| 摘要 |
<p>The invention provides a drill rod handling device (14) which is adapted for attachment to a drill rig assembly (10) which includes a standard rotation unit (12) and a rod holder (13) mounted on top of a feed frame (11) and which are used to feed drill rods (25) in and out of the ground. The handling device (14) comprises a carriage assembly (20) which is guided for sliding movement along slide members (19), a head assembly (24) which is designed to receive and support a drill rod (25) and to feed the drill rod longitudinally for screwing and unscrewing of the thread joint while simultaneously gripping same, a swing arm (21) pivotally attached to the carriage assembly and extending laterally therefrom, swivel attachment means rotatably mounting the head assembly (24) to the outer end of the swing arm (21) for tilt movement about a transverse axis, a swing arm actuator (38) for effecting rotation of the swing arm (21) and the head assembly (24) about a generally longitudinally axis, and a tilt actuator (42) for effecting tilt of the head assembly (24), the arrangement being such that a drill rod (25) when loaded onto the head assembly (24) at a side low position, can be bodily moved to a loading position on top of the feed frame and axially aligned with the drill string.</p> |
