| 摘要 |
A pair of upright arms are connected at their lower ends to an anchoring beam that lies on the floor after the truck is driven onto a ramp. The front truck axle is positioned below the top ends of the upright arms, which are then joined by a pressure distributor located above the axle to form an upright arm assembly. A hydraulic ram presses upwardly against the axle, which is restrained by the pressure distributors, thereby bending the axle to align the wheels. A system of countersunk apertures and mating conical frustrum fittings and bushings distribute the resulting forces more evenly throughout the apparatus, thereby preventing bending of the upright arms.
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