| 摘要 |
A linear hydraulic actuator mounted to the frame of a trailer to drive a slider longitudinally and return the slider to its rest position urging a ramp about a horizontal transverse axis such that the ramp moves between a stowed position and an extended position. The slider is operatively connected to a parallel rod which is connected to a bell crank on a pivotally mounted stand beneath the end of the trailer such that as the slider moves the stand is concomitantly urged between a stowed position and a deployed ground engaging position.
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