带式输送机改向滚筒的结构参数优化研究

发布时间：2018-04-12 19:43

本文选题：带式输送机 + 改向滚筒　；参考：《辽宁工程技术大学》2015年硕士论文

【摘要】：随着现代工业水平的发展,采矿业机械化程度越来越高,带式输送机得到了普遍应用。其中,滚筒是带式输送机的关键部件,它是一个复杂的组合体,其结构要求具有很高的可靠性。在实际工作过程中,滚筒主要破坏形式是筒体在旋转时承受交替拉伸压缩变形致使焊缝破裂。因此,本文对某直径为1900mm,筒体厚度为35mm的钢绳芯带式输送机的改向滚筒进行研究,利用ANSYS软件对滚筒进行了有限元分析和结构优化设计,并提取了优化结果中的对筒体变形量影响较大的加强环进行结构改进。首先,对带式输送机改向滚筒进行了结构确定。包括了滚筒的全部构件——筒体、滚筒轴、轮毂与轮辐进行了结构设计,并对对称组件的间距进行了计算。其次,利用ANSYS软件对滚筒进行力学分析,找出滚筒焊缝破裂产生的原因,提出加强环的整改措施,并对比改进前后滚筒的分析结果,确保其正确性。再次,对改进后的滚筒进行了优化设计。借助ANSYS软件中的优化模块,选择三个优化设计变量,即筒体的厚度、加强环的长度和厚度,以滚筒的应力为状态变量,总重量为目标函数进行优化。优化后的滚筒既能满足使用要求,又要节省了材料,降低成本。最后,选出优化结果中的加强环的体积参数,再次利用ANSYS软件分析了不同形状结构的加强环对筒体变形量的影响程度,又结合了MATLAB的函数拟合模块求解了最优形状加强环的结构参数,使得滚筒在轻重量的条件下满足使用要求并且筒体变形量最小。综上所述,本文对改向滚筒进行了结构计算,借助ANSYS软件对滚筒进行优化设计并同时应用ANSYS和MATLAB的优化结合,对加强环进行了结构改进。
[Abstract]:With the development of modern industry, the mechanization of mining industry is becoming more and more high, and belt conveyors are widely used.The drum is the key component of belt conveyor, it is a complex combination, and its structure requires high reliability.In the actual working process, the main failure form of the drum is that the cylinder is subjected to alternating tensile compression deformation while rotating, resulting in the fracture of the weld seam.Therefore, in this paper, the redirection drum of a steel rope core belt conveyor with diameter of 1900 mm and thickness of 35mm is studied. The finite element analysis and structural optimization design of the roller are carried out by using ANSYS software.The structural improvement of the stiffening ring which has a great influence on the deformation of the cylinder is extracted from the optimization results.Firstly, the structure of the belt conveyor is determined.Including all the components of the drum-cylinder, roller shaft, hub and spoke structure design, and the distance between the symmetrical components are calculated.Secondly, the mechanical analysis of the cylinder is carried out by using ANSYS software, and the causes of the breakage of the cylinder weld are found out, and the corrective measures of the reinforcing ring are put forward, and the results of the analysis before and after the improvement are compared to ensure its correctness.Thirdly, the optimized design of the improved drum is carried out.With the help of the optimization module in ANSYS software, three optimal design variables are selected, that is, the thickness of the cylinder, the length and thickness of the reinforcing ring, the stress of the drum as the state variable and the total weight as the objective function.The optimized drum can not only meet the requirements of use, but also save materials and reduce the cost.Finally, the volume parameters of the stiffening ring in the optimization result are selected, and the influence of the stiffening ring with different shapes on the deformation of the cylinder is analyzed by using ANSYS software again.The structural parameters of the optimal shape stiffening ring are solved by combining the function fitting module of MATLAB, which makes the drum meet the requirement of light weight and the deformation of the cylinder is minimized.To sum up, the structural calculation of the redirection drum is carried out in this paper, and the structural improvement of the reinforcing ring is carried out by means of the optimization design of the drum with the help of ANSYS software and the optimization combination of ANSYS and MATLAB at the same time.
【学位授予单位】：辽宁工程技术大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TD528.1

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