| 摘要 |
An oil-hydraulic system of a forklift truck is provided to reduce the pressure loss and heat generation by minimizing a recursive structure of output flux in the driving. An oil-hydraulic system of a forklift truck comprises: a hydraulic pump(100) discharging fluid; an inflow controlling valve shelf(200) including a relief valve(220), installed between a discharge hydraulic line and a drain hydraulic line(700); a solenoid valve(210) installed at one side water pressure part of the relief valve in order to control the relief pressure of the relief valve; a lifting control valve shelf(300) successively connected and arranged to the downstream of the inflow controlling valve shelf; and a controller controlling the operation of the solenoid valve, auxiliary spool displacement sensor(500a, 500b, 600a, 600b), lifting spool displacement sensors(300a, 300b), tilting spool displacement sensors(400a, 400b), a tilting control valve shelf(400) and a plurality of assistant control valve shelves(500, 600). |
