Funnel plugging automatic stop device for belt conveyor

The utility model discloses a funnel plugging automatic stop device for a belt conveyor. The device is characterized in that a movable lever is articulated with an outer wall of a funnel by a rotation shaft, wherein a material receiving plate is arranged at one end of the movable lever positioned in a direction of the belt; the other end of the movable lever is matched with a position where a limit switch is located; when the movable lever rotates clockwise, the limit switch is touched and positioned in an emergency stop state; and a counterweight is fixed on the movable lever. The device has the advantages that equipment accidents such as motor burning out, coupler breakdown, adverse stop device damaging and belt abruption caused after material spreading are avoided effectively; the device can make a reaction at the first time and stops timely, so that large-amount material spreading is avoided, the labor intensity of staff is reduced greatly, and spread material cleaning overtime is avoided; and under the c