Automatic cleaning device for photovoltaic panel

The invention relates to a cleaning device, in particular to an automatic cleaning device for a photovoltaic panel. The automatic cleaning device for the photovoltaic panel needs to be designed, and the automatic cleaning device can remove residual water stains on the photovoltaic panel and improve the cleaning effect. An automatic photovoltaic panel cleaning device comprises a concentric-square-shaped frame, u-shaped frames, a spraying assembly and the like, the spraying assembly is arranged in the middle of the rear side face in the concentric-square-shaped frame, and the u-shaped frames are fixedly connected to the rear side of the bottom of the concentric-square-shaped frame in a bilateral symmetry mode. A limiting frame is pulled to move forwards to a proper position, then a photovoltaic panel is placed among four clamping blocks, the limiting frame is loosened to reset, the photovoltaic panel is limited through a u-shaped frame, and then a rotating wheel is twisted to drive a first lead screw to rotate,