Cov menyuam yog qhov tseem ceeb ntawm cov chav zawv zawg tawv, feem ntau siv hauv cov qhov rooj thiab cov nplaim ntoo thiab cov ntoo. Qhov zoo thiab kev ua tau zoo ntawm iav pulleys muaj feem xyuam rau kev qhib kev kawm ntawm tag nrho cov iav qhov rooj. Xaiv lub zoo sheave yog ib txwm yuav tsum, thiab xaiv txoj cai sheave yog ib yam li tseem ceeb. Feem ntau, tib lub ntim ntawm cov steeled iav qhov rooj yuav hnyav dua li cov ntoo ntoo, tab sis cov iav txias dua li cov ntoo ntoo. Yog li cov iav iav dav hlau yuav siv tau rau ib qho sheave, qhov kev sib txhuam ntawm ib lub ntsej muag txias, yog qhov kev txiav txim siab ntau dua li ntawm ob lub sheave. Muaj peev xwm qhia lub paj Key khoom kub khoom 01A qauv, tus qauv no tuaj yeem nqa 120kg, cov dav dav iav qhov rooj yog txaus.
Cov menyuam yog qhov tseem ceeb ntawm kev zawv zawg kho vajtse
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