煤散料在刮板输送机中部槽中的运动分布特征与作用力特性
Motion characteristics and force properties of bulk coal in middle pan of scraper conveyor
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摘要: 基于刮板输送机的工作原理和煤散料的几何与物理特性,建立了刮板输送机运输煤散料的离散元模型。运用离散元软件EDEM对运输过程进行了仿真,分析了煤散料在中部槽内的分布状态和运动特性,以及煤散料对中部槽和刮板链的作用力特性,结论认为煤散料的分布状态和运动特性在恶劣情况下会导致在中部槽的链道处产生磨粒磨损,研究结果可以为刮板输送机的结构优化提供参考。Abstract: Based on the working principle of scraper conveyor and the geometric and physical properties of bulk coal, a discrete element model of scraper conveyor transporting bulk coal was established. And the transportation process was simulated by utilizing the discrete element software EDEM. This paper analyzes the results which are difficult to obtain by the traditional continuum theory,including the distribution and motion characteristics of bulk coal in the middle pan and the properties of force to the middle pan and the scraper chain. It is found that the distribution and motion characteristics of bulk coal can lead to abrasive wear in the chain way of middle pan under severe circumstances. The conclusions provide a reference for the optimum structural design of scraper conveyor.