| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a working vehicle capable of carrying out speed up of the working speed of driving cylinders for driving a working device at both times for extending and constricting. <P>SOLUTION: The working vehicle has the working device mounted on an undercarriage and the two driving cylinders 85, 86 for driving the working device. The working vehicle has the switching valves 83, 84 as a circuit switcher formed so as to be able to switch a middle speed circuit for supplying compressed oil to both driving cylinders 85, 86 from a hydraulic pump 80 and a high speed circuit for supplying compressed oil only to the driving cylinder 86 from the hydraulic pump 80, both driving cylinders 85, 86 are directly or indirectly connected such that telescopic actions are synchronized. <P>COPYRIGHT: (C)2012,JPO&INPIT</p> |
