Compact suction cup structure for crawler-type photovoltaic cleaning robot

The compact suction cup structure for the crawler-type photovoltaic cleaning robot comprises a base, and the base can be fixed to a bottom plate in a vehicle body of the crawler-type photovoltaic cleaning robot through screws; the limiting seat is mounted on the base, and the lower end part of the limiting seat sinks to the outer side of the vehicle body bottom plate; the adjusting part is mounted in the limiting seat, and the limiting seat can limit the adjusting part; the adjusting piece can drive the adsorption piece to move through the connecting piece; and the negative pressure part is mounted on the base, and the negative pressure part can increase the negative pressure of the adsorption part, so that the base is fixed on the photovoltaic panel. According to the photovoltaic cleaning robot, the photovoltaic cleaning robot can safely and stably rotate on a photovoltaic panel inclined by a certain angle without slipping, the ground clearance of a vehicle body chassis and the vehicle body height can be red