Muaj nuj nqi thiab Load Path ntawm Railway Sleeper Screw
Lub tsheb ciav hlau sleeper ntsia hlau, tseem hu ua cov ntsia hlau ntsia hlau, yog lub ntsiab lus uas txuas lub tsheb ciav hlau fastening los ua ke rau lub cav ntoo los yog, los ntawm lub ntsaws dowel, mus rau lub pob zeb pw. Cov ntsia hlau hla dhau ntawm txoj kev tsheb ciav hlau thiab lub rooj zaum hauv qab, thiab nws hloov lub log ntsug thiab cov kev taw qhia sab nraud rau hauv lub clamping quab yuam nqa los ntawm cov ntoo fibers lossis los ntawm cov xov dowel. Thaum lub clamping quab yuam decays, txoj kev tsheb ciav hlau ko taw tsis muaj kev txwv, ntsuas qhov dav dav nyob rau hauv kev thauj khoom, thiab lub neej qaug zog ntawm ob qho tib si tsheb ciav hlau thiab pw tsaug zog poob sai. Cov kev cai hauv qab no yog li tswj tau ntau tshaj li tus nqi ntawm ib qho kev tivthaiv: lawv teem caij tu ncua ntawm tag nrho cov seem.
Kev xaiv cov khoom siv thiab kev tswj hwm tus qauv
Screw spikes rau txoj kev tsheb ciav hlau yog tsim los ntawm qis-carbon thiab nruab nrab- carbon structural steels. Q235A carbon structural steel rau GB / T 700 yog qhov kev xaiv tus qauv rau kev taug qab thiab loj- ntim cov haujlwm vim tias nws sib xyaw ua kom muaj zog txaus nrog cov qauv tsim tau zoo thiab kev kwv yees forging tus cwj pwm. Nruab nrab-carbon thiab qis- alloy steels raug xaiv qhov twg yuav tsum muaj lub zog clamping ntau dua lossis lub sijhawm ua haujlwm ntev dua, piv txwv li ntawm cov kab uas hnyav qag loads lossis nyob rau hauv nkhaus nrog kev xav tau siab. Cov khoom lag luam ib txwm muab tawm tsam kev tsheb ciav hlau ceev ceev xws li UIC 864-1 thiab AS 1085.18, nrog cov khoom siv kho tshuab tau hais los ntawm ISO 898-1 lub moj khaum. Qib, kev kho cua sov thiab cov txheej txheem yuav tsum tau teev tas li ntawm daim ntawv pov thawj tshuaj xyuas.
Chemistry thiab qib yuav tsum ua raws li qhov kev txiav txim yuav khoom, nrog rau cov cua sov- tus lej traceability los ntawm billet mus rau cov ntsia hlau tiav.
Tsis muaj qhov txias kaw, laps lossis forging tawg tau txais, tshwj xeeb tshaj yog nyob rau ntawm lub khob hliav qab.
Ib qho tawg khiav los ntawm lub khob rau hauv lub shank yog qhov laj thawj rau kev tsis lees paub ntau.
Xov, Lub taub hau thiab nto yuav tsum tau
Xov zoo raug txheeb xyuas nrog mus thiab tsis muaj - mus ntsuas qhov ntev ntawm cov xov tag nrho. Cov xov sab saud yuav tsum tsis txhob cuam tshuam nrog qhov ntsuas thiab yuav tsum tsis pub dawb los ntawm burrs, kev sib tsoo cov cim, ob chav cusps, khawb thiab cov xov tsis tiav; cov xov yuav tsum huv si thiab ua tiav raws nws cov profile. Cov xov hauv qab yuav tsum qhia cov hniav huv si yam tsis muaj kev sib cais lossis kev puas tsuaj, vim tias cov xov hauv qab yog qhov txuas nrog lub ntsaws lossis cov ntoo thiab nqa cov rub tawm - tawm. Cov ntsia hlau saum npoo yuav tsum tsis pub muaj qhov sib txawv, burrs, flash, kub hnyiab thiab dov - nyob rau hauv nplai, thiab lub taub hau yuav tsum zaum ncaj nraim rau lub rooj fastening kom lub clamping quab yuam yog sib npaug.
| Tswj cov khoom | Kev xav tau |
|---|---|
| Khoom siv | Q235A rau GB / T 700, lossis siab dua -qib steel kom xaj |
| Up xov | Ntsuas -dawb, tsis muaj burrs, ob chav cusps, khawb los yog cov xov tsis tiav |
| Hauv qab xov | Cov hniav huv si, tsis muaj kev sib cais lossis kev puas tsuaj |
| Lub khob hliav qab | Dawb los ntawm forging tawg; tsis muaj cracking txuas mus rau lub shank |
| Nto tiav | Tsis muaj indentation, burr, flash, hlawv lossis scale |
| Pov thawj load | 130 kN nro test tsis muaj rupture los yog rub cov cim |
Kev xaiv kho saum npoo
Cov txheej yog xaiv kom phim cov corrosivity ntawm lub installation ib puag ncig, qhov kev cia siab ntawm kev saib xyuas lub voj voog thiab kev sib raug zoo ntawm cov khoom nyob sib ze. Cov kev kho mob feem ntau yog oiled, tua-blasted thiab oiled, oxide dub, zinc plated, kub-dip galvanized, dacromet thiab sherardizing. Cov ntu qhuav hauv av feem ntau yog siv los ntawm cov roj los yog oxide- ua tiav cov xim dub, thaum cov kab ntug hiav txwv, qhov av, cov txiav ntub dej thiab cov seem uas tsis muaj kev cuam tshuam tam sim no hu rau txheej txheej txheej. Kev xaiv txheej yuav tsum tau kho nyob rau theem tsim kom zoo tib yam ua tiav rau cov ntsia hlau spikes, baseplates thiab clips hauv ib lub rooj sib dhos; kev sib xyaw ua tiav tuaj yeem tsim cov khub niam txiv galvanic uas ua rau kom corrosion ntawm qhov tsawg kawg nkaus.
