Angle steel tower rainproof device

The utility model relates to a rainproof device for an angle steel tower. Including a base, a control cabinet is arranged on one side of the upper portion of the base. A rainproof shutter is arrangedon one side of the control cabinet; a buzzing alarm is arranged on one side of the outer part of the rainproof shutter; one side of the interior of the rainproof shutter is connected with a sleeve through a first fixing support. A screw rod is sleeved with the sleeve; the lower part of the screw rod penetrates through the interior of the supporting seat; a base is connected below the supporting seat; a bevel gear I is arranged at the bottom end of the screw rod; the first bevel gear is connected with a driving motor through a second bevel gear, the upper portion of the screw rod penetrates into the limiting block, the top end of the screw rod is connected into the top plate in an embedded mode, a clamping groove is formed in one side of the top plate, one side of the lower portion of the top plate is connected to