In conjunction with the working characteristics of the high-clearance wheeled sprayer and the benefits of the closed hydraulic system,a series of reasonable working parameters should be established,and a hydraulic sys...In conjunction with the working characteristics of the high-clearance wheeled sprayer and the benefits of the closed hydraulic system,a series of reasonable working parameters should be established,and a hydraulic system that fulfills the requisite specifications should be designed.The AMESim software model is employed to construct a closed hydraulic transmission system,and the simulation analysis is then performed according to the data of hydraulic components.According to analysis results,the prototype can be optimized and upgraded,and a verification test is further carried out.The test results demonstrate that the designed closed hydraulic transmission system meets the actual working requirements of the high-clearance wheeled sprayer and provides a stable experimental platform for intelligent control of agricultural machinery.展开更多
A large high-clearance self-propelled sprayer chassis was designed according to the requirements of the sprayer’s driving operation and the overall goal.The structural characteristics and working principle of the cha...A large high-clearance self-propelled sprayer chassis was designed according to the requirements of the sprayer’s driving operation and the overall goal.The structural characteristics and working principle of the chassis drive system,suspension system,track adjustment system,and frame were analyzed.A finite element analysis of the frame was carried out under four extreme conditions:full load bending,full load torsion,full load emergency braking and full load emergency turning.Under these four conditions,the maximum stress values of the frame were 149.45 MPa,219 MPa,151.44 MPa,and 123.27 MPa respectively,and the maximum strain values were 1.12 mm,2.22 mm,0.95 mm,and 1.16 mm respectively.A theoretical analysis of the stability,steering ability,and obstacle navigation of the sprayer chassis was conducted.The results showed that the upper angleθlim,lower angleθ׳lim and lateral limit tumbling angleφlim of the sprayer chassis were 50.1°,30.0°and 35.3°respectively.The minimum turning radius of the chassis was 5816 mm,and the minimum turning width was 4113 mm.The maximum obstacle crossing heights of the front and rear wheels were 466 mm and 457 mm.The theoretical analysis showed that the designed chassis met the field management operations of large plots.A field experiment of the high-clearance self-propelled sprayer chassis at full load was conducted.The experimental results were consistent with the theoretical analysis results.The sprayer chassis not only good handling stability but also good ride comfort.The results of this study provide references for the design of high-clearance self-propelled sprayer chassis.展开更多
基金Supported by 2023 Xinjiang Uygur Autonomous Region R&D and Promotion and Application of Key Technologies of CNC Sprayer for Seed Corn(2023NC010).
文摘In conjunction with the working characteristics of the high-clearance wheeled sprayer and the benefits of the closed hydraulic system,a series of reasonable working parameters should be established,and a hydraulic system that fulfills the requisite specifications should be designed.The AMESim software model is employed to construct a closed hydraulic transmission system,and the simulation analysis is then performed according to the data of hydraulic components.According to analysis results,the prototype can be optimized and upgraded,and a verification test is further carried out.The test results demonstrate that the designed closed hydraulic transmission system meets the actual working requirements of the high-clearance wheeled sprayer and provides a stable experimental platform for intelligent control of agricultural machinery.
基金The authors acknowledge that this work was financially supported by the Key Research and Development Program of Shaanxi Province(No.2019ZDLNY02-01)the China Postdoctoral Science Foundation(No.2018M643744).
文摘A large high-clearance self-propelled sprayer chassis was designed according to the requirements of the sprayer’s driving operation and the overall goal.The structural characteristics and working principle of the chassis drive system,suspension system,track adjustment system,and frame were analyzed.A finite element analysis of the frame was carried out under four extreme conditions:full load bending,full load torsion,full load emergency braking and full load emergency turning.Under these four conditions,the maximum stress values of the frame were 149.45 MPa,219 MPa,151.44 MPa,and 123.27 MPa respectively,and the maximum strain values were 1.12 mm,2.22 mm,0.95 mm,and 1.16 mm respectively.A theoretical analysis of the stability,steering ability,and obstacle navigation of the sprayer chassis was conducted.The results showed that the upper angleθlim,lower angleθ׳lim and lateral limit tumbling angleφlim of the sprayer chassis were 50.1°,30.0°and 35.3°respectively.The minimum turning radius of the chassis was 5816 mm,and the minimum turning width was 4113 mm.The maximum obstacle crossing heights of the front and rear wheels were 466 mm and 457 mm.The theoretical analysis showed that the designed chassis met the field management operations of large plots.A field experiment of the high-clearance self-propelled sprayer chassis at full load was conducted.The experimental results were consistent with the theoretical analysis results.The sprayer chassis not only good handling stability but also good ride comfort.The results of this study provide references for the design of high-clearance self-propelled sprayer chassis.
