圆锥破碎机挤压破碎力建模及性能仿真研究

发布时间：2018-08-09 18:09

【摘要】：圆锥破碎机机是一种实现“多碎少磨”的物料粉碎设备,其能耗低、粉碎效率高,广泛应用于道路、建筑和矿山等行业。就圆锥破碎机研究而言,如何提高生产率、降低能耗、提高寿命是关注的重点,破碎机的挤压破碎力影响设备工作性能,破碎力的研究对于整机的动力学性能分析和破碎部件的磨损分析,都具有重要的意义。论文分析现有破碎力计算方法及其不足之处,基于实物挤压破碎试验,建立挤压破碎力多因素求解模型,为圆锥破碎机整机工作性能分析和腔型优化设计提供破碎力计算方法:首先,基于圆锥破碎机层压破碎工作原理,对破碎腔内散体物料的运动和腔形分层情况进行分析,探讨挤压破碎力的关键影响因素。对破碎机破碎行为进行深入的研究,分析物料抗压强度、压缩比和粒度分布这三个因素分别对破碎力的影响,建立挤压破碎力的三因素影响数学模型。其次,利用岩石力学试验系统对岩石物料进行挤压破碎过程的力学试验研究,对试验数据进行回归分析,求解出挤压破碎力数学模型中的各个参数。基于物料分层情况,对破碎载荷的分布进行了详细的求解。并运用破碎力数学模型求解得到的破碎腔内的破碎力的分布与实际生产中的破碎力的分布情况进行对比,验证所建立的破碎力模型的准确可靠性。最后,运用Adams软件建立圆锥破碎机的虚拟样机模型,挤压破碎力作为仿真模型的输入,仿真求解不同物料下的破碎机运动学/动力学结果,获得动锥自转转速和摩擦副载荷,以期在设计阶段确定最优的结构参数和工作参数。圆锥破碎机挤压破碎力的数学模型的建立及力学仿真分析为破碎机的结构设计及运动学动力学仿真分析都提供了依据,对破碎机的进一步发展优化设计都具有重要的指导意义和参考价值。
[Abstract]:Conical crusher is a kind of material crushing equipment, which has the advantages of low energy consumption and high comminution efficiency. It is widely used in road, construction and mining industries. As far as the research of cone crusher is concerned, how to increase productivity, reduce energy consumption and increase service life is the focus of attention. The crushing force of crusher affects the working performance of equipment. The study of crushing force is of great significance to the analysis of the dynamic performance of the whole machine and the wear analysis of the broken parts. In this paper, the existing crushing force calculation methods and their shortcomings are analyzed. Based on the actual crushing test, a multi-factor model for calculating the crushing force is established. This paper provides a method for the analysis of the working performance of the cone crusher and the optimum design of the cavity shape. Firstly, based on the working principle of laminated crushing of the cone crusher, the movement of the bulk material and the stratification of the cavity in the chamber are analyzed. The key influencing factors of extrusion crushing force are discussed. The crushing behavior of crusher was studied in depth. The influence of three factors on crushing force, such as compressive strength, compression ratio and particle size distribution, was analyzed, and the mathematical model of three factors influencing crushing force was established. Secondly, using the rock mechanics test system to carry on the mechanical test research to the rock material extrusion crushing process, carries on the regression analysis to the test data, solves each parameter in the extrusion crushing force mathematical model. Based on the case of material stratification, the distribution of crushing load is solved in detail. The distribution of crushing force in crushing cavity is compared with that in actual production by using the mathematical model of crushing force to verify the accuracy and reliability of the model. Finally, the virtual prototype model of the cone crusher is established by using Adams software. The extrusion force is used as the input of the simulation model. The kinematics / dynamics results of the crusher under different materials are simulated, and the rotational speed of the moving cone and the friction load are obtained. In order to determine the optimal structural parameters and working parameters in the design phase. The establishment of mathematical model and mechanical simulation analysis of the crushing force of cone crusher provides the basis for the structural design and kinematics simulation analysis of the crusher. It has important guiding significance and reference value for further development and optimization design of crusher.
【学位授予单位】：燕山大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TD451;TP391.9

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