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为了得到符合实际工况的中部槽与负载的动力学模型,研究了刮板输送机在满载工况下溜槽底部的受力情况,在考虑负载散体特性的基础上,分析了负载所受阻力偏大的原因;提出了利用EDEM软件测量刮板与散粒体之间的阻尼系数与刚度系数的方法;搭建了中部槽与负载的动力学模型,并与常用动力学模型进行了比较。结果表明:煤散料的流动性导致输送过程中溜槽底部所受负载压力大于负载自重;EDEM软件可以测量刮板与煤散料之间的阻尼系数和刚度系数;增加刮板与煤散料之间的阻尼系数和刚度系数的动力学模型符合实际工况,为进一步搭建刮板输送机整体动力学模型提供理论基础。
In order to get the kinetic model of the middle tank and load which is in line with the actual working conditions, the stress of the scraper conveyor under the full load condition was studied. Based on the characteristics of load dispersion, the load resistance The reason why the damping coefficient and the stiffness coefficient between the scraper and the bulk material is measured by EDEM software is proposed. The dynamic model of the middle tank and the load is established and compared with the common dynamic model. The results show that the flowability of coal bulk material causes the load pressure at the bottom of the chute to be greater than the load self-weight during transportation. EDEM software can measure the damping coefficient and stiffness coefficient between scraper and coal bulk material. The dynamic model of damping coefficient and stiffness coefficient accord with the actual working conditions, which provide the theoretical basis for further building the overall dynamics model of scraper conveyor.