Steerable portal type lining trolley

A steerable portal type lining trolley comprises a control system, a supporting portal, a steering portal, a steering driving mechanism, a jacking mechanism, a walking mechanism and a formwork assembly, and the supporting portal comprises a supporting portal top and a vertically-arranged supporting longitudinal beam; the top of the supporting longitudinal beam is fixedly connected with the top of the supporting portal frame. The steering portal frame comprises a steering portal frame top and a walking longitudinal beam which is vertically arranged, the top of the walking longitudinal beam is fixedly connected with the steering portal frame top, and the steering portal frame top is located below the supporting portal frame top; the steering driving mechanism is arranged between the top of the supporting portal and the top of the steering portal and used for driving the steering portal to rotate; the jacking mechanism is arranged at the bottom of the supporting longitudinal beam, connected with the control syst