对多层钢丝绳两根电缆供电方案的运行情况进行了分析

I. Belmas, O. Bilous, G. Tancura, A. Shvachka
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摘要

目的。斜拉桥缆索的定期检查是保障人们生命安全的关键。然而,由于绳索的交织结构,往往使检测信号变得复杂,导致绳索缺陷信号和股线信号混合。为了保证钢丝绳的工作能力,有必要定期检查电缆的完整性。研究方法。工作中采用观察分析方法和数理统计数据处理方法;制定钢丝绳实际技术状况评估标准时的系统分析;索断裂预测模型开发中的数学建模方法。研究的结果。本文分析了改变施加在两根电缆上的电流长度参数时的电缆绳控制系统,并给出了改变损坏电缆数量时的分布性质。得到的结果证明了使用这种输入方法的必要性,因为系统明显适用于不同的情况。科学的新奇。具有破损部位判定功能的电缆断裂自动检测系统,允许装有扁橡胶绳的起重机械在运行过程中,以自动模式监测橡胶外壳内硫化电缆的技术状况,并在任何电缆断裂时停机。绞合电缆两端电压的变化取决于绳子的长度,其变化规律如下:当绳子长度为10m时-电位差不超过7V,在100m - 106,在300m - 1015时,按比例取决于电缆电阻与绳子橡胶层比电导率的平方根和乘积。实用价值。自动控制系统的引入将使快速决策成为可能,旨在消除扁平单层和斜拉多层绳索的损坏,停止损坏的“发展”,减少恢复起重机工作状态所花费的时间,最重要的是-提高其运行的可靠性和安全性。
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Analysis of the operation of the electrical current supply scheme to two cables of a multilayer wire rope
Purpose. Regular inspection of cables on cable-stayed bridges is key to ensuring the safety of people's lives. However, the detection signals are usually complicated by the interwoven structures of the ropes, which cause the rope defect signal and the strand signal to be mixed. To ensure the working capacity of the wire rope, it is necessary to regularly check the integrity of the cables. Research methodology. Analytical methods of observations and mathematical and statistical data processing are used in the work; system analysis when developing criteria for assessing the actual technical condition of wire ropes; the method of mathematical modeling in the development of prognostic models of cable breaks. Research results. The paper analyzes the cable rope control system when changing the parameters of the lengths of the electric current applied to two cables, and shows the nature of the distribution when the number of the damaged cable is changed to another. The obtained results demonstrate the necessity of using this method of input, because the system clearly works in different cases. Scientific novelty. The automatic cable break detection system with the function of determining the place of damage allows in automatic mode during the operation of a lifting machine equipped with a flat rubber rope to monitor the technical condition of the cables vulcanized in a rubber shell and to stop the machine in the event of a break of any cable. The change in the electric voltage between the ends of the twisted cable depends on the length of the rope as follows: with a rope length of 10 m - the potential difference does not exceed 7V, and at 100 m - 106, at 300 m - 1015 proportionally depends on the square root and the product of the electrical resistance of the cable and the specific conductivity of rubber layers of rope. Practical value. The introduction of an automatic control system will make it possible to quickly make decisions aimed at eliminating damage to flat single-layer and cable-stayed multi-layer ropes, stop the "development" of damage, reduce time spent on restoring the working condition of the lifting machine, and most importantly - increase its reliability and safety of operation.
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