| 摘要 |
<p>PURPOSE:To perform the work and travel motion at the same time by connecting a hydraulic pump to hydraulic actuators for travel motion connected to a second valve group via a second direction-switching valve and a first switching valve which enables the flow to branch. CONSTITUTION:Hydraulic actuators for travel motion 11 and 12 are connected to first and second valve groups 15-20, respectively, and a hydraulic pump 21 which supplies oil to the first valve group 15-17 via a switching valve 42 which changes over the flow direction of working oil and a first valve 41 which enables the flow to branch. Thereby, the delivery oil from the hydraulic pump 21 is supplied to the actuators for travel motion 11 and 12 to enable the work and travel motion to perform at the same time. Furthermore, the flow direction of working oil supplied to the hydraulic actuator 12 is changed over by the second switching valve 42, so no only the straight travel motion but also the steering can be performed.</p> |
