The working principle of the belt conveyor The belt conveyor is also called the belt conveyor. The main component is the conveyor belt, also known as the belt. The conveyor belt doubles as the traction mechanism and the carrier mechanism. The composition and working principle of the belt conveyor are shown in Figure 2-1. It mainly includes the following parts: conveyor belt (commonly called tape), idler and intermediate frame, drum tensioning device, brake device, cleaning device. And unloading devices, etc.