| 摘要 |
An opening device for drill rods for an extension rod drilling equipment, which device comprises a drilling machine (2) displaceable along a feeding beam (1), a stationary drill rod retaining centralizer (3) positioned on the drilling axis (A) for the drill rod, and a drill rod gripping centralizer (4) positioned between the retaining centralizer and the drilling machine. In order to speed up the disconnection of the drill rods, and in order to simplify the structure, the retaining centralizer is provided with a rotating mechanism (15) for the rotation thereof and the gripping centralizer is connected to an actuating device (22) for the displacement thereof in the direction of a drilling axis (A). |
