建立了基于瞬态动力学分析软件MSC.Dytran的刮板输送机链轮传动系统等效动力学模型,分析了卡链过程中链轮与圆环链之间的接触动力学特性,得出链轮最大应变的变化规律:伴随着链轮与圆环链"冲击—反弹",最大应变在0.06 s内经历4次"小—大—小"周期性变化,且随着循环次数的增加,应变峰值逐渐降低,最后随着电机输出力矩的增加最大应变同步增加;选定链轮上5个特殊位置的节点,分析得出卡链过程中其应变、法向接触力、切向力、摩擦力的变化规律。

The equivalent dynamics model of the sprocket driving system in the scraper conveyor established based on MSC.Dytran was applied to analyze the con tact dynamics features between sprocket and chain during the chain jammed process and the max strain variation law of the sprocket was obtained.With the "impact-re bound" between the sprocket and chains, the max strain would have four small-large- -small periodical variations within 0.06 s.With the circulated number increased, t he peak of the strain would be steadily reduced.Finally with the output torque of the electric motor increased, the maximum strain would be synchronously increased.Wit h five special location nodes selected on the chain sprocket, the variation laws of the strain, normal contact force, tangential contact force and frictional force in the chai n jammed process were analyzed and obtained.

“十一五”国家科技支撑计划重点资助项目(2007BAB13B01-02)；山西省科技重大专项资助项目(20111101040)；