750kv composite material cross arm

Abstract

The invention discloses a 750kV composite material cross arm, which comprises two composite material tubes, two composite material insulator strings, two composite material diagonal stays, a composite material horizontal support rod and a steel hanging point device, wherein first steel casings of the two composite material tubes are fixedly connected with the steel hanging point device; a composite material horizontal support rod is fixed between the two steel casing nodes of the two composite material tubes; U-shaped plugboard connecting pieces are arranged at the two ends of the composite material diagonal stays; the U-shaped plugboard connecting pieces at one ends of the composite material diagonal stays are fixedly connected with corresponding steel casing nodes, and the other ends of the composite material diagonal stays are fixedly connected with a tower body; and the two ends of the composite material insulator strings are fixedly connected with the steel hanging point device and a tower body respectively through U-shaped ring connecting pieces. Due to the adoption of the 750kV composite material cross arm, the defect of insufficient material stiffness is overcome through structural stiffness, the stiffness and bearing force of a composite material tower are increased, and the 750kV composite material cross arm can be popularized and applied in high-voltage, ultrahigh-voltage and extra-high-voltage power transmission line engineering.

Description

technical field [0001] The invention belongs to the field of electric equipment, and relates to a power transmission tower structure, in particular to a 750kV composite material cross arm. Background technique [0002] At present, the structure of transmission towers mainly adopts all-steel structure, which consumes a lot of steel and mineral energy, causing serious pollution to the ecological environment. Moreover, the line tower must adopt an all-steel structure, which has problems such as heavy weight, difficulty in construction, transportation, and operation and maintenance. At the same time, due to the advantages of low carbon, energy saving, environmental protection, high strength, light weight, corrosion resistance, easy processing, strong designability and good insulation performance, composite materials have become one of the ideal materials to replace steel in building transmission tower structures. [0003] In order to promote the use of composite materials in tr...

AI Technical Summary

Problems solved by technology

Single-rod composite material rods have mature products in the domestic market at present, but their rigidity is small and their bearing capacity is low, which makes it difficult to meet the requirements of high-voltage line engineering and heavy load, which greatly limits the application of composite materials in transmission line engineering ; Due to its high rigidity and high bearing capacity, the lattice composite tower has the potential to be popularized and applied in high-voltage transmission line projects

However, due to the difficulty of research, there are no related products in the domestic and foreign markets

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