Study on Roadheader Cutting Load at Different Properties of Coal and RockReport as inadecuate




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The Scientific World JournalVolume 2013 2013, Article ID 624512, 8 pages

Research ArticleCollege of Mechanical and Electronic Engineering, Shandong University of Science and Technology, Qingdao, Shandong 266590, China

Received 5 August 2013; Accepted 16 September 2013

Academic Editors: F. Berto and G. J. Gibbons

Copyright © 2013 Xueyi Li et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The mechanism of cutting process of roadheader with cutting head was researched, and the influences of properties of coal and rock on cutting load were deeply analyzed. Aimed at the defects of traditional calculation method of cutting load on fully expressing the complex cutting process of cutting head, the method of finite element simulation was proposed to simulate the dynamic cutting process. Aimed at the characteristics of coal and rock which affect the cutting load, several simulations with different firmness coefficient were taken repeatedly, and the relationship between three-axis force and firmness coefficient was derived. A comparative analysis of cutting pick load between simulation results and theoretical formula was carried out, and a consistency was achieved. Then cutting process with a total cutting head was carried out on this basis. The results show that the simulation analysis not only provides a reliable guarantee for the accurate calculation of the cutting head load and improves the efficiency of the cutting head cutting test but also offers a basis for selection of cutting head with different geological conditions of coal or rock.





Author: Xueyi Li, Binbing Huang, Guoying Ma, and Qingliang Zeng

Source: https://www.hindawi.com/



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