Drill boom arrangement

Details Drill boom arrangement Drill boom arrangement

E - Fixed Constructions

21

B

255/35

E21B 15/04 (2006.01)

Patent

CA 1101835

Abstract A hydraulic drill boom arrangement for drifting and tunnelling comprises a boom proper (10) that is universally pivotably carried by a support plate (13) and carries a feed beam (40) for a rock drill (41) at its outer end. Two hydraulic cylinders (16, 17) are coupled between the suppport plate and the boom and located on each side of the boom so that both cylinders are loaded by the weight of the boom, which makes the boom very stable in all positions

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