| 摘要 |
PURPOSE: A hydraulic pressure generating device is provided to reduce energy consumption as the energy consumption is controlled according to the level of load. CONSTITUTION: A hydraulic pressure generating device comprises a forward body(1) and a rearward body(2). Multiple hydraulic check valves(22) are arranged between a secondary pressure increasing chamber(52) and a primary pressure increasing chamber. A check valve for discharging residual pressure(16) is arranged between a residual pressure storage chamber(92) and a first pneumatic pressure operating chamber(56). A valve spool which selectively touches a secondary pressure increasing piston(7) selectively opens and closes a pneumatic path(60) and a second pneumatic pressure operating chamber and is controlled by a pneumatic path(90) and a third pneumatic pressure operating chamber. A rearward pressure increasing piston(4) is arranged between a rearward pressure increasing chamber(64) and a pneumatic pressure operating chamber(68) and has a working oil storage chamber(72). |
