Automatic alarming interlocking device for material level of corncob material bin

The invention discloses an automatic alarming interlocking device for the material level of a corncob material bin. The device comprises a hopper, the material bin, a hoister and an electric control box. The hoister is installed on the upper portion of the hopper, and comprises a hoisting rack, hoisting gears, hoisting gear racks, a hoisting motor and a belt, the hoisting gears are installed on the upper end and the lower end of the hoisting rack and meshed with the hoisting gear racks, the hoisting gear located on the upper portion of the hoisting rack is in transmission connection with the hoisting motor installed on one side face of the hoisting rack through the belt, the electric control box is installed at the bottom of one side face of the hoisting rack, a discharging port is formedin the side face, opposite to the hoisting motor horizontally, of the hoisting rack, and a conveying device is arranged under the discharging port. The device can automatically make an alarm when thematerial level reaches a s