| 摘要 |
<p>Drill wagon for transporting and erecting rock drilling rigs with a mobile undercarriage and an obliquely upwardly directed boom secured to the undercarriage. A drill feed frame is pivotally mounted to the free end of the boom. One or more support legs capable of being raised and lowered hydraulically are mounted to the undercarriage. The feed frame is adapted to be pivoted from side to side, the undercarriage is supported by two wheel bogies which are pivotally mounted approximately at the centre of their length and which are pivotable about an axis transversely of the longitudinal axis of the undercarriage. The bogies are pivotable independently of one another by means of respective motors, preferably hydraulic cylinders.</p> |
