Steel structure rust removal device

A steel structure derusting device belongs to the technical field of steel plate processing equipment. The device comprises a base, supporting columns are arranged at the four end corners of the top end of the base. A top plate is arranged above the supporting columns; a box is fixedly mounted at the top end of the top plate; a first motor bracket is fixedly mounted on the inner wall of the frontside of the box body; a first driving motor is mounted on the first motor bracket; the output end of the first driving motor is connected with a first screw rod; the side, away from the first drive motor, of the first screw is movably connected with the inner wall of the rear side of the box. The outer surface of the first screw is in threaded connection with a first sliding sleeve, a sliding rodis fixedly installed at the top end of the first sliding sleeve, a pulley is installed on the side, away from the first sliding sleeve, of the sliding rod, a first sliding groove matched with the pulley is formed in the top wa