Gantry type supporting main beam special for tunnel lifting

A gantry type supporting main beam special for tunnel lifting comprises two spaced bearing beams, and a connecting beam is fixed between the two bearing beams. Each bearing beam comprises a horizontal part, inclined parts matched with a tunnel in shape are arranged at the two ends of each horizontal part, a plurality of spaced cantilever beams are fixed to the top of each horizontal part, trolley running rails parallel to the bearing beams are arranged on the outer sides of the two bearing beams, and electric hoists are installed on the trolley running rails. The two ends of the cantilever beam extend out of the horizontal part and are fixed to the tops of the corresponding trolley running rails. The tunnel lifting device adapts to the shape of a tunnel, the space in the tunnel is reasonably utilized, and the lifting height is conveniently increased. 一种隧道提升专用龙门式支承主梁，包括两根间隔的承载梁，两承载梁之间固定有连接梁；承载梁包括水平部，水平部的两端设有与隧道形状相适应的倾斜部，水平部的顶部固定有若干个间隔的悬臂梁，两承载梁的外侧均设有与承载梁平行的小车运行轨道，小车运行轨道上安装有电动葫芦，悬臂梁的两端延伸至水平部外并固定在对应的小车运行轨道的顶部。本实用