Optimal Design and Development of a Double-Crank Potted Rice Seedling Transplanting Mechanism
Optimal Design and Development of a Double-Crank Potted Rice Seedling Transplanting Mechanism
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DOI：
10.13031/trans.11680
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发表时间：
2017
影响因子：
1.5
通讯作者：
Liang Xin;Zhijun Lv;Wenqing Wang;Maile Zhou;Yun Zhao
中科院分区：
文献类型：
--
作者：
Liang Xin;Zhijun Lv;Wenqing Wang;Maile Zhou;Yun Zhao
抽象。本研究以椭圆齿轮为基础，结合双曲柄五杆机构，设计出一种简易的水稻钵苗分插机构。提出了一种可靠的取苗栽植机构。分析了仿手动插秧机构的优化设计要求。分析了分插机构理论模型的工作原理和运动特性。开发了基于Visual Basic 6.0的计算机辅助分析与优化软件，通过人机交互技术获得了一组满足移植操作要求的轨迹和姿态参数。将优化后的参数用于分插机构的虚拟制造和仿真试验。对分插机构进行了高速摄影台架试验，包括空转试验和取苗/栽苗试验。样机试验结果与理论分析和虚拟仿真结果一致，验证了每种方法的有效性和可行性。在100 rpm的载体转速下，幼苗采摘试验产生了98%的高成功率。样机的田间试验取得了成功，移栽过程满足水稻钵苗移栽的要求。
Abstract. This study invented a simple-type potted rice seedling transplanting mechanism based on elliptical gears in combination with a double-crank five-bar mechanism. A reliable seedling picking and planting mechanism is proposed. The optimal design requirements of the transplanting mechanism, imitating manual transplanting of potted rice seedlings, were analyzed. The working principles of a theoretical model and kinematic characteristics of the transplanting mechanism were analyzed. Computer-aided analysis and optimization software based on Visual Basic 6.0 was developed and used to obtain a set of trajectory and attitude parameters that satisfy the transplanting operation requirements by the human-computer interactive technique. The optimized parameters were used for virtual manufacturing and simulation testing of the transplanting mechanism. The transplanting mechanism was subjected to high-speed photography bench tests by idling and seedling picking/planting verification. Prototype machine testing results were consistent with the theoretical analysis and virtual simulation results, verifying the validity and feasibility of each approach. The seedling picking test generated a high success rate of 98% at a carrier rotation speed of 100 rpm. Field tests of the prototype machine revealed success, and the transplanting process met the requirements of potted rice seedling transplanting.