Cranes yog cov cuab yeej tseem ceeb hauv ntau qhov kev lag luam, los ntawm kev tsim kho mus rau kev tsim khoom. Lawv muaj ntau yam khoom uas ua haujlwm ua ke los pab txhawb nqa hnyav thiab txav mus los. Txawm li cas los xij, zoo li txhua qhov kev siv tshuab, cov khoom siv crane tuaj yeem hnav dhau lub sijhawm vim kev siv ntau thiab ib puag ncig. Nws yog ib qho tseem ceeb rau kev ntsuam xyuas qhov xwm txheej ntawm cov khoom no tsis tu ncua kom muaj kev nyab xeeb thiab ua haujlwm tau zoo. Kab lus no yuav qhia koj txog yuav ua li cas txiav txim siab seb qhov crane yuav tsum tau hloov pauv li cas.
Xaus - ntawm - Lub neej Kev Cai Rau Lub Ntsiab Cai
Lub crane tau raug kho dua ob peb zaug, thiab lub ntsiab girder yog deformed loj heev los yog tawg ob peb zaug tom qab ob deflections tau kho, uas yog qhov kawg ntawm nws lub neej kev nyab xeeb.
Ib tug tsim nyog choj crane lub ntsiab beam deflection deformation thiab cov kab nrib pleb yog qaug zog puas tsuaj, uas yog cov khoom siv lub koom haum cov qauv nyob rau hauv kev ntxhov siab nyob rau hauv qhov kev txiav txim ntawm lub zos cyclic plam thiab yielding thiab gradual tsim ntawm linear cumulative puas. Yog li ntawd, rov qab hnyav downward deflection los yog rov ua dua cov kab nrib pleb cim qhov kawg ntawm kev nyab xeeb kev pab cuam lub neej ntawm lub ntsiab girder.
Feem ntau, lub neej kev nyab xeeb ntawm cov cranes thiab electromagnetic cranes yog 20 xyoo, casting cranes yog ntau tshaj 30 xyoo, thiab dav dav -khoom siv cranes yog 40 mus rau 50 xyoo. Lub neej kev pab cuam tiag tiag ntawm crane yog txiav txim siab los ntawm cov xwm txheej tshwj xeeb ntawm kev siv, tsis tas yuav tsum ua raws li cov xyoo saum toj no.
Xaus - ntawm - Lub Neej Txheej Txheem Rau Hook
Hooks nrog cov teeb meem hauv qab no yuav tsum tau muab tshem tawm thiab hloov pauv:
- Kev tawg
- Qhov chaw txaus ntshai hnav tshaj 10% ntawm qhov siab qub
- Yam txaus ntshai thiab sib txuas caj dab ua rau cov yas deformation
- Qhib tau nce 15% ntawm qhov loj me
- Torsional deformation ntawm tus nuv taub hau tshaj 10 degrees los yog ntau tshaj
- Thaum hnav ntawm phaj nuv bushing ncav cuag 50% ntawm thickness, lub bushing yuav tsum tau muab pov tseg.
- Yog hais tias hnav ntawm lub mandrel ntawm lub phaj nuv mus txog 5% ntawm qhov loj me, lub mandrel yuav tsum tau muab pov tseg.
Kev Nyab Xeeb Tshooj ntawm Hook:
Tshooj txaus ntshai ntawm tus nuv yog ib feem tseem ceeb ntawm kev soj ntsuam txhua hnub thiab kev soj ntsuam kev nyab xeeb, tom qab tshuaj xyuas lub zog ntawm tus nuv, nws tau txiav txim siab tias tus nuv muaj cov ntu txaus ntshai hauv qab no.
