Cutter head device of vertical shaft heading machine

The invention discloses a cutter head device of a vertical shaft heading machine. The cutter head device comprises a vertical guide frame, a brush expanding cutter head and an advanced cutter head which are sequentially and fixedly connected into an integral structure from top to bottom, the vertical guide frame is of a hollow cylindrical structure and is driven by a power mechanism to rotate around the axis of the vertical guide frame, and multiple sets of first guide rollers are arranged on the outer wall of the vertical guide frame. The brush expanding cutter head is of a hollow circular truncated cone structure, and the outer wall of the brush expanding cutter head is provided with a plurality of sets of first hobs, first scraper knives, a first slag outlet and water spraying holes. The advanced cutterhead is of a hollow cylindrical structure, and multiple groups of second guide rollers are arranged on the circumferential surface of the outer wall of the advanced cutterhead; a plurality of groups of secon