| 摘要 |
<p>A multiple axle trailer comprises a chassis (11) pivotally connected to turn substantially horizontally with respect to a sub-chassis (12) and provided with means at its forward end to enable the trailer to be hitched to a towing vehicle, the sub-chassis carrying forward (16) and rear (19) pairs of wheels. An adjustable length steering arm (34) is pivotally connected to the sub-chassis and to the chassis forward of the connection to the sub-chassis. A system of linkages connects the forward wheel king pins with a mounting point (46, 58) which is rotationally fixed with respect to the steering arm and operates to turn the forward wheels from the steering arm so that the trailer tracks the towing vehicle. In a preferred embodiment the mounting point (58) is moveable longitudinally to enable the forward wheels to be moved in the opposite direction during reversing of the trailer.</p> |
