Tus nuv ntawm cov hluav taws xob ho hluavtaws yog cov tseem ceeb ntawm kev siv hluav taws xob Hoist, thiab yog siv hluav taws xob, nqa khoom thiab thauj khoom. Nws feem ntau yog forged los yog dov los ntawm high-zog alloy steel, thiab muaj lub zog tensile zoo heev thiab hnav tsis kam. Cov qauv nuv muaj xws li lub cev nuv, cov kabmob nuv, lossis cov khoom siv xauv (xws li cov khoom siv xauv ruaj khov) thiab tsis txhob tso tawm thaum lub sijhawm nqa txheej txheem. Ua raws li kev txhawb nqa lub peev xwm, tus nuv tuaj yeem muab faib ua ib tus nuv thiab ob tus lej sib tw, uas haum rau kev sib txawv tonnage ua haujlwm yuav tsum tau ua.
Tus nuv ntawm lub tshuab hluav taws xob xav tau raws li cov qauv kev lag luam lossis kev lag luam kev nyab xeeb (xws li GB / t 10051 "Lifting nuv"). Ua ntej siv, tshuaj xyuas seb tus nuv tau tawg, deformation, hnav lossis xeb, thiab ua tsis muaj qhov tsis pom zoo. Txhua hnub tu suav nrog lubricating cov kabmob caj dab caj dab caj dab, tshawb xyuas seb puas siv cov cuab yeej tsis zoo, thiab tsis txhob overloading. Yog hais tias tus nuv qhib yog deformed los ntawm ntau dua 10% ntawm thawj qhov loj lossis torsional deformation ntau dua 5%, nws yuav tsum tau hloov tam sim ntawd kom ntseeg tau kev nyab xeeb tam sim ntawd.
Hluav taws xob hoist jook tau siv dav siv rau cov khoom nqa hauv cov khoom siv, cov chaw khaws khoom, chaw tsim khoom thiab lwm yam. Thaum xaiv cov qauv, koj yuav tsum xav txog qhov muaj peev xwm ua haujlwm (xws li M3-M5) thiab siv cov kev cai corrosion (xws li cov ntaub ntawv pov thawj, thiab lwm yam) Hotr. Rau kev ua haujlwm nquag lossis kev thauj khoom hnyav, nws raug nquahu kom siv ob chav ua si lossis siv cov khoom siv dag zog los txhim kho kev nyab xeeb. Hauv qhov kub thiab txias, qis dua kub lossis xeb cov ntaub ntawv ib puag ncig, xws li cov hlau tshwj xeeb lossis lub galvanized) yuav tsum tau siv los txuas lub neej pabcuam.