Double-tire electric wheel system for electric coach

The invention discloses a double-tire electric wheel system for an electric coach. The double-tire electric wheel system comprises a hub motor, a motor shell, a planetary mechanism, a wheel rim, a motor shaft and a brake. The wheel rim is connected on a planetary wheel support through bolts, the planetary wheel support is supported on an axle shell through a bearing, the motor shaft is fixed on the axle shell and connected with a rotor, a sun wheel is fixed on the motor shaft, a gear ring is fixed on the motor shell, a planetary wheel is supported on the planetary wheel support, a brake braking caliper is fixed on the axle shell, and a brake braking disc is fixed on the planetary wheel support. By the above structure, power transmission is transmitted onto the motor shaft through the rotor, and power is output onto wheels through a planetary wheel speed reducer taking the sun wheel as an active member and the planetary wheel as a passive member. The electric wheel system can fully utilize space of double tire