| 摘要 |
PROBLEM TO BE SOLVED: To realize a cost reduction in a hydraulic control system, by reducing the number of linear solenoid valves required fro a switching operation of a plurality of hydraulic actuators. SOLUTION: A check valve 78, for selectively switching the hydraulic actuators 45, 46 which serve as objects fed with a hydraulic fluid, is provided between a plurality of hydraulic actuators 45, 46 and solenoid valves 81, 82 for controlling feeding of the hydraulic fluid to the hydraulic actuators 45, 46. The check valve 78 is driven by a pilot valve 83. When the check valve 78 is off, a hydraulic pressure is fed to the hydraulic actuator 45 and when the check valve is on, hydraulic pressure is fed to the hydraulic actuator 46. The operating direction of the hydraulic actuators 45, 46 is controlled by turning on/off of the solenoid valves 81, 82.
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