1. CWR's "qhov kub thiab txias" yog dab tsi thiab vim li cas nws tseem ceeb?
Qhov nruab nrab kub yog thaum CWR muaj kev ntxhov siab -dawb- tsis muaj qhov nro (txias) lossis compression (tshav kub). Nws yog ib qho tseem ceeb vim tias CWR tsis muaj cov pob qij txha nthuav dav: qhov kub thiab txias ua rau kev sib cog lus / nro (kawg); siab dhau ua rau expansion/compression (buckling). Qhov nruab nrab kub yog teem los ntawm kev nyab xeeb: 25-30℃(temperate), 30-35℃(kub), 15-20℃(txias). Cov neeg ua haujlwm siv cov ntsuas kub ntsuas thaum lub sijhawm teeb tsa los xyuas kom raug, tiv thaiv kev ua tsis tiav.
2. Dab tsi yog rail hnav, thiab qhov twg hnav tshaj?
Rail hnav yog cov khoom poob los ntawm lub log sib cuag / kev sib txhuam. Covrail taub hauhnav feem ntau, raws li nws yog thawj lub log sib cuag taw tes. Cov khoom siv tseem ceeb: 1.Khiav nto: Flattened los ntawm qhov dov tsis tu ncua (siab- kab tsheb khiav). 2.Ntsuas kaum: Hnav los ntawm lub log flanges (khov lem). 3.Teb sab: Hnav ntawm nruj nkhaus. Web / puag hnav yog tsawg (tsuas yog los ntawm cov neeg pw tsaug zog). Thaum lub taub hau hnav ntau dua 3-5mm (qauv- nyob ntawm), cov tsheb ciav hlau raug hloov lossis hauv av.
3. Rail corrugation yog dab tsi, thiab nws cuam tshuam rau kev ua haujlwm li cas?
Corrugation yog yoj-zoo li ridges (10–100mm wavelength) ntawm lub taub hau tsheb ciav hlau, tshwm sim los ntawm lub log-rail resonance. Nws ua kom nrov nrov (txog 10dB), ua kom cov tsheb ciav hlau / lub log hnav (2-3x sai dua), thiab ua rau cov khoom puas (xws li pw tsaug zog, tawg bolts). Feem ntau ntawm nkhaus / nroog rails. Tsau los ntawm kev sib tsoo tshuab kom du lub taub hau; tiv thaiv kev sib tsoo (6-12 lub hlis) txo kev tsim.
4. Dab tsi yog qhov txawv ntawm "cov tsheb ciav hlau tshiab" thiab "relayed rails"?
Cov tsheb ciav hlau tshiab yog lub Hoobkas-tshiab (piv txwv li, UIC 60) tsis muaj hnav, siv rau kev tsim kho tshiab / hloov lub ntsiab. Relayed rails yog siv rails tshuaj xyuas, hauv av, thiab refurbished rau rov siv dua. Relayed rails ua haujlwm qis- ntu kev tsheb (kab ceg, chaw ua haujlwm) qhov kev xav tau qis. Lawv yog 50–70% pheej yig dua li tshiab tab sis muaj luv luv lifespan-tsis tau siv rau siab -ceev/hnyav- cov kab.
5. Dab tsi yog kev tsheb ciav hlau qaug zog, thiab dab tsi ua rau nws hauv UIC 60?
Rail qaug zog yog qhov tawg me me los ntawm kev ntxhov siab dua (txawm tias qis dua lub zog tensile). Hauv UIC 60, ua rau muaj xws li: 1.Cyclic loading: Tsheb ciav hlau hla tsis muaj zog hauv cov qauv (tshwj xeeb ntawm qhov tsis xws luag). 2.Thermal stress: CWR expansion/contraction ntxiv kev ntxhov siab. 3.Hnav / corrugation: Txo lub taub hau tuab ua rau muaj kev ntxhov siab ntau ntxiv. Cracks loj hlob nyob rau lub sij hawm, muaj kev pheej hmoo ntawm txoj kev tsheb ciav hlau tawg. Ultrasonic kuaj (3-6 lub hlis) pom cov kab nrib pleb thaum ntxov.