1. Yuav ua li cas railway bolts tiv taus seismic kev ua ub no nyob rau hauv av qeeg- cov cheeb tsam uas nquag?
Hauv av qeeg- cov cheeb tsam uas yooj yim, cov bolts taug qab yog tsim los tiv thaiv tam sim ntawd, khaus vibrations thiab lateral hloov. High-tensile steel (10.9 qib lossis siab dua) siv cov ductility zoo, tso cai rau cov bolts hloov me ntsis yam tsis muaj kev tawg thaum muaj xwm txheej seismic. Tshwj xeeb xauv cov txiv ntseej nrog txhim kho lub zog tuav kom tsis txhob xoob los ntawm kev sib tsoo hnyav, thaum lub bolts ntev dua muab lub zog clamping ntau dua kom cov hlua khi rau cov neeg pw tsaug zog. Qee cov qauv tsim muaj xws li hloov tau yooj yim ntxhua khaub ncaws los yog bushings uas nqus seismic zog, txo kev ntxhov siab ntawm lub bolt nws tus kheej. Taug qab layouts nyob rau hauv cov cheeb tsam no feem ntau siv bolts ntxiv rau ib qho kev tsheb ciav hlau los faib cov seismic rog, thiab tsis tu ncua post- av qeeg soj ntsuam xyuas lub bolt deformation, loosening, los yog tawg-txawm tias me me puas yuav tsum tau hloov tam sim ntawd kom muaj kev ruaj ntseg khiav.
2. Tus nqi npaum li cas rau kev tsheb ciav hlau bolts, thiab dab tsi cuam tshuam rau tus nqi?
Railway khiav bolts feem ntau nyob rau hauv tus nqi ntawm 5 mus rau 50 rau ib lub bolt, nyob ntawm seb qhov loj, cov khoom, thiab txheej. Cov bolts me me (piv txwv li, M16) rau lub teeb tsheb ciav hlau yog nyob rau hauv qis kawg, thaum loj, siab - lub zog bolts (xws li, M30) rau cov kab xa khoom tuaj yeem raug nqi 30 lossis ntau dua. High-gradealloysteelboltsarepricierthancarbonsteelones, thiab tshwj xeeb coatings (piv txwv li, kub-dipgalvanizationorant-corrosiontreatments) ntxiv 20-50
100 ib unit. Lwm yam tseem ceeb suav nrog kev tsim khoom ntim (kev txiav txim ntau txo ib-cov nqi tsev) thiab kev lag luam xav tau cov khoom siv raw xws li steel, uas hloov pauv nrog cov saw hlau thoob ntiaj teb.
3. Yuav ua li cas railway bolts cuam tshuam nrog pob zeb vs. ntoo pw?
Bolts siv nrog cov pob zeb pw tsaug zog yuav tsum muaj zog, nruj dua tsim kom nkag mus rau cov khoom siv ntom ntom, feem ntau muaj cov ntse ntse, tus kheej -tapping threads los tuav lub pob zeb zoo. Cov tshuab ntxhua khaub ncaws loj dua los faib cov siab thiab tiv thaiv kev tawg ntawm cov pob zeb. Nyob rau hauv sib piv, bolts rau ntoo sleepers tej zaum yuav muaj coarser threads uas tom rau hauv ntoo, tsim kom muaj zog tuav yam tsis muaj kev sib cais ntawm cov ntoo. Lawv feem ntau siv softer washers kom tsis txhob indentation rau hauv cov ntoo, thiab cov bolts lawv tus kheej yuav ntev me ntsis rau tus account rau ntoo txoj kev nyiam mus shrink los yog nthuav nrog noo noo. Qhob sleeper bolts muaj feem xyuam rau corrosion los ntawm cov pob zeb alkaline xwm, yog li lawv yuav tsum tau coatings zoo dua, thaum ntoo sleeper bolts ntsib kev pheej hmoo ntawm lwj, ua compatibility nrog ntoo preservatives tseem ceeb.
4. Dab tsi yog qhov yuam kev uas yuav tsum zam thaum lub sij hawm railway bolt cia?
Kev khaws cov bolts tsis raug tuaj yeem cuam tshuam lawv kev ua haujlwm. Feem ntau ua yuam kev suav nrog kev khaws cov bolts hauv qhov chaw ntub dej, uas ua rau xeb - lawv yuav tsum khaws cia rau hauv qhov chaw qhuav, qhov cua nkag ntawm pallets lossis racks, kom deb ntawm cov av noo hauv av. Kev sib xyaw ntawm cov ntsia liaj qhov rooj sib txawv (xws li, ntses phaj vs. bolts sleeper bolts) tuaj yeem ua rau kev teeb tsa tsis raug, yog li cov ntawv sau meej meej thiab cais cia yog qhov tseem ceeb. Kev nthuav tawm coated bolts rau cov khoom ntse lossis cov khoom hnyav tuaj yeem ua rau lawv cov txheej txheem tiv thaiv, ua rau lawv muaj kev tiv thaiv corrosion. Kev khaws cov bolts ze rau cov tshuaj (xws li, chiv los yog de{10}}icing ntsev) tuaj yeem ua rau muaj tshuaj lom neeg uas ua rau cov khoom puas. Tsis tas li ntawd, lub sijhawm ntev - khaws cia yam tsis muaj kev tshuaj xyuas ib ntus tuaj yeem nco cov cim ntxov ntawm xeb lossis txheej txheej tsis ua haujlwm, ua rau kev siv cov ntsia hlau tsis zoo hauv kev teeb tsa.
5. Ntev npaum li cas ntawm txoj kev tsheb ciav hlau bolts cuam tshuam rau lawv txoj haujlwm?
Bolt ntev yog ib qho tseem ceeb los xyuas kom meej clamping ntawm cov ntsia hlau thiab cov neeg pw tsaug zog. Bolts yuav tsum ntev txaus kom ncav cuag lub hauv paus kev tsheb nqaj hlau, pw tsaug zog, thiab ntxhua khaub ncaws, nrog cov xov ntev txaus kom ruaj ntseg rau cov txiv ntoo (feem ntau yog 1-1.5 npaug ntawm txoj kab uas hla dhau ntawm cov txiv ntoo). Cov bolts luv dhau yuav tsis muab cov xov txaus sib koom ua ke, ua rau muaj kev pheej hmoo ntawm cov txiv ntoo detachment hauv kev ntxhov siab. Cov bolts ntev ntev tuaj yeem tawm dhau ntawm cov txiv ntoo, tsim kom muaj kev phom sij (xws li, ntes cov khib nyiab) thiab ua rau muaj kev pheej hmoo ntawm kev khoov lossis kev puas tsuaj. Ntev kuj txawv los ntawm cov khoom siv pw tsaug zog: cov pob zeb ua haujlwm xav tau cov bolts ntev dua kom nkag mus rau lawv cov tuab, thaum cov ntoo tsaug zog siv cov bolts luv kom tsis txhob sib cais. Qhov ntev tsis raug tuaj yeem ua rau qhov tsis sib xws ntawm kev ntxhov siab, txo cov ntsia hlau lifespan thiab taug qab kev ruaj ntseg.