Mobile gantry crane yog tsim los ntawm ob lub girders, mus ncig teb chaws mechanisms, nqa mechanisms, thiab hluav taws xob qhov chaw. Lub peev xwm nqa ntawm lub xov tooj ntawm tes gantry crane tuaj yeem yog ntau pua tons, yog li qhov no kuj yog hom kev ua haujlwm hnyav gantry crane. Muaj lwm hom mobile gantry crane, European-hom ob-girder gantry cranes. Nws tau txais lub tswv yim ntawm lub teeb yuag, tsis tshua muaj siab ntawm lub log, ib cheeb tsam me me, kev ua haujlwm ruaj khov, thiab cov qauv compact.
Mobile gantry crane kuj tseem siv tau hauv mines, hlau thiab steel mills, railway yards, thiab marine ports. Nws tau txais txiaj ntsig los ntawm kev tsim ob-girder nrog lub peev xwm ntau dua, qhov loj dua, lossis siab dua nqa qhov siab. Ob chav-girder cranes feem ntau xav tau kev tshem tawm ntau dua saum cov cranes beam-theem elevation, raws li cov tsheb thauj khoom hla dhau ntawm cov girders ntawm tus choj cranes. Txij li ib leeg-girder cranes yuav tsum tsuas yog ib txoj kab ciav hlau khiav, cov tshuab no feem ntau muaj qhov hnyav qis dua, txhais tau tias lawv tuaj yeem siv cov txheej txheem sib zog ua haujlwm thiab txuas rau cov tsev uas twb muaj lawm txhawb nqa cov qauv, uas tsis tuaj yeem ua haujlwm hnyav xws li ob chav girder mobile gantry crane.
Cov hom mobile gantry crane kuj tseem tsim nyog rau kev tsim cov pob zeb ua vaj tse, hnyav hnyav steel bracing girders, thiab thauj cov ntoo. Ob chav girder gantry crane muaj nyob rau hauv ob hom, A hom thiab U hom, thiab tau nruab nrog lub tshuab nqa ua ke, feem ntau yog qhib-kawg hoist lossis winch.
Muab ob npaug rau-girder gantry crane tuaj yeem muab rau hauv kev ua haujlwm sib txawv, nws qhov peev xwm ntsuas raws li cov neeg siv khoom xav tau. Peb SEVENCRANE engineers thiab tsim cov kev cai daws teeb meem uas muaj xws li kev lag luam, lub teeb yuag cranes mus rau siab-muaj peev xwm, hnyav-duty, welded girder-boxed cyclops.