| 摘要 |
An on-road hopper trailer has a hopper bin with front and rear walls, a rear ladder frame mounted on at least one axle extending forward to the rear wall of the bin, and a base frame mounted on the ladder frame. The base frame extends about the hopper bin and has four members each extending inwardly from the periphery of the bin. The hopper bin has a rectangular top frame from which a plurality of struts extend to the base and ladder frames to provide sufficient strength and rigidity to the structure.
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