Siab -Lub zog ntsuas phoo thiab tiv thaiv-Loosing Technology rau Track Bolts/Spittles
Dab tsi yog qhov tseem ceeb ntawm cov kev faib tawm ntawm cov bolts thiab cov khoom siv tau zoo?
Track bolts tau muab faib ua peb qib tseem ceeb los ntawm lub zog: 8.8, 10.9 thiab 12.9 qib, thiab rau hauv cov bolts zoo tib yam, insulating bolts thiab siab - lub zog bolts los ntawm kev ua haujlwm, hloov mus rau qhov sib txawv accessory locking scenarios. 8.8 qib zoo tib yam bolts yog cov qauv tseem ceeb rau txoj kev tsheb ciav hlau zoo tib yam daim hlau thiab phaj ntses, ua tau raws li qhov xav tau ntawm kev xauv yooj yim nrog tus nqi pheej yig. 10.9 qib insulating bolts yog tshwj xeeb rau kev siab - kev tsheb ciav hlau ceev, haum rau W2 / X3 elastic strips, siab - ceev railway siab daim hlau thiab fishplates, nrog insulating txheej tiv thaiv -electrocorrosion thiab siab dua 1{1} locking siab- lub zog bolts yog tshwj xeeb rau kev lag luam thiab mining hnyav-lub luag haujlwm, haum rau hnyav-cov haujlwm elastic strips, kev lag luam thiab mining siab daim hlau thiab ntses phaj, nrog lub zog tensile zog tshaj, cuam tshuam thiab tiv thaiv - loosening. Cov txheej txheem txawv teb chaws tau muab faib ua UIC / BS / AREMA qauv, siv nrog cov khoom siv txawv teb chaws sib xws, qib zog ua ke nrog cov qauv thoob ntiaj teb, yoog rau hla- tej yaam num ciam teb.
Dab tsi yog hom tseem ceeb ntawm kev khiav spikes thiab qhov tseem ceeb installation thiab kho cov ntsiab lus kev cob qhia?
Track spikes yog muab faib ua plaub hom: ntsia hlau spikes, embedded spikes, ntoo sleeper spikes thiab insulating spikes, ntsia hlau spikes yog lub ntsiab qauv, haum rau pob zeb sleeper rail kho nrog yooj yim installation thiab ruaj ntseg xauv. Screw spikes yog tsim los ntawm cov txheej txheem txias taub hau nrog cov xov siab precision, ntsia hlau rau hauv lub tsho pw tsaug zog uas tsis muaj zawv zawg hlau, ntsia hlau qhov tob Ntau dua lossis sib npaug li 150mm kom kho lub zog. Embedded spikes yog ua ntej- nrum nyob rau hauv pw tsaug zog, haum rau siab - ceev railway ballastless track sleepers, ruaj khov kho ntau yam tsis muaj kev puas tsuaj, haum rau siab -ces tsav tsheb scenarios. Ntoo sleeper spikes yog taw tes tsim, haum rau ntoo sleepers, xauv rails tom qab tsav tsheb, feem ntau yog siv rau qub Hoobkas lem. Insulating spikes yog nrog lub tes tsho insulating, haum rau siab - ceev railway khiav circuits kom tsis txhob spike conduction ua teeb liab faults, rwb thaiv tsev tsis kam ntau dua los yog sib npaug rau 5 × 10^6Ω.
Dab tsi yog cov khoom siv tseem ceeb thiab cov ntsuas kev ua haujlwm ntawm bolts / spikes?
Cov ntaub ntawv tseem ceeb ntawm cov bolts yog 45 # siab - cov pa roj carbon zoo thiab 40Cr alloy steel, spikes yog 20MnTiB alloy steel, txhua yam yog tshwj xeeb siab - cov ntaub ntawv muaj zog rau lem nrog tensile zoo heev thiab shear tsis kam. 8.8 qib bolt khoom yog 45 # steel nrog tensile zog ntau tshaj 80 MP los yog sib npaug zog. 640MPa, ua tau raws li cov kev xav tau ntawm cov kev xav tau yooj yim ntawm cov khoom siv railway zoo tib yam. 10.9 / 12.9 qib bolt khoom yog 40Cr alloy steel, 10.9 qib tensile Ntau dua lossis sib npaug rau 1040MPa, 12.9 qib tensile Ntau dua lossis sib npaug rau 1220MPa{16. railway/heavy-duty high{18}}lub zog xauv. Spike khoom 20MnTiB alloy steel nrog tensile lub zog Ntau dua los yog sib npaug rau 900MPa, tsis muaj tawg tom qab 15℃txias dabtsi yog khoov, tsis deformation tom qab screwing thiab xauv, hnav tsis kam thiab xeb kuj. Bolt/spike nto kub-dip galvanized los tiv thaiv- xeb nrog txheej Ntau dua lossis sib npaug li 80μm, ntsev tsuag tshuaj tiv thaiv Ntau dua lossis sib npaug li 500 teev, tsis muaj xeb thiab tsis ua haujlwm hauv qhov chaw ntub dej.
