Anchorage Strength Enhancement Technology rau Rail Spikes thiab Adaptation Solutions rau ntau hom Sleeper
Dab tsi yog cov txheej txheem tseem ceeb ntawm kev siv zog ntxiv bar cog anchoring rau spikes hauv cov pob zeb pw?
Lub hauv paus ntawm kev txhawb nqa bar cog anchoring rau spikes nyob rau hauv qhob sleepers yog los txhim kho tuav ntawm spikes thiab pob zeb. Ua ntej,threaded hlau spikesraug xaiv, nrog peb -theem sib txawv pitch threads teem rau ntawm tus pas nrig, lub suab maj mam hloov ntawm 6mm mus rau 8mm, ua rau thaj chaw sib cuag ntawm cov xov thiab pob zeb, thiab lub zog anchoring tuaj yeem nce ntau dua 40%. Cov khoom siv anchoring adoptsepoxy rebar cog nplaum, uas muaj lub zog compressive Ntau dua lossis sib npaug rau 85MPa thiab lub zog sib txuas Ntau dua lossis sib npaug rau 15MPa, thiab nws rub tawm - tawm qhov tsis kam yog 3 npaug siab dua li cov tsoos cement mortar anchoring. Thaum lub sij hawm tsim kho, nws yog ib qho tsim nyog yuav tsum tau ntxuav lub qhov anchoring ntawm cov pob zeb ua pob zeb, siv lub siab - rab phom cua kom tshuab tawm cov plua plav hauv qhov, thiab qhov kev tu lub qhov mus txog Sa2.5 kom ntseeg tau tias cov nplaum cog rebar yog ze rau ntawm lub qhov phab ntsa. Lub embedding qhov tob ntawm qhov spike yog tswj ntawm 150mm. Tom qab embedded, tig lub spike los ntawm 30℃kom cov rebar cog nplaum sib npaug qhwv tus pas nrig thiab tsis txhob hollowing. Tom qab kho, rub- tawm kev sim yuav tsum tau ua. Lub rub- tawm qhov kev tawm tsam ntawm cov qauv spikes yuav tsum siab dua lossis sib npaug rau 80kN, thiab hom tsis ua haujlwm yuav tsum yog qhov tsis ua haujlwm tsis zoo dua li rub rub- tawm kom tsim nyog rau kev thauj mus los.
Dab tsi yog cov ntsiab lus tseem ceeb ntawm kev sib koom ua ke los tiv thaiv - corrosion thiab tiv thaiv -loosing tsim rau spikes hauv cov ntoo pw?
Kev sib xyaw ua ke los tiv thaiv-corrosion thiab tiv thaiv-loosing tsim rau spikes hauv cov ntoo pw tsaug zog yuav tsum sib npaug ntawm kev tiv thaiv kev tiv thaiv -corrosion yuav tsum tau ntawm ntoo thiab lub xauv cov nyhuv ntawm spikes. Ua ntej, cov khoom siv spike yogkub-dip galvanized qis- carbon steel, nrog zinc txheej thickness Ntau dua los yog sib npaug rau 120μm thiab ntsev tsuag tshuaj tiv thaiv corrosion lub sij hawm Ntau dua los yog sib npaug rau 1500 teev, tiv thaiv cov kab nrib pleb los ntawm xeb thiab nthuav dav hauv qhov chaw ntub dej, uas yuav ua rau cov ntoo pw tsaug zog tawg. Spike tip adopts apob zeb diamond bevel tsimnrog lub kaum sab xis ntawm 30 degree, uas tuaj yeem txo qhov kev tawm tsam thaum tsav tsheb, tsis txhob sib cais ntawm cov ntoo pw tsaug zog, thiab cov kab ntawm cov ntsia hlau loj tuaj yeem txhim kho lub zog tom ntawm cov ntsia hlau loj thiab ntoo. Qhov nruab nrab ntawm tus pas nrig yog muab nrog ib qhoannular anti-loosing zawjnrog qhov tob ntawm 2 hli thiab qhov dav ntawm 3 hli. Tom qab tsav tsheb mus rau hauv cov ntoo pw tsaug zog, cov ntoo fibers tau muab tso rau hauv kev tiv thaiv -loosing zawj, uas tuaj yeem tiv thaiv kom tsis txhob xoob vim lub tsheb ciav hlau vibration. Lub qhov ntsia hlau loj ntawm cov ntoo pw yog pre-coated nroganti-cov roj corrosion, uas yog ua los ntawm tung roj thiab preservatives, uas tsis tau tsuas yog txhim khu kev tiv thaiv corrosion ntawm ntoo tab sis kuj txhim kho cov kev sib txhuam ntawm cov ntsia hlau loj thiab ntoo. Tom qab kev teeb tsa, nws yuav tsum tsis tu ncua xyuas qhov nruj ntawm spikes. Yog tias pom tias loosening, sau qhov sib txawv ntawm qhov spikes nrog ntoo wedges thiab rov qab -tighten los ntawm tapping.
