company news_News Center_Qingdao Yidong Mining Machinery Manufacturing Co., Ltd.

Strict control of each production process to create a perfect link

Thelinkchainiswidelyusedinminingandtransportationequipment,whichisthecoreofthenormaloperationofthewholeequipment.Therefore,theprocessingqualityofthelinkringwilldirectlyaffecttheproductioneffect,sothequalityrequirementswillbecomemoreandmorestrict!Thelinkringistheconnectingpartonthescraperchainofthecoalminescraperconveyor.Itplaysanimportantroleinthetractionlink,soitisnecessarytocontrolthevariousprocedurestocreateaperfectlink.Thelinkringconsistsoftwoidenticalshrimp-shapedhalfringsandonestablepin.Theshrimp-shapedhalfringisprovidedwithtwotypesofconvexandconcavetoothsystems,andthetoothshapeineachtoothsystemisprovidedwithconvexandconcavearcs,andeachtoothdirectionalsohasacirculararc.Thetwoshrimp-shapedhalfringsaretensionedbytheconvexandconcaveteethandarefixedtogetherbythestabilizingpins.Duetoitsuniquestructure,itisdeterminedtohavesuperiortensile,torsional,flexuralandfatigueresistance.Thetwoconcaveandconvexteethontheshrimp-shapedhalfringareprovidedwitharcsinbothdirections,andeachtoothsystemhashighprecision,soitisdifficulttoprocess.Atthesametime,duetoitshighstrengthrequirements,therequirementsforheattreatmentarealsohigh.Thelinkringhasahighbreakingcapacityandrequireshighreliabilityinoperation.Therefore,itisalsoanurgenttechnicalrequirementtostudythestressofthelinkandimprovethelifeofthelink.Wecanalsousethetheoryofelasticcontactanddeformationcoordinationtostudythecontactforceanddeformationofthepinandthelink.Theminingarc,ladderteeth,andflatchainlinkareanalyzedundertheconditionofmaximumtensileforce,andtheforcereceivedbythelinkringiscalculated,andtheforceofthelinkringisanalyzed.Thedesignofthedockinglinkstructureisoptimizedbyspecifyingdesignparameters.

2019-01-03

What problems should I pay attention to when connecting the chain?

Weallknowthatthesafetystandardoftheconnectingringinthecoalmineisstillveryhigh.Itisrequiredthatthebreakingloadoftheconnectingringshouldnotbelessthanthebreakingloadofthechain.Thishashighrequirementsforthematerialsandtechnologyweuseinproduction.Whentheringisusedinthemine,itisnecessarytousethecoalsafetycertificate,thatis,thecoalminesafetypermit.Fromthispoint,itcanbeseenhowhighthetechnicalrequirementsfortheconnectingringare.Theserratedchainringhasauniquetoothdesign,precisetoothshapeandeasyassemblyanddisassembly.Generalsawtoothringmaterial:23manganese,20manganeseopen,20manganesevanadium,23镙molybdenumtitanium,23manganesenickelbismuthmolybdenumalloy,54steelandothertemperedserratedrings,arctoothringspecifications:18×64,22×86,24×86,26×92,30×108,34×126Serratedchainringfunction:Theserratedconnectingringissuitableforthelinkconnectingthehigh-strengthcircularchainofmine,andtheserratedchainringisItcanbeinstalledhorizontallyandvertically.

2019-01-03

Application of chain link on scraper

Hereisabriefintroductiontotheapplicationofthelinkringonthescraper:Thesawtoothringroothasasmallroundedcorner.Itiseasytocausestressconcentrationwhenloaded.Thenumberofteethofthesawtoothringislarge,thecontactareaislarge,andtheforceofasingletoothissmall.Ifthetoothshapeisnotprocessedproperly,thepitcherrorandtootherrorareeasytooccur.Whentheloadisoverloaded,theindividualteethareoverloadedtoproducefatiguecracks.Usually,thenumberoffatiguesofthesawtoothringislessthan20,000times.Thewirecuttingprocesscanimprovethetoothmeshingandstressconcentration,andthefatiguelifeisimproved,butitstillcannotreach40000timesofthecoalindustrystandard.Thenumberofnewchainlinksisrelativelylarge,therelativeloadofeachtoothissmall,therootofthetoothedringofthestepringislarge,andthestressconcentrationoftherootissmall.Thisdesigngreatlyincreasestheservicelifeofthelink.Thecorrectuseofthescraperisalsoveryimportant.Thehigh-qualitychainlinkcanhelpittocarryoutvarioustaskseffectively.Intheminingindustry,sawtoothringsarealsousedinmanyplaces.Goodsawtoothringsarefavoredbyeveryone.Thechoiceofobjects.

