The invention relates to articulated road trains consisting of one prime mover, one semi trailer and at least one improved dog trailer. Each dog trailer consists of a semi-trailer, the front of which is supported by an improved dolly. A slave reference point on each improved dolly is made to follow a master reference point on the prime mover by controlling the angle between the longitudinal axes of each dolly and the drawbar attaching it to the preceding trailer. The correct angle is deduced by numerical means which gives the correct value even for non-steady state turns. Alternatively, the angle between the longitudinal axes of the dolly and the drawbar attaching it to the preceding trailer can be fixed at zero degrees, and the path of the dolly controlled by turning the dolly wheels which are now rotatably attached to the ends of the fixed axles of the dolly. The correct wheel angles of the dolly wheels are deduced by numerical means which gives the correct wheel angles even for non-steady state turns. Minor modification of the forward motion system, enables no-skill reversing of a large number of dog trailers. In this case slave reference points towards the rear of the semi trailers is made to follow the path of a master reference point towards the rear of the last semi-trailer. If the articulation angle between the drawbar and the longitudinal axis of the preceding semi-trailer, and the articulation angle between the longitudinal axes of the dolly and the following semi-trailer are also controlled to achieve cooperative redundancy, jack-knifing of the train should no longer be possible.
IMPROVED ARTICULATED VEHICLE
2023-04-27
Patent
Electronic Resource
English
IPC: | B62D MOTOR VEHICLES , Motorfahrzeuge |