| 摘要 |
A trailer construction includes forward and rear deck surfaces arranged in a central coplanar relationship having an intermediate deck vertically adjustable relative to the forward and rear decks. A hydraulic push bar is mounted below each forward and rear deck operative to project a push bar forwardly within the forward and rear portions of the trailer structure, with each push bar having rearwardly directed cables mounted to the intermediate trailer portion to effect raising and lowering of the trailer portion relative to the forward and rear surfaces of the trailer.
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