Thaum xaiv cov hlua khi tshwj xeeb, qhov loj me, qhov hnyav, cov duab ntawm cov khoom thauj yuav tsum tau nqa, thiab kev siv coefficient ntawm kev cuam tshuam ntawm txoj kev hoisting yuav tsum tau muab tso rau hauv qhov kev txiav txim siab, thiab cov kev xav tau ntawm kev ua haujlwm siab tshaj plaws. muab, thaum lub sijhawm ua haujlwm ib puag ncig thiab hom kev thauj khoom yuav tsum tau txiav txim siab. Nws yog ib qho tsim nyog yuav tau xaiv ib txoj hlua ntawm qhov ntev uas tsim nyog uas muaj peev xwm txaus thiab siv tau tib yam, yog tias siv ob peb lub slings tib lub sij hawm los nqa lub load, tib hom sling yuav tsum tau siv, thiab raw khoom. cov khoom ntawm lub tiaj tus sling yuav tsum tsis txhob cuam tshuam los ntawm ib puag ncig lossis kev thauj khoom. Txawm hais tias yuav tsum muaj kev sib txuas lossis cov hlua muag, yuav tsum tau ua tib zoo xav txog qhov kev sib tw kawg ntawm txoj hlua nrog cov khoom siv txuas thiab nqa khoom.
