【作者】 薛光辉； 赵国瑞； 朱世刚； 张东进； 吴淼；

【Author】 Xue Guanghui~1,Zhao Guorui~1,Zhu Shigang~(1,2),Zhang Dongjin~(1,3),Wu Miao~1 (1.School of Mechanical Electronic & Information Engineering,China University of Mining and Technology(Beijing),Beijing, 100083,China;2.Datong China coal export coal base construction co.,Ltd.,Datong,037003,China;3.Shanxi Fenxi Shuguang coal industry co.,Ltd.,Lingshi,31302,China)

【机构】 中国矿业大学(北京)机电与信息工程学院； 朔州中煤平朔能源有限公司； 山西汾西曙光煤业有限责任公司；

【摘要】 振动筛下横梁断裂将导致整个选煤生产线停工停产,经济损失巨大.本文研究了振动筛下横梁传递函数与其裂纹的产生和扩展之间的演变规律,提出了基于金属磁记忆检测技术的振动筛下横梁早期裂纹故障快速检测方法.实验研究和工业应用表明该检测方法有效可行,可实现振动筛下横梁早期裂纹故障的快速检测.减少甚至避免其突然断裂事故的发生.为洗煤厂带来巨大经济效益.更多还原

【Abstract】 The abrupt fracture of vibrating screen lower beam would make the whole coal preparation product line shutting down and result in large economic losses.In this paper,a quick crack flaw detection method was proposed based on the technical method of metal magnetic memory testing(MMMT).The experimentation and spot application results showed that the method was efficient, and could achieved the early crack fault quick detection of vibrating screen lower beam.Its application could decrease and even avoid the lower beam abrupt fracture occurrence of the vibrating screen.更多还原