Span-crossing line changing tackle for distributing line and line changing method thereof

Abstract

The invention discloses a span-crossing line changing tackle. The span-crossing line changing tackle comprises middle phase tackles and side phase tackles, wherein the middle phase tackles comprises fixed side frames, movable upper side frames and movable lower side frames; double support pulleys are arranged between the fixed side frames and the movable upper side frames; double paying-off pulleys are arranged between the fixed side frames and the movable lower side frames; the movable upper side frames are hinged with the movable lower side frames; spacing rope hanging rings are further arranged on the middle phase tackles; the spacing rope hanging rings are used for connecting spacing ropes; the side phase tackles comprise U-shaped frames and movable doors; single pulleys are arranged between the U-shaped frames; the movable doors are hinged with the U-shaped frames; connecting pieces are arranged between the middle phase tackles and the side phase tackles. A line changing method using the line changing tackle comprises steps A to F. The span-crossing line changing tackle has the advantages of high construction speed, low cost, high safety and no need of erecting any crossing frame.

Description

Technical field [0001] The invention relates to the field of power equipment, in particular to a wire changing pulley and a wire changing method. Background technique [0002] With the rapid development of the national economy, the scale and density of power lines are also increasing. Affected by objective conditions such as roads, railways, and rivers, some lines need to be replaced with new wires, such as large cross-sections under the conditions of the towers. Wire, or replace the existing wire with a new heat-resistant wire, etc. to increase the current carrying capacity of the line; or when the old wire is damaged, maintenance and replacement are required. The traditional method of replacing overhead wires is to remove the old wires first, and then install new wires between the corresponding poles. [0003] In order to prevent obstructing traffic or affecting safety in the process of replacing the wires, it is necessary to erect crossover frames at important crossings such as...

AI Technical Summary

Problems solved by technology

However, setting up the spanning frame not only requires a lot of manpower and material resources, but also requires a reasonable arrangement of the location of the spanning frame. Setting up the spanning frame will also occupy land, crops and green spaces, which requires high costs, high cost, and low replacement efficiency; There are many mountains and rivers, and there are many cases where the line needs to cross rivers, mountain depressions, and winding roads. The terrain is complex, and many places are not suitable for erecting spanning frames. Vertical and complex terrain, wires are easy to hang on the obstacles below

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