Types And Installation Environments of Flexible PV Brackets

1. Flexible brackets are divided into single-layer cable suspension structure, double-layer cable truss structure, fish-belly cable truss structure, and string structure.

(1) Single-layer cable suspension structure The single-layer cable suspension structure is generally composed of a main steel frame composed of beams and columns, a cable body and other main components. The cable body is two cables parallel to the plane of the component, and the cable body is used instead of a general tension member. After the component support cable is tensioned, it is fixed by the anchor at the end of the steel beam. The tensioning equipment makes the support cable obtain stress stiffness and is used to support the component. The self-balancing system is formed by the end of the cable.

(2) Double-layer cable truss structure The double-layer cable truss structure is composed of a main steel frame composed of beams and columns, a cable body and a rigid strut between the cable bodies. The cable body is composed of two parallel upper chords and a lower chord with an upward curvature. Compared with the single-layer cable suspension structure, it has more load-bearing cables and rigid struts. The stress stiffness is obtained by tensioning the cable body to form a self-balancing system.

(3) Three-layer cable truss structure The three-layer cable truss structure consists of a main steel frame composed of beams and columns, cable stays, cable bodies, and rigid struts between the cable bodies. Compared with the double-layer cable truss, the cable body has an additional stabilizing cable to form an upper and lower chord structure with opposite curvatures. The stabilizing cable is used to resist wind suction.

(4) Tension-chord structure The tension-chord structure consists of a main steel frame composed of beams and columns, cable stays, a rigid upper chord, a cable body, and rigid struts. The cable body is a load-bearing cable. Compared with the three-layer cable truss, there is no stabilizing cable. The upper chord adopts a rigid structure, and the lower chord adopts a flexible cable. Under the action of prestress, the struts play an elastic supporting role on the upper chord to improve the stress state of the upper structure, thereby forming a self-balancing system.

2. Installation environment

(1) Flexible arrangement according to terrain. Flexible brackets have stronger environmental adaptability in complex terrain conditions such as mountains, barren slopes, gullies, steep slopes, etc. Flexible bracket systems can adapt to various harsh landforms and can be used in harsh scenes such as steep slopes, gullies, and mining voids where traditional brackets are difficult to arrange.

(2) Release the space under the panel and realize the secondary use of land.

With its unique advantages and innovative design, PV flexible bracket technology provides new ideas and directions for the development of the PV industry.