Outer press block for mounting photovoltaic assembly on square tube or rectangular tube

The utility model provides an outer press block for mounting a photovoltaic assembly on a square tube or a rectangular tube. The press block of the utility model connects the photovoltaic assembly onto the square tube or the rectangular tube via a U-shaped bolt and a lower connecting plate in a press manner. The press block has two shapes, namely, the first shape and the second shape. The press block with the first shape is connected to the outer side of a frame between two adjacent photovoltaic assemblies in a press manner. Two ends of the press block are pressed on outer frames of the two photovoltaic assemblies. The central portion of the press block is provided with a recess in contact with the U-shaped bolt. The press block with the second shape is pressed at the outer side of a frame of a photovoltaic assembly without an adjacent photovoltaic assembly. One end of the press block is pressed on the frame of the photovoltaic assembly. One end of the press block with the second shape is provided with a protrusion in contact with the square tube or the rectangular tube. The U-shaped bolt is pressed in the recess in the central portion of the press block, and the protrusion forms a lever fulcrum to increase the pressure for fixing the photovoltaic assembly, thereby enhancing the fixing strength. The end of the press block in contact with the frame of the photovoltaic assembly is bonded with thin rubber to achieve the anti-skid effect, thereby further improving the fixing strength.