Municipal road bridge construction indicating frame

The municipal road bridge construction indicating frame comprises a base and a movable rod, the upper end of the base is rotationally connected with the movable rod through a pin shaft, supporting rods are fixedly connected to the two sides of the movable rod, clamping plates are fixedly connected to the ends, away from the movable rod, of the supporting rods, and a clamping opening is formed in the upper end of the movable rod; an indicating plate is inserted into the clamping plate and the movable rod, a sliding cavity opening is formed in one side of the movable rod, and a shifting mechanism is installed between the base and the movable rod. The worm and the worm gear are driven to rotate through the low-speed motor, the worm gear drives the rotary disc to rotate, when the rotary disc rotates, the shifting pin continuously shifts the movable rod, so that the movable rod continuously swings back and forth, the movable rod drives the indicating plate to continuously swing back and forth, and the indicating p