Rail spike xaiv: rub- tawm quab yuam thiab thauj tog rau nkoj kev ntseeg tau
Dab tsi yog qhov kev sib raug zoo ntawm txoj kev tsheb ciav hlau rub - tawm quab yuam thiab kev tsheb nqaj hlau hnyav?
Rail spike rub- tawm quab yuam nce nrog kev tsheb nqaj hlau hnyav. Rau 43kg / m rails, rub- tawm quab yuam yuav tsum siab dua lossis sib npaug li 50kN kom ruaj khov thauj tog rau nkoj. 60kg / m rails hnyav dua, nrog lub log muaj zog- tsheb ciav hlau, yuav tsum tau rub- tawm lub zog ntau dua lossis sib npaug ntawm 65kN {10} txhawm rau tiv thaiv kev tawm tsam hnyav-load rails xav tau ntau dua rub- tawm lub zog, Ntau dua lossis sib npaug li 70kN, txhawm rau ua haujlwm ntev dua thiab sab nraub qaum. Kev rub tawm tsis txaus- tawm dag zog tuaj yeem ua rau muaj qhov tshwm sim loj. Piv txwv li, nrog 60kg / m rails, rub{18}} tawm lub zog ntawm tsuas yog 55kN tuaj yeem yooj yim ua rau rub - tawm, ua rau lub ntsuas qhov dav ntawm ntau dua 3 hli. Thaum xaiv rail spikes, lub rub- tawm quab yuam yuav tsum tau ua raws li qhov hnyav ntawm kev tsheb nqaj hlau; qis-spikes specifications yuav tsum tsis txhob xaiv blindly.
Dab tsi yog cov txheej txheem kev khiav hauj lwm rau rail spike rub - tawm kev sim?
Rail spike rub- tawm kev xeem yuav tsum tau siv lub zog rub tawm - tawm apparatus, nrog rau tus nqi thauj khoom tswj ntawm 10kN / min kom ntseeg tau tias cov ntaub ntawv xeem raug cuam tshuam txog kev ua haujlwm tiag tiag. Nees nkaum rail spikes yog coj mus kuaj ib kilometer ntawm txoj kev mus rau kev ntsuam xyuas, npog cov kab sib txawv ntawm lub txaj kom tsis txhob muaj kev tsis ncaj ncees vim qhov kev coj ua kom pom tseeb. Thaum lub sij hawm sim, lub rub- tawm tester clamp yuav tsum tau nruj nreem tiv thaiv sab saum toj ntawm lub rail spike los tiv thaiv tsis sib npaug zog faib los ntawm kev cuam tshuam cov kev xeem. Yog hais tias lub rub- tawm quab yuam ntawm txoj kab tsheb ciav hlau qis dua tus nqi tus qauv (piv txwv li, 60kg / m steel rail spike < 65kN), nws yuav tsum tau rov ua dua -aschored nrog resin, thiab sim dua tom qab 24 teev. Tom qab kev sim, rub- tawm cov ntaub ntawv quab yuam rau txhua qhov kev tsheb ciav hlau yuav tsum tau sau tseg thiab lub cav tsim los muab lub hauv paus rau kev saib xyuas tom ntej.
Dab tsi yog cov ntsiab lus tseem ceeb ntawm kev tsim kho rau cov resin-anchored rail spikes?
Ua ntej kev tsim kho, lub qhov rail spikes yuav tsum tau ntxuav, tshem tawm cov khib nyiab thiab dej, xyuas kom cov phab ntsa ntawm lub qhov yog qhuav thiab huv si; txwv tsis pub, resin bonding nyhuv yuav raug cuam tshuam. Cov resin anchoring tus neeg sawv cev yuav tsum tau sib tov sib npaug raws li qhov sib piv, nrog lub sijhawm nplawm tsis pub tsawg tshaj 3 feeb, kom tsis txhob muaj pob thiab lav lub zog sib txuas. Thaum muab cov ntsia hlau ntsia hlau ntsia rau hauv qhov ntsia hlau loj, nws yuav tsum tau muab tso rau ntsug, nrog qhov sib txawv ntawm qhov tsis ntau tshaj 1 hli, kom tsis txhob tilting uas ua rau lub zog tsis sib xws. Tom qab kev ntxig, tig lub rail spike 2-3 zaug kom ntseeg tau tias muaj kev sib cuag ntawm cov resin thiab cov ntsia hlau loj thiab lub qhov phab ntsa, txhim kho adhesion. Tom qab anchoring, cia tsawg kawg 24 teev rau kev kho; tus ntsia hlau tsuas tuaj yeem dais load tom qab cov resin kho tag nrho. Kev teeb tsa ua ntej ntawm cov khoom sib txuas yog txwv tsis pub.
