HEIGHT ADJUSTING DEVICE FOR AIR SUSPENSION VEHICLE

摘要

PROBLEM TO BE SOLVED: To improve durability by preventing a degradation in battery performance due to battery exhaustion and over-discharge in an air suspension vehicle that lowers the height to a kneeling height when a passenger gets on and off it. SOLUTION: Air piping connecting a compressed air source 16 and air cylinders 26F and 26R interposed in sensing rods 28F and 28R of leveling valves 14F and 14R has a first solenoid valve 44 in an upstream part and a second solenoid valve 46 in a downstream part. The first solenoid valve 44 is designed to connect up the line when set on and to interrupt the line when set off, and the second solenoid valve is designed to connect pressure chambers of the air cylinders to the atmosphere when set on and to connect up the line when set off. Even if a driver erroneously operates a kneeling switch into a kneeling operation side in a kneeling state, a further height lowering movement is stopped.