刨削过程中刮板输送机的货载分布研究

THE CARGO DISTRIBUTION IN THE PLANING PROCESS OF SCRAPER CONVEYOR

为了研究刨煤机刨削过程中刮板输送机货载分布状况,建立了刨煤机性能参数与刮板输送机运输性能参数之间的数学模型,利用数值仿真得出不同刨削速比、不同刮板输送机铺设长度、不同刨煤机刨头初始位置的条件下刮板输送机的装载量曲线,并对其波动特性进行了分析。结果表明:刮板输送机的最大装载量与输送机铺设长度、刨削速比、刨煤机工作面高度、刨煤机刨煤厚度、煤的实体密度等因素有关,与刨煤机的初始位置无关;刮板输送机达到最大装载量之后,刨削速比为奇数时,装载量保持最大值并恒定不变,刨削速比为其它值时,装载量呈周期性波动变化。

In order to study the scraper conveyor load distribution in the process of cutting,a mathematical model between plow performance parameters and scraper conveyor transport performance parameters was established. Using numerical simulation obtained scraper conveyor loading capacity curve in condition of different planing speed ratio,different scraper conveyor lay length and different plow initial position,and analyzing its fluctuation characteristics. The results showed that： the maximum loading capacity of scraper conveyor is related to conveyor lay length,cutting speed ratio,plow face height,plow planing thickness,entity density of coal and so on,is independent of plow initial position; after reaching the maximum loading capacity of scraper conveyor,when planing ratio is odd,the loading capacity maintain maximum and constant,planing speed ratio to another value,the loading capacity presents fluctuation periodically.