E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 19/14 (2006.01) E21B 19/18 (2006.01) E21B 19/20 (2006.01)
Patent
CA 2722260
The invention relates to a rock-drilling unit, drill bit changer, and method for changing a drill bit.The front part of a feed beam (5) has a retainer (14) and a drill bit changer (15) connected thereto.In changing drill bits (14), a normal retainer fastened to the feed beam is utilised, when the connection between the drill bit and drill rod (11) is opened.The changer also comprises a maga- zine (16) for storing drill bits and a transfer device (18) for transferring the drill bits between the retainer and magazine.
L'invention concerne une unité de perforation de rochers, un changeur de trépan et un procédé pour changer le trépan. La partie avant d'une poutre d'alimentation (5) est pourvue d'un dispositif de retenue (14) et d'un changeur de trépan (15) qui est connecté à celui-ci. Lorsque l'on change les trépans (14), on utilise un dispositif de retenue normal qui est attaché à la poutre d'alimentation, lorsque la connexion entre le trépan et une tige de forage (11) est ouverte. Le changeur comprend également un magasin (16) pour stocker des trépans, et un dispositif de transfert (18) pour transférer les trépans entre le dispositif de retenue et le magasin.
Siltala Hannu
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
Sandvik Mining And Construction Oy
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