Automatic lifting auxiliary wheel device for two-wheeled electric vehicle and motorcycle

The utility model relates to the technical field of two-wheeled vehicle type auxiliary supporting devices, provides an automatic lifting auxiliary wheel device for a two-wheeled electric vehicle and a motorcycle, and can solve the technical problems that an existing limiting piece is easy to break and poor in reliability. The device comprises an auxiliary wheel, a movable arm, a support and a driving unit, the auxiliary wheel is rotationally supported on the movable arm, the movable arm is rotationally supported on the support, and the driving unit is fixed to the support and is in transmission connection with the movable arm. The fan-shaped gear is meshed with an output gear of the driving unit, a hollowed-out hole is formed in the fan-shaped gear, a limiting rod penetrates through the hollowed-out hole and then is fixedly connected with the support through a supporting piece, and limiting grooves matched with the limiting rod are formed in the two sides, located in the rotating direction of the fan-shaped g