| 摘要 |
PROBLEM TO BE SOLVED: To provide a steering system capable of reducing the time when all the connection parts obstruct mutually in comparison with a conventional system. SOLUTION: This steering system sets a condition of an actuation system 120 in which a failure is detected to a second condition in which a cylinder is extended and contracted due to travel of a steering wing 112 for a machine body 111 and sets a condition of the actuation system which is an actuation system other than the actuation system 120 and adopts the second condition to a first condition when the failure is detected in a hydraulic system of the actuation system 120 which adopts the first condition in which the cylinder is extended and contracted by hydraulic fluid by supplying and discharging hydraulic fluid corresponding to operation to an operation device in a supply and discharge part. COPYRIGHT: (C)2004,JPO
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