发明授权
- 专利标题： Rock drill equipment having a mechanized drill bit exchange
- 专利标题（中）： 钻机设备具有机械化的钻头交换功能
-
申请号： US545450申请日： 1975-01-30
-
公开(公告)号： US3976149A公开(公告)日： 1976-08-24
- 发明人: Sven Granholm , Borje Meijer
- 申请人： Sven Granholm , Borje Meijer
- 申请人地址： SW Skelleftea
- 专利权人： Linden-Alimak AB
- 当前专利权人： Linden-Alimak AB
- 当前专利权人地址： SW Skelleftea
- 优先权： SW1454/72 19720208
- 主分类号： E21B19/18
- IPC分类号： E21B19/18 ; E21C19/04
摘要：
At a rock drill, preferably most forwardly on its frame, a magazine with drill bits is arranged. When a drill bit has been worn such that it must be exchanged, the drill rod is retracted so much that the worn drill bit arrives at the magazine. By special means at the magazine the worn bit is unscrewed from the rod and replaced by a new bit from the magazine.
公开/授权文献
信息查询
