Temporary inverted arch for tunnel

The utility model relates to the technical field of tunnel construction devices, in particular to a temporary inverted arch for a tunnel. The device can avoid dragging of the primary support when the temporary inverted arch sinks due to rolling, meanwhile, the first connecting mechanism is provided with an automatic adjusting device, and when the automatic adjusting device detects that the first connecting mechanism is in discontinuous contact with a main body of the temporary inverted arch, the electric hydraulic cylinder is controlled to stretch, so that the temporary inverted arch is supported. The supporting effect of the temporary inverted arch is further achieved; the device is provided with the second connecting mechanism which can be adjusted to be at different angles, so that the device is suitable for different application scenes, and the device can be recycled; according to the temporary inverted arch, traditional I-shaped steel is replaced with the steel pipes, a large amount of labor cost and raw