| 摘要 |
The trailer shaft comprises two anti-sagging shafts (4) arranged in a deformable isosceles trapezium. These shafts are articulated at each of their ends to the small base of the trapezium, integral with the tractor, and to the large base integral with the trailer. The two shafts are articulated around two front tops (13) of the trapezium and engage, via a lever (7) to activate the lock (23) of the transfer unit (D). The transfer unit comprises a base (14) integral with the tractor and a runner (20) integral with the trailer.
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