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1、AbstractAsphalt-cementmotor(CA)isanequipmentusedformixingandperfusion,whichplayacriticalroleinconstructinghighspeedrailway.TheCAmixerisakeyfunctiondeviceoftheCAmotor.TheperformanceevaluationsoftheCAmixerimpactdirectlyonthecriteriaoftheuniformity,theexpans
2、ionratio,theaircontent,thefluidityetc.oftheCA,bywhichareusuallyusedtoevaluatethestability,thereliabilityandthedurabilityoftherail.Regardingasitsbetterperformance,theverticalshaftplanettypemixeriswidelyusedinconstructing.Inthisresearchanewmodelofthevertica
3、lshaftplanettypemixerispresentedbasedonthecomparisonbetweenallexistingprototypesandthetechnologiesofverticalshaftplanettypemixer.Thisnewtypeisdrivedbythefrequencyconversionmotorwithcapabilityofmultitronicfrom0to200r/min.Drivingmechanismisconfiguratedwitht
4、hereducerandaccelerater.Comparingwiththetraditionalmixerthenewmodelpossessoftheadvantagesofmorecompactform,steadiertransmission,higherrotaryspeedandmoreuniformityresultingfromthemultilayerconstructionandhelicaldistribution.Thedesignofthemachineisaccomplis
5、hedbyPro/Esoftware.ThedynamicmodelsofthemixerareestablishedandsimulatedbyPro/Emechanism.Thereasonabilityofthedesignisverifiedbyanalysisofthedisplacementcurves,thespeedcurvesandpathofthemechanismofthemixer.Theanalyticalresultsshowthatthevalidationofthedesi
6、gnisverifiedandthemovingtrailofbladesiscomplicatedwithoutdeadband.Themixingparametersofthenewiscrosstestedbyusingtheprototypeoftheverticalshaftplanettypemixer.Theoptimalmixingisdeterminedbyanalyzingthetestresults.Themixingprocedureisdeterminedasfollow:fir
7、stlythemulseal,waterandwaterreducingagentisaddedandmixedslowly,secondlythepowerisaddedandmixedfast,finallytheantifoamingagentsisaddedandmixedslowly,thespeedandtimeconsumptionconcernedwithdifferentstepsisdeterminedasfollow:40r/min，130～140r/min，50～60r/minan
8、d1.0s，2.0～3.0s，2.0～2.5s.Theverticalshaftplanettypemixerisprovedtogetmoreadvantagesthanthedual-axialmixerbythecontrasttests.Keywords:verticalshaftplanettypemixer,CA,mixerparameter,experimentalstudy,parameterselection
