Intelligent magnetic type automatic blackboard eraser

An intelligent magnetic type automatic blackboard eraser comprises a magnetic driving mechanism, a vertical reversing structure and a wiping adsorption structure. The magnetic attraction driving mechanism is provided with a driving motor and a fixing frame, the driving motor is connected with the reversing structure, the magnetic attraction device covers the contact face of the outer side of the rolling wheel, the blackboard eraser is attracted to the blackboard through the magnetic attraction device, the blackboard is wiped through the two roller devices, and the rotating directions of the two rollers of the single roller device are opposite, so that the wiping effect is improved. The roller is fixed to the shell, and the driving mechanism provides power for the roller through the conveying belt. The three buttons on the shell correspond to large, medium and small wiping ranges so as to meet the requirements under different conditions. After the range is selected, the blackboard eraser wipes a rectangular ar