| 摘要 |
An improved axle control apparatus for industrial vehicles. A multi-movement hydraulic cylinder is provided at each end of a rear axle to couple the rear axle with a body frame. Each cylinder has a pair of oil chambers, which are defined by a piston. The oil chambers of the same cylinder are connected with each other by an oil line. An electromagnetic valve is located in each oil line. When the electromagnetic valves open the lines, oil flow between the chambers of the same cylinders is permitted. This permits the pistons to move. When the electromagnetic valve closes the lines, oil flow between the chambers of the same cylinders is prohibited. This locks the pistons. When the pistons in both cylinders are movable, the rear axle is permitted to tilt relative to the body frame. The rear axle is locked by locking the piston of at least one of the cylinders. Thus, if one of the cylinders is malfunctioning, the rear axle is locked by the other cylinder. The reliability of the apparatus is improved accordingly.
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