摘要
以滑移装载机为研究对象,针对在行驶过程中受到不平路面激励时,工作装置对车架的冲击而引起的整机剧烈振动问题,采用液压缓冲回路和传感检测技术对行驶减振系统进行了设计.运用机械振动原理建立了整机的三自由度动力学模型,结合动力学原理建立了整个系统的数学模型,运用数字仿真方法并利用MATLAB/Simulink对系统进行动态仿真.仿真结果表明:行驶减振系统能使整机的振动幅值降低55%,振动加速度降低59%,并在较短的时间内达到稳态;合理地选取减振系统的刚度和阻尼参数值能加快衰减振动的振幅和加速度,提高了滑移装载机的行驶平顺性和工作效率.
Based on the skid-steer loader,this paper focuses on the severe vibration problem caused by the impact of the working device on frame when suffered by unflat road surface in motion,and the damping vibration system was designed by hydraulic buffer circuit and sensor detection technology.Three-dimensional dynamic model of whole system was established by mechanical vibration principle and mathematical models of whole system was established by dynamic principle,and the system was simulated by Simulink toolbox.The results of simulations prove that the damping vibration system can reduce the amplitude by 55% and the acceleration by 59%,and ean make the vibration attenuation reach steady state in shorter time,and stiffness and damping of the damping vibration system reasonably selected can speed up amplitude and acceleration of vibration attenuation,and it also improved traveling comfort and efficiency of the skid-steer loader.
出处
《郑州大学学报（工学版）》
CAS
北大核心
2011年第1期80-84,共5页
Journal of Zhengzhou University（Engineering Science）
关键词
滑移装载机
行驶减振系统
动力学模型
动态仿真
skid-steer loader
travelling damping vibration system
dynamics model
dynamic simulation
