Coal blockage monitoring and protecting device for coal conveying belt

The utility model discloses a coal conveying belt coal blockage monitoring and protecting device in the technical field of coal conveying belt coal blockage monitoring and protecting, which comprises a coal conveying belt, brackets are arranged on the side edges of the coal conveying belt, the brackets are fixedly connected with side plates, the side plates are fixedly connected with a plurality of protecting shells, and a wedge block is arranged above the coal conveying belt. When coal raw materials are blocked on the coal conveying belt, the coal raw materials push wedge-shaped blocks to move towards the two sides of the coal conveying belt on limiting sliding rods under the action of the coal conveying belt, wiring ends slide into wiring sleeves, a buzzer is powered on and gives an alarm, and meanwhile a control panel starts a driving motor; a driving motor drives a first cleaning rotating plate and a second cleaning rotating plate through a transmission shaft to scrape and push coal raw materials, a coal