A pole for assembling transmission towers

Abstract

Disclosed is a tower crane for assembling a power transmission tower comprising a vertically disposed tower body (15) and a cross arm (16) transversely disposed on the tower body (15). The tower crane consists of an upper end section (1), a standard section (2) and a lower end section (3) disposed sequentially from top to bottom, wherein the tower crane is provided with guy wires (18) connected to the power transmission tower; the upper end section (1), the standard section (2) and the lower end section (3) are connected with each other by rectangular connectors (4), and the section body of the standard section (2) is a rectangular frame consisting of vertically disposed main tubes (14) and adjacent inclined tubes (6) between the main tubes; and the guy wires (18) extend from the tower crane to the tower body (15), and are supported therebetween with stay bars (5) horizontally disposed on the power transmission tower.

Description

technical field [0001] The invention relates to a holding pole, in particular to a holding pole for assembling a transmission tower. Background technique [0002] The pole is a lifting tool used when hoisting equipment. There are mainly two types of poles: tube type and lattice type. Under the same load capacity, the lattice type is lighter in weight than the single column type, with good longitudinal stability, high bending strength and small lateral deformation. Therefore, the lattice pole is more widely used than that. [0003] Existing lattice-type pole-holding materials generally use steel standard sections and aluminum standard sections. The density of steel is high, and the poles made of it are heavy, which is not conducive to assembly, disassembly and transportation, especially in complex mountainous areas and areas with harsh environments. Installation and transportation are more difficult. The density of aluminum material is relatively low, and the strength of t...

AI Technical Summary

Problems solved by technology

[0004] (1) Low elastic modulus: the elastic modulus of FRP is 5 times smaller than that of steel, and the rigidity is low

[0005] (2) Short temperature resistance period: FRP generally cannot be used at high temperatures for a long time. For example, general-purpose polyester FRP is generally only used below 100°C; general-purpose epoxy FRP is only above 60°C, and its strength drops significantly

[0006] (3) Easy aging: poor aging resistance under conditions such as ultraviolet rays, wind, sand, rain and snow, chemical media, mechanical stress, etc.

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