Iikhreyini ezingaphezulu zingumatshini obalulekileyo kumashishini amaninzi, kubandakanya neshishini lokugaya iphepha.Iimveliso zephepha zifuna ukunyuswa ngokuchanekileyo kunye nokuhamba kwemithwalo enzima kuyo yonke inkqubo yokuvelisa, ukusuka kwizinto eziluhlaza ukuya kwiimveliso ezigqityiweyo.ISIXHENXE se-crane esiphezu kwentloko sibonelela ngesisombululo esisiso sokuphakamisa ii-mill zephepha.
Okokuqala,iikhreyini eziphezuluzibonelela ngokhuseleko olwandisiweyo, oluyeyona nto iphambili kuyo nayiphi na indawo yokuvelisa.Ezi cranes zenzelwe ukuphakamisa nokuthutha izinto ezinzima, ukuqinisekisa ukuba umthwalo uphakanyiswe ngokukhuselekileyo nangokukhuselekileyo.Ngaphaya koko, iicranes ezingaphezulu zinokuthwala imithwalo emikhulu enokuba nzima okanye engenakwenzeka ukuba abantu bayiphakamise, ukunciphisa umngcipheko wokwenzakala kubasebenzi.
Okwesibini, iikhreyini ezingaphezulu ziyakwazi ukwenziwa ngokwezifiso, nto leyo ezenza zilungele ukusetyenziswa kumatshini wokugaya amaphepha.Uyilo lwe-crane lunokulungelelaniswa ngokulula ukuhlangabezana neemfuno ezithile zoshishino, kubandakanywa nokuphathwa kwezinto ezinzima okanye ukuveliswa kwevolumu ephezulu.Olu phawu luqinisekisa ukuba ii-mills zephepha zinokudibanisa ngokulula ii-cranes eziphezulu kwiinkqubo zabo zokuvelisa, ukwandisa ukusebenza kakuhle.
Okwesithathu, ii-cranes eziphezulu zivumela abaqhubi bezityalo ukuba baphathe izinto ngokufanelekileyo kwaye ngokukhawuleza, ukwandisa umthamo wemveliso.Ezi cranes ziyakwazi ukuphakamisa, ukuhambisa okanye ukubeka imithwalo enzima okanye enzima ngendlela engenamthungo nefanelekileyo, kunye nokuphazamiseka okuncinci kwinkqubo yokuvelisa.Oku kusebenza kakuhle kwandisa imveliso kushishino lokusila amaphepha, nto leyo evumela ukuba kuveliswe iimveliso zephepha ezininzi ngexeshana elifutshane.
Okokugqibela,iikhreyini eziphezulubomelele kwaye bomelele ngoomatshini.Ziyakwazi ukumelana neendawo zokusebenza ezinzima kwaye zingasetyenziselwa ukuphakamisa nokuthutha izinto ezinobunzima beetoni ezininzi.Iikhreyini nazo zinokusebenza ngokuqhubekayo ngaphandle kokutshisa okanye ukuphuka - into ebalulekileyo kwishishini lephepha lokusila lephepha elirhabaxa kunye ne-tumble.
