ZHAO Lijuan，YANG Shijie，ZHANG Haining，et al. Fatigue life prediction of shearer rocker shell based on DEM−MFBD bidirectional coupling technology[J]. Coal Science and Technology，2023，51（S2）：252−258
. DOI: 10.13199/j.cnki.cst.2022-1908| Citation: |
ZHAO Lijuan，YANG Shijie，ZHANG Haining，et al. Fatigue life prediction of shearer rocker shell based on DEM−MFBD bidirectional coupling technology[J]. Coal Science and Technology，2023，51（S2）：252−258 . DOI: 10.13199/j.cnki.cst.2022-1908
|
Shearer rocker arm shell is an important component and weak link of shearer, and its life directly affects the working performance of shearer. In order to study the influence of the load on the drum about the life of the rocker arm shell when the shearer is cutting complex coal seams. Taking MG325 shearer to cut 17 layers of gangue containing coal wall in Yangcun Coal Mine of Yanzhou mining area as the project object, the external load of shearer spiral drum is obtained based on the actual working conditions by using Discrete Element Method-Multi Flexible Body Dynamics (DEM−MFBD ) two-way coupling technology, discrete element simulation software EDEM and multi-body system dynamics simulation software RecurDyn. In the RecurDyn simulation platform, the three-dimensional model of the shearer rocker arm is established, and the boundary conditions are set and the rocker arm shell is flexible. The fatigue life of the rocker shell is calculated through the Durability fatigue durability analysis module of the software itself. The professional drawing software Origin is used to draw the post-processing load curve of the two software. It is found that the trend was relatively consistent, and the post-processing data mean and standard deviation is close, which proved that the coupling effect between the two is good. The results show that when the MG325 shearer is used with a drum speed of 83.5 r/min, a cut-off depth of 600 mm and traction speed of 5 m/min to cut complex coal seams, the load on the drum has a strong load fluctuation phenomenon. The maximum equivalent stress of the shell is 230.51 MPa. The higher equivalent stress of the shell is concentrated at each gear shaft hole, groove and the transition of upper and lower ear. After stress fatigue analysis, the minimum life is located at the gear shaft hole of the shearer shell, and the number of cycles is
| [1] |
赵丽娟,王雅东,张美晨,等. 复杂煤层条件下采煤机自适应截割控制策略[J]. 煤炭学报,2022,47(1):541−563. doi: 10.13225/j.cnki.jccs.yg21.1862
ZHAO Lijuan,WANG Yadong,ZHANG Meichen,et al. Research on self-adaptive cutting control strategy of shearer in complex coal seam[J]. Journal of China Coal Society,2022,47(1):541−563. doi: 10.13225/j.cnki.jccs.yg21.1862
|
| [2] |
赵丽娟,刘旭南,马联伟. 基于经济截割的采煤机运动学参数优化研究[J]. 煤炭学报,2013,38(8):1490−1495. doi: 10.13225/j.cnki.jccs.2013.08.030
ZHAO Lijuan,LIU Xunan,MA Lianwei. Optimization research on shearch on shearer's kinematic parameters based on economical cutting[J]. Journal of China Coal Society,2013,38(8):1490−1495. doi: 10.13225/j.cnki.jccs.2013.08.030
|
| [3] |
赵丽娟,马联伟. 薄煤层采煤机可靠性分析与疲劳寿命预测[J]. 煤炭学报,2013,38(7):1287−1292. doi: 10.13225/j.cnki.jccs.2013.07.031
ZHAO Lijuan,MA Lianwei. Thin seam shearer reliability analysis and fatigue life prediction[J]. Journal of China Coal Society,2013,38(7):1287−1292. doi: 10.13225/j.cnki.jccs.2013.07.031
|
| [4] |
毛 君,苗立野,谢 苗. 采煤机截割部动力学特性及可靠性研究[J]. 机械强度,2015,37(5):880−885. doi: 10.16579/j.issn.1001.9669.2015.05.006
MAO Jun,MIAO Liye,XIE Mao. Research on dynamic characteristic and reliability of shearer cutting unit[J]. Journal of Mechanical Strength,2015,37(5):880−885. doi: 10.16579/j.issn.1001.9669.2015.05.006
|
| [5] |
李 磊. 典型工况下电牵引采煤机截割部动力学分析[D]. 太原:太原理工大学,2018.
LI Lei. Dynamic analysis of cutting unit of electric shearer under typical working condition[D]. Taiyuan:Taiyuan University of Technology,2018.
|
| [6] |
张元常,张大斌,曹 阳,等. 基于DEM与MFBD双向耦合的农机触土部件疲劳分析[J]. 机电工程,2020,37(4):351−358. doi: 10.3969/j.issn.1001-4551.2020.04.003
ZHANG Yuanchang,ZHANG Dabin,CAO Yang,et al. Fatigue analysis of the soil-engaging components of agricultural machinery based on bidirectional coupling of DEM and MFBD[J]. Journal of Mechanical & Electrical Engineering,2020,37(4):351−358. doi: 10.3969/j.issn.1001-4551.2020.04.003
|
| [7] |
张东升,李 岩,宋秋爽. 采煤机刚柔耦合动力学仿真及实验研究[J]. 机械强度,2019,41(4):921−926. doi: 10.16579/j.issn.1001.9669.2019.04.025
ZHANG Dongsheng,LI Yan,SONG Qiushuang. Dynamic simulation and experimental study on rigid-flexible coupling of shearer[J]. Journal of Mechanical Strength,2019,41(4):921−926. doi: 10.16579/j.issn.1001.9669.2019.04.025
|
| [8] |
赵丽娟,孙国强. 基于双向耦合的采煤机截割部振动特性研究[J]. 机械设计,2021,38(2):29−34. doi: 10.13841/j.cnki.jxsj.2021.02.005
ZHAO Lijuan,SUN Guoqiang. Research on the vibration characteristics of the shearer's cutting section based on two-way coupling[J]. Journal of Machine Design,2021,38(2):29−34. doi: 10.13841/j.cnki.jxsj.2021.02.005
|
| [9] |
赵丽娟,闻首杰,刘旭南. 仿真颗粒半径对模拟滚筒截割复杂煤层的影响研究[J]. 机械科学与技术,2020,39(1):52−57. doi: 10.13433/j.cnki.1003-8728.20190090
ZHAO Lijuan,WEN Shoujie,LIU Xu’nan. The influence of simulated particle radius on complex coal seam of drum cutting[J]. Mechanical Science and Technology for Aerospace Engineering,2020,39(1):52−57. doi: 10.13433/j.cnki.1003-8728.20190090
|
| [10] |
王雅东,赵丽娟,张美晨. 采煤机自适应调高控制策略[J]. 煤炭学报,2022,47(9):3505−3522.
