Lo khreni oyedwa ongaphezulu we-beam u-crane wasendlini ovame ukusetshenziswa ezinkundleni zokucobelelana ngolwazi zezimboni ezehlukene ukuze uphakamise imisebenzi. Iphinde ibizwe ngokuthi i-single girder bridge crane, i-eot crane, i-crane yebhuloho elilodwa le-beam, i-crane ehamba ngogesi engaphezulu, i-top runningbridge crane, i-electric hoist overhead crane, njll.
Umthamo wayo wokuphakamisa ungafinyelela amathani angama-20. Uma ikhasimende lidinga umthamo wokuphakamisa amathani angaphezu kuka-20, ngokuvamile kuyanconywa ukusebenzisa ukhreyini ongaphezulu onamagila amabili.
I-crane ye-overhead ye-beam eyodwa ngokuvamile imiswa phezulu kwendawo yokusebenzela. Idinga isakhiwo sensimbi esizofakwa ngaphakathi kwendawo yokusebenzela, futhi ithrekhi yokuhamba ye-crane yakhiwe esakhiweni sensimbi.
I-crane hoist trolley ihamba iye emuva naphambili ngobude kuthrekhi, futhi i-hoist trolley ihamba iye emuva naphambili ngokuvundlile ku-beam enkulu. Lokhu kwakha indawo yokusebenza engunxande engasebenzisa ngokugcwele indawo engezansi ukuthutha izinto ngaphandle kokuvinjwa izinto ezisetshenziswa phansi. Ukuma kwayo kufana nebhuloho, ngakho-ke ibizwa nangokuthi i-crane yebhuloho.
I-single girder bridge crane yakhiwe izingxenye ezine: ifreyimu yebhuloho, indlela yokuhamba, indlela yokuphakamisa kanye nezingxenye zikagesi. Ivamise ukusebenzisa i-hoist yezintambo noma i-hoist trolley njengendlela yokuphakamisa. Amabhande e-truss ama-single girder eot cranes ahlanganisa amagida ensimbi esigaba esigoqayo esiqinile futhi ama-rails aqondisayo enziwe ngamapuleti ensimbi. Ngokuvamile, umshini webhuloho uvamise ukulawulwa isilawuli kude esingenantambo esiphansi.
Izimo zokusetshenziswa kwe-crane eyodwa ye-overhead crane zibanzi kakhulu, futhi zingasetshenziswa embonini yezindawo zezimboni nezimayini, imboni yensimbi namakhemikhali, ezokuthutha ngololiwe, imisebenzi yedokhi kanye nempahla, imboni yokukhiqiza ejwayelekile, imboni yamaphepha, imboni yensimbi, njll.