JP4015083B2 - 中掘りロッドの伸縮装置 - Google Patents
中掘りロッドの伸縮装置 Download PDFInfo
- Publication number
- JP4015083B2 JP4015083B2 JP2003295383A JP2003295383A JP4015083B2 JP 4015083 B2 JP4015083 B2 JP 4015083B2 JP 2003295383 A JP2003295383 A JP 2003295383A JP 2003295383 A JP2003295383 A JP 2003295383A JP 4015083 B2 JP4015083 B2 JP 4015083B2
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- JP
- Japan
- Prior art keywords
- cylinder
- digging rod
- rod
- pressure oil
- hydraulic cylinders
- 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
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- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
- Earth Drilling (AREA)
Description
2 駆動部
3 ガイドレール
7 杭回転用ケーシング
8 中掘りロッド回転用回転体
10 薬液通路
11 杭(中空杭)
15 ピストンロッド
16 油圧シリンダ
17 シリンダ束ね部材
20 上部薬液通路
23 下部薬液通路
25,26,27,28 圧油流路
29 ピストン
Claims (3)
- リーダマストにそって昇降動自在に吊持される駆動部に、下端に中空杭を接続する杭回転用ケーシングと、中掘りロッド回転用回転体とをそれぞれ回転駆動自在に支持し、前記回転体は、その上端に回転中心を中心として環状配置され前記駆動部側から圧油が給排される複数本の油圧シリンダの一端を支持するとともに該油圧シリンダの他端に円筒状の外筒を連結し、前記油圧シリンダを束ねるシリンダ束ね部材と前記外筒とを軸方向への摺動を許容し回転方向へは一体回転するよう嵌合し、前記シリンダ束ね部材の中心部と前記外筒の中心部とにあって、前記中掘りロッドの薬液通路に連通するよう設けられた上下の薬液通路を軸方向摺動可能に接続してなり、前記複数本の油圧シリンダに圧油を均等に給排して中掘りロッドを上下方向に伸縮動させるようにしたことを特徴とする中掘りロッドの伸縮装置。
- 前記駆動部に連結される連結軸部側に前記各油圧シリンダのピントンロッド端が固定され、各油圧シリンダのシリンダケース下端が前記外筒側に取り付けられ、前記連結軸部の中心孔に前記各油圧シリンダのピストンロッド内に形成された圧油給排用の圧油流路に連通する流路が設けられているとともにその周囲が前記上部薬液通路に連通する薬液通路とされている請求項1記載の中掘りロッドの伸縮装置。
- 前記シリンダ束ね部材は、前記油圧シリンダの本数に対応するよう内周面が多角形断面に形成され、この多角形内面により前記外筒にトルクを伝達するようになされている請求項1または2記載の中掘りロッドの伸縮装置。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003295383A JP4015083B2 (ja) | 2003-08-19 | 2003-08-19 | 中掘りロッドの伸縮装置 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003295383A JP4015083B2 (ja) | 2003-08-19 | 2003-08-19 | 中掘りロッドの伸縮装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2005061145A JP2005061145A (ja) | 2005-03-10 |
JP4015083B2 true JP4015083B2 (ja) | 2007-11-28 |
Family
ID=34371654
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2003295383A Expired - Fee Related JP4015083B2 (ja) | 2003-08-19 | 2003-08-19 | 中掘りロッドの伸縮装置 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP4015083B2 (ja) |
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2003
- 2003-08-19 JP JP2003295383A patent/JP4015083B2/ja not_active Expired - Fee Related
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JP2005061145A (ja) | 2005-03-10 |
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