Indlela Yokukhetha I-Sliding Bearing Efanele Yephrojekthi Yakho

Lapho beklama izinhlelo zemishini, esinye sezinqumo ezibaluleke kakhulu onjiniyela ababhekana nazo ukukhetha i-bearing efanele. Ama-sliding bearing —aziwa nangokuthi ama-plain bearing, ama-sleeve bearing, ama-bushings, noma ama-journal bearing—aphakathi kwezingxenye eziguquguqukayo nezisetshenziswa kabanzi ezisetshenziswa ezimbonini. Ngokungafani nama-rolling-element bearing asebenzisa amabhola noma ama-roller, ama-sliding bearing asebenza ngesenzo sokuslayida phakathi kwezindawo ezimbili, okwenza afaneleke ukusetshenziswa kusukela ezinjinini zezimoto kuya emishinini yokwakha.

Lo mhlahlandlela uzokuqondisa ezicini ezibalulekile okufanele uzicabangele lapho ukhetha i-sliding bearing efanele ukusetshenziswa kwakho.

Izisekelo Zokuthwala Okushelelayo

Ama-sliding bearings ayizingxenye zemishini ezenzelwe ukuvimba, ukuqondisa, noma ukunciphisa ukungqubuzana ekusetshenzisweni okujikelezayo noma okuqondile. Asebenza ngesenzo sokushelela phakathi kwendawo yokuthwala kanye ne-shaft noma ingxenye yokuhlangana, kunokuba kube isenzo sokugingqa sama-ball bearings -2. Lo mehluko oyisisekelo unikeza ama-sliding bearings izinzuzo ezihlukile, okuhlanganisa:

• Umthamo ophezulu wokuthwala umthwalo
• Idizayini encane enezidingo ezincane zesikhala
• Ukukhiqiza okungabizi kakhulu
• Ukusebenza okuthukile
• Ukufaneleka kwezinhlelo zokusebenza ezisebenza ngokunemba okuphezulu (ngokuvamile kuyathandwa kunezibhebhe zebhola ezingaphezu kuka-3,600 RPM) 

Ukusebenza kwebhereyi kunqunywa yi-coefficient of friction phakathi kwezinto ezimbili kanye nemithwalo edluliselwe ku-bearing assembly. Lezi zakhiwo zingathuthukiswa kakhulu ngokugcotshwa okufanele.

Izici Eziyinhloko Zokukhetha

1. Hlola Izidingo Zesicelo Sakho

Inqubo yokukhetha iqala njalo ngokuhlolwa okuphelele kwesicelo sakho osihlosile. Imibuzo ebalulekile okufanele uyicabangele ifaka:

• Uhlobo luni lokunyakaza oluhilelekile—olujikelezayo, olunyakazayo, noma oluqondile?
• Ziyini izimo zemvelo zokusebenza (izinga lokushisa, umswakama, ukuchayeka kumakhemikhali)?
• Ingabe uhlelo lokusebenza lungaphansi kokulayishwa okunamandla noma ukudlidliza?
• Ziyini izivinini kanye nemithwalo edingekayo?

Ukukhetha okufanele kufaka phakathi ukuhlola izici zemvelo ezifana namakhemikhali anolaka, ukungcola, amazinga okushisa aphezulu noma aphansi okusebenza, kanye nezidingo zokuhlanza—ikakhulukazi eziphathelene nokusetshenziswa kokudla neziphuzo. Isicelo ngasinye sizophakamisa izinto ezithile zokusebenza kahle.

2. Bala Inani le-PV

Inani le-PV—umkhiqizo womthwalo othize (ingcindezi) kanye nesivinini sokushelela—mhlawumbe liyipharamitha ebaluleke kakhulu ekukhetheni amabhereyi ashelelayo. Lilinganisa ikhono lezinto ezibhelelayo lokwamukela umkhawulo wokushisa okhiqizwa amandla okungqubuzana ngesikhathi sokusebenza.

Ukubalwa kwengcindezi (p):

p = F / (L × D)

Lapho u-F = umthwalo/amandla, u-L = ubude bokuthwala, kanye no-D = ububanzi bomgodi.

Ukubalwa kweVelocity (V):

V = π × D × n / (60,000)

Lapho n = ijubane lokujikeleza .

