Yuav Ua Li Cas Khaws Rail Pads: Kev Tshuaj Xyuas, Ntxuav thiab Hloov
Nov 26, 2025
Vim li cas Rail Pad Maintenance Matters
Rail pads zaum nruab nrab ntawm lub tsheb ciav hlau ko taw thiab lub sleeper lossis baseplate. Lawv faib lub log load rau thaj tsam loj dua, cuam tshuam hauv ncoo, kev vibration thiab suab nrov, thiab tiv thaiv cov tsheb ciav hlau los ntawm crushing lossis abrading tus neeg pw tsaug zog. Cov ntaub qhwv los yog tawg tau hloov qhov nruj ntawm lub kaw lus fastening, uas ua rau kom hnav ntawm lwm yam khoom thiab degrades khiav geometry. Kev saib xyuas niaj hnub yog li ntawd tus nqi qis - txoj hauv kev los tiv thaiv tag nrho cov qauv khiav.
Lub Sijhawm Tshawb Fawb thiab Kev Tshawb Fawb
Tshawb xyuas cov tsheb ciav hlau tsawg kawg ob zaug hauv ib xyoos, thiab ntau zaus ntawm cov kab nkhaus, kev tawm mus thiab hnyav - cov kab tsheb thauj mus los lossis hauv ib puag ncig hnyav. Thaum lub sij hawm soj ntsuam xyuas: hnav thiab compression teeb (lub ncoo yuav tsum tsis txhob visibly thinner los yog grooved ntxaum tshaj li tsim); tawg, kua muag thiab deformation; ruaj ntseg thiab raug qhov chaw fastening; thiab muaj kab mob xws li roj, roj lossis khib nyiab. Cov ntaub qhwv uas tau tsiv los yog ploj lawm yuav tsum tau muab rov qab los yog hloov tam sim ntawd vim tias cov ntiv taw fastening yuav txwv tsis pub zaum ncaj qha rau ntawm lub txaj pw.
Ntxuav thiab tu tsev
Khaws thaj chaw nyob ib puag ncig cov ntaub qhwv tsis muaj cov khib nyiab pov tseg, av nkos thiab cov tshuaj spilled. Taug qab tu cov blocks tuaj yeem siv los ntxuav lub tsheb ciav hlau ko taw thiab thaj chaw hauv ncoo thaum tu. Cov kua dej zoo nyob ib puag ncig ntawm txoj kev taug kev txo qis kev ya raws, uas ua rau kev laus ntawm cov roj hmab thiab EVA pads.
Txoj Cai Hloov
Hloov cov ntaub qhwv ntsej uas pom tias hnav, tawg lossis deformation ntau dua li tos kom tsis ua haujlwm. Rau txoj kab tseem ceeb, kev hloov pauv ntawm lub voj voog ntawm kwv yees li 20 mus rau 30 xyoo yog qhov uas cov ntaub qhwv tsis tau hloov ua ntej los ntawm kev khiav tsheb, vim tias cov txheej txheem compression hloov maj mam tuaj yeem ploj mus hauv kev tshuaj xyuas niaj hnub. Thaum hloov cov ntaub qhwv, xyuas tias cov ntaub qhwv tshiab thiab qhov tawv tawv zoo sib xws rau kev tsim cov txheej txheem fastening; kev sib xyaw cov ntaub qhwv hauv ib qho kev sib txuas ua ke hloov qhov nruj ntawm lub rooj zaum rail mus rau lub rooj zaum.
Yuav zam li cas
Tsis txhob siv roj rau roj hmab rail pads: roj degrades cov roj hmab compound thiab shortens nws lub neej. Khaws cov ntaub qhwv kom deb ntawm tshav ntuj ncaj qha thiab qhov chaw tshav kub thaum lub sijhawm khaws cia, thiab tsis txhob sib cuag nrog cov tshuaj reagents xws li cov kuab tshuaj thiab cov kua qaub. Khaws cov ntaub qhwv tiaj tus, tawm hauv av, hauv qhov chaw txias qhuav nrog lub ntim kom txog thaum kev teeb tsa.
Hom Rail Pad Parameters
| Parameter | Roj hmab ncoo | HDPE hnab | EVA pad |
|---|---|---|---|
| Qhov ceev (g / cm³) | – | 0.95–0.98 | 0.95–0.98 |
| Tensile zog (MPa) | Ntau dua lossis sib npaug rau 12.5 (ua ntej kev laus) | Ntau dua lossis sib npaug li 19 | Ntau dua lossis sib npaug li 15 |
| Elongation (%) | Ntau dua lossis sib npaug rau 250 (ua ntej kev laus) | >80 | >500 |
| Hardness | 72–80 Ib | Ntau dua lossis sib npaug rau 98 (Shore A / D ntau) | Ntau dua lossis sib npaug rau 90 (Shore A / D ntau) |
| Static ruaj khov (kN / mm) | 90–130 | – | – |
| Hluav taws xob tsis kam (Ω) | Ntau dua lossis sib npaug li 10⁶ | Ntau dua lossis sib npaug rau 1 × 10¹⁰ | Ntau dua lossis sib npaug rau 1 × 10¹⁰ |
FAQ
1. Ntev npaum li cas cov tsheb ciav hlau yuav tsum tau kuaj xyuas?
Tsawg kawg yog ob zaug hauv ib xyoos, thiab ntau zaus ntawm kev nkhaus, kev tawm mus, hnyav- cov kab thiab hauv huab cua hnyav.
2. Dab tsi yog cov cim qhia tias lub tsheb ciav hlau yuav tsum tau hloov?
Pom pom cov kab nrib pleb, kua muag, deformation, compression set, paug nrog roj, los yog ib lub ncoo uas ploj lawm los yog hloov chaw nyob rau hauv lub tsheb ciav hlau ko taw.
3. Cov roj puas tuaj yeem ua rau cov tsheb ciav hlau puas?
Yog lawm. Roj thiab cov khoom siv roj av feem ntau degrade cov roj hmab sib txuas thiab ua rau lub neej luv. Cov khoom nchuav yuav tsum tau muab ntxuav kom huv thiab hloov cov pawm tsis huv.
4. Ntev npaum li cas rail pads kav ntev?
Kev pabcuam lub neej nyob ntawm kev khiav tsheb thiab ib puag ncig; ntawm ntau lub hauv paus pads raug hloov ntawm 20 mus rau 30 xyoo lub voj voog lossis ua ntej thaum kuaj pom tias hnav.
5. Dab tsi yog qhov nruj ntawm cov roj hmab rail ncoo?
Static rigidity ntawm 90 mus rau 130 kN / mm yog ib qho tseem ceeb rau mainline roj hmab ncoo; softer lossis stiffer pads raug xaiv rau cov txheej txheem fastening.
6. Vim li cas thiaj yuav tsum hloov cov ntaub qhwv kom haum rau hom qub?
Pad txhav thiab thickness teem lub rooj zaum rail stiffness. Kev sib xyaw cov ntaub qhwv hauv ib kab ua rau qhov tsis sib xws, uas ua rau kom muaj zog thiab ua kom lub cev hnyav ntxiv.
