An i-crane ephezulu, eyaziwa nangokuthi i-bridge crane, iyithuluzi elibalulekile elisetshenziswa ekukhiqizeni, ekwakheni, nakwezinye izimboni. Lolu hlobo lwe-crane lwenzelwe ukuphakamisa nokuthutha imithwalo esindayo kusetshenziswa uchungechunge lwezingxenye ezisebenzisana ukudala uhlelo lokuphakamisa oluphephile nolusebenzayo. Kulesi sihloko, sizoxoxa ngezingxenye ezintathu eziyisisekelo ze-overhead crane.
Ingxenye yokuqala ye-crane ephezu kwendlu yibhuloho. Lena yi-horizontal beam edlula ububanzi be-crane futhi isekele i-hoist ne-trolley. Ibhuloho ngokuvamile lenziwe ngensimbi futhi lisekelwa kuzo zombili izinhlangothi ngamaloli okugcina, afakwe amasondo agijima ezitimeleni noma emizileni efakwe esakhiweni sesakhiwo. Ibhuloho lingenye yezingxenye ezisindayo kakhulu ze-crane futhi lenzelwe ukumelana nesisindo somthwalo kanye nokucindezeleka kokunyakaza.
Ingxenye yesibili ye-overhead crane yi-hoist. I-hoist yindlela esetshenziswa ukuphakamisa nokwehlisa umthwalo. Ixhunywe kwi-trolley futhi ingahamba ngokuvundlile ngobude bebhuloho. I-hoist ifaka injini, eqhuba indlela yokuphakamisa, kanye nesigubhu, esigoqwe ngentambo yensimbi noma ngentambo yocingo. I-hoist ifaka nezilawuli, njengezinkinobho noma ama-lever, ezivumela umqhubi ukuthi aqale, ame, futhi alungise isivinini sokuphakamisa kanye nesiqondiso.
Ingxenye yesithathu ye-overhead crane yi-trolley. I-trolley yindlela ehambisa i-hoist eceleni kobude bebhuloho. I-trolley ihlanganisa amasondo noma ama-roller agijima eceleni kwe-flange engezansi yebhuloho, kanye nama-motor kanye nezilawuli ezivumela umqhubi ukuthi ahambise umthwalo emuva naphambili. I-trolley ivame ukufaka i-hook noma enye idivayisi yokunamathisela esetshenziselwa ukuphakamisa nokuthutha umthwalo.
Ama-crane angaphezulu ayimishini eyinkimbinkimbi edinga ukuklama ngokucophelela, ukufakwa, kanye nokusebenza ukuqinisekisa ukuphepha nokusebenza kahle. Izingxenye ezintathu eziyisisekelo ze-crane engenhla yibhuloho, i-hoist, kanye ne-trolley, ezisebenza ndawonye ukuphakamisa nokuthutha imithwalo esindayo. Ezinye izici nezesekeli zingafakwa ukuthuthukisa ukusebenza nokuphepha.
Isikhathi sokuthunyelwe: Agasti-08-2024