Automatic plastic-extruding fracture alarming device of plastic extruder

The utility model discloses an automatic plastic-extruding fracture alarming device of a plastic extruder. The automatic plastic-extruding fracture alarming device comprises a base and is characterized in that a telescopic rod is fixedly arranged on the base; a box body is fixedly arranged at the upper end of the telescopic rod; an upper clamping wheel and a lower clamping wheel are arranged on the side wall of the box body; a speed relay is fixedly arranged in the box body; an upper alarming lamp is fixed on the upper part of the box body; a rotating shaft of the upper clamping wheel and a rotating shaft of the speed relay are fixed to form a whole body; a joint of the speed relay is connected with the alarming lamp through a wire. The automatic plastic-extruding fracture alarming device of the plastic extruder is simple in structure, convenient to use and operate and low in cost and can realize automatic indication on faults of the plastic extruder by detecting a fracture condition; during running of the pl