矿用蓄电池搬运车动力学分析及机架优化设计
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摘要
基于虚拟样机技术对某型蓄电池支架搬运车进行了多体动力学分析,获得了车辆满载平路、满载爬10°坡、满载低速通过深100mm沟壕路面三种典型工况下的运动学及动力学相关参数及各部件的受力状态。并以最恶劣的第三种过壕沟路面工况仿真结果为载荷依据,在有限元软件中对整车机架进行了强度分析,找出了前、中、后三段机架设计的缺陷部位,并通过增加结构性筋板、减小板材厚度、加开减重孔的方式减小了应力集中,提高了机架的结构强度,在满足使用要求及材料许用应力的前提下三个机架总减重达22%。该车经过一年多的煤矿井下工业性试验,机架强度完全满足现场使用要求,为同类车型的动力学分析及结构优化设计提供了参考依据。
Based on the virtual prototyping technology,the multi-body dynamics analysis of a battery support carrier vehicle is carried out in three typical working conditions,including full-load driving on flat road and full-load climbing 10° slope,and passing 100 mm trench. Kinematics and dynamics parameters of the three working conditions are analyzed. Based on the worst simulation results of the third condition,the strength of the whole frame is analyzed in the finite element software,and the defective parts of the front,middle and rear frame are found out. The stress concentration is reduced by increasing the structural stiffener plate,reducing the thickness of the plate and opening the weight reducing hole. The structural strength of the rack is improved,and the total weight loss of the three racks is 22% under the premise of meeting the service requirements and allowable stress of the materials. After more than one year of industrial test in coal mine,the frame strength fully meets the requirements of field use,which provides references for dynamic analysis and structural optimization design of similar vehicles.
Based on the virtual prototyping technology,the multi-body dynamics analysis of a battery support carrier vehicle is carried out in three typical working conditions,including full-load driving on flat road and full-load climbing 10° slope,and passing 100 mm trench. Kinematics and dynamics parameters of the three working conditions are analyzed. Based on the worst simulation results of the third condition,the strength of the whole frame is analyzed in the finite element software,and the defective parts of the front,middle and rear frame are found out. The stress concentration is reduced by increasing the structural stiffener plate,reducing the thickness of the plate and opening the weight reducing hole. The structural strength of the rack is improved,and the total weight loss of the three racks is 22% under the premise of meeting the service requirements and allowable stress of the materials. After more than one year of industrial test in coal mine,the frame strength fully meets the requirements of field use,which provides references for dynamic analysis and structural optimization design of similar vehicles.
引文
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[2]张勇.矿用防爆锂电池无轨胶轮车安全性能技术分析[J].煤炭科学技术,2017,45(7):123-126.
[3]梁玉芳,杨小凤.煤矿用电动无轨胶轮车车身轻量化技术研究[J].煤炭技术,2015,34(6):224-226.
[4]笪颖帆.铰接式电动轮自卸车动力学建模与仿真分析[D].成都:西南交通大学,2015.
[5]赵丽娟,刘杰.复杂机电系统的建模与仿真研究[M].沈阳:辽宁大学出版社,2007.
[6]浦广益. ANSYS Workbench 12基础教程与实例详解[M].中国水利水电出版社,2010:65-88.
[7]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.
[8]王治伟,常凯.重载支架搬运车轮边减速器承载轴壳的结构强度分析[J].煤矿机械,2011(7):98-99.
[9]蒙秋红,邓颖章,张丽.装载机销轴断裂分析[J].失效分析与预防,2009(8):156-160.
[10]何景强.某型矿用铰接轴断裂失效分析及改进[J].制造业自动化,2015,37(4):107-109.
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