Automatic paint spraying device capable of achieving uniform spraying and used for GIS shell

The invention discloses a uniform-spraying automatic paint spraying device for a GIS shell, and relates to the technical field of GIS shell surface paint spraying, the uniform-spraying automatic paint spraying device for the GIS shell comprises a main body, sliding rails and a paint spraying component, a supporting component, a cleaning component and the paint spraying component are arranged in the main body, and the supporting component is internally provided with a plurality of sets of sliding rails; the cleaning component and the paint spraying component are connected with the supporting component through a sliding rail, a plurality of sets of driving wheels are arranged in the supporting component, the annularly-distributed driving wheels form a set, and the supporting component is connected with a workpiece through the driving wheels. Before the workpiece is painted, the surface of the workpiece is treated, the rusted part and the protruding area of the surface of the workpiece are polished, and after th