Ukhreni ohamba phezulu ohamba phezulu unomzila wesitimela ongashintshi noma isistimu yamathrekhi efakwe phezulu komugqa ngamunye kumzila wezindiza - lokhu kuvumela amaloli okugcina ukuthutha amabhuloho kanye namakheshi awela phezulu kwesistimu yendiza. Okhreni abagijima phezulu abagijima phezulu bagijima kumathrekhi phezu kwemishayo yezindiza, ngaleyo ndlela banikeze ukuphakama okukhulu emabhilidini akhawulelwe ubude.
I-Top Running Overhead Crane iyinketho efanelekile yesevisi enesisindo esimaphakathi, futhi ivame ukusetshenziswa ezitshalweni zensimbi, izikhungo, izitolo zemishini esindayo, izigayo ze-pulp, izitshalo zokuphonsa, njll. I-Top Running Overhead Crane inikeza ukuphakama okuphezulu okungaba khona esakhiweni, njengoba ama-hoist kanye nezinqola zinqamula phezulu kwebhande. Ngaphansi kwama-cranes agijimayo ahlinzeka ngokuguquguquka, amandla, kanye nezixazululo ze-ergonomic, kanti amasistimu we-crane asebenza phezulu ahlinzeka ngezinzuzo zokuphakama okuphezulu kanye nesikhala esikhulu ngaphezulu.
Ama-cranes ahamba phezulu aklanyelwe ukunqamula phezu kwesistimu ye-runway, esekelwa kusukela kumakholomu esakhiwo noma amakholomu wokwakha. Onjiniyela be-SEVENVRANE futhi bakha zonke izinhlobo zokucushwa kwe-crane yebhuloho elingaphezulu okuhlanganisa (kodwa kungagcini lapho) i-double-girder crane noma i-single-girder crane, engafakwa njengezixazululo ezihamba phezulu noma ezingezansi. Ama-cranes ahamba phezulu angalungiswa njengemiklamo yebhuloho elilodwa noma elikabili futhi alungele ukuhambisa imithwalo esinda kakhulu.
Okhreni abagijima phezulu abahamba phezu kwebhuloho, kanye nama-cranes ahamba phezulu aphansi abuyela emuva. Ama-cranes angaphezulu alengayo asetshenziswa ezinsizeni ezilula, njengokukhiqiza okulula, imigqa yokuhlanganisa elula, njll., kuyilapho ama-cranes ahamba phezulu ngaphezu kwebhuloho evamise ukusetshenziswa kumasevisi asindayo, njengama-Foundries, izitshalo ezinkulu zokukhiqiza, nezitshalo zokugxiviza.