Authors

Abstract

The vibration of the hanging cup transplanter affected the hole size and tray seedling quality. This paper takes the 2ZP-2 hanging cup transplanter as the research object, studies the vibration characteristics of the transplanter when it works, deduces the mathematical model of the transplanter-soil vibration characteristics, and solves the steady-state vibration response. The Danish B&K vibration test system carried out the vibration test. Studies have shown that the vertical vibration of the transplanter is greater than that of the lateral vibration and the forward vibration. The main factors affecting the vertical vibration of the transplanter are the forward speed of the transplanter, the soil compaction, and the planting depth. When the forward momentum of the transplanter is in the range of 0.8~2.4 km/h, the vertical vibration acceleration increases with increasing forward speed of the transplanter. According to the power, spectral density curve, and spectral curve, the spectrum range of the vertical vibration energy peak is 0~10 Hz, the vibration frequency is between 4.5~5.5 Hz, and the corresponding vibration acceleration amplitude is 0.03~0.33 m/s2. The research results can provide a reference for improving the operating speed, comfort, and structural optimization.

Abstract in Chinese

针对吊杯式移栽机受复杂激励产生振动影响栽植孔穴参数、穴盘苗栽植质量的问题，本文以2ZP-2型吊杯式移栽机为研究对象，对移栽机工作时的振动特性进行研究，推导了移栽机-土壤振动特性数学模型，求解了稳态振动响应；利用丹麦B&K振动测试系统进行了振动测试试验。研究表明移栽机垂直振动大于横向振动和前进方向振动，影响移栽机垂直振动的主要因素是移栽机前进速度、地表坚实度和栽植深度；当移栽机前进速度在0.8~2.4 km/h范围内时，随移栽机前进速度增加，垂直振动加速度也增加，由功率谱密度曲线和频谱曲线可知，垂直振动能量峰值出现的频谱区间为0~10 Hz，振动主频位于4.5~5.5 Hz之间，所对应的振动加速度幅值范围为0.03~0.33 m/s2。研究结果可以为提高移栽机作业速度、舒适性和结构优化提供参考。