| 摘要 |
The support beams (10, 12) are articulately connected at their ends turned away from the arms (32, 34) and form a pincer-type openable and closable fixture which can be fitted over the vehicle towing ball (K) when they are located parallel to each other, gripping around the ball tightly when their ends supporting the arms are pushed apart. - A foldable connecting beam (22 24) can be inserted to secure the beams in this position, an eccentric lock (42) is provided. |