- B-B seem: ntu no muaj kev nyuaj siab, thiab tib lub sijhawm, ntu no feem ntau hnav, kom tus ntoo khaub lig- ntu ntu raug txo
- Tshooj C-C: Qhov no yog seem tsawg tshaj plaws thiab muaj kev phom sij ntawm kev raug rho tawm
- Tshooj A-A: Tshooj lus no raug rau cov quab yuam nyuaj
Xaus- ntawm-Lub neej Kev Cai Rau Cov Khaub Ncaws
Sheaves yuav tsum tau muab tshem tawm thiab hloov yog tias lawv muaj qhov tsis xws luag hauv qab no:
- Lub phab ntsa thickness ntawm txoj hlua zawj ntawm lub sheave yog hnav mus txog 20% ntawm thawj thickness
- Cov radial hnav nyob rau hauv qab ntawm txoj hlua zawj ntawm lub sheave tshaj 50% ntawm txoj kab uas hla ntawm txoj hlua hlau los yog qhov tsis sib xws hnav tshaj 3 hli.
- Cam khwb cia hlau sheave pom cov kab nrib pleb loj dua
- Kev puas tsuaj loj rau lub npoo npoo
- Kev tawg
- Lwm yam tsis xws luag uas ua rau cov hlua hlau puas
Xaus- ntawm-Lub neej Kev Cai Rau Nruas
Thaum ib qho ntawm cov xwm txheej hauv qab no tshwm sim hauv lub nruas, nws yuav tsum muab pov tseg:
- Thaum hnav ntawm lub nruas phab ntsa nce mus txog 20% ntawm thawj phab ntsa tuab, lub nruas yuav tsum tau muab pov tseg.
- Xyuas lub nruas thiab ncej yuav tsum tsis txhob muaj cov kab nrib pleb, yog tias pom cov kab nrib pleb, lawv yuav tsum tau muab pov tseg thiab rov ua dua tshiab raws sijhawm.
Xaus - ntawm - Lub Neej Txheej Txheem Rau Log
Cov log yuav tsum tau muab pov tseg thaum muaj ib qho xwm txheej hauv qab no tshwm sim:
- Kev tawg
- Thaum qhov kev khiav ceev qis dua 50m / min, qhov℃ntawm ellipticity (ellipticity= siab tshaj txoj kab uas hla- txoj kab uas hla tsawg kawg nkaus) nce mus txog 1 hli, thiab thaum khiav ceev siab tshaj 50m / min, lub℃ntawm ellipticity mus txog 0.5mm, nws yuav tsum tau muab tshem tawm thiab hloov.
- Yog hais tias lub thickness ntawm lub tread lub log yog hnav mus rau 15% ntawm thawj thickness, nws yuav tsum tau muab tshem tawm thiab hloov.
- Yog tias qhov hnav ntawm lub log rim ntau tshaj 50% ntawm qhov qub thickness, nws yuav tsum tau muab pov tseg thiab hloov.
Xaus - ntawm -Lub neej Kev Cai Rau Nres
Yog tias tus nres muaj qhov tsis xws luag, nws yuav tsum tau muab pov tseg thiab hloov pauv:
- Hnav ntawm cov ntaub thaiv npog ntau tshaj 50% ntawm qhov qub thickness.
- Kev hnav ntawm lub me ncej thiab mandrel tshaj 5% ntawm tus thawj txoj kab uas hla.
- Kev qaug zog tawg ntawm khi pas nrig, nres caj npab, thiab lub caij nplooj ntoos hlav.
- Thaum tshav kub kub los yog kev puas tsuaj rau lub dov bearings ntawm hydraulic actuator nres.
- Kev tawg
- Yas deformation (irrecoverable deformation) ntawm springs
Xaus - ntawm -Lub neej Kev Cai Rau Nres Tsheb
Nres lub log yuav tsum tau muab pov tseg yog tias muaj qee yam hauv qab no tshwm sim:
- Kev tawg
- Yog tias muaj qhov tsis xws luag thiab tawg ntawm qhov chaw ua haujlwm ntawm lub log nres, nws yuav tsum tau muab pov tseg thiab hloov.
