| 摘要 |
<p>When a locking member is switched from a locked position to a released position, a lock valve switching unit switches a lock valve from a locked state to a released state. A misoperation monitoring unit keeps the lock valve in the released state if the pilot pressure is greater than or equal to a prescribed pressure when the elapsed time from when the locking member switches from the locked position to the released position is greater than or equal to a first prescribed time. The misoperation monitoring unit switches the lock valve to a locked state if, when the elapsed time is less than the first prescribed time, the pilot pressure is greater than or equal to the prescribed pressure and the time duration thereof is greater than a second prescribed time. The misoperation monitoring unit allows the lock valve to be switched by the lock valve switching unit if, when the elapsed time is less than the first prescribed time, the pilot pressure is greater than or equal to the prescribed pressure and the time duration thereof is less than or equal to the second prescribed time.</p> |
