沈阳农业大学学报2016，Vol.47Issue(5)：589-596,8.
农机触土部件前行阻力测试装置的设计与试验
Design and Experiment on Testing System for Operation Resistance of Soil Engaging Parts
摘要
Abstract
Resistance measurement and analysis are important for field farm machinery design, and the reliability and accuracy of testing apparatus are significant on the effectiveness of the result. A resistance testing system with high stability and accuracy was developed to study the drag resistances of soil engaging parts. To investigate whether the vibration produced in normal working of the testing device affecting its performance, A 3D model of the frame of the testing system was set up with SolidWorks and the modal analysis was performed with the finite element analysis software ANSYS-Workbench. The first six frequencies and corresponding modes of vibration were worked out. The results showed that the first six inherent frequencies distributed between 21-38 Hz, while the external excitation frequencies of the testing device were between 0.346-3.462Hz at forward speed of the machine of 0.1-1.0 m•s-1, far below the low-order inherent frequency of 21.778Hz, which effectively avoided resonance. Orthogonal experiment of three factors with three levels on drag of transplanter float was carried out to explore the structure reasonability of the testing device. The float model, weight and forward speed had significant effect on the sliding resistance and the optimal combination of the factors was determined as the minimum sliding resistance at forward speed of 0.4 m•s-1, weight of 0.7kg and with a bionic float model. This work provides methods for resistances tests of soil engaging parts of paddy field and dry land machinery.关键词
阻力/农机样件/测试装置/模态分析/性能试验Key words
resistance/parts of agricultural machine/testing system/modal analysis/performance test分类
农业科技引用本文复制引用
邬立岩,任文涛,焦志彬,宋玉秋,辛明金,刘翠红,孔爱菊,崔红光,齐胜,刘峰..农机触土部件前行阻力测试装置的设计与试验[J].沈阳农业大学学报,2016,47(5):589-596,8.基金项目
国家自然科学基金项目(51305282,51275319)；辽宁省高等学校杰出青年学者成长计划项目(LJQ2014071) （51305282,51275319）
