| 摘要 |
<p>Rock drilling rig comprising a carrier (1) provided with a service platform (7). The platform is arranged on a service boom (6). The service boom is provided with a number of relative to each other movable boom sections (33-36). The service platform (7) is by means of a parallelogram mechanism (22) connected to the service boom (6). The service platform (7) is arranged to the side of the swing plane of the parallelogram mechanism (22) so that collision between the service platform and the service boom is avoided.</p> |
