Longitudinal tearing detection device for fire coal conveying belt

The utility model provides a coal-fired conveyor belt longitudinal tearing detection device which comprises a laser emitting device and a visual analysis device, a bottom plate is installed at the lower end of the laser emitting device, a high-speed camera is installed on the rear side of the upper end of the bottom plate, and the laser emitting device comprises a laser emitter and a laser device outer shell. Outer shell side plates are installed on the two sides of the laser device outer shell, an outer shell upper plate is installed at the upper end of the laser device outer shell, a supporting base is arranged at the upper end in the laser device outer shell, rotatable bases are rotationally connected to the rear ends of the outer sides of the two sides of the outer shell side plates, and the bottoms of the rotatable bases are connected with a bottom plate. According to the device, whether the belt is longitudinally torn or not is judged according to the characteristic that a laser beam can seriously defor