Design And Simulation Analysis Of Hydraulic System Of Camellia Oleifera Picking Arm Based On AMESim

Mechanized picking of Camellia oleifera fruit is one of the important key technologies for the harvest of Camellia oleifera fruit.As the utilization rate of Camellia oleifera fruit is getting higher and higher,the state pays more attention to the planting and harvesting of Camellia oleifera fruit,and the state has issued many preferential policies for the majority of tea farmers to understand,so that they are more confident to manage the growth of Camellia oleifera fruit.And picking can also guarantee the standard of living of tea farmers.But the method of picking camellia fruit restricts the efficiency of harvest and the development of the industry.At present,the method for tea farmers to pick camellia fruit is manual picking,picking a ladder or shaking branches to pick camellia fruit.This method is labor-intensive,low-efficiency,high-harmful,and requires a high price to hire farmers to cooperate in picking.The machinery adapted to the camellia orchard is used for mechanical picking.This article designed a set of hydraulically vibrating picker for the biological characteristics of camellia oleifera fruit and analyzed the hydraulic components and key parts,and made a prototype with Anhui Ruihui Transportation Machinery Manufacturing Co.Uncle Lei Camellia Planting Base,Yongzhou City,Hunan Province to conducted a field trial.The main research contents are as follows:(1)Firstly,through online search and inquiries to the fruit farmers to understand the time of the flowering period of camellia oleifera,then use the measuring tool to measure the pedestal tension,pedicle torque and the line spacing and plant spacing between the camellia oleifera trees,and record and analyze the data to get the pedicel The average tensile force is 28 N,and the magnitude of the tensile force decreases with the increase of fruit maturity.The measurement of row spacing and plant spacing provides a reference for the overall size of the picker.The final overall size is width×length×height(1.5m×3m×2.8m).(2)According to the picking needs of Camellia oleifera fruit,the whole machine model was drawn using CATIA software,a prototype was made,and the accuracy of the scheme was verified through experiments to determine the size of each component.A single-piston hydraulic cylinder size was designed for the role of the hydraulic cylinder on the main arm,The vibration motor of 0.37 KW is selected through calculation(3)According to the working principle of the vibrating oil tea fruit picking machine,the hydraulic cylinder and hydraulic system of the picking device are combined through the oil pipe,and the principle diagram of the entire hydraulic system is drawn using Microsoft Visio software,and the working cycle of the hydraulic system is explained.The main control elements of the hydraulic system are designed and selected,and the strength of the hydraulic cylinder is calculated in <,and the hydraulic cylinder is stable and reliable.(4)According to the hydraulic system diagram of Camellia oleifera fruit picking machine,the hydraulic system simulation platform is built using AMESim software,and the mathematical model and parameters are given at the same time,and finally the simulation is performed to obtain the analysis results.The displacement of the hydraulic cylinder Ⅱ is Smax=0.39 m,the maximum speed is Vmax=0.047m/s.Through field tests and tests,we know that the working conditions of the three hydraulic cylinders meet the test requirements,and the efficiency of comparison with manual picking is more than 3 times faster than manual.The efficiency of the picking machine is 96.4% through the orthogonal test method,which does not affect the fruit setting rate in the coming year,and the design meets the requirements.