Automatic emergency stop device for conveying belt

The utility model provides an automatic emergency stop device for a conveying belt. The automatic emergency stop device comprises a touch rod, a first light touch switch, a contactor, a first loop and a second loop. The touch rod is vertically mounted at a feeding hole of the chute and is positioned on one side far away from the high conveying belt, and the chute is connected between the two conveying belts with different heights; the lower end face of the touch rod is a preset distance away from a discharge port of the chute, and the upper end face of the touch rod is connected with the first light touch switch in an abutting mode; the preset distance is the highest height of materials in the chute when the chute is not blocked; the first touch switch is a normally closed switch; the first loop comprises a first power supply, a first touch switch and a coil of a contactor which are connected in series; the second loop comprises a motor, a second power source and a contact of a contactor which are connected i