地铁新型车载式供电接触轨几何参数检测装置的研究及应用
吴晨恺程志全翟胡超
Research and Application of New Type Metro Vehiclemounted Power Supply Contact Rail Geometrc Parameter Detection Device
WU ChenkaiCHENG ZhiquanHAI Huchao
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作者信息:广州地铁集团有限公司，510335，广州
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Affiliation:Guangzhou Metro Group Co., Ltd., 510335, Guangzhou, China
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关键词:
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Key words:
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DOI:10.16037/j.1007-869x.2023.07.025
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中图分类号/CLCN:U226.5: U231
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栏目/Col:研究报告
摘要:
目的：为确保接触轨供电系统安全服役，指导运营养护维修，特提出一种地铁新型车载式供电接触轨几何参数检测装置。方法：详细阐述其定义、组成、检测原理、软件功能等，并验证检测装置的精度和现场实际应用情况。通过长期跟踪试验和大量的数据分析，验证供电接触轨检测装置的实际应用精度，具体采用检测车以30 km/h速度往返检测2遍，以采集接触轨的几何参数数据，利用分析程序导出4次检测数据，提取定位点支柱处工作高度和偏移值，同时人工测量该段数据，进行包括接触轨工作高度、偏移值的准确度动静态对比和检测系统本身重复性误差对比。结果及结论：动静态对比50个定位点测量值，其中：48个工作高度测量值动静态误差在±2 mm以内的占比96%，仅2个工作高度测量值动静态误差在±3 mm以外(占比4%)，精度满足标准要求；50个偏移值动静态误差均在±2 mm内，占比100%，满足要求。对比50个定位点4次测量值，工作高度重复性误差在±2 mm以内，占比96%，满足精度要求；偏移值重复性误差在±2 mm以内，占比99%，满足精度要求。地铁新型车载式供电接触轨几何参数检测装置在6条正线接触轨上已正常运用近1年半，约完成130次接触轨动态检测作业，检测总里程达1万km以上，长期跟踪下设备及检测装置稳定，精度满足现场使用要求。
Abstracts:
Objective: To ensure safe operation of contact rail power supply system during service and guide operation, maintenance and repair, a new type of metro vehiclemounted power supply contact rail geometric parameter detection device is proposed.Method: Its definition, composition, detection principle, software functionality are expounded, and the accuracy and practical application onsite situation of the detection device are verified. Through longterm tracking experiments and an enormous amount of data analysis, the actual application accuracy of the power supply contact rail detection device is verified. Specifically, a detection vehicle is used to collect contact rail geometric parameter data by detecting twice on roundtrip at a speed of 30 km/h, and the analysis program is used to export detection data four times while extracting the working height and offset value at the positioning column. At the same time, the accuracy of the data including contact rail working height and offset value is compared dynamically and statically with manual measurements, and the repeatability error of the detection system itself is compared. Result & Conclusion: In the dynamic and static comparison of the measured values at 50 positioning points, dynamic and static errors of working height measurements of 48 are within ± 2 mm, accounting for 96%; the dynamic and static errors of only two measured values are beyond ± 3 mm ( accounting for 4%), meeting the accuracy requirements; the dynamic and static errors of 50 offset values are within ± 2 mm, accounting for 100%, meeting the accuracy requirements; comparing the fourtime four measured values of the 50 positioning points, the repeatability error of the working height is within ± 2 mm, accounting for 96%, meeting the accuracy requirements; the repeatability error of the offset value is within ± 2 mm, accounting for 99%, meeting the accuracy requirements. The new metro vehiclemounted power supply contact rail geometric parameter detection device has been in normal service on six main line contact rail main lines for nearly 1.5 years, completing approximately 130 dynamic contact rail dynamic detection tasks, with a total detection mileage of over 10,000 kilometers. Under longterm tracking, the equipment and device are stable, and the accuracy meets the onsite usage requirements.
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