1. Dab tsi yog lub neej ntev ntawm kev tsheb ciav hlau bolts, txiv ntseej, thiab ntxhua khaub ncaws?
Lub neej ntev ntawm kev tsheb ciav hlau fasteners nyob ntawm cov khoom siv, ib puag ncig, thiab kev saib xyuas. Hauv ib puag ncig me me (piv txwv li, cov chaw nyob deb nroog qhuav), galvanized carbon steel bolts thiab txiv ntoo tuaj yeem kav 8-12 xyoo. Nyob rau hauv ib puag ncig hnyav (cov cheeb tsam ntug dej hiav txwv, thaj chaw muaj kev lag luam), stainless hlau lossis epoxy-coated bolts dhau 15-20 xyoo, thaum uncoated carbon steel bolts yuav xav tau hloov tom qab 5-7 xyoo. Cov tshuab ntxhua khaub ncaws muaj lub neej zoo sib xws rau bolts, txawm tias lawv tuaj yeem hnav sai dua yog tias raug kev co ntau dhau. Kev saib xyuas tsis tu ncua (ntxuav, rov ua kom nruj, hloov cov khoom puas) tuaj yeem ua rau lub neej ntev li 2-3 xyoos. High-strength alloy steel fasteners kuj tseem siv tau ntev dua li cov pa roj carbon steel, vim lawv tiv taus hnav thiab deformation zoo dua. Thaum kawg, lifespan yog txiav txim los ntawm qhov zoo ntawm cov fasteners tiv thaiv corrosion thiab kev ntxhov siab.
2. Cov railway bolts tuaj yeem siv nrog ob qho tib si ntoo thiab pob zeb pw?
Yog lawm, railway bolts tuaj yeem siv nrog ob qho tib si ntoo thiab pob zeb, tab sis hom ntsia liaj qhov rooj thiab txoj kev teeb tsa sib txawv. Rau cov ntoo pw tsaug zog, luv luv, threaded bolts (feem ntau nrog cov ntsiab lus ntse) yog siv -lawv raug ntsia ncaj qha rau hauv pre-drilled qhov nyob rau hauv ntoo, thiab ib tug txiv ntseej yog nruj nreem rau saum lub rail. Rau cov pob zeb pw, ntev bolts nrog cov xov tuab yog xav tau, vim cov pob zeb nyuaj dua thiab yuav tsum muaj kev ruaj ntseg dua; cov bolts no feem ntau yog ua ke nrog cov yas ntxig (los tiv thaiv cov pob zeb) thiab nruj nrog lub zog siab dua. Tsis tas li ntawd, cov ntxhua khaub ncaws rau cov ntoo pw tsaug zog feem ntau yog tuab dua los tiv thaiv cov txiv ntoo los ntawm kev nkag mus rau hauv cov ntoo, thaum cov pob zeb ua rau lub txaj pw yog nyias tab sis nruj dua. Qhov tseem ceeb yog txuam nrog lub ntsia liaj qhov rooj qhov ntev, xov tsim, thiab cov khoom siv rau cov pw tsaug zog hardness thiab tuav xav tau.
3. Dab tsi yog qhov txawv ntawm ib qho - txiv ntseej thiab ob - txiv ntseej tshuab rau kev tsheb ciav hlau bolts?
A single-nut system uses one nut (either standard or lock nut) to secure the railway bolt-it is simple, fast to install, and low-cost, making it ideal for low-vibration track sections. Txawm li cas los xij, tib lub txiv ntoo (txawm tias cov txiv ntoo xauv) tuaj yeem xoob lub sijhawm nyob rau hauv siab - qhov chaw muaj kev ntxhov siab. Ib ob - txiv ntseej system siv ob lub txiv ntoo: lub txiv ntoo tseem ceeb nruj rau lub zog uas tau teev tseg, thiab cov txiv ntoo thib ob (xauv) nruj rau thawj qhov. Cov txiv ntoo thib ob tsim kev sib txhuam ntawm ob lub txiv ntoo, tiv thaiv cov txiv ntoo tseem ceeb ntawm kev tig thiab loosening. Muab ob npaug rau- txiv ntseej tshuab yog siv nyob rau hauv siab- thaj chaw kev co xws li cov pob qij txha, cov kab nkhaus, lossis cov kab hnyav- cov kab, qhov twg tib lub txiv ntseej yuav ua tsis tiav. Thaum lawv siv sijhawm ntev dua los txhim kho thiab raug nqi ntau dua, ob npaug - txiv ntseej tshuab muab kev nyab xeeb ntxiv thiab txo kev saib xyuas.
4. Yuav ua li cas railway bolts tiv thaiv shear rog los ntawm lub tsheb ciav hlau txav?
Railway bolts tiv thaiv shear rog (cov quab yuam uas sim xaub lub bolt sib nrug) los ntawm lawv cov khoom siv zog thiab tsim. Siab -lub zog alloy steel bolts raug xaiv rau lawv lub zog shear siab-lawv tuaj yeem tiv taus lub zog sab nraud thiab ntsug ntawm lub tsheb ciav hlau tsis muaj kev tawg. Lub bolt txoj kab uas hla kuj tseem ua lub luag haujlwm: cov bolts tuab dua (piv txwv li, 24mm vs . 20mm) muaj kev cuam tshuam ntau dua thiab siv rau hauv qhov siab -load. Tsis tas li ntawd, bolts tau nruab nrog nruj haum rau hauv lub qhov ntawm cov ntsia hlau thiab cov neeg pw tsaug zog- qhov no txo qis kev txav ntawm cov khoom, txo cov shear quab yuam ntawm lub ntsia liaj qhov rooj. Cov tshuab ntxhua khaub ncaws kuj pab tau los ntawm kev faib cov quab yuam hla lub taub hau ntawm lub taub hau thiab cov txiv ntoo, tiv thaiv cov ntsia liaj qhov rooj los ntawm kev rub los ntawm cov khoom siv. Ua ke, cov yam ntxwv no ua kom cov bolts tuav lub zog shear kom nyab xeeb.
5. Vim li cas qee qhov railway washers serrated, thiab lawv ua haujlwm li cas?
Qee qhov kev tsheb ciav hlau ntxhua khaub ncaws yog serrated (muaj cov hniav me me, ntse ntawm ib sab) txhawm rau txhim kho lawv txoj kev tiv thaiv -loosing peev xwm. Sab serrated yog nias rau saum npoo ntawm txoj kev tsheb ciav hlau lossis pw tsaug zog thaum lub sijhawm teeb tsa; cov hniav khawb rau hauv cov khoom siv (tshwj xeeb tshaj yog zoo ntawm cov ntoo lossis cov hlau mos), tsim kom muaj lub tshuab xauv uas tiv thaiv lub tshuab ntxhua khaub ncaws (thiab yog li cov txiv ntoo) los ntawm kev sib hloov vim kev co. Tsis zoo li cov tshuab ntxhua khaub ncaws, uas tso siab rau kev sib txhuam ib leeg, serrated washers siv lub cev tuav kom nyob hauv qhov chaw. Lawv feem ntau siv nrog cov txheej txheem hex ceev hauv nruab nrab - thaj chaw vibration, qhov twg cov txiv ntoo xauv yuav tsis tsim nyog tab sis xav tau kev nyab xeeb ntxiv. Serrated washers tsis yog siv rau cov pob zeb pw tsaug zog (vim cov hniav tuaj yeem ua rau cov pob zeb ua kom puas), tab sis lawv ua haujlwm zoo ntawm cov ntoo pw lossis hlau ntses.