液压圆锥破碎机关键零部件的研究

发布时间：2019-03-13 14:33

【摘要】：液压圆锥破碎机作为矿山、化工、冶金、水泥等重工业重要的生产设备,在生产领域所发挥的作用也越来越突出。破碎机的工作性能直接影响企业的生产效益。但是我国设计的破碎机存在噪声大、振动突出、破碎效率低、关键零部件设计不合理等结构问题。所以对破碎机关键零部件进行理论分析具有十分重要的实际意义。本文以PLM1500I液压圆锥破碎机作为目标对象进行具体的理论研究,本文主要做了如下研究:(1)对层压破碎理论进行研究并计算破碎力。对定锥衬板进行动态特性分析,分析定锥衬板的危险部位,验证是否满足破碎机工作要求。然后对定锥衬板进行模态分析,提取定锥衬板的前6阶模态。防止破碎机的固有频率与定锥衬板的固有频率相近造成共振而降低安全性。(2)对圆柱滚子轴承进行动态特性分析。谐响应分析首先以模态分析为基础,在模态分析的基础上施加载荷进行谐响应分析,得出圆柱滚子轴承在承受一定载荷条件下的结构响应。防止圆柱滚子轴承在承受周期性载荷条件下发生较大变形而降低破碎机使用寿命。(3)对传动系统中的连接件及定锥衬板进行疲劳分析,利用ANSYS-Workbench的疲劳分析模块,得出零件的主要寿命及安全系数云图。疲劳分析对破碎机的设计及优化具有一定的参考意义。(4)对定锥衬板提出了优化设计方案,将定锥衬板优化前后的机械性能进行对比。通过优化提高定锥衬板的使用性能,同时提高破碎机的耐用性。以层压破碎理论为基础,结合ANSYS-Workbench仿真软件对破碎机关键零部件进行有限元分析,减少工厂设计时间同时降低设计成本,这是本文最大的创新点。通过对破碎机关键零部件进行有限元分析,我们得出定锥衬板的设计及使用符合要求且不会发生共振想象。同时对定锥衬板结构进行了优化,得出优化后的性能更为优越。圆柱滚子轴承在承受一定周期性载荷条件下不会产生较大变形,轴承的选择符合破碎机的设计要求。连接件作为传动系统中重要的零件,疲劳特性符合破碎机工作要求。
[Abstract]:Hydraulic cone crusher, as an important production equipment in heavy industry such as mine, chemical industry, metallurgy, cement and so on, plays a more and more important role in the field of production. The working performance of the crusher has a direct impact on the production efficiency of the enterprise. But the crusher designed in our country has some structural problems, such as high noise, outstanding vibration, low crushing efficiency and unreasonable design of key parts. So the theoretical analysis of the key parts of the crusher has very important practical significance. This paper takes the PLM1500I hydraulic cone crusher as the target object to carry on the concrete theoretical research, this paper mainly has done the following research: (1) carries on the research to the laminate crushing theory and calculates the breaking force. The dynamic characteristics of the fixed cone liner are analyzed, the dangerous parts of the fixed cone liner are analyzed, and the working requirements of the crusher are verified. Then the first six modes of the fixed cone liner are extracted by modal analysis. The natural frequency of the crusher and the natural frequency of the fixed cone liner are similar to those of the fixed cone liner to prevent resonance and reduce the safety. (2) the dynamic characteristics of the cylindrical roller bearing are analyzed. On the basis of modal analysis, harmonic response analysis is carried out on the basis of modal analysis, and the structural response of cylindrical roller bearings under certain loading conditions is obtained. The cylindrical roller bearing is prevented from deforming and reducing the service life of crusher under the condition of periodic load. (3) the fatigue analysis of the connecting parts and the fixed cone lining plate in the transmission system is carried out, and the fatigue analysis module of ANSYS-Workbench is used. The main life and safety factor cloud diagram of the parts are obtained. Fatigue analysis has certain reference significance to the design and optimization of crusher. (4) the optimum design scheme of fixed cone lining plate is put forward, and the mechanical properties of fixed cone liner plate before and after optimization are compared. Through optimization, the performance of fixed cone liner is improved and the durability of crusher is improved at the same time. Based on the theory of laminate crushing, the finite element analysis of the key parts of the crusher is carried out with ANSYS-Workbench simulation software to reduce the design time and design cost. This is the biggest innovation of this paper. Through the finite element analysis of the key parts of the crusher, we get the conclusion that the design and use of the fixed cone liner meet the requirements and no resonance imagination will occur. At the same time, the structure of fixed cone lining plate is optimized, and the optimized performance is more superior. Cylindrical roller bearing does not produce large deformation under a certain periodic load, and the selection of bearing accords with the design requirements of crusher. As an important part of the transmission system, the fatigue characteristic of the connector meets the working requirements of the crusher.
【学位授予单位】：湖北工业大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TH69

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