Development of the methods of kinematic analysis of elliptic drum of vertical-spindle cotton harvester
Annotatsiya
The paper is devoted to the development of a graphic-analytical method for studying the lever mechanism of an elliptical drum of a cotton harvester, which favorably differs from a serial drum in the completeness of cotton picking from bushes and the quality of the harvested raw cotton. The aim of the study is to define the degree of the effect of the structure and geometry of individual links of the elliptical drum mechanism on changes in kinematic parameters of the characteristic points of the mechanism links, in particular, of the spindles centers. The kinematics of the mechanism was investigated using classical methods of theoretical mechanics, the theory of mechanisms and mechanics of machines, combined with modern methods of computer graphics. The developed research method was described, its usefulness and advantages were shown. As an example, computational and graphic procedures were performed to determine the linear and angular velocities and accelerations of the characteristic points of the mechanism of an elliptical drum in its specific position. The method is clear, easy to control the results, allows one to quickly solve applied design problems, and develops an engineering intuition to evaluate the capabilities of the mechanism according to its kinematic scheme. The research results are of interest for a wide practical application of elliptical spindle drums in the construction of vertical-spindle cotton harvesters.