JP2005290941A - 逆転拡大ヘッド - Google Patents
逆転拡大ヘッド Download PDFInfo
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- JP2005290941A JP2005290941A JP2004130463A JP2004130463A JP2005290941A JP 2005290941 A JP2005290941 A JP 2005290941A JP 2004130463 A JP2004130463 A JP 2004130463A JP 2004130463 A JP2004130463 A JP 2004130463A JP 2005290941 A JP2005290941 A JP 2005290941A
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Abstract
【解決手段】 逆転拡大ヘッドの拡大翼を上下方向に摺動または揺動自在に支持し、段階的に所望段穿った分割拡開用スリットをガイドプレートに、拡大翼を被嵌してなる構成の装置にあり、また、スクリューロッドの正・逆回転力と拡大ヘッドの上下動と土圧とを利用して、拡大翼を段階的に小径から最大径へ、順次分割拡開させながら地中下端に球根を、及びまたは、中間拡径杭を造成することを特徴とする。
【選択図】 図2
Description
2,2’ ヘッドロッド
3,3’ 拡大ヘッド
4 ガイドプレート
5 スリット
6 拡大翼の分割拡開支持部
7,7’ 掘削刃
8 軸
9 取付け部
10 球体摺動支持受
11 取付け部
12 球体摺動支持受
13 ブラケット
a〜n スリット端面
Claims (2)
- 下端に掘削刃を有する拡大ヘッドロッドの上部外周部に設けられた拡大翼を、正回転掘削時には周囲の土圧により拡大翼を閉縮させ、逆回転時には周囲の土圧により拡大翼を拡開させる逆転拡大ヘッドにおいて、該逆転拡大ヘッドの拡大翼を上下方向に摺動または揺動自在に支持し、段階的に所望段穿った分割拡開用スリットをガイドプレートに、拡大翼を被嵌することを特徴とする逆転拡大へッド。
- 下端に掘削刃を有する拡大ヘッドロッドの上部外周部に設けられた拡大翼を、正回転掘削時には周囲の土圧により拡大翼を閉縮させ、逆回転時には周囲の土圧により拡大翼を拡開させる逆転拡大ヘッドを用いての杭造成方法において、スクリューロッドの正・逆回転力と拡大ヘッドの上下動と土圧とを利用して、拡大翼を段階的に小径から最大径へ、順次分割拡開させながら杭造成を行うことを特徴とする球根、または及び中間拡径杭の造成方法。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004130463A JP4424051B2 (ja) | 2004-03-31 | 2004-03-31 | 逆転拡大ヘッド |
Applications Claiming Priority (1)
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---|---|---|---|
JP2004130463A JP4424051B2 (ja) | 2004-03-31 | 2004-03-31 | 逆転拡大ヘッド |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2005290941A true JP2005290941A (ja) | 2005-10-20 |
JP4424051B2 JP4424051B2 (ja) | 2010-03-03 |
Family
ID=35324181
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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JP2004130463A Expired - Fee Related JP4424051B2 (ja) | 2004-03-31 | 2004-03-31 | 逆転拡大ヘッド |
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JP (1) | JP4424051B2 (ja) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007186948A (ja) * | 2006-01-16 | 2007-07-26 | Toyo Asano Found Co Ltd | 油圧拡大ヘッド制御装置 |
JP2013227766A (ja) * | 2012-04-25 | 2013-11-07 | Mitsubishi Materials Corp | 掘削工具 |
JP2019157379A (ja) * | 2018-03-08 | 2019-09-19 | 明和機械株式会社 | バケット |
-
2004
- 2004-03-31 JP JP2004130463A patent/JP4424051B2/ja not_active Expired - Fee Related
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007186948A (ja) * | 2006-01-16 | 2007-07-26 | Toyo Asano Found Co Ltd | 油圧拡大ヘッド制御装置 |
JP2013227766A (ja) * | 2012-04-25 | 2013-11-07 | Mitsubishi Materials Corp | 掘削工具 |
JP2019157379A (ja) * | 2018-03-08 | 2019-09-19 | 明和機械株式会社 | バケット |
JP7055352B2 (ja) | 2018-03-08 | 2022-04-18 | 明和機械株式会社 | バケット |
Also Published As
Publication number | Publication date |
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JP4424051B2 (ja) | 2010-03-03 |
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