ZYJ7型電動液壓轉轍機ZYJ7Electro-HydraulicSwitchMachine天津鐵道職業技術學院鐵路信號基礎設備維護高速鐵路道岔轉轍設備結構組成及作用ZY(J)系列電動液壓轉轍機(以下簡稱電液轉轍機)是采用電動機驅動、液壓傳動方式來轉換道岔的一種轉轍裝置。ZY(J)系列電動液壓轉轍機及其配套的安裝裝置與外鎖閉裝置，能轉換、鎖閉各種規格、型號的內、外鎖閉道岔，并能正確反映尖軌及可動心軌轍叉的位置和狀態。其中ZYJ7型電動液壓轉轍機廣泛使用在提速道岔上。（一）電動液壓轉轍機型號及含義電動液壓轉轍機型號及含義如圖所示

ZY(J)serialelectro-hydraulicswitchmachines(hereinafterreferredtoaselectro-hydraulicswitchmachine)areswitchdevicesthataredrivenbyelectricmotorandemployhydraulictransmissiontoworktheturnouts.TheZY(J)series,itssupportinginstallationdevicesandexternallockingdevicecanconvertandlocktheinternalandexternallockingswitchesofvariousspecificationsandmodels,andcancorrectlyreflectthelocationandstatusofthetonguerailrailsandthemovablefrogs.Amongthem,theZYJ7electro-hydraulicswitchmachineiswidelyusedinspeed-increasingturnouts.1.ModelsandImplicationsofElectro-HydraulicSwitchMachinesStructureandFunctionofHigh-SpeedRailwaySwitch高速鐵路道岔轉轍設備結構組成及作用（二）ZYJ7型電液轉轍機結構ZYJ7型電動液壓轉轍機由ZYJ7型電液轉轍機（亦稱主機，用于第一牽引點或單點牽引）和SH6型轉換鎖閉器（亦稱付機，用于第二、第三等牽引點）組成，主機與付機共用一套動力系統，兩者之間靠油管連接傳輸動力。ZYJ7型電液轉轍機、SH6型轉換鎖閉器結構圖分別如圖所示2.TheStructureoftheZYJ7Electro-HydraulicSwitchMachinesTheZYJ7electro-hydraulicswitchmachineconsistsoftheZYJ7electro-hydraulicswitchmachine(alsoknownasthemainmachine,usedforthefirsttractiontonguerailorsingletractionpoint)andtheSH6conversionlockmachine(alsoknownastheauxiliarymachine,usedforthesecondandthethirdtractionpoints,etc.).Themainengineandtheauxiliaryshareasetofpowersystem,andthepowergeneratedistransmittedbetweenthetwobyoilpipes.StructureandFunctionofHigh-SpeedRailwaySwitch高速鐵路道岔轉轍設備結構組成及作用（二）ZYJ7型電液轉轍機結構ZYJ7型電動液壓轉轍機結構主要分：動力機構、轉換和鎖閉機構、鎖閉表示機構等組成。1.動力機構2.轉換鎖閉機構轉換鎖閉機構的作用是轉換并鎖閉動作桿在定位或反位位置。動作桿鎖閉后能承受100KN的軸向鎖閉力，它主要由油缸、動作桿組、鎖閉鐵等零件組成。3.表示鎖閉機構表示鎖閉機構能正確反應尖軌位置，鎖閉桿鎖閉后，能承受30KN以上的軸向力。主要包括接點組、鎖（表示桿）閉桿等零部件。動力機構即電機、油泵組，作用是將電能變為液壓能，主要由油箱蓋組、左、右溢流板組、連軸器、油泵支架、電機、慣性輪組、安裝底板、油箱磁鋼組、油泵、油泵回油管（潤滑油）組、溢流回油管組等組成。油泵油缸及推板StructureandFunctionofHigh-SpeedRailwaySwitch1.PowermechanismThepowermechanismisthemotorandtheoilpumpunitconvertingelectricalenergyintohydraulicenergy.Itismainlycomposedofthefueltankcovergroup,leftandrightoverflowplategroup,axlecoupler,oilpumpbracket,motor,inertialwheelgroup,installationbaseplate,oiltankmagnetgroup,oilpump,oilpumpreturnpipe(lubricatingoil)group,andoverflowreturnpipegroup,etc.2.TheconversionlocksystemTheconversionlocksystemismainlycomposedofoilcylinder,actuatinglevergroup,lockingironandotherparts,andusedtoswitchtheactuatinglevertothenormalorreversedpositionandlockit.Aftertheactuatingleverislocked,itcanwithstandanaxiallockingforceof100KN.Thehydraulicoildrivesthecylindertomoveleftorright,andsogoestheactuatinglever.Theupperpushplateoftheoilcylinderlockstheactuatingleverinthenormalorreversedposition.3.IndicationlockingsystemComposedbypartslikethecontactgroups,lock(indicationpole)andclosingrod,andetc.,theindicationlockingmechanismcancorrectlyreflect