There are many varieties and types of belt conveyors produced in China. During the Eighth Five-Year Plan period, through the implementation of the national one-stop project of "fully mechanized mining equipment with a daily output of 10,000 tons", the technical level of belt conveyor has been greatly improved, and the key technology research and new product development of high-power long-distance belt conveyor for coal mines have made great progress. For example, the complete set of equipment for long-distance belt conveyor with large inclination angle and the retractable belt conveyor with high yield and high efficiency have filled the gap in China. The key technologies of belt conveyor deceleration and its main components have been studied and developed theoretically, and a variety of soft start and braking devices and programmable electric control devices with PLC as the core have been successfully developed. The drive system adopts variable speed hydraulic coupling and planetary gear reducer. The gap of key core technologies of large-scale belt conveyor ① Dynamic analysis and monitoring technology of belt conveyor The key technology of long-distance high-power belt conveyor is dynamic design and monitoring, which is the core technology that restricts the development of large-scale belt conveyor. At present, China adopts the rigid theory to analyze and study the belt conveyor, and has formulated the calculation method and design specification. In the design, a very high safety system (generally n= 10) is adopted for the conveyor belt, which is far from the actual situation. In fact, the conveyor belt is viscoelastic, and the dynamic response of the conveyor belt to the starting and braking force of the driving device is a very complicated process, which cannot be explained and calculated simply by rigid body mechanics. The dynamic design method and application software of the belt conveyor are developed, and the dynamic tension of the conveyor is dynamically analyzed and monitored on the large conveyor, which reduces the safety system of the conveyor belt, greatly prolongs the service life and ensures the reliability of the conveyor operation, so that the design of the large belt conveyor reaches the highest level (the safety factor of the conveyor belt is n = 5 ~ 6) and greatly reduces the equipment cost of the conveyor, especially the conveyor belt cost. www.jinbo999.cn