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张德,邹树梁,唐德文,谢宇鹏,颜亮.防辐射挖掘机屏蔽门的结构设计及其模态分析[J].南华大学学报(自然科学版),2015,29(1):64~70.[ZHANG De,ZOU Shu-liang,TANG De-wen,XIE Yu-peng,YAN Liang.Structural Design and Modal Analysis for Shielding Door of the Anti-Radiation Excavator[J].Journal of University of South China(Science and Technology),2015,29(1):64~70.]

防辐射挖掘机屏蔽门的结构设计及其模态分析

Structural Design and Modal Analysis for Shielding Door of the Anti-Radiation Excavator

投稿时间：2014-08-06

DOI：

中文关键词: 屏蔽门屏蔽设计减震设计模态分析

英文关键词:shielding door shielding design seismic absorption design modal analysis

基金项目:湖南省科技重大专项基金资助项目(2012FJ1007);高等学校博士学科点专项科研基金资助项目(20134324110001);中国博士后面上基金资助项目(2013M542123)

作者	单位
张德	南华大学机械工程学院,湖南衡阳 421001 核设施应急安全技术与装备湖南省重点实验室,湖南衡阳 421001
邹树梁	核设施应急安全技术与装备湖南省重点实验室,湖南衡阳 421001
唐德文	南华大学机械工程学院,湖南衡阳 421001 核设施应急安全技术与装备湖南省重点实验室,湖南衡阳 421001
谢宇鹏	南华大学机械工程学院,湖南衡阳 421001 核设施应急安全技术与装备湖南省重点实验室,湖南衡阳 421001
颜亮	南华大学机械工程学院,湖南衡阳 421001 核设施应急安全技术与装备湖南省重点实验室,湖南衡阳 421001

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中文摘要:

对防辐射挖掘机屏蔽门进行了屏蔽设计与减震设计,以确保工作人员4 h内接受辐射剂量在91.3 μSv以内,且在正常工作时铅玻璃不会由于振动而被破坏.屏蔽门门板采用“灌铅结构”,铅板厚度为22 mm,门玻璃选用ZF₆铅玻璃,厚度为60 mm.屏蔽门减震设计采用弹簧减震和橡胶减震相结合的方法,并对铅玻璃进行抗震性能实验,实验表明:在弹簧最大变形量时,铅玻璃不会由于振动而被破坏.对屏蔽门进行模态分析,分析结果表明:屏蔽门左下角为其薄弱环节,为屏蔽门后续的结构优化提供参考.

英文摘要:

Shielding design and seismic design were both applied to the shielding door of the anti-radiation excavator to make sure that the radiation dose exposed to staff members will be less than 91.3 μSv within 4hours,and that the lead glass will be free from any damage due to vibration while functioning.The way of pouring lead into the steel box was adopted to design the shielding door plank.It was figured out that the thickness of the lead plate was 22 mm,the thickness of the glass,whose model is ZF₆,was 60 mm.The spring damping structure and rubber damping structure was used to the seismic design of the shielding door,and the damping performance test of the lead glass was conducted.The experimental results show that the lead glass will not be damaged because of vibration when the spring is in its maximum deformation.Finally,Modal analysis was carried out on the shielding door whose simulation results indicated that there was weak point in its lower-left corner,and this also provided references for the structural optimization of the shielding door.

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