大型平底筒仓埋刮板式清仓装置结构与动力特性研究

发布时间：2018-04-01 20:20

本文选题：余煤　切入点：EDEM　出处：《华北水利水电大学》2017年硕士论文

【摘要】：随着社会的发展进步,环境污染问题越来越引起国家的重视。在传统的煤炭工业中煤炭通常是露天存放的,这会造成一定的环境污染问题,所以近年来工业用煤更多的是存放于封闭大体积圆柱平底筒仓内部。然而平底筒仓结构的特点决定着煤炭在倒仓时,一部分煤炭不能依靠自身的重力流出筒仓,故通过对平底筒仓煤炭清仓装置的研究,结合大型平底筒仓的特点提出适用于大型圆柱平底筒仓余煤的清仓装置——大型平底圆柱筒仓埋刮板式清仓装置。根据要实现的平底筒仓余煤出仓速率,设计了清仓装置物料输送系统的结构,确定埋刮板式清仓装置的组成:机架系统、物料输送系统、加强装置、动力驱动系统,利用SolidWorks三维建模软件建立三维模型。结合物料输送系统输送煤炭时的运动速度,以及在此速度下物料输送系统中刮板受到煤炭的阻力强弱,利用离散元分析软件EDEM,对清仓装置推动煤炭出仓过程进行仿真研究,验证了埋刮板式清仓装置物料输送系统结构的合理性。利用SolidWorks自带的有限元分析构件simulation,对埋刮板式清仓装置的机架、刮板与传输链等关键零部件,在外部作用力下的应力与应变情况进行了重点分析,得出了设计的清仓装置能够满足要求。采用Matlab/Simulink软件设计了埋刮板式清仓装置的模糊控制器,建立了仿真模型,并进行了仿真分析。
[Abstract]:With the development and progress of society, environmental pollution problem is increasingly attracted national attention. In the traditional coal industry in coal is usually stored in the open air, it will cause some environmental pollution problems, so in recent years, industrial coal more is stored in large volume closed cylindrical flat bottom silo. However the flat bottomed silo structure determines the coal in the warehouse, some coal can not rely on its own gravity outflow is through the study of silos, flat bottomed silo coal clearing device, combined with the characteristics of large flat bottomed silo is proposed for large cylindrical flat bottom silo residual coal clearance device -- large flat bottomed cylindrical silo buried scraper clearance device. According to achieve a the remaining coal storage silo design structure of the clearance rate, device conveying system, determine the composition of a buried scraper clearance device: rack system, material conveying system, Strengthening device, power driving system, the establishment of three-dimensional model using SolidWorks 3D modeling software. According to the material velocity of transportation of coal, and at this speed the material conveying system by scraper coal resistance strength, using discrete element analysis software EDEM, the clearance device to promote coal warehouse simulation research process, verify the rationality buried scraper clearance device conveying system structure. With the use of SolidWorks finite element analysis of component simulation, on a buried scraper clearance device, scraper and transmission chain of key parts are analyzed in the external force under stress and strain, the clearing device design can meet the requirements. The design of fuzzy controller buried scraper clearance device by using Matlab/Simulink software, the simulation model was established, and the simulation analysis.

【学位授予单位】：华北水利水电大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TD54

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