Inani le-PV linomthelela omkhulu empilweni yesevisi yokuthwala—uma inani le-PV liphansi, impilo yethwala iba yinde. Uma uhlola izinto zokwakha, qhathanisa i-PV yakho yokuklama ebaliwe nenani le-PV elilinganisiwe lezinto zokwakha. Ngezinjongo zokuklama, i-PV ebaliwe kufanele iphindwe ngesici sokuphepha ngaphambi kokuqhathaniswa nezilinganiso zezinto zokwakha.

3. Nquma Ukususwa Okufanelekile

Ukuhlukaniswa kwe-diametral kubalulekile ekusebenzeni kahle kwe-bearing. Ukuhlukaniswa kwe-diametral kumele kuhambisane nalokhu okulandelayo:

• Ukwandiswa kokushisa kwezinto zokuthwala kanye nomgodi
• Ukubekezelelana kokukhiqiza
• Izidingo zefilimu yokugcoba

Izikhala ezijwayelekile zama-bearings alula ziqala ku-0.001 kuya ku-0.002 ubukhulu be-bearings. Kuma-polymer bearings, izikhala zokugijima zivame ukuba phakathi kwama-intshi angu-0.002 no-0.004, kanti ukubekezelelana kwe-housing bore kanye ne-shaft nakho kuhambisana nokubalwa.

Ekusetshenzisweni okubandakanya ama-bearings epulasitiki, kubalulekile futhi ukucabangela ukuthi ukuvuvukala kungathinta kanjani izindawo ezivulekile ezindaweni ezinomswakama noma ezingaphansi kwamanzi.

4. Cabanga ngesilinganiso sobude kuya kububanzi (L/D)

Isilinganiso sobude kuya kobubanzi sithonya kokubili umthamo womthwalo kanye nokuqondanisa. Kuma-bearings e-hydrodynamic agcwele ifilimu, isilinganiso esivamile se-L/D sisukela ku-0.35 kuya ku-1.5. Uma i-bearings ide, ngokuvamile, kulapho ukusebenza okungcono khona maqondana nokusatshalaliswa komthwalo kanye nokuqina kokuqondanisa.

5. Hlola Izidingo Zokubopha Umgodi

Ubulukhuni bomphezulu womgodi buvame ukuba nethonya elikhulu empilweni yokusebenza. Ubulukhuni bomphezulu obungaphezu kuka-0.4 µm bungaba nomthelela omubi ekusebenzeni kwamabhere. Iziqondiso ezijwayelekile zifaka:

• Uma umthwalo usinda, kufanele kube nzima kakhulu umgodi
• Ingozi ephezulu yokungcola okufakwe ngaphakathi idinga imigoqo eqinile

Izinto zomgodi kufanele zibe yinsimbi, zibe nezinto zokuthwala njengensimbi noma ithusi eliqinile; i-aluminium noma ukhuni akufanele neze kusetshenziswe ezithweni ezishelelayo njengoba zibangela ukusebenza okunamathelayo nokuthambekela kokuminyana.

Umhlahlandlela Wokukhetha Okubalulekile

Ama-Bearings Anezingqimba Eziningi Asekelwe Ngensimbi

Ngezicelo ezidingakalayo zezimboni, ama-bushing alula e-EPEN ochungechunge lwe-EX tri-layer amelela ikhambi elithuthukisiwe. Lawa ma-bearings afaka isisekelo sensimbi esinikeza ubuqotho besakhiwo kanye nokuqhuba ukushisa, lapho kufakwa khona ungqimba lwethusi olunezimbobo. Izingxube ze-Acetal copolymer (POM) noma ze-PTFE zifakwa kungqimba lwethusi, kanye nokugcotshwa kwe-lubrication okugxishwe ebusweni.

Izici zezinto ezibonakalayo zifaka:

Ipharamitha	Value
Amandla Okulayisha Okumile	250 N/mm²
Amandla Omthwalo Onamandla	140 N/mm²
Isivinini Esiphezulu Sokushelela (Sigcotshwe Ngaphambili)	2.0 m / s
Inani le-PV	2.8 N/mm²·m/s
I-Coefficient of Friction	0.05 ~ 0.20
Operating Temperature	-40 ° C kuya ku-110 ° C

Lawa ma-bearings afanele ukunyakaza okujikelezayo nokunyakazisayo okuzigcobayo, okulwa nokuguguleka, okuphansi kokungqubuzana, kanye nokusebenza okuphansi komsindo.

