| 主权项 |
1. A machine for the drilling of the ground comprising:
a guide tower along which slides a maneuvering group for maneuvering of a battery of drilling rods, said maneuvering group moves along guides of the tower, the guides including an openable guide arranged in fixed or slidable position in a lower part of the guide tower; said maneuvering group comprising a sleeve with inner vertical listels that conveys rotation to a tube; a lower part of said tube being engageable to at least one of the drilling rods having a digging tool or is directly engageable to a digging tool; said tube being a telescopic tube and comprises: an external extended element, an intermediate extended element and an inner extended element, said intermediate element and said inner element being coaxial with the external extended element; said inner element being fixed with respect to the external extended element and the intermediate element being extractable with respect to the other two elements; said external element of the tube being provided with external torque transmission listels all substantially an entire length of the external element, the external torque transmission listels correspond with the inner vertical listels of the sleeve of the maneuvering group; said tube extends at least partially over the sleeve of the maneuvering group; said tube working with an inner fluid under pressure flowing inside at least one of the extended elements; and an openable guide retaining the rod battery to which the intermediate element is constrained, in extracting maneuvers and/or closing maneuvers of the telescopic tube. |
