VIBRATORY PILE DRIVER Russian patent published in 1997 - IPC

FIELD: vibratory driving of piles used in construction of industrial-civil, transport and other objects. SUBSTANCE: hydraulic pump in the vibratory pile driver is furnished with a power governor and a safety valve, hydraulic motor with a matching reduction gear installed between the hydraulic motor shaft and the shafts with unbalanced masses. The maximum driving capacity of the vibratory pile driver is attained when it operates in the range of limiting of power N within W_min≅ W ≅ W_max of rotary speeds of unbalanced masses with the safety valve closed and W ≥ 0 with the valve open to matching of the operating condition parameters and characteristics of ground resistance ensured by setting of the matching reduction gear with gear ratio i determined from offered formula. EFFECT: enhanced efficiency. 4 dwg