The support is mainly used to fix photovoltaic modules. The following figure 2-9 is the support structure diagram. As shown in the figure, the fixed support is selected for the project. The cement pier is embedded 300 mm into the soil, and the support is placed in the concrete first. The screw mouth protrudes 50 mm. The distance between the pier and the pier is 1800 mm, and the size of the pier is 400 * 400 * 400 mm.