| 摘要 |
The invention relates to a boom arrangement for a rock drilling apparatus, which arrangement comprises at least one boom (1) and an actuator (2), e.g. a passenger cage, arranged to the free end of the boom. Further, the boom (1) comprises at least two boom parts (1a, 1b) articulated pivotably in respect of each other. According to the inventive idea, the first boom part (1a) is articulated by means of the first articulation (3a) pivotably substantially in a horizontal direction. The second boom part (1b) in turn is arranged to the end of the first boom part (1a), which second boom part can be turned according to an embodiment of the invention both vertically and horizontally in respect of the first boom part (1a).
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