Design and experiment of electric-driven air-suction peanut precision seeder
Aiming at the problem of poor sowing quality caused by low single grain rate,irregular ridge shape,and uneven soil coverage of existing peanut seeders,the electric-driven air-suction precision seeding method based on active ridging scheme was proposed,and an electric-driven air-suction peanut precision seeder was designed,which could complete the functions such as active ridging,spraying,precision sowing of single peanut seeds,and covering soil on film,etc.The basic structure and working process of the entire machine were analyzed and determined.Design and experiment were conducted on the electric-driven hill-drop device and active ridging device.The results showed that the single seeding rate of the electric-driven hill-drop device increased by 0.93%compared to the mechanical hill-drop device.The field performance test results of the prototype showed that the main technical indicators of the electric-driven air-suction peanut precision seeder were superior to the evaluation requirements in terms of ridge quality,sowing uniformity,and sowing depth consistency.Among them,the qualified rate of ridge height was greater than 85.0%,the qualified rate of ridge top width was greater than 70.0%,the qualified rate of ridge spacing was greater than 76.0%,the average of single seed rate was greater than 90%,and the qualified rate of sowing depth was greater than 90%.The electric-driven air-suction peanut precision seeder met the design requirements for single seed precision sowing.
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