基于离散单元法的刨煤机刨削性能分析及试验研究

摘要
图/表
参考文献(22)
相关文章 (15)

全文: PDF (1632 KB) HTML (1 KB)
输出: BibTeX | EndNote (RIS)

摘要

为研究刨煤机的刨削性能，以BH38/2×400型刨煤机为研究对象，对其应用煤层煤样性质进行测定，确定出煤壁材料本征参数并构建出煤壁三维黏结接触模型。通过对刨煤机刨削过程进行数值模拟，得到刨削过程中刨头的受力信息、煤炭颗粒运动规律以及刨削后煤壁表面残留状态，分析了不同刨削深度和刨速条件下刨刀受力的变化规律。研究结果表明：刨刀受力的线性累加使得刨头刨削阻力和煤壁挤压力较大，刨头受力接近高斯分布；刨削过程中刨削深度过大会造成能量积聚与释放急剧增加，刨削速度改变对刨刀受力影响较小。通过动力学仿真发现刨刀合金头镶嵌处和刀体背脊处的受力较为恶劣，刨刀前侧合金头位置出现严重的变形；对不同条件下刨煤机刨削过程进行了试验测试，测试得到刨刀三向力与仿真结果最大误差分别为7.21%，7.91%和9.41%，通过追踪刨刀的工作状态，发现刨刀损坏形式与仿真结果一致，验证了离散元数值模拟的准确性；研究结果为刨煤机刨削性能评价及其结构优化提供一种新的方法。

	服务

	把本文推荐给朋友
	加入我的书架
	加入引用管理器
	E-mail Alert
	RSS
	作者相关文章
	田震1
	2
	荆双喜2
	赵丽娟3
	张建军4
	高珊1

关键词 ：离散单元法, 接触模型, 刨煤机, 刨刀, 刨削性能

Abstract：In order to study the cutting performance of the coal plow,the properties of coal samples were determined by taking the BH38 / 2 × 400 type coal plow as the research object.The intrinsic parameters of coal wall material were determined and the three-dimensional bond contact model of coal wall was constructed.The force information of coal plow, the motion distribution of coal particles and the residual state of coal wall surface were obtained through the numerical simulation.The variation law of cutting force of the plow bit under different cutting depth and cutting speed was analyzed.The results show that:the linear accumulation of the force exerted on the plow bit makes the plow head’s cutting resistance and extrusion force greater,and the force of the plow head obeys Gauss distribution.The excessive cutting depth in the cutting process leads to a sharp increase in energy accumulation and release,while the change of cutting speed has little influence on the force of plow bit.The stress on the installation position of alloy head and back of plow bit body is more severe,and the position of the alloy head on the front side of the planer is seriously deformed.Through the cutting test of the plow under different conditions, the maximum errors between the experimental and the simulation results are respectively 7.21%, 7.91% and 9.41%.By tracing the working state of plow bit, it is found that the damage form of plow bit is consistent with the simulation results, which verifies the accuracy of discrete element numerical simulation.The results provide a new method for the cutting performance evaluation and structure optimization of coal plow.

Key words： discrete element method contact model coal plow plow bit cutting performance

收稿日期: 2018-09-18 出版日期: 2020-05-15

引用本文:

田震1,2，荆双喜2，赵丽娟3，张建军4，高珊1. 基于离散单元法的刨煤机刨削性能分析及试验研究[J]. 振动与冲击, 2020, 39(10): 261-268.
TIAN Zhen1,2, JING Shuangxi2, ZHAO Lijuan3, ZHANG Jianjun4, GAO Shan1. Performance analysis and experimental investigation of coal plow based on discrete element method. JOURNAL OF VIBRATION AND SHOCK, 2020, 39(10): 261-268.

链接本文:

http://jvs.sjtu.edu.cn/CN/ 或 http://jvs.sjtu.edu.cn/CN/Y2020/V39/I10/261

[1] 赵丽娟, 田震, 张建军,等. 刨煤机随机载荷的模拟分析及其应用[J]. 机械设计, 2016,33(10):55-61.

Zhao Lijuan,Tian Zhen,Zhang Jianjun,et al. Random load simulation analysis of plow and its application[J]. Journal of Machine Design, 2016,33(10):55-61.

[2] 毛君, 张瑜, 刘占胜,等. 间隙条件下刨煤机刨头接触碰撞动态特性研究[J]. 振动与冲击, 2015, 34(19):224-229.

Mao Jun, Zhang Yu, Liu Zhansheng, et al. Dynamic characteristics of plough head under contact-impact with clearances[J]. Journal of Vibration & Shock, 2015, 34(19):224-229.

[3] 张强, 付云飞, 宋秋爽,等. 基于NSGA-Ⅱ算法的不完全概率信息刨头多目标模糊可靠性优化[J]. 工程设计学报, 2012, 19(1):25-29.

Zhang Qiang,Fu Yunfei,Song Qiushuang,et al. Multi-objective optimization reliability design for incomplete probability information plow head base on NSGA-Ⅱ[J]. Journal of Engineering Design, 2012, 19(1):25-29.

[4] Dirk Abel, Ulrich Paschedag. Computer applications in engineering,operation and control of high performance shearer or plow long-wall systems[J]. Computer Applications in the Minerals Industries,2001:417-422.