Dab tsi yog qhov kev hloov kho thiab kev hloov kho rau welded anchoring ntawm spikes hauv steel sleepers?
Kev hloov kho ntawm welded anchoring rau spikes hauv steel sleepers yuav tsum tau daws cov teeb meem kev sib txuas ntawm steel sleepers thiab spikes. Ua ntej, tus spike yogsiab -lub zog alloy steel ncejua los ntawm 40Cr, nrog lub zog tensile Ntau dua los yog sib npaug ntawm 980MPa thiab hardness ncav cuag HRC35-40, ua tau raws li qhov xav tau ntawm kev ntxhov siab hnyav ntawm steel pw tsaug zog. Txoj kev anchoring adoptsarc vuam vuam, siv cov ntsia hlau loj raws li ib tug stud, thiab fusing hauv qab ntawm qhov ntsia hlau loj nrog rau saum npoo ntawm steel sleeper los ntawm arc siab kub. Lub weld nkag mus yog ntau dua los yog sib npaug li 5 hli, thiab lub vuam lub zog yog ntau dua los yog sib npaug rau 90% ntawm lub hauv paus hlau lub zog ntawm cov ntsia hlau loj. Ua ntej welding, nws yog ib qho tsim nyog yuav tsum tau zom thiab derust lub nto ntawm lub steel sleeper, thiab derusting ntau yam yog 50 hli nyob ib ncig ntawm lub spike welding ib feem kom paub meej tias lub vuam nto yog tsis muaj roj thiab xeb thiab tsis txhob welding porosity thiab slag inclusion defects. Tom qab welding lub spikes,kev txuag hluav taws xob thiab kev kho cua txias qeebyog saws, npog qhov weld ib feem nrog asbestos daim ntaub, thiab lub sij hawm txias qeeb yog ntau dua los yog sib npaug li 2 teev los tiv thaiv qhov vuam ntawm qhov tawg vim qhov txias txias. Tom qab welding, ultrasonic flaw detection yuav tsum tau ua, lub Ⅰ- theem flaw nrhiav kom tau qhov tsim nyog tus nqi ntawm cov vuam yuav tsum ncav cuag 100%, thiab cov shear zog xeem yuav tsum tau nqa tawm nyob rau tib lub sij hawm, nrog lub shear bearing muaj peev xwm ntau tshaj los yog sib npaug zos rau 60kN los xyuas kom meej kev ruaj ntseg anchoring.
Dab tsi ntawm -cov txheej txheem kuaj qhov chaw thiab cov qauv tsim nyog rau kev quab yuam ntswj?
