Single valve gas -liquid formula hydraulic pile driving hammer

The utility model relates to a single valve gas -liquid formula hydraulic pile driving hammer. Its technical scheme is: including joining in marriage the oil hold, single valve core two -position three way electro -hydraulic reversing valve, the gas storage cabin, two medium hydraulic pressure jars, three high -pressure accumulator, three low pressure energy storage ware, lead oily steel pipe for two, the distribution cabin, when solenoid valve control valve core piston shifts up, the oil feed passageway of hammer and the center intercommunication of single valve core two -position three way electro -hydraulic reversing valve, the return path of hammer is sealed by the case, the hydraulic oil that comes from oil pump and high -pressure accumulator is through leading oily steel pipe to going the beam hanger chamber that the distribution cabin got into two medium hydraulic pressure jars, it goes upward to promote the pneumatic cylinder piston, piston rod pulling hydraulic hammer hammer core goes upward, the action of hammer is proposed in the realization. The beneficial effects are that: simplified the structural design who joins in marriage the oil hold, made processing simpler, the design of single valve core two -position three way electro -hydraulic reversing valve, the interval that utilizes the spool displacement to keep apart oil feed and oil return has guaranteed that both can instantaneously not communicate, make hammer work more reliable, it is more convenient to maintain.