| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a hydraulic circuit for straight travel for improving operability, by preventing deviant travel by generation of an overload of a work device such as a boom, when performing composite operation with travel. <P>SOLUTION: This hydraulic circuit is provided with first and second hydraulic pumps, a left side travel motor and a first work device connected to the first hydraulic pump 15, a plurality of selector valves 12 arranged in a flow passage 1 of the first hydraulic pump and controlling a hydraulic fluid supplied to the left side travel motor or the first work device in switching, a right side travel motor 3 and a second work device connected to the second hydraulic pump 16, a plurality of selector valves 11 arranged in a flow passage 9 of the second hydraulic pump and controlling the hydraulic fluid supplied to the right side travel motor or the second work device in switching, and a straight travel valve 4 arranged in the flow passage of the second hydraulic pump, respectively supplying the hydraulic fluid delivered from the first hydraulic pump to the left side travel motor and the right side travel motor and respectively supplying the hydraulic fluid delivered from the second hydraulic pump to the first work device and the second work device, in switching. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
