To investigate the problem of track shedding in mine-used monorail crane which can lead to the detachment of track-bending equipment during turning and track-changing operations the effects of the traditional series-connected drive type and structural parameters of monorail hoist drive units on the track was analyzed. Based on this analysis, a heavy-load leapfrog hybrid drive method for monorail hoists was proposed. Using an underground monorail hoist equipped with ten drive units as the research subject, a heavy-load, multi-condition “straight-bend” mechanical model was established for track-changing behavior. The influence of turning radius and the spacing between adjacent series drive units on the lateral forces exerted on curved tracks during the track-changing process was examined, and an optimal leapfrog hybrid drive configuration was subsequently determined. The results indicate that the leapfrog hybrid drive effectively mitigates the excessive concentrated stress inherent in traditional series drives. When the monorail crane car carries a total load of 40~60 t and operates on tracks with turning radii of 4~10 m, the maximum lateral forces generated under the hybrid drive are significantly reduced compared with those prior to optimization by 15.43%, 26.19%, 35.94%, and 44.28%, respectively. Moreover, the improvement becomes more pronounced as the track’s turning radius increases. The findings demonstrate that the proposed leapfrog hybrid drive method can significantly reduce the lateral forces exerted on the track by the monorail hoist during heavy-load turning, thereby providing a sound theoretical basis and a practical technical solution for mitigating track damage and enhancing transportation reliability and safety.
HUANG Zhi-xiang, DENG Hai-shun, ZHENG Hao, WANG Guo-rong, YE Qing-chun.
Steering Mechanical Characteristics and Optimization of Driving Performance for Mine-used Heavy-duty Monorail Cranes[J].
Science Technology and Engineering, 2026, 26(19): 8160-8167 DOI:10.12404/j.issn.1671-1815.2505279
为提高单轨吊的运行可靠性,相关研究主要集中在动力分配、驱动控制、算法优化等方面。丁剑[13]分析了设备在大倾角行车轨道失效的原因,提出了驱动部分布方案与驱动力分配。Lu 等[14]对单轨吊驱动系统的动态特性进行分析,确定了重载、陡坡工况下合适的启动加速度,并评估了重载陡坡工况下单轨吊驱动系统的可靠性。$\stackrel{\mathit{\text{'}}}{\mathrm{S}}$wider 等[15-16]为提高车载人员和矿山基础设施的安全以及单轨吊使用效率,制定了单轨吊行驶速度及制动策略。刘泽朝等[17-18]提出了单轨吊安全性能关键参数识别方法,通过对安全性能关键参数的实时精准获取,保障其安全性能。Gutarevich 等[19]采用悬吊上方嵌入弹性装置,降低悬挂式单轨的振动幅度,从而降低动载荷对轨道影响。凌疆语[20]通过构建基于YOLOv5( you only look once version 5)与SGBM(semi-global block matching)算法的视觉感知系统,研究了单轨吊在多种工况下对前方障碍物的识别、测距及自动制动控制策略,并通过仿真与实验验证了所提方法的有效性。
混合驱动单轨吊区别于串联驱动单轨吊,在起吊梁下方第一、第二驱动部之间增设承载车,起吊梁、承载车、第三驱动部之间采用回形拉杆连接。轨道受到承载小车的力 fc 沿坐标系分解为fcx、fcy,以及受到来自起吊梁下方各驱动部的力,即fiq,其沿坐标系分解为fiqx、fiqy,混合驱动单轨吊转弯工况力学模型如图6所示。
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