氮爆式液压打桩机蓄能控制仿真研究  

Simulation of Accumulator Control System of Nitrogen Explosion Hydraulic Piling Hammer

作　　者：张氢[1] 陈淼 孙远韬[1] ZHANG Qing;CHEN Miao;SUN Yuan-tao(School of Mechanical Engineering,Tongji University,Shanghai 201804,China)

机构地区：[1]同济大学机械与能源工程学院,上海201804

出　　处：《计算机仿真》2018年第7期183-187,193,共6页Computer Simulation

基　　金：上海市科委科技创新行动计划(17DZ1204602)

摘　　要：以某型海上液压打桩机为研究对象,针对桩锤被提升时,由于桩锤惯性大且系统采用的单杆液压缸造成流人油缸下腔的流量不足,导致桩锤上升速度慢、工作效率低的问题,提出差动式液压打桩机驱动系统的改进方案,采用差动式流量再生回路加快桩锤上升速度,提高系统工作效率。首先通过分析液压系统的基本原理分别建立了改进前后液压系统的数学模型,然后在Matlab/Simulink环境下进行求解分析,得到桩锤的位移、速度曲线,最后利用AMESim仿真平台建立液压系统模型进行仿真,进一步验证求解结果。结果显示:在保证桩锤相同的打击能和行程条件下,差动式氮爆打桩机桩锤上升时间较短,打桩频率明显提高,得出差动式液压驱动系统优于目前驱动系统的结论。With the larger inertia of hammer and insufficient flow of single rod hydraulic cylinder, hammer body is raised slowly and the working efficiency is reduced. Based on an offshore hydraulic piling hammer, and aiming at this problem, we proposed a new hydraulic driving system design scheme which can accelerate hammer＇s rising velocity with differential circuit to shorten the driving cycle. According to the analysis of the existing hydraulic driving system, two hydraulic systems＂ mathematical models which were solved with MATLAB/Simulink were established in this pa- per. To validate the displacement and velocity results, the simulation models were solved with AMESim. The simula- tion results show that the consumption of rising time of differential nitrogen explosion piling hammer is shorter, the driving frequency is higher than the existing machine, the piling machine work efficiency is improved under the same energy and travel conditions, and the hydraulic piling machine driving system is optimized.

关 键 词：差动回路 数学模型 液压系统仿真 双杆液压缸 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]