Buried armored composite cable

Abstract

The invention discloses a buried armored composite cable, which comprises an armored cable arranged in a protective pipe. The armored cable comprises a core wire and an armored mechanical layer. The armored cable is installed in the pipe cavity of the protective pipe. The core wire is installed in a protective cavity inside the armored mechanical layer. The armored mechanical layer comprises morethan one steel strip and steel wires inserted into the steel strips. Each steel strip is coiled into a circular structure. The more than one steel wire is evenly inserted around the steel strips in acircle into the through holes formed in the circumference direction of the steel strips, and forms a circle of steel wire protective layer. The armored cable of the invention has very good top compression resistance, and comprises fewer steel wires. The armored layer can be separated from the core wire in the up-down direction after being compressed, and the cable can be protected against compression and shear by the unfolded armored layer.

Description

technical field [0001] The invention relates to a cable, in particular to a buried armored composite cable. Background technique [0002] At present, in order to ensure the performance of compressive resistance, shear resistance and corrosion resistance, the cables buried underground are generally set up as armored cables, which have a relatively hard outer layer, but due to the inner core wire and armored The distance between layers is small, and the inner core wires will also be sheared after being sheared. Therefore, even if the armor layer can resist shearing, the inner core wires will still be squeezed and eventually destroyed. Moreover, the production cost of the current armored outer layer is relatively high. When it is sheared, only its top protects the inner core wire, and the bottom structure will not protect it when it is sheared because it is located at the bottom of the core wire. The role of this part of the hardness is wasted. Contents of the invention [...

AI Technical Summary

Problems solved by technology

[0002] At present, in order to ensure the performance of compressive resistance, shear resistance and corrosion resistance, the cables buried underground are generally set up as armored cables, which have a relatively hard outer layer, but due to the inner core wire and armored The distance between the layers is small, and the inner core wires will also be sheared after being sheared. Therefore, even if the armor layer can resist shearing, the inner core wires will still be squeezed and eventually destroyed.

Moreover, the production cost of the current armored outer layer is relatively high. When it is sheared, only the top protects the inner core wire, and the structure at the bottom does not protect it when it is sheared because it is located at the bottom of the core wire. The role of this part of the hardness is wasted

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