Installation metal tool and using method of tangent suspension tower changing single hanging point to double hanging points

Abstract

The invention relates to an installation metal tool and a using method of a tangent suspension tower changing a single hanging point to double hanging points, wherein the installation metal tool comprises a hanging wire plate, an upper clamp plate, and a lower clamp plate, the upper clamp plate is connected with the lower clamp plate through a first fastening piece, the upper clamp plate is connected with the upper portion of the hanging wire plate through a second fastening piece, the lower clamp plate is connected with the middle portion of the hanging wire plate through a third fastening piece, an original tangent suspension tower hanging wire angle iron is clamped among the hanging wire plate, the upper clamping plate and the lower clamping plate, two hanging wire holes are formed in the lower portion of the hanging wire plate. The installation metal tool and the using method of the tangent suspension tower changing the single hanging point to double hanging points have the advantages of being applicable to zone marker (ZM) type and GUZ type tangent suspension tower hanging points, applicable to 90 degrees and below angle irons and hanging wire angle irons with different thickness, being strong in generality, simple in structure, and convenient to install. Moreover, an iron tower pole and tower structure is not changed and the pole and tower structure is not detached; the metal tool is fixed on the original hanging wire angle irons, thereby achieving the double fixing hanging points and satisfying requirement of rules.

Description

technical field [0001] The invention relates to a general tool for transforming the hanging point of a straight iron tower into a double independent hanging point, in particular to a general-purpose installation fitting for converting a single hanging point into a double hanging point for a 220kV ZM type and a GUZ type straight iron tower. Background technique [0002] In 2005, 6.1.8 of the "Eighteen Major Power Grid Anti-Accident Measures of the State Grid Corporation" stipulates that "for important straight-line crossing towers, including crossing 110kV and above lines, railways, high-grade roads and expressways, navigable rivers, etc. , should adopt double hanging string, V-shaped or eight-shaped insulator string structure, and use double independent hanging points as much as possible.” 13.0.10 of the 2010 "Code for Design of 110kV~750kV Overhead Transmission Lines" stipulates that "the suspension insulator strings should be double-connected or two single-connected". The...

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Problems solved by technology

The design standards for the newly rebuilt lines have been put forward above, and the provincial companies have also carried out a large number of double-string transformations on the transmission lines that have been in operation. However, there is no better solution for the towers with only a single hanging point for the original cross-arm. In this regard, a double hanging point hanging plate is designed, which can be easily fixed on the original hanging angle steel, so that the height of the hanging point will not be reduced a lot, affecting the air gap between the wire and the iron tower

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