Research Of Carrying Capacity And Simulation Of Zero-Max CVT

Impulse continuously variable transmission (CVT) has become one of the main directions of modern transmission technology. It can transmit reliably and regulate while resting and moving. Its life is long, shift range is large and shift capability is stable. Zero-Max CVT has better capability, but it still has some problem restricting its increase of bearing capacity. The researches of this paper are as follows:1. Transmission error of movement component is analyzed based on the analysis of transmission characteristic of Zero-Max CVT. Error expressions of output angle are deduced. It offers a theory basis of manufacture tolerance and builds the foundation for future efficiency calculation.2. The pair inevitably has clearance because of assembly manufacture error and wearing. The impact of clearance can't be ignored when analyzing high speed machine. Relative movement between pair elements of clearance pair and mutual impact between several clearance pairs are researched. Movement equation of crank and rocker mechanism with clearance is deduced.3. Kinematics and dynamics simulation of Zero-Max CVT is carried out by using ADAMS. Curve of velocity, acceleration, power consumption, element force of rotation pair, friction etc. can be carried out. Excellent working performance can be obtained according to analyzing and comparing several parameter projects. It builds a foundation of practice manufacture.4. Vibration analysis of Zero-Max CVT system is carried out by using ANASYS. Natural frequency and vibration model of the system are obtained. It builds a foundation of future response analysis of dynamical characteristic. The most dangerous parts of CVT components can be found. Invalidation and fracture of CVT often occur near these parts.5. The impact factors of machine fatigue strength are analyzed and the methods of increase fatigue resistance character are advanced. Overrunning clutch witch is the important element of Zero-Max CVT is analyzed. Impact factors of restricting increase of bearing capacity of overrunning clutch are analyzed. Reasons of invalidation are analyzed and measures of increase life are advanced.