I-Bronze Bearings

Ama-bearings ethusi anikeza amandla aphezulu okuthwala imithwalo futhi angaphatha ingcindezi esuka ku-25,000 kuya ku-40,000 psi ekusetshenzisweni kwe-oscillating noma rotary. Ama-composites asekelwe kuthusi anikeza ukumelana okuhle kokuguguleka futhi angalungiswa ngezinto ezahlukahlukene zokuhlanganisa:

• Izengezo ze-tin ne-aluminium zithuthukisa amandla nokuqina
• Ukwengezwa kwe-zinc kuvumela ukusebenza ngaphandle kokugcotshwa okuqhubekayo
• Ukwengezwa komthofu kunciphisa ubulukhuni ukuze kube ngcono ukushumeka

Amabhere Wokuzithambisa

Ama-bearings azigcobayo noma afakwe uwoyela aqeda isidingo sokugcoba kwangaphandle. Ithusi elicwebezelayo lingafakwa uwoyela okhishwa njengoba i-bearing ifudumala. Ama-lubricant aqinile angafakwa futhi ku-bearing matrix.

Izinzuzo zama-bearings azigcobayo zifaka:

• Ukususwa kwemigodi nemigodi kawoyela (ukunciphisa izindleko zomshini)
• Izidingo zokunakekela eziphansi
• Umklamo wemishini olula
• Indawo yokusebenza ephephile ngaphandle kokuthembela ezintweni zokugcoba uwoyela 

Ama-Polymer Bearings

Ama-bearings epulasitiki nama-composite anikeza izinzuzo eziningana ezikhangayo:

• Ukumelana nokugqwala ezindaweni ezinzima
• Ukunciphisa ukudlidliza kanye nokumuncwa kokushaqeka
• Ukwehliswa kwesisindo ngo-25% noma ngaphezulu uma kuqhathaniswa nezinye izindlela zensimbi
• Ukukhiqiza okungabizi kakhulu
• I-coefficient ephansi yokungqubuzana (0.05 kuya ku-0.15) ngaphandle kokugcotshwa kwangaphandle 

Kodwa-ke, ama-polymer bearings anokucabangela okukhethekile komklamo. I-coefficient of friction (ngokuvamile i-0.15-0.30 μ yezinhlelo zokusebenza ezisebenza ngokuma) isho ukuthi kuwo wonke umthwalo ongu-10 lbf, kudingeka amandla okushayela angu-1.5 kuya kwangu-3 lbf ukuze kuthuthwe i-bearings.

Amasu okugcoba

Ukugcoba kubalulekile ekusebenzeni okuphephile nokusebenza kahle kokuthwala. Ukugcoba okungekuhle kungaholela ekugugeni kwezinto ngokushesha kanye nokuwohloka kwemishini.

I-Hydrodynamic Lubrication

Ezinhlelweni ze-hydrodynamic, i-shaft idlula ungqimba lwe-lubricant olugeleza njalo. Lokhu kuvamile ezisetshenzisweni zesivinini esikhulu lapho kudingeka khona isivinini esingaphezu kwamakhulu ambalwa e-RPM ukuze kupompelwe uwoyela nge-bearing. Izinga lokushisa lokusebenza kumele libalwe ngokwezinto ezibhekwayo ze-viscosity ukuqinisekisa ukugcotshwa okufanele kanye nobukhulu obuncane befilimu.

Ukugcotshwa komngcele

Ezimweni zokugcoba ngomngcele, izindawo zokuthwala zihlukaniswa yifilimu encane kakhulu yokugcoba. Ama-bushing e-EX sleeve avame ukunconywa ekusebenzeni ngezikhathi ezithile kanye nasezindaweni zokugcoba ngomngcele, ikakhulukazi ngemiklamo yemigodi kawoyela yezikhathi zokugcwalisa uphethiloli okuqhubekayo noma okuphindaphindiwe.

Ukusebenza Komile

Ukuze kusetshenziswe ukusebenza okomile, amabheringi anezithambisi eziqinile ezifakwe ezintweni zokuthwala abalulekile. Lawa mabheringi anefilimu yokugcoba eqinile edalwe ukudluliselwa kwezinto kusukela kungqimba lokuthwala ukuze kuvikelwe ingxenye yokuhlangana.

