Research On Dynamic Property Of Driveline For Nine-axle All-terrain Crane

Due to the outstanding driveline of chassis, all-terrain crane can run under the complicated lane conditions with better dynamic property and trafficability. With the development of all-terrain crane toward to large scale, heavyweight and multiple-spindle, the performance of driveline is the key factor to development, which indicates it is necessary to study dynamic property of the driveline.In this essay, flexible frame dynamic simulation and rigidity frame calculation are modeled, through applying the theory on flexible system dynamics and union simulation with ANSYS and ADAMS, the simulation result of flexible frame axle load compare to rigidity frame axle load is analyzed, and the result shows that axle load from flexible frame dynamic simulation is in conformity with the practical distribution status of axle load, indicating the distribution is more reasonable and the accuracy of the following dynamics and cycle power analysis.According to chassis technical parameters of X 9-axle all-terrain crane, its driveline dynamics is modeled, contrastive analysis on dynamic property under time-division-driven is made in the model based on transfer case time division principal. Through simulation analysis on 2 impact factors of dynamic property, which are transmission position and torque distribution ratio respectively, the evidence indicate that when the transmission position is lower, except highest speed, the accelerated speed, gradeability, dynamic factor and power reserve are higher, and when the torque distribution ratio in transfer case is 1.22, the climbing performance is optimal.Based on analysis on power attenuation of driveline, in this essay, the reason why the cycle power generate has founded and the calculation method on multi-axle vehicle cycle power is constructed. Through simulation analysis on 4 impact factors of dynamic property, including torque distribution ratio, coefficient of road adhesion, gearbox output torque, transfer case arrangement. The evidence shows that when setting level 3 transfer in driveline and the torque distribution ratio is 1.22, gearbox output torque is the lowest, utilization rate of coefficient of road adhesion is the highest, and the cycle power is the lowest.