| 摘要 |
<p>A system is adapted for guided steering of at least one set of rear wheels of a semi-trailer or trailer of a cargo vehicle which comprises said semi-trailer or trailer and a pulling vehicle or a tractor. The system comprises bearing means wherein the rear wheels are journalled turnable with respect to the chassis of the semi-trailer so that the rear wheels may turn from a neutral position to one or the other side for generating steering of the vehicle in one direction with respect to said neutral position. The system further comprises power generating means to act on the rear wheels and by activation generate said turnings of the rear wheels to one or the other side, activating means mounted in the driver's cabin of the vehicle and adapted to be operated by the driver of the vehicle for activation of the power generating means for generating a steering of the rear wheels independently of the steering of the pulling vehicle or tractor as well as locking means adapted to be operated from the driver's cabin of the vehicle, in a first position for generating locking of the rear wheels in said neutral position, and being switchable from the first position to a second position, in which the rear wheels are released and brought to turn by activation of the activation means. Furthermore, the system comprises blocking means comprising speed detecting means or being adapted to cooperate with a speed detector of the vehicle for detection of the speed of the vehicle and for determination of whether or not the speed of the vehicle is higher or lower than a preset speed limit, said blocking means cooperating with the locking means and being adapted to generate blocking of the locking means in said first position, when the speed detected by the blocking means is higher than said speed limit, and to release the locking means from said blocking when the speed detected by the blocking means is lower than said speed limit.</p> |
