Rail spike khoom xaiv technology thiab anchoring adaptation schemes rau ntau hom pw tsaug zog
Dab tsi yog cov txheej txheem xaiv cov khoom rau spikes yoog rau cov pob zeb pw?
Lub hauv paus ntawm cov khoom xaiv rau spikes yoog rau cov pob zeb pw tsaug zog yog kom sib npaug lub zog thiab kev tiv thaiv corrosion. Ua ntej, 45 # carbon steel raug xaiv, uas muaj lub zog tensile Ntau dua lossis sib npaug ntawm 600MPa thiab lub zog tawm los Ntau dua lossis sib npaug rau 355MPa tom qab quenching thiab tempering, ua tau raws li qhov xav tau ntawm kev ntxhov siab ntawm cov pob zeb pw tsaug zog anchoring. Qhov saum npoo ntawm qhov ntsia hlau yog raug kub- dip galvanizing thiab passivation kev kho mob, nrog zinc txheej thickness Ntau dua los yog sib npaug rau 100μm thiab passivation zaj duab xis thickness Ntau dua los yog sib npaug rau 1μm, uas txhim kho corrosion kuj ntawm cov ntsia hlau loj thiab yoog mus rau qhov chaw ntub dej nyob ib puag ncig cov pob zeb pw tsaug zog, nrog rau ntsev tsuag tshuaj tiv thaiv corrosion lub sij hawm ntau dua 10 teev. Cov xov tshwj xeeb ntawm cov ntsia hlau loj yog M24 × 180mm nrog cov xov precision ntawm qib 6g, kom ntseeg tau qhov sib txuam nrog cov txiv ntoo anchoring, thiab cov xov profile lub kaum sab xis yog 60℃kom cov kabmob ntawm cov xov. Tsis tas li ntawd, lub taub hau ntawm tus ntsia hlau txais yuav lub taub hau countersunk tsim nrog ib tug countersunk qhov tob ntawm 5 hli, uas yog flush nrog rau saum npoo ntawm lub anchoring qhov ntawm lub pob zeb pw tsaug zog, zam lub protrusion ntawm lub taub hau spike cuam tshuam rau nteg flatness ntawm txoj kev tsheb ciav hlau. Thaum kawg, ob lub voj voog nrog qhov siab ntawm 3 hli yog teem rau ntawm tus pas nrig, uas tuaj yeem txhim kho qhov tuav ntawm qhov ntsia hlau loj thiab cov khib nyiab anchoring, tiv thaiv cov kab nrib pleb los ntawm loosening nyob rau hauv ntev - lub sij hawm loads, thiab txhim kho tag nrho stability ntawm lub anchoring system.
Dab tsi yog qhov kev xaiv ntawm cov khoom siv thiab kev ntsuas kev ua kom zoo rau cov spikes yoog rau cov ntoo pw?
Cov khoom xaiv ntawm spikes yoog rau cov ntoo pw tsaug zog yuav tsum tau tsom rau kev tiv thaiv corrosion thiab tiv thaiv kev sib cais ntawm cov ntoo. Ua ntej, qis- carbon steel raug xaiv nrog cov ntsiab lus carbon tswj ntawm 0.15%-0.25%. Cov khoom no muaj cov tawv tawv zoo heev, tsis yooj yim rau kev tawg thaum lub sij hawm rauj installation, thiab zam kev sib cais ntawm ntoo los ntawm cov hardness ntau dhau ntawm siab - carbon steel. Qhov saum npoo ntawm qhov ntsia hlau loj yog tiv thaiv -corrosion kho nrog kub- dip galvanizing thiab roj txheej tiv thaiv ob, nrog zinc txheej thickness Ntau dua los yog sib npaug rau 80μm thiab cov roj txheej thickness ntau dua los yog sib npaug li 5μm, tiv thaiv kab mob xeb thiab ntoo lwj. Nyob rau hauv cov nqe lus ntawm anchoring optimization ntsuas, lub ntsis ntawm lub spike txais ib tug conical tsim nrog lub khob hliav qab lub kaum sab xis ntawm 30 degree, uas pab txhawb rau hammering cov ntsia hlau loj rau hauv ntoo sleeper thiab txo qhov tshwm sim ntawm ntoo splitting. Cov pas nrig ntawm cov ntsia hlau loj yog nruab nrog cov kab sib txuas los tiv thaiv kab nrog qhov sib nrug ntawm 10mm thiab qhov tob ntawm 1mm, ua kom muaj kev sib txhuam ntawm cov ntsia hlau loj thiab cov ntoo, txhim kho lub zog anchoring, thiab lub zog anchoring yuav tsum siab dua los yog sib npaug rau 30kN. Tsis tas li ntawd, thaum lub sij hawm installation, nws yog ib qhov tsim nyog yuav tsum tau xyaum ib lub qhov nyob rau hauv lub ntoo sleeper ua ntej, nrog ib tug lub cheeb ntawm 2 hli me dua lub spike inch, thiab ces ntsia hlau ntsia hlau loj nyob rau hauv es tsis txhob ntawm hammering, uas ntxiv yuav txo tau cov kev pheej hmoo ntawm ntoo sleeper splitting thiab xyuas kom meej lub uniform anchoring qhov tob ntawm spikes.
