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Priority claimed from AU2005906216Aexternal-prioritypatent/AU2005906216A0/en
Application filed by Сандвик Интеллекчуал Проперти АбfiledCriticalСандвик Интеллекчуал Проперти Аб
Priority claimed from PCT/AU2006/001669external-prioritypatent/WO2007053893A1/en
Publication of UA97471C2publicationCriticalpatent/UA97471C2/en
A self drilling rock bolt (10) incorporating a shaft (13) and an anchoring device (23). A first end (11) of the bolt has a drill tip (16) to penetrate rock and a second end (12) is adapted to be connected to a drilling apparatus to allow rotation of, and thrust to, the bolt. A circulation passage is provided to allow fluid to be passed to the drill tip (16) and in one form a central passage (14) is formed in the shaft (13) to form part of this circulation passage. The anchoring device (23) is operative to retain the bolt when located in a drilled hole and comprises a mandrel (29) having one or more inclined external surface (29, 30) mounted to, or integrally formed with, the shaft (13) and at least one expansion element (24) overlaying the mandrel. The expansion element(s) (24) is displaced radially outwardly on a predetermined relative movement between the mandrel (29) and the element (24).
UAA200807711A2005-11-092006-11-08Self-drilling rock bolt
UA97471C2
(en)
DRILLING TOOL, SELF-DRILLING ANCHOR BOLT, DRILL BIT, ANCHOR DEVICE FOR SELF-DRILLING ANCHOR BOLT, SHAFT FOR DRILLING TOOL AND END CONNECTION FOR DRILLING TOOL
A drilling tool, a self -drilling rock bolt, a drill bit, an ancoring device for a self -drilling rock bolt, a shaft for a drilling tool and an end coupling for a drilling tool