Cable leading-down facility for established double-circuit strain tower

Abstract

Disclosed is cable leading-down facility for an established double-circuit strain tower. The cable leading-down facility consists of an independent bearing platform and a leading-down rod tower, wherein the independent bearing platform comprises a support platform; the support platform is arranged above cross arms at the top end of a support rod, and is composed of an X-shaped cross arm and a horizontal-line-shaped cross arm, wherein the leading-down rod tower comprises a rod body, a supporting column insulator and auxiliary cross arms, wherein the rod body is close to the established strain tower; and the auxiliary cross arms are parallel to the line direction, and a plurality of layers of the auxiliary cross arms are arranged at equal intervals between the top end of the rod body and theindependent bearing platform. The device is suitable for being tightly attached to the strain tower for construction without changing the stress of the strain tower on the lower side, so that dismantling and rebuilding of an old tower is prevented; and compared with a newly-built linear and strain tower, the construction cost is greatly reduced. According to the facility, the split-type structureof the independent bearing platform and the leading-down rod tower is adopted, so that the influence on the constructed line is reduced by separate construction; and meanwhile, the independent bearing platform is adopted, so that the position of a cable terminal is relatively low, and operation and maintenance are facilitated.

Description

【Technical field】 [0001] The invention relates to the technical field of high-voltage transmission lines, in particular to a platform-type cable down-conduction facility for an existing double-circuit tension tower. 【Background technique】 [0002] In the actual project of cable lead-down of overhead transmission lines, due to the influence of line path, surrounding environment and other factors, the cable lead-down point may appear in the center of the line, near the built tower, etc., especially near the built tension tower. The new tension-type cable terminal tower and the built-up tension tower form a small isolated gap, which increases the unbalanced tension on both sides of the built-up tension tower, which is difficult to meet the use conditions and needs to be dismantled and rebuilt; the new linear cable terminal and the built-up The tensioned tower is affected by the mutual influence of the pole tower foundation, the distance between the two towers should not be too ...

AI Technical Summary

Problems solved by technology

[0002] In the actual project of cable lead-down of overhead transmission lines, due to the influence of line path, surrounding environment and other factors, the cable lead-down point may appear in the center of the line, near the built tower, etc., especially near the built tension tower. The new tension-type cable terminal tower and the built-up tension tower form a small isolated gap, which increases the unbalanced tension on both sides of the built-up tension tower, which is difficult to meet the use conditions and needs to be dismantled and rebuilt; the new linear cable terminal and the built-up The tower is affected by the mutual influence of the pole tower foundation, the distance between the two towers should not be too close, and the utilization rate of the newly built straight tower is not high, the waste of resources is serious, and the overall aesthetics is poor

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