Dab tsi yog cov khoom siv tshwj xeeb rau spikes yoog rau cov neeg pw tsaug zog sib xyaw?
Cov khoom tshwj xeeb uas yuav tsum tau rau spikes yoog rau cov neeg pw tsaug zog sib xyaw yog kom phim cov elastic modulus ntawm cov khoom siv sib xyaw kom tsis txhob muaj kev tsaug zog tawg los ntawm kev sib txawv rigidity. Ua ntej, stainless hlau raug xaiv, qauv 304 stainless hlau, uas nws elastic modulus nyob ze rau ntawm cov khoom siv pw tsaug zog, uas tuaj yeem txo cov kev ntxhov siab ntawm qhov chaw anchoring. Cov hlau tsis muaj steel hlau muaj lub zog tensile Ntau dua lossis sib npaug ntawm 520MPa thiab lub zog tawm los Ntau dua lossis sib npaug rau 205MPa, ua tau raws li qhov xav tau kev ntxhov siab ntawm kev sib tsoo, thiab muaj kev tiv thaiv corrosion zoo heev yam tsis muaj kev tiv thaiv corrosion ntxiv. Lub spike txais kev nthuav dav bolt qauv tsim, thiab lub tes tsho nthuav dav yog ua los ntawm cov khoom siv nylon, uas muaj kev sib raug zoo nrog cov neeg pw tsaug zog. Tus nqi nthuav dav ntawm lub tes tsho nthuav tawm yog tswj ntawm 5% -8%, ua kom lub zog ruaj khov thaum tsis txhob pw tsaug zog tawg. Tsis tas li ntawd, lub taub hau torque ntawm qhov ntsia hlau loj yuav tsum tau tswj nruj me ntsis ntawm 25-30N·m; torque ntau dhau yuav ua rau tawg nyob ib ncig ntawm lub qhov anchoring ntawm lub sleeper, thaum tsis txaus torque yuav ua rau tsis txaus anchoring quab yuam. Qhov kev ntsuam xyuas lub zog ntawm lub pob txha yuav tsum siab dua lossis sib npaug li 45kN kom ua tau raws li cov kev xav tau ntawm cov neeg pw tsaug zog sib xyaw, thiab kev sim qaug zog yuav tsum tau ua nrog lub voj voog qaug zog ntau dua lossis sib npaug rau 1 × 10⁶ lub sij hawm nyob rau hauv simulated loads.
Dab tsi yog cov ntsiab lus tseem ceeb ntawm qis - qhov kub thiab txias xaiv cov khoom siv rau spikes yoog rau cov neeg pw hauv thaj tsam alpine?
