采煤机螺旋滚筒失效原因分析及改进.docx

采煤机螺旋滚筒失效原因分析及改进
Title:AnalysisofFailureCausesandImprovementsofShearer'sSpiralDrum
Introduction:
Theshearer'sspiraldrumisacriticalcomponentincoalminingmachinerythatisresponsibleforcuttingcoalseams.Theefficiencyandreliabilityoftheshearerheavilyrelyontheperformanceofthespiraldrum.However,failuresandmalfunctionsofthespiraldrumcanleadtoreducedproductivity,increaseddowntime,andadditionalmaintenancecosts.Therefore,thispaperaimstoanalyzethecausesofspiraldrumfailuresandproposepotentialimprovementstoenhanceitsperformance.
1.CausesofSpiralDrumFailures:
1.1.FatigueFailure:Continuouscyclicloadingduringthecuttingprocesscancausefatiguedamagetothedrum,resultingincracksandfractures.
1.2.WearandAbrasion:Thecuttingprocessexposesthespiraldrumtoconstantcontactwithcoalandrocks,leadingtowear,abrasion,andultimatelythelossofcuttingeffectiveness.
1.3.BearingFailure:Thespiraldrum'sbearingscanfailduetoinadequatelubrication,excessiveloads,orcontaminationbydustanddebris,leadingtoincreasedfriction,heat,andpotentialseizing.
1.4.Misalignment:Misalignmentofthespiraldrumcanoccurduetopoorinstallationorimpropermaintenance,leadingtounevenloadingandincreasedstressonspecificsectionsofthedrum,therebyacceleratingfatigue.
1.5.MaterialDefects:Defectsinthemanufacturingprocessortheusageofsubstandardmaterialscanresultinlowerstrengthanddurability,contributingtoprematurefailureofthespiraldrum.
2.ImprovementsforSpiralDrumPerformance:
2.1.EnhancedMaterials:Theuseofhigh-strength,wear-resistantmaterials,suchasspecialalloysorcompositematerials,canimprovethedurabilityandperformanceofthespiraldrum.
2.2.DesignOptimization:Thedesignofthespiraldrumshouldbeoptimizedtoreducestressconcentrations,improveloaddistribution,andenhancefatigueresistance.
2.3.SurfaceCoatings:Applyingprotectivecoatings,suchasceramicorcarbidecoatings,tothecuttingsurfacesofthedrumcansignificantlyreducewearandabrasion,prolongingthedrum'slifespan.
2.4.LubricationandSealingSystems:Implementingeffectivelubricationandsealingsystemscanpreventbearingfailures,e