Design And Simulation Analysis Of Vibration Harvesting Equipment For Ruditapes Philippinarum

The Manila clam(Ruditapes philippinarum)is one of the economical clams for large-scale farming of tidal flats in China.The clam harvesting is an important part of large-scale farming.At present,there are many problems such as low harvesting efficiency,high labor intensity,high cost and serious environmental damage in clam In view of the above problems,this paper designed and completed a vibration harvesting equipment for clam,and carried out simulation research on key components.Aiming at the technical requirements of large-scale harvesting,combined with the biological characteristics of harvesting and the mechanical properties of tidal flats,the different harvesting techniques were compared and analyzed,and a technical scheme combining vibration screening and rolling brushing was proposed.It can achieve the integration of looseness of the tidal flats,harvesting and transportation of the clams.The vibration harvesting system of clam was designed,the structure of rolling steel brush and the secondary vibrating screen were established,and the screening model of the clams was established.The technical parameters and structural dimensions of the screening were determined,and the conveying mechanism,the steering mechanism and the working surface height adjustment mechanism were designed and calculated,and the reasonable selection of the drive mechanism and the checking of related parts were completed.The SolidWorks software was used to model the whole machine of the harvesting equipment.The Simulation module was used to analyze the static of the rolling steel brush and the main transmission shaft.The results showed that the maximum stress of the steel brush and the transmission shaft are less than the yield limit of the above material,which satisfies the design.In addition,the ADAMS software was used to simulate the kinematics of the vibrating screen.The effects of vibrating screen inclination angle,pendulum length,connecting rod length and eccentric length on the depth of penetration of the tidal flats were discussed.It is found that the length of the pendulum is in the range of 160mm~300mm,and the penetration depth decreases with the increase of the length of the pendulum;the inclination angle of the vibrating screen is in the range of 5°~15°,and the penetration depth decreases linearly with the inclination of the vibrating screen.The length of the connecting rod is in the range of 550mm~580mm,and the penetration depth increase with the decrease of the length of the connecting rod;the length of the eccentricity is in the range of 10mm~15mm,and the penetration depth decreases as the length of the eccentricity decreases.Therefore,the screen inclination angle,pendulum length,the length of the connecting rod and the eccentricity of the final vibrating screen are respectively set to10°,240 mm,580mm,10 mm.In this paper,the harvesting technology combined with steel brush and vibrating screen is used to simulate and design the vibration harvesting equipment of clam,which can achieve automatic harvesting in the tidal flat,which provides an important reference for mechanized harvesting of buried shellfish.