颚式破碎机运动学和动力学参数设计与优化

发布时间：2018-04-08 18:08

本文选题：复摆颚式破碎机　切入点：运动学参数优化　出处：《沈阳理工大学》2015年硕士论文

【摘要】：动颚是否具有良好的运动特性是确定复摆颚式破碎机性能优劣的根本因素,改善动颚的运动特性需借助对运动机构参数优化来完成,故对运动机构尺寸参数的优化设计成了产品性能高效的关键;且复摆颚式破碎机工作期间动颚产生很大周期性波动的惯性力,该惯性力是引起破碎机振动的主要激励,不仅加剧运动副磨损,降低破碎机轴承和肘板的使用寿命,而且限制了破碎机在移动式破碎站上的应用:因此有必要对复摆颚式破碎机的运动学和动力学特性进行研究。(1)本文以PE-1007型复摆颚式破碎机为例,基于MATLAB软件对其进行了运动学与动力学参数优化,优化结果表明:排料口处的特性值为1.697,与此型号传统破碎机相比减小了50%,优化效果明显,达到了提高机构运动特性,减轻齿板磨损的预期效果;机架最大水平振动力由33076N下降到9523N,减少了71.2%,振动幅度减少了77.5%,很大程度上削弱了破碎机的冲击、振动和噪音,提高了轴承和肘板的使用寿命,为实现无地脚安装提供理论依据。(2)在Solid Works 2012软件环境下完成了PE-1007型复摆颚式破碎机运动机构三维模型,经装配模型干涉分析显示零件设计和配合正确无误,为破碎机的动力学仿真提供了保障。(3)在Adams环境下对PE-1007型破碎机样机模型进行了仿真,测量结果分析表明,动颚排料口行程特性值和质心加速度与解析法得出的理论值基本一致,动颚具有良好的运动特性,样机模型设计合理;以Adams为实验平台,通过正交实验得出了各配重平衡机架振动力效果的主次顺序及使振动最小的最优组合,最优组合下所测振动力为8493N,在解析法优化振动的基础上减少了10.8%,得出的结果对企业生产具有指导意义。
[Abstract]:Whether the moving jaw has good motion characteristics is the basic factor to determine the performance of the compound pendulum jaw crusher.It not only increases the wear of motion pairs, but also reduces the service life of crusher bearings and elbows.Furthermore, the application of crusher in mobile crusher station is limited: therefore, it is necessary to study the kinematics and dynamic characteristics of compound pendulum jaw crusher.) this paper takes PE-1007 type compound pendulum jaw crusher as an example.The kinematics and dynamics parameters are optimized based on MATLAB software. The results show that the characteristic value at the discharge port is 1.697. Compared with the traditional crusher, the characteristic value is reduced by 50%, the optimization effect is obvious, and the kinematic characteristic of the mechanism is improved.The expected effect of reducing the wear of the gear plate; the maximum horizontal vibration force of the rack was reduced from 33076N to 9523N, the maximum vibration force was reduced by 71.2%, the vibration amplitude was reduced by 77.5%, the impact, vibration and noise of the crusher were greatly weakened, and the service life of the bearings and elbows was improved.In order to provide theoretical basis for installation without ground foot, 3D model of movement mechanism of PE-1007 compound pendulum jaw crusher is completed under Solid Works 2012 software environment. The interference analysis of assembly model shows that the design and fit of parts are correct.The vibration force measured under the optimal combination is 8493N, which is reduced by 10.8 on the basis of the optimization of vibration by analytical method. The results obtained are of guiding significance to the production of enterprises.
【学位授予单位】：沈阳理工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TD451

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