| 摘要 |
<p>The two wings (2) of the trailer are folded into a parallel setting behind the front support wheels (5) for transport along roads. A main frame member (22) runs the length of the trailer from the single drawbar with the wings pivotted on either side of a sleeve (7) which slides along the frame. The wings are extended by pivoted levers (20,21) between fixed points (18,19) at the rear of the frame and pivots on the rear edges of the wings. The ends of the wings have support wheels (13,14) to contact the ground when extended. The sliding sleeve pulls the folded wings close behind the trailer wheels for a compact trailer.</p> |
