Harbor Rtg Kwantenan Kwantena na 20' 40' 45'

Roba-tyre gantry cranes, wanda aka fi sani da RTGs a takaice, ana amfani da su don tara kwantena a cikin yadudduka. Har ila yau ana kiransa a matsayin mai canja wurin kwantena, ana iya taƙaita shi da crane na RTG, wanda ke amfani da tayoyin robar don tafiya a kan yadudduka na kaya, injin gantry ne na hannu wanda aka saba amfani dashi don tara kwantena, docks, da sauran wurare. Krane na RTG na wayar hannu robar tyred gantry crane, yawanci ana amfani dashi ta tsarin janareta na diesel ko wata na'urar samar da wutar lantarki, kuma shine mafita mai kyau don ɗaukar kwantena masu matsakaicin girman.
kwandon rtg yana ba da gagarumin aiki da aminci a cikin kwantena masu tarawa. Ba wai kawai yawo a kusa da tashar jirgin ruwa ba, kwandon rtg kuma yana ba da izinin sake fasalin kayan aiki da sassauƙan aiki. Kirjin RTG nau'in Universal shine muhimmin yanki na kayan aiki don tashar jirgin ruwa.

Kwantena rtg ya dace da zazzage kwantena biyar-8 da ɗaga tsayi daga sama da kwantena 3-1-over-6. Ana iya ba da cranes mai nau'in roba (RTG) a cikin kewayon girman fuka-fuki daga kwantena biyar zuwa takwas faɗin (da faɗin waƙoƙin manyan motoci), kuma tare da tsayin ɗagawa daga 1 sama da 3 zuwa 1 akan kwantena 6. A cikin hoton da ke sama, karfin roba na roba guda biyu (RTRs) suna aiki da tari.

Manufar kurar gantry sama da kwantena ita ce sanya kwantena a cikin layin tarawa. Automated Rail-mounted Gantry Cranes (ARMGs) sun shahara tun lokacin da aka kafa su a sabbin tashoshi masu ginawa, inda rukunin kwantena na gine-gine daidai da tashar jirgin ruwa suna da fa'ida, kuma wuraren musayar suna a ƙarshen raka'a. Shahararriyar ƙira ta musanya tana amfani da cranes guda biyu iri ɗaya na ARMG a kowane shingen kwantena, suna gudana tare da waƙa ɗaya tare da wurin aiki gama gari (duba adadi 1). Fasahar sarrafa kwantena mai sarrafa kansa ta haɓaka cikin sauri, tare da mayar da hankali ga cranes waɗanda ke sarrafa matsakaicin ajiya na kwantena a cikin yadi.