The double girder gantry crane ndi yanzeru popanga zitsulo, zomwe zimatha kunyamula katundu wapakati pa 500kg mpaka 10,000kg.Crane yonyamula katundu padoko ili ndi maubwino monga kuyenda mozungulira mozungulira, kuphatikizira mwachangu ndikukhazikitsa, ndi malo ang'onoang'ono pansi.Ma cranes a Double-girder gantry adapangidwa kuti azisuntha, kukweza, kapena kunyamula zinthu zolemera, zomwe zimagwiritsidwa ntchito kusamutsa katundu wolemera m'mafakitole, malo osungiramo zinthu, malo ochitirako misonkhano, malo obwezeretsanso, malo osungiramo zombo, ndi mayadi onyamula ndi zina.
Ife SEVECNRANE timapanga ma cranes opangidwa ndi makonda opangidwa ndi girder kuti agwire ntchito zolemetsa zolemetsa pamwamba pa nthaka.Izi ndi zifukwa zomwe titha kukupatsirani galimoto yonyamula katundu padoko.Timapereka mitundu yosiyanasiyana ya makina opangira ma gantry m'mapangidwe osiyanasiyana, monga ma girder awiri, oboola bokosi kapena oboola matabwa, owoneka ngati truss, owoneka ngati U, ndi ma gantry oyenda.Ife SEVENCRANE tili ndi kuthekera kopereka ma cranes osavuta a girder gantry osavuta kugwiritsa ntchito, komanso apadera, opangidwa ndi magalasi opangidwa ndi ma gantry amitundu yosiyanasiyana.
Ma crane onyamula katundu ku Harbor amapereka maubwino okwera kwambiri, malo ogwirira ntchito okulirapo, kugwiritsa ntchito kwambiri malo onyamula katundu, kusungitsa ndalama zotsika, komanso kutsika mtengo kogwirira ntchito.Amapangidwa makamaka ndi njira zonyamulira, zida zokwezera, njira zoyendera za telescopic boom, shaft yayikulu, trunnion, miyendo, njira zopangira crane, ndi makina owongolera magetsi, pakati pa ena.
Crane yathu yonyamula katundu padoko ndi chinthu chodziwika kwambiri pantchito yolemetsa.Ma trolley onse okwera ndi winchi yotseguka amafunikira kusonkhanitsa ndikuyesedwa asanachoke kufakitale, ndikupereka ziphaso zoyezetsa.Titha kukhala tikugwiritsa ntchito zingwe zamagetsi, komanso makabati amagetsi otengera mtundu wina malinga ndi zomwe makasitomala amafuna.Makina athu a SEVENCRANE amatha kusinthidwa malinga ndi zosowa za makasitomala, kulola kuti agwiritsidwe ntchito pazinthu zosiyanasiyana zantchito.Kapangidwe kameneka kamatsimikizira kugwira ntchito kosasunthika komanso chitetezo champhamvu cha crane yonyamula katundu padoko.Crane ili ndi mphamvu yokweza kwambiri, yomwe imatha kupirira katundu waukulu.