Dab tsi yog qhov tseem ceeb torque specifications thiab tiv thaiv -loosing ntsuas rau ntsia liaj qhov rooj / ntsia hlau loj installation thiab xauv?
Bolt locking torque yog nruj me ntsis raws li qib zog, 8.8 qib torque 350-400N·m, 10.9 qib 500-550N·m, 12.9 qib 600{11}}650N ± devim, tsis muaj kev sib npaug, zawv zawg kab. Tsis muaj torque yuav tsum tau rau kev txhim kho spikes, ntsia hlau spikes yog screwed rau hauv lub tes tsho embedded kom nruj, xyuas kom tsis muaj loosening tom qab screwing, ntoo sleeper spikes yog tsav mus txog rau thaum lub taub hau spikes haum lub hauv paus phaj. Cov tub ntxhais tiv thaiv -loosing ntsuas rau bolts yog txhim kho lub caij nplooj ntoos hlav ntxhua khaub ncaws thiab xauv cov txiv ntseej, siab - txoj kev tsheb ciav hlau ceev tau ntxiv nrog cov xov xauv cov kua nplaum, kev lag luam thiab mining bolts ntxiv nrog rau kev tiv thaiv- loosening gaskets rau ntau yam los tiv thaiv xoob thiab tiv thaiv kev vibration loosening. Ib qho me me ntawm cov roj lubricating yog siv rau lub ntsia liaj qhov rooj xov thaum lub sijhawm teeb tsa kom yooj yim xauv thiab tom qab disassembly, zam cov xov corrosion thiab tuav tsis tau. Ua cov cim torque tom qab ntsuas phoo, tshuaj xyuas thiab rov ntsuas lub zog txhua hli, rov ua dua thiab nruj rau lub sijhawm yog tias attenuated los xyuas kom meej lub sijhawm kaw ntev.
Dab tsi yog qhov ua txhaum cai thiab kev saib xyuas kev kho mob ntawm bolts / spikes hauv kev siv?
Feem ntau ua txhaum ntawm bolts / spikes nyob rau hauv kev siv xws li zawv zawg hlau, tawg, xeb, loosening thiab rwb thaiv tsev tsis ua hauj lwm, tag nrho cov yog ib tug loj kev nyab xeeb kev nyab xeeb, yuav tsum tau kev kho mob tam sim ntawd kaw. Bolt zawv zawg hlau yog torque tshaj tus qauv los yog xov hnav, tshem tawm cov zawv zawg hlau bolts thiab hloov nrog cov tshiab ntawm tib lub specification, kho xov qhov, re-xauv raws li tus qauv torque kom tsis txhob zawv zawg hlau dua. Bolt/spike fracture yog overload los yog cov khoom tsis xws luag, hloov nrog cov tshiab thiab xyuas cov kab load tib lub sij hawm, upgrade 12.9 qib bolts rau hnyav -cov dej num thiab txhawb cov ntsiab lus kev ntxhov siab. Xeb yog txheej ntog tawm thiab ya raws, derust thiab re-coat anti- xeb roj, hloov stainless hlau bolts / spikes nyob rau hauv ntug dej hiav txwv seem kom ntev tiv thaiv -corrosion lub neej. Loosening yog torque attenuation los yog anti-loosing tsis ua hauj lwm, retighten mus rau tus qauv torque, upgrade anti{11}}loosing accessories thiab nce zaus tshuaj ntsuam. High-Kev ceev railway bolt rwb thaiv tsev tsis ua haujlwm yog txheej txheej puas tsuaj, hloov cov ntsia hlau insulating, sim rwb thaiv tsev tiv thaiv mus txog tus qauv kom tsis txhob taug kev tsis ua haujlwm.