| 摘要 |
<p>A central cage device 30 provides an opening 50 configured for receiving a drawbar 10 which extends there through allowing rocking motion of the drawbar. At each side of the central cage 30, a respective connector device 31, 32 is provided for connection to a trailer 20 or other equipment to be towed. Mutually opposed plates 37, 38 are provided at each side of the cage 30 and at facing ends at each associated connector device 31, 32. These plates extend at an acute angle relative to the vertical, preferably symmetrically and substantially parallel to each other at each side and the angle may be between 5° and 45° or between 7.5° and 20° relative to the vertical. At least one resilient block 35, 36, or a plurality of blocks of resilient material, with metal plates interleaved between, are arranged between mutually opposed plates 37, 38 on each cage side. The invention is aimed at allowing limited rocking of a trailer or agricultural equipment whilst addressing a prior situation where resilient material may have overheated.</p> |
