Discharge stagnation prevention device for normal-pressure cutterhead and normal-pressure cutterhead shield tunneling machine

The utility model discloses a stagnant discharge prevention device for a normal pressure cutterhead and a normal pressure cutterhead shield tunneling machine, the stagnant discharge prevention device for the normal pressure cutterhead comprises a slurry discharge piece and a conveyor, the slurry inlet end of the slurry discharge piece is arranged at a discharge port of a soil bin so as to discharge slurry in the soil bin; the feeding end of the conveyor is arranged at the slurry inlet end of the slurry discharging part, and the conveyor is used for discharging broken stones which are broken by the normal-pressure cutterhead to the slurry inlet end of the slurry discharging part so as to prevent the broken stones from blocking the slurry inlet end of the slurry discharging part. The feeding end of the conveyor is arranged at the slurry inlet end of the slurry discharging piece, so that when large rock blocks are stacked at the slurry inlet end of the slurry discharging piece, broken stone can be conveyed out o