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1. 发明专利

JP2005133313A Drill head 审中-公开
标题翻译：钻头
公开(公告)号：JP2005133313A
公开(公告)日：2005-05-26
申请号：JP2003367438
申请日：2003-10-28
申请人： Yuji Sano , 雄二佐野
发明人： SANO YUJI , SHIMADA CHIKASHI
IPC分类号： E21B19/02 , E21B7/20 , E21B10/00
摘要： PROBLEM TO BE SOLVED: To provide a drill head A, holding a buried material such as a steel pipe 100 buried while being rotated at a lower position, thereby facilitating and stabilizing the work for chucking the steel pipe before the start of work.
SOLUTION: This drill head A is split into two drill head body structures 20A, 20B, and a hollow rotating shaft 30 with a chuck 50 is also split into two rotating shaft members 30A, 30B, which are respectively rotatably fitted to the drill head body structures 20A, 20B. In the drill head A, in the open state shown in the drawing, the steel pipe 100 is taken in, and in the close state of the drill head body structures 20A, 20B, the steel pipe 100 is chucked in the hollow rotating shaft 30.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供一种钻头A，其保持埋设在诸如钢管100的掩埋材料，同时在下部位置旋转期间被掩埋，从而有助于和稳定在开始工作之前夹紧钢管的工作。解决方案：该钻头A分成两个钻头体结构20A，20B，并且具有卡盘50的中空旋转轴30也分成两个旋转轴构件30A，30B，它们分别可旋转地装配到钻头主体结构20A，20B。在钻头A中，在图中所示的打开状态下，钢管100被引入，并且在钻头本体结构20A，20B的关闭状态下，钢管100被卡在中空旋转轴30中（C）2005，JPO＆NCIPI

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