液压凿岩机冲击能测量不确定度分析  

Analysis of Measurement Uncertainty of Impact Energy of Hydraulic Rock Drill

作　　者：郭赛葛 GUO Sai-ge(CCTEG China Coal Research Institute,Beijing 100013;Test Center of China Research Institute,Beijing 100013)

机构地区：[1]煤炭科学技术研究院有限公司,北京100013 [2]煤科(北京)检测技术有限公司,北京100013

出　　处：《凿岩机械气动工具》2024年第2期40-43,共4页Rock Drilling Machinery & Pneumatic Tools

摘　　要：为提升液压凿岩机冲击能检验参数的准确度,综合光电位移检测系统构成及试验原理,从反复测量、液压压力波动、仪表自身误差、试验过程误差、试验人员等方面全面分析了影响液压凿岩机冲击能检测的原因,并以YYG-21/900型产品为检测样品,依据JJF 1059.1-2012《测量不确定度评定与表示》技术规范,确定测量冲击能的数学模型,甄别检测过程中不确定度的来源,进行分量标准不确定度、合成不确定度以及扩展标准不确定度评定,为正确评定冲击能测试结果提供准确的方法。To improve the accuracy of testing parameters for impact energy of a hydraulic rock drill,the article thoroughly analyzes the factors affecting the impact energy testing for a hydraulic rock dril in terms of repeated measurements,fluctuation of hydraulic pressures,errors of instruments,errors in testing and testing operators,taking into account the makeup and testing principles of the photoelectric displacement testing system.Using YYG-21/900 hydraulic rock drill as the testing sample,it determines the digital model for impact energy test,identifies the source of uncertainty during the testing and assess fractional standard uncertainty,combined uncertainty and expanded standard uncertainty,providing a proper way of correctly assessing the results of impact energy testing.

关 键 词：液压凿岩机 冲击能 不确定度 合成不确定度 

分 类 号：TD421.22[矿业工程—矿山机电]