液压静力压桩机起吊系统动态特性的研究  

Study on the Dynamic Characteristics of the Hoisting System of Hydraulic Static Pile Pressing-in Driver

作　　者：胡均平[1] 张灵[1] 史天亮[1] 

机构地区：[1]中南大学机电工程学院,湖南长沙410083

出　　处：《郑州大学学报（工学版）》2008年第4期137-140,共4页Journal of Zhengzhou University（Engineering Science）

基　　金：湖南省科技攻关计划资助项目(04GK3041)

摘　　要：通过对液压静力压桩机起吊系统的分析和研究,运用AMESim软件建立了液压驱动系统的仿真模型,并建立了钢丝绳的力学方程,分析了激励加速度对钢丝绳动张力的影响.对吊臂在不同动载系数时,起吊系统的最大起重力及变幅油缸的最大油压与变幅角度的关系进行了仿真研究.通过仿真分析可知激励加速度的变化会引起动张力的变化,运用修正后的动载系数代替经验取值对模型进行力学分析,不但简化了运算过程也使结果更加准确.This paper makes the analysis of and research into the hoisting system of hydraulic static pile pressing-in driver, sets up the simulation model of the hydraulic driving system in AMESim, establishes the mechanics equation of steel rope and analyses the influence of actuator acceleration on dynamic tension. Simulation of and research into the relationship between maximal hoisting force and angle of the crane, and the relationship between the maximal cylinder pressure and angle of the crane arm with different dynamic load coefficient are made. The analysis shows that the change of acceleration makes the change of dynamic tension. Using the amendatory dynamic load coefficient to substitute the experiential one and doing the dynamical analysis can predigest the calculating and make the result more accurate.

关 键 词：静力压桩机 起吊系统 动张力 动栽系数 建模 仿真 

分 类 号：TH211[机械工程—机械制造及自动化]