Affiliation:
1. School of Mechanical Engineering, Taiyuan University of Science and Technology, Taiyuan 030024, China
2. Taiyuan Research Institute Company Limited, China Coal Technology and Engineering Group, Taiyuan 030006, China
Abstract
Understanding the interaction of the scraper chain–sprocket–tail drum–chain path is of great significance to improving the transportation efficiency and service life of the intermediate scraper conveying system of fully mechanized excavation equipment. The dynamic characteristics of the internal tension, running resistance, and multicontact interface load of the scraper chain are the theoretical basis of the research. Firstly, a method for obtaining periodic cyclic dynamic load history is proposed, and then the model of a single-chain scraper conveyor for a continuous shearer is constructed by using RecurDyn and simulation structures. Finally, the influence of parameters such as conveying inclination angle and running speed of the sleeve scraper chain on the reliable operation of the conveying system is determined. The results show that when the conveying angle is 12°, the scraper conveying system runs stably and the impact between multirigid bodies is small. As the chain speed increases from 0.85 to 2.4 m/s, the wear of the conveying system gradually increases, and the contact load distribution of upper chain plate 2, upper chain plate 3, and lower chain plate 3 is seriously worn.
Publisher
Canadian Science Publishing
Reference21 articles.
1. Hao X.D. 2018. Mining machinery, M. China Coal Industry Publishing House, Beijing. pp. 158–159.
2. Contact Analysis of Chain Drive in Scraper Conveyor Based on Dynamic Meshing Properties