Special-shaped tunnel excavation device and special-shaped tunnel boring machine

The invention relates to the field of heading machines, in particular to a special-shaped tunnel excavation device and a special-shaped tunneling machine.The special-shaped tunnel excavation device comprises a main beam, a first supporting device and a second supporting device are arranged on the main beam, and the first supporting device and the second supporting device each comprise a supporting shoe; at least one of the first supporting device and the second supporting device further comprises a sliding shoe, the sliding shoe is used for being supported on the bottom wall of the tunnel in a sliding mode, and a dragging connecting structure is arranged on the first supporting device or the main beam. A guide sleeve is mounted on the main beam, a cutter head mounting seat is connected to the guide sleeve, and a wheel type cutter head is rotationally mounted on the cutter head mounting seat; the special-shaped tunnel excavation device further comprises a telescopic driving mechanism used for driving the wheel