Convertible star-wheel planet-wheel stairs-climbing wheel

The utility model relates to a star-wheel and planetary transferable wheel for climbing stairs including a wheel carrier with a radial pivoted arm and vehicle wheels (2), the vehicle wheels (2) are provided at the end of each pivoted arm of the wheel carrier, the wheel carrier is connected with the vehicle body via a central shaft (3), central gears (4) is provided on the central shaft (3), each central gear shaft is provided with a coaxial planetary gear (5), idler gear (8) are provided between the central gears (4) and each planetary gear (5) respectively, the central gears (4) intermesh the idler gears (8), the idler gears (8) intermesh the planetary gears (5), the wheel carrier is box body (1), the central gears (4), the idler gears (8) and the planetary gears (5) are provided inside the box body (1), the vehicle wheels are provided outside the box body (1). The wheel carrier of the utility model is box body, a planetary gear system comprising central gears, idler gears and planetary gears is provided inside the box body thereby the utility model has the compact structure and excellent stability.