| 摘要 |
PURPOSE:To make it possible to reduce any wear and tear of a control unit and still to stabilize running for improving comfortability by operating an elevation control means when right or left tilt angle continuously gets out of a set up angle over a set up time for operation delay and providing an adjusting means for set up time. CONSTITUTION:Inputting a detected value X from a tilt angle detecting sensor S6 and a set up value Y calculated by a tilt angel setter P1 for calculating an argument F after comparing both to each other. If the argument F is + and larger than the width of a dead zone, it is checked with a potentiometer P2 whether the state is continued or not over a control operation delaying set up time T. And when the state is continued, in the case of a right lower limit switch S5 ON a left upper side output LU for lowering a left crawler running device 1 in relation to a running machine body V and raising the running machine body V is output. And in the case of the switch S5 OFF, a right lower side output RD for raising a right crawler running device in relation to the running machine body V and lowering the running machine body V is output. |
