基本信息:
- 专利标题： METHOD AND DEVICE FOR NOTCH FORMATION FOR BLASTING HOLE
- 申请号：JP8259694 申请日：1994-03-30
- 公开(公告)号：JPH07269267A 公开(公告)日：1995-10-17
- 发明人： SASAKI MITSUO , HAYASHI HIRONOBU , MURAYAMA TSUNEMI , FURUNAGA TATSUHIRO , YOSHIKAWA KENJI , ENDO YOSHIHIKO
- 申请人： NIPPON STEEL CORP , OKUMURA CORP
- 专利权人： NIPPON STEEL CORP,OKUMURA CORP
- 当前专利权人： NIPPON STEEL CORP,OKUMURA CORP
- 优先权： JP8259694 1994-03-30
- 主分类号： E21C37/04
- IPC分类号： E21C37/04 ; C21B7/00
摘要：
PURPOSE:To follow the shape of a hole wall even if the shape of a hole is changed and form a notch in specified dimensions. CONSTITUTION:A support member 40, which mounts a pair of operation members 60 rotatively mounted thereto by means of a pivot 50, is inserted into a blasting hole 20 and the support member 40 is pushed in at the depth of the blasting hole 20, thereby expanding the operation members 60 in the radial direction for the hole. A notch formation bit 70 mounted at a position opposed to the blasting hole 20 of the operation member 60 is arranged to follow the shape of a wall of the blasting hole 20, thereby forming a notch 21. In the case when pulling out the support member 40 toward the front of the blasting hole 20, the operation member 60 is reduced in the hole-size direction by the expansion means.
公开/授权文献:
- JP2976062B2 公开/授权日：1999-11-10
信息查询:
EspacenetIPC结构图谱:
| E | 固定建筑物 |
| --E21 | 土层或岩石的钻进；采矿 |
| ----E21C | 采矿或采石 |
| ------E21C37/00 | 具有装载或无装载的其他开采方法或装置 |
| --------E21C37/04 | .用带有以机械方法挤压钻孔壁的部件的装置 |