气动下压式高速取投苗装置与吊杯时空匹配关系研究

Limit of Synchronous Seedling Reaching of Pneumatic Ejecting Type High-speed Transplanter

摘要:

为探索一种能实现高速取苗后无停顿快速投苗、同步接苗技术方案，分析气动下压式高速取投苗装置高速取苗后不停顿快速投苗4个阶段运动过程，得到穴盘苗运动时间。采用高速摄像机对自制高速取投苗装置无停顿快速投苗过程进行拍摄，通过PCC软件进行捕捉分析和计算，分析了穴盘苗在无停顿抛投过程中位移和时间关系。经同步接苗极限分析和交集运算得不同取苗频率吊杯同步接苗提前相位角范围，获得了高速取投苗装置高速取苗、无停顿快速投苗与吊杯同步接苗时空匹配关系。在高速移栽样机上开展吊杯同步接苗试验，试验结果表明，当取苗频率为180株/min时，吊杯同步接苗成功率为96.4%。研究结果为高速取投苗装置与吊杯时空匹配关系提供基础数据。

Abstract:

To explore a technology solution capable of achieving high-speed seedling retrieval followed by uninterrupted rapid seedling deployment and synchronized seedling reception, an analysis was conducted on the four-stage movement process of rapid seedling deployment after high-speed seedling retrieval by using a pneumatic down-press type high-speed seedling retrieval and deployment device, obtaining the movement time of tray seedlings. High-speed photography was used to capture the process of uninterrupted rapid seedling deployment by the research group’s custom-built high-speed seedling retrieval and deployment device, with PCC software utilized for capture analysis and calculation, examining the relationship between displacement and time during the continuous seedling throw and deploy process. Through limit analysis and intersection operation of synchronous seedling reception, the range of advance phase angles for hanging cup synchronous seedling reception at different seedling retrieval frequencies was determined, achieving the spatio-temporal matching relationship between high-speed seedling retrieval and deployment device, high-speed seedling retrieval, uninterrupted rapid seedling deployment, and hanging cup synchronous seedling reception. Verification experiments of the hanging cup synchronous seedling reception effect were conducted on a high-speed transplanter prototype, with results showing a success rate of 96.4% for hanging cup synchronous seedling reception at a retrieval frequency of 180 seedlings/min, providing foundational data for the spatio-temporal matching relationship between the high-speed seedling retrieval and deployment device and the hanging cup.