Dab tsi Elastic Rail Pad Ua
Lub rail ncoo yog txheej elastic ntawm lub tsheb ciav hlau ko taw thiab lub sleeper (los yog baseplate). Nws ua plaub lub luag haujlwm ib zaug: nws khaws cov elastic deformation uas cia lub kaw lus fastening tuav lub tsheb ciav hlau ruaj khov yam tsis muaj clamping, nws damps lub log -rail cuam tshuam uas yuav txwv tsis pub cov neeg pw tsaug zog thiab ballast, nws kis tau cov tsheb ciav hlau siab tshaj qhov chaw pw tsaug zog, thiab nws muab cov hluav taws xob rwb thaiv tsev uas ua kom taug qab -. Vim hais tias lub ncoo yog compressed los ntawm txhua lub log dhau, nws cov khoom txiav txim siab ob qho tib si nruj ntawm lub fastening system thiab lub sij hawm txij nkawm ntawm cov ntaub qhwv yuav tsum tau hloov.
Hnav-Cov ntaub ntawv tsis sib xws
Tsis muaj ib yam khoom yeej hauv txhua lub luag haujlwm. Rau kev cuam tshuam - thiab puas tsuaj - txoj kev khiav, polyurethane (PU / TPU) yog kev siv coj los siv- kev xaiv resistant, feem ntau outlasting roj hmab ncoo los ntawm peb mus rau tsib zaug nyob rau hauv rov qab siab -strain loading thaum khaws zoo elasticity. Rau qhov hnyav, qeeb thauj khoom uas qhov tseem ceeb yog qhov ruaj khov, qhov ntev ruaj khov uas tiv thaiv kev nkag mus tsis tu ncua, siab - ntom polyethylene (HDPE) yog qhov nyiam. Rau oily lossis chemically aggressive industrial sidings, nitrile roj hmab (NBR) muab cov roj zoo tshaj plaws thiab kev laus tiv taus. EPDM thiab formulated natural/synthetic rubber compounds tseem yog qhov kev xaiv sib npaug rau kev sib xyaw ua ke, nrog rau siab -cov qauv ntom ntom txhim kho lub neej kev pabcuam ntawm tus nqi nruab nrab.
| Khoom | TPU (polyurethane) | EPDM / TPV | NBR | HDPE |
|---|---|---|---|---|
| Hnav tsis kam | Zoo heev (3-5x roj hmab) | Zoo | Zoo | Zoo hauv qab zawv zawg, nruj |
| Elasticity / damping | Zoo heev | Zoo | Nruab nrab | Tsawg |
| Roj kuj | Zoo | Nruab nrab | Zoo heev | Zoo heev |
| Kev pab kub ntau yam | -30 rau 120 degree | -60 txog 135℃(TPV) | -30 rau 110 degree | -20 mus rau 80℃(zoo) |
| Tej daim ntawv thov | Siab- nrawm thiab hnyav- cuam tshuam kev khiav | Kev sib xyaw ua ke, huab cua raug | Oily industrial railways | Hnyav, qis -freight ceev |
Daim Ntawv Pov Thawj ntawm Cov Khoom Siv Khoom Siv
Rubber rail pads rau cov pob zeb pw tsaug zog yog ib txwm tsim nyog tiv thaiv TB / T 2626, thiab cov txiaj ntsig tsim nyog siv hauv kev sib tw yog: static stiffness 90-130 kN/mm, Shore A hardness 72-80, hluav taws xob tsis kam ntawm lossis siab dua 10^6 ohms rau kev khiav-circuit 1. MPa, thiab elongation ua ntej kev laus ntawm tsawg kawg yog 250%. HDPE pads, siv qhov siab tawv xav tau, yog muab rau cov tsis xws li: ceev 0.95-0.98 g / cm3, tensile zog 19 MPa los yog ntau tshaj, elongation saum 80%, melting point nyob rau hauv 170-190℃ntau yam, rwb thaiv tsev tsis kam siab tshaj 1 x 10 ^ 10 ohms, thiab siab dua 10 ^ 10 ohms. Nco ntsoov txheeb xyuas qhov tseem ceeb ntawm qhov project specification thiab daim duab ncoo, vim tias qib nominal ib leeg tsis kho qhov nruj.
Kev xaiv cov khoom siv los ntawm kev thov
Siab- cov kab neeg caij tsheb ceev: qis- mus rau - nruab nrab nruj TPU lossis EPDM pads; qhov qis qis muab lub caij nplooj ntoos hlav clip ua haujlwm loj dua thiab ua kom lub ncoo nyob rau hauv tag nrho kev sib cuag nrog lub tsheb ciav hlau ko taw, uas txo cov suab nrov thiab ncua lub neej clip.
