| 摘要 |
The apparatus includes a store constituted by an upwardly-open, rectangular, box-shaped container (12) holding a plurality of drill rods (26) piled on one another. One longitudinal edge (13) of the container (12) has a plurality of saddles (14) for temporarily supporting a rod (26) to be transferred after it has been taken from the container (12) and placed in the saddles (14). The apparatus also includes a straight bar (27) with two coplanar radial arms (28. 29) located at its ends and provided with gripping members (30,31, 32,33) for circumferentially engaging and disengaging a drill 4 rod (26). The bar (27) is supported so as to be rotatable about its own axis by a sleeve (46) which is fixed to the wall of the rod container (12) by means of a pin (47) with an axis of rotation perpendicular to the axis of the bar (27) and also perpendicular to the longitudinal extent of the rod container (12). Hydraulic cylinders are provided for displacing (60) the bar (27) with the radial arms (28, 29) angularly about its own axis, for displacing (52) the support sleeve (46) for the bar angularly about the pin (47) connecting it to the rod container (12) and for opening and closing (34,35) the gripper members (30, 31, 32, 33) carried by the radial arms (28, 29). With this apparatus, a drill rod (26) placed in the saddles (14) on the edge (13) of the container (12) is picked up by the arms (28, 29) fixed to the bar (27) and brought into line with the drill head (6) of the machine or vice versa. |
