Authors

Abstract

To address the high labour intensity, low operating efficiency, and safety risks associated with loading and unloading flue-cured tobacco leaves in bulk-curing barns, a tobacco-clip loading and unloading device suitable for the confined barn environment was developed. The device integrates a powered platform, a two-stage scissor-lift mechanism, and an online weighing and conveying system. Mechanical modeling and finite element analysis were conducted to verify the structural strength and overturning stability of the lifting mechanism under a rated load of 350 kg and a maximum lifting height of 3 m. The resulting overturning stability coefficient was approximately 2.9. Within an inclination range of 0°–25°, the mass-measurement error of the conveying system did not exceed 0.40%. Field performance tests showed that the maximum conveying rate reached one tobacco clip every 2.7 s. The loading time for a single bulk-curing barn was reduced from 4 h to 1.5 h, while the required labour force decreased from four workers to two. Overall operating efficiency increased by 4.33 times, and the mean time between failures met the requirements for continuous operation during the tobacco-curing season. The developed device enables efficient, low-cost, and reliable loading and unloading of flue-cured tobacco leaves and provides technical support for improving the quality and efficiency of flue-cured tobacco production.

Abstract in Chinese

针对密集烤房烟叶装卸作业中存在的劳动强度大、作业效率低、安全隐患突出等问题，研究设计了一种适配密集烤房环境的烤房烟夹装卸装置。该装置集成了动力平台、二级剪叉式升降机构、在线称重输送系统，以适应烤房狭小空间。通过力学建模与有限元分析，验证了升降装置在额定载荷350 kg、最大升降高度3 m条件下的结构强度与抗倾覆稳定性，抗倾覆系数K≈2.9；输送系统在0°–25°倾斜范围内的质量检测误差率不超过0.40%；现场性能测试表明，装置单夹运输时间最短为2.7 s，每烤房装烟时间由人工的4小时缩短至1.5小时，用工由4人减少至2人，作业效率提升了4.33倍，平均无故障运行时间满足烤烟季连续作业要求。该装置实现了烟叶装卸的高效低成本与高可靠性，为烤烟生产的提质增效提供了技术支撑。