发明公开
EP0126046A1 A method of rock bolting, and a device, and a roof bolting apparatus
失效
Ankerausbauverfahren，Gerätdafürund Ankerausbauvorrichtung。
- 专利标题： A method of rock bolting, and a device, and a roof bolting apparatus
- 专利标题（中）： Ankerausbauverfahren，Gerätdafürund Ankerausbauvorrichtung。
-
申请号： EP84850123.5申请日： 1984-04-12
-
公开(公告)号： EP0126046A1公开(公告)日： 1984-11-21
- 发明人: Lundmark, Signar Edvin Alexis , Persson, Karl Enar
- 申请人： Atlas Copco Aktiebolag
- 申请人地址： Nacka S-105 23 Stockholm SE
- 专利权人： Atlas Copco Aktiebolag
- 当前专利权人： Atlas Copco Aktiebolag
- 当前专利权人地址： Nacka S-105 23 Stockholm SE
- 代理机构： Grundfelt, Erik Gunnar
- 优先权： SE8302025 19830412
- 主分类号： E21D20/02
- IPC分类号： E21D20/02
摘要：
In roof bolting, when an anchor rod (24) is to be inserted in a borehole (26) in the rock, a cement grout is ejected as a jet from a nozzle (22) located at the mouth of the borehole to partially fill the hole before the rod is forced into the borehole. The jet of grout should have such a velocity that it reaches the bottom of the borehole. A grout pump (45,60) forces the grout through a hose (28) to the nozzle (22).
公开/授权文献
信息查询
