Optimal Design And Experiment Of Horizontal Banana Straw Crushing Machine

Hainan Province is a major banana planting province.When bananas are harvested every year,a large amount of banana stalks are left in the fields.Conservation farming has always been the direction of agricultural development advocated by the country,and the reasonable treatment of banana straw is a big driving force for the development of conservation farming.The processing method of banana straw has evolved from the traditional centralized incineration,accumulation and decay,to the idea of comprehensive utilization of straw,which gave birth to the way of mechanized return to the field,the design of straw fiber extraction technology and the research and development of related fiber extraction machines,and the development of green fodder storage machines.The research and development and the production of biogas have greatly reduced the pollution of the air and soil environment caused by the traditional banana straw processing methods.The transformation of the straw processing methods has led to a significant increase in the income of banana growers in all aspects.This paper mainly launches the research of mechanized return to the field.On the basis of the previous generation 1GHXJ-180 A horizontal banana straw crushing and returning machine,the structural innovation and the change of crushing ideas are carried out to solve the entanglement of the banana straw crushing machine in the operation process.Questions,the main contents of the research include:Study on the biomechanical properties of banana straw.The purpose of basic research on the crushing object is to explore the relationship between the biological characteristics of banana straw fibers and the parameters of the key components of the crushing machine,such as the influence of the straw shear strength and the distribution of fibers inside the stalk on the crushing effect.Combining the mechanical test of banana straw samples and further research on the crushing characteristics,it is preliminarily determined that the crushing blade is Y-shaped.The structure design of the whole machine and the optimization of the frame for returning to the field.Based on the horizontal straw crushing and returning frame,the whole structure is mainly composed of five important parts: three-point suspension device,frame,transmission device,crushing device and anti-wrapping device.In the previous generation of 1JGHXJ-180 A horizontal and 1JHXJ-160 C vertical pulverizers in the test process,the new machine developed in this paper needs to optimize the design goals,and the overall structure design and modal analysis are described The theory has carried on the optimization analysis to the frame,finally confirmed the frame structure.Design and analysis of crushing device.Determined the structural design of the crushing cutter shaft,the arrangement of the blades on the cutter shaft,and theoretically analyzed the force of the cutter shaft;determined the position parameter design between the key components,and carried out the structure of the crushing cutter and the anti-wrapping cutter The design and key parameters are determined to realize the mutual cooperation between the crushing function and the anti-wrapping function.Finally,a static analysis of the key components is carried out,and the analysis shows that the material strength requirements are met.The prototype passed the field test and adopted the orthogonal test of three factors and three levels to determine the optimal combination of factors: when the forward speed of the crushing machine is 1.85m/s,the crushing knife roll is 1500r/min and the bending angle of the Y-shaped blade is 140° The corresponding banana straw qualification rate is 96.5%,and the straw coverage rate is 55.6%.In addition,the crushing results are analyzed,and the winding situation of the crushing knife roller is also explained and analyzed.Finally,compared with the previous generation of machines,the crushing effect of the machine designed in this paper is good,and the winding phenomenon is present but not prominent,so the crushing knife roller The entanglement problem is still a key research object,and the structure of the anti-entanglement device needs to be further improved in subsequent research.