Aluminum cable steel reinforced strain clamp characteristic calibration and crimping quality evaluation method

Abstract

The invention discloses a steel-cored aluminum strand strain clamp characteristic calibration and crimping quality evaluation method, which comprises the following steps of: acquiring a DR detection image of an important crossing rod steel-cored aluminum strand tower strain clamp of an overhead transmission line by adopting an X-ray detection device; the method comprises the following steps: taking pictures of the rest part of the strain clamps of the steel-cored aluminum stranded wire of the overhead transmission line in a photographing manner, comparing the obtained DR detection image with the pictures to evaluate the crimping quality of the strain clamps of the steel-cored aluminum stranded wire, and evaluating the crimping quality of the strain clamps of the steel-cored aluminum stranded wire when the crimping quality is evaluated, so that the crimping quality of the strain clamps of the steel-cored aluminum stranded wire is evaluated. Firstly, a DR detection image is used for carrying out steel-cored aluminum strand strain clamp characteristic calibration; measuring an unmanned aerial vehicle photo image; and finally, performing characteristic comparison on the strain clamp of the steel-cored aluminum strand according to results of the previous two steps. According to the method, the crimping quality of the strain clamp of the steel-cored aluminum strand of the whole line can be rapidly evaluated, the detection accuracy is high, the labor intensity is greatly reduced, and power failure operation is not needed.

Description

technical field [0001] The invention relates to the technical field of crimping quality detection of a tensile wire clip, in particular to a method for evaluating the quality of a tensile wire clip characteristic calibration and crimping of a steel-cored aluminum stranded wire. Background technique [0002] The erection of high-voltage overhead transmission lines requires the use of tension clamps to crimp and install large-section steel-cored aluminum stranded wires, and the quality of the tension clamp crimping is directly related to the safe and stable operation of high-voltage overhead transmission lines. At present, the same The tension clamps used on a line are usually the same. There are mainly two types of tension clamp crimping quality inspection techniques: the first is manual inspection, which requires manual inspection by carrying X-ray inspection equipment to the tower for inspection. The inspection process is labor-intensive. High intensity, low efficiency, low...

AI Technical Summary

Problems solved by technology

[0002] The erection of high-voltage overhead transmission lines requires the use of tension clamps to crimp and install large-section steel-cored aluminum stranded wires, and the quality of the crimping of tension clamps is directly related to the safe and stable operation of high-voltage overhead transmission lines. At present, the same The strain clamps used on a line are usually the same, and there are mainly two types of crimping quality inspection technologies for strain clamps: the first is manual inspection, which requires manual inspection by carrying X-ray inspection equipment on the pole tower for inspection, and the inspection process is labor-intensive. High strength, low efficiency, low detection safety, and easy to cause radiation hazards to the human body

The second is airborne suspension detection, where the X-ray detection equipment is suspended on the unmanned aircraft, and the unmanned aircraft carries the X-ray detection equipment to hover over the tension clamp for detection. The flexible connection between the man and the plane makes the X-ray detection equipment easy to shake with the wind during the hovering process, resulting in poor imaging quality and inaccurate detection results

[0003] The current crimping quality inspection of steel-cored aluminum stranded wire tension clamps, whether using manual X-ray detection or airborne conditions, is aimed at important crossing towers (poles spanning highways and railways) steel cored aluminum Stranded wires are tested. If a line needs to be tested in a large area (the type of strain clamp used is the same), a long-term power outage is required, which is time-consuming and laborious. The crimping of the strain clamps of galvanized steel strands and aluminum-clad steel strands Inefficient quality assessment

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