| Agaricus bisporus is one of the most abundant and widely cultivated edible mushrooms in the world.Due to its high nutritional and economic value,it is planted worldwide,with China ranking first in terms of planting area and export volume.At present,the research on the harvesting machine for Agaricus bisporus in China is in a blank stage,and the harvesting operation still relies on manual labor.To address the above issues,designing a harvesting machine for Agaricus bisporus instead of manual harvesting is beneficial for saving labor costs,improving harvesting efficiency,and promoting agricultural modernization.This article first investigates the current situation of automated mushroom harvesting at home and abroad.Through the analysis of the characteristics of various models,it is concluded that there are certain research results on mushroom harvesting robots both domestically and internationally,but only in the experimental stage.The feasibility of promoting the dual mushroom harvester in China is discussed.The material characteristics of agaricus bisporus were measured,and the design principles of the entire machine were determined.A reciprocating cutter was used and a crank connecting rod mechanism was used for transmission.Determine the basic parameters of the harvester based on the production conditions of Agaricus bisporus.On this basis,the structural design of the main device of the Agaricus bisporus harvester was carried out and the three-dimensional modeling of the entire machine was completed using Solid Works.The statics analysis of the rack and the modal analysis of the movable knife rest were completed by using the ANSYS simulation software.The analysis results showed that the maximum stress of the rack was less than the yield strength of the materials used,the maximum deformation produced by the rack was less than its allowable deformation,the movable knife rest would not have resonance and excessive deformation during the cutting process of Agaricus bisporus,and the rack and cutter met the use requirements.Dynamic simulation analysis was conducted on the cutting process,and the equivalent stress cloud map,deformation cloud map,and cutting force curve of the agaricus bisporus cutting process were obtained.A three factor and three level orthogonal simulation experiment was designed to investigate the effects of different operating speeds,reciprocating speeds,and the distance between the cutting blade and the bacterial bed on the maximum cutting force.A mathematical model was established to investigate the interaction between the influencing factors and the maximum cutting force.The optimal working parameter combination was obtained as follows: operating speed 0.17m/s,reciprocating speed 0.92m/s,and the distance between the cutting blade and the bacterial bed19 mm.Finally,a prototype of Agaricus bisporus harvester was processed and manufactured.The optimal working parameters were used for on-site testing to verify the operating effect of the prototype.The average Agaricus bisporus crushing rate after operation was 11.3%.The experimental results showed that the Agaricus bisporus crushing rate was low and basically met the design requirements.Provide theoretical basis and new directions for the field of mechanized harvesting of edible mushrooms. |
