Production Technology Department, Zalainuoer Coal Mine Co. , Ltd.
Linglu Coal Mine, Zalainuoer Coal Mine Co. , Ltd.
Northern Iron Mine, Zalainuoer Coal Mine Co. , Ltd.
School of Mechanical Engineering, Liaoning Technical University

为了提高掘进机的截割效率,以掘进机截割部的运动参数为设计变量,研究悬臂式纵轴掘进机的截割头自转速度、摆动速度等运动参数对截割性能的影响,用MATLAB模拟各性能参数变化规律,以单个截齿载荷分析为基础,建立截割头各向载荷数学模型,根据现场经验给定运动参数设计空间,建立截割头的截割阻力、负载转矩、截割比能耗和截割生产率目标函数,采用线性加权法将多个优化目标转为单个目标,分别给出正常工况和夹矸工况的加权系数,求解截割运动参数最优配置,在EDEM仿真软件中对优化前后的截割性能进行验证,结果表明最优运动参数下的掘进机综合截割性能更优,截割能力、破岩能力提升,截割比能耗降低,生产率得到了显著提高,产尘量得到了一定程度的控制。

In order to improve the cutting efficiency of the roadheader, the motion parameters of the cutting part were taken as the design variables, and the influence of the motion parameters such as the rotation speed and swing speed of the cutting head of the cantilever longitudinal roadheader on the cutting performance was studied. MATLAB was used to simulate the variation law of each performance parameter. Based on the analysis of a single pick load, the mathematical model of the load in each direction of the cutting head was established. According to the design space of the motion parameters given by the field experience, the objective functions of the cutting resistance, load torque, cutting specific energy consumption and cutting productivity of the cutting head were established. The linear weighting method is used to transform multiple optimization objectives into a single objective. The weighting coefficients of normal working conditions and gangue working conditions were given respectively, and the optimal configuration of cutting motion parameters was solved. The cutting performance before and after optimization was verified in EDEM simulation software. The results show that the comprehensive cutting performance of roadheader under the optimal motion parameters is better, the cutting ability and rock breaking ability are improved, the cutting specific energy consumption is reduced, the productivity is significantly improved, and the dust production is controlled to a certain extent.

张洪清, 韩振国, 马传斌, 等. 不同工况下掘进机截割性能多目标优化 [J]. 煤炭工程, 2023, 55(9): 103-107.