E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 19/24 (2006.01) E21B 7/28 (2006.01) E21C 25/58 (2006.01)
Patent
CA 2714983
A slotting device (100) to be used with a rock drilling apparatus (1) to drill closely together a plurality of parallel intersecting holes so as to form a slot in a brittle material, such as rock, masonry or concrete. The slotting device (100) includes a guide portion (110) connected to a body portion (120) with at least one strut (130). The guide portion (110) is disposed in a previously drilled hole, and the body portion (120) and a rotary percussion tool (7) mutually define a variable volume chamber (140) that contains flushing fluid that damps transmission of impact stress waves from a percussion device (4) of the drilling apparatus (1) to the slotting device (100).
Dispositif de rainurage (100) qui sutilise avec un appareil de forage de roche (1) pour forer étroitement ensemble une pluralité de trous dintersection parallèles de manière à former une rainure dans un matériau cassant, tel que de la roche, de la maçonnerie ou du béton. Le dispositif de rainurage (100) comprend une partie guidage (110) raccordée à une partie corps (120) avec au moins un support (130). La partie guidage (110) est disposée dans un trou préalablement percé, et la partie corps (120) et un outil de percussion rotatif (7) délimitent mutuellement une chambre de volume variable (140) qui contient un fluide de rinçage qui amortit la transmission dondes de contrainte aux chocs provenant dun dispositif de percussion (4) de lappareil de forage (1) du dispositif de rainurage (100).
Norton Rose Or S.e.n.c.r.l. S.r.l./llp
Sandvik Mining And Construction Oy
LandOfFree
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