Pawiri girderpamwamba cranesimatha kunyamula katundu wolemera bwino komanso molondola. Pawiri mpandapamwamba crane imakhala ndi magwiridwe antchito apamwamba, mawonekedwe ophatikizika, kulemera kopepuka, kudalirika ndi magwiridwe antchito, ndipo imatha kukwaniritsa ntchito zosiyanasiyana. Ikhoza kuchepetsa ndalama zonse mufakitale, kupititsa patsogolo ntchito zopanga, kuchepetsa ndalama zolipirira, ndikupulumutsa kugwiritsa ntchito mphamvu zamagetsi.
Mawonekedwe a double girder overhead crane:
Kapangidwe kakang'ono, kukonza kosavuta, kugwiritsa ntchito mphamvu zochepa komanso liwiro lalikulu.
Kuthamanga kwa brake ndikosalala ndipo kumachepetsa kugwedezeka kwa zinthu zolemera, kumachepetsa kugwedezeka kwa katundu, komanso kumathandizira kukweza bwino.
Dcrane yokwera pamwamba pa ouble girder ndi flexible, chosinthika kudzera mumitundu yosiyanasiyana yoyika.
Kusamalira kocheperako, phokoso lotsika molunjika pagalimoto yokhala ndi disc brake ndi centrifugal mass.
Padziko lonse lapansi maukonde ovomerezeka, opanga ma crane ndi omanga makina.
Musanagwiritse ntchitoDouble girder Bridge Crane:
Onetsetsani kuti mwayang'ana zofalitsa zosiyanasiyana musanagwire ntchito. Onetsetsani kuti zofalitsa zili zonse ndi zonse. Ngatiit ili ndi vuto, sizingatheke kugwira ntchito ngati crane.
Yang'anani mkhalidwe wa chingwe. Onetsetsani chingwecha10 matani pamwamba pa crane ndi otetezeka ndipo si omasuka kapena osweka. Ngati mumangirira chinthu ndi m'mphepete, muyenera kuwonjezera chitetezo pakati pa chinthucho ndi chingwe kuti chingwe chisaduke.
Dziwani pakati pa mphamvu yokoka ya kulemera. Izi zitha kupewa kuchitika kwa kukoka kwa diagonal, ndipo zinthu zonyamulira zapadera zimafunikira antchito kuti azigwira ntchito.
Ponyamula zinthu, musathamangire. Onetsetsani kuti mudikire kwakanthawi kuti katunduyo akhazikike musanapitirize. Palibe zinyalala zomwe zimaloledwa pa zinthu zolemera, ndipo palibe amene amaloledwa kuima pamenepo. Litipogwiritsa ntchito 10 toncrane pamwamba to kwezani katundu, ogwira ntchito osayenera saloledwa kudutsa pansi pa chinthucho.
Njira zotetezera ntchito ziyenera kuwongolera. Mwachitsanzo, ogwira ntchito ayenera kuvala zipewa zotetezera, akatswiri ayenera kupereka lamulo logwirizana, ndipo madipatimenti osiyanasiyana ayenera kugwirizanitsa ntchito zawo. Chinthucho chikachotsedwa pansi, fufuzani ngati chingwe cha waya ndi zigawo zina zili zotetezeka. Ngati sizotetezeka, siyani2 girder pamwamba cranekuyendera.
