悬挂式全自动高速精密小区播种机的设计与试验OA

Aiming at the problems of low degree of automation,safety accidents caused by manned operation,low opera-tion speed and poor operation quality,a new architecture of 2BXG-4A suspended automatic high-speed precision plot seeder was innovatively designed.By analyzingthe working process of the single-row seeders component,the key factors affecting the improvement of machine operation speed were determined.With the help of the working sequence diagram of single/double-row seeders components,the structural advantages of the electric drive dual-row metering device were com-pared and analyzed.The structure of the electric flip-type independent seed charging chamber with the bottom plate was adopted to solve the problem of rapid seed cleaning and mixing by means of physical isolation.The relationship between the maximum operating speed of the machine,the minimum plant spacing and the maximum speed of the stepper motor was analyzed,and the transmission ratio of the bevel gear pair of the seed metering device was determined.By stacking the five-layer push units and controller combined with multi-source sensors to achieve continuous automatic seed supply,the automation of the whole machine was improved.The field test results showed that the maximum operating speed of the machine could reach 3.0 km/h,and the machine could realizethe change of seeds without stopping the machine.The qualified index of seed spacing was 96.9%,the consistency of sowing depth was 95.3%,and the mixing rate was 0%.There was no need for random auxiliary seed supply personnel,which met the design requirements.