| 摘要 |
<p>A method and an arrangement for controlling the supply of air into a rock drilling machine. In the method, the air supply of an air compressor (9) in a power unit operated by a diesel engine (3) is adjusted so that when the percussion pressure of the percussion device (5) of the rock drilling machine is high, the amount of air supplied by the compressor (9) is small, and vice versa. In the arrangement, the pressure fluid pump (8) of the hydraulic motor (10) of the compressor (9) is an adjustable-displacement pump (8), the volume flow of the pressure fluid supplied by the pump (8) being adjusted inversely proportionally to the pressure of the supply conduit (4) of the percussion device (5) of the rock drilling machine.</p> |
