非圆行星齿轮液压马达冲击及磨损机理研究OA

The non-circular planetary gear hydraulic motor has great application potential due to its compact structure and high torque output,but it suffers from severe gear impact,serious wear of the valve plate,and low volumetric efficiency.Based on computational fluid dynamics and dynamic analysis,a three-dimensional flow field model of the motor is established.Through numerical simulation and experimental testing,the impact characteristics,valve plate wear mechanism,and structural optimization are systematically investigated.The results show that appropriately enlarging and reshaping the port geometry can effectively reduce the impact peak of the gears and extend the stable operation period by about 55%.Increasing the through-hole diameter of the planetary gear significantly decreases the local axial force and impulse,reducing end-face wear by up to 66.7%.Prototype tests verifies the accuracy of the simulation results,confirming that the proposed optimization scheme improves valve plate wear resistance and motor volumetric efficiency.This study provides theoretical support and experimental evidence for the structural optimization and engineering application of non-circular planetary gear hydraulic motors.