惯性往复振动机械自由振动阻尼的试验研究  

EXPERIMENTAL RESEARCH ON DAMPING VALUE OF FREE VIBRATION OF INERTIAL RECIPROCATING MACHINES

作　　者：胡继云[1] 荆海伟[1] 李辉[1] 

机构地区：[1]河南工业大学机电工程学院,河南郑州450007

出　　处：《河南工业大学学报（自然科学版）》2011年第3期77-79,共3页Journal of Henan University of Technology：Natural Science Edition

摘　　要：以TQLZ惯性往复振动筛为研究对象,采用自由振动法分别测得金属螺旋弹簧和橡胶弹簧支承时的阻尼率.结果表明,自由振动时机械的阻尼主要是支承弹簧材料的内摩擦阻尼,所以橡胶弹簧支承时的阻尼远大于金属螺旋弹簧支承时的阻尼,且橡胶弹簧支承时的阻尼值接近有关文献推荐的阻尼值,而金属螺旋弹簧支承时的阻尼值过小,会使机械在启动或停车过程中产生较大的共振振幅.Taking TQLZ inertial reciprocating vibrating screen as the research object,we measured the damping rates of metal helical spring and the rubber spring as support elements using free vibration method.The results showed that machines mainly had the inner frictional damping from the support spring material during free vibration,so that the damping value of the rubber spring as the support element was largely higher that of the metal helical spring and approached to that of related literatures;the metal helical spring had a small damping value,which caused large resonance amplitude of the machines during start or stop.

关 键 词：惯性往复振动机械 自由振动 金属螺旋弹簧 橡胶弹簧 阻尼 

分 类 号：TS212.3[轻工技术与工程—粮食、油脂及植物蛋白工程]