摘要
针对动力稳定装置液压油缸的工作压强及液压油缸进出口液阻系数对作业效果的影响问题,对动力稳定装置的轮轨接触特性以及钢轨的受力特征等进行了分析,提出了一种基于键合图理论、Hertz非线性接触理论以及Euler梁理论建立的动力稳定装置-轨道横向耦合系统的键合图模型。进行了动力稳定装置的现场实验,并提取了动力稳定装置的横向加速度与轨枕的横向加速度,与仿真结果进行了对比分析,验证了模型的正确性;分析了夹钳油缸的工作压强以及液压油缸进出油口的液阻参数对轮轨间能量传递效率与作业效果的影响。研究结果表明:增大液压油缸工作压强能稳固轮轨关系,同时会激增轮轨间能量传递效率;液压油缸进出口液阻系数也与作业效果正相关。
Aiming at issues of the working pressure of hydraulic cylinder and the coefficients at inlet and outlet of clamping hydraulic cylinder effect the working results,the roller rail characteristics and contact characteristics of the rail were studied.A dynamic stabilization unit bond graph model based on the bond graph theory,Hertz nonlinear contact theory and Euler beam theory,which includes a hydraulic and a mechanical system,was proposed.The lateral accelerations of the dynamic stabilization unit and sleeper were compared with the experimental results to verify the accuracy of the model.The impacts of the working pressure and hydraulic resistance parameters of the hydraulic cylinder on working results were summarized.The results indicate that increasing the working pressure of the hydraulic cylinder can stabilize the roller rail relationship and surge the energy transfer efficiency of the rollers and rails.The hydraulic resistance coefficients of the hydraulic cylinder inlet and outlet are also positively related to the working effect.
作者
李佳奇
王立华
严波
LI Jia-qi;WANG Li-hua;YAN Bo(Faculty of Mechanical Engineering,Kunming University of Science and Technology,Kunming 650500,China;Faculty of Art And Communication,Kunming University of Science and Technology,Kunming 650500,China)
出处
《机电工程》
CAS
北大核心
2020年第12期1479-1484,共6页
Journal of Mechanical & Electrical Engineering
基金
国家自然科学基金资助项目(51765023)。
关键词
动力稳定装置
键合图理论
液压油缸
轮轨接触
间隙传动
dynamic stabilization unit
bond graph theory
hydraulic cylinder
roller rail contact
gap drive
