矿用大容量箕斗结构设计及性能分析

发布时间：2018-05-31 00:01

本文选题：箕斗 + 结构设计　；参考：《安徽理工大学》2015年硕士论文

【摘要】：随着我国煤炭行业的飞速发展,矿井年产量不断增加,对提升箕斗容量的要求也在不断提高。然而,国内常用的箕斗额定装载量偏小,单次运输量少、开采效率低,满足不了现在矿井大型化要求。通过实地考察与研究,确定50t箕斗结构,运用三维软件完成模型建立,并用有限元分析软件对箕斗斗箱进行静力学和动力学分析。改进箕斗易损部件的结构,解决了箕斗滞煤、磨损严重的问题；研究设计了大容量箕斗卸载系统,得到曲轨卸载曲线,并对结果进行验证。首先,介绍了国内常用的两类箕斗,通过比较选取上开式曲轨自动卸载扇形闸门箕斗作为研究对象。以某矿井使用的40t特窄型箕斗为基础,研究设计了50t箕斗的结构,并用Solidworks软件进行模型的建立。在箕斗力学理论的基础上,得到箕斗斗箱壁的受力特性曲线,通过Ansys Workbench软件对箕斗斗箱壁进行静力、模态和谐响应分析,并通过改变斗箱壁的厚度和加强筋的间距分析比对确定斗箱设计的合理性。其次,为了防止发生滞煤现象,提高箕斗的抗砸耐磨能力,对箕斗底板、抗砸机构和定量斗拆解结构进行设计,使其更符合实际生产要求。同时对箕斗下滚轮罐耳安装位置进行了改进,通过了解设备的腐蚀特点,采用了防腐措施,增加了箕斗的使用寿命,降低了成本。现在使用的大容量箕斗多采用外动力卸载,而上开式曲轨自动卸载卸载速度快且平稳,整体结构简单。因此,本文对大容量箕斗自动卸载技术进行研究,在曲轨卸载理论的基础上预测了卸载时间,通过理论计算得到了50t箕斗曲轨曲线方程,通过分析计算确定了设计的合理性。
[Abstract]:With the rapid development of coal industry in China, the annual output of coal mine is increasing, and the requirement of raising skip capacity is also increasing. However, the rated load of skip is small, the quantity of single transport is small, and the mining efficiency is low, which can not meet the requirements of large-scale mine. Through field investigation and research, the structure of 50 t skip is determined, and the model is built by using 3D software. The statics and dynamics of skip box are analyzed by finite element analysis software. By improving the structure of the vulnerable parts of the skip, the problem of coal lag and serious wear of the skip is solved, and the unloading system of the large-capacity skip is designed, and the curve of the unloading of the curved rail is obtained, and the results are verified. Firstly, two kinds of skip are introduced, and the fan gate skip is chosen as the research object by comparison. Based on 40t special narrow skip used in a mine, the structure of 50t skip is studied and designed, and the model is built with Solidworks software. Based on the theory of skip mechanics, the stress characteristic curve of skip box wall is obtained. The static force and modal harmonious response of skip box wall are analyzed by Ansys Workbench software. The rationality of bucket box design is determined by changing the thickness of bucket wall and analyzing the distance between reinforcement bars. Secondly, in order to prevent the phenomenon of coal stagnation and improve the anti-abrasion ability of skip, the bottom plate of skip, anti-smashing mechanism and the disassembly structure of quantitative bucket are designed to meet the actual production requirements. At the same time, the installation position of the can ear of the skip lower roller is improved. Through understanding the corrosion characteristics of the equipment, the anticorrosive measures are adopted, which increase the service life of the skip and reduce the cost. Most of the large capacity skips used now use external dynamic unloading, while the automatic unloading speed of the upper open curved rail is fast and stable, and the whole structure is simple. Therefore, in this paper, the automatic unloading technology of large capacity skip is studied, the unloading time is predicted on the basis of the unloading theory of curved rail, the curve equation of 50 t skip curve is obtained by theoretical calculation, and the rationality of design is determined by analysis and calculation.
【学位授予单位】：安徽理工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TD531.1

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