WANG Yadong,ZHAO Lijuan,ZHANG Meichen. Research on self-adaptive height adjustment control strategy of shearer[J]. Journal of China Coal Society,2022,47(9):3505−3522.
|
| [11] |
赵丽娟,罗贵恒,刘旭南. 夹矸煤层采煤机斜切进刀过程滚筒载荷特性研究[J]. 煤炭科学技术,2020,48(4):218−223. doi: 10.13199/j.cnki.cst.2020.04.025
ZHAO Lijuan,LUO Guiheng,LIU Xunan. Research on drum load characteristics in oblique cutting process of shearer with coal containing parting[J]. Coal Science and Technology,2020,48(4):218−223. doi: 10.13199/j.cnki.cst.2020.04.025
|
| [12] |
ZHAO L,HAN L,ZHANG H,et al. Dynamic response of a coal rock caving impact tail beam for hydraulic support[J]. Scientific Reports,2022,12(1):11535 doi: 10.1038/s41598-022-15845-9
|
| [13] |
王少杰,殷 月,余圣锋,等. 基于RecurDyn-EDEM的装载机耦合动力学仿真分析[J]. 机械设计,2021,38(11):1−6. doi: 10.13841/j.cnki.jxsj.2021.11.002
WANG Shaojie,YIN Yue,YU Shengfeng,et al. Dynamic analysis on loader coupling based on RecurDyn-EDEM[J]. Journal of Machine Design,2021,38(11):1−6. doi: 10.13841/j.cnki.jxsj.2021.11.002
|
| [14] |
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. doi: 10.13199/j.cnki.cst.2018.08.022
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. doi: 10.13199/j.cnki.cst.2018.08.022
|
| [15] |
赵丽娟,金 鑫,赵宇迪,等. 含夹矸煤层滚筒磨损特性离散元模拟试验分析[J]. 煤炭学报 2020,45(9):3341-3350.
ZHAO Lijuan,JIN Xin,ZHAO Yudi,et al. Discrete element simulation analysis on the wear characteristics of drum in coal seam with gangue[J]. Journal of China Coal Society,2020,45(9):3341-3350.
|
| [16] |
焦文华. 2K-V型减速机传动误差及其摆线轮寿命研究[D]. 郑州:华北水利水电大学,2020.
JIAO Wenhua. Research on transmission error of 2K-V reducer and its cycloid wheel life[D]. Zhengzhou:North China University of Water Resources and Electric Power,2020.
|
| [17] |
谢 波,赵丽娟,屈岳雷. 基于ANSYS和MSC Adams协同仿真的薄煤层采煤机摇臂壳体疲劳分析[J]. 计算机辅助工程,2009,18(2):34−38. doi: 10.3969/j.issn.1006-0871.2009.02.009
XIE Bo,ZHAO Lijuan,QU Yuelei. Fatigue analysis on ranging arm of shearer in thin coal seam based on co-simulation of ANSYS and MSC Adams[J]. Computer Aided Engineering,2009,18(2):34−38. doi: 10.3969/j.issn.1006-0871.2009.02.009
|
| [18] |
赵燕辉. 采煤机摇臂壳体动力学分析及可靠性设计[D]. 沈阳:东北大学,2019.
ZHAO Yanhui. Dynamic analysis and reliability design of the shell of shearer rocker arm[D]. Shenyang:Northeastern University,2019.
|
| [19] |
萧 辉,李国新,周彦均,等. 某发射平台疲劳损伤分析及寿命预测研究[J]. 兵器装备工程学报,2022,43(7):209−216. doi: 10.11809/bqzbgcxb2022.07.032
XIAO Hui,LI Guoxin,ZHOU Yanjun,et al. Structure fatigue damage analysis and fatigue life prediction of launch pad for a launch vehicle[J]. Journal of Ordnance Equipment Engineering,2022,43(7):209−216. doi: 10.11809/bqzbgcxb2022.07.032
|
| [20] |
王晨光. 柴油机做功部件间隙故障机理及联轴器不对中故障自愈研究[D]. 北京:北京化工大学,2021.
WANG Chenguang. Research on the mechanism of the gap failure of diesel engine working components and the self-healing of the coupling misalignment failure[D]. Beijing:Beijing University of Chemical Technolog,2021.
|
| [21] |
岳忠杰. 指向式旋转导向系统偏置心轴的动力学仿真和疲劳特性研究[D]. 北京:中国地质大学(北京),2017.
YUE Zhongjie. Study on dynamic simulation and fatigue characteristics of bias unit in point-to-the-bit rotary[D]. Beijing:China University of Geosciences,Beijing,2017.
|
Supported by: Beijing Renhe Information Technology Co., Ltd. 
DownLoad: