摘要
为达到稳定排肥、排肥流量可调控的目的,设计了改善排肥流量均匀性的叠片式啮合圆弧齿轮排肥器。通过对排肥器结构设计与理论分析确定影响叠片式啮合圆弧齿轮排肥器排肥量的主要因素为排肥器工作槽长与排肥轮转速。设计仿真试验研究排肥器排肥量随影响因素变化规律,对结果进行台架试验验证。结果表明:选取排肥量变化曲线拟合斜率表征排肥流量,发现排肥流量可调控且与工作槽段长度、排肥轮转速存在线性关系,线性拟合结果显示校正决定系数分别为0.994、0.990;试验值与仿真值相对误差值较小,仿真试验结果可靠;与外槽轮式排肥器相比变异系数平均减小6.5%,排肥流量均匀性有了较大的提高。该结果对排肥器的创新设计与理论研究提供了参考。
In order to achieve stable and adjustable fertilizer discharge, a cascade mesh circular arc gear fertilizer device was designed to improve the uniformity of discharge. By distributing structure design and theoretical analysis, length and speed of the fertilizer wheel were the main factors that affected the flow of folding plate mesh circular arc gear fertilizater device. This paper designed simulation test to research the change rule of of the amount of the fertilizer discharge with the influence factors and verified the results by bench test.The test results showed that the fitting slope of the variation curve of fertilizer discharge was selected to represent the fertilizer discharge flow. It was found that the amount of fertilizer discharge was regulated and there was a linear relationship between the discharge and the length of working groove and the rotation speed of the fertilizer discharging wheel. The linear fitting results showed that the correction determination coefficients were 0.994 and 0.990, respectively. The relative error between the test value and the simulation value was small, and the simulation test results were reliable. The coefficient of variation decreased by 6.5% on average compared with the outer trough wheeled fertilizer exhauster, which indicated the uniformity of fertilizer discharge was greatly improved. These reaults provided reference for innovative designing and theoretical research of fertilizer discharge device.
作者
顿国强
于春玲
郭艳玲
杨永振
叶金
纪文义
刘宇轩
DUN Guoqiang;YU Chunling;GUO Yanling;YANG Yongzhen;YE Jin;JI Wenyi;LIU Yuxuan(College of Mechanical and Electrical Engineering,Northeast Forestry University,Harbin 150040,China;College of Engineering,Northeast Agricultural University,Harbin 150030,China)
出处
《中国农业科技导报》
CAS
CSCD
北大核心
2020年第5期78-85,共8页
Journal of Agricultural Science and Technology
基金
国家重点研发计划项目(2018YFD0201004)
中央高校基本科研业务费专项(2572017BB10)
中央高校建设世界一流大学(学科)和特色发展引导专项资金暨双一流经费项目(41113278)
东北林业大学大学生国家级创新训练计划项目(201910225466)。
