| 摘要 |
PROBLEM TO BE SOLVED: To provide a hydraulic device for a working vehicle, which is capable of preventing leakage of pressure oil, when a hydraulic pressure tube or the like is attached, from a hydraulic actuator to a tank port, in the hydraulic device which is equipped with a port block for drawing out the pressure oil, attached on the side of a transmission case, and the tank port for directly returning the pressure oil in the hydraulic actuator into the transmission case which is installed in the port block. SOLUTION: The hydraulic device for the working vehicle, which is equipped with the port block 21 attached to the side of the transmission case 11 to take out the pressure oil, and the tank port 32 provided at the port block 21 for directly returning the pressure oil in the hydraulic actuator 6 into the transmission case 11, is provided with a check valve 34 for controlling the flow of the pressure oil from the inside of the transmission case 11 to the tank port 32. COPYRIGHT: (C)2009,JPO&INPIT
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