Water gun support for hydraulic engineering desilting

The utility model discloses a hydraulic engineering desilting water gun support, and relates to the technical field of water gun supports, the hydraulic engineering desilting water gun support comprises a mounting frame, sliding rails are symmetrically fixed to the two sides of the top wall of an inner cavity of the mounting frame, a mounting top plate is clamped in inner cavities of the two sliding rails, and first locking assemblies fixed to the mounting top plate are mounted on the bottom walls of the two sliding rails; a first mounting vertical rod is hinged to the bottom wall of the mounting top plate through a hinge shaft, a second mounting vertical rod is fixed to the bottom wall of the first mounting vertical rod, a mounting frame is rotationally connected to the bottom wall of the second mounting vertical rod through a bearing, and a cavity is formed in the mounting frame. The high-pressure water gun is tightly clamped in the cavity by screwing the thread assembly, the first mounting vertical rod is