Based The Given Position Of Pot Seedling Transplanting Mechanism Dimension Synthesis And Design

Transplanting is one of the main planting methods of rice in our country,Including blanket-like seeding transplanting and pot seedlings transplanting.blanket-like seeding transplanting is to cultivate a good blanket seedlings transplanting mechanism by cutting seedlings taken transplanting planting,Blanket-like seedling transplanting easily hurt rice.pot seedlings transplanting is transplanting agencies through the folder seedlings,plucking seedlings and other activities will be removed from the tray,and then planted.As the planting process does not hurt the root,transplanting seedlings without relief seedling is conducive to low-tillering of rice,to extend the rice growing season,to achieve rice yield.Aiming at the problem that the distance between the lowest point of the gearbox and the lowest point of trajectory in the transplanting mechanism of the planetary gear train of the Bessel gear planetary gearbox is too small and the gearbox easily interferes with the ground.Citing a new design method of rice seedling transplanting mechanism.Given the coordinates of the trajectory of the three locations(Pick up the starting point,Pick up the end of the point,Push seedling point)and gestures(The position coordinates of the seedling raising point is to ensure the position of the transplanting trajectory is relatively low,the starting point of pick-up and pick-up point is to ensure the pick-up length is large enough),Exploring the relationship between circle center and circle point,Optimizing the parameters of the organization and Obtaining an ideal rice seedling transplanting mechanism.The main contents of this paper are the following aspects:1)Analysis of the working principle of rice pot seedling transplanting at home and abroad,a design method of two-stage non-circular gear rice seedling transplanting mechanism was put forward.The "guide mechanism design" was introduced into the design of rice seedling transplanting mechanism.2)According to the characteristics of rice seedlings transplanting mechanism.The coordinates and attitude of the three locations of the transplanting track of a given institution.Find the relationship between the center point and the circle point of the two-bar mechanism.And based on seedling transplanting seedlings in each center point corresponding to the angular displacement curve,Find the ideal center point and the coordinates of the dot.3)In the given position of the three coordinates of the point to add some type of trajectorypoint.And establish the relationship with the institutional parameters.Using the human-computer interaction optimization software developed by GUI platform in Matlab,Find a set of structural parameters that meet the requirements of transplanting agencies: The first non-circular gear center distance La=42mm,the second non-circular gear center distance Lb=42mm,transplanter arm size S=147mm,initial installation angle ?=32°,transposing arm corner ?=-30°,planetary wheel offset angle ?=0°.4)Completed the transplanting structure design,And use UG to complete the establishment of three-dimensional model and virtual prototype kinematics simulation test.The displacement and velocity curves of the transplanter end of the mechanism are basically consistent with the theory.5)Physical prototype of pot seeding mechanism was manufactured.Using the built test bench to complete the transplanting mechanism idling test.the trajectory and the parameter values of goals were analysed by using digital camera and Blaster's MAS software.Experimental data and theoretical data are basically consistent.which verifying the calculation.