Ama-cranes amabhuloho, aziwa nangokuthi ama-cranes angaphezulu, asetshenziswa kakhulu ezimbonini ezahlukahlukene ukuphakamisa nokuhambisa imithwalo esindayo. Amagama amabili abalulekile ahlotshaniswa nama-cranes amabhuloho ubude be-headroom nokuphakama kokuphakamisa.
Ukuphakama kwe-headroom kwe-crane yebhuloho kubhekisela ebangeni eliphakathi kwephansi nephansi le-beam yebhuloho le-crane. Lesi silinganiso sibalulekile njengoba sinquma inani lesikhala esidingekayo ekusebenzeni kwe-crane, kucatshangelwa noma yiziphi izithiyo, njengamapayipi, amapayipi, ama-trusses ophahleni noma izinto zokukhanyisa, ezingase zithiye ukuhamba kwawo. Ubude be-headroom ngokuvamile bungenziwa ngendlela oyifisayo, futhi amakhasimende angacacisa izidingo zawo ngokuya ngezingqinamba zesikhala sendawo yawo.
Ngakolunye uhlangothi, ukuphakama kwe-crane yebhuloho kubhekisela ebangeni i-crane engakwazi ukuphakamisa umthwalo, likalwa ukusuka phansi kuya endaweni ephakeme kakhulu yokuphakamisa. Lobu bude buwukucatshangelwa okubalulekile, ikakhulukazi lapho kudluliselwa izinto zokusebenza noma imikhiqizo ezindaweni ezinamaleveli amaningi, lapho ibanga eliphakeme kakhulu lokuphakamisa i-crane lidlala indima ebalulekile ekunqumeni inani lephansi okufanele ilifti lihambe.
Kubalulekile ukuqonda umehluko phakathi kokuphakama kwe-headroom nokuphakama kokuphakamisaama-cranes ebhuloho, njengoba kungasiza ekukhetheni nasekuklameni okokusebenza okufanela kangcono indawo yokusebenza yekhasimende kanye nezimfuneko.
Ukuphakama kokuphakama kudlala indima ebalulekile ekunqumeni umthamo we-crane ukuthutha impahla endaweni ethile. Ukuphakama kokuphakama kwe-crane kufanele kukhethwe ngokucophelela, futhi kuya ngohlobo lomthwalo kanye nokuma nobukhulu besikhungo. Kubalulekile ukwenza ukukhetha okufanele ngenkathi ucabangela ukuphakama kokuphakamisa, njengoba kungase kuthinte ukusebenza kahle nokukhiqiza kwe-crane.
Sengiphetha, uma kukhulunywa ngama-cranes amabhuloho, ukuphakama kwe-headroom nokuphakama kokuphakama yizici ezimbili ezibalulekile okufanele zicatshangelwe. Ukuhlola kahle nokunquma ngalezi zici kungasiza ekuthuthukiseni ukusebenza kwe-crane yebhuloho, ukunciphisa isikhathi sokuphumula, nokuqinisekisa ukuphepha endaweni.
