Ma Girders ndi Frames a double-beam gantry crane ndi zomangira zowotcherera popanda zolumikizira msoko, zolimba kwambiri komanso zopingasa. Makina oyenda a trolley amayendetsedwa ndi magetsi, chowomba chambiri cha gantry amatha kukhala ndi zomangira ndi zida zina zonyamulira zida, zomwe zimayenera kugwiritsidwa ntchito mosiyanasiyana.
Kuthekera kokweza kwa crane ya gantry yokhala ndi mipanda iwiri kumatha kukhala matani mazana ambiri, ndipo imagwiritsidwa ntchito kwambiri m'malo osungiramo zinthu zotseguka, malo osungiramo zinthu, malo osungiramo zinthu, malo osungira simenti, mafakitale a granite, mafakitale omanga, mafakitale opanga uinjiniya, mayadi a njanji pokweza ndi kutsitsa katundu. Double beam gantry crane imagwiritsidwa ntchito kwambiri ponyamula katundu wolemetsa.
Ma crane a double beam gantry ndi opepuka komanso osavuta kunyamula, ogwiritsira ntchito miyendo kunyamula milatho, gulaye, ndi zinyalala. M'mapangidwe apamwamba kwambiri, ma crane a double girder gantry amatha kuloleza kuti akweze mtunda wautali chifukwa chokweracho chimayimitsidwa pansi pa mtengowo. Safuna zipangizo zambiri za matabwa a mlatho ndi kachitidwe ka msewu wonyamukira ndege, kotero kumanga miyendo yothandizira iyenera kusamala kwambiri. Double beam gantry crane imaganiziridwanso ngati pali chifukwa chosaphatikizirapo njanji yokwera padenga, ndipo nthawi zambiri imagwiritsidwa ntchito potsegula pomwe mizati yonse ndi mizati sizingayikidwe, kapena zitha kugwiritsidwa ntchito pansi pa njira yomwe ilipo.
Ma crane okwera pawiri nthawi zambiri amafunikira chilolezo chokulirapo pamwamba pa ma crane okwera, pomwe trolley imakwera pamwamba pamiyala ya mlatho pa crane. Mapangidwe oyambira a gantry crane iwiri ndikuti miyendo ndi mawilo amayenda mozungulira kutalika kwa chitsulo chapansi, ndi zomangira ziwiri zokhazikika pamiyendo, ndipo trolley yokweza imayimitsa ma booms ndikuyenda pamwamba pa zomangira.