Kev ua kom muaj peev xwm rub tau zoo: Rau lub crane nrog lub peev xwm nqa ntawm 20t, nws qhov siab tshaj plaws nqa tag nrho (nrog rau lub thoob tuav lub qhov hnyav thiab cov khoom hnyav) yuav tsum tsis pub tshaj 20t. Yog li ntawd, thaum siv lub clamshell grab thoob nrog tus kheej - qhov hnyav ntawm 8t, qhov theoretical siab tshaj qhov hnyav ntawm cov khoom tsuas yog 12t. Yog hais tias cov ntaub ntawv loj ceev yog 1.0 t / m³, thiab covrub thoobntim ntawm 3m³ yog raws nraim tag nrho loaded nrog 3t, lub crane lub peev xwm nqa siv tus nqi tsuas yog (8+3)/20=55%, thiab cov cuab yeej muaj peev xwm yog heev underutilized. Yog tias tuav lub teeb thiab cov khoom loj xws li pob kws (qhov ceev txog 0.75 t / m³), 3m³ ntim tsuas tuaj yeem nqa txog 2.25t, nrog rau tag nrho qhov hnyav ntawm 10.25t, thiab kev siv tus nqi qis dua ntawm 51.25%, nthuav tawm lub xeev tsis muaj txiaj ntsig ntawm "tag nrho lub peev xwm ntawm lub thoob.
Kev Tshawb Fawb Kev Siv Hluav Taws Xob Hluav Taws Xob: Hauv txhua lub voj voog ua haujlwm, lub zog siv hauv kev nqa 8 tons ntawm qhov hnyav tuag yog tsau thiab tsis muaj txiaj ntsig. Qhov siab dua tus kheej - qhov hnyav feem pua, qhov feem pua ntawm lub zog siv rau kev nqa cov khoom siv tau zoo, ua rau muaj kev nce nqi ntawm kev siv hluav taws xob ntau ntxiv rau ib chav ton ntawm cov khoom thauj thiab tshem tawm.
Keeb kwm:Qhov teeb meem no feem ntau tshwm sim thaumntestsim los rau ib qho khoom hnyav (xws li ore, nrog qhov ntom ntom uas muaj peev xwm tshaj li 2.5 t / m³) yog siv rau hauv cov xwm txheej uas muaj ntau hom khoom thauj lossis cov khoom hnyav. Lawv cov qauv tsim (phaj tuab, cov qauv qauv) tsis zoo raws li cov yam ntxwv ntawm lub hom phiaj cov khoom thauj, ua rau muaj qhov loj me rau cov khoom me me.
Txoj hlua kaw yog qhov tseem ceeb thauj khoom -cov kabmob tivthaiv rau lub thoob khib nyiab qhov kev ua haujlwm, ua haujlwm nyob rau hauv cov xwm txheej hnyav thiab nthuav tawm txoj haujlwm tsis ua haujlwm nyuaj.
Specific Failure Mechanism Analysis:
Khoov Fatigue: Nrog rau txoj hlua txoj kab uas hla ntawm 30mm thiab ib txoj kab uas hla ntawm 650mm, D / d piv yog kwv yees li 21.7. Although this exceeds the minimum requirement of 20 as specified in the standard, for grab buckets with high operating levels (such as A7/A8) and extremely high closing frequency, the wire rope repeatedly bends on the pulley. Hloov kev ntxhov siab yog tsim nyob rau hauv cov hlau, uas yog lub ntsiab ua rau cov hlau qaug zog thiab sab hauv cov hlau tawg (tsis yooj yim pom nrog lub qhov muag liab qab). Tus mob stroke ntev li 17.8 meters, txhais tau hais tias tus naj npawb ntawm khoov nyob rau hauv ib lub voj voog yog tsau, tab sis lub siab zaus accelerates cov txheej txheem qaug zog.
Corrosion:Hauv cov av ntub, ntsev-txhaj tshuaj ib puag ncig xws li cov chaw nres nkoj, cov roj lubricating sab hauv ntawm cov hlua hlau tsis ua haujlwm, ua rau muaj xeb hauv cov hlau hlau. Qhov no ua rau txoj hlua tsis muaj zog ntawm sab hauv thiab, nrog rau kev qaug zog, ua rau nws lub neej luv luv.
Keeb kwm: Therub thoobKev tsim qauv yuav tsuas yog ua tau raws li qhov muaj kev nyab xeeb zoo li qub, tsis tas yuav xav txog qhov kev cuam tshuam dynamic loads, lub voj voog suav, thiab ib puag ncig corrosion ntawm kev ua haujlwm tiag tiag. Kev saib xyuas kuj tseem tsis muaj kev soj ntsuam cov kws tshaj lij ntawm cov hlua hlau sab hauv (xws li kev kuaj hlau nplaum).
