The working principle of the scraper conveyor is to use the open chute as the load-bearing component for the materials, and fix the scraper on the chain to form a scraper chain as the traction component. When the head drive part is activated, it drives the chain wheel on the head shaft to rotate, causing the scraper chain to operate in a cyclic manner, moving the materials along the chute until they reach the head of the machine for unloading. The scraper chain runs in a continuous closed loop around the chain wheel to complete the continuous transportation of the materials.