| 摘要 |
A wheeled support structure reversibly deployable from a stowed condition on the bed of a trailer to aid in rolling support of a load thereupon is provided. The support structure includes a frame, pivotable through a range of motion exceeding 90 degrees and having forward and rearward portions, and an actuator assembly capable of reversibly deploying the frame from a stowed condition on the bed of the trailer. The rearward frame portion includes a tag axle assembly and means for limiting energy transfer from the tag axle assembly to the frame as when the wheeled support structure is deployed to aid in rolling support of a load being hauled by the trailer. The actuator assembly cooperatively links the trailer to the forward portion of the frame.
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