Deprecated: The each() function is deprecated. This message will be suppressed on further calls in /home/zhenxiangba/zhenxiangba.com/public_html/phproxy-improved-master/index.php on line 456
JP4141285B2 - Bolt hole drilling device for foundation pile connection - Google Patents
[go: Go Back, main page]

JP4141285B2 - Bolt hole drilling device for foundation pile connection - Google Patents

Bolt hole drilling device for foundation pile connection Download PDF

Info

Publication number
JP4141285B2
JP4141285B2 JP2003055058A JP2003055058A JP4141285B2 JP 4141285 B2 JP4141285 B2 JP 4141285B2 JP 2003055058 A JP2003055058 A JP 2003055058A JP 2003055058 A JP2003055058 A JP 2003055058A JP 4141285 B2 JP4141285 B2 JP 4141285B2
Authority
JP
Japan
Prior art keywords
foundation pile
bolt hole
drilling
bolt
engagement
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.)
Expired - Fee Related
Application number
JP2003055058A
Other languages
Japanese (ja)
Other versions
JP2004261922A (en
Inventor
範行 荒川
公太郎 河本
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kubota Corp
Original Assignee
Kubota Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Kubota Corp filed Critical Kubota Corp
Priority to JP2003055058A priority Critical patent/JP4141285B2/en
Publication of JP2004261922A publication Critical patent/JP2004261922A/en
Application granted granted Critical
Publication of JP4141285B2 publication Critical patent/JP4141285B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Landscapes

  • Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
  • Drilling And Boring (AREA)

