Bridge anti-collision alarm device

The utility model discloses an anti-collision alarm device for a bridge, which relates to the technical field of alarm devices and comprises a guideboard column fixedly mounted at the top of an anti-collision column, and mounting blocks fixedly mounted at two corresponding positions on the outer side of the guideboard column. The guide board comprises a guide board column, a base is installed at the top of the bridge pier, a limiting column is installed at the top of the base, a buffering air wheel is rotationally connected to the outer side of the limiting column, the guide board column is fixedly installed on the base, supporting blocks are fixedly installed on the two corresponding sides of the two installation blocks and located on the two corresponding sides of the guide board column, and a display screen is fixedly installed at one end of the two installation blocks. The fixing blocks are installed at the tops of the buffering air wheels, the anti-collision columns are installed on the two sides of the