものであるか
ら、杭頭の切断位置が地面下に位置するような場合であ
っても杭頭周囲の土を除去せずに杭頭を切断することが
でき、しかも、天候に左右されないで杭頭の切断を行う
ことができる。The present invention is as described above. Therefore, even when the cutting position of the pile head is located below the ground, the pile head is cut without removing the soil around the pile head. And the cutting of the pile head can be performed independently of the weather.
【図１】実施形態の杭頭切断方法を順次に示すもので、
図（イ）は断面側面図、図（ロ）乃至図（ニ）は断面平
面図である。FIG. 1 shows a pile head cutting method according to an embodiment in order.
FIG. 1A is a sectional side view, and FIGS. 2B to 2D are sectional plan views.
【図２】実施形態の杭頭切断機を示す断面側面図であ
る。FIG. 2 is a sectional side view showing the pile head cutting machine of the embodiment.
【図３】同平面図である。FIG. 3 is a plan view of the same.
【図４】図（イ）及び図（ロ）は切断機による切断方法
を順次に示す平面図である。FIGS. 4A and 4B are plan views sequentially showing a cutting method by a cutting machine.
【図５】図（イ）は切断刃を杭頭内で上昇させた断面側
面図、図（ロ）は杭頭キャップを取り付けた切断後の杭
頭部分を示す断面側面図である。FIG. 5A is a cross-sectional side view in which a cutting blade is raised in a pile head, and FIG. 5B is a cross-sectional side view showing a pile head portion after cutting with a pile head cap attached.
１…杭頭（鋼管） ２…回転刃 ３…鋼管切断機 1 ... pile head (steel pipe) 2 ... rotary blade 3 ... steel pipe cutting machine
───────────────────────────────────────────────────── フロントページの続き (72)発明者 清水 貞雄 大阪府大阪市北区梅田３丁目３番５号 大 和ハウス工業株式会社内 (72)発明者 木下 大洋 大阪府大阪市北区梅田３丁目３番５号 大 和ハウス工業株式会社内 (72)発明者 平田 茂良 大阪府大阪市北区梅田３丁目３番５号 大 和ハウス工業株式会社内 (72)発明者 永石 憲幸 福岡県北九州市八幡東区大谷１丁目３番１ 号 株式会社アステック入江内 (72)発明者 浅本 秀樹 福岡県北九州市八幡東区大谷１丁目３番１ 号 株式会社アステック入江内 (72)発明者 板垣 淳 東京都東村山市多摩湖町２丁目11番45号 富士商事株式会社内 Ｆターム(参考） 2D041 AA02 BA37 CA01 CB06 DB02 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Sadao Shimizu 3-5-5 Umeda, Kita-ku, Osaka-shi, Osaka Daiwa House Industry Co., Ltd. (72) Inventor Hiroshi Kinoshita 3-chome Umeda, Kita-ku, Osaka, Osaka No. 3-5 Daiwa House Industry Co., Ltd. (72) Inventor Shigera Hirata 3-5-3 Umeda, Kita-ku, Osaka City, Osaka Prefecture Daiwa House Industry Co., Ltd. (72) Inventor Noriyuki Nagaishi Yawata, Kitakyushu-shi, Fukuoka Prefecture 1-31-2 Otani, Higashi-ku Astec Irie, Inc. (72) Inventor Hideki Asamoto 1-3-1, Otani, Yawata-Higashi-ku, Kitakyushu-shi, Fukuoka Prefecture Astec Irie, Inc. (72) Inventor Jun Itagaki Tokyo 2-11-45, Tamako-cho, Higashimurayama-shi F-term in Fuji Corporation (reference) 2D041 AA02 BA37 CA01 CB06 DB02
Claims (3)
の回転刃を、地面に打ち込まれた鋼管杭の杭頭内部に挿
入し、杭頭の管壁をその内周側から切断していくことを
特徴とする鋼管杭の杭頭切断方法。A cutting machine equipped with a cutting rotary blade is inserted into the pile head of a steel pipe pile driven into the ground, and the pipe wall of the pile head is cut from the inner peripheral side. A method for cutting a pile head of a steel pipe pile.
に保持する機構と、 鋼管と係合することで鋼管内の回転刃の回転軸線を鋼管
の軸線方向と平行に保持する機構と、 回転刃を、鋼管内で、鋼管の管壁を切断しない待機位置
と、待機位置から側方に進出させて鋼管の管壁を切断す
る切断作動位置とに切り替える機構と、 切断作動位置の回転刃を、切断作動位置に保持したま
ま、鋼管の軸線回りで公転させる機構とが備えられてい
ることを特徴とする鋼管切断機。2. A cutting rotary blade, a mechanism for rotating the rotary blade, a mechanism for holding the rotary blade at a predetermined depth position in the steel pipe by engaging with the steel pipe, and engaging with the steel pipe. A mechanism for holding the rotation axis of the rotary blade in the steel pipe parallel to the axial direction of the steel pipe, a standby position in the steel pipe where the pipe wall of the steel pipe is not cut, and a steel pipe that is advanced laterally from the standby position. A mechanism for switching to a cutting operation position for cutting the pipe wall of the steel pipe, and a mechanism for revolving around the axis of the steel pipe while holding the rotary blade at the cutting operation position at the cutting operation position. Steel pipe cutting machine.
