钢丝导轨中的应变和力测量

IF 1.2 4区 工程技术 Q3 MINING & MINERAL PROCESSING Archives of Mining Sciences Pub Date : 2023-07-20 DOI:10.24425/122450
J. Juraszek
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引用次数: 11

摘要

本文提出了一种利用布拉格光栅光纤传感器测量钢丝绳导轨应变和载荷的新方法。其原理是用光纤同时测量绳索的纵向应变和固定绳索的螺栓的横向应变。到目前为止,使用的张力传感器只能通过使用特殊应变插入件的间接测量来确定固定绳索的头部的载荷。它们需要校准、温度变化补偿以及定期检查和校准。固定绳索的头部需要进行重大的设计更改。基于光纤传感器的测量没有这些缺点,并且由于工作介质是光,因此测量的精度和安全性高得多。紧固头不变。绳索载荷的测量可以基于应变值的变化,也可以通过测量固定绳索支架的螺栓的挠度来间接测量。所提出的解决方案包括在螺栓内放置带有布拉格光栅的光纤。它能够以2kHz的频率进行连续测量。在地下采矿研究与监督中心建造了一个特殊的试验台。在Piast矿的一台采矿提升机中对导绳进行了测试。
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Strain and Force Measurement in Wire Guide
The paper presents a new method for measuring the strain and load of wire ropes guide using fiber optic sensors with Bragg gratings. Its principle consists in simultaneous fiber optic measurement of longitudinal strain of the rope and transverse strain of the bolt fixing the rope. The tensometric force transducers which have been used so far were only able to determine the load in the head securing the rope through an indirect measurement using a special strain insert. They required calibration, compensation of temperature changes, as well as periodic checking and calibration. The head fastening the rope required significant design changes. Measurement based on fiber optic sensors does not have these drawbacks and is characterized by a much higher accuracy and safety of measurements, because the working medium is light. The fastening head does not change. The measurement of the rope load may be based on the change of strain value or indirectly by means of measuring the deflection of the bolt fixing the rope holder. The proposed solution consists in placing the optical fiber with Bragg grating inside the bolt. It enables continuous measurements with a frequency of 2 kHz. A special test bench was built at the Research and Supervisory Centre of Underground Mining. Testing on guide ropes was carried out in a mining hoist in the Piast mine.
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来源期刊
Archives of Mining Sciences
Archives of Mining Sciences 工程技术-矿业与矿物加工
CiteScore
2.40
自引率
16.70%
发文量
0
审稿时长
20 months
期刊介绍: Archives of Mining Sciences (AMS) is concerned with original research, new developments and case studies in mining sciences and energy, civil engineering and environmental engineering. The journal provides an international forum for the publication of high quality research results in: mining technologies, mineral processing, stability of mine workings, mining machine science, ventilation systems, rock mechanics, termodynamics, underground storage of oil and gas, mining and engineering geology, geotechnical engineering, tunnelling, design and construction of tunnels, design and construction on mining areas, mining geodesy, environmental protection in mining, revitalisation of postindustrial areas. Papers are welcomed on all relevant topics and especially on theoretical developments, analytical methods, numerical methods, rock testing, site investigation, and case studies.
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