The present invention discloses a triangular track chassis device, comprising a triangular bracket, a driving wheel, a guide wheel, a tensioning wheel, a track and a magnetic component. The triangular bracket is vertically arranged, and the driving wheel, a guiding wheel, and a tensioning wheel are respectively arranged at the three top corners of the triangular bracket. The magnetic component is uniformly arranged on the outer surface of the track, and a connecting component is also connected to the triangular bracket. The triangular bracket is horizontally arranged with a rotating shaft, which drives the driving wheel to rotate radially, The connecting piece is horizontally equipped with a shaft, which drives the driving wheel to rotate in its axial direction. In the present invention, the driving wheel is set on the guide wheel, and the vertical load directly transmitted from the ground above the tensioning wheel is transmitted to the driving wheel. The driving wheel can rotate both radially and axially, with fast movement speed and flexible control, so that the driving wheel adheres to the ground with different degrees of curvature, combining the advantages of both wheel and track types, ensuring stable driving of the driving wheel