| 摘要 |
PROBLEM TO BE SOLVED: To prevent load concentration on a backward rear axle due to a tilt of a vehicle body and prevent damage to a diaphragm of a forward rear axle air suspension in a self-loading vehicle equipped with air suspensions on a forward rear axle and a backward rear axle of a rear tandem axle respectively. SOLUTION: The forward rear axle and backward rear axle of the rear tandem axle self-loading vehicle are equipped with the air suspensions 20 and 21 respectively. The internal pressures of the air suspensions 20 and 21 are controlled by a solenoid valve 22 during a tilt of the vehicle body. When a load sum on the rear tandem axle is an unladen value, the internal pressure of the air suspension 20 is made a normal unladen value. Although the internal pressure of the air suspension 20 is increased as the load sum on the rear tandem axle increases, the internal pressure of the air suspension 21 is held at the normal unladen value.
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