Yuav ua li cas Elastic Clips Fail nyob rau hauv qaug zog
Ib qho elastic clip yog tsim los deflect nrog txhua lub tsheb ciav hlau hla thiab caij nplooj ntoos hlav rov qab. Qhov kev rov kho dua ntawd ua rau lub voj voog kev ntxhov siab hloov pauv, thiab qaug zog yog qhov kev puas tsuaj ntawm cov voj voog. Kev ua tsis tiav tsis yog ib qho kev tshwm sim dhau los: nws yog qhov kev loj hlob qeeb ntawm qhov tawg los ntawm qhov pib me me kom txog rau thaum seem seem tsis tuaj yeem nqa lub nra, thaum lub sijhawm ntawd cov pob txha tawg tsis muaj ceeb toom. Vim hais tias ib tug tawg clip tso tawm txoj kev tsheb ciav hlau, kev qaug zog tswj yog ib feem tseem ceeb ntawm fastener zoo thiab txij nkawm.
Cov saw puas muaj plaub qhov txuas. Ua ntej, kev ntxhov siab concentration: khoov cheeb tsam ntawm clip nqa qhov kev ntxhov siab tshaj plaws thiab yog qhov twg microcracks pib. Qhov thib ob, cov khoom siv: cov khoom siv los yog cov khoom siv sab hauv ua raws li qhov chaw pib tawg thiab ua kom loj hlob sai. Thib peb, hnav khaub ncaws saum npoo: ntev - lub sij hawm vibration hnav qhov chaw tiv tauj, txo qhov kev coj tus kheej zoo thiab ua rau muaj kev ntxhov siab hauv zos. Plaub, corrosion: xeb pits ntawm qhov chaw tsim cov kev ntxhov siab hauv zos uas hloov cov teeb meem hnav qeeb mus rau qhov teeb meem qaug zog.
Tsim Cov Kev Ntsuas Uas Ua Rau Kev Nyuaj Siab Ua Neej
Hla -section shaping: zam cov npoo ntse hauv ntu clip kom kev ntxhov siab ntws zoo nyob ib ncig ntawm qhov khoov.
Hloov cov fillets: nthuav lub vojvoog fillet ntawm qhov khoov qhov chaw kom kis kev ntxhov siab nyob rau thaj tsam dav.
Ua haujlwm stroke: tsim qhov deflection ntau yam kom cov clip tsis dhau nws qhov kev txwv elastic hauv kev pabcuam; over stroke txhais tau hais tias kev ntxhov siab ntau dhau.
Symmetrical geometry: sib npaug ntawm cov rog kom tsis muaj ib sab ntawm cov clip hauv zos overloaded.
Nto tiav: tswj decarburization thiab nto roughness los ntawm kev sib sau thiab kev kho cua sov, txij li ob qho tib si pub tawg pib.
Ua ke cov kev ntsuas no txo qis qhov siab hloov pauv kev ntxhov siab thiab ncua kev pib tawg, uas yog qhov uas lub neej qaug zog yeej.
Kev kho deg thiab nws cov teebmeem ntawm qaug zog
Kev kho deg ua haujlwm ntawm ob sab pem hauv ntej. Txhaj peening hammers lub clip nto nrog lub zog txhaj tshuaj, tawm hauv ib txheej ntawm compressive residual kev nyuaj siab uas offsets ib feem ntawm kev ua hauj lwm tensile kev nyuaj siab; lub tawg yog li ntawd yuav tsum tau kov yeej lub compression barrier ua ntej nws yuav loj hlob, uas markedly extends lub neej. Txheej tiv thaiv corrosion uas yuav ua rau qaug zog - pib pits. Galvanizing tiv thaiv xeb thiab ntxiv qhov tawv tawv uas txo qhov hnav-tsav qaug zog; qhov twg fretting thiab xav tau kev ua tau zoo corrosion yog yuav tsum tau, ib tug zinc -aluminium flake txheej muab ntsev ntev - tshuaj tsuag kuj thiab zoo lubrication. Kev kho mob tsis txaus tawm ntawm qhov tsis xws luag thiab ua rau lub neej qaug zog ntau dua li lwm yam.