Ukucatshangelwa okuqondene nohlelo lokusebenza

Izicelo Zenjini Yezimoto

Ezindaweni zenjini ezidinga amandla lapho ukucindezeleka okukhulu, amazinga okushisa aphezulu, kanye nokunyakaza okusheshayo kuyinto evamile, ama-bearings adinga amandla okukhathala angavamile. Ukusetshenziswa okubalulekile kufaka phakathi ama-bearings enduku yokuxhuma, ama-bearings amakhulu asekela i-crankshaft, kanye nama-washers acindezelayo alawula ukunyakaza kwe-axial.

Imishini Yokwakha Nokushiswa Komoya

Lezi zinhlelo ngokuvamile zidinga ama-bearings akwazi ukusingatha imithwalo esindayo ngaphansi kokusebenza ngezikhathi ezithile, ngokuvamile enezimo zokugcoba ezilinganiselwe.

Izindawo Ezinokushisa Okuphezulu Noma Eziyingozi Kakhulu

Ama-bearings asebenza emazingeni okushisa aphezulu, umswakama, ukushaqeka, noma ukudlidliza adinga izinto eziqinile nezithembekile. Uhlu oluphelele lwamazinga okushisa okusebenza azungezile kumele lucatshangelwe, njengoba amazinga okushisa ashintshayo angathinta ibanga eliphakathi kwe-bushing kanye ne-housing noma phakathi kwe-bushing kanye ne-shaft.

Uhlu Lokuhlola Olusebenzayo Lokukhetha

Ngaphambi kokuqedela ukukhetha kwakho amabhereyitha ashelelayo:

• Chaza izimo zokusebenza – Umthwalo, isivinini, izinga lokushisa, indawo ezungezile
• Bala inani le-PV - Qhathanisa nezilinganiso zezinto ezibonakalayo
• Nquma imvume edingekayo - Cabanga ngokwanda kokushisa kanye nokubekezelelana
• Khetha isilinganiso esifanele se-L/D - Balance umthwalo kanye nokuqondanisa
• Khetha isu lokugcoba – I-Hydrodynamic, umngcele, noma ukuzigcoba ngokwakho
• Hlola izindleko ezicatshangelwayo - Izindleko zokuqala uma kuqhathaniswa nezindleko zokulungisa nezomjikelezo wokuphila
• Xhumana nabakhiqizi - Sebenzisa ubuchwepheshe bezobuchwepheshe kwizicelo ezikhethekile

Isiphetho

Ukukhetha i-sliding bearing efanele kudinga ukucatshangelwa ngokucophelela izici eziningi, kusukela ezidingweni eziyisisekelo zesicelo kuya ekubalweni okuyinkimbinkimbi kwamanani e-PV kanye nokuvuleka. Ngezinketho ezisukela kuma-bearing amaningi asekelwe ngensimbi asebenza kahle kakhulu kuya kuma-polymers azigcobayo, kunesixazululo cishe kuzo zonke izinhlelo zokusebenza—kusukela ezinjinini zezimoto kuya emishinini yokwakha esindayo.

Uma ungabaza, ukubonisana nabakhiqizi abanjengo- EPEN Sliding Bearing kungakunikeza ulwazi oluwusizo ngezinto ezintsha kanye nezakhiwo zezinto, okuqinisekisa ukuthi ukhetha i-bearing efanele izidingo zephrojekthi yakho.

Imibuzo Evame Ukubuzwa

Yiziphi izici ezithinta kakhulu isikhathi sokuphila kwebhere elishelelayo?

Ukuthi i-bearing eshelelayo ihlala isikhathi esingakanani kuncike ohlotsheni lwezinto ezisetshenzisiwe, ukuthi ifakwe kahle kangakanani i-oyela, umthwalo ongaphansi kwayo, kanye nendawo ezungezile. Ama-bearing afakwe kahle i-oyela futhi asebenza ngaphakathi kwemikhawulo yomthwalo womklamo wawo angahlala amashumi eminyaka. Ngakolunye uhlangothi, ama-bearing agcwele ngokweqile noma angafakwanga kahle i-oyela, ahluleka ngokushesha kakhulu. Izimo zokugqwala, ukungcola okunamandla, kanye nokujikeleza kokushisa konke kusheshisa ukuguguleka ngenani elikhulu. Ama-bearing ethusi awaphathi ukugcotshwa okuncane kanye nezinto ezihlanganisiwe ezinamafutha akhelwe ngaphakathi.

