斗轮堆取料机轮体结构优化及可靠性分析
发布时间：2018-09-14 11:39
【摘要】：斗轮堆取料机是目前世界通用的大型连续式散料处理成套设备,由于它属于连续生产机械,生产率高,越来越受到世界各国的重视,目前,已广泛应用于矿山、冶金、电力、交通、建材和化工等领域的大型露天矿储料场、仓库、发电厂、煤气厂和大型港口码头等场所。其中,悬臂式斗轮堆取料机以工作结构动作灵活、作业范围广和对场地要求相对较低等优点,成为目前最为常用的结构形式。它是由斗轮机构、前臂架、立柱、平衡机构、回转机构、门座、走行机构和尾车等组成。其中斗轮机构是其实现取料功能的主要部件,它位于悬臂的最前端,其重量直接影响到整机的重量和平衡,因此它的轻量化对于整机的轻量化设计有着重要意义。本文的目的就在于获得一个优化的斗轮轮体。 本文在有限元分析软件ansys的平台上运用渐进拓扑优化方法(ESO)对斗轮轮体进行拓扑优化,得出最佳的轮体材料分布模型,采用应变能密度作为单元删除准则,并运用了棋盘格控制方法,取得了较好的结果。接着对拓扑优化结果进行简化,提出了优化原始模型——弧形轮辐轮体模型,同时考虑到加工制造问题,并结合以往设计经验,提出另一种模型—直轮辐轮体模型,并利用ansys白带的尺寸优化方法——子问题法,扫描法和一阶方法,分别对两种模型进行优化,得出最优轮体尺寸,并最终确定直轮辐轮体作为最终优化结果。然后利用ansys对轮体进行瞬态分析和可靠性分析,证明优化结果模型能够满足使用要求。 最后对斗轮进行了应力测试,将结果和有限元分析结果进行对比,验证了文中有限元分析的正确性。斗轮优化分析结果运用于实际,较相同取料能力机型重量有了大幅减轻,现场斗轮机构运行平稳,证明了该方法的有效性。
[Abstract]:Bucket wheel stacker-reclaimer is a set of large-scale continuous bulk material handling equipment in the world at present. Because it belongs to continuous production machinery with high productivity, it has been paid more and more attention by all countries in the world. At present, it has been widely used in large open-pit mineral storage yards, warehouses, power plants, gas plants and other fields, such as mining, metallurgy, power, transportation, building materials and chemical industry. Among them, the cantilever bucket wheel stacker and Reclaimer has become the most commonly used structure because of its flexible working structure, wide operating range and relatively low site requirements. Bucket wheel mechanism is the main component to realize the reclaiming function. It is located at the front of the cantilever. Its weight directly affects the weight and balance of the whole machine. Therefore, its lightweight is of great significance to the lightweight design of the whole machine.
In this paper, the progressive topology optimization (ESO) method is used to optimize the topology of bucket wheel on the platform of the finite element analysis software ansys. The optimal material distribution model of bucket wheel is obtained. The strain energy density is used as the deletion criterion of the element, and the checkerboard control method is used. The results of topology optimization are simplified. In this paper, the original optimization model, arc spoke body model, is put forward. Considering the problem of machining and manufacturing, and combining with previous design experience, another model, straight spoke body model, is put forward. The optimum wheel body size is determined as the final optimization result. Then the transient analysis and reliability analysis of the wheel body are carried out by using ansys, which proves that the optimized result model can meet the requirements.
Finally, the stress of bucket wheel is tested, and the results are compared with the results of finite element analysis to verify the correctness of the finite element analysis.
【学位授予单位】：中南大学
【学位级别】：硕士
【学位授予年份】：2011
【分类号】：TH246
本文编号：2242605
[Abstract]:Bucket wheel stacker-reclaimer is a set of large-scale continuous bulk material handling equipment in the world at present. Because it belongs to continuous production machinery with high productivity, it has been paid more and more attention by all countries in the world. At present, it has been widely used in large open-pit mineral storage yards, warehouses, power plants, gas plants and other fields, such as mining, metallurgy, power, transportation, building materials and chemical industry. Among them, the cantilever bucket wheel stacker and Reclaimer has become the most commonly used structure because of its flexible working structure, wide operating range and relatively low site requirements. Bucket wheel mechanism is the main component to realize the reclaiming function. It is located at the front of the cantilever. Its weight directly affects the weight and balance of the whole machine. Therefore, its lightweight is of great significance to the lightweight design of the whole machine.
In this paper, the progressive topology optimization (ESO) method is used to optimize the topology of bucket wheel on the platform of the finite element analysis software ansys. The optimal material distribution model of bucket wheel is obtained. The strain energy density is used as the deletion criterion of the element, and the checkerboard control method is used. The results of topology optimization are simplified. In this paper, the original optimization model, arc spoke body model, is put forward. Considering the problem of machining and manufacturing, and combining with previous design experience, another model, straight spoke body model, is put forward. The optimum wheel body size is determined as the final optimization result. Then the transient analysis and reliability analysis of the wheel body are carried out by using ansys, which proves that the optimized result model can meet the requirements.
Finally, the stress of bucket wheel is tested, and the results are compared with the results of finite element analysis to verify the correctness of the finite element analysis.
【学位授予单位】：中南大学
【学位级别】：硕士
【学位授予年份】：2011
【分类号】：TH246
【引证文献】
相关硕士学位论文 前2条
1 李林林;自行火炮身管优化方法及应用研究[D];南京理工大学;2013年
2 冯东拴;斗轮堆取料机控制系统优化及应用研究[D];燕山大学;2013年
，本文编号：2242605
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