を変化させる機構が備えられている請求項２に記載の鋼
管切断機。3. The steel pipe cutting machine according to claim 2, further comprising a mechanism for changing a cutting depth position of the cutting blade in the steel pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001009611A JP4841731B2 (en) | 2001-01-18 | 2001-01-18 | Steel pipe cutting machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001009611A JP4841731B2 (en) | 2001-01-18 | 2001-01-18 | Steel pipe cutting machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2002210611A true JP2002210611A (en) | 2002-07-30 |
| JP4841731B2 JP4841731B2 (en) | 2011-12-21 |
Family
ID=18877061
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001009611A Expired - Fee Related JP4841731B2 (en) | 2001-01-18 | 2001-01-18 | Steel pipe cutting machine |
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| Country | Link |
|---|---|
| JP (1) | JP4841731B2 (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008045342A (en) * | 2006-08-17 | 2008-02-28 | Koyama Kosakusho:Kk | Pile foundation structure and pile head treatment method |
| JP2008296339A (en) * | 2007-06-01 | 2008-12-11 | Ae System:Kk | Pipe cutter |
| WO2009014095A1 (en) * | 2007-07-20 | 2009-01-29 | Fuji Machine Works Co., Ltd. | Tube cutting device and tube manufacturing method |
| US20120103162A1 (en) * | 2010-11-03 | 2012-05-03 | Kenneth Heaton | Sink drain fitting cutter guide |
| JP2013180362A (en) * | 2012-03-01 | 2013-09-12 | Save Machine Co Ltd | Cutting machine |
| JP2015021538A (en) * | 2013-07-18 | 2015-02-02 | 株式会社松岡カッター製作所 | Method of burying unnecessary pipeline |
| US20160067875A1 (en) * | 2014-09-09 | 2016-03-10 | Kenneth Heaton | Sink drain fitting cutter guide |
| US10286569B1 (en) * | 2010-11-03 | 2019-05-14 | Kenneth Guy Heaton | Cut-out tool |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102340349B1 (en) * | 2021-04-20 | 2021-12-16 | 신형수 | Cutting head and pipe cutting device including the same |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0313330A (en) * | 1989-06-13 | 1991-01-22 | Mitsubishi Motors Corp | Highly corrosion-resistant steel plate |
-
2001
- 2001-01-18 JP JP2001009611A patent/JP4841731B2/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0313330A (en) * | 1989-06-13 | 1991-01-22 | Mitsubishi Motors Corp | Highly corrosion-resistant steel plate |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008045342A (en) * | 2006-08-17 | 2008-02-28 | Koyama Kosakusho:Kk | Pile foundation structure and pile head treatment method |
| JP2008296339A (en) * | 2007-06-01 | 2008-12-11 | Ae System:Kk | Pipe cutter |
| WO2009014095A1 (en) * | 2007-07-20 | 2009-01-29 | Fuji Machine Works Co., Ltd. | Tube cutting device and tube manufacturing method |
| CN101743086B (en) * | 2007-07-20 | 2012-06-13 | 株式会社富士机械工作所 | Tube cutting device and tube manufacturing method |
| US10059017B2 (en) | 2007-07-20 | 2018-08-28 | Fuji Machine Works Co., Ltd. | Tube cutting apparatus |
| US20120103162A1 (en) * | 2010-11-03 | 2012-05-03 | Kenneth Heaton | Sink drain fitting cutter guide |
| US8858135B2 (en) * | 2010-11-03 | 2014-10-14 | Kenneth Heaton | Sink drain fitting cutter guide |
| US10286569B1 (en) * | 2010-11-03 | 2019-05-14 | Kenneth Guy Heaton | Cut-out tool |
| JP2013180362A (en) * | 2012-03-01 | 2013-09-12 | Save Machine Co Ltd | Cutting machine |
| JP2015021538A (en) * | 2013-07-18 | 2015-02-02 | 株式会社松岡カッター製作所 | Method of burying unnecessary pipeline |
| US20160067875A1 (en) * | 2014-09-09 | 2016-03-10 | Kenneth Heaton | Sink drain fitting cutter guide |
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| Publication number | Publication date |
|---|---|
| JP4841731B2 (en) | 2011-12-21 |
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