To provide a hydraulic device of a mobile farm machine having simple hydraulic pipe arrangement and easily producible at a low cost.
A reducing valve 22 to reduce the pressure in a circuit to a prescribed pressure level is placed in the hydraulic main circuit 76 of the hydraulic device to guide the hydraulic oil supplied from a hydraulic pump 20 to a horizontal control valve 79 and a hydraulic lift control valve 80. The hydraulic oil depressurized by the reducing valve 22 is guided to control valves 26, 28 for the control of the hydraulic device of the mobile farm machine 1. A throttle 86 to generate a resistance in the circuit is placed before the horizontal control valve 79 and the 2nd throttle 88 is placed in an unload circuit 87 of the hydraulic lift control valve 80.
FUJIWARA JUNICHI
IKEDA MITSUHIKO
IMAI YUKINORI
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