Robot for cleaning surfaces of photovoltaic modules

The invention discloses a robot for cleaning the surfaces of photovoltaic modules. The robot comprises a vehicle body, two wheel sets installed at the two sides of the vehicle body respectively, two caterpillar bands, a rolling brush installing box fixedly connected to the front end of the vehicle body and a cleaning rolling brush pivoted into the rolling brush installing box; each wheel set comprises at least two wheels, the two caterpillar bands sleeve the exteriors of the two wheel sets respectively, and the inner edges of the caterpillar bands are in meshed cooperation with the outer peripheral edges of the wheels; two first driving motors are arranged on the vehicle body, and rotary shafts of the two first driving motors are synchronously linked to one wheel of the two wheel sets separately; a second driving motor is arranged in the rolling brush installing box, a rotary shaft of the second driving motor is synchronously linked to the cleaning rolling brush, and the bottom of thecleaning rolling brush pr