Qhov ntawm - qhov kev sim ntawm qhov kev sib tw ntawm kev sib tw anchoring siv arub- tawm lub tshuab kuaj. Thaum lub sij hawm sim, kho qhov kev sib tw ntawm rub- tawm cov cuab yeej nyob rau sab saum toj ntawm qhov ntsia hlau loj, siv qhov nro ntawm qhov nrawm ntawm 5kN / min kom txog rau thaum lub pob tw los yog puas lawm, thiab sau tus nqi siab tshaj plaws tensile. Cov txheej txheem tsim nyog rau spikes hauv cov pob zeb pw tsaug zog yog rub- tawm kev tiv thaiv Ntau dua lossis sib npaug rau 80kN, thiab hom tsis ua haujlwm yog pob zeb tsis ua haujlwm; tus qauv tsim nyog rau spikes nyob rau hauv ntoo sleepers yog rub- tawm tsis kam Ntau tshaj los yog sib npaug rau 30kN, thiab tus spikes tsis pom tseeb plam; Cov txheej txheem tsim nyog rau welded spikes nyob rau hauv steel sleepers yog shear zog Ntau tshaj los yog sib npaug rau 60kN, thiab cov weld tsis muaj cracking. Qhov piv piv rau kev sim yog 3% ntawm txhua pawg ntawm spikes, thiab tsis pub tsawg dua 10 spikes. Yog hais tias 1 spike tsis tsim nyog, muab ob npaug rau sampling; Yog hais tias ob chav sampling tseem tsis tsim nyog, qhov zoo ntawm cov batch yuav raug txiav txim raws li substandard. Tsis tas li ntawd, ntev - lub sij hawm anchoring quab yuam xyuas yog yuav tsum tau. faus cov kev ntxhov siab sensors nyob rau hauv ib txwm kab kab thiab saib tsis tu ncua rau 6 lub hlis. Lub anchoring quab yuam attenuation tus nqi tsawg dua los yog sib npaug li 5% yog tsim nyog los xyuas kom meej tias lub anchoring quab yuam ntawm tus ntsia hlau loj yog ruaj khov thaum lub sij hawm kev pab cuam.
Dab tsi yog cov txheej txheem kev xaiv thiab kev saib xyuas cov tswv yim rau spikes ntawm txawv sleepers?
Kev xaiv ntawm spikes rau cov neeg tsaug zog sib txawv yuav tsum ua raws li lub hauv paus ntsiab lus ntawm "sleeper material adaptation and force matching". Cov neeg pw tsaug zog siv threaded steel spikes + epoxy rebar cog adhesive anchoring, haum rau hnyav -haul thiab siab - kab ceev; ntoo sleepers siv kub-dip galvanized qis- cov pa roj carbon steel spikes, haum rau kev sib tw- ceev thiab hav zoov railways; steel sleepers siv 40Cr alloy steel spikes + arc stud welding anchoring, haum rau hauv nroog rail transit elevated kab. Lub tswv yim txij nkawm yuav tsum tau tsim raws li hom pw tsaug zog. Lub zog anchoring ntawm spikes nyob rau hauv qhob pw tsaug zog yog sim txhua txhua rau lub hlis. Thaum lub zog anchoring txo qis, re- txhaj rebar cog nplaum; cov spikes nyob rau hauv ntoo sleepers raug tshuaj xyuas txhua lub hlis twg. Yog tias pom loosening, ntxiv nrog ntoo wedges nyob rau hauv lub sij hawm, thiab siv anti{14}}corrosion roj ib xyoos ib zaug; cov welded spikes nyob rau hauv steel pw tsaug zog yog raug rau weld flaw detection ib xyoos ib zaug, thiab yog hais tias muaj kab nrib pleb, kho vuam yog nqa tawm nyob rau hauv lub sij hawm. Tsis tas li ntawd, tsim kom muaj cov ntaub ntawv ntsia hlau loj, sau lub sijhawm thauj khoom, cov ntaub ntawv ntsuas thiab kev saib xyuas qhov xwm txheej, thiab tsim cov phiaj xwm kev saib xyuas raws li cov ntaub ntawv txhawm rau txhawm rau txuas lub neej kev pab cuam ntawm qhov spike.