Dab tsi yog cov qauv tshuaj xyuas kev nyab xeeb rau ob chav nqaj cranes?
Txhawm rau kom muaj kev nyab xeeb ntawm kev ua haujlwm ntawm ob chav girder choj crane, qee qhov kev soj ntsuam kev nyab xeeb yuav tsum tau ua thaum lub sijhawm ua haujlwm ntawm crane. Cov khoom soj ntsuam thiab cov ntsiab lus tseem ceeb yog raws li hauv qab no:
(1) Kev ua haujlwm ntawm kev nqa qhov siab limiter, kev hloov pauv mus los, thiab ntau yam kev sib cuam tshuam yog qhov qub, nyab xeeb, thiab txhim khu kev qha.
(2) Tag nrho cov khoom tseem ceeb ua tau raws li qhov yuav tsum tau muaj kev nyab xeeb: qhov qhib qhov nce yog tsawg dua 15% ntawm qhov loj me, thiab qhov torsional deformation tsawg dua 10%; Kev hnav ntawm board nuv bushing yog tsawg dua 50% ntawm qhov loj me, thiab kev hnav ntawm lub rooj tsavxwm nuv spindle yog tsawg dua 5%, tsis muaj tev, burrs, los yog vuam kho. Tus nuv hanger thiab pulley tsis muaj qhov tsis xws luag. Kev hnav thiab corrosion ntawm cov hlau hlau nyob rau saum npoo ntawm cov hlau hlau hlua yog tsawg dua 40% ntawm txoj kab uas hla ntawm cov hlau hlau, thiab cov xov hlau tawg hauv ib qho kev sib tw yog tsawg dua 10% ntawm tag nrho cov xov hlau. Tsis muaj qhov tawg, tsis muaj qhov pom tseeb thinning, tsis muaj core detachment, tuag kaum twisting, extrusion deformation, annealing, los yog hlawv tshwm sim. Cov kev sib txuas kawg thiab cov hlua ruaj ruaj, cov phaj siab, thiab cov npoo ntawm cov hlua hlau hlau tsis muaj qhov xoob, tsis muaj tsawg dua 2 lub phaj siab thiab tsis pub tsawg dua 3 clips. Lub nruas tsis muaj kab nrib pleb, thiab kev sib txuas thiab kho tsis tau xoob; Kev hnav ntawm lub tog raj kheej phab ntsa yog tsawg dua 20% ntawm thawj phab ntsa tuab; Txoj kev nyab xeeb yob yuav tsum tsis pub tsawg tshaj 2 lem, thiab qhov sib piv ntawm lub nruas txoj kab uas hla mus rau txoj kab uas hla ntawm txoj kab uas hla yuav tsum ua tau raws li qhov yuav tsum tau ua. Lub log sib npaug yog ruaj ruaj thiab cov hlua hlau steel yuav tsum ua tau raws li qhov yuav tsum tau ua. Lub nres tsis muaj qhov tawg, tsis muaj xoob, thiab tsis hnav hnyav. Lub nres tshem tawm ntawm ob sab yog qhov sib npaug thiab tsim nyog, nrog lub zog nres txaus. Kev hnav ntawm lub brake band yog tsawg dua 50% ntawm thawj thickness.
Los ntawm kev soj ntsuam kev nyab xeeb niaj hnub ntawm ob chav girder choj cranes, cov txiaj ntsig tseem ceeb tau ua tiav hauv kev tiv thaiv tus kheej raug xwm txheej, txo cov khoom siv sib tsoo, txhim kho cov khoom siv ua haujlwm, thiab txo cov nqi tu.
