Dynamic Properties of Chain Drive System Considering Multiple Impact Factors
Shoubo Jiang, Shan Huang, Qingyang Zeng, Chunyun WANG, Kuidong Gao, Y. Q. Zhang
Abstract
Chain drive system is the core subsystem of scraper conveyor. It is affected by the impact load caused by large coal when working, thereby seriously affecting its operation stability. A simulation model of the chain drive system is established by using joint simulation, and simulation scheme are introduced. The dynamic properties of chain drive system under three working conditions of different lumps and different heights of large coal and large coal impacting on different positions in the middle groove are simulated. Results show that when the chain ring is impacted, the vibration amplitude of the impacted chain is positively correlated with the lumpiness of the large coal, and the longitudinal vibration is the main reason for the failure of the chain drive system. With the increase in the impact height of large coal, the longitudinal vibration growth rate of the regional chain in front of the impacted chain is greater than that of the regional chain in rear. Under different position conditions, the stability of the chain drive system is greatly affected when the chain ring in the no load area is impacted. This study provides a reference for the theoretical study of the dynamic properties of chain drive system.