Steel pipe framed bent trolley for secondary lining of tunnel widening section

• Main Authors: JIANG DAIBING, ZHAO SILI, ZHANG DONGYUN, XIAO XIAOWEI, LIU XIANCHENG, DU BAORONG, GAO WENJU, HAN WEIGANG, YANG KUN, WANG LIANG, MA WEI, LIU SHIYU
• Format: Patent
• Language: Chinese; English
• Published: 16.08.2022
• Subjects: EARTH DRILLING; FIXED CONSTRUCTIONS; GALLERIES; LARGE UNDERGROUND CHAMBERS; MINING; SHAFTS; TUNNELS

The utility model relates to a steel pipe framed bent trolley for secondary lining of a tunnel widening section, and belongs to the technical field of expressway tunnel construction. Comprising a trolley, limiting steel bars, vertical pipes, transverse pipes, diagonal bracings, a portal, a formwork, a jack and a steel stool, the limiting steel bars are evenly and vertically welded and fixed to the trolley, the vertical pipes are vertically inserted into the limiting steel bars to be limited, the transverse pipes are erected layer by layer, the transverse pipes on all layers are pulled, connected and fixed through the diagonal bracings, and the portal is supported and fixed to the lower portion of a tunnel arch through the vertical pipes. The template is supported and fixed through the vertical pipe, the transverse pipe and the portal frame; the jack and the steel stool are arranged at the bottom of the trolley; overall or local transition, movement and auxiliary supporting of the equipment are achieved throug