2019-01-03

Customize various sprocket assemblies

Thesprocketassemblyisalsocalledasprocketshaftsetandasprocketassembly.Mostconsistofasprocketbody,abearinghousing,andasprocketshaft.Itisanimportantpartofthescrapertransporterandthereloadingtransporter.Customizedvarioussprocketcomponentsmanufacturers,QingdaoYidongCoalMineMachineryisacomprehensiveentitythatintegratesmachinerymanufacturingandserviceindustries.Itmainlyproducesvariouschainlinks,sprocketshaftsetsandsprocketassemblies.Highqualityandlowprice,welcometocometocustom-madechainringminingringchainsprocketassemblycasting,chainverticalring,flatchainlink,openconnectionring,sawtoothlinkring,mininglinkring,linkring,miningchain,miningringchain,galvanizedringchain,mininghigh-strengthsprocketassembly,sprocketshaftset,high-strengthsprocketshaftset,high-strengthsprocketassembly,sprocketassembly,etc.

2019-01-03

What are the performance characteristics of the scraper conveyor chain?

Basedontheanalysisofthecharacteristicsofthesawtoothringandthestepringring,anewtypeoflinkringisdesigned.Thefiniteelementsoftwareisusedtoanalyzetheforceofthenewlinkringtooth.Theexperimentalresultsshowthatthebreakingloadandfatiguelifeofthenewconnectingchainaresignificantlyimprovedcomparedwiththesawtoothringandthestepring.Theperformancecharacteristicsofthescraperconveyorchainlinkareasfollows:(1)Advancedstructuralanddynamicstrength;(2)Thefaultisrare;(3)Thelifeexpectancyisincreasedby2-3times;(4)Strongbendingresistance;(5)Easytodisassembleandassemble.

2019-01-03

Scraper conveyor failure type and cause analysis

Scraperconveyorfailuretypeandcause1.Scraperdamage:Thesqueegeedamageismostlybentandexcessivelyworn,andafewarecracking.Themainreasonforthisisthatthechutelayingdoesnotmeetthedesignrequirementsandexceedstherequiredbendingangle;thejointatthechuteinterfaceisnotgood,causinglocaldeformationofthechute;largecoalorvermiculiteissuddenlysqueezedduringoperation,sothatthescraperissubjectedtocomparison.Largeimpactforce;whenthespacingofadjacentsqueegeesexceedsthedesignrequirements,thelong-termoperationcausestheloadonthesqueegeetoexceedthelimit.2.Thescraperchainfallsoffonthesprocket:thescraperchaincannotbenormallymeshedwiththesprocket,andtheso-called“jumpingtooth”phenomenonoccurs.Themainreasonsforthisare:thebendingangleofthetransitiongroovebetweenthemachineheadandthemachineheadistoolarge;theplateinthetransitiongrooveofthemachineheadisnotflat;thesprocketwearsseriouslyorbitesintothedebris;thetightnessofthetwochainsisinconsistent;thescraperisseriouslyskewedorspacedBig.3.Thescraperchainisreleasedinthechute:themainreasonisthatthescraperconveyorisnotflattenedwhenitislaid,butisconvexlyconvexandover-curved;thescraperorchuteisseriouslyworn,sothatthescraperThegapbetweentheplateandthechuteistoolarge;thelengthofthetwochainsisdifferent,theforceisuneven;theexcessivedeformationofthescrapercausesthechainlengthofthescraperchaintobeshortened;thepre-tensionofthescraperchainisinsufficient,andthesheareriscuttothetailofthescraperAtthetime,theloadofthescraperchainisincreased,theelongationofthechainisincreased,andthechainiscausedatthetailofthemachine,sothatthescraperiseasilyremovedfromthechute.4.Damagetothelinkring:Inthecurrentsituationofthecontinuousimprovementofthereliabilityofthedomesticringchain,thefatiguelifeofthelinkringisquitedifferentfromthatoftheringchain.Inactualuse,thelinkringbecomesthewholeTheweakerlinkinthescraperchain.Itsdamageformismainlyfracture,whichismainlycausedby:alternatingpulsatingloadforalongtime,fatiguedamageoccursunderwaterfarbelowthebreakingtension;theconnectingboltorpinlooseningandfallingoff,cannotbereplenishedintime.Causesunevenforceorcannotbestressed;whenusedintheverticalring,theunilateralwearisserious,ifthesawtoothorarctoothlinkisnotreplacedintime,itispronetobreak;afterthechain,itwillgeneratealargedynamicloadandTheimpactload,combinedwiththefluctuationofthespeedofthescraperchain,makestherunningofthescraperchainlessstable,whichcausesthelinkringtobreak;themanufacturingqualityispoor,thestandardisnotmet,thehardnessislow,theweariseasy,orthestressconcentrationpointoccurs.Itispronetofatiguecracks,resultingininsufficientstrength.

2019-01-03

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