煤礦液壓支架用閥試驗(yàn)臺及其關(guān)鍵元件的研制.pdf

1、華中科技大學(xué)碩士學(xué)位論文煤礦液壓支架用閥試驗(yàn)臺及其關(guān)鍵元件的研制姓名：謝宏曉申請學(xué)位級別：碩士專業(yè)：機(jī)械電子工程指導(dǎo)教師：朱玉泉賀小峰20060427IIAbstractThereliabilityofcoalminingshieldsupptisveryimptantfthesafetyinthecoalproduction.Thevalvesfshieldsupptarethececontrolcomponentsofshields

2、upptsostricterrequirementisneededftheirperfmance.Thetypesofvalvesmainlyincludereliefvalvepilotcontrolledcheckvalvereversingvalveshutoffvalve.AkindofCAThydraulictestrighasbeendevelopedinthisdissertation.Itisusedftheexperi

3、menttestofvalvesfcoalminingshieldsupptfZhengzhouCoalMiningMachineryGroup.Theacteristicofthistestrigishighpressure(methan50MPa)massflow(methan500litersperminute)adequateftheemulsionmediumcomputeraidedtestingsystemisused.T

4、hisarticlemainlydoessomeresearchonthehydraulicsystemofthetestrigitskeywaterhydrauliccomponents.Themainresearchwkisasfollows:AccdingtothetechnologyrequirementsbroughtfwardbyZhengzhouCoalMiningMachineryGroupthestarddrafted

5、bythefeCoalDepartmentthisdissertationmakesthegeneralplanofthetestrigthendesignedtheschematicdiagramofhydraulicsystem.Modularizationideaisadoptedindesigningthissystemthewholetestrigisdividedintosixmodules.What’smethepossi

6、blehydraulicstrikepressurelossinthissystemarealsoanalyzedcalculatedthecrespondingmeasuresaretaken.Thearticledoessomeresearchonthewaterreliefvalvebystaticcalculationdynamicsimulationthenaccomplishesthestructuredesignbased

7、onit.Thewaterflowrestrictivevalvesaredesignedasthebackpressurevalveflowadjustingvalve.Fthedemofhigherpressure(ashighas75MPa)thebidirectionalpressuregingsystemisdesigned.Theautomaticswitchingdeviceisdesignedtosatisfythere

8、questofageexperimentfreversingvalve.Sinceageexperimentshouldbetakenfmethan6000timesthisdevicecangreatlyenhancetheefficiency.Finallytheoperationplatfmsfmodeltestrigintensitytestrigaredesigned.Atpresentthedevelopingdirecti

9、onofvalvesfshieldsupptishighpressuremassflow.Withthetestrigbeingsuccessfullydevelopeditcanprovideaneffectivetestingfacilityfthevalvesfshieldsupptcangreatlyhastentheirqualityelevation.Keywds：valvesfshieldsuppthighpressure