挖掘机辊式破碎筛分铲斗的设计与研究

发布时间：2018-06-14 11:14

本文选题：辊式破碎筛分铲斗 + 废弃混凝土　；参考：《太原科技大学》2017年硕士论文

【摘要】：设计一种可搭载于液压挖掘机工作装置上的破碎筛分铲斗,用于灵活破碎年产生量巨大且散布于城市的建筑废弃物。依托于具有高机动性能的液压挖掘机载体,突出破碎筛分铲斗相较于传统大型破碎设备对城市复杂作业环境的高度适应性。本文从废弃混凝土的物料性能及常用破碎方法和设备入手,对适用于破碎铲斗的破碎原理进行对比分析,确定研究主体为挖掘机辊式破碎筛分铲斗,进而对其结构组成、工作流程及性能特点分别进行阐述。通过对挖掘机辊式破碎筛分铲斗主要工作参数的计算,完成其与载体挖掘机的质量及动力参数匹配。应用Pro/Engineer Wildfire5.0三维建模软件对挖掘机辊式破碎筛分铲斗进行三维实体建模与运动仿真分析,验证其结构及运动的合理性。在此基础上,重点借助于离散元素法及EDEM离散元分析软件,建立待破碎物料及辊式破碎筛分铲斗的参数化模型,对挖掘机辊式破碎筛分铲斗破碎废弃混凝土物料的工作过程进行仿真,并得出满载破碎过程中破碎辊所受的最大轴向力,进而可借助于有限单元法及ANSYS有限元分析软件,对应用辊式破碎筛分原理的铲斗体外壳进行结构强度校核,得到铲斗体在静力学条件下的等效应力及整体变形情况,并根据分析结果进行相应的结构优化,力求在设计阶段论证铲斗体的结构稳定性,为挖掘机辊式破碎筛分铲斗的正常工作提供基础保障。挖掘机辊式破碎筛分铲斗是一种区别于现有固定式或自移式破碎设备,以高机动性、高效性、绿色化作业为特点的破碎筛分装置,优化了固体废弃物,特别是城市建筑废弃物的处理流程,在创造新价值的同时也减小了自然资源消耗及自然环境污染等问题。
[Abstract]:A crushing sieve bucket, which can be mounted on the working device of hydraulic excavator, is designed, which can be used for flexible crushing of construction waste with large annual production and scattered in the city. Based on the hydraulic excavator carrier with high mobility, the high adaptability of crushing sieve bucket to the complex working environment of the city compared with the traditional large crushing equipment is highlighted. Starting with the material performance of waste concrete and the commonly used crushing methods and equipment, this paper makes a comparative analysis of the crushing principle suitable for the crushing bucket, and determines that the main body of the study is the excavator roller crushing sieve bucket, and then the structure composition of the bucket is determined. Work flow and performance characteristics are described respectively. Through the calculation of the main working parameters of the roller crushing sieve bucket of the excavator, the quality and dynamic parameters of the excavator are matched with those of the carrier excavator. Using Pro-engineer Wildfire 5.0 3D modeling software, the 3D solid modeling and motion simulation analysis of the roller crushing sieve bucket of excavator are carried out, and the rationality of its structure and motion is verified. On this basis, the parameterized model of material to be broken and roller crushing sieve bucket is established by means of discrete element method and EDEM discrete element analysis software. In this paper, the working process of crushing abandoned concrete material by roller crushing sieve bucket of excavator is simulated, and the maximum axial force of crushing roller in the process of full load crushing is obtained, which can be obtained by means of finite element method and ANSYS finite element analysis software. By checking the structure strength of bucket shell with roller crushing and screening principle, the equivalent stress and integral deformation of bucket body under static condition are obtained, and the corresponding structural optimization is carried out according to the analysis results. The structural stability of bucket body is demonstrated in the design stage to provide basic guarantee for the normal work of roller crushing sieve bucket of excavator. The roller crushing sieve bucket of excavator is different from the existing fixed or self-moving crushing equipment. It is characterized by high mobility, high efficiency and green operation, and the solid waste is optimized. Especially, the disposal process of urban construction wastes not only creates new value, but also reduces the consumption of natural resources and natural environment pollution.
【学位授予单位】：太原科技大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TU621

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