液压圆锥破碎机动态分析

发布时间：2018-04-18 00:19

本文选题：液压圆锥破碎机 + 滞回非线性模型　；参考：《华北理工大学》2015年硕士论文

【摘要】：液压圆锥破碎机是矿山、筑路等工业广泛应用的机械设备,具有高效率、高破碎比、高生产率、破碎颗粒度均匀等特点,应用十分广泛。详细了解国内外液压圆锥破碎机的发展情况,为破碎机研究做准备。初步掌握国外液压圆锥破碎机具有自动过载保护、破碎产品粒度均匀、生产率高等功能,使工作性能大大提高,改善产品质量,而国内一直处于仿制阶段,技术水平有限,其设计比较保守、机器笨重,与国外相比效率较低、破碎产品差距较大。对液压圆锥破碎机运动学进行了分析,并对其动锥摆动次数、生产率及电动机功率进行相关推导得到公式,对动锥稳定性进行分析设计。对滞后非线性模型进行研究,建立了柱坐标系下的滞回力模型,对液压圆锥破碎机动力学进行分析,建立了基于柱坐标系的液压圆锥破碎机动力学模型,运用MATLAB软件进行计算,得到动锥幅频响应曲线。分析结果表明:动锥的运动形式为非线性振动,其与定锥之间考虑到阻尼等因素存在一定的相位差,并不保持同步的运动;动锥运动的位移以及速度相对定锥来讲都比较大,是振动破碎过程中的主要因素,起主导作用,液压圆锥破碎机正是主要依靠动锥的高频冲击振动来进行物料的破碎作业。应用ANSYS Workbench对液压圆锥破碎机的主要零件进行静力分析,并获得其工作状态下的应力应变图。分析结果表明:动锥最大等效应力发生在动锥与主轴接触的内壁上边缘处和动锥破碎区域下边缘;定锥的最大等效应力发生在其破碎区最大载荷点处,并且各零件的强度以及刚度均满足设计要求。
[Abstract]:Hydraulic cone crusher is widely used in mining, road construction and other industries. It has the characteristics of high efficiency, high crushing ratio, high productivity, uniform particle size and so on.Understand the development of hydraulic cone crusher at home and abroad and prepare for the research of crusher.Master the foreign hydraulic cone crusher with the functions of automatic overload protection, uniform particle size and high productivity, so that the working performance is greatly improved and the product quality is improved. However, the domestic hydraulic cone crusher has been in the stage of imitation, and the technical level is limited.The design is conservative, the machine is heavy, the efficiency is low compared with foreign countries, and the gap of broken products is big.The kinematics of hydraulic cone crusher is analyzed, and the formula of its swing times, productivity and motor power is derived, and the stability of moving cone is analyzed and designed.The hysteretic force model in cylindrical coordinate system is established, the dynamics of hydraulic cone crusher is analyzed, the dynamic model of hydraulic cone crusher based on cylindrical coordinate system is established, and the calculation is carried out by using MATLAB software.The amplitude-frequency response curve of moving cone is obtained.The results show that the motion form of the moving cone is nonlinear vibration, and there is a certain phase difference between the moving cone and the fixed cone considering the damping and other factors, and the motion of the moving cone is not synchronized, the displacement and velocity of the moving cone are relatively large compared to the constant cone.Hydraulic cone crusher is the main factor in the process of vibration crushing. The hydraulic cone crusher mainly relies on the high frequency shock vibration of the moving cone to carry on the crushing operation of the material.The static analysis of the main parts of the hydraulic cone crusher is carried out by ANSYS Workbench, and the stress-strain diagram of the hydraulic cone crusher is obtained.The results show that the maximum equivalent stress of the moving cone occurs at the upper edge of the inner wall of the contact between the moving cone and the spindle and the lower edge of the broken area of the moving cone, and the maximum equivalent stress of the fixed cone occurs at the point of the maximum load in the fracture zone.And the strength and stiffness of each part meet the design requirements.
【学位授予单位】：华北理工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TD451

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