| 摘要 |
PROBLEM TO BE SOLVED: To suppress change in the cab attitude in normal running by optimizing the vertical accelerations of the coupler part of a tractor head and the tail of a trailer. SOLUTION: A roll displacement amount, pitch displacement amount, and bounce displacement amount of a cab are determined by a cab displacement calculating means from the signals given by car height sensors 28 and 31 installed on the axle and at the corners of the cab, while the roll displacement speed, pitch displacement speed, and bounce displacement speed of the cab are determined by a cab displacing speed calculating means from the signals given by acceleration sensors 32-34 installed at the cab, and a trailer input is determined by a trailer input calculating means from signals given by the above-mentioned car height sensors 28 and 31 and vertical acceleration sensors 35 and 35a installed at the coupler part and the tail of the trailer. The controlling forces to suppress the rolling, pitching, and bouncing of the cab are determined by a controlling force calculating means from the displacements of the cab, displacing speeds, and the trailer input, and the oil quantities of hydraulic actuators 19 to support the corners of the cab are increased or decreased in accordance with the controlling forces. |
