| 800MN模锻液压机组合预紧机架危险点分析 |
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| 引用本文： | 高璐,崔明亮,赵石岩,金淼. 800MN模锻液压机组合预紧机架危险点分析[J]. 重型机械, 2012, 0(3): 51-54 |
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| 作者姓名： | 高璐 崔明亮 赵石岩 金淼 |
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| 作者单位： | 1. 燕山大学机械工程学院,河北 秦皇岛 066004;中国重型机械研究院有限公司,陕西 西安710032
2. 燕山大学机械工程学院,河北 秦皇岛,066004 |
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| 基金项目： | 国家自然科学基金资助项目(50975248);高档数控机床与基础制造装备科技重大专项(2009ZX04005-011) |
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| 摘 要： | 基于MSC.Marc有限元分析软件,对800 MN模锻液压机组合预紧机架的整体性及各主要构件的破坏危险点进行了研究.结果表明,机架在给定的预紧参数下未发生开缝现象,整体性良好；预紧参数和工作载荷均有可能导致机架局部产生高应力区,易疲劳破坏；大拉杆根部、夹紧梁棱角边、上十字键与C形板的接触边缘以及C形板凹槽等处均是疲劳破坏的危险点,应该予以重点监测.
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| 关 键 词： | 机架 组合预紧结构 整体性 高应力区 危险点 |
Analysis on dangerous points of pre-tightened assembled frame of 800 MN die-forging hydraulic press |
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| GAO Lu , CUI Ming-liang , ZHAO Shi-yan , JIN Miao. Analysis on dangerous points of pre-tightened assembled frame of 800 MN die-forging hydraulic press[J]. Heavy Machinery, 2012, 0(3): 51-54 |
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| Authors: | GAO Lu CUI Ming-liang ZHAO Shi-yan JIN Miao |
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| Affiliation: | 1(1.College of Mechanical Engineering,Yanshan University,Qinhuangdao 066004,China;2.China National Heavy Machinery Research Institute Co.,Ltd.,Xi’an 710032,China) |
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| Abstract: | Based on the finite element analysis software MSC.Marc,the integrity of 800MN die-forging hydraulic press’s pre-tightened assembled frame and the dangerous points of the main parts are studied.The results show that there is no slotted phenomenon in the case of the given pretension parameters for the frame,it means frame’s integrality is in a good condition;both the unreasonable pretension parameters and working load can lead to local high stress area of the frame,which may lead to a fatigue failure;and the areas such as the root of large pull rod,the angular boundary of clamped beam,the edge of the contact zone between C-plate and upper cross bonds,and the grooves of C-plate are the dangerous points of fatigue failure,which should be monitored emphatically. |
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| Keywords: | frame pre-tightened assembled construction integrity high stress area dangerous point |
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