| 摘要 |
PURPOSE:To improve the safety in travelling and stoppage by detecting the cycle speed and the cycle height and inputting said values into the fluid feeding and discharging valve control part for controlling the cushion unit for varying the distance between an axle and a chassis, so that the height of a cycle may be reduced during stoppage and increased during travelling. CONSTITUTION:A cycle speed sensor 27 detects the cycle speed, and when the cycle speed is below the set value, the control part 22 opens a solenoid valve 14. Then, the air in a cushion unit 10 and valves 10 and 12 is discharged from an air opening port 19 to reduce the cycle height. Then, high and low cycle height sensors 20 and 20' contract to the low cycle height position, and the valve 14 is closed through the control part 22, and the cycle is maintained at low position. When the cycle speed 27 becomes above the set value in travelling, a valve 13 is opened through the control part 22, and the cushion unit 10 is extended, and the cycle height is increased. When the cycle height set high is detected, the valve 13 is closed through the control part 22, and the cycle height is maintained at high position. Thus, the safety in travelling and stoppage can be improved by facilitating getting on and off the cycle. |