Description

【0001】
【発明の属する技術分野】
この発明は、基礎杭接続用のボルト孔穿孔装置に関する。
【0002】
【従来の技術】
建築用の基礎杭として、鋳鉄管や鋼管の先端に螺旋条を形成した回転埋設工法用の基礎杭が知られている(特許文献1)。
【0003】
上記鋳鉄管の基礎杭は管の一端に形成した受口に他の管の挿口を挿入してボルトなどで接続していけば容易に基礎杭を長尺化できるので、深基礎の施工が容易にできる利点を有する。
【0004】
そして、ボルトによる基礎杭の接続には、従来、図6に示すように既に打ち込んだ基礎杭1の地表Gから突き出た挿口2に、新規基礎杭1の受口3を被せるようにして接続し、受口3外面部分に穿孔工具(図示省略)で、図7に示すように直径方向に貫通孔4を穿設し、ここに接続ボルト5を挿入して基礎杭1、1同士を軸方向に接続した上でナット7を締め付けて締結することが行われていた。
【0005】
【特許文献1】
特開2001-98545号公報、図3、図4
【0006】
【発明が解決しようとする課題】
しかし、管を接続固定するためのボルト孔4は、中心軸1aに正しく直交する方向に穿設する必要があるが、この穿設作業は通常現場作業となるので正しい方向にボルト孔を穿設するのは容易でない問題があった。特に、図6に示したように先端に螺旋条6を有する基礎杭1の場合、回転トルクはボルトを介して伝達されるので、ボルト貫通部分に加わる負荷を均等にするため、ボルト貫通孔は正しく中心を通る直径方向に穿設する必要がある。
【0007】
さらに、複数本のボルトで基礎杭1を接続する場合は、それぞれのボルトから基礎杭の管壁に加えられる外力が全周に渡って均一に分散されるよう、ボルトの貫通軸線が平面視で円周を等分するように穿設されていることが望ましい。
【0008】
この発明は、上記のように正しく中心を通ってボルト孔を穿設し、あるいは平面視で正しく等分された中心角を有して容易に複数のボルト孔を穿設出来る工具を開発することを課題としてなされたものである。
【0009】
【課題を解決するための手段】
請求項1の基礎杭接続用のボルト孔穿孔装置は、鋳鉄、鋼鉄などの金属製基礎杭の外周に着脱自在に固定される環体の外面に、前記基礎杭の中心軸と直交して貫通する方向に接続用ボルト孔の穿孔工具を支持する係合金具が設けられ、該係合金具に接続用ボルト孔の穿孔工具が、穿孔軸を前記金属製基礎杭の直径方向に向けて着脱自在に取り付けられ、前記係合金具は環体外周に周方向に沿って複数個設けられ、かつ、各係合金具は少なくとも接続用ボルトの直径より大きい距離だけ軸方向に隔たった位置に設けられてなるものである。
【0010】
従って、この基礎杭接続用のボルト孔穿孔装置によれば、環体を基礎杭の外周に取付け、この環体外周の係合金具に穿孔工具を取り付ければ、穿孔軸が基礎杭の中心軸を通って正しく穿設されるので、施工現場であっても正しくボルト孔が穿設できる。しかも、複数のボルト孔を穿設する場合、係合金具に穿孔工具を取り付けるだけで次々とボルト孔が穿設できる。また、穿孔工具が干渉しなければ二つ以上のボルト孔であっても同時に穿孔も可能となる。
【0013】
【発明の実施の形態】
次に、この発明の実施の形態である基礎杭接続用のボルト孔穿孔装置を説明する。
【0014】
図1は、この発明の実施の形態である基礎杭接続用のボルト孔穿孔装置の側面図、図2は同平面図である。
図1において10は、基礎杭1の外周に着脱自在に固定される環体を示し、図3、図5に示すように二つの半割体11、11の一端を蝶番12で連接し、他端にクランプ装置13を設け、図1、図2に示すように基礎杭1の受口3外周に巻きつけて開口部をクランプ装置13でクランプすることにより固定できるようにされている。なお、このクランプ装置13はトグル機構を用いたものが使用され、一方の半割体11の縁に設けた留金具13aに引っ掛けたフック13bの他端を、支点13cで支持されたレバー13dの支点13cより径方向外側位置13eで連接し、レバー13dを矢印方向へ倒すことで二つの半割体11、11が基礎杭1外周に強く巻きつき固定するようにされている。
【0015】
そして、この環体10の外周には、図2、図3に示すように、ボルト孔穿孔工具14の係合金具15が設けられている。
この係合金具15は、環体10の外面に径方向外側に突設された支持板17、17と、この支持板17、17の先端間に二枚の板体21、21が直交するように配置され、板体21、21間の隙間20が、ガイド18の脚部19を受容する嵌合部とされ、このガイド18上に穿孔工具14が取付けられるように構成されている。なお、図示例の場合、係合金具15は、環体10の外周に平面視で中心角が90°をなすよう二箇所に設けられている。
【0016】
なお、このように二箇所以上の複数箇所にわたって係合金具15、15を取り付ける場合、それぞれの係合金具15…は、図1、図4に示すように接続用ボルト5の直径より大きい距離dだけ軸方向に隔たって設けられる。
【0017】
次に、ガイド18は、係合金具15に脚部19を介し、環体10の中心軸16に対し直交姿勢に固定されるようにされ、ガイド18の側面には、ガイド溝22が設けられ、ガイド18の上面からまたぐようにしてガイド溝22にスライダ23が摺嵌され、ガイド18に沿って摺動移動可能にされている。
【0018】
ガイド18の底面にはラック24が設けられ、スライダ23下面に軸支したピニヨン25がラック24に噛み合うようにされ、ハンドル26でピニヨン25を回転操作することによってスライダ23がガイド18に沿って進退するようにされている。
【0019】
このスライダ23に穿孔工具14が取付けられ、先端にホールソー27を取り付けた回転軸28が基礎杭1に直径方向へ向き、ハンドル26の操作によってホールソー27が基礎杭1表面に切り込んでいくようにされている。
【0020】
なお、図中29は穿孔工具14の回転軸28の中間軸受を示し、回転軸の振れをなくすために設けられたものである。
なお、穿孔工具14そのものは、通常使用されているものが使用され、スライダ23上面に適宜手段で固定される。
【0021】
次に、この発明の基礎杭接続用のボルト孔穿孔装置の使用方法について説明する。
図5に示すように、環体10を開き、挿口2に受口3を被せて接続した基礎杭1の外周、図示例の場合は挿口2の外周で受口3の開口端3aに接する位置に、図1に示すように環体10巻きつけクランプ装置13を締付け、固定する。次いで、係合金具15に脚部19を差し込んでガイド18を取付ける。ガイド18には予めスライダ23、及び穿孔工具14が取付けられているので、穿孔工具14の回転軸28の向き、即ちボルト孔の穿孔方向は環体10の中心軸16に対して直交する方向となる。
【0022】
そして、穿孔工具14を駆動し、ハンドル26を操作してホールソー27を基礎杭1の外面に切り込ませていくのである。
このとき、穿孔工具14はガイド18により環体10に対し中心軸方向へ支持され、また環体10は基礎杭1の外周に隙間無く固定されているので、ボルト孔は正しく基礎杭1の中心を通って貫設される。
【0023】
なお、二以上のボルト孔を穿設する場合は、一つのボルト孔穿設後、別の係合金具15にガイド18を取り付けて同様に穿孔する。
このときに穿孔されるボルト孔は、基礎杭1の軸方向に対して、少なくともボルトの直径より大きく離れているので、同時に挿入されるボルトが互いに干渉してしまうことはない。
【0024】
また、二つのガイド18をそれぞれの係合金具15に取り付け同時にボルト孔を穿設することも出来る。
【0025】
【発明の効果】
以上説明したように、この発明の基礎杭接続用のボルト孔穿孔装置によれば、ボルト孔を基礎杭外周に穿設する場合、環体とガイドにより穿孔装置は正しく基礎杭の直径方向に支持されるので、現場施工であっても基礎杭に適正なボルト孔を穿設することができ、しかも穿孔中、穿孔工具はガイドによってしっかりと支持されるので穿設されたボルト孔の軸線も狂うことがなく、しかも、複数のボルト孔を穿設する場合、係合金具に穿孔工具を取り付けるだけで次々とボルト孔が穿設でき、また、穿孔工具が干渉しなければ二つ以上のボルト孔であっても同時に穿孔も可能となるなどの効果を有する。
【図面の簡単な説明】
【図1】この発明の実施の形態である基礎杭接続用のボルト孔穿孔装置の側面図である。
【図2】この発明の実施の形態である基礎杭接続用のボルト孔穿孔装置の平面図である。
【図3】環体の平面図である。
【図4】環体の側面図である。
【図5】開いた状態の環体の平面図である。
【図6】金属管の基礎杭の説明斜視図である。
【図7】金属管の基礎杭の説明断面図である。
【符号の説明】
1 直管
2 挿口
3 受口
4 ボルト孔
5 ボルト
6 螺旋条ボルト
7 ナット
10 環体
11 半割体
12 蝶番
13 クランプ装置
14 ボルト孔穿孔工具
15 係合金具
17 支持板
18 ガイド
19 脚部
20 隙間
21 板体
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a bolt hole drilling device for connecting foundation piles.
[0002]
[Prior art]
As a foundation pile for construction, a foundation pile for a rotary burying method in which a spiral strip is formed at the tip of a cast iron pipe or a steel pipe is known (Patent Document 1).
[0003]
Since the foundation pile of the cast iron pipe can be easily lengthened by inserting the insertion hole of another pipe into the receptacle formed at one end of the pipe and connecting it with bolts, etc. Has the advantage of being easy to do.
[0004]
And the connection of the foundation pile by a bolt is conventionally made by covering the insertion opening 2 protruding from the ground surface G of the foundation pile 1 already driven in as shown in FIG. Then, a through hole 4 is formed in the diameter direction as shown in FIG. 7 with a drilling tool (not shown) on the outer surface of the receiving port 3, and a connecting bolt 5 is inserted into the through hole 4 so that the foundation piles 1 and 1 are pivoted. The nut 7 is tightened and fastened after being connected in the direction.
[0005]
[Patent Document 1]
JP 2001-98545 A, FIG. 3 and FIG.