Hnyav-haul freight: HDPE lossis siab -cov roj hmab ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom; Qhov tseem ceeb yog tiv thaiv creep thiab extrusion ntau dua li qhov siab tshaj plaws elasticity.
Industrial thiab chaw nres nkoj railways: NBR pads qhov twg diesel, hydraulic roj thiab cov kuab tshuaj muaj nyob; roj o yuav rhuav tshem lub ntuj roj hmab hauv lub hlis.
Rwb thaiv tsev (khiav-circuit) ntu: txheeb xyuas hluav taws xob tiv thaiv ntawm lub ncoo (10^6 ohms lossis siab dua rau cov ntaub qhwv roj hmab; 10^10 rau HDPE) kom cov tsheb ciav hlau tseem nyob hauv hluav taws xob los ntawm cov neeg pw tsaug zog.
Cov cheeb tsam txias: xyuas qhov qis- tus cwj pwm kub ntawm cov polymer; Qee cov thermoplastics nruj heev hauv qab -20 degree, uas hloov fastening stiffness precisely thaum rail contraction loj tshaj plaws.
Kev Ntseeg Tsis Zoo
Ua ntej, qhov nyuaj tshaj plaws tsis yog qhov zoo tshaj plaws: hnav tsis kam thiab hardness yog cov khoom sib txawv, thiab lub ncoo uas nyuaj dhau los cuam tshuam lub zog rau hauv pw tsaug zog thiab ballast, ua rau tawg thiab kev sib haum xeeb. Qhov thib ob, PU tsis yog ib txwm yog cov lus teb yog: ntawm hnyav, qeeb thauj khoom nrog siab zoo li qub, cov ntaub qhwv HDPE nruj dua feem ntau outlass polyurethane ncoo. Thib peb, lub ncoo tuab tsis sib npaug zoo dua damping: nruj yog teem los ntawm lub ncoo compound thiab geometry ua ke, thiab hloov cov ntaub qhwv thickness yam tsis rov xam cov fastening system hloov clip ntiv taw load. Plaub, cov roj hmab thiab HDPE cov ntaub qhwv tsis tuaj yeem hloov pauv tau hauv lub kaw lus nrawm: hluav taws xob tsis kam, qhov tawv thiab qhov ntev ntawm qhov sib txawv txhua qhov sib txawv, thiab cov ntaub qhwv yuav tsum phim cov duab hauv qab.
FAQ
Cov khoom siv rail pad twg ntev tshaj plaws nyob rau hauv kev cuam tshuam?
Polyurethane (PU/TPU) feem ntau muab peb mus rau tsib npaug ntawm kev puas tsuaj lub neej ntawm roj hmab hauv kev cuam tshuam -kev khiav, ua rau nws siv rau siab - nrawm thiab hnyav- ntu cuam tshuam.
Thaum twg yog HDPE lub tsheb ciav hlau zoo dua li roj hmab?
Rau hnyav, qis-ceev freight qhov twg rigidity thiab load kuj tseem ceeb tshaj elasticity: HDPE resists creep thiab extrusion nyob rau hauv tas li siab qag load, tab sis nws yog deb tsawg elastic dua roj hmab.
Vim li cas qhov hluav taws xob tiv thaiv tau teev tseg rau ntawm cov ntaub thaiv tsheb ciav hlau?
Lub ncoo insulates txoj kev tsheb ciav hlau los ntawm tus neeg pw tsaug zog yog li taug qab -circuit signals tsis luv; roj hmab pads feem ntau tsim nyog ntawm 10 ^ 6 ohms los yog siab dua thiab HDPE saum 10 ^ 10 ohms.
Dab tsi yog qhov nyuaj ntawm cov roj hmab rail ncoo?
Ntug A 72-80 rau cov qauv roj hmab pads, nrog zoo li qub nruj hauv 90-130 kN / mm band thaum tsim nyog rau txoj kev tsheb ciav hlau pad technical mob rau pob zeb taug kev.
Puas yog ib qho tawv tawv ib txwm tiv taus hnav zoo dua?
Tsis yog. Hnav tsis kam thiab hardness yog cov khoom sib txawv; ib qho tawv tawv heev hloov pauv cuam tshuam rau kev pw tsaug zog thiab ballast, ua rau tawg thiab taug qab kev sib haum xeeb.
Yuav ua li cas yog tias cov khoom siv ntaub qhwv hloov pauv yam tsis tau hloov kho lub fastening?
Kev nruj, ntiv taw load thiab hluav taws xob rwb thaiv tsev tag nrho hloov nrog cov khoom siv, yog li cov txheej txheem fastening yuav tsum tau rov qab- txheeb xyuas (piv txwv li EN 13481 kev ua tau zoo) ua ntej hloov.