| 摘要 |
PROBLEM TO BE SOLVED: To provide a work machine capable of achieving the longer life of each hydraulic motor by preventing the occurrence of a surge pressure without providing a relief circuit.SOLUTION: The work machine includes left and right hydraulic motors 7 connected to wheels, respectively, a hydraulic pump 9 for supplying operating oil to the left and right hydraulic motors 7, left and right duct lines 15a, 15b branching from a supply duct line 14 where the hydraulic pump 9 is arranged, at its middle, and leading to the left and right hydraulic motors 7a, 7b, a flow divider 18 for adjusting the flow amount of the operating oil, a differential lock duct line 21 connecting the left and right duct lines 15a, 15b, a differential lock valve 22 for permitting/interrupting the passage of the operating oil through the differential lock duct line 21, input equipment for commanding the changeover of the differential lock valve 22 into a passage position or an interruption position, and a controller for performing control to permit the changeover of the differential lock valve 22 into the interruption position only when a vehicle body is stopped or in a slow-speed condition. |
