Xyoo no, ntau thaj chaw ntawm peb lub tebchaws tau los nag, thiab tam sim no peb yuav tsum ua txoj haujlwm zoo los tiv thaiv xeb rauphau ntawv tuav qib. Cov qib thaiv tuaj yeem siv ntau zaus, tab sis nws yog qhov tsim nyog kom tsis txhob siv lubphau ntawv tuav qib nyob rau hauv huab cua los txhawm rau txhim kho kev pabcuam lub neej ntawm qib thaiv thiab tswj kev ua haujlwm ntawm qib thaiv. Ua haujlwm saib xyuas rau tus tuav tes thaum huab cua los nag. Cov khoom siv ntawmqib thaiv is metal, and most of the metal has the defect of rust. Doing good maintenance work can avoid the danger of rusting on the lever hoist and extend theqib thaiv. The service life improves its operational safety. If the project is more urgent and the amount of precipitation is particularly low, people can consider building a canopy for lifting work, but it must be maintained in time after use.
