Mining scraper conveyors operate in complex environments for a long time

and the sprocket will suffer different degrees of wear

which will have a great impact on the dynamic performance of the scraper conveyor.Ttaking the ring chain transmission system of the SGZ 1000/3*1000 mining scraper conveyor as the research object

and firstly the wear sprocket model was established.Then the dynamic simulation of sprocket drive process under different wear degree was carried out to analyze the influence of sprocket wear on the dynamic characteristics of the system

and it was verified by experiments.The results show that

compared with no wear

sprocket wear intensifies the speed fluctuation of the chain during operation

and increases up to 3 times.The meshing contact force between the sprocket and the chain ring is increased to 3 times the original;The connecting force between the links increases to twice the original

while the connecting force fluctuation increases up to four times the original.This study provides a theoretical reference for the design of the drive system of the scraper conveyor.