Adjustable solar photovoltaic support

The utility model relates to the technical field of solar photovoltaic supports. The utility model relates to a support, in particular to an adjustable solar photovoltaic support. The photovoltaic support comprises two photovoltaic support side beams. a cross beam inner groove is formed in the photovoltaic bracket cross beam; a cleaning frame is fixedly mounted in the cross beam inner groove; cleaning sliding grooves are formed in the two sides of the cross beam inner groove, a first fixing clamping hole is formed in the lower surface of the cross beam inner groove, a first limiting clamping groove is formed in the lower surface of the photovoltaic support cross beam, protruding blocks are connected to the two sides of the cleaning frame, and a cleaning brush is fixedly installed on the lower surface of the cleaning frame. The cleaning brush frame is installed, when excessive dust is accumulated in the groove in the cross beam, only the cleaning brush frame at one end needs to slide along the inner groove of