Anti-toppling unloading device for trailer

The invention relates to the technical field of unloading, in particular to an anti-toppling trailer unloading device which comprises a moving frame, a first mounting plate, a first air cylinder and the like. Two mounting plates I are rotationally connected to the moving frame; two first air cylinders are rotationally connected to the movable frame. The telescopic ends of the first air cylinders are rotationally connected with the corresponding first mounting plates correspondingly. The pedals are controlled to rotate and turn over, so that all the pedals jointly form a continuous flat slide way, at the moment, the smooth faces of the pedals face upwards to facilitate sliding of goods, workers can directly place the goods such as bagged chemical fertilizers, bagged grains and box bodies on the pedals at the moment, and the goods slide down through the gravity of the goods to assist unloading; and the gap between every two adjacent pedals is blocked through the corresponding sealing plate, so that the corners