牛蒡收获机牵引力阻力试验及参数优化  

Vibration Drag Reduction of Burdock Harvester and Parameter Optimization

作　　者：吕宏靖[1,2] 王瑞丽[1] 邱立春[1] 张旭东[3] 

机构地区：[1]沈阳农业大学工程学院,沈阳110161 [2]辽宁省农业机械化技术推广站,沈阳110034 [3]辽宁省农业机械化研究所,沈阳110161

出　　处：《沈阳农业大学学报》2014年第2期185-189,共5页Journal of Shenyang Agricultural University

基　　金：国家自然科学基金项目(51175354);国家公益性行业(农业)科研专项项目(201303125)

摘　　要：为了解决牛蒡收获机对动力高需求问题,应用振动减阻的原理,采用二次正交旋转组合试验设计,对牛蒡收获机偏心轮振动松土试验进行分析,确定收获机振动挖掘的关键参数与降低土壤对牵引阻力峰值的关系;建立了以机器振动频率、前进速度、振幅作为试验影响因素,收获机牵引阻力作为试验指标的回归数学模型。分析结果表明:数学模型与实际情况拟合良好,各因素对试验指标影响顺序为振动频率>振幅>收获机前进速度。通过MATLAB对回归数学模型的曲面的分析,得出影响因素的最佳值为收获机振动频率9.398Hz,前进速度0.705m·s-1,振幅8.67mm,阻力峰值为12.446kN。优化后的收获机可以配套中型拖拉机收获。In order to meet burdock harvester high driving force demand, this experiment adopted the vibration anti-drag principle, and the two times orthogonal rotational regressive tests. The analysis was focused on the eccentric wheel vibration device. The harvester working frequency, velocity, and amplitude were three input parameters; traction peak resistance was output parameter. The regression indicated model between output parameter and input parameters were established. The result indicated that the model was fitting, and weighted order was harvester frequency, amplitude and working velocity. By using the MATLAB software, there were three curve-models present the interaction between those parameters. Moreover, the result of programming solver showed that optimized parameters which were frequency 9.398 Hz, velocity 0.705m ·s^-1, amplitude 8.67mm. The lowest traction peak resistance was 12.446kN. The optimal designed harvester could be driven by the middle-sized tractor.

关 键 词：振动 挖掘铲 牛蒡 收获机 

分 类 号：TK6[动力工程及工程热物理—生物能]