| 摘要 |
PURPOSE:To improve accuracy of posture control of the captioned vehicle, by setting inoperative or delayed status in response to start, stop and shocked condition of said vehicle, with regard to a control system which automatically operates a wheel-frame relative level adjusting mechanism according to the indication of a detector of vehicle posture in relation to the ground. CONSTITUTION:Control valves V1, V2, V3 which drive cylinders C1, C2, C3, for lifting and lowering right and left front wheels and one rear wheel relative to the vehicle frame are under operation control of a control system 13 based upon results of detection by the gravity type first detector 12 which detects a posture of the vehicle relative to the ground. A switching device 23 places said control system 13 in inoperative condition within the first set time after obtaining information from the second detector 19 which detects start or stop of the vehicle. Further, after elapse of the first set time, the control system 13 recovers its operative condition and the third detector 24 detects this elapse of time and puts a control operation changing device 29 in operation. Said changing device 29 is operated, only within the second set time after its operation, so that start of the control system 13 in response to a signal from the first detector 12 is delayed as compared with the usual starting time. |
