Design And Analysis Of Transmission Structure Of Non-Coaxial Pulse Stepless Transmission With Dual Output Based On Self-adjusting

The mechanical pulsating stepless variable transmission has many features in many aspects such as large range of speed, many choices on speed adjustment, high design flexibility, high loading capacity and stable performance. And it has a wide range of applications in industry and processing line. Nowadays, most pulsating stepless variable transmissions are in medium-low speed and small-medium power, but with a certain range of speed fluctuation. So we adopt the above-triple-phrase transmission mechanisms in good combination to reduce ripple quantity of output speed. When we combine the multiphase transmission mechanisms, it will be much commplex in many ways. Not only it will lead to a much more complex structure on transmission, but it introduces so many repeat constraint to make transmission mechanisms sensitive to errors. From the above,developing a new pulsating stepless variable transmission with high-power, low ripple,compact structure and non- repeating restriction is an important direction in the future.This thesis is focused on the new requirements above to analyze dimension synthesis of main transmission mechanism and do a structured design based on dynamical analyses and the former synthesis performance on non-coaxial six-bar function mechanism with double output. And the sample machine is in trial-production. The main contents are as follows:(1) This thesis analyzes its structure characteristic and operation principle on the six-bar linkage with double output. And the Simulink simulation model of four-phrase and four-bar linkages with signal output is developed to analyze change rules of angular velocity from rocker's output. The kinematics simulation of two-phrase and six-bar linkage with double output is implemented and it shows that rules of changes towards angular speed curve of rocker DG's positive travel and rocker EF's negative travel are quite different. As a rest, it leads to increase the output speed's ripple quantity. Parameterized model of two-phrase and six-bar linkage is developed in software ADAMS so that it can optimize design variable based on lowing ripple quantity. Further, it can help get optimum matching sizes of every linkage and improve output speed stability.(2) This thesis analyzes overconstraints of six-bar linkage and helps and get configuration of motion pair and design the automatic adjusting function based on zero over-constraint bar coupler-groups method. The calculation and self-adjusting mechanism model of kinematic pair B is developed to get its self-adjusting mechanism change rules and then do simulation analysis with the help of axis based error of kinematic pair. The results show that errors mostly make no difference on self-adjusting mechanism output capability.(3) Inclined rod type crank governor for non-coaxial impulse stepless transmission with double output is designed and it is analyzed on kinematics simulation at load and kinestate by software ADAMS.(4) This thesis makes the static analysis and modal analysis on box and transmission shaft by ANSYS Workbench. The optimal topology design of linkage structure with appended structures was performed and the strength analysis of linkage was carried out.Non-coaxial impulse stepless transmission with double output in this thesis has many features in many aspects such as compact structure and gearshift stable performance. After design of self-adjusting mechanism, the mechanism has good adaptability to errors, low demand for accuracy of manufacture and it has good economic and social benefits.