I-crane yebhuloho elingaphansi, eyaziwa nangokuthi i-crane yebhuloho eligijima ngaphansi noma i-underslung bridge crane, uhlobo lwe-crane engaphezulu esebenza kusistimu ye-runway ephakeme. Ngokungafani nokhreni bendabuko abaphezulu abanebhande lebhuloho eligijima phezu kwemishayo yendlela yezindiza, ukhreni webhuloho olengayo unobhande lebhuloho eligijima ngaphansi kwemishayo yendlela yezindiza. Nansi eminye imininingwane nezici zama-cranes angaphansi kwebhuloho:
Ukucushwa: Ama-cranes amabhuloho angaphansi kwe-hung ngokuvamile ahlanganisa ibhande lebhuloho, amaloli okugcina, ukuhlangana kwe-hoist/trolley, kanye nesistimu ye-runway. Ibhande lebhuloho, elithwala i-hoist kanye ne-trolley, lifakwe emaphethelweni aphansi emishayo ye-runway.
I-Runway System: Isistimu ye-runway igxunyekwe esakhiweni sebhilidi futhi inikeza indlela yokuthi u-crane uhambe uvundlile. Iqukethe ipheya yemishayo yezindiza ehambisanayo esekela ibhande lebhuloho. Imishayo yomzila wendiza ngokuvamile imiswa esakhiweni sesakhiwo kusetshenziswa ama-hangers noma abakaki.
I-Bridge Girder: Ibhande lebhuloho liwuhlaka oluvundlile oluvula igebe phakathi kwemishayo yemigwaqo yezindiza. Ihamba eduze kwesistimu ye-runway isebenzisa amasondo noma ama-roller afakwe emalolini asekupheleni. Ibhande lebhuloho lisekela i-hoist kanye ne-trolley assembly, ehamba ngobude bebhande lebhuloho.
I-Hoist and Trolley Assembly: Umhlangano we-hoist kanye ne-trolley unomthwalo wemfanelo wokuphakamisa nokuhambisa imithwalo. Iqukethe i-hoist kagesi noma eyenziwa ngesandla efakwe ku-trolley. I-trolley ihamba eduze kwebhande lebhuloho, ivumela i-hoist ukuthi imise futhi ihambise imithwalo endaweni yokusebenza.
Ukuvumelana nezimo: Okhreyini bebhuloho abangaphansi kwe-Underhung banikeza ukuguquguquka ngokuya ngokufakwa nokusetshenziswa. Zivame ukusetshenziswa ezindaweni lapho i-headroom ilinganiselwe noma lapho izakhiwo ezikhona zingakwazi ukusekela isisindo se-crane ephezulu yendabuko. Ama-cranes ahung angafakwa ezakhiweni ezintsha noma afakwe kabusha ezakhiweni ezikhona.
Izinsiza Zokukhiqiza: Okhreyini abangaphansi kwe-Underhung bavame ukusetshenziswa ezindaweni zokukhiqiza ukuhambisa izinto ezingavuthiwe, izingxenye, kanye nemikhiqizo eqediwe emigqeni yokuhlanganisa. Banika amandla ukubekwa kahle nokunemba kwemishini esindayo, amathuluzi, kanye nemishini ngesikhathi sezinqubo zokukhiqiza.
Izikhungo Nezindawo Zokusabalalisa: Okhreyini abangaphansi kwe-Underhung baqashwa ezindaweni zokugcina izimpahla nasezikhungweni zokusabalalisa ukuze kuphathwe futhi kuthuthwe izimpahla, amaphalethi, neziqukathi. Benza lula ukuhamba kwemikhiqizo ezindaweni zokugcina, ukulayisha nokuthulula amaloli, nokuhlela i-inventory.
Imboni Yezimoto: O-Underhung cranes badlala indima ebalulekile embonini yezimoto. Asetshenziselwa imisebenzi efana nokuphakamisa nokubeka imizimba yezimoto ngesikhathi sokuhlangana, ukuhambisa izingxenye zezimoto ezinzima emigqeni yokukhiqiza, kanye nokulayisha/ukukhipha impahla emalolini.
Imboni ye-Aerospace: Embonini ye-aerospace, ama-cranes angaphansi asetshenziselwa ukuphatha nokuhlanganisa izingxenye ezinkulu zendiza, njengamaphiko nama-fuselage. Zisiza ekumisweni okunembile nasekunyakazeni kwalezi zingxenye ezinzima nezithambile, ziqinisekisa izinqubo zokukhiqiza ezisebenza kahle.
I-Metal Fabrication: Ama-cranes angaphansi kwe-Underhung avame ukutholakala ezindaweni zokwenziwa kwensimbi. Asetshenziselwa ukuphatha nokuthutha amashidi ensimbi esindayo, imishayo, nezinye izakhi zesakhiwo. Ama-cranes angaphansi kwe-Underhung ahlinzeka ngomthamo odingekayo wokuphakamisa kanye nokusebenza kahle kwemisebenzi eyahlukene yokwenziwa, okuhlanganisa ukushisela, ukusika, nokwenza imisebenzi.
Ama-cranes angaphezulu alengayo athola ukusetshenziswa ezimbonini eziningi nasezindaweni lapho kudingeka khona ukuphatha okusebenzayo nokuphakamisa imisebenzi.Ukuguquguquka kwawo okuhlukahlukene, umthamo womthwalo, nokuguquguquka kwawo kuwenza abe yimpahla ebalulekile ezimbonini eziningi lapho ukuphatha okusebenzayo nokuphakamisa imisebenzi kubalulekile.