Design And Study On Standing Cotton Stalks Raking-film Machine With Wide Folding And Monomer Profiling

The plastic mulch technology is benefic to crop production.With the technology of keeping warming and moisture,it makes the crops grow in the North come true,effectively use of land resources and increase water utilization rate.It plays an important and positive role in dryland agriculture developing of China.Accompanied by the promotion of film-covering technique,the problem of “White pollution” had been brought.So as to recycle the film in time,the development of plastic film recycling machine had been carried out.By the research of existing residual film recovery operation situation of Xinjiang round field,the main trouble of film collector at present were got as follows: The raking film tooth can not simultaneously produce monomer collecting film of copying with different cotton fields terrain and lead to the low collecting rate;Poor unloading-film effect lead to much recycling residual film attach,block the spring-tooth components and directly affect the continuity collecting of film collector;Low recovery efficiency of collecting-film machine cannot be satisfied with the growing demand of farmers.In order to solve the existing problems effectively,a raking-film machine of wide folding and monomer profiling was designed.The research on theory design with the raking-film mechanism of monomer profiling,automatic unloading-film mechanism and wide-folding frame were developed in this paper basing on the statistic analysis breakage degree of residual film.Accord with the field experiment,the film recycling machine could meet working requirement of the cotton-field.Main research contents of this paper were studied as follows.The cotton plant pattern was researched and the plastic film of damaging degree was counted and analyzed.Accord with two experiment parameters,the damaging extent of plastic film and stretching velocity,were selected as the influence factors of test.The maximum load and breaking elongation were chose as the evaluation index of the experiment.The relationship between influence factors and test index was finally determined.According to the low recovery rate,the raking-film mechanism of monomer profiling which can simultaneously realize single-row recycling film of copying with the diverse rough terrains was designed.So as to confirm the operation parameters of the device of the collecting film,the experiment of the response surface was filled with 5 levels and 3 factors and accomplished by the soil bin trolley testbed with the spring tooth of the raking film.Three test parameters,comprising spring tooth number,test-car speed and spring tooth diameter,were chose as the influence factors of the testbed experiment.And collecting rate of residual film recycling was selected as the evaluation index of the test-bed experiment.Quadratic orthogonal rotation combination trial design was applied to build the second sequence polynomial and regressive model,which interpreted about the relationship between the experimental influence factors and evaluation index.Through using the data analysis software of Design-Expert 8.0.6,the matching mathematical regression pattern was developed,the relation of salient factors with regard to the property of experiment was analyzed,and the parameters of test were improved.The automatic discharging film device which could timely and continuously unload plastic film was carried out.And the Adams software was used to form the kinematics analysis.Based on the experimental method of quadratic orthogonal combination of response surface,the virtual tests were implemented.The length of unloading-film driving rod and driven rod were used as the design variables.The speed variationrate and acceleration rate of unloading-film pole tooth,the speed variation of raking-film spring tooth were selected as the optimization goal.The data analysis software was applied to analyze the relationship between design variation and optimal object,optimized structure parameters and determined the optimum-combination parameters of discharging-film equipment.The ultra-wide folding frame of the residual film recycling machine,which could improve the working efficiency and be convenient for road transport,was raised.Therefore,based on using Solid Works,the 3D parametric model for wide-folding rack was established.At the same time,the model was imported into ANSYS Workbench to the static characteristic analysis and to get the equivalence-stress,equality-displacement cloud atlas under the working condition.According to the result of finite element analysis of wide-folding frame suggested that meets the design requirements of strength and stiffness.And then,found on the Design Explorer modules of ANSYS Workbench Environment,DOE(Design of experiment)method is used.With section size of each beam of wide-folding frame as Design variables,the stress and displacement were regarded as constraints.Moreover,taking its quality for an indicator,the multi-objective optimization Design for the rack was accomplished.The results showed that the quality of frame is decreased by 10% after optimization and mechanical properties are good.The physical prototype of standing-cotton-stalks plastic film recycling machinery,which could achieve the functions of folding and monomer profiling,was processed and manufactured.By the field experiment and evaluation of residual film collector,the result shows that the film retrieving machine could meet the requirements of the used film recovery operation.