[0006]
[Problems to be solved by the invention]
However, the bolt hole 4 for connecting and fixing the pipe needs to be drilled in a direction correctly orthogonal to the central axis 1a. However, since this drilling operation is usually an on-site work, the bolt hole is drilled in the correct direction. There was a problem that was not easy to do. In particular, in the case of the foundation pile 1 having the spiral strip 6 at the tip as shown in FIG. 6, the rotational torque is transmitted through the bolt. Therefore, in order to equalize the load applied to the bolt penetration portion, It is necessary to drill in the diametrical direction passing through the center correctly.
[0007]
Furthermore, when the foundation pile 1 is connected with a plurality of bolts, the through-axis of the bolt is viewed in plan so that the external force applied from each bolt to the pipe wall of the foundation pile is evenly distributed over the entire circumference. It is desirable to perforate the circumference equally.
[0008]
The present invention develops a tool that can drill a bolt hole correctly through the center as described above, or can easily drill a plurality of bolt holes with a center angle that is correctly divided in a plan view. Is made as an issue.
[0009]
[Means for Solving the Problems]
The bolt hole drilling device for connecting a foundation pile according to claim 1 penetrates the outer surface of an annular body detachably fixed to the outer periphery of a metal foundation pile such as cast iron or steel, perpendicular to the center axis of the foundation pile. engagement alloy member is provided for supporting the drilling tool of the connection bolt holes in the direction of, the engagement alloy tool, drilling tool of connecting bolt hole, with its perforation axis in the diameter direction of the metal foundation pile detachable A plurality of the engagement fittings are provided on the outer periphery of the ring body along the circumferential direction, and each engagement fitting is provided at a position separated in the axial direction by a distance larger than the diameter of the connection bolt. It will be.
[0010]
Therefore, according to the bolt hole drilling device for connecting the foundation pile, if the ring is attached to the outer periphery of the foundation pile and the drilling tool is attached to the engagement metal fitting on the outer periphery of the ring pile, the drilling axis is set to the center axis of the foundation pile. Since it is drilled correctly, the bolt hole can be drilled correctly even at the construction site. Moreover, when a plurality of bolt holes are drilled, the bolt holes can be drilled one after another simply by attaching a drilling tool to the engagement fitting. If the drilling tool does not interfere, even two or more bolt holes can be drilled simultaneously.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Next, a bolt hole drilling device for connecting foundation piles according to an embodiment of the present invention will be described.
[0014]
FIG. 1 is a side view of a bolt hole drilling device for connecting foundation piles according to an embodiment of the present invention, and FIG. 2 is a plan view thereof.
In FIG. 1, reference numeral 10 denotes a ring body that is detachably fixed to the outer periphery of the foundation pile 1. As shown in FIGS. 3 and 5, one end of the two halves 11, 11 is connected by a hinge 12, and the like. A clamp device 13 is provided at the end, and is wound around the outer periphery of the receiving port 3 of the foundation pile 1 and clamped by the clamp device 13 as shown in FIGS. The clamping device 13 uses a toggle mechanism. The other end of the hook 13b hooked to the clasp 13a provided on the edge of one half 11 is connected to the lever 13d supported by the fulcrum 13c. The two halves 11 and 11 are tightly wound around and fixed to the outer periphery of the foundation pile 1 by connecting them at a radially outer position 13e from the fulcrum 13c and tilting the lever 13d in the direction of the arrow.
[0015]
Further, as shown in FIGS. 2 and 3, an engagement fitting 15 for the bolt hole drilling tool 14 is provided on the outer periphery of the ring body 10.
The engagement metal fitting 15 includes support plates 17, 17 projecting radially outward from the outer surface of the ring body 10, and two plate bodies 21, 21 orthogonal to each other between the tips of the support plates 17, 17. The gap 20 between the plate bodies 21 and 21 is a fitting portion that receives the leg portion 19 of the guide 18, and the drilling tool 14 is mounted on the guide 18. In the case of the illustrated example, the engagement metal fittings 15 are provided at two locations on the outer periphery of the ring body 10 so that the center angle is 90 ° in plan view.
[0016]
In addition, when engaging metal fittings 15 and 15 are attached over two or more places in this way, each engaging metal fitting 15 is a distance d larger than the diameter of the connecting bolt 5 as shown in FIGS. Only axially spaced apart.
