液压与气动2026，Vol.50Issue(2)：11-19,9.DOI:10.11832/j.issn.1000-4858.2026.02.002
非圆行星齿轮液压马达冲击及磨损机理研究
Investigation on Impact and Wear Mechanism of Non-circular Planetary Gear Hydraulic Motors
摘要
Abstract
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.关键词
非圆行星齿轮液压马达/流场仿真/振动分析/磨损分析Key words
non-circular planetary gear hydraulic motor/flow field simulation/vibration analysis/wear analysis分类
机械制造引用本文复制引用
周如林,赵志伟,刘昊,苗雪中,张鑫宇,袁晓明..非圆行星齿轮液压马达冲击及磨损机理研究[J].液压与气动,2026,50(2):11-19,9.基金项目
国家自然科学基金(52175066) （52175066）
天地科技股份有限公司科技创新创业资金专项(2022TM010-J1,2025-TM-014-C1,2025-TM-013-J1) （2022TM010-J1,2025-TM-014-C1,2025-TM-013-J1）
