| 摘要 |
PURPOSE: A hydraulic oil supply device of a variable-pitch propeller propulsion apparatus is provided to efficiently operate a cylinder for a pitch control by simultaneously supplying and discharging hydraulic pressure. CONSTITUTION: A hydraulic oil supply device of a variable-pitch propeller propulsion apparatus comprises an oil distribution block(100). The oil distribution block comprises first and second hydraulic lines(110,120) and first and second pilot valves(150,160). The first hydraulic line is connected to the hollow(310) of a pitch control rod(300) and supplies and discharges hydraulic oil to one side of a chamber(210). The second hydraulic line supplies and discharges hydraulic oil to the other side of the chamber through an insertion hole(230). The first pilot valve is connected to the first hydraulic line through a first pilot line(130) and opens the second hydraulic line using the pressure of hydraulic oil flowing through the first hydraulic line. The second pilot valve is connected to the second hydraulic line through a second pilot line(140) and opens the first hydraulic line using the pressure of hydraulic oil flowing through the second hydraulic line. |
