Chassis device of land-rail dual-purpose automatic running vehicle

The utility model relates to a chassis device of a land-rail dual-purpose automatic running vehicle, which adopts the following technical scheme that a driven wheel assembly, a driving wheel assembly and a universal wheel are sequentially arranged on a bottom frame, the first wheel major diameter of the driving wheel assembly is smaller than the second wheel major diameter of the driven wheel assembly, and the second wheel major diameter of the driving wheel assembly is smaller than the second wheel major diameter of the universal wheel. The first wheel diameter of the driving wheel assembly is the same as the second wheel diameter of the driven wheel assembly. 本实用新型涉及一种陆轨两用自动行驶车辆的底盘装置，采用以下技术方案：所述底部框架上依次设有从动轮总成、驱动轮总成、万向轮，所述驱动轮总成的轮大径一比从动轮总成的轮大径二小，所述驱动轮总成的轮小径一与从动轮总成的轮小径二相同。