Lub hauv paus ntawm qis- kub xaiv cov khoom siv rau spikes yoog rau cov neeg pw tsaug zog hauv thaj chaw alpine yog txhawm rau txhim kho qis- qhov kub thiab txias thiab tsis txhob qis- qhov kub thiab txias tawg. Ua ntej, Q355D qis-kub steel raug xaiv, uas muaj kev cuam tshuam lub zog Ntau dua lossis sib npaug ntawm 34J ntawm -40 degree, zoo heev qis-kub toughness, thiab tsis yooj yim rau brittle puas. Qhov saum npoo ntawm qhov ntsia hlau yog raug rau zinc infiltration kev kho mob nrog zinc infiltration txheej thickness Ntau dua los yog sib npaug rau 60μm, uas muaj corrosion kuj zoo dua thiab qis - kub stability dua kub-dip galvanizing txheej, thiab muaj peev xwm tiv taus dej khov, daus thiab deicing tus neeg saib xyuas corrosion hauv thaj tsam alpine. Cov xov ib feem ntawm qhov ntsia hlau loj yog kho nrog qis- qhov kub thiab txias lubrication thiab coated nrog qis- roj roj nrog qhov chaw khov qis dua los yog sib npaug rau -50 degree, kom ntseeg tau tias kev txhim kho du thiab disassembly ntawm cov ntsia hlau loj hauv qis - qhov kub thiab txias ib puag ncig thiab tsis txhob xov xov. Tsis tas li ntawd, qhov kev hloov pauv ntawm lub vojvoog ntawm lub taub hau thiab tus pas nrig ntawm qhov ntsia hlau loj yog nce mus rau 10 hli, txo cov kev ntxhov siab nyob rau hauv qis - qhov kub thiab txias thiab txhim kho qhov qaug zog tiv thaiv ntawm qhov ntsia hlau loj. Qhov qis - qhov ntsuas kub ntawm qhov ntsuas kub yuav tsum tau nqa tawm ntawm -40℃nrog lub voj voog qaug zog Ntau dua lossis sib npaug li 1 × 10⁶ lub sij hawm kom ntseeg tau tias kev pabcuam ruaj khov hauv thaj chaw alpine, thiab kev ntsuas lub voj voog khov-thaw yuav tsum tau ua nrog lub zog anchoring quab yuam attenuation tsawg dua lossis sib npaug rau 5% tom qab.
Dab tsi yog qhov ntsuas ntsuas thiab cov qauv kev lees paub rau kev hloov pauv ntawm cov khoom siv dav dav thiab cov neeg pw tsaug zog?
Cov cim qhia txog kev hloov pauv ntawm cov ntaub ntawv spike thiab cov neeg pw tsaug zog feem ntau suav nrog plaub yam: tensile zog, corrosion resistance, anchoring force thiab low -temperature toughness. Lub zog tensile raug kuaj pom los ntawm lub tshuab ntsuas tensile: spikes rau cov pob zeb pw tsaug zog yuav tsum siab dua lossis sib npaug ntawm 600MPa, rau cov ntoo pw tsaug zog ntau dua lossis sib npaug rau 400MPa, thiab rau cov neeg pw tsaug zog ntau dua lossis sib npaug ntawm 520MPa; corrosion kuj yog kuaj los ntawm kev ntsuam xyuas ntsev tsuag: kub-dip galvanized spikes muaj lub sij hawm corrosion kuj ntau dua los yog sib npaug rau 1000 teev, thiab stainless hlau spikes tsis tas yuav kuaj; Lub zog quab yuam yog kuaj pom los ntawm lub tshuab rub- tawm lub tshuab kuaj: spikes rau pob zeb pw tsaug zog yuav tsum siab dua lossis sib npaug li 60kN, rau cov ntoo pw tsaug zog ntau dua lossis sib npaug rau 30kN, thiab rau cov neeg pw tsaug zog ntau dua lossis sib npaug rau 45kN; qis- qhov kub thiab txias yog kuaj pom los ntawm lub tshuab kuaj qhov cuam tshuam: spikes rau thaj tsam alpine muaj kev cuam tshuam lub zog Ntau dua lossis sib npaug ntawm 34J ntawm -40℃. Cov qauv kev lees paub tau muab faib ua raws li hom kev pw tsaug zog: txhua qhov ntsuas ntawm spikes rau cov pob zeb pw tsaug zog yuav tsum ua tau raws li cov qauv 100%, 20 spikes raug coj mus rau ib pawg, thiab yog tias 1 spikes tsis tsim nyog, yuav tsum tau muab ob npaug rau sampling; lub zog anchoring attenuation tus nqi ntawm spikes rau ntoo sleepers yuav tsum tsawg tshaj li los yog sib npaug rau 5%, thiab corrosion kuj yuav tsum tau ntau tshaj los yog sib npaug rau 800 teev; qhov nthuav dav ntawm spikes rau cov neeg pw tsaug zog sib xyaw yuav tsum tswj ntawm 5% -8%, thiab qhov sib txawv ntawm lub zog yuav tsum tsawg dua lossis sib npaug rau ± 2N·m; lub anchoring quab yuam attenuation tus nqi ntawm spikes rau thaj tsam alpine tom qab khov-thaw lub voj voog yuav tsum tsawg dua los yog sib npaug li 5%. Tom qab dhau qhov kev lees paub, qhov hloov kho hom pw tsaug zog thiab kev sim batch yuav tsum tau muab cim rau ntawm qhov chaw ntawm qhov ntsia hlau loj kom pab txhawb kev ua tau zoo tom qab.