The Design And Test Of Key Components Of Camellia Oleifera Picking Machine

In recent years,tea oil is very popular in market because of it's superior comprehensive utilization value.However,camellia oleifera fruit as the raw material,it's harvest link is an extremely original state(basically rely on labor),which has the disadvantages of high labor intensity,low picking efficiency and high labor cost.It has seriously restricted the development of camellia oleifera industry.Thus,if camellia oleifera industry wants to realize modernization development,it is necessary that achieve mechanization picking,and the top priority is that the research of picking part.This thesis points at the camellia oleifera seeds of the orchard of Hepeng town,Shucheng county,which designs and researches a key part in camellia oleifera's picking.The main content of the paper is as follows(1)Firstly,based on the LabVIEW virtual instrument technology,a test bed for measuring the fruit stalk separation force of Camellia oleifera was designed,and the correlation between the fruit stalk separation force and the three factors(the diameter of the fruit handle,the pulling force angle and the maturity)was investigated.At the same time,several experiments were carried out by the control variable method.It was found that the different pulling force angles had great influence on the size of the fruit stalk separation force of Camellia oleifera.Based on this point,the design principle of the key components was determined.(2)Based on the result that the pulling force angle of the second chapter is smallest in the vicinity of 90,the horizontal tree crown vibration is used as the basic principle of the picking mechanism,and the Pro/E is used to design a three dimensional design for the test picking device of Camellia oleifera.At the same time,the static analysis and modal analysis are carried out on the vertical axis of the supporting part of the picking mechanism by ANSYS.The stress and strain of the vertical axis and the first six natural frequencies are calculated,and the modal test is carried out to ensure the reliability of the results.It provides a scientific theoretical basis for the structural design of vertical shaft and the selection of processing materials,so as to avoid damage of the test device in operation.Finally,the relevant design of the transmission system is completed by calculation.(3)The 3D model of picking and picking device is imported into ADAMS software for kinematics simulation.In the process of simulation,the parameters of amplitude,tapping rod material and working frequency are adjusted,and the simulation curve of the numerical change of the inertia flapping force on the flapping rod under different parameters is drawn by the post processing module,and the change of the force value is displayed intuitively.Thus,the field test reduced the amount of tasks and provided a clear direction for testing.(4)Design field trials,determine the criteria for picking performance,carry out orthogonal test and single factor analysis.Finally,the best combination of factors was obtained,namely,the operation time was 60 s,the working frequency was 20.3Hz,the amplitude was 95 mm,and the rod material was nylon.