【作者】 程玉军；

【导师】 田取珍；

【作者基本信息】 太原理工大学 ， 采矿工程， 2005， 硕士

【摘要】 本文介绍了冲击式破煤机理的提出和冲击式采煤机的研究现状,然后指出了本课题的主要任务是研究液压冲击系统的动态特性。在对冲击式采煤机液压冲击系统工作过程进行详细分析的基础上,运用微分方程建模方法,建立了液压冲击系统的数学模型即系统的动态方程,并在该数学模型的基础上,采用Matlab中的Simulink动态仿真功能,建立了基于Simulink的冲击系统仿真模型,通过给定冲击式采煤机冲击系统的相关参数,对该系统进行仿真,得到了冲击式采煤机工作过程中冲击速度和油液压力以及刀架位移的变化曲线,进而对冲击系统的动态特性进行了分析,结果与实际情况较为吻合,并由此得出某些合理的参数。仿真结果对处于设计中的液压冲击系统提供了一定的理论依据,对于冲击式采煤机的进一步完善具有重要的指导意义。更多还原

【Abstract】 The coal impact breaking mechanism and impact coal cutter were introduced in the paper, the primary task of this project, study on the dynamic characteristic of hydraulic impact system of impact coal cutter, was pointed out. Based on the detailed analyzing of impact system working process, the differential eguation of the system was got, and the mathematical model of the hydraulic impact system was builted, on basis of the mathematical model, By using of dynamic simulation function of Matlab ,the author has built the simulation model of the impact system based on software Simulink and run it after inputting the parameter ,the dynamic graph curve of impact velocity and presser of oil and position of knife rest were got, and the dynamic characteristic of impact system was analyzed,the simulated results are accorded with the fact,and some rational parameters can be found. The finding will provide necessary theory dependence for the hydraulic impact system, which is in the designing and issignificant for impact coal cutter, which is in the perfecting.更多还原