Fatigue Life Requirements los ntawm Kab Hom
| Hom kab | Kev qaug zog lub neej | Yog vim li cas |
|---|---|---|
| High - txoj kev tsheb ciav hlau ceev | Tsawg kawg yog 20 lab lub voj voog | Siab - zaus alternating loads ntawm ceev |
| Heavy-kab kab | Yam tsawg kawg yog 15 lab lub voj voog ntxiv rau kev xeem dhau | Cov loads loj dua rau ib lub voj voog |
| Kev tsheb ciav hlau hauv nroog | Tsawg kawg yog 18 lab lub voj voog | Nquag pib thiab nres |
| Ordinary railway | 10 lab lub voj voog | Kev siv zog qis dua |
Qhov kev xav tau yuav tsum ua kom haum rau kev ua haujlwm ntawm txoj kab. Kev qhia ib daim kab xev metro rau ntawm txoj kab hnyav - txoj kab tsheb thauj mus los, lossis hnyav - lub tsheb thauj khoom ntawm txoj kab siab - nrawm, nyob rau hauv - tsim lub fastener los yog nkim nyiaj ntawm lub peev xwm tsis siv.
Nthuav Nthuav Kev Puas Tsuaj Hauv Kev Kho
Kev kuaj pom pom: kuaj xyuas cov kab nrib pleb, deformation thiab xeb ntawm qhov clip nto, tsom rau ntawm qhov khoov thaj tsam qhov twg qaug zog pib.
Ultrasonic flaw detection: pom micro qaug zog tawg hauv lub cev clip uas tsis pom ntawm qhov chaw.
Clamping-force trending: ntsuas tus ntiv taw load; ib qho poob ntau tshaj 10 feem pua ntawm tus nqi tsim tawm qhia tias kev qaug zog puas tsuaj lossis teeb tsa mus tas li tau tshwm sim.
Risk-raws li lub sijhawm: ntawm cov kab laus, ua kom luv luv ntawm lub voj voog tshuaj ntsuam thiab tsom mus rau qhov siab - qhov chaw muaj kev ntxhov siab xws li kev tawm mus, txuas hniav thiab ntu nkhaus.
Kev tshawb nrhiav raws sij hawm thiab hloov cov clips qaug zog kom tsis txhob muaj qhov cuam tshuam sai sai uas hloov qhov teeb meem txij nkawm mus rau qhov teeb meem kev nyab xeeb.
Cov lus nug nquag
Vim li cas cov clips tawg ntawm qhov khoov es tsis yog hauv cov ntu ncaj?
Qhov khoov yog qhov twg qhov kev sib hloov khoov kev ntxhov siab concentrates thaum deflection. Txawm tias lub qhov dej -tsim clip nqa nws qhov kev ntxhov siab siab tshaj plaws nyob rau ntawd, yog li kev pib tawg yog kev txheeb cais ntawm thaj tsam khoov.
Kev txhaj tshuaj peening ua tau dab tsi?
Nws txias - ua haujlwm ntawm qhov chaw thiab tawm qhov kev ntxhov siab uas nyob hauv qab. Cov kab nrib pleb yuav tsum kov yeej qhov compression ua ntej nws tuaj yeem nthuav tawm, uas ncua kev tawg tawg thiab ncua lub neej qaug zog.
Muaj pes tsawg lub voj voog yuav tsum ib daim clip ciaj sia?
Tsawg kawg yog 20 lab rau cov kab siab -cov kab nrawm, 18 lab rau kev tsheb ciav hlau hauv nroog, 15 lab nrog kev ntsuas tshaj rau cov kab hnyav- cov kab, thiab 10 lab rau kev tsheb ciav hlau zoo tib yam.
Lub zog clamping siv li cas los kuaj xyuas kev noj qab haus huv?
Clamping quab yuam yog ntsuas raws sij hawm thiab muab piv nrog tus nqi tsim. Ib qho poob ntawm ntau tshaj 10 feem pua ntawm kev qaug zog puas tsuaj lossis teeb tsa mus tas li thiab ua rau muaj kev hloov pauv.
Cov clips rusted puas tuaj yeem ntxuav thiab rov siv dua?
Tsis yog. Corrosion pits yog kev ntxhov siab: kev tu kom rov zoo li qub tab sis tsis yog lub zog qaug zog. Clips nrog pom pitting yuav tsum tau hloov.
Thaum twg yuav tsum tau hloov clips hauv kev pabcuam?
Ntawm qhov pom cov kab nrib pleb lossis deformation, ntawm clamping - quab yuam poob tshaj 10 feem pua, ntawm ultrasonic indications ntawm sab hauv cracking, los yog thaum kawg ntawm lub tsim nyog qaug zog lub neej rau hom kab.