- Lub log nres ntawm lub tshuab hoisting yuav tsum tau muab pov tseg thaum hnav tshaj 40% ntawm qhov qub thickness, thiab lub log nres ntawm lub tshuab khiav yuav tsum tau muab pov tseg thiab hloov thaum hnav ntau dua 60% ntawm qhov qub thickness.
Hlau hlua Scrap Criteria
Cov hlua hlau yuav tsum tau muab pov tseg thiab hloov yog tias muaj ib qho xwm txheej hauv qab no tshwm sim:
- Hlau hlua nyob rau hauv ib lub suab (xov hlua hlua nyob ib ncig ntawm lub axial nrug) nyob rau hauv tus naj npawb ntawm cov xov hlau tawg mus txog 10% ntawm tag nrho cov xov tooj ntawm cov hlua
- Hlau hlua hnav, txoj kab uas hla yuav txo, yog tias ntau tshaj 40% ntawm txoj kab uas hla ntawm txoj hlua hlau, yuav tsum tau muab pov tseg thiab hloov
- Tag nrho cov hlua ntawm cov hlua hlau tawg lossis cov tub ntxhais ntawm cov hlua hlau yog extruded, uas ua rau kev puas tsuaj rau cov hlua hlau.
- Hlau hlua nrog qhov tseem ceeb hauv corrosion.
- Qhov loj deformation ntawm hlau hlua xws li kinking, tuag kawg, nyuaj khoov, yas deformation, thiab lwm yam.
- Thaum qhov kev nyab xeeb muaj tsawg dua 6, tus qauv txuas ntxiv yog txhawm rau rhuav tshem cov xov hlau hauv qhov sib tw mus txog 10% ntawm tag nrho cov xov tooj ntawm cov hlua hlau. Yog tias nws yog 6 * 9=114 cov xov hlau, thaum cov xov tooj tawg mus txog 12 xov hlau, nws tuaj yeem muab pov tseg thiab rov ua dua tshiab, 6 * 37=222 cov xov hlau, thaum cov xov tooj tawg mus txog 22 xov hlau, nws tuaj yeem muab pov tseg thiab rov ua dua tshiab. Thaum qhov kev nyab xeeb yog 6 ~ 7, tus naj npawb ntawm cov xov hlau tawg yog 12%, thiab thaum muaj kev nyab xeeb ntau dua 7, cov xov hlau tawg yog 14%.
- Yog tias cov txheej txheej sab nrauv ntawm cov hlau muaj qhov hnyav hnyav, tab sis tsawg dua 40% ntawm txoj kab uas hla ntawm cov hlua hlau, nws yuav tsum tau ua raws li qib ntawm kev hnav, tus naj npawb ntawm cov xov hlau tawg tau pom nyob rau hauv Table 1 rau scrapping yuav tsum tau luv nqi raws li Table 2, thiab muab pov tseg raws li tus naj npawb ntawm cov xaim tawg tom qab luv nqi.
Piv txwv li: 6 * 37 + 1 ntoo khaub lig- qhov txhab hlau hlua, qhov kev nyab xeeb ntawm 5, qhov chaw hnav ntawm cov hlua hlau rau 25%, ces ib qho kev sib tw nyob rau hauv qhov tawg 22 * 60%=13.2 steel hlau scrapped.
Ua kom muaj kev nyab xeeb thiab ua haujlwm ntawm kev ua haujlwm crane yuav tsum tau soj ntsuam tas li ntawm crane qhov chaw rau kev hloov. Henan Minecranes yog lub chaw tsim khoom lag luam crane nrog cov cuab yeej zoo tshaj plaws thiab cov khoom siv ntau lawm nrog rau cov kws tshaj lij kev tshawb fawb thiab kev tsim kho pab pawg. Kev tsim khoom ntawm crane hooks, crane log, sheaves, crane hlua nruas, rub, trolley, winch thiab ntau lwm yam khoom siv crane. Yog tias koj muaj lus nug lossis xav tau ntawm cranes thiab crane qhov chaw, thov hu rau peb!