Mechanical Testing, Inspection thiab Site Practice
Txhua qhov ntau lawm yuav raug kuaj xyuas lub cev. Cov ntsia hlau ntsia hlau yog loaded axially thiab yuav tsum tiv taus ib tug load ntawm 130 kN yam tsis tau rub tawm thiab tsis muaj cov cim uas yuav qhia tau xov stripping los yog shank tawm los. Sampling zaus, xeem ceev thiab kev lees txais cov cai tau pom zoo ntawm tus neeg yuav khoom thiab tus neeg muag khoom ua ntej tsim khoom. Kev tshuaj xyuas niaj hnub sib xyaw ua ke ntsuas qhov ntev ntawm qhov ntev, ntu pas nrig, lub taub hau geometry thiab xov suab, kev tshuaj xyuas pom ntawm lub khob hliav qab thiab xov, thiab kev txheeb xyuas cov tsos ntawm txheej. Cov ntaub ntawv ntawm cov xov tooj cua sov, hnub xeem thiab cov txiaj ntsig kev xeem tau khaws cia kom txhua tus ntsia hlau ntawm qhov chaw tuaj yeem taug qab mus rau nws qhov ntau lawm.
Cia, Tsav tsheb thiab taug qab kev ua haujlwm
Screw spikes yuav tsum tau muab cia rau hauv qab thiab tawm hauv av los tiv thaiv cov txheej, thiab lawv yuav tsum tau tsav nrog lub zog torque-tswj tshuab es tsis yog ib qho kev cuam tshuam uas tuaj yeem hle cov ntoo lossis cov dowel. Rau cov ntoo pw tsaug zog, ua ntej-drilled lossis pilot qhov txo qhov sib cais ntawm cov fibers thiab nce rub- tawm tsis kam; lub qhov taub yuav tsum ua raws li cov khoom siv fastening qhov kev pom zoo rau cov ntoo hom thiab cov ntsiab lus noo noo. Kho kom raug thiab ntsia ntsia hlau spikes kom lub clamping quab yuam nyob rau hauv nws tsim band rau tag nrho cov txij nkawm lub voj voog, uas txwv gauge widening, txo rail rollover ntawm nkhaus thiab txo tus nqi ntawm re-tamping thiab re-fastening ua hauj lwm.
FAQ
Q: Cov khoom siv dab tsi feem ntau siv rau kev tsheb ciav hlau pw tsaug zog screws?
Q235A carbon structural steel rau GB / T 700 yog tus qauv qib rau kev taug qab dav dav, thaum nruab nrab -carbon thiab qis- alloy steels yog siv qhov twg siab dua clamping quab yuam lossis ntev kev pab cuam lub neej.
Q: Cov ntaub ntawv pov thawj dab tsi yuav tsum muaj cov ntsia hlau ntsia hlau tiv taus?
Cov ntsia hlau ntsia hlau yuav tsum tiv taus qhov kev sib tw axial nro ntawm 130 kN yam tsis muaj kev tawg thiab tsis muaj cov cim ntawm cov xov.
Q: Cov kev kho deg twg muaj?
Plain oiled, txhaj-blasted thiab oiled, oxide dub, zinc plated, kub-dip galvanized, dacromet thiab sherardizing tiav yog tag nrho cov muab, xaiv raws li corrosivity ntawm qhov chaw.
Q: Cov qauv twg siv rau cov ntsia hlau spikes?
Railway fastening specifications xws li UIC 864-1 thiab AS 1085.18 feem ntau yog hais txog, nrog rau cov cuab yeej cuab tam muaj nuj nqis hais nyob rau hauv ISO 898-1 lub moj khaum.
Q: Puas yog forging tawg ntawm lub khob hliav qab tau?
Tsis yog. Lub khob hliav qab yuav tsum tsis pub dawb los ntawm forging cov kab nrib pleb, thiab cov kab nrib pleb uas txuas mus rau hauv lub shank ua rau tsis lees paub qhov cuam tshuam ntau.
Q: Vim li cas cov neeg tsav tsheb tau pom zoo rau hauv cov ntoo pw?
Pilot qhov txwv kev sib cais ntawm cov ntoo fibers thiab ua rau kom rub - tawm ntawm cov ntsia hlau, uas txhim kho txoj kev ruaj ntseg thiab txo cov zaus txij nkawm.