Hydraulic device capable of turning and used for displacement of heading machine main machine

The utility model provides a hydraulic drive device capable of turning for displacement of a heading machine main machine. The hydraulic drive device comprises a rack body, a driven wheel assembly, a driving wheel assembly and a supporting leg oil cylinder assembly. The rack body comprises a plurality of cross beams, a supporting leg oil cylinder connecting frame, a driving wheel assembly connecting frame, a driven wheel assembly connecting frame, a sliding plate, a circular tube longitudinal beam, a middle connecting plate and a driving wheel direction fixing base. The driven wheel assembly is connected with the driven wheel assembly connecting frame, and the bottom is supported by the flat wheel trolley; the driving wheel assembly is connected with the driving wheel assembly connecting frame and used for driving the hydraulic device to move. The supporting leg oil cylinder assembly is connected with the supporting leg oil cylinder connecting frame, and the bottom of the supporting leg oil cylinder assembly