| 摘要 |
PROBLEM TO BE SOLVED: To solve such a problem that there is a possibility of damaging a wheel ground reaction force support means such as an axle by a wheel ground reaction force, caused by increase in overturning moment rearward of a boom to increase a ground contact reaction force while a telescopic boom is contracted to the maximum and elevated to the maximum and a boom rotation position is directed to a side. SOLUTION: The control device of a track crane includes: a limited ground reaction force value storage means B storing a limited ground reaction force value responding to the strength of the wheel ground reaction force support means 11; a present ground reaction force value acquisition means C acquiring a present ground reaction force value added to a wheel 13 in a present crane work state; a comparison means D comparing the present ground reaction force value with the limited ground reaction force value; and a ground reaction force increase side operation restriction means E restricting operation on a side where the ground reaction force value applied to the wheel 13 is increased with respect to a various types of operating actuators of the crane when the present ground reaction force value reaches the limited ground reaction force value. The ground reaction force value applied to the wheel does not exceed a range to be responded by the strength of the wheel ground reaction force support means 11. COPYRIGHT: (C)2010,JPO&INPIT |