[0017]
Next, the guide 18 is fixed to the engagement fitting 15 through the leg portion 19 in an orthogonal posture with respect to the central axis 16 of the ring body 10, and a guide groove 22 is provided on the side surface of the guide 18. A slider 23 is slidably fitted into the guide groove 22 so as to straddle the upper surface of the guide 18 so as to be slidable along the guide 18.
[0018]
A rack 24 is provided on the bottom surface of the guide 18, and a pinion 25 pivotally supported on the lower surface of the slider 23 is engaged with the rack 24, and the slider 23 moves forward and backward along the guide 18 by rotating the pinion 25 with the handle 26. Have been to.
[0019]
A drilling tool 14 is attached to the slider 23, a rotary shaft 28 having a hole saw 27 attached to the tip thereof is directed to the foundation pile 1 in the diametrical direction, and the hole saw 27 is cut into the surface of the foundation pile 1 by operating the handle 26. ing.
[0020]
In the figure, reference numeral 29 denotes an intermediate bearing of the rotary shaft 28 of the drilling tool 14, which is provided to eliminate runout of the rotary shaft.
In addition, what is used normally is used for the drilling tool 14 itself, and it is suitably fixed to the upper surface of the slider 23 by means.
[0021]
Next, the usage method of the bolt hole drilling apparatus for foundation pile connection of this invention is demonstrated.
As shown in FIG. 5, the ring body 10 is opened, and the outer periphery of the foundation pile 1 connected by covering the insertion port 2 with the receiving port 3, and in the illustrated example, the outer periphery of the insertion port 2 is connected to the opening end 3 a of the receiving port 3. As shown in FIG. 1, the ring body 10 winding clamp device 13 is fastened and fixed at the contact position. Next, the leg portion 19 is inserted into the engagement fitting 15 and the guide 18 is attached. Since the slider 18 and the drilling tool 14 are attached to the guide 18 in advance, the direction of the rotating shaft 28 of the drilling tool 14, that is, the direction of drilling the bolt hole is perpendicular to the central axis 16 of the ring body 10. Become.
[0022]
Then, the drilling tool 14 is driven, the handle 26 is operated, and the hole saw 27 is cut into the outer surface of the foundation pile 1.
At this time, the drilling tool 14 is supported by the guide 18 in the center axis direction with respect to the ring body 10, and the ring body 10 is fixed to the outer periphery of the foundation pile 1 without a gap, so that the bolt hole is correctly positioned at the center of the foundation pile 1. Pierced through.
[0023]
When two or more bolt holes are to be drilled, after drilling one bolt hole, a guide 18 is attached to another engagement fitting 15 and drilled in the same manner.
Since the bolt hole drilled at this time is separated from the axial direction of the foundation pile 1 by at least larger than the diameter of the bolt, the bolts inserted simultaneously do not interfere with each other.
[0024]
Further, the two guides 18 can be attached to the respective engagement fittings 15 and the bolt holes can be formed at the same time.
[0025]
【The invention's effect】
As described above, according to the bolt hole drilling device for connecting a foundation pile according to the present invention, when the bolt hole is drilled on the outer periphery of the foundation pile, the drilling device is correctly supported by the ring and the guide in the diameter direction of the foundation pile. Therefore, it is possible to drill appropriate bolt holes in the foundation pile even at site construction, and during drilling, the drilling tool is firmly supported by the guide, so the axis of the drilled bolt holes goes wrong. Kotogana rather, moreover, when drilling a plurality of bolt holes, can bored one after another bolt holes simply attaching a drilling tool into engagement alloy tool, also two or more bolts unless the drilling tool interferes Even if it is a hole, it has the effect that it can be simultaneously drilled .
[Brief description of the drawings]
FIG. 1 is a side view of a bolt hole drilling device for connecting foundation piles according to an embodiment of the present invention.
FIG. 2 is a plan view of a bolt hole drilling device for connecting foundation piles according to an embodiment of the present invention.
FIG. 3 is a plan view of an annulus.
FIG. 4 is a side view of an annulus.
FIG. 5 is a plan view of the ring body in an open state.
FIG. 6 is an explanatory perspective view of a foundation pile of metal pipe.
FIG. 7 is an explanatory cross-sectional view of a metal pipe foundation pile.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Straight pipe 2 Insert 3 Receptacle 4 Bolt hole 5 Bolt 6 Spiral thread bolt 7 Nut 10 Ring body 11 Half split body 12 Hinge 13 Clamping device 14 Bolt hole drilling tool 15 Engagement metal fitting 17 Support plate 18 Guide 19 Leg 20 Gap 21 Plate

