The invention relates to the technical field of
engineering vehicles, in particular to an articulated bi-directional driving vehicle full hydraulic
steering system. The existing problems of articulated bi-directional driving vehicle steering systems in the prior art are solved. The articulated bi-directional driving vehicle full hydraulic
steering system comprises a front-rear driving
changeover valve set, a front priority valve, a rear priority valve, a front
load sensing steering gear, a rear
load sensing steering gear, a front-rear steering blocking valve, a left steering oil cylinder and a right steering oil cylinder. The front-rear steering blocking valve is an air control two-position six-way
reversing valve. The front
load sensing steering gear and the rear load sensing steering gear have four working oil ports which are connected with four oil ports of the front-rear steering blocking valve correspondingly. According to the articulated bi-directional driving vehicle full hydraulic
steering system, the air control two-position six-way
reversing valve is adopted between the front load sensing steering gear and the rear load sensing steering gear of an articulated bi-directional driving vehicle, so that a real sense of blocking between front and rear steering
system bodies is achieved, mutual interference between the front steering
system body and the rear steering
system body is avoided, and the steering performance of the whole vehicle is ensured; and the front-rear driving
changeover valve set is arranged on the articulated bi-directional driving vehicle, and thus
changeover of front-rear driving maneuvering is achieved.