| 摘要 |
A trailer ( 10 ) for the recovery of vehicles has a drawbar ( 12 ) having first and second sections ( 14,16 ) hinged together at adjacent ends, about a horizontal transverse axis; the first section ( 14 ) of the drawbar ( 12 ) has a ball cup ( 24 ) by which it may be secured to a towing hitch ( 100 ) of a recovery vehicle, the second section ( 16 ) of the drawbar ( 12 ) has a pair of arms ( 30 ) pivotally mounted adjacent the end thereof remote from the end hinged to the first section ( 14 ), the arms ( 30 ) are pivotal between a stowed position in which they are disposed parallel to the drawbar ( 12 ) and a deployed position in which they are disposed coaxially of one another on an axis transverse to the longitudinal axis of the drawbar ( 12 ); a pair of wheel pans ( 50 ) are mounted and able to slide, one on each of the arms ( 30 ), the wheel pans ( 50 ) are interconnected to the second section ( 16 ) of the drawbar ( 12 ) by a linkage mechanism ( 60, 62 ), so that when the arms ( 30 ) are in the stowed position, the wheel pans ( 50 ) are slid inwardly towards the pivot connections of the arms ( 30 ) to the drawbar ( 12 ) and, when the arms ( 30 ) are in the deployed position, the wheel pans ( 50 ) being slid outwardly towards the free ends of the arms ( 30 ); a self steering wheel ( 70 ) being mounted on each of the arms ( 30 ), the self steering wheels ( 70 ) being disposed outboard of the wheel pans ( 50 ) when the arms ( 30 ) are in the deployed position.
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