查看文章

In the paper some results concerning the exact kinematics analysis of the mechanism of some sucker rod pumping units are presented. The analysis is realized using the method of the projection of the independent contours. The positional and cinematic parameters are determined in an analytical form depending on the angle of the driving cranks, using the powerful functions for symbolical calculus integrated in Maple program. Special attention was given to the variation of the acceleration of the end of the polished rod. Finally, some interesting simulation results in the case of the Lufkin pumping units: C-1280D-427-192, RM-1280D-427-192, M-1280D-427-192 and A-1280D-427-192 are presented.