Aluminum alloy overpass stairway ramp plate

The utility model discloses an aluminum alloy platform bridge stairway ramp plate which comprises longitudinal beams, pedals, ramp plates and sealing plates, the longitudinal beams are obliquely installed on a platform bridge frame according to the gradient, the pedals arranged in a step mode are installed between the two longitudinal beams, the upper surfaces of the pedals are connected with the ramp plates in a clamped mode, and the ramp plates are fixed through self-tapping screws. Sealing plates can be installed on the two sides of the ramp plate, and the ramp plate and the sealing plates are fixed through countersunk bolts. According to the utility model, not only is the installation convenient, but also a layer of oxidation film is naturally generated on the surface of the aluminum alloy when the aluminum alloy is exposed in the air to play a role in isolation and protection and prevent the outside from corroding the aluminum alloy, and the oxidation film on the surface of the aluminum alloy is more com