The company currently has a huge workload in installing and constructing rudder blades for Roll-on ships, designed and made a special equipment for rolling ship rudder blade installation. The device is reasonable in design, simple in operation, reusable, low overall structure of mobile platform, rudder blade can be moved to the stern installation site through mobile platform for installation and construction., reduce a lot of scaffolding construction work and a lot of temporary lifting code welding and removal work, installation of electric small crane on the construction platform to reduce a lot of up and down handling work, installation of movable flipboard for easy walking. The application of this device can meet the high quality requirements of the installation of the rudder blades, reduce the labor intensity of the installation work and shorten the installation period.