Gantry yoyambira imagwira ntchito pa msewu waukulu, milatho ya sitima kupita kumalo omangira mlatho, ntchito yake yayikulu ndikutchula chidutswa chabwino cha mtengo wokonzedwa kale komanso choperekedwa pa mapiri abwino okonzedwa kale. Ndipo tanthauzo lalikulu ndilakuti ma cranes ali ndi zofunikira zazikulu zosiyana, zotetezeka kwambiri.
Gantry yoyambira inali ndi beam yaikulu, cantilever, under guide beam, miyendo yakutsogolo ndi yakumbuyo, assistant outrigger, hanging beam crane, cantilever crane ndi elecrto-hydraulic system. Imagwira ntchito pa ma span atatu osiyana okhala ndi beam erection yokhazikika, yokhala ndi magwiridwe antchito apamwamba.
Gantry yoyambira imagwiritsidwa ntchito kwambiri pakupanga misewu ikuluikulu ndi njanji Makina awa amagwiritsidwa ntchito poyimika ma girders a konkriti kuti azitha kuyenda mofulumira kwambiri (250km, 350km) pa sitima yapamtunda. Makinawa ndi oyenera ma girders ofanana kapena ma girders osiyanasiyana omwe amatha kukhala 20m, 24m ndi 32m, 50m. Gawo lakumbuyo lili ndi zothandizira ziwiri. Chimodzi mwa zothandizira ndi "C" mawonekedwe a mzati wokhala ndi ukadaulo wozungulira komanso wopindika. Ukadaulo wa "C" mawonekedwe a mzati unasunga malo odutsa paulendo ndipo umathandiza kuyenda kudzera m'matanthwe ndi galimoto yotumizira girder.
Mphamvu: 50-250T
Kutalika: 30-60M
Kukweza kutalika: 5.5M-11m
Kalasi Yogwira Ntchito: A3
Mphamvu: 30-100T
Kutalika: 35M
Kukweza kutalika: 15-20M
Kalasi Yogwira Ntchito: A5-A8
Mphamvu: 10-325T
Kutalika: 30-65M
Kukweza kutalika: 8-35M
Kalasi Yogwira Ntchito: A3-A6
Kuthekera: 50-200 tani kapena zofunikira za makasitomala
Utali wa girder: 35m-55m
Mtundu wa girder: Mtundu wa T girder, Mtundu wa I girder, Mtundu wa U girder
Mphamvu: Jenereta ya dizilo
Kutha: tani 1-150
Utali: 2000mm-10000mm
Kulemera: 1500mm-3000mm
Kutalika kwa Plaform: 450mm 600mm 800mm 1200mm
Liwiro loyenda: 0-25m/mph
Kutha: 2-150ton
Utali: 2000mm-10000mm
Kulemera: 1500mm-3000mm
Kutalika kwa Plaform: 450mm 600mm 800mm 1200mm
Liwiro loyenda: 18m/mphindi kapena 25m/mphindi
Imagwiritsidwa ntchito m'madera ambiri
Kukhutiritsa chisankho cha ogwiritsa ntchito pansi pa mikhalidwe yosiyana.
Kagwiritsidwe: kamagwiritsidwa ntchito m'mafakitale, m'nyumba yosungiramo katundu, m'masitolo osungiramo katundu, kuti akwaniritse ntchito yokweza katundu tsiku ndi tsiku.
NTHAWI YOPANGIDWA NDI KUTUMIZA
Tili ndi chitetezo chokwanira pakupanga zinthu komanso ogwira ntchito odziwa bwino ntchito kuti titsimikizire kuti zinthuzo zafika nthawi yake kapena msanga.
Mphamvu zaukadaulo.
Mphamvu ya fakitale.
Zaka zambiri zokumana nazo.
Malo ndi okwanira.
Masiku 10-15
Masiku 15-25
Masiku 30-40
Masiku 30-40
Masiku 30-35
Ndi National Station kutumiza bokosi la plywood lokhazikika, pallet yamatabwa mu chidebe cha 20ft ndi 40ft. Kapena malinga ndi zomwe mukufuna.