摘要
为有效减缓大负载液压缸制动阶段产生的冲击影响,并且有效减少能量损耗,采用液压蓄能器构建重力势能回收系统,通过AMESim仿真平台对动态制动过程和能量回收率进行分析。研究结果表明:在前0.5 s大负载液压缸处于匀速运动,后续系统进入制动并开始回收能量;从1.4 s开始,系统出现泄漏,蓄能器无法继续回收能量,需要利用切断阀将制动回路切断;在切断阀最初产生制动效果时,回油路流量已处于很低的状态,因此缓冲腔并不会受到较大冲击;不同的蓄能器体积并不会引起系统制动状态的变化,可达到基本相同的能量回收率。提高蓄能器初始压力后,在更短时间内可完成制动过程,并且回收的能量基本不变。
In order to effectively mitigate the impact of hydraulic cylinder braking and effectively reduce the energy loss,a hydraulic accumulator was used to build a gravitational potential energy recovery system.The dynamic braking process and energy recovery were analyzed by using AMESim simulation platform.The results show that:in the first 0.5 s,hydraulic cylinder is in uniform motion,subsequently the system enters the braking process and begins to recover energy;starting from 1.4 s,the system is leaking,and the accumulator cannot continue to recover energy,so the brake circuit needs to be cut off by the cut-off valve;when the cutting valve initially produces the braking effect,the return oil flow is already in a very low state,so the buffer chamber will not be greatly impacted;under different accumulator volumes,the braking state of the system does not change,and the energy recovery is basically the same;after increasing the initial pressure of the accumulator,the braking process can be completed in less time and the energy recovered is lower.
作者
陈轶辉
李洪星
赵树忠
张雨新
CHEN Yihui;LI Hongxing;ZHAO Shuzhong;ZHANG Yuxin(Department of Automation Engineering, Tangshan Institute of Industrial Technology, Tangshan Hebei 063299,China;Tangshan Yate Special Purpose Vehicle Co., Ltd., Tangshan Hebei 063000,China;College of Mechanical Engineering, North China University of Science and Technology, Tangshan Hebei 063299,China)
出处
《机床与液压》
北大核心
2021年第1期165-168,共4页
Machine Tool & Hydraulics
基金
河北省工业和信息化厅新产品新技术项目(20170129)
河北省科技计划项目(201616210342)。
关键词
大负载液压缸
制动系统
能量回收
仿真分析
Hydraulic cylinder with large load
Brake system
Energy recovery
Simulation analysis
