| 摘要 |
The system has a hitch ball hook (1) mounted on a tractor vehicle, and a coupling head (2) mounted on a trailer vehicle and cooperated with a ball for assuring coupling. A safety coupling device (15) includes linking units (16) such as chain or cable, located between attachment points (18, 19) that are respectively located on sides of the tractor and trailer vehicles. The safety coupling device includes one of the attachment points on the tractor vehicle side that is provided on the hook, where the attachment point is integrally realized with a coupling hook. The attaching points are realized under a form of lugs. |
