无阀控液压冲击系统改进设计方案及仿真分析  

Improved Design Scheme and Simulation Analysis of Non-valve Controlled Hydraulic Impact System

作　　者：刘忠[1,2] 邹宇[2] 张凯[2] 赵飞[3] 刘军军[3] 

机构地区：[1]桂林航天工业学院机械工程学院,广西桂林541004 [2]中国矿业大学机电工程学院,江苏徐州221116 [3]常熟理工学院机械工程学院,江苏苏州215500

出　　处：《系统仿真学报》2017年第7期1472-1480,共9页Journal of System Simulation

基　　金：国家自然科学基金(51275060);苏州市科技计划(SYG201325)

摘　　要：针对阀控式液压冲击系统的换向过程的能量损失缺陷,提出了一种无阀控液压冲击系统结构原理,建立了其动力学方程,利用AMESim软件进行了仿真分析。根据仿真结果与设计目标的误差,提出采用增加节流装置和控制进、出油路两种方案。仿真结果表明,采用增加节流装置时且节流孔径为6.5 mm时,其工作效率由11.8%提高到18.3%;采用控制进、出油路方案,其工作效率由11.8%提高到26.4%,冲击系统改善效果明显,达到了预期设计目标,该研究为液压冲击系统的设计和理论研究提供了技术参考。Due to valve port commutation of traditional hydraulic impact system caused valve leakage. For the above shortcomings, an improved structure principle of the new type of non-valve controlled hydraulic impact system was proposed establishing dynamic equations of impact system andconducting simulation analysis based on AMESim. Due to the simulation results which was inconsistent with design goal, two improvement schemes were proposed adding throttle device and controlling inlet and outlet circuit. The simulation results suggest that the working performance of impact system has been improved by adding throttle device, and its efficiency has been increased from 11.8% to 18.3% when the diameter of orifice is 6.5mm; its efficiency has been increased from 11.8% to 26.4% by controlling inlet and outlet circuit, the improving effect is very significant, and it achieves the expected design goals. The study of the improved design scheme of non-valve controlled hydraulic impact system provides technical reference for the design and theoretical research of hydraulic impact system.

关 键 词：无阀控液压冲击系统 改进设计 节流装置 双油路 仿真 

分 类 号：TP39[自动化与计算机技术—计算机应用技术] TP391.9[自动化与计算机技术—计算机科学与技术]