第44卷第3期2023年6月杨贵城，胡璟.采煤机长螺杆振动特性试验研究［J].煤矿机电，2023，44（3）：57-60.doi:10.16545/j.cnki.cmet.2023.03.012煤矿机电CollieryMechanical&ElectricalTechnology采煤机长螺杆振动特性试验研究Vol.44No.3Jun.2023杨贵城1-2，胡璟1.2（1.中国煤炭科工集团上海有限公司，上海200030；2.天地上海采掘装备科技有限公司，上海201499）扫码移动阅读摘要：针对采煤机长螺杆的振动疲劳断裂问题，对长螺杆进行了试验研究。首先，设计模拟采煤机三段机身的试验夹具，将夹具和振动传感器安装到预定位置；然后，将机身振动载荷导入试验台模拟机身振动，开展长螺杆振动特性试验，得出其横向振动特性；最后，分析试验结果，提出长螺杆组件的改进方案，重复试验以验证改进效果。研究表明：长螺杆横向振动的最大变形处为各阶模态振型的波腹处，改进后长螺杆的最大变形量减小为原来的10%，改进方案有利于提高长螺杆的疲劳寿命，减少长螺杆疲劳断裂问题的发生。关键词：长螺杆；振动特性；试验测试；改进方案中图分类号：TD421.6ExperimentalStudyontheVibrationCharacteristicsofLongScrewsinCoalMiningMachinesYANCCuicheng",HUJing"-(1.CCTEGShanghaiCo.,Ltd.,Shanghai200030,China;2.TiandiShanghaiMiningEquipmentTechnologyCo.,Ltd.,Shanghai201499,China)Abstract:Anexperimentalstudywasconductedonthevibrationfatiguefractureofthelongscrewofacoalminingmachine.Firstly,anexperimentalfixturewasdesignedthatsimulatesthethreesectionbodyofacoalminingmachine,andinstallthefixtureandvibrationsensorinthepredeterminedposition.Then,thevibrationloadofthefuselagewasintroducedintotheexperimentalplatformtosimulatethevibrationofthefuselage,andthevibrationcharacteristicsofthelongscrewweretestedtoobtainitslateralvibrationcharacteristics.Finally,theexperimentalresultswereanalyzedandproposedanimprovementplanforthelongscrewcomponent,andrepeatedtheexperimenttoverifytheimprovementeffect.Researchshowedthatthemaximumdeformationofthetransversevibrationofalongscrewwasattheantinodesofeachmodeshape.Afterimprovement,themaximumdeformationofthelongscrewwasreducedto10%oftheoriginalvalue.Theimprovementplanisbeneficialforimprovingthefatiguelifeofthelongscrewandreducingtheoccurrenceo...
