Lub gantry crane yog ib hom kev nqa dav hlau uas muaj kev txhawb nqa ntawm ob txhais ceg, txav raws lub log, lem, lossis cov tsheb ciav hlau nqa lub boom, slings, thiab hoist. Ib qho nyiaj siv ua haujlwm crane, feem ntau hu ua choj crane, yog zoo li tus choj txav, thaum lub gantry crane muaj tus choj hla kev txhawb nqa nrog nws tus kheej thav duab. Girders, kab teeb, thiab ob txhais ceg yog qhov tseem ceeb ntawm lub gantry crane thiab paub qhov txawv ntawm qhov nyiaj siv ua haujlwm crane lossis choj crane. Yog tias tus choj tau txais kev txhawb nqa nruj los ntawm ob lossis ntau dua ob txhais ceg khiav ntawm ob txoj kev ruaj khov hauv av, ces lub crane hu ua gantry (USA, ASME B30 series) lossis goliath (UK, BS 466).
Lub gantry crane yog ib hom ntawm dav hlau crane uas muaj ib qho kev teeb tsa ib leeg lossis ob-girder teeb tsa txhawb nqa ntawm ob txhais ceg uas yog txav los ntawm lub log lossis ntawm txoj kev tsheb ciav hlau. Ib leeg-girder gantry cranes ntiav ntau lub lifting jacks nyob ntawm seb hom haujlwm, thiab kuj tseem yuav ntiav European-style jacks. Lub peev xwm nqa ntawm ob-girder gantry crane tuaj yeem yog ntau pua tons, thiab hom yuav yog ib nrab-girder tsim los yog ob txhais ceg nrog ib txhais ceg nyob rau hauv daim ntawv ntawm lub cev pob txha. Ib qho me me, portable gantry crane tuaj yeem ua tib yam haujlwm uas lub jib crane ua, tab sis nws tuaj yeem txav mus los ntawm koj qhov chaw thaum koj lub tuam txhab loj hlob thiab koj pib optimizing thiab layout warehouse chaw.
Portable gantry systems kuj tseem yuav muab tau yooj yim dua li jib lossis stall crane. Ntau hom nyiaj siv ua haujlwm cranes suav nrog gantry, jib, choj, chaw ua haujlwm, monorail, nyiaj siv ua haujlwm, thiab kev sib dhos. Nyiaj siv ua haujlwm cranes, suav nrog gantry cranes, yog qhov tsim nyog nyob rau hauv ntau ntau lawm, txij nkawm, thiab kev lag luam ib puag ncig uas yuav tsum tau ua kom tau txais txiaj ntsig los nqa thiab txav cov khoom hnyav. Overhead lawj cranes yog siv los nqa thiab txav cov ntaub ntawv los ntawm ib qho chaw mus rau lwm qhov kom muaj kev nyab xeeb thiab ua tau zoo raws li qhov ua tau.
Ob chav-girder choj cranes yog tsim los ntawm ob txoj hlua txuas txuas rau ntawm txoj kev, thiab feem ntau yog muab cov khoom siv hluav taws xob hluav taws xob tether-rope elevators, tab sis lawv kuj tseem tuaj yeem muab cov khoom siv hluav taws xob siv hluav taws xob nyob ntawm daim ntawv thov. Muaj nyob rau hauv ib leeg-ceg lossis cov qauv siv ob txhais ceg, Spanco PF-series ntawm gantry crane tshuab tuaj yeem nruab nrog lub zog traverse. Cov kev cai hauv qab no siv tau rau txhua qhov kev lag luam cranes siv rau ntawm qhov chaw, suav nrog automated, cockpit-ua haujlwm, gantry, semi-gantry, phab ntsa, jib, choj, thiab lwm yam.
Ntau lub sij hawm, tus choj nyiaj siv ua haujlwm tseem yuav raug taug qab, kom tag nrho cov kab ke tuaj yeem taug kev mus rau pem hauv ntej lossis rov qab hla lub tsev. Choj cranes yog tsim nyob rau hauv cov qauv ntawm lub tsev, thiab feem ntau yog siv cov qauv ntawm lub tsev raws li lawv cov kev txhawb nqa. Koj tuaj yeem ua haujlwm choj cranes ntawm qhov nrawm nrawm, tab sis nrog gantry cranes, feem ntau, cov khoom thauj tau txav mus rau qhov nrawm dua. Ib leeg-girder choj cranes tseem muaj peev xwm nqa tau zoo, thaum piv nrog qee qhov ntawm lwm cov cranes, tab sis lawv feem ntau max tawm ntawm 15 tons ntawm lub peev xwm.