Research And Design On Soil Disk Corn Stubble Cutting Characteristics Testing Device

No-tillage seeder is one of the key tools of conservation tillage, sowing much of quality of affecting the development of conservation tillage. Has been to promote the no-tillage planter has many problems, such as heavy equipment quality and job destruction Ridge, stubble cutting and Ridge cleaning effect is not significant. In order to optimize key components of no-till planter, developed a maize stubble stubble cutting disc motion testing devices, real-time through the device can accurately mapping the stubble disc cutter operation trajectory of the points to be measured, provide reference for optimal design of disc cutting knife.Paper’s main achievements are as follows:(1) Using AutoCAD and SolidWorks software on disc motion characteristics of corn stubble stubble cutting apparatus design, computer modeling and design of test device and build the machine Assembly. Based on the finite element analysis of key components, analysis results show that the title design of the disc motion characteristics of corn stubble stubble cutting apparatus material characteristics and mechanical properties meet the design requirements.(2) Through on disc broken stubble knife cutting corn root stubble movement characteristics test device of single factors test known:smooth disc broken stubble knife Shang stay measuring points of movement track for smooth of Cycloid, semicircular type gap disc and Archimedes spiral disc Shang stay measuring points of movement track for by different length of arc composition of cloud curve, each cycle of arc number by broken stubble disc Shang of gap number decided. Weight ensures that the effect of stubble, the stubble has a large impact; and affecting the trajectory of the vertical position, the depth of cutting crop.(3) Through the corn stubble stubble cutting disc on motion characteristics test of secondary three level orthogonal factors very poor value calculated, determining factors in order to find out what combination of factor levels and using Archimedes spiral disc cutting knives, weight 100kg stubble best, highest rate of stubble.(4) Based on kinematic analysis of three disc cutting knives, respectively, impact, into the sliding cutting angles and cutting speed changes are compared. Establish Archimedes spiral disc of stubble cutting roots movement kinematics model obtained the Archimedean spiral disc cutting blade points on the trajectory is different from the length of the curve consisting of arcs, Archimedes spiral disc-crop is established on the blade point equation of motion. Found the Archimedean spiral disc stubble locus of points on the blade with smooth Cycloid disc stubble cutting knife, with a semi-circular notch impact of disc cutting knife and sliding cutting angles, sliding cutting performance is better.