振动挖掘式黄芪收获机设计与试验OA

In view of the problems such as insufficient excavation depth of existing traditional Chinese medicine harvesters to meet the requirements of Astragalus membranaceus harvesting,high operational resistance and poor separation effect of broken soil,a vibration excavation type Astragalus membranaceus harvester is designed.The prototype mainly consists of a vibration excavation device,a stem soil separation device,and a conveying and screening device.According to the motion analysis of the vibration excavator shovel,the vibration frequency and amplitude of the excavator shovel,the size of the support frame,and the parameters of the eccentric wheel were determined.By analyzing the stress of the stem soil mixture,the vibration frequency and effective length of the screen surface of the vibrating screen was designed.A filed experiments was conducted to verify the operational performance of harvesting prototypes.The results showed that the average excavation depth of the harvested prototype was 409 mm,the average damage rate of Astragalus membranaceus root and stem was 2.51%,the average excavation rate was 97.5%,and the maximum diameter size of the broken soil block was 17 mm.The prototype runs smoothly during the experimental process,and can achieve the excavation of longer rooted Chinese medicinal materials such as Astragalus membranaceus,as well as the separation and harvesting of stem soil mixtures.The study can provide some reference for the design of Chinese medicine harvester.