Ma crane a gantry ndi ma cranes apamwamba ndi zida zofunika m'mafakitale ambiri, kuyambira pakumanga ndi kupanga, kupita kumayendedwe ndi zinthu.Ma craneswa amagwiritsidwa ntchito kukweza ndi kusuntha zinthu zolemera, zomwe zimapangitsa kuti zikhale zofunikira kuti zigwire bwino ntchito komanso motetezeka.Bokosi girder mapangidwe ndi imodzi mwazosankha zodziwika bwino zomanga gantry ndicranes pamwamba.Kapangidwe kameneka kamapereka maubwino ambiri, kuphatikiza kukhazikika, kuchuluka kwa katundu, komanso kukhazikika bwino.
Chimodzi mwazabwino za kapangidwe ka bokosi la girder ndikuti limapereka kukhazikika kwakukulu kuposa mapangidwe ena.Maonekedwe a bokosi amapereka dongosolo lolimba, lomwe silimakonda kupindika pansi pa katundu.Kukhazikika kumeneku ndikofunikira kwa ma cranes, chifukwa amathandizira kuti athe kunyamula ndikusuntha zinthu zolemetsa mosamala komanso molondola.Kuonjezera apo, mapangidwe a girder a bokosi amalola kuti aziyenda bwino kwambiri, chifukwa amachepetsa mwayi wa kugwedezeka kosafunika kapena kugwedezeka.
Ubwino wina wa kapangidwe ka bokosi la girder ndi kuchuluka kwake kolemetsa.Izi ndichifukwa choti kapangidwe kake kamapereka chithandizo chokhazikika, ndikupangitsa kuti izitha kunyamula katundu wolemera mosavuta.Ndi mapangidwe a girder box, crane imatha kukweza zinthu zazikulu popanda chiwopsezo cha kulephera kwadongosolo.Izi ndizofunikira kuti mafakitale omwe amafuna kuti zida zolemera zizisuntha pafupipafupi, chifukwa zimathandiza kuonetsetsa kuti ntchito zikuyenda bwino komanso moyenera.
Pomaliza, mapangidwe a girder a box girder amapereka kukhazikika bwino kuposa mapangidwe ena.Izi ndichifukwa choti mawonekedwe a bokosi amapereka chitetezo chozungulira chamkati mwa crane, chomwe chimathandiza kupewa kuwonongeka kwa zinthu zakunja.Kukhalitsa kumeneku ndikofunikira makamaka kwa ma crane okwera ndi okwera omwe amakumana ndi malo ovuta, monga omwe amapezeka kumalo omangira, malo opangira zinthu, ndi mosungiramo zinthu.
Mwachidule, mapangidwe a girder bokosi ndi chisankho chabwino kwambiri pomanga ma gantry ndi ma cranes apamwamba.Ubwino wake ndi kukhazikika kwakukulu, kuchuluka kwa katundu, komanso kukhazikika bwino.Ndi zinthu izi, mapangidwe a girder a bokosi amatsimikizira kuti ma crane a gantry ndi apamwamba amatha kukweza ndi kusuntha zinthu zolemetsa mosamala komanso moyenera.
Nthawi yotumiza: Jul-31-2023
