Reinforcing mechanism and pre-positioning device for water gate construction

The utility model relates to the technical field of water gate construction, in particular to a reinforcing mechanism and a pre-positioning device for water gate construction. The device comprises two U-shaped pre-positioning plates, a telescopic connecting rod and reinforcing mechanisms, the reinforcing mechanisms are located on the two sides of the two U-shaped pre-positioning plates, T-shaped grooves are formed in the upper end faces of the two U-shaped pre-positioning plates, T-shaped sliding blocks are arranged in the two T-shaped grooves in a penetrating and inserting mode, and the telescopic connecting rod is located between the two T-shaped sliding blocks. The two U-shaped pre-positioning plates are matched with the telescopic connecting rod, a rectangular pre-mounting notch is formed in a ditch, so that pre-positioning is performed on water gate mounting, meanwhile, the reinforcing assemblies and the limiting assemblies are arranged, and in the pre-positioning process, the ground nails are driven to