ʻO kēia cantilever gantry crane he ʻano ʻike pinepine ʻia o ka crane gantry i hoʻohana ʻia no ka mālama ʻana i nā ukana nui ma waho, e like me nā pā ukana, ke awa moana.Pono e koho ʻia ka crane gantry beam hoʻokahi a i ʻole double beam gantry crane e like me nā koi kikoʻī e pili ana i ka hiki ke hoʻouka a me nā koi kūikawā kūikawā.Ke hāpai ʻia nā ukana ma lalo o 50 tons, ʻoi aku ka lōʻihi ma lalo o 35 mau mika, ʻaʻohe koi kikoʻī o ka noi, ʻo ke koho ʻana o ke ʻano gantry crane he kūpono.Inā ākea nā koi o ke kāʻei puka, wikiwiki ka hana, a i ʻole e hāpai pinepine ʻia ka ʻāpana kaumaha a me ka ʻāpana lōʻihi, a laila pono e koho ʻia ka crane gantry ʻelua.Hoʻohālikelike ʻia ka crane gantry cantilever e like me ka pahu, me nā kāʻei pālua he ala slanted, a ua māhele ʻia nā wāwae i nā ʻano A a me nā ʻano U e like me nā koi hoʻohana.
Ua pili ka crane gantry double-girder maʻamau i ka ukana maʻamau, wehe, hāpai, a me ka lawelawe ʻana i nā hana ma nā pā waho a me nā pā alanui.Hiki i ka cantilever gantry crane ke lawelawe i nā ukana ʻoi aku ke kaumaha ma nā wahi o waho, e like me nā awa, nā pā hale, nā hale kūʻai, a me nā kahua kūkulu hale.Hoʻohana ʻia ka cantilever gantry crane ma nā ala huakaʻi i kau ʻia ma ka ʻāina, a hoʻohana nui ʻia no ka hoʻouka ʻana a me ka hoʻokuʻu ʻana i nā hana ma nā pā hale mālama waho, pier, nā mea kanu mana, nā awa a me nā pā kaʻaahi, a me nā mea ʻē aʻe.Hoʻohana ʻia ka cantilever gantry crane i nā wahi hana ākea no ka lawelawe ʻana i nā ukana kaumaha a i ʻole nā mea waiwai, e ʻike pinepine ʻia i loko o nā hale kūʻai, nā pā alanui kaʻaahi, nā pā ipu, nā ʻōpala, a me nā pā kila.
Ma muli o kona ʻano, ʻo ka crane gantry waho kahi ʻāpana nui o nā lako mīkini i hoʻohana pinepine ʻia.Loaʻa nā Gantries me nā mana like a me nā kikoo i nā bridge cranes, a kūpono i nā noi i loko a me waho.Ua like nā Gantries me nā cranes bridge, koe wale nō ka hana ma nā ala ma lalo o ka ʻili honua.