Analysis Of Low Consumption And High Efficiency Harvest Threshing Technique For Rapeseed

Rapeseed is one of the main oil crops in China,and its planting area is the most widely used in all oilseed crops.In view of the requirements for the design of rapeseed threshing device in China,through consulting relevant literature,the research status at home and abroad and the main threshing devices in China are introduced.Starting from the mechanical properties of rape,the shear stress and shear strain were measured.The working condition of the threshing device is simulated and the force situation of the device is analyzed.The vibration frequency of the threshing roller is obtained through the ANSYS analysis software,and the related data of the stress and strain of the threshing roller are obtained.From the theoretical analysis,some data of the vibration phenomenon of the threshing roller are obtained,which provides some reference data for avoiding the vibration phenomenon of the threshing device in the actual design.This paper mainly studies the following points:1: in the previous experiment,the main experiment was to carry out the shear angle cracking experiment on the Brassica napus.From the physiological analysis of the rape Kangle,the cause of the angle fissure and the effect of the angle crack were analyzed.The maximum shear stress of the oil leaven 6 was 0.4785 MPa,the smallest shear stress was 0.3784 MPa,and the average cutting was cut.The stress is 0.4253 MPa and the average shear strain is 0.00445.2: in the case of large loss of harvester,high power consumption and high power consumption after threshing,a threshing device is designed to combine the screen and the threshing roller.At the same time,the preliminary screening work is carried out at the same time of threshing,and the related roller structure is designed according to the related data.3.the dynamics of the threshing spindle is analyzed.The maximum shear stress and twist angle at the three speeds of 450r/min,650r/min and 850r/min are obtained,respectively: 7.36 MPa,4.82 MPa,5.22MPa;0.0097。.0.069。.0.0523。.The relationship between the vibration of the threshing spindle and the length of the threshing spindle,the cross section area of the threshing spindle,the density of the spindle,the modulus of elasticity and the constraint of the spindle are also analyzed.4: through the ANSYS analysis software,the threshing cylinder was analyzed by finite element method.The maximum shear stress and deformation of working at three speeds of 450r/min,650r/min,850r/min are 48.518 MPa,100.77 MPa,172 MPa,0.08 mm,0.167 mm,0.28mm...