Umsebenzi Of Bearings
Ama-bridge bearings asetshenziselwa ukudlulisa amandla kusuka ku-superstructure kuya esakhiweni esingaphansi, okuvumela izinhlobo ezilandelayo zokunyakaza kwe-superstructure: Ukunyakaza kokuhumusha;kuwukufuduka eziqondisweni eziqondile nezivundlile ngenxa yamandla angaphakathi kwendiza noma angaphandle kwendiza njengomoya nesisindo somuntu siqu.Ukunyakaza okujikelezayo;ngenxa yezikhathi.Kuze kube maphakathi naleli khulu leminyaka, ama-bearings ayesetshenziswa ayehlanganisa izinhlobo ezilandelayo:
· Phina
· Irola
· I-Rocker
· Metal beya bearings
Iphinikhodi liwuhlobo lwamabheringi angaguquki amukela ukuzungezisa ngokusebenzisa insimbi.Ukunyakaza kokuhumusha akuvunyelwe.Iphinikhodi engaphezulu yakhiwe izindawo ezihlehlisiwe ezingenhla nezingezansi ezinephinikhodi eyisiyingi eqinile phakathi kwayo.Ngokuvamile, kunamakepisi kuzo zombili iziphetho zephini ukuze iphinikhodi ingasheleli isuke ezihlalweni futhi imelane nemithwalo yokukhuphula uma kudingeka.Ipuleti elingenhla lixhunywe ku-sole plate ngokufaka ibhawudi noma ngokushisela.Ipuleti eligobile eliphansi lihlala epuleti le-masonry.I-Rotational Movement ivunyelwe.Ukunyakaza kwe-Lateral kanye nokuhumusha kukhawulelwe.
Roller Uhlobo Bearings
Ukufaka izicelo zokuzihlukanisa emshinini wodwa, kusetshenziswa i-roller kanye nebhola.Kuhlanganisa ama-cylindrical rollers namabhola.Kwanele ukumelana nokunyakaza kwesevisi kanye nokumanzisa kuye ngezinto ezisetshenzisiwe.
I-AASHTO idinga ukuthi amarola okunweba ahlonyiswe “ngemigoqo emikhulu eseceleni” futhi aqondiswe igiya noma ezinye izindlela zokuvimbela ukunyakaza okuhlangene, ukutsheka, nokunwabuzelayo (AASHTO 10.29.3).
I-drawback evamile kulolu hlobo lokuthwala ukuthambekela kwalo ukuqoqa uthuli nemfucumfucu.Ukunyakaza kwe-longitudinal kuvunyelwe.Ukunyakaza kwe-Lateral kanye Nokuzungezisa kukhawulelwe.
I-Rocker Type Bearing
I-rocker bear iwuhlobo lokunwebeka oluza ngezinhlobonhlobo ezinkulu.Ngokuvamile liqukethe iphinikhodi phezulu elisiza ukuzungezisa, kanye nendawo egobile ezansi evumela ukunyakaza kokuhumusha.Ama-rocker kanye nama-pin bearings asetshenziswa ngokuyinhloko kumabhuloho ensimbi.
