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中文摘要：
大型破碎站是现代采矿业发展的标志性装备,目前该设备的研制对国外制造商依赖性较强,为打破国外垄断、实现国产化,有必要对其设计制造中的关键技术进行研究.重型板式给料机作为破碎站的关键部件,运行过程中承受剧烈振动与复杂冲击载荷,其中驱动链轮是给料机的主要传动部件,其结构性能是稳定、高效输送物料的关键.根据某型号重型板式给料机实际工作过程中驱动链轮的受载特点,建立了驱动链轮的三维参数化驱动模型.在此基础上,以驱动链轮的分度圆直径、滚子外径、齿宽为设计变量,将质量和应力作为优化目标,采用多目标遗传算法对链轮进行结构优化设计.优化结果表明：相较于原始方案,优化方案在实现轻量化目标的同时应力分布情况较好,优化后链轮质量减小19.1％,最大应力减小7.2％,重型板式给料机整机综合性能提升明显.
英文摘要：
Large crushing plant is a kind of iconic equipment of modem mining industry. For developing this equipment, domestic manufacturers at present mainly rely on the technology of foreign companies, so researches on the key techniques of its design and manufacture is essential to break the foreign monopoly and realize domesticatiorL Since heavy duty apron feeder is one of core components, its performance is critical of conveying materials stably and efficiently. According to the characteristics of loads during apron feeder working, it established the 3D parameter-driven model of driving sprocket. On this basis, taking the pitch circle diameter, roller diameter, tooth width of driving sprocket as design variables, it regarded the mass and stress as optimization goals and solved this optimization problem with MOGA. The optimization results indicate that the stress distribution in optimization scheme is better; the mass and maximum stress is decreased by 19.1% and 7.2% respectively, which improves the performance of heavy dut atron feeder obviously.
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