B - Operations – Transporting – 25 – D
Patent
B - Operations, Transporting
25
D
B25D 9/16 (2006.01) B25D 9/18 (2006.01) E21B 1/26 (2006.01)
Patent
CA 2661228
A percussive device including, inside a machine housing (3), a reciprocally moveable percussive piston (2), the movement of which being controllable through a control valve (5), which is arranged to alternatively connect a chamber to a pressure source and to low pressure in dependence of a signal describing the axial position of the percussive piston, wherein valve means (16) are arranged to allow adjustment of in which axial position of the percussive piston said signal is transmitted, through respectively opening and blocking of connection between one or a plural of said control channels (10,11,12,13) and the control valve. The invention also concerns a rock drilling machine and a method.
L'invention concerne un dispositif à percussion comportant, à l'intérieur d'un boîtier de machine (3), un piston à percussion à mouvement alternatif (2) , dont le déplacement peut être commandé par une soupape de commande (5) qui est agencée de façon à connecter, alternativement, une chambre à une source de pression et à une basse pression en fonction d'un signal indiquant la position axiale du piston à percussion, où les organes de soupape (16) sont agencés pour pouvoir effectuer un réglage de la position axiale du piston à percussion où le signal est transmis, à travers respectivement l'ouverture et le blocage de la connexion entre un ou une pluralité desdits canaux de commande (10,11,12,13) et la soupape de commande. L'invention concerne également une perforatrice de roches et un procédé.
Atlas Copco Rock Drills Ab
Fetherstonhaugh & Co.
LandOfFree
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