Design of Heavy Agricultural Machinery Rail Transport System and Dynamic Performance Research on Tracks in Hilly Regions of Southern China.

IF 3.5 3区 综合性期刊 Q2 CHEMISTRY, ANALYTICAL
Sensors Pub Date : 2025-07-19 DOI:10.3390/s25144498
Cheng Lin, Hao Chen, Jiawen Chen, Shaolong Gou, Yande Liu, Jun Hu
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Abstract

To address the limitations of conventional single-track rail systems in challenging hilly and mountainous terrains, which are ill-suited for transporting heavy agricultural machinery, there is a critical need to develop a specialized the double-track rail transportation system optimized for orchard equipment. Recognizing this requirement, our research team designed and implemented a double-track rail transportation system. In this innovative system, the rail functions as the pivotal component, with its structural properties significantly impacting the machine's overall stability and operational performance. In this study, resistance strain gauges were employed to analyze the stress-strain distribution of the track under a full load of 750 kg, a critical factor in the system's design. To further investigate the structural performance of the double-track rail, the impact hammer method was utilized in conjunction with triaxial acceleration sensors to conduct experimental modal analysis (EMA) under actual support conditions. By integrating the Eigensystem Realization Algorithm (ERA), the first 20 natural modes and their corresponding parameters were successfully identified with high precision. A comparative analysis between finite element simulation results and experimental measurements was performed, revealing the double-track rail's inherent vibration characteristics under constrained modal conditions versus actual boundary constraints. These valuable findings serve as a theoretical foundation for the dynamic optimization of rail structures and the mitigation of resonance issues. The advancement of hilly and mountainous rail transportation systems holds significant promise for enhancing productivity and transportation efficiency in agricultural operations.

南方丘陵地区重型农机轨道运输系统设计及轨道动力性能研究。
为了解决传统的单轨铁路系统在具有挑战性的丘陵和山区不适合运输重型农业机械的局限性,迫切需要开发一种专门针对果园设备优化的双轨铁路运输系统。认识到这一需求,我们的研究团队设计并实现了一个双轨轨道交通系统。在这个创新的系统中,导轨作为关键部件,其结构特性显著影响机器的整体稳定性和运行性能。在本研究中,电阻应变计用于分析轨道在满载750 kg时的应力应变分布,这是系统设计的关键因素。为了进一步研究双轨钢轨的结构性能,采用冲击锤法结合三轴加速度传感器进行了实际支撑条件下的试验模态分析(EMA)。通过集成特征系统实现算法(ERA),成功地高精度识别了前20种自然模态及其对应的参数。将有限元仿真结果与实验测量结果进行对比分析,揭示了约束模态条件下双轨钢轨的固有振动特性与实际边界约束。这些有价值的发现为轨道结构的动力优化和共振问题的缓解提供了理论基础。丘陵和山区铁路运输系统的发展为提高农业生产的生产力和运输效率带来了巨大的希望。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Sensors
Sensors 工程技术-电化学
CiteScore
7.30
自引率
12.80%
发文量
8430
审稿时长
1.7 months
期刊介绍: Sensors (ISSN 1424-8220) provides an advanced forum for the science and technology of sensors and biosensors. It publishes reviews (including comprehensive reviews on the complete sensors products), regular research papers and short notes. Our aim is to encourage scientists to publish their experimental and theoretical results in as much detail as possible. There is no restriction on the length of the papers. The full experimental details must be provided so that the results can be reproduced.
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