Supporting leg structure of road bridge girder erection machine

The utility model discloses a road bridge girder erection machine landing leg structure, which relates to the technical field of road bridge girder erection machines, and comprises a grounding plate, a fixed column is arranged at the middle position of the top end of the grounding plate, a threaded rod is arranged at the bottom end in the fixed column through a bolt, a sealing rubber ring is arranged on the inner wall of the fixed column, and a top plate is arranged at the top end of the fixed column. A mounting plate is arranged at the top end of the top plate. Through the arrangement of the vertical rods, when the device is supported on the ground, the height of the movable plate can be adjusted by utilizing the connection relation between the movable plate and the sleeve and adjusting the height of the sleeve, so that the movable plate can be stably supported on the ground of different terrains, and the stability of the device can be improved; the device can adapt to different terrains, and due to the fact