采煤机斜切进刀工况下截割阻力特性研究

发布时间：2019-03-13 14:27

【摘要】：针对现有比例算法与功率算法等在计算采煤机斜切进刀工况下截割阻力的不足,从截齿截入煤壁深度入手,分析了截齿参与截割的判断条件,推导了截齿切削厚度、截割阻力的理论计算方法,并利用MATLAB进行了模拟;设计了截割阻力的试验测试方案,进行了试验研究;对比分析了理论模拟与试验结果,两者在周期性、变化趋势、数值特性等方面基本一致,验证了理论分析的正确性和试验的可行性;依据对边界位置关键截齿的分析,确定了斜切进刀工况下采煤机危险截割位置为S=1.25×10~4~1.31×10~4mm。能为分析斜切进刀工况下采煤机滚筒载荷的变化情况,改善采煤机实际操作、预测事故发生等提供理论和试验依据。
[Abstract]:In view of the deficiency of existing proportional algorithm and power algorithm in calculating cutting resistance under the condition of slant cutting tool of shearer, this paper starts with the depth of cutting into coal wall, analyzes the judging conditions of cutter participating in cutting, and deduces the cutting thickness of cutter. The cutting resistance is calculated theoretically and simulated by MATLAB. The test scheme of cutting resistance is designed, and the experimental research is carried out. The theoretical simulation and test results are compared and analyzed. The results are basically consistent in periodicity, variation trend and numerical characteristics, which verify the correctness of the theoretical analysis and the feasibility of the test. According to the analysis of the key cutter at the boundary position, the dangerous cutting position of the shearer is determined to be 1.25 脳 10 ~ 4 ~ 1.31 脳 10 ~ 4 mm under the condition of oblique cutting tool. It can provide theoretical and experimental basis for analyzing the variation of roller load of shearer under the condition of oblique cutting tool, improving the actual operation of shearer, predicting the accident and so on.
【作者单位】：宿州学院机械与电子工程学院;辽宁工程技术大学机械工程学院;
【基金】：国家自然科学基金资助项目(51304107) 辽宁省教育厅创新团队资助项目(LT2013009) 辽宁省煤矿液压技术与装备工程研究中心开放基金资助项目(CMHT-201206) 安徽省高等学校省级教学研究资助项目(2016jyxm1032)
【分类号】：TD421.6

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