Abstract:A three-fold spraying arm structure was designed aiming at the problems that the single nozzle sprinkler car of the reel sprinkler was high hydraulic power consumption,and the truss type sprinkler car could not be automatically folded, meanwhile the overall dimensions and the connection of each member were determined. Further, the dynamics equation based on Lagrange′s method of multi-rigid-body dynamics theory was established. The dynamic characteristics of the structure driven by sine function were analyzed using ADAMS virtual prototyping technology. The simulation results show that the folding movement of the structure is stable. After completely tucked inside bar folding angle is 86.2°, there appears the maximum stress of mutations at the fold angle of 85.6°. At this time, the maximum thrust of the hydraulic cylinder output is 2 800 N, and the maximum stress of each rod is 10 MPa, which is far enough to meet the requirements of tensile strength of 130 MPa.This shows that it has a better folding effect, and each rod meets to the structural strength requirements, which provides the basis for the rationality of the design of the three-fold spraying arm structure and the feasibility of machining physical prototype.
余聪*, 汤玲迪, 汤跃. 新型三折叠喷洒臂结构设计及动力学仿真[J]. 排灌机械工程学报, 2018, 36(8): 696-701.
YU Cong*, TANG Lingdi, TANG Yue. Design and dynamics simulation of a new three-fold spraying arm structure. Journal of Drainage and Irrigation Machinery Engin, 2018, 36(8): 696-701.
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