Crane Yambiri Yokwera Kwambirindi crane ya mlatho yoyenera kugwira ntchito zamkati kapena zakunja, ndipo imagwiritsidwa ntchito kwambiri ponyamula ndi kunyamula zinthu zosiyanasiyana zolemetsa. Mapangidwe ake olimba komanso okhazikika amakhala oyenera makamaka kumalo ogwirira ntchito omwe amafunikira kuyika bwino komanso kusonkhana kolemera.
Poyerekeza ndi mtengo umodzimlathocranes,ma cranes awiri okwera pamwambakukhala ndi dongosolo lamphamvu, mphamvu yonyamula katundu, ndipo ndi yotetezeka kugwiritsa ntchito. Chifukwa chake, mphamvu zake zokweza ndizokulirapo, ndipo zimatha kunyamula zinthu zolemetsa kuyambira matani atatu mpaka matani 50. Kutalika kwake kumatha kusinthidwa malinga ndi zosowa zenizeni, kuyambira 10.5 metres mpaka 31.5 metres, ndipo kutalika kwake kumachokera ku 6 metres mpaka 30 metres, zomwe zimatha kukwaniritsa zosowa zosiyanasiyana zogwirira ntchito. Mtengo wa crane wokwera pawiri umakhudzidwa ndi zinthu monga kuchuluka kwa katundu, kutalika kwake, ndi mawonekedwe ake, zomwe zimapangitsa kuti zikhale kofunika kupeza kuyerekezera kolondola.
Njira yogwirira ntchito ya crane imatha kusankhidwa molingana ndi momwe malowa alili, kuphatikiza ntchito yapansi, ntchito yakutali, ndi kabati. Popeza ma cranes okwera pama girder awiri nthawi zambiri amakhala ndi zotalikirapo zazikulu, zokwezera zazikulu, komanso kukwera kokwezeka, ntchito yama cab nthawi zambiri imakonda kuwonetsetsa bata ndi chitetezo chantchitoyo.
Thedouble girder eot cranendizoyenera makamaka kumalo ogwirira ntchito omwe amafunikira kuyika bwino komanso kuphatikiza zigawo zazikulu. Mphamvu zake zonyamula katundu komanso ntchito zambiri zimapangitsa kuti ikhale chida chofunikira komanso chofunikira m'mafakitale osiyanasiyana. Kaya m'mashopu opangira makina olemera, zopangira zitsulo, kapena ma workshop opanga zamagetsi omwe amafunikira magwiridwe antchito apamwamba kwambiri, amatha kupereka magwiridwe antchito komanso kudalirika.
Posankha double girder eot crane, ogwiritsa ntchito amatha kusintha kwambiri magwiridwe antchito azinthu ndikuwonetsetsa chitetezo cha ntchito. Njira zake zingapo zogwirira ntchito, mphamvu zonyamula katundu wamphamvu komanso kapangidwe kake kosinthika zimapangitsa kuti ikhale chida chonyamulira chomwe chimakondedwa m'mafakitale ambiri. Kukambirana ndiMtengo wa Crane wa Double girderzitha kubweretsa ndalama zambiri, makamaka pogula zinthu zambiri kapena ntchito zazikulu.
