Lub sheave spin ntawm lub qag lossis bearing hauv tus ncej ntawm lub pulley. Qhov no tso cai rau cov hlau los yog hlua txav tau yooj yim, txo kev sib txhuam thiab hnav ntawm lub cable. Shaveves tuaj yeem siv los hloov kho lub cable lossis hlua, nqa cov khoom thauj, thiab xa hluav taws xob. Lo lus sheave thiab pulley yog qee zaum siv sib hloov.
rhawv zeb siv rau dab tsi?
Lawv siv tandem nrog hlua, siv, lossis cable nqa khoom nrog crane. Qhov tseem ceeb, sheave yog ib lub log nrog qhib zawj uas ib txoj hlua los yog cable haum nyob ib puag ncig kom nws tuaj yeem tig ib ncig ntawm sab nrauv.
Yuav ua li cas cov sheave raws li phau Vajlugkub?
Shave of grain are revered in the Bible and in ancient cultures. Cov bundles tau txaus siab rau kev ua haujlwm hnyav uas tau mus rau hauv kev loj hlob, sau thiab ziab tawm cov qoob loo zoo no. Nws yog lub hom phiaj ntawm ib zaj nkauj hu ua txoj moo zoo nyob rau xyoo 1800s.
Dab tsi yog qhov sib txawv ntawm sheave thiab pulleys?
Lub sheave spin ntawm ib qho axle lossis bearing hauv tus ncej ntawm lub pulley. Lub pulley yog lub log ntawm lub qag lossis ncej uas yog tsim los txhawb kev txav thiab hloov kev coj ntawm cov hlua khi los yog siv, los yog kev hloov ntawm lub zog ntawm lub ncej thiab cable los yog siv.
Yuav ua li cas yog sheaves?
1: ib qho ntawm cov stalks thiab pob ntseg ntawm cov nyom nyom lossis qee zaum lwm cov khoom cog ua ke. 2: ib yam dab tsi zoo li ib tug sheave ntawm grain ib sheaf ntawm cov ntaub ntawv. 3: lojtus lej lossis tus lej.
