可变距多路豆类精准播种机的设计与试验OA

In response to the problems of low efficiency,poor accuracy and uneven spacing of traditional bean seeders,a self-propelled variable distance multi-channel bean precision seeder has been designed.The functional requirements,overall structure,performance parameters,and working principle of the machine have been clarified.The on-demand unit and multi-channel precision seeding device were designed.The number of dial holes was designed to be 18,the dial rota-tion speed was 150-231 r/min,the plow head height was 200 mm,and the plow head insertion angle was 19°-23°;The driving power consumption of the machine walking,the loss of the transmission system,the power consumption of the inte-grated operation of trenching and covering soil,and the driving power consumption of the seed leakage device were ana-lyzed.The total power consumption of the seeder was designed to be 1 kW.The performance of the machine was tested using regression analysis and response surface analysis in Design Expert software.A mathematical model was established to analyze the impact of three factors on the experimental indicators.The results showed that the optimal operating parame-ters of the machine were as follows:the working speed of the dial was 184.51 r/min,the walking speed was 3.23 km/h,and the aperture of the dial was 13.56 mm.At this time,the miss rate of the seeder was 3.75%.The results showed that the optimal operating parameters of the machine were as follows:dial working speed of 184.51 r/min,walking speed of 3.23 km/h,and dial aperture of 13.56 mm.At this time,the seed leakage rate of the seeder was 3.75%.The contribu-tion of each factor to the seed leakage rate was as follows:dial working speed>seeder walking speed>dial aperture.Field experiments indicated that all indicators met the design requirements and the operational performance was stable.