Ama-Sliding Bearings
Ibheyili eshelelayo isebenzisa ipuleti elilodwa lensimbi elishelela kwelinye ukuze kufakwe ukuhumusha.I-sliding bearing surface ikhiqiza amandla aphikisanayo asetshenziswa ku-superstructure, substructure, kanye ne-bearing ngokwayo.Ukuze kuncishiswe la mandla okungqubuzana, i-PTFE (i-polytetrafluoroethylene) ivamise ukusetshenziswa njengento eshelelayo yokugcoba.I-PTFE kwesinye isikhathi ibizwa nge-Teflon, ebizwa ngegama elisetshenziswa kakhulu le-PTFE.Ama-Sliding Bearings angasetshenziswa yedwa noma asetshenziswe kaningi njengengxenye kwezinye izinhlobo zamabheringi.Ama-bearings ahlanzekile angasetshenziswa kuphela uma ukuzungezisa okubangelwa ukuchezuka kuzisekelo kunganakwa.Ngakho-ke zikhawulelwe kubude be-span obungamamitha ayi-15 noma ngaphansi nge-ASHTO [10.29.1.1]
Amasistimu okuslayida ane-coefficient echazwe ngaphambilini yokungqubuzana anganikeza ukuhlukaniswa ngokunciphisa ukusheshisa namandla adluliswayo.Izilayidi ziyakwazi ukuhlinzeka ukumelana ngaphansi kwezimo zesevisi, ukuguquguquka nokugudluzwa ngamandla ngokuslayida ukunyakaza.Izilayidi ezinomumo noma eziyindilinga zivame ukuthandwa kunezinhlelo zokuslayida eziyisicaba ngenxa yomphumela wazo wokubuyisela.Izilayidi eziyisicaba azinikezi amandla okubuyisela futhi akhona amathuba okufuduka ngenxa yokuzamazama okulandelayo.
I-Knuckle Pinned Bearing
Kuwuhlobo olukhethekile lwe-Roller Bearing lapho iphinikhodi ye-Knuckle inikezwa khona ukuze inyakaze kalula.Iphinikhodi ye-knuckle ifakwa phakathi kokulingisa okuphezulu nangaphansi.Ukulingisa okuphezulu kunamathiselwe kusakhiwo esikhulu seBridge, kuyilapho ukulingisa okuphansi kuncike ochungechungeni lwamarola.Iphinikhodi ye-nuckle ingakwazi ukuthwala ukunyakaza okukhulu futhi ingakwazi ukuthwala ukuslayida kanye nokunyakaza okujikelezayo
Amabhodwe Ebhodwe
IBHODINI liqukethe isilinda sensimbi engashoni, noma ibhodwe, ku-eksisi emile enediski ye-neoprene elincanyana kunesilinda futhi lifakwe ngokuqinile ngaphakathi.Ipiston yensimbi ingena ngaphakathi kusilinda futhi ibhere ku-neoprene.Izindandatho zethusi eziyisicaba zisetshenziselwa ukuvala irabha phakathi kwepiston nebhodwe.Irabha iziphatha njengoketshezi lwe-viscous olugelezayo njengoba kungenzeka ukuzungezisa.Njengoba ukuthwala ngeke kumelane nezikhathi zokugoba, kufanele kuhlinzekwe ngesihlalo sebhuloho elilinganayo.
I-Plain Elastomeric Bearings (Bheka i-PPT)
I-Laminated Elastomeric Bearings
Amabhere akhiwe ngezingqimba ezivundlile zenjoloba yokwenziwa noma yemvelo ezendlalelo ezincanyana eziboshwe phakathi kwamapuleti ensimbi.Lawa ma-bearings ayakwazi ukusekela imithwalo ephakeme eqondile enokukhubazeka okuncane kakhulu.Lawa ma-bearings ayakwazi ukuguquguquka ngaphansi kwemithwalo yangemuva.Amapuleti ensimbi avimbela izingqimba zenjoloba ukuthi zingaqhume.Ama-lead cores ahlinzekwa ukuze kwandiswe umthamo wokudambisa njengoba ama-plain elastomeric bearings enganikezi ukudambisa okubalulekile.Imvamisa athambile ekuqondeni okuvundlile futhi aqinile aqonde mpo.
Iqukethe ibhere ye-elastomeric elaminate efakwe isilinda sokuhola maphakathi nendawo yokuthwala.Umsebenzi wengxenye ye-raber-steel laminated ye-bearing ukuthwala isisindo sesakhiwo futhi unikeze ukunwebeka kwe-post-isivuno.I-lead core yakhelwe ukonakala ngokwepulasitiki, ngaleyo ndlela inikeze ukuchithwa kwamandla okudambisa.Amabheringi erabha yomthofu asetshenziswa ezindaweni ezinyakazayo ngenxa yokusebenza kwawo ngaphansi kokuzamazama komhlaba.
Isikhathi sokuthumela: Nov-22-2022