Design And Performance Study Of Self-propelled Device Of Blueberry Harvester

Blueberry is one of the five healthy fruits recommended by the World Food Organization.With the rapid development of the blueberry industry,mechanical harvesting of blueberries will become an inevitable trend of development.Foreign countries have designed a self-propelled self-propelled blueberry harvesting machine,but the import price of the machine is expensive,and the specifications cannot be effectively matched with the domestic blueberry planting mode.Although the domestic blueberry harvester has been developed,it is densely planted for domestic blueberries.There are certain difficulties in environmental operations.In view of the above problems,this paper uses the combination of theoretical analysis,computer simulation and experimental research to design and study the self-propelled device of blueberry harvesting machine.The self-propelled device for blueberry harvesting machine suitable for the planting environment of blueberry plants in China was developed to solve the problems faced by domestic mechanical harvesting of blueberries.Structural design and driving performance analysis of the blueberry harvester self-propelled device.Firstly,analyze the domestic agronomy of blueberry planting,determine the design goal and overall design scheme of the self-propelled device,Secondly,analyze the driving stability and passability of the self-propelled device,and analyze the stability of the operation including the anti-tilting ability and the anti-sliding ability analysis.Through performance analysis,including gap failure and obstacle-obstacle capability analysis,the key structural parameters affecting driving performance are obtained,which provides a theoretical basis for the self-propelled device structure design.Finally,the self-propelled device frame structure,steering structure and driving mode are analyzed and designed.Complete the overall structural design of the self-propelled device.Computer simulation analysis of the designed self-propelled device.Firstly,it is determined that the self-propelled device is planned to be equipped with the harvesting system.Secondly,the finite element model of the frame is established,and the static characteristics of the two conditions of full load bending and full load torsion are analyzed,and the structural strength and stiffness under full load are determined.Nuclear,the frame structure bears weak parts,load ratio and torsion resistance,and provides technical support for the subsequent prototype trial improvement.Finally,the dynamic simulation equivalent model is established to simulate and analyze the driving stability and obstacle performance.Focusing on the analysis of slope anti-rolling and obstacle-obstacle performance,the slope limit and the obstacle height of the slope of the self-propelled device are obtained.Physical prototype trials and field performance tests were carried out on the blueberry harvester.The test plan includes driving speed,minimum turning radius,lifting performance,driving stability(anti-rolling,anti-slip performance)and passing performance(over obstacle height),test results Analysis to verify the rationality of the structural design of the self-propelled device.The self-propelled device of blueberry harvester designed in this paper provides scientific reference and technical support for the improvement of domestic mechanical harvesting blueberry equipment technology,which has important theoretical significance and application value.