标题：The transporting efficiency and mechanical behavior analysis of scraper conveyor
作者：Wang, Xuewen; Li, Bo; Wang, Shaowei; Yang, Zhaojian; Cai, Liu
作者机构：[Wang, Xuewen; Li, Bo; Yang, Zhaojian; Cai, Liu] Taiyuan Univ Technol, Coll Mech Engn, Shanxi Key Lab Fully Mechanized Coal Min Equipmen, Taiyuan 0300 更多
通讯作者：Wang, XW;Wang, Xuewen
通讯作者地址：[Wang, XW]Taiyuan Univ Technol, Coll Mech Engn, Shanxi Key Lab Fully Mechanized Coal Min Equipmen, Taiyuan 030024, Shanxi, Peoples R China.
来源：PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART C-JOURNAL OF MECHANICAL ENGINEERING SCIENCE
关键词：Chute; bulk coal; discrete element method; the mass flow rate; wear
摘要：Scraper conveyor is the main equipment for underground coal transportation, and its high-efficiency and smooth operation is of great significance to safety production. This study simulated the process of transporting bulk coal by the scraper conveyor using the discrete element method. Transporting efficiency of scraper conveyor affected by the chain speed, static frictional coefficient, particle size, and laying angle was studied. Then the relationship between the chain speed, static frictional coefficient and the chute wear was explored. The stress and deformation characteristics of the chute during the transportation were studied by coupling the discrete element method and finite element method. Results showed that the mass flow rate changed significantly with the chain speed and static frictional coefficient, while it varied slightly with the change of particle size and laying angle; the higher chain speed and larger bulk coal led to more serious wear of the chute, and large stress mainly concentrated at the direct contact area and the area under the impact load from the bulk coal. Therefore, when designing the chute structure, it is necessary to ensure the wear resistance and strength of the contact area on the chute. The results could provide a theoretical basis for structural optimization of scraper conveyor.