Automatic Backward Motion Steering of Tractor With Two-Axle Trailer Combination

Abstract

Backing up of a tractor with a two-axle trailer, especially in a steered position, is difficult. Likewise to go back on a curve with a fixed steering-angle is impossible. The steering ability of the combination was increased by using the facilitating system which has cross-arms. But in order for this system to be applied to a combination, the trailer-hitch must consist of two pieces. Moreover, this system is not suitable and has to be pulled out when the combination is in forward motion. The combination can be steered automatically in every position by means of a system consisting of hydraulic and electronic units. And for this, axles of the trailer have to be steerable together. The trailer-hitch does not have to be rigidly tied to the front-axle of the trailer.