露天钻机钻架结构的力学行为分析及优化
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摘要
针对国产矿用钻机钻架在工作过程中因承受多种静、动载荷的作用,易出现弯曲、断裂的问题,采用ANSYS软件,对3种不同工况下钻架结构的力学行为进行分析,得出应力和变形分布规律.在此基础上提出4种改进方案.结果表明:钻架结构中横撑及斜撑的尺寸、重量、重心分布及连接方式在很大程度上影响钻架力学行为,优化钻架结构可提高整体承载能力.四种改进方案中,方案四最大应力值降幅达33%,安全系数由1.1提升至1.7,且重量减轻16%.现场应用验证了此优化方案的合理性与可行性.
For the issues of that when absorbing various static and dynamic loads at work, the domestic mine drilling frame may bend and break, drilling frame mechanical behavior are analyzed in three kinds of different conditions using ANSYS, and the distribution regularity of stress and deformation are obtained. On this basis, four improved schemes are put forward. The results show that size, weight, center of gravity distribution and connection mode of the beam and the oblique beam in drilling frame structure, effect mechanical behavior of drilling frame to a large extent. Optimization of drilling frame structure can improve the overall carrying capacity. Scheme four of the four the maximum stress value amounting 33%, the safety coefficient is improved from 1.1 to 1.7, and to reduce the weight of 16%. Field application verified that the rationality and feasibility of the optimization scheme.
For the issues of that when absorbing various static and dynamic loads at work, the domestic mine drilling frame may bend and break, drilling frame mechanical behavior are analyzed in three kinds of different conditions using ANSYS, and the distribution regularity of stress and deformation are obtained. On this basis, four improved schemes are put forward. The results show that size, weight, center of gravity distribution and connection mode of the beam and the oblique beam in drilling frame structure, effect mechanical behavior of drilling frame to a large extent. Optimization of drilling frame structure can improve the overall carrying capacity. Scheme four of the four the maximum stress value amounting 33%, the safety coefficient is improved from 1.1 to 1.7, and to reduce the weight of 16%. Field application verified that the rationality and feasibility of the optimization scheme.
引文
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[10]唐田秋,陈利平,邢春太.YZ-35C牙轮钻机钻架有限元分析及结构优化设计[J].煤矿机械,2005(1):5-7.TANG Tianqiu,CHEN Liping,XING Chuntai.YZ-35C finite element analysis and structural optimization design for rotary drill frame[J].Coal Mine Machinery,2005(1):5-7.
[11]夏建芳,刘哲明.桁架起重机主梁强度分析与结构优化[J].研究探讨,2007(3):24-26.XIA Jianfang,LIU Zheming.Strength analysis and structural optimization for truss crane girder[J].Study and Discuss,2007(3):24-26.
[2]吕文玉.国内外薄煤层开采技术和设备的现状及其发展[J].中国矿业,2009,18(11):60-62.LV Wenyu.The present situation and future development of the world thin coal seam mining technology and equipment[J].China Mining Magazine,2009,18(11):60-62.
[3]赖茂河,刘立杨,春晖,等.基于Cosmos/Works的牙轮钻机钻架结构强度分析[J].冶金设备,2007(6):26-29.LAI Maohe,LIU Liyang,CHUN Hui,et al.The intensity analysis is of frame for gear driller based on cosmos/Works Software[J].Metallurgical Equipment,2007(6):26-29.
[4]韩新平,靳春华,苏荣华.露天矿用钻机钻架结构强度[J].辽宁工程技术大学学报(自然科学版),2013,32(2):145-148.HAN Xinping,JIN Chunhua,SU Ronghua.Structural strength analysis of drilling frame for open-pit[J].Journal of Liaoning Technical University(Natural Science),2013,32(2):145-148.
[5]何小平,李东明,闫杰,等.潜孔钻机钻架结构的有限元分析[J].露天采矿技术,2013(4):40-42.HE Xiaoping,LI Dongming,YAN Jie,et al.Finite element analysis submersible drilling rig drilling frame structure[J].Opencast Mining Technology,2013(4):40-42.
[6]TOHGO Keiichiro,OHGUMA Tomoya.FEM Analysis Study on Fatigue Strength and Fracture Morphology in Spot welded Joints of Structural Steels[J].Journal of the Society of Materials Science.2009,58(7):627-634.
[7]李松虎,胡宏涛.DZ-100型潜孔钻机机架的改进与应用[J].煤炭技术,2006,25(1):16-17.LI Songhu,HU Hongtao.DZ-100 dives the hole drilling machine rack improvement and application[J].Coal Technology,2006,25(1):16-17.
[8]杜宝江,陈长松,吴恩启等.基于ANSYS梁单元与实体单元的组合建模研究[J].机械设计与研究,2013,29(4):61-63.DU Baojiang,CHEN Changsong,WU Enqi,et al.Compositional modeling research of beam elements and solid elements based on ANSYS[J].Machine Design and Research,2013,29(4):61-63.
[9]蒋薇,易先中,胡德祥.JJ225/42-KC型石油钻机井架结构强度分析[J].石油机械,2012,40(2):22-25.JIANG Wei,YI Xianzhong,HU Dexiang.JJ225/42-KC oil rig derrick structural strength analysis[J].Petroleum Machinery,2012,40(2):22-25.
[10]唐田秋,陈利平,邢春太.YZ-35C牙轮钻机钻架有限元分析及结构优化设计[J].煤矿机械,2005(1):5-7.TANG Tianqiu,CHEN Liping,XING Chuntai.YZ-35C finite element analysis and structural optimization design for rotary drill frame[J].Coal Mine Machinery,2005(1):5-7.
[11]夏建芳,刘哲明.桁架起重机主梁强度分析与结构优化[J].研究探讨,2007(3):24-26.XIA Jianfang,LIU Zheming.Strength analysis and structural optimization for truss crane girder[J].Study and Discuss,2007(3):24-26.