Small -size convertible steel construction rain cover

The utility model belongs to a small -size convertible steel construction rain cover is aimed at providing in the building construction supporting facility field, and its technical scheme main pointsare including the main part steelframe, set firmly horizontal rotary drum axle on the wall body, lay the rain cover board on the main part steelframe, the main part steelframe includes that two overhung choose, encorbelment, choose the horizontal linking beam of the rigid coupling of encorbelmenting in with overhung in at least one, overhung chooses to encorbelment all to rotate with the horizontal rotary drum axle towards wall body one end in with and is connected, still includes setting be used for overturning on the wall body turning device of main part steelframe, turning device includes that it sets firmly the guide rail on the wall body to follow vertical orientation, and it is equipped with the slider to slide on the guide rail, hinges to have on the slider to be used for carrying the pull rod that draws th