Dumper unloading auxiliary device

The invention relates to a dumper unloading auxiliary device. The device comprises a vehicle head, a chassis, a carriage, a vehicle tail door and a jacking hydraulic device, and is characterized in that a cavity carriage is arranged at the bottom of the carriage, a telescopic device and an auxiliary frame are arranged in the cavity carriage, one end of the telescopic device is connected to one endof the cavity carriage, and the other end of the telescopic device is fixed to one end of the auxiliary frame through a fixing piece; the vehicle tail door is connected with the auxiliary frame through a movable connecting piece, a connecting plate is arranged on the vehicle tail door, one end of the connecting plate is connected to the telescopic device through a rope, the other end of the connecting plate is connected with a return spring, and the return spring is fixed to the side, close to the auxiliary frame, of the vehicle tail door. The loading and unloading auxiliary device is high inautomation degree, manual