基于滚筒实验载荷的采煤机滑靴动力学特性分析

发布时间：2018-09-15 06:25

【摘要】：针对采煤机平滑靴、导向滑靴、刮板输送机销排之间寿命不匹配、可靠性低的问题,采用虚拟样机技术建立了包含刮板输送机中部槽线路形态特征、摇臂柔性变形特征、平滑靴与中部槽接触摩擦特征、导向滑靴与销排含间隙接触碰撞特征、驱动轮与销排的接触啮合特征的采煤机刚柔耦合动力学模型,再以滚筒实验载荷为激励对模型进行仿真研究,结果表明:在实验载荷激励下,致使左平滑靴在y向的载荷大于右平滑靴,两者载荷仿真均值约为198.2,78.2 k N,在z向载荷相接近,仿真均值约为-20.0,-16.5 k N;左、右导向滑靴在y向的载荷仿真均值约为42.0,45.2 k N,在z向载荷均值约为289.9,270.1 k N;通过实验验证了仿真结果,并利用仿真模型分析了不同俯仰角、侧倾角情况下滑靴受力变化规律,为研究不同工况下采煤机整机力学特性提供依据。
[Abstract]:Aiming at the problems of poor reliability and mismatch between pin and row of shearer smooth boots, guide slippers and scraper conveyors, virtual prototyping technology is used to establish the characteristics of line shape in the middle slot of scraper conveyor and flexible deformation characteristics of rocker arm. The dynamic model of rigid and flexible coupling of shearer with smooth shoe and middle groove contact friction characteristic, guide slide shoe and pin row with clearance contact collision characteristic, driving wheel and pin row contact meshing characteristic, The simulation results show that the load of the left smooth boot in y direction is larger than that of the right smooth boot under the excitation of the experimental load. The simulation mean value of the two loads is about 198.2n and 78.2kN, which is similar to the load in the z direction, and the simulation results show that the load of the left smooth boot is larger in the y direction than that in the right one. The average value of simulation is about -20.0 ~ 16.5 KN, the average value of load simulation of left and right guide skates is about 42.0 ~ 45.2 KN in y direction and 289.9270.1 KN in z direction, the simulation results are verified by experiments, and different pitch angles are analyzed by simulation model. The mechanical characteristics of shearer under different working conditions can be studied according to the changing law of sliding boots under the condition of side inclination.
【作者单位】：辽宁工程技术大学机械工程学院;煤炭工业协会高端综采成套装备动力学测试与大数据分析中心;中国煤矿装备有限责任公司;
【基金】：国家自然科学基金资助项目(51774162,51404132)
【分类号】：TD421.6

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