E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 15/04 (2006.01) E21C 11/00 (1990.01)
Patent
CA 2085471
2085471 9200439 PCTABS00010 Vertical drilling boom for a rock drilling equipment comprising a vertical boom (2) mounted at its lower end turnably about a horizontal shaft (6) with respect to a carrier (1) of the rock drilling equipment, the vertical boom (2) comprising two boom portions (2a, 2b) mounted longitudinally slideably with respect to each other and an actuating device (2c) for displacing the boom portions (2a, 2b) with respect to each other to adjust the length of the boom (2); at least one actuating device (7a, 7b) for turning the boom (2) about the shaft (6); a boom head (3) for turning a feeding beam (12) of a rock drilling machine mounted to the boom (2) about a shaft (5) transverse, preferably perpendicular, to the longitudinal axis of the boom (2); and means (5a, 5b) for turning the boom head (3). In the invention, pressure fluid for operating the rock drilling machine and actuating devices associated with it is passed from the carrier (1) to the rock drilling machine and its actuating devices and back to the carrier (1) through conduits (16a to 18a, 16b to 18b) leading through the boom head (3) of the vertical boom (2).
Swabey Ogilvy Renault
Tamrock Oy
LandOfFree
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