| 摘要 |
<p>The coupling consists of a pivoted towbar (13) with its forward end coupled to the rear of the tractor unit and its rear end rotating about a pivot with a vertical axis (43) on the trailer chassis, which has no forward bogie, and at least one oblique lever (20) of constant length which is pivoted by its ends to the rear of the tractor unit and the front of the trailer. A variant of the design can have two oblique levers, positioned diagonally in relation to the ends of the tractor unit and trailer and crossing over between them, while the towbar itself is telescopic and passive. The ends of the oblique levers are connected to the tractor unit and trailer by ball joints. The whole towbar assembly can be covered by a concertina unit between the tractor unit and trailer.</p> |
