阀控缸型式液压电梯的振动模态分析  

Vibration Mode Analysis of Valve Controlled Cylinder Type Hydraulic Elevator

作　　者：刘忠[1,2] 高站伟 霍沅明 李天明[1] 

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]苏州大学机电工程学院,江苏苏州215021

出　　处：《机床与液压》2017年第1期125-128,共4页Machine Tool & Hydraulics

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

摘　　要：所设计的液压电梯采用直顶方式,以阀控缸型式液压电梯作为研究对象,构建了其物理模型,建立了基于柱塞缸与轿厢架(m_1)、轿厢与电梯载重(m_2)二自由度的阀控式液压电梯系统动力学方程。在此基础上,讨论了该液压电梯系统的振动固有频率的计算方法。通过仿真实验,着重分析了其油液刚度、轿底橡胶减震垫刚度以及轿厢载重大小的变化对系统固有频率的影响。结果表明:其他条件不变情况下,液压电梯系统的一、二阶固有频率随油液刚度的减小而减小;液压电梯系统的一、二阶固有频率随轿底橡胶减震垫刚度的增大而增大;液压电梯系统的一、二阶固有频率随轿厢载重的增大而减小。The design of valve controlled cylinder type hydraulic elevator adopts the style of pushing up straightly. Regarding the valve controlled cylinder type hydraulic elevator as the research object, its physical model and the dynamic equation of the valve controlled hydraulic elevator system were established based on the piston cylinder and the car frame （m1）, the car and the lift truck （m2） two degrees of freedom. On the basis, the calculation method of the natural frequency of the vibration of the hydraulic elevator system was discussed. Through the simulation experiment, the influence of the oil liquid rigidity, the rigidity of axle rubber damping pad and the change of the cars cabin of load size on the natural frequency of the system was emphatically analyzed. The results show in other conditions unchanged, first or second order natural frequency of the hydraulic elevator system decreases with the decreasing of the oil rigidity. First or second order natural frequency of the hydraulic elevator system increases with the increasing of the rigidity of rubber damping pad under the car axle. First or second order natural frequency of the hydraulic elevator system decreases with the increasing of the cars cabin of load size.

关 键 词：阀控缸 液压电梯 振动 固有频率 

分 类 号：TU857[建筑科学]