[5] 张强. 基于遗传算法的刨煤机系统多目标模糊可靠性优化[J]. 科技导报, 2012, 30(1):53-55. Zhang Qiang .Fuzzy Muli-objective Reliability Optimization of Plow Based on Genetic Algorithms[J]. Science & Technology Review, 2012, 30(1):53-55.

[6] 李晓豁,宋元. 拖钩刨刨头转角的运动学模型[J]. 黑龙江科技学院学报,2009,19(1):57-60.

Li Xiaohuo, Song Yuan. Kinematics modeling of drag-hook plow head's deflected angle[J]. Journal of Heilongjiang Institute of Science & Technology, 2009,19(1):57-60.

[7] 付伟丽. 滑行式刨煤机刨头随机刨削载荷谱研究[D]. 阜新:辽宁工程技术大学,2011.

Fu Weili.Research on random planing loads spectrum of sliding plough’s plow head[D]. Fuxin:Liaoning Technical University,2011.

[8] 郝志勇,毛君. 基于LS-DYNA 刨刀刨削煤岩的模拟研究[J]. 微计算机信息,2011,27(9):25-26.

Hao Zhiyong, Mao Jun. The Simulation Experiments Research of Plow Bit Cutting Coal Rock Basing on Ls-Dyna[J]. Advanced Materials Research, 2011, 27(9):25-26.

[9] 赵丽娟,何景强,李发泉. 刨煤机刨刀破煤过程的数值模拟[J]. 煤炭学报,2012,37(5):878-883.

Zhao LijuanJ, He Jingqiang,Li Fanquan. Numerical simulation of coal breaking process of plow bit[J]. Meitan Xuebao/journal of the China Coal Society, 2012, 37(5):878-883(6).

[10] Huang H, Lecampion B.Detournay E.Discrete element modeling of tool-rock interaction II: rock indentation[J]. International Journal for Numerical & Analytical Methods in Geomechanics, 2013, 37(13):1913-1929.

[11] Huang H , Detournay E . Discrete element modeling of tool-rock interaction II: rock indentation[J]. International Journal for Numerical & Analytical Methods in Geomechanics, 2013, 37(13):1930-1947.

[12] 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.

[13] Li X , Wang S , Ge S , et al. A study on drum cutting properties with full-scale experiments and numerical simulations[J]. Measurement, 2018, 114:25-36.

[14] Gao K , Wang L , Du C , et al. Research on the effect of dip angle in mining direction on drum loading performance: a discrete element method[J]. International Journal of Advanced Manufacturing Technology, 2017(89): 2323–2334.

[15] 袁晓明,王储,邹易达,等.基于离散元法的掘进机截齿最优旋转角研究[J].机械设计,2018,35(06):29-35

Yuan Xiaoming,Wang Chu,Zou Yida,et al.Research on the optimal rotation angle of roadheader pick based on discrete element method[J]. Journal of Machine Design,2018,35(06):29-35

[16] Obermayr　M,Dressler　K,Vrettos　C,et al.A Bonded particle　Model　for　Cemented sand[J]. Computers & Geotechnics, 2013,49(49):299-313.

[17] 李强, 巩亚东, 宋伟刚. 基于物料运动特性的旋回破碎机生产率分析[J]. 中国机械工程, 2016, 27(15):2034-2039.

Li Qiang,Gong Yadong,Song Weigang.Gyratory crusher productivity analysis based on kinematic characteristics of materials[J]. China Mechanical Engineering, 2016, 27(15):2034-2039.

[18] 雷强. 基于离散元的物料破碎机理研究[D]. 江西理工大学, 2012.

Lei Qiang.Research on material crushing mechanism based on discrete element method[D]. Jiangxi University of Science and Technology, 2012.

[19] 田震，赵丽娟，周文潮，等.离散元技术在螺旋滚筒装煤性能研究中的应用[J].煤炭科学技术,2018,46(8):135-139.

Tian Zhen,Zhao Lijuan,Zhou Wenchao, et al．Application of discrete element technology to study on coal loading performances of spiral cutting drum［J］. Coal Science and Technology，2018,46( 8) : 135-139.

[20] 田震, 赵丽娟, 刘旭南,等. 基于离散元法的螺旋滚筒装煤性能研究[J]. 煤炭学报, 2017, 42(10):2758-2764.

Tian Zhen,Zhao Lijuan,Liu Xunan,et al.Loading performance of spiral drum based on discrete element method[J]. Journal of China Coal Society, 2017, 42(10):2758-2764.

[21] 肖正明, 王鑫, 伍星,等. 塔磨机运行参数优化匹配的仿真分析与试验研究[J]. 中国机械工程, 2016, 27(4):483-487.

Xiao Zhengming,Wang Xin,Wu Xing,et al.Simulation Analyses and Experimental Investigation on Optimum Matching of Operating Parameters of Tower Mill[J]. China Mechanical Engineering, 2016, 27(4):483-487.

[22] 康晓敏,李贵轩. 随机动载荷作用下刨煤机刨链疲劳寿命预测[J]. 煤炭学报,2010,35(3):503-508.

Kang Xiaomin, Li Guixuan. Prediction of fatigue life of coal plow chain under stochastic dynamic load [J]. Journal of China Coal Society,2010,35(3):503-508.