Movable connecting device for steel arch

The utility model relates to the technical field of tunnel construction, in particular to a steel arch frame movable connecting device which comprises a base, a plurality of vertical plates are fixedly installed on the top of the base and evenly distributed on the base, telescopic sleeve plates are connected to the inner sides of the vertical plates in an inserted mode, lifting assemblies are installed on the inner sides of the vertical plates, and the telescopic sleeve plates are connected with the lifting assemblies in an inserted mode. The output ends of the lifting assemblies are fixedly connected with the corresponding telescopic sleeve plates, and the mounting assemblies are mounted at the top ends of the telescopic sleeve plates so that the steel arch can be mounted. The installation mode is more convenient to operate, and the construction progress can be greatly improved. 本实用新型涉及隧道施工技术领域，尤其是一种钢拱架活动连接装置，包括底座，底座的顶部固定安装有若干竖向板，若干竖向板均匀分布在底座上，若干竖向板的内侧均插接有伸缩套板，若干竖向板内侧均安装有升降组件，升降组件的输出端与相应的伸缩套板固定连接，伸缩套板的顶端安装有安