| 摘要 |
PROBLEM TO BE SOLVED: To provide a hydraulic rolling control system ensuring troubles such as an oil leakage not to occur even if such a condition that a rolling hydraulic cylinder is out of operation elapses long. SOLUTION: The hydraulic rolling control system installing a traveling vehicle body with a working machine rollably and making a rolling control of the working machine by a rolling hydraulic cylinder is configured to be provided with: a hydraulic actuation timer for counting the period of time of feeding pressure oil to the rolling hydraulic cylinder; and a rolling sensor for detecting the actuation of the rolling hydraulic cylinder, wherein when the rolling sensor detects that the rolling hydraulic cylinder is not actuated beyond a predetermined period of time or no rolling signal is output from the system, a rolling instruction is slightly output to the rolling hydraulic cylinder. COPYRIGHT: (C)2011,JPO&INPIT
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