Nginganquma kanjani ukuthi uhlelo lwami lokusebenza ludinga ama-sliding bearings noma ama-rolling element bearings?

Ama-plain bearings asebenza kahle kakhulu ezindaweni lapho kunemithwalo emikhulu, ukushaqeka, ukunyakaza okunyakazisayo, noma ukufinyelela okulinganiselwe kumafutha. Ama-rolling element bearings asebenza kahle kakhulu uma ejikeleza njalo ngesivinini esikhulu futhi engaphansi kwemithwalo emincane. Uma kunokungcola endaweni ezungezile, ama-plain bearings avame ukukhethwa ngoba angakwazi ukusingatha izinhlayiya kangcono. Ikhono lakho lokwenza ukunakekelwa kanye nesabelomali sakho nakho kudlala indima kulokhu kukhetha.

Ingabe ama-bearings alula angenza ngokuthembekile ezinhlelweni zesivinini esikhulu?

Ukuthi into ingashesha kangakanani kuncike ezintweni ezisetshenzisiwe nokuthi zigcotshwe kahle kangakanani ngamafutha. Izinto ezizigcobayo zivame ukusebenza ngesivinini esiphansi kuphela. Ama-bearings ethusi e-hydrodynamic asebenzisa uwoyela ocindezelwe ukuwagcoba asebenza kahle ngesivinini esiphezulu. Ubuningi be-PV bezinto ozikhethile bukutshela ukuthi ungashesha kangakanani ngokuya ngengcindezi yokusebenza.

Bambisana ne-Epen ukuze uthole izixazululo zakho ze-Sliding Bearing

Ukukhetha ikhambi elifanele kakhulu le-sliding bearing kuba lula uma usebenza nabakhiqizi abanolwazi abazi izinselele zomkhakha wakho. I-Jiashan Epen Bearing Co., Ltd. igxile kuma-bearing e-composite ensimbi-plastiki, imiklamo ye-bimetal, kanye nama-bearing alula ensimbi eyodwa akhonza imishini yokwakha, imishini yezimayini, izinhlelo zokusebenza zasolwandle, kanye nezinhlelo zezolimo ezimbonini ezingama-30. Ithimba lethu locwaningo lingahlaziya uhlelo lwakho lokusebenza, likusize ukhethe izinto ezifanele, futhi lidale i-bearing yangokwezifiso efanelana nezidingo zakho ngqo. Njengomkhiqizi we -sliding bearing ozinikele , sinikeza kokubili imikhiqizo ejwayelekile yekhathalogi kanye nezixazululo ezenziwe ngokwezifiso ngamanani ancintisanayo ngaphandle kokubeka ikhwalithi engcupheni. Xhumana nochwepheshe bethu bezobuchwepheshe ku-epen@cnepen.cn ukuze uxoxe ngezidingo zephrojekthi yakho, ucele amasampula omkhiqizo, noma ufinyelele ikhathalogi yethu ephelele enemininingwane eningiliziwe.

Okubhekwayo

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Neale, MJ, "Incwadi Yezincwadi Ze-Tribology," eButterworth-Heinemann, Uhlelo Lwesibili, 1995.

I-American Society of Mechanical Engineers, "ASME B18.23.1 - Izindinganiso Zokuwasha Ezilula Nezinto Zokuthwala," ASME International, 2018.

UBudynas, RG noNisbett, JK, "Umklamo Wobunjiniyela Bemishini kaShigley," Imfundo kaMcGraw-Hill, Uhlelo Lweshumi Nanye, 2020.

I-Society of Automotive Engineers, "i-SAE J459 - Ama-Bearing and Bushing Alloys - Ukwakheka Kwamakhemikhali," Izindinganiso Zamazwe Ngamazwe ze-SAE, 2019.

UHamrock, BJ, Schmid, SR, noJacobson, BO, "Izisekelo Zokugcotshwa Kwamafilimu Oketshezi," uMarcel Dekker, Uhlelo Lwesibili, 2004.