Lub nruas nres yog ib txoj hlua tseem ceeb uas yog tag nrho cov txheej txheem nres thaum lub tshuab nres. Feem ntau, tus nres tsuas yog ib qho me me rau hauv lub cuab yeej, tab sis vim nws tseem ceeb heev, nws tuaj yeem hais tau hais txog kev ruaj ntseg ntawm kev tsim kho thiab kev ruaj ntseg ntawm cov neeg ua haujlwm, yuav tsum tau ua tiag tiag. Li ntawd, txhua hnub ua haujlwm ntawm txhua tus neeg ua haujlwm yuav tsum raug kuaj xyuas, thiaj li nres tau qhov qub. Tab sis lub nres siv ntev heev, nws yuav tsis muaj ntau yam teeb meem, xws li: nres tsheb nres, nres nres los nres cov ntim pa, ua haujlwm thaum lub ntsuas pa taws ntau dua. Cov no yuav ua rau tus nres nres khiav kom raug thiab txawm tias cuam tshuam rau kev ruaj ntseg ntawm txoj haujlwm, yog li lub nres nres yuav tsum mloog cov teebmeem no, thaum cov xwm txheej nram qab no yuav tsum tau ua thaum khoo.
(1) tawg;
(2) lub nruas brakes siv los yog lub nplais kev sib txhuam los ntawm txoj hlua khi ntawm 50% ntawm cov thawj tuab ntawm qhov tseem ceeb;
(3) caij nplooj ntoos hlav yas deformation;
(4) pob khawm me me lossis qhov taub qhov sib npaug ntawm thawj lub taub 5%;
(5) lub log log yog tshwm sim thaum muaj ib qho teeb meem hauv qab no yuav tsum tau muab pov tseg: ① crack; ② lifting, luffing mechanism ntawm lub log log, npuas tuab ntawm thawj thickness ntawm 40%; ③ lwm lub tsev nres log, tuab ntawm lub log thickness ntawm thawj thickness ntawm 50%; ④ tread roughness ntawm 1.5mm, yog kho, tom qab kho ntawm lub log thickness yuav tsum muaj raws nraim li cov kev cai ntawm Tshooj lus no ②, ③ kev xav tau.
