Hydraulic System Design And Simulation Research Of High Ground Gap Plant Protection Machine

At present,the agricultural plant protection machinery used for field management in our country is constantly developing,especially the high-gap self-propelled plant protection machine integrating pollination,fertilization and spraying is widely used.It has a wide range of application,high working efficiency,large spray volume,reasonable dosage application,and high economy.It is an ideal farm plant protection machinery.As an important plant protection machine for spraying and fertilizing crops,the high-gap self-propelled spraying machine is very important for promoting the stable development of agriculture in China.In this study,through extensive reading of literature related to high-gap plant protection machines and plant protection machine hydraulic technology,in-depth study and understanding of the application of hydraulic technology in plant protection machinery,proficiency in plant protection machinery hydraulic system knowledge,the whole new generation of high-gap plant protection machine hydraulics system design.Combining the requirements of the southern paddy field planting and the operation requirements of the high-gap self-propelled plant protection machine,considering the needs of driving and steering operations,on the basis of the synchronization scheme demonstration,two walking hydraulic drive systems with the same side motor in series and four motors in parallel walking are designed and Two full-hydraulic steering systems with dual-cylinder steering and four-cylinder steering are analyzed,and the principles and characteristics of the hydraulic system are analyzed.The four-motor parallel running hydraulic system and the four-cylinder full hydraulic steering system are selected.The dynamics and kinematics analysis of the walking and steering system is carried out,and the component calculation and selection of the walking system and steering system are completed.Based on AMESim hydraulic simulation software,an element simulation model was established for important components in the walking system and steering system.On this basis,a simulation model for the hydraulic driving system and steering system of the plant protection machine was established.Firstly,the two walking system solutions are simulated and analyzed.The simulation research shows that the same-side motor series walking system solution cannot meet the walking requirements and the synchronization is poor;the four-motor parallel walking solution can meet the walking requirements,and the walking synchronization performance is good,which meets the design requirements.Simulation analysis of the steering performance of the full hydraulic steering system under different steering wheel speeds and different loads.The steering system meets the design requirements and the cylinder synchronization is good,indicating that the designed full hydraulic steering system can meet the design requirements.The experimental research on the high ground clearance self-propelled plant protection machine was carried out,and the test schemes of the walking hydraulic system and the full hydraulic steering system were designed.The test verified the dynamic performance of the walking system,and the test results were basically consistent with the simulation results,and the performance of the walking system was in accordance with the design.Claim.In addition,the steering system test results show that the steering performance is better,the synchronization performance is higher,and the steering system meets the design requirements.