发明名称 |
DRILLED HOLE PRECISION CORRECTING METHOD AND DRILLED HOLE PRECISION CORRECTING DEVICE |
摘要 |
PROBLEM TO BE SOLVED: To form an objective drilled hole by simply making a correction even when a plurality of drilling shafts are twisted as a whole during an excavation. SOLUTION: A plurality of drilling shafts 1 aligned in a line in the lateral direction are divided into the drilling shafts 1 rotated in one direction and the drilling shafts 1 rotated in the opposite direction. When the tip sections of the drilling shafts 1 are twisted as a whole and rotated and drifted as a whole on the plan view from the normal position in drilling the ground 2 while the drilling shafts 1 aligned in a line in the lateral direction are rotated, the revolving speed of the drilling shaft 1 giving the rotating force in the twisting direction among the drilling shafts 1 is reduced for drilling, thereby the drilling shafts 1 are rotated and returned in the opposite direction to the twisting direction as a whole.
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申请公布号 |
JP2002047685(A) |
申请公布日期 |
2002.02.15 |
申请号 |
JP20000233613 |
申请日期 |
2000.08.01 |
申请人 |
SEIKO KOGYO KK |
发明人 |
AKITA JUNICHI;YOSHIOKA MORIMITSU;NAKAJIMA TOSHIO;DEGUCHI EIICHI;ONOSHITA KATSUMI;SHIBAHARA KATSUMI;KUNITOU TOSHIMITSU |
分类号 |
E02F5/02;E02D3/12;(IPC1-7):E02F5/02 |
主分类号 |
E02F5/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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