【摘要】 为改善圆盘开沟器的振动性能,建立了圆盘开沟器的动力学振动模型,利用MATLAB软件对该模型进行仿真分析。结果表明:当播种机前进速度由2.65 m/s提高到4.15 m/s时,开沟器谐振振幅由37.2 dB增加到38.1dB,谐振频率由14.5 Hz上升到19.6 Hz。田间试验结果表明,相同速度条件下,安装液压阻尼器可提高开沟器与土壤作用时的减震性能,同时播种覆土均匀性也得到改善。更多还原

【Abstract】 In order to improve the vibration characteristics of disc opener, the dynamic vibrayion models of disc opener was developed and simulated by means of MATLAB.The simulation results showed that with the working speed increased from 2.65?m/s to 4.15?m/s,the resonance amplitude was increased from 37.2?dB to 38.1?dB and resonance frequency increased from 14.5?Hz to 19.6?Hz.The field experiments showed that installing damper will improve the performance of reducing effect of seismic action during the interaction of the soil and the opener at the same operation speed,and evenness of seeding depth will also be improved.更多还原