Vibrating machine for plunging piles, thin-walled clindrical casings and plates

Claim 1

A VIBRATING ELECTRO-MECHANICAL MECHANISM OF VERTICALLY DIRECTED ACTION FOR DRIVING MEMBERS SUCH AS PILES, RODS, THIN-WALLED CASINGS AND LARGE-SIZE PLATES, COMPRISING A BODY, MEANS FOR RIGIDLY CONNECTING THE BODY TO THE HEAD OF THE MEMBER TO BE DRIVEN, A HORIZONTALLY DISPOSED ELECTRIC MOTOR RIGIDLY MOUNTED ON THE BODY, A SHAFT FOR THE MOTOR, A FIRST PAIR OF HORIZONTAL ROTATABLE SHAFTS MOUNTED IN SPACED PARALLEL RELATIONSHIP WITHIN THE BODY, A SECOND PAIR OF HORIZONTAL ROTATABLE SHAFTS MOUNTED IN SPACED PARALLEL RELATIONSHIP WITHIN THE BODY BELOW SAID FIRST PAIR OF SHAFTS, A DRIVE TRANSMISSION MEANS INCLUDING A REDUCTION GEAR OPERABLY COUPLED TO THE MOTOR SHAFT AND TO THE FIRST AND SECOND PAIRS OF SHAFTS FOR ROTATING THE PAIRS OF SHAFTS IN OPPOSITE DIRECTIONS AND AT SIMILAR SPEED, ECCENTRIC WEIGHTS SECURED TO EACH PAIR OF SHAFTS, SAID ECCENTRIC WEIGHTS BEING DISPOSED SYMMETRICALLY ABOUT THE VERTICAL AXIS EXTENDING THROUGH THE CENTER OF GRAVITY AND ONE OF THE AXES OF SYMMETRY OF THE MEMBER IN PLAN AND HAVING EQUAL STATIC MOMENTS IN RELATION TO THE CENTER LINES OF THE SHAFTS WITH THE INERTIA PLANE OF THE WEIGHTS BEING PARALLEL TO THE AXIS OF ROTATION OF THE WEIGHTS, SAID ECCENTRIC WEIGHTS ROTATING IN THE SAME DIRECTIONS AND SPEED AS SAID SHAFTS IN THE SAME DIRECTIONS AND SPEED UTILIZING THE RESONANCE EFFECT TO IMPART TO THE MEMBER TO BE DRIVEN FORCED VIBRATIONS OF 3-7.5 CYCLES PER SECOND WHICH IS THE EQUIVALENT OF THE NATURAL FREQUENCIES OF SAID BODY, MOTOR, PAIRS OF SHAFTS, DRIVE TRANSMISSION MEANS, ECCENTRIC WEIGHTS AND THE MEMBER TO BE DRIVEN UNDER VARYING CONDITIONS, AND THE STATIC MOMENT OF THE ECCENTRIC WEIGHTS ABOUT THE SHAFTS ACHIEVING AN AMPLITUDE OF FORCED VIBRATIONS IN IDLING FROM 1-3 CM.