Li-Girders le Liframe tsa gantry crane tse habeli-beam ke meaho e kopantsoeng ka mokhoa o cheseletseng e se nang manonyello a moroko, e nang le boemo bo phahameng ba ho tiea le ho satalla ho ea holimo. Mochine o tsamaeang oa trolley o khannoa ke motlakase, crane ea gantry e habeli-beam e ka hlomelloa ka li-grapples le lisebelisoa tse ling tsa ho phahamisa lijana, tse loketseng ts'ebeliso e fapaneng.
Bokhoni ba ho phahamisa ba gantry crane e nang le marako a mabeli e ka ba lithane tse makholo, 'me e sebelisoa haholo libakeng tsa polokelo tse bulehileng, libaka tsa polokelo ea thepa, limela tsa samente, liindasteri tsa granite, liindasteri tsa kaho, liindasteri tsa boenjiniere, lijarete tsa terene bakeng sa ho laolla le ho laolla. thepa. Double beam gantry crane e sebelisoa haholo ho phahamisa mosebetsi o boima.
Double beam gantry crane li bobebe ebile lia nkeha, li sebelisa maoto ho tšoara marokho, letjeketjane le lifti. Meralong e tsoetseng pele, li-crane tsa gantry tse peli-girder li ka 'na tsa lumella sebaka se phahameng sa ho phahamisa hobane seketsoana se fanyehiloe ka tlas'a sefate. Ha li hloke lisebelisoa tse eketsehileng bakeng sa maballo a borokho le litsamaiso tsa litsela tsa lifofane, kahoo maoto a tšehetso ea mohaho a tlameha ho ba hlokolosi haholoanyane. Double beam gantry crane e boetse e nahanoa moo ho nang le lebaka la ho se kenyelletse tsamaiso ea litsela tse marulelong, 'me ka tloaelo e sebelisoa bakeng sa lits'ebetso tse bulehileng moo maballo le litšiea tse felletseng li ke keng tsa kenngoa, kapa li ka sebelisoa tlas'a moqhaka o teng oa borokho. tsamaiso.
Li-cranes tse nang le li-girder tse peli hangata li hloka sebaka se seholoanyane ho feta li-cranes tse holimo holimo, ha trolley e palame holim'a maballo a borokho holim'a krene. Sebopeho sa motheo sa "double beam gantry crane" ke hore maoto le mabili a tsamaea ka bolelele ba tsamaiso ea maballo a fatše, ka li-girders tse peli tse tsitsitseng maotong, 'me trolley ea hoist e emisa li-boom le ho tsamaea holim'a li-girders.