Claims (1)

鋳鉄、鋼鉄などの金属製基礎杭の外周に着脱自在に固定される環体の外面に、前記基礎杭の中心軸と直交して貫通する方向に接続用ボルト孔の穿孔工具を支持する係合金具が設けられ、該係合金具に接続用ボルト孔の穿孔工具が、穿孔軸を前記金属製基礎杭の直径方向に向けて着脱自在に取り付けられ、前記係合金具は環体外周に周方向に沿って複数個設けられ、かつ、各係合金具は少なくとも接続用ボルトの直径より大きい距離だけ軸方向に隔たった位置に設けられてなる基礎杭接続用のボルト孔穿孔装置。Engagement metal that supports a drilling tool for a connecting bolt hole in a direction penetrating perpendicularly to the center axis of the foundation pile on the outer surface of a ring body detachably fixed to the outer periphery of a metal foundation pile such as cast iron or steel A fitting tool is provided, and a drilling tool for a connection bolt hole is detachably attached to the engagement fitting with the drilling shaft directed in the diameter direction of the metal foundation pile , and the engagement fitting is arranged around the outer periphery of the ring body. A bolt hole drilling device for connecting foundation piles, which is provided in plural along the direction, and each engaging metal fitting is provided at a position axially separated by at least a distance larger than the diameter of the connecting bolt .
JP2003055058A 2003-03-03 2003-03-03 Bolt hole drilling device for foundation pile connection Expired - Fee Related JP4141285B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2003055058A JP4141285B2 (en) 2003-03-03 2003-03-03 Bolt hole drilling device for foundation pile connection

