| 摘要 |
PURPOSE: A device for automatically actuating a hydraulic jack is provided to prevent an accident by conveniently operate the hydraulic jack. CONSTITUTION: A device for automatically operating a hydraulic jack comprises an oil chamber(11) mounted on a lower portion of a hydraulic jack; an oil return pipe(101) installed on the oil chamber; a pressure block(300) supplying air pressure; a chamber plate(110) moved by resilient force of a spring(111); a compressed rod(120) mounted on a front end portion of the chamber plate; first and second valves(V1,V2) inletting or discharging the oil by being formed on the oil chamber; an inlet port(301) receiving air from an air block(200); a spool(310) arranged in the pressure block; a through hole(311) formed on a rear portion of the spool; and an actuating line(400) communicating a first operational hole(401) and a second operational hole(402).
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