Emergency evacuation ramp device capable of being automatically released

The invention discloses an emergency evacuation ramp device capable of being automatically released. The emergency evacuation ramp device comprises a first-stage ramp hinged to a fixed frame and a second-stage ramp hinged to the first-stage ramp. The first-stage ramp and the second-stage ramp are respectively provided with at least two hinged pedals, and the two pedals located in the middle are movable pedals. A linkage rod system is connected between the ends, away from each other, of the two movable pedals and the fixed frame, and the linkage rod system drives the first-stage ramp and the second-stage ramp to be unfolded or folded under the action of the energy storage device. One end of the rotating mechanism is connected with the linkage rod system, the other end of the rotating mechanism is connected with the movable pedals, and the linkage rod system can drive the two movable pedals to turn over; an energy storage device is connected between the first-stage ramp and the vehicle body; and the first-stage