Comprehensive Study On Performance And Scale Of Mechanical Cotton-picking Mechanism Based On Spindle Trajectory

This paper first analyzes the structural composition and working principle of the horizontal picking type cotton picker,introduces the various components of the cotton picking machine in detail,and systematically analyzes the core picking mechanism-picking head structure and principle of the cotton picker.The picking drum is systematically sorted and summarized from the power input to the power output.The ADAMS motion simulation software was used to simulate the relative motion trajectory and absolute motion trajectory of the cotton picker drum,and the acceleration of the horizontal coordinate system and the absolute coordinate system of the picking machine were analyzed during the three working processes of the picking machine.Select a point at the end of the picking point as the marking point,set the working conditions of the drum,and generate the ground trajectory of the picking in the cotton field and the relative trajectory of the picking around the drum through the software,and divide the ground trajectory into 12 Part of the analysis,and the corresponding part of the ground track and color cotton work process,to prepare for the next comprehensive study of the ingot trajectory.After the simulation of ADAMS software,the relative trajectory data of the spindle is exported,and the exported data is imported into the imported matlab to be fitted into an irregular elliptic curve.The target parameter points are extracted on the elliptic curve,and the main head of the picking head drum is controlled.The transmission component,the guiding groove,the crank,the spindle tube,and the turntable adopt the mechanism analysis method and the complex vector method to calculate the input and output angles of the picker.Establish the trajectory deviation measurement function of the spindle,import the extracted trajectory data into matlab,input the trajectory deviation function,set the deviation amount,set the genetic algorithm parameters,and use the genetic algorithm tool in Matlab to write the M program solution,and obtain the iterative operation.In the case of an optimal solution and all existing ingot trajectory curves within the range of trajectory deviation,the problem of the relative trajectory of the ingot is completed.A comprehensive analysis of the surface properties of the ingot is carried out,and the main failure modes of the ingot are: the tooth surface wear and the tooth fracture are systematically summarized.Compared with the surface modification of the ingot by the traditional thermal processing and plasma spraying technology,the plasma spraying technology has a significant improvement in the hardness and wear resistance of the ingot.Through the comprehensive study of the scale of the ingot,the reasonable range of the dip angle of the ingot is established,and the system innovative design method and the design criteria to be followed are systematically summarized.According to the principle of innovative method,the variation of the tooth shape of the ingot is systematically evolved,and finally a new form of ingot is combined.The simulation of the new shape ingot is simulated by the UG three-dimensional modeling software,and the friction of the ingot in the cotton field is established.The model uses ANSYS finite element analysis software to analyze the stress and strain of the new shape,displacement vector analysis,and screen out the alternative mechanism of the ingot,and complete the innovative design of the ingot.