E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 19/086 (2006.01) E21B 45/00 (2006.01)
Patent
CA 2519676
The invention relates to a telescopic feed beam for a rock drill and to a method of measuring a travel length. The pressure surface of a piston (11b) in a feed cylinder (11) of the feed beam is twice as large as the pressure surface of a piston (6b) in a feed extension cylinder (6). Furthermore, the feed beam comprises a flow indicator (19) for measuring the volume flow rate of hydraulic fluid fed and/or discharged, and thereby the travel length.
L'invention concerne une poutre de guidage télescopique pour perforatrice pour roches et une technique de mesure de la course de la perforatrice. La surface de pression d'un piston (11b) dans un vérin d'alimentation (11) de la poutre de guidage est deux fois plus importante que la surface de pression d'un piston (6b) d'un vérin-rallonge d'alimentation (6). De plus, la poutre de guidage comprend un indicateur d'écoulement (19) permettant de mesurer le débit du liquide hydraulique débité ou déchargé et, par là même, la longueur de la course.
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
Sandvik Mining And Construction Oy
Sandvik Tamrock Oy
LandOfFree
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