I-box girder cranes isiyingxenye ebalulekile ekwakhiweni kwensimbi yesimanje.Zenzelwe ukuphakamisa nokuhambisa imithwalo emikhulu esindayo endaweni yokwakha, inikeze isisombululo esinokwethenjelwa nesisebenzayo ekuphatheni izinto ezibonakalayo.
Enye yezinzuzo ezinkulu zama-box girder cranes amandla abo okuhambisa imithwalo ngendlela elawulwayo nenembayo.Lokhu kuwusizo ikakhulukazi lapho usebenza kumaphrojekthi engqalasizinda amakhulu lapho ukuphepha kubaluleke kakhulu.Abaqhubi be-crane bangakwazi ukulawula ukunyakaza kwe-crane kalula, baqinisekise ukuthi imithwalo iyakhushulwa futhi ihanjiswa ngokuphepha kanye nengozi encane yezingozi.
Ama-cranes ama-box girder nawo ahlala isikhathi eside ngendlela emangalisayo futhi akhelwe ukumelana nezimo ezingezinhle zangaphandle zesiza sokwakha.Zenziwe ngezinto eziqinile, ezisindayo, ezinikeza isikhathi eside sokuphila.Lokhu kusho ukuthi zingasetshenziswa isikhathi nesikhathi ezindaweni zokwakha iminyaka eminingi ezayo.
Enye inzuzo yama-cranes e-box girder ukuguquguquka kwawo.Zifanele izicelo ezihlukahlukene zokuphakamisa, kusukela ekuhambiseni amaphaneli okhonkolo we-precast kuya emishayweni yensimbi nezinye izinto ezisetshenziswa ekwakhiweni kwesakhiwo sensimbi.Zingalungiswa ukuze zivumelane nezidingo ezithile zephrojekthi, kuqinisekiswe ukuthi i-crane ifanele injongo futhi iyakwazi ukuphatha imithwalo edingekayo.
Ngaphezu kwalokho, ama-box girder cranes aziwa ngesivinini nokusebenza kahle kwawo ekuyiseni izinto zokwakha endaweni ezihlosiwe.Bangakwazi ukuthutha imithwalo esindayo ngokushesha nangokuphepha ukusuka kolunye uhlangothi lwendawo yokwakha ukuya kolunye, okungasindisa isikhathi nemali yephrojekthi.Lokhu kubaluleke kakhulu kumaphrojekthi wokwakha amakhulu, lapho ukubambezeleka kungaba nemiphumela emibi kakhulu esabelweni sezimali sephrojekthi kanye nomugqa wesikhathi.
Sengiphetha, ama-box girder cranes ayithuluzi elibalulekile kumaphrojekthi wokwakha insimbi.Ukunemba kwazo, ukuqina, ukuguquguquka, nokusebenza kahle kwazo kuzenza zilungele ukusingatha imithwalo esindayo ezindaweni zokwakha.Lokhu kubangela izimo zokusebenza eziphephile, izikhathi zokushintsha ngokushesha, kanye nomsebenzi wokwakha ongabizi kakhulu usuwonke.
