| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a hydraulic circuit of a road-rail vehicle, which does not require connection of an emergency hose even when both of a main pump and an electric pump break down. <P>SOLUTION: The hydraulic circuit includes a plurality of oscillating cylinders 120a to 120d of a work device of a road-rail vehicle, a main pump 100, an emergency electric pump 101, a manual pump 102, and a control valve device 300 for supplying pressure oil discharged from the main pump 100 to each of the oscillating cylinders 120a to 120d. A main pipe line 146 between the control valve device 300 and the main pump 100 is provided with a cutoff cock 140. A sub pipe line 145 connects the manual pump 102 to a portion between the cutoff cock 140 and the control valve device 300, and the sub pipe line 145 is provided with a connection cock 151. <P>COPYRIGHT: (C)2013,JPO&INPIT |
