Authors

Abstract

To enhance the efficiency and quality of whole-stalk reed harvesting and baling, and to address issues such as low efficiency, high susceptibility to reed damage, and high fragmentation rates associated with manual baling, this study focuses on a critical component of the reed baling device: the design and optimization of a trigger rope-feeding mechanism. This mechanism comprises a triggering mechanism and a rope-feeding mechanism. The triggering mechanism employs a combination of a rocker-slider mechanism and springs to achieve reliable triggering and resetting of the baling action. The rope-feeding mechanism utilizes a crank-rocker mechanism to drive the rope-feeding needle, completing tasks such as rope delivery, knotting initiation, and reed compression to enhance bale compactness. A 3D model of the mechanism was established using SolidWorks, and kinematic simulation and parameter optimization were performed using ADAMS. The key parameter combinations for the trigger mechanism rocker length of 100 mm, connecting rod length of 30 mm, offset distance of 90 mm, and the rope feeding mechanism crank length of 160 mm, rocker length of 175 mm, and connecting rod length of 630 mm were determined. Based on the optimization results, orthogonal experiments were conducted with rope type, operating speed, and pre-tightening force as factors. The results indicate that the optimal parameter combination is nylon rope, operating speed of 90 r/min, and pre-tightening force of 123N. Experimental analysis revealed that operating speed has the most significant impact on productivity, pre-tightening force is the dominant factor influencing the damage rate, and rope type primarily affects the bale forming rate. Bench tests verified that this trigger rope-feeding mechanism effectively enables low-damage, high-efficiency reed baling, significantly improving bale density and operational efficiency, providing new technical insights for the development of reed baling devices.

Abstract in Chinese

为提升芦苇整杆收获打捆的效率与质量，解决人工打捆效率低、易损伤芦苇且破碎率高的问题，本文聚焦芦苇打捆装置的关键环节，设计并优化了一种触发送绳机构。该机构由触发机构和送绳机构组成，触发机构采用摇杆滑块机构与弹簧的组合，实现打捆动作的可靠触发与复位；送绳机构基于曲柄摇杆机构驱动送绳针，完成捆绳递送、打结触发以及对芦苇的挤压，增强草捆紧实度。利用SolidWorks建立机构三维模型，通过ADAMS进行运动学仿真与参数优化，确定了触发机构摇杆长度100 mm，连杆长度30 mm，偏置距离90 mm，以及送绳机构曲柄长度160 mm，摇杆长度175 mm，连杆长度630 mm的关键参数组合。基于优化结果，以捆绳类型、工作转速和预紧力为试验因素，进行正交试验。结果表明，最优参数组合为尼龙绳、工作转速90 r/min、预紧力123N。试验分析显示工作转速对生产率影响最显著，预紧力是损伤率的主控因素，捆绳类型则主要影响成捆率。台架试验验证了该触发送绳机构能够有效实现芦苇的低损伤高效打捆，显著提高草捆密度和作业效率，为芦苇打捆装置的研发提供了新的技术思路。