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2003055058A JP4141285B2 (en) 2003-03-03 2003-03-03 Bolt hole drilling device for foundation pile connection

Publications (2)

Publication Number Publication Date
JP2004261922A JP2004261922A (en) 2004-09-24
JP4141285B2 true JP4141285B2 (en) 2008-08-27

Family

ID=33119174

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2003055058A Expired - Fee Related JP4141285B2 (en) 2003-03-03 2003-03-03 Bolt hole drilling device for foundation pile connection

Country Status (1)

Country Link
JP (1) JP4141285B2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104827075B (en) * 2015-04-22 2017-12-05 扬州汇翔精密冲件有限公司 A kind of round steel fixes drilling tool structure
CN106541165B (en) * 2016-11-21 2018-05-29 中山市奥斯精工机械科技有限公司 Integral type revolving meber automatic centering drilling equipment
JP7062575B2 (en) * 2018-11-19 2022-05-06 株式会社エムオーテック Jig for drilling holes in steel pipes and drilling methods

Also Published As

Publication number Publication date
JP2004261922A (en) 2004-09-24

Similar Documents

Publication Publication Date Title
EP2411584B1 (en) Tubular connector
CN100450679C (en) Universal quick change hole saw arbor
US8770897B2 (en) Coring tool alignment assembly
US8137036B2 (en) Coring tool alignment system
JP4141285B2 (en) Bolt hole drilling device for foundation pile connection
JP2015206208A (en) chuck device of steel pipe pile
JPH0581333U (en) Jig for rotary penetration of steel pipe pile
CN113309559A (en) Tunnel escape pipeline installation device and installation method thereof
JP3626408B2 (en) Yatco
JP2010189905A (en) End plate support device
JPH09234699A (en) Drilling guide device for drilling machine of large diameter tube
JP2008229815A (en) Coated tube peeling device
JP5981207B2 (en) Installation tool introduction method
JP3642047B2 (en) Auger device and pile driving method
JP6296509B2 (en) A gripping device for rotationally press-fitting a steel pipe, and a method for gripping a steel pipe.
JP2017082559A (en) Pile structural member joint structure and pile body, and pile structural member joint method and pile body manufacturing method
JP6583856B2 (en) Drill stopper
JPH0452013Y2 (en)
JP2001303571A (en) Jig device for rotating steel pipe piles
JP4543070B2 (en) Steel pipe press-in auxiliary device and steel pipe press-in method using the same
JP3363426B2 (en) Chuck device
JP3135204U (en) Boring equipment
JP6923143B2 (en) Fittings for steel pipes
JP6890929B2 (en) Connection method of pile components and pile construction machine
JP2846992B2 (en) Segment assembly equipment

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20050908

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20080110

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20080115

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20080317

TRDD Decision of grant or rejection written
RD04 Notification of resignation of power of attorney

Free format text: JAPANESE INTERMEDIATE CODE: A7424

Effective date: 20080430

A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20080513

A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20080610

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20110620

Year of fee payment: 3

R150 Certificate of patent or registration of utility model

Ref document number: 4141285

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

Free format text: JAPANESE INTERMEDIATE CODE: R150

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20120620

Year of fee payment: 4

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20130620

Year of fee payment: 5

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20140620

Year of fee payment: 6

LAPS Cancellation because of no payment of annual fees