BORE-HOLE DRIVING DEVICE Russian patent published in 1998 - IPC

FIELD: drilling equipment. SUBSTANCE: this relates to drilling water wells in loose grounds. For higher productivity and simpler design, device has body, striking mechanism with striker, rod which is connected with rope. Also provided is electromagnetic clutch in striking mechanism body in the form of linear electric motor for coupling with casing pipe. Electromagnetic clutch is electrically connected with unit of its synchronization with striking mechanism. In addition, striker above striking head is made in the form of system of resilient bodies capable of displacement in lateral direction. EFFECT: higher efficiency. 1 cl, 2 dwg