Design And Optimization Of Plastic Film Residue Collector Unloading Membrane Automaticlly

Although film mulching technology has greatly promoted the development of agriculture,it is difficult to decompose in the soil for a long time because the film can not be recycled in time and effectively,resulting in the serious destruction of large tracts of arable land.More serious many areas have formed a "white pollution"phenomenon.In the context of current national conditions,the low efficiency of artificial harvesting,high labour costs and lack of technology make it difficult to replace mulches with biodegradable mulches in a short time and are widely promoted and used,thus addressing the above problems,In this paper,a kind of retracer of residual film of tillage layer before sowing after tillage is designed,which has the advantages of reliable working performance,low efficiency and low cost,is in line with the national conditions,and promotes the development of agricultural economy.The main design contents are as follows:(1)On the one hand,film mulching has promoted the development of agriculture.On the other hand,when the mulching film can not be recovered in time,it brings the pollution to the agricultural environment,which results in the destruction of the soil and the significance of recovering the residual film.Through consulting the literature and related books,the paper studies the development of the film recovery machine at home and abroad,and discusses the future development and trend of the residual film collector,as well as the methods and suggestions to solve the problem.Based on a large amount of research data,In order to compare the advantages and disadvantages of the residual film pick-up device,analyze the reasons that affect the function of the machine,design the whole structure of the residual film collector,and improve the picking effect of the sheet broken film in the plough layer,the research plan of the residual film recovery machine has been established.Complete the working process of picking up the residual film.(2)The 3D model of the residual film recovery machine is established firstly,and the working process of the machine and the model and assembly relation of the parts are determined.For the design of key components,the slope angle parameters and structural dimensions of the film shovel are determined,and the finite element analysis is carried out to determine the maximum stress and displacement of the shovel,so as to ensure that the design structure and the selected materials meet the needs.The whole structure of the frame is designed and the finite element analysis is carried out to ensure the rationality of the structure design and whether it meets the strength requirements,and the picking mechanism is designed to study the dynamic characteristics of picking teeth,and to analyze the movement path and working length of picking teeth.The rotation speed of the projectile teeth is derived when the residual film is not leaking.Through theoretical analysis and field test,the parameters of pick-up device are optimized to determine the best combination of the picking mechanism speed,the depth of the pick-up bullet teeth,the axial direction and the circumferential interval of the pick-up cartridge teeth;(3)Finished the manufacture of the residual film recovery machine,and carried out the field test in Aksu 6 regiment to verify the rationality of the structure design,the reliability of the work and the optimum working parameters.The results showed that when the speed of picking mechanism was 30 r/min,the depth of pick-up tooth was 120 mm,the axial interval of pick up tooth was about 35 mm,and the circumferential interval of pick up tooth was about 120mm,the picking rate could reach 88%,and the picking effect of residual film was better.