撼神高频率液压缸应用在疲乏试验机疲乏试验机技术指标.docx
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撼神高频率液压缸应用在疲乏试验机疲乏试验机技术指标.docx
撼神高频率液压缸应用在疲乏试验机疲乏试验机技术指标Hydrauliccylindervibratestoa400Hzsine.(DYNA-MESSGmbh)andHnchenreachnewheightsofperformanceHydraulicsiscutting一edgetechnologyAccordingtoDr.MarcusJarchow,ManagingDirectorofDYNA一MESS,thesetestunitsareexposedtoextremestresseswithanominalforceof10kNandafrequencyofanythingfrom0to400Hz.Ithasbeenextremelydifficulttofindasuitablyhigh一performancehydrauliccylinderonthehydraulicsmarket,becausethetestdevicedependsontheperfectstick一slipbehaviourofthehydraulicsystem.CylinderswithhydrostaticallysupportedpistonrodguidesarenormalIyusedforthistypeofapplication,butthetechnicalexpenditureforthissolutionisenormous.uWehaveneverthelesskeptourearstothegroundtotryandfindoutwhocanoffersomehelpwithfindingasolution,rstatedtheManagingDirectorofDYNA一MESS."Everybodyhesitatedwhenwementionedthetechnicalrequirements,withtheexceptionofHnchenHydraulik.Afurtherargumentintheirfavourwasthattheyhadtheirowntestequipmentandwouldbeabletobasetheirresultsonextensiveexperience.Ultimately,thehydraulicspecialistsfromOstfildern,nearStuttgart,offeredastandardcylinderwithpatented,floatingannulargapsealwhichisconsiderablymorecost-effectivethandriveswithhydrostaticallysupportedpistonrodguides”.ThePZLassemblyseriesfromHnchen,however,alsoprovidesthesehigh-endcylinders.
