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1. 发明授权

EP0741227B1 Borehole boring method and machine 失效
标题翻译：工具和方法，用于钻出一个钻孔
公开(公告)号：EP0741227B1
公开(公告)日：2003-08-13
申请号：EP95203177.1
申请日：1995-11-20
申请人： HITACHI CONSTRUCTION MACHINERY CO., LTD.
发明人： Aizawa, Kazuo , Washimi, Takeo , Kusakawa, Nobuhiro , Hari, Masanori, 252-7, Aza Sonachi , Satoh, Akira , Muraoka, Tadashi , Aihara, Tomihiro
IPC分类号： E21B7/28 , E21D1/06
CPC分类号： E21D1/06 , E21B7/28 , E21D3/00

2. 发明公开

EP0741227A2 Borehole boring method and machine 失效
标题翻译：工具和方法，用于钻出一个钻孔
公开(公告)号：EP0741227A2
公开(公告)日：1996-11-06
申请号：EP95203177.1
申请日：1995-11-20
申请人： HITACHI CONSTRUCTION MACHINERY CO., LTD.
发明人： Aizawa, Kazuo , Washimi, Takeo , Kusakawa, Nobuhiro , Hari, Masanori, 252-7, Aza Sonachi , Satoh, Akira , Muraoka, Tadashi , Aihara, Tomihiro
IPC分类号： E21B7/28
CPC分类号： E21D1/06 , E21B7/28 , E21D3/00
摘要： A pilot hole (6) is drilled in a ground (1) by a first drilling unit having a rotary table (3) and a down-the-hole drill (2) (see FIG. 1A). A guide rod (7) is inserted into the pilot hole (6). A second drilling unit (8) is then mounted on the guide rod (7). This second drilling unit (8) is provided with an earth drilling bucket (19a) for drilling the ground (1), hydraulic cylinders (60) for fixing a stationary unit (10) of the second drilling unit on a wall of a target borehole (7a) in the ground (1), and another hydraulic cylinder (21) for causing the earth drilling bucket (19a) to advance. Drilling reaction force during boring work can thus be supported by both the wall of the target borehole (7a) and the guide rod (7). While being rotated, the earth drilling bucket (19a) is caused to advance over a distance corresponding to a stroke of the hydraulic cylinder (21). This operation is repeated until the target borehole (7a) is formed over its entire length.

3. 发明公开

EP0741227A3 Borehole boring method and machine 失效
标题翻译： Werkzeug und Verfahren zum Bohren eines Bohrloches
公开(公告)号：EP0741227A3
公开(公告)日：1997-11-19
申请号：EP95203177.1
申请日：1995-11-20
申请人： HITACHI CONSTRUCTION MACHINERY CO., LTD.
发明人： Aizawa, Kazuo , Washimi, Takeo , Kusakawa, Nobuhiro , Hari, Masanori, 252-7, Aza Sonachi , Satoh, Akira , Muraoka, Tadashi , Aihara, Tomihiro
IPC分类号： E21B7/28
CPC分类号： E21D1/06 , E21B7/28 , E21D3/00
摘要： A pilot hole (6) is drilled in a ground (1) by a first drilling unit having a rotary table (3) and a down-the-hole drill (2) (see FIG. 1A). A guide rod (7) is inserted into the pilot hole (6). A second drilling unit (8) is then mounted on the guide rod (7). This second drilling unit (8) is provided with an earth drilling bucket (19a) for drilling the ground (1), hydraulic cylinders (60) for fixing a stationary unit (10) of the second drilling unit on a wall of a target borehole (7a) in the ground (1), and another hydraulic cylinder (21) for causing the earth drilling bucket (19a) to advance. Drilling reaction force during boring work can thus be supported by both the wall of the target borehole (7a) and the guide rod (7). While being rotated, the earth drilling bucket (19a) is caused to advance over a distance corresponding to a stroke of the hydraulic cylinder (21). This operation is repeated until the target borehole (7a) is formed over its entire length.
摘要翻译：通过具有旋转台（3）和下孔钻（2）（见图1A）的第一钻孔单元在地面（1）中钻出导向孔（6）。引导杆（7）插入引导孔（6）中。然后将第二钻孔单元（8）安装在导杆（7）上。该第二钻机单元（8）设置有用于钻探地面（1）的挖土铲斗（19a），用于将第二钻井单元的固定单元（10）固定在目标钻孔壁上的液压缸（60）（1）内的液压缸（7a）和用于使地面钻井铲斗（19a）前进的另一液压缸（21）。因此，钻孔加工过程中的钻孔反作用力可以由目标钻孔（7a）的壁和导杆（7）两者支撑。在旋转的同时，使钻地铲斗（19a）前进超过与液压缸（21）的行程相对应的距离。重复该操作，直到在其整个长度上形成目标钻孔（7a）。

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