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A special-shaped cross arm and transmission pole

A technology of power transmission pole and cross arm, applied in the field of power transmission insulation equipment, can solve the problems of split forming of cross arm and cumbersome assembly process, etc.

Active Publication Date: 2019-07-12
JIANGSU SHENMA ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the deficiencies of the prior art, one of the purposes of the present invention is to provide a special-shaped cross arm, which solves the problems of separate forming of the cross arm and cumbersome assembly process

Method used

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  • A special-shaped cross arm and transmission pole
  • A special-shaped cross arm and transmission pole
  • A special-shaped cross arm and transmission pole

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0068] Such as figure 1 and figure 2 As shown, the profiled cross arm 100 in this embodiment includes a horizontal portion 1 and vertical portions 2 located at two ends of the horizontal portion 1 . Wherein, the horizontal part 1 is used for fixing together with the rod body of the transmission pole, and the vertical part 2 is used for supporting the wire.

[0069] Wherein, the horizontal part 1 is a solid composite rod with a circular cross section. Of course, the horizontal part 1 can also be set as a hollow bar. The material of the horizontal part 1 is fiberglass and epoxy resin.

[0070] In this embodiment, the vertical part 2 is a composite profile with a circular cross section, and the material is the same as that of the horizontal part. An umbrella skirt 3 is arranged outside the vertical part 2 , specifically, four umbrella pieces are arranged on the vertical part 2 . The material of the umbrella skirt 3 is high-temperature vulcanized silicone rubber. Because th...

Embodiment 2

[0081] Such as Figure 7 As shown, in this embodiment, the special-shaped cross arm 120 includes a horizontal portion 12 and three vertical portions 13 located on the horizontal portion, wherein two vertical portions 13 are respectively located at both ends of the horizontal portion, and the third vertical portion 13 is located in the middle section of the horizontal portion.

[0082] The horizontal part 12 is also a hollow composite material bar, and the difference from the first embodiment is that its cross section 14 is a hollow rectangle. Because the force characteristics of the square tube are the best, setting the horizontal part 12 as a square tube is beneficial to enhance the mechanical properties of the special-shaped cross arm 120 .

[0083] The reasons for choosing square tubes are as follows:

[0084] In order to compare the mechanical characteristics of different cross-sectional shapes in the plane bending state, the hollow square tube, round tube, I-shaped tube...

Embodiment 3

[0102] Such as Figure 12 and Figure 13 As shown, in this embodiment, the profiled cross arm 120 includes a horizontal portion 20 and vertical portions 21 located at two ends of the horizontal portion. The wire is hung on the vertical part 21, and the special-shaped cross arm 120 is fixed on the power transmission pole through the horizontal part 20.

[0103] Same as Embodiment 1 and Embodiment 2, the horizontal part 20 is a composite rod made of short glass fiber and resin, and two mounting holes are provided in the middle section of the horizontal part 20 for fastening with U-shaped hoops and The special-shaped cross-arm 120 is fixedly connected to the power transmission pole for use in cooperation with the parts. Different from Embodiment 1 and Embodiment 2, in this embodiment, the cross section 22 of the horizontal portion 20 is I-shaped. It can be seen from the above table that under the premise of the same area, that is, the same materials, the I-shaped section has t...

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Abstract

The invention discloses a special-shaped cross arm and a power transmission pole. The special-shaped cross arm comprises a horizontal portion and vertical portions arranged at the two ends and is integrally formed; the horizontal portion of the special-shaped cross arm is installed on the power transmission pole, and the vertical portions are used for supporting wires. The horizontal portion and the vertical portions do not need to be independently formed, the connection mode between the horizontal portion and the vertical portions does not need to be taken into account, and the horizontal portion and the vertical portions do not need to be connected together. Due to the fact that the special-shaped cross arm is integrally formed, the assembling procedures of structures of the cross arm are omitted, and the special-shaped cross arm can be integrally installed on the power transmission pole, so that installation is easier and more convenient.

Description

technical field [0001] The invention relates to a power transmission insulation device, in particular to a special-shaped cross arm and a power transmission pole for power transmission. Background technique [0002] In the overhead transmission line, the transmission tower plays the role of supporting the wire. Specifically, the wire is hung on the free end of the cross arm of the transmission tower, so the cross arm needs to meet certain mechanical properties and insulation properties. In the prior art, the cross-arms of traditional transmission towers are generally metal products. Due to the conductivity of metal materials, hanging insulator strings must be set at the free ends of the cross-arms on the transmission towers to serve as gaps between the wires and the transmission poles and the wires. Insulation between conductors. Considering the impact of wind swing on the insulation distance between conductors and transmission poles, and between conductors and conductors, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E04H12/00E04H12/24
CPCE04H12/00E04H12/24
Inventor 马斌郁杰李德权颜启昕王佳佳邱勇
Owner JIANGSU SHENMA ELECTRIC CO LTD