Feem ntau ua rau thiab kev daws teeb meem rau rail spike loosening:
Kev sib cuag tsis txaus ntawm lub tsheb ciav hlau dav hlau thiab lub hauv paus tsheb ciav hlau ua rau muaj kev ntxhov siab, ua rau nws yooj yim rau loosening tom qab kev co ntev. Kho qhov chaw spike kom ntseeg tau tias thaj chaw tiv tauj Ntau dua lossis sib npaug li 80%. Cov av thiab dej tsub zuj zuj ntawm lub txaj taug kev corrode cov kab nrib pleb thiab anchoring, txo cov adhesion. Ntxuav lub txaj khiav thiab ua kom huv si thiab qhuav. Kev laus thiab tsis ua haujlwm ntawm tus neeg sawv cev anchoring kuj yog ib qho tseem ceeb ua rau. Rail spikes laus dua 10 xyoo yuav tsum tau txais batch rub- tawm kev sim quab yuam; cov uas ua tsis tau tejyam yuav tsum tau re-anchored. Tsis txaus torque thaum lub sij hawm installation ua rau tsis tiav fixation; siv lub torque ciaj ntswj kom nruj, kom ntseeg tau tias lub zog ua tau raws li qhov yuav tsum tau ua. Yog hais tias lub qhov ntsia hlau loj yog deformed, tiv thaiv kev txhim kho, ua kom lub qhov taub loj dua, hloov nrog qhov sib xws, thiab rov ua dua - thauj tog rau nkoj.
Dab tsi tshwj xeeb yuav tsum tau ua kom tau raws li kev xaiv kev tsheb ciav hlau nyob hauv thaj tsam alpine?
Hauv thaj tsam alpine, lub caij ntuj no kub tuaj yeem poob qis dua -40 degree, yog li cov khoom siv tsheb ciav hlau yuav tsum muaj qhov tsis tshua muaj siab -kub toughness kom tsis txhob txias brittleness, thiab qis- alloy siab- lub zog steels xws li Q355D yog nyiam. Qhov qis- qhov kub thiab txias cuam tshuam lub zog (-40 degree) ntawm cov hlau no tsis tsawg dua 34J, uas tuaj yeem tiv thaiv kev ntxhov siab nyob rau hauv qis- qhov kub thiab txias ib puag ncig, zoo dua li Q235 steel zoo tib yam. Txoj kev tiv thaiv - cov txheej txheem kev xeb ntawm txoj kev tsheb ciav hlau yuav tsum tau txais cov txheej txheem sib xyaw ntawm kub -dip galvanizing + sealing txheej, nrog zinc txheej thickness ntau dua lossis sib npaug li 120μm. Cov txheej txheej sealing tuaj yeem tiv thaiv dej los ntawm kev nkag mus rau zinc txheej thaum dej khov thiab daus yaj, tsis txhob tawg thiab tev ntawm zinc txheej ntawm qhov kub thiab txias. Tus neeg sawv cev thauj khoom yuav tsum qis dua -kub resistant resin, uas nws qhov kub thiab txias tuaj yeem qis li -10 degree, thiab tom qab kho, nws tseem tuaj yeem ua kom muaj zog ruaj khov nyob rau hauv -40℃ib puag ncig yam tsis ua tsis tiav vim lub voj voog khov-thaw. Tsis tas li ntawd, cov xov hlau raug ntawm cov hlua hlau yuav tsum tau nruj me ntsis tswj kom tsis txhob muaj xov qaug dab peg tshwm sim los ntawm qhov kub thiab txias, uas cuam tshuam rau kev txij nkawm thiab disassembly nyob rau theem tom ntej, ua kom muaj kev pab cuam lub neej tsis pub tsawg tshaj 15 xyoo hauv alpine ib puag ncig.