The cutting head is the main part employed by a roadheader for cutting, and its design directly determines the performance of a roadheader to some extent. The uniaxial compression experiment is carried out on the homogeneous coal rock made by the concrete, and then the compressive strength and elastic modulus of the coal rock are obtained. Aimed at the complexity of the process of cutting coal rock in a roadheader, the cutting head of a part-face tunnel machine is studied. Based on the physical parameters determined by the uniaxial compression experiment, the dynamic finite element software LS-DYNA is used to model the cutting head of the cutting machine, and then the effects of cutting angle and rotation angle on the cutting load, load fluctuation and specific energy are investigated. By the comparison between the time-domain curve of the cutting moment obtained from the homogeneous coal rock by experiment and the simulation results, and the simulation model is verified. The above research provides a theoretical basis for the improvement of the cutting performance of the cutting head of part of the roadheader, and provides a theoretical reference for the research of other types of cutting or cutting.
YUAN Xiaoming
,
ZOU Yida
,
ZONG Xuemei
,
YAN Peng
,
ZHANG Lijie
. Research on Cutting Performance of Cutting Header on Part-face Roadheader[J]. Journal of Mechanical Engineering, 2017
, 53(24)
: 193
-200
.
DOI: 10.3901/JME.2017.24.193
[1] 刘建琴, 刘蒙蒙, 郭伟. 硬岩掘进机盘型滚刀回转破岩仿真研究[J]. 机械工程学报, 2015, 51(9):199-205. LIU Jianqin, LIU Mengmeng, GUO Wei. Research on the simulation of cutting rock rotary by hard rock tunnel boring machine disc cutters[J]. Journal of Mechanical Engineering, 2015, 51(9):199-205.
[2] 周思阳, 亢一澜, 苏翠侠, 等. 基于力学分析的TBM掘进总推力预测模型研究[J]. 机械工程学报, 2016, 52(20):76-82. ZHOU Siyang, KANG Yilan, SU Cuixia, et al. Prediction of thrust force requirements for TBMs based on mechanical analysis[J]. Journal of Mechanical Engineering, 2016, 52(20):76-82.
[3] EYYUBOGLU E M, BOLUKBASI N. Effects of circumferential pick spacing on boom type roadheader cutting head performance[J]. Tunnelling & Underground Space Technology, 2005, 20(5):418-425.
[4] HEKIMOGLU O Z, FOWELL R J. Theoretical and practical aspects of circumferential pick spacing on boom tunnelling machine cutting heads[J]. Mining Science & Technology, 1991, 13(3):257-270.
[5] HEKIMOGLUO Z, OZDEMIR L. Effect of angle of wrap on cutting performance of drum shearers and continuous miners[J]. Transactions of the Institution of Mining & Metallurgy, 2004, 113(2):118-122.
[6] ACAROGLU O, ERGIN H. A new method to evaluate roadheader operational stability[J]. Tunnelling & Underground Space Technology, 2006, 21(2):172-179.
[7] ACAROGLU O, ERGIN H, ESKIKAYA S. Analytical hierarchy process for selection of roadheaders[J]. Journal of the Southern African Institute of Mining & Metallurgy, 2006, 106(8):569-575.
[8] DOGRUOZ C, BOLUKBASI N. Effect of cutting tool blunting on the performances of various mechanical excavators used in low-and medium-strength rocks[J]. Bulletin of Engineering Geology & the Environment, 2013, 73(3):781-789.
[9] RESTNER U, PICHLER J, REUMUELLER B. New technologies extend the range of applications of roadheaders[C/CD]//Symposium on Innovations in Tunnelling, Swiss Federal Institute of Technology Zurich, 2007.
[10] SU O, AKCIN N A. Numerical simulation of rock cutting using the discrete element method[J]. International Journal of Rock Mechanics & Mining Sciences, 2011, 48(3):434-442.
[11] GRIMA M A, MIEDEMA S A, KETTERIJ R G V D, et al. Effect of high hyperbaric pressure on rock cutting process[J]. Engineering Geology, 2015, 196:24-36.
[12] DEWANGAN S, CHATTOPADHYAYA S. Performance analysis of two different conical Picks used in linear cutting operation of coal[J]. Arabian Journal for Science & Engineering, 2016, 41(1):1-17.
[13] CHOI S O, LEE S J. Three-dimensional numerical analysis of the rock-cutting behavior of a disc cutter using particle flow code[J]. Ksce Journal of Civil Engineering, 2015, 19(4):1129-1138.
[14] WYK G V, ELS D N J, AKDOGAN G, et al. Discrete element simulation of tribological interactions in rock cutting[J]. International Journal of Rock Mechanics & Mining Sciences, 2014, 65(1):8-19.
[15] MENEZES P L, LOVELL M R, AVDEEV I V, et al. Studies on the formation of discontinuous chips during rock cutting using an explicit finite element model[J]. International Journal of Advanced Manufacturing Technology, 2014, 70(1-4):635-648.
[16] 李晓豁. 掘进机截割的关键技术研究[M]. 北京:机械工业出版社, 2008. LI Xiaohuo. Research on key technologies of roadheader cutting[M]. Beijing:China Machine Press, 2008.
[17] 付林, 杜长龙, 刘送永, 等. 螺旋钻采煤机钻头截齿载荷特性研究[J]. 中国机械工程, 2013, 24(15):2020-2024. FU Lin, DU Changlong, LIU Songyong, et, al. Research on load characteristics of picks on auger drill miner's aiguille[J]. China Mechanical Engineering, 2013, 24(15):2020-2024.
