液压与气动2025，Vol.49Issue(9)：39-49,11.DOI:10.11832/j.issn.1000-4858.2025.09.005
静力平衡式高压径向柱塞马达工作特性仿真研究
Simulation Study on the Operating Characteristics of a Hydrostatic-balanced High-pressure Radial Piston Motor
摘要
Abstract
A new configuration of plate pilot pressure control for two-stage flow distribution hydrostatic-balanced high-pressure radial piston motor is proposed to address the problems of the large lateral forces on the piston pair lead to large transmission shocks at start/stop moments,serious leakage of the flow distribution and piston gap and low volumetric efficiency of traditional radial piston motors under high-pressure working conditions.This new model adopts composite pistons assemblies and pilot pressure control two-stage flow distribution method to achieve high-pressure power oil circuit sealing and high-efficiency flow distribution.In addition,the hydraulic floating support structure is adopted for the pilot stage flow distributor to compensate for mechanical wear and improve the reliability of long-time continuous operation.Based on AMESim,the dynamic simulation model of the whole motor is established.The thesis analyzes the correspondence between motion of single piston and its distribution valve,the influence of diameter of damping hole of distribution valve,the working pressure and main stage supply flow rate on the volumetric efficiency of the motor,and also analyzes the output characteristics of the motor with different transmission structures.The simulation results show that the motor has a volumetric efficiency of 89.74％at high pressure of 35 MPa.The pulsation rate of the output speed is reduced by 60％compared with that of the crankshaft linkage motor.It also has good low-speed stability and wide load adaptability.The results show a theoretical basis for the design and optimization of the high-pressure hydrostatic balance radial piston motor prototype is provided.关键词
径向柱塞马达/先导压力控制/二级配流/静力平衡/AMESim动态仿真Key words
radial piston motor/pilot pressure control/two-stage flow distribution/hydrostatic balance/AMESim dynamic simulation分类
机械制造引用本文复制引用
李昕铭,郭桐,阙富民,刘昊,黄小敏,林添良..静力平衡式高压径向柱塞马达工作特性仿真研究[J].液压与气动,2025,49(9):39-49,11.基金项目
国家自然科学基金(52305057) （52305057）
中央高校基本科研业务费专项资金(ZQN-1104) （ZQN-1104）
