Pulse switch structure of drying belt conveyor

The utility model discloses a pulse switch structure of a drying belt conveyor. The pulse switch structure comprises a tail wheel main shaft, an extension shaft, a concave-convex wheel, a pulse switch and a pulse switch mounting bracket, the tail wheel main shaft is located in the belt machine, and the concave-convex wheel, the pulse switch and the pulse switch installation support are all located outside the belt machine. The extension shaft inwards penetrates through a side plate penetrating hole in a belt machine side plate and then is connected with a tail wheel main shaft, the concave-convex wheel is installed on the extension shaft, the pulse switch installation support is fixedly connected with the outer surface of the belt machine side plate, the pulse switch is installed on the pulse switch installation support, and the pulse switch is aligned to one side of the concave-convex wheel through the pulse switch installation support. The structure of an existing drying line belt machine pulse switch is im