ʻO ka crane ma luna o ka pahu hopu he mea kaumaha, ʻelua-girder overhead lift machine i hoʻolako ʻia me nā pahu hopu i hiki ke hoʻohana mau ʻia. Hoʻokumu ʻia ʻo overhead crane me ka bakeke hopu, nā ʻano huakaʻi o ka crane, nā kaʻa hāpai, nā mea uila, ka bakeke hopu, a me nā mea ʻē aʻe. ʻO nā bākeke Grab nā mea hana e hoʻouka a hoʻokuʻu i nā mea e like me ke one, ka lanahu, ka pauka mineral, a me ka nui o nā mea momona, a pēlā aku.
Hoʻohana nui ʻia ka crane overhead me ka bakeke hopu no ka hoʻouka ʻana, wehe ʻana, hui ʻana, hana hou, a me ke kaupaona ʻana i ka ʻōpala. Hoʻokumu ʻia nā cranes ma luna o ka ʻāina i ka papa nui, nā wēlau o nā kaola, kahi grapple, kahi mea hele, nā trolleys, nā ʻōnaehana uila, a me nā ʻāpana ʻē aʻe. Me ka Grab overhead crane, hiki iā ʻoe ke kiʻi i nā mea kaumaha, a hiki iā ʻoe ke hana maʻalahi i kāu hana ma ka hale hana, hale hana, workstation, awa, etc. ʻO kēia ke ʻano o nā mea ukana kaumaha-hoʻoneʻe kaumaha-duty crane, me ka mea hoʻokahi, e hoʻomaha iā ʻoe i nā hana hāpai ʻeha. Loaʻa nā ʻāpana uila uila no nā cranes i nā ʻano he nui, Ua hoʻolako kā mākou hui i kā mākou hopu no nā cranes me nā poloka uila maʻamau e like me nā mīkini hoʻololi, hiki ke noʻonoʻo ʻia kahi pahu hopu pahu e hoʻoneʻe i ka pahu i uhi ʻia i loko o kahi paʻa, no ka mea, ʻo ia ka mana hoʻopaʻa nui, a hoʻohana ʻia no ka hoʻopaʻa ʻana i nā mea paʻa e like me ka hao, etc.
Hoʻokaʻawale ʻia ʻo overhead crane me ka pahu hopu i ka māmā, waena, kaumaha, a me ka ultra-heavy grips e like me ka mea, ke kaumaha o ka hiki ke amo. I ka manawa like, hiki i ka hiki ke hāpai i ke kaumaha hopu.
Hiki ke hoʻomalu kūʻokoʻa ka lift a me ka crane, a i ʻole e hana kaʻawale a hui pū paha. Hoʻolako ʻia nā cranes waho me nā mīkini hoʻokiʻekiʻe, nā pahu hoʻokele uila, a me nā mea pale ua. Loaʻa nā cockpits kūikawā no ka deck a pod cranes, me ka ʻike maopopo, nā hana kūpono. Aia nā kumu like ʻole āu e noʻonoʻo ai ma mua o ke kūʻai ʻana i kahi crane overhead me ka pahu hopu. Aia kekahi mau mea i ka loaʻa ʻana o nā ʻāpana pani a me nā hola hana holoʻokoʻa.