Longitudinal steel support suitable for composite material wire cross arm of power transmission tower in high-altitude area
A composite material and steel support technology, applied in towers, building types, buildings, etc., to avoid connection collisions, shorten lengths, and improve stress
Pending Publication Date: 2018-03-06
YUNNAN POWER GRID +1
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Problems solved by technology
[0003] The purpose of the present invention is to provide a kind of suitable for overcoming the defects and deficiencies existing in the high-altitude areas in the field of existing low-altitude area transmission tower composite material wire cross-arm structure setting and transmission line composite material cross-arm length improvement technology. Longitudinal steel supports for crossarms of composite conductors in transmission towers at high altitudes
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[0017] See figure 1 , figure 2 , a longitudinal steel bracket suitable for cross-arms of composite material conductors of transmission towers in high altitude areas, its structural features are: the steel bracket is composed of section steel arranged along the line direction of the tower body and combined with 3 bolts to form a stable lattice truss; The root of the composite cross-arm and the end of the steel bracket are connected by flange method 4. The present invention enlarges the opening width of the root of the composite material cross-arm through the longitudinal steel bracket connected to the tower body, shortens the length of the composite material cross-arm on the premise of satisfying the minimum insulation length of the composite material cross-arm, and avoids the The end connection collision improves the force bearing of the composite material cross arm. The investment in engineering construction is saved, and it is convenient to popularize and apply in transmi...
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The invention discloses a longitudinal steel support suitable for a composite material wire cross arm of a power transmission tower in a high-altitude area. The structural style of the longitudinal steel support is characterized in that the steel support is a stable lattice truss formed by means of the method that pieces of structural steel arranged in the line direction from a tower body are connected and combined through bolts; and the root of the composite material cross arm and the end of the steel support are connected in a flange mode or in an inserting mode. Through the longitudinal steel support connected with the tower body, the opening width of the root of the composite material cross arm is increased, under the premise that the minimum insulated length of the composite materialcross arm is met, the length of the composite material cross arm is decreased, connecting collision of the end of the composite material cross arm is avoided, the stress of the composite material cross arm is improved, the engineering building investment is saved, and application and popularization in power transmission line engineering in the high-altitude area are facilitated.
Description
technical field [0001] The invention belongs to the electric power industry, and is suitable for the arrangement of longitudinal steel brackets of the composite material wire cross arms of transmission towers in high-altitude areas, the length of the composite material cross arms of power transmission lines and the connection collision technology. Background technique [0002] At present, the poles and towers of overhead transmission lines of 110kV and above in my country generally adopt lattice-style angle steel towers, with corridors and corridors for the lines, large footprints, difficult land acquisition, and high compensation costs for demolition. In the transmission lines in low-altitude areas, although some line towers have tried composite material cross-arms to solve some of the above problems, but the composite material cross-arms are too long, or the towers connected to the composite material cross-arms need to be enlarged The section size of the body can avoid the...
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IPC IPC(8): E04H12/24E04H12/02E04H12/08
Inventor 颜涛陇源杰余斌阮少林陈国栋谭莲飞蒋华荣余明智樊勇潘基书段学云
Owner YUNNAN POWER GRID