Electric power circuit cross arm

Abstract

The invention relates to an electric power circuit cross arm which is composed of a cross arm body and a fixing device. The cross arm body is composed of two pieces of angle iron, the upper surfaces of the two pieces of angle iron are prismatic in cross section or cambered surfaces, the fixing device is composed of a hoop matched with an electric power circuit pole and sleeves matched with the angle iron, the sleeves are arranged on the left side and the right side of the hoop, the angle iron is installed in the left sleeve and the right sleeve, fixing sheets are arranged on the front side and the back side of the hoop respectively, strengthening ribs are manufactured at the upper end and the lower end of each fixing sheet, fixing holes and pull wire installation holes are formed in the surfaces of the fixing sheets, and the pull wire installation holes are formed in the inner sides of the fixing holes. By means of the electric power circuit cross arm, the technical problems that a traditional electric power circuit cross arm is complex in installation process and low in structural strength are solved, risks caused by insufficient strength of fixing pieces during wire pulling can be effectively avoided through the adoption of the strengthening ribs manufactured at the upper end and the lower end of each fixing sheet and the pull wire installation holes formed in the inner sides of the fixing holes, the structure is simple, and reliability is high.

Description

technical field [0001] The invention relates to the field of power transmission, in particular to a power line cross arm. Background technique [0002] At present, the shoulder poles and shuttle poles used in 10kV transmission lines are usually formed by combining two corner poles with nails and horns. Because the structure of this type of cross-arm is easy for birds to build nests on it, a large number of bird nests are always built on it every spring, and the building of these bird nests often causes grounding or gate failure accidents. According to statistics, the distribution network faults caused by bird damage account for as high as 20% of the total distribution network faults. It can be seen that bird damage has brought major hidden dangers to the safe and stable operation of 10kV overhead transmission lines. [0003] But when using the existing power line cross arm ("power line cross arm", application number CN201120271952.9, application date 2011.07. 28, publicatio...

AI Technical Summary

Problems solved by technology

Because the structure of this type of cross-arm is easy for birds to build nests on it, there will always be a large number of bird nests built on it every spring, and the construction of these bird nests often causes grounding or tripping accidents

According to statistics, the distribution network faults caused by bird damage account for as high as 20% of the total distribution network faults. It can be seen that bird damage has brought major hidden dangers to the safe and stable operation of 10kV overhead transmission lines

[0003] But when using the existing power line cross arm ("power line cross arm", application number CN201120271952.9, application date 2011.07. 28, publication date 2012.02. 15) during installation and wire pulling operations, due to the insufficient strength of the middle fixing part, It is very easy to cause danger when pulling the wire; at the same time, during the installation process, the left and right ends of the crossarm need to be fixed through the connector and the hoop. Since the construction personnel are working at high altitude, the installation process is extremely difficult

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