Spraying covering tool

The utility model discloses a spraying covering tool which comprises a shielding cover, the upper side of the shielding cover is fixedly connected with a fixing rod, the upper side of the fixing rod is fixedly connected with a top ring, the outer side of the shielding cover is provided with a plurality of sliding grooves, the inner sides of the sliding grooves are connected with sliding blocks in a sliding mode, and the sliding blocks are arranged in the sliding grooves. A first electric push rod is fixedly connected between the sliding block and the top ring, an adjusting unit is arranged on the outer side of the sliding block, a stabilizing unit is arranged on the outer side of the adjusting unit, the adjusting unit comprises a shielding ring, and the shielding ring is arranged on the outer side of the sliding block. By arranging a shielding cover, a sliding groove, a sliding block, a first electric push rod and a shielding ring, brake discs with different thicknesses can be shielded by controlling the shie