摘要
为探明深施型液态施肥机扎穴机构工作参数对作物损伤率、穴口宽度以及穴距的影响机理,设计了一种斜置式非规则齿轮行星轮系扎穴机构。通过联轴器使扎穴机构满足斜置式扎穴状态,使其扎穴轨迹平面与垄面呈一定角度变化,实现斜入式扎穴。采用二次回归正交旋转组合设计进行最佳工作参数试验,以行星架转速、前进速度和斜置角度为试验影响因素,以穴口宽度、穴距和作物损伤率为优化指标,利用响应曲面方法进行优化,运用DesignExpert 8.0.10软件对试验数据进行分析,得到因素与指标之间的回归方程及响应曲面图。试验结果表明,当行星架转速75.0 r/min、前进速度0.48 m/s、斜置角度23.3°时,穴口宽度为40.2 mm,穴距为220 mm,作物损伤率为0.33%,此时机构性能最优,应用此参数组合进行斜入式扎穴测试验证,验证了其合理性。
Deep-fertilization liquid fertilizer applicator with high efficiency,low price,easy operation and environment protection attracts more and more concerns,which can decrease fertilizer volatilization and increase crop yield and quality.Aiming to explore the influence mechanism that working parameters of pricking hole mechanism with crop damage rate,hole size and hole distance,a new type of non-circular gears planetary system of pricking hole mechanism for oblique type of liquid fertilizer applicator for deepinto type was designed.Through coupling part let pricking hole mechanism meet prick hole condition for oblique type,to make the trajectory of pricking hole mechanism side and ridge side reach the changes of different angles,it was achieved to prick hole for oblique type based on the above conditions.Kinematics model was set up,the influence relationship was obtained between the goals and working parameters.Test-bed experiment of working parameters was carried out.The design of quadratic regression rotational quadratic orthogonal experiment was used,with the speed of planet frame,the forward speed and oblique angle as the test factors,the hole mouth width,the hole distance and the rate of crop damage as the test optimization index.The optimization of response surface method was used.Experimental data was analyzed by Design-Expert software so as to establish the regression equation and obtain the diagram of response surface.Test results showed that when the speed of planet frame was 75.0 r/min,the forward speed was 0.48 m/s and the oblique angle was 23.3°,the hole mouth width was 40.2 mm,hole distance was 220 mm and rate of crop damage was 0.33%,the performance of mechanism was optimal under above conditions.The test was verified by applying these parameters to validate its rationality.
出处
《农业机械学报》
EI
CAS
CSCD
北大核心
2017年第6期66-70,共5页
Transactions of the Chinese Society for Agricultural Machinery
基金
国家自然科学基金项目(51675093)
东北农业大学青年才俊项目(14QC34)
关键词
深施型液态施肥机
扎穴机构
斜入式扎穴
非规则齿轮
优化
liquid fertilizer applicator for deep-into type
pricking hole mechanism
pricking hole for oblique type
non-circular gear
optimization
