Railroad sleepers yog Ameslikas tsim los ntawm cov ntoo, cov ntoo pw tsaug zog muaj cov yam ntxwv xws li elasticity, lub teeb yuag, yooj yim hauv kev ua, zoo rwb thaiv tsev, fasteners yooj yim txuas rau cov ntoo pw tsaug zog, thiab nws yooj yim rau nteg, tu thiab thauj. Dab tsi ntxiv, muaj ntau dua coefficient ntawm kev sib txhuam ntawm cov ntoo sleepers thiab ballast.
Qhov tsis zoo ntawm kev tsheb ciav hlau pw tsaug zog yog tias lub neej muaj txiaj ntsig yog luv, kev siv ntoo yog loj. Txhawm rau kom ntev lub neej kev pabcuam, cov neeg pw tsaug zog feem ntau yuav tsum tau siv tom qab sau cov tshuaj tiv thaiv corrosion. Vim tias lub neej luv luv ntawm cov ntoo pw tsaug zog, nws tau maj mam hloov los ntawm cov pob zeb pw tsaug zog ntawm lub cev loj hauv Suav teb.
Tam sim no, pre-stressed pob zeb yog dav siv, tshwj xeeb tshaj yog nyob rau hauv cov teb chaws Europe thiab Asia. Steel pw tsaug zog yog ib qho ntawm cov kab thib ob hauv UK; yas composite sleepers kuj ua hauj lwm, txawm tias deb tsawg tshaj li ntoo los yog pob zeb. Raws li lub Ib Hlis Ntuj xyoo 2008, kwv yees li ntawm kev ua lag luam nyob rau hauv North America rau cov tsoos thiab ntoo sleepers yog 91.5%, qhov seem yog pob zeb, hlau, liab hlau thiab yas sib xyaw. Muaj ntau yam ntoo railway sleepers, Hardwood Sleepers, Oak Sleepers
Dab tsi yog ntoo railway sleepers ua los ntawm? Wb tham txog nws. Cov ntoo haum rau txoj kev tsheb ciav hlau pw tsaug zog muaj xws li hauv qab no:
1. Cov seem seem thiab cov kev sib tw khiav: Elm, birch, Oak, jarrah, karri, sal, mora, maple, azobé, poplar, larch, ntoo thuv, Yunnan ntoo thuv (ib hom Suav ntoo thuv), spruce, fir, hemlock thiab Lwm hom ntoo dav dav (poplar tsis yog siv los ua cov neeg pw tsaug zog).
2. Choj khiav seem: Huashan ntoo thuv (ib hom Suav ntoo thuv), larch, Yunnan ntoo thuv (ib hom Suav ntoo thuv), spruce, fir, hemlock, koraiensis, thiab lwm yam.
Ntau hom softwood thiab hardwood yog siv los ua cov pw tsaug zog. Oak, jarrah thiab karri yog cov ntoo tawv tawv, uas yog qhov nyuaj kom tau txais, tshwj xeeb tshaj yog los ntawm cov chaw ruaj khov. Cov ntoo mos xws li Douglas fir muaj qhov zoo ntawm kev lees txais kev kho mob yooj yim dua, lawv pheej yig dua, sib dua, kho tau yooj yim dua thiab yooj yim dua.
Cim npe nrov: Tuam Tshoj ntoo railway sleeper manufacturers, lwm tus neeg, Hoobkas
