摘要
矿用自卸车装载时会产生巨大冲击,严重时会造成车身或悬架破坏。为了提高车辆寿命,改善悬架减振吸能特性,以陕西同力重工最新研发的TLD110矿用自卸车为研究对象,重点研究车辆装载过程中油气悬架的减振吸能特性,通过实验对比无冲击加载和有冲击加载两个过程中油气悬架压力的变化情况。结果表明:无冲击加载时油气悬架压力和装载质量成线性关系,实验值和理论值基本一致,最大误差为5.2%;有冲击加载会造成油气悬架压力迅速达到峰值,然后衰减振荡,最后趋于稳定值,最大偏差为0.32 Mpa,最大超调量为21.6%,衰减振荡时间集中在4.7 s^6.0 s之间;增大蓄能器直径能减小装载冲击油气悬架压力的最大偏差,对车身和悬架起到更好保护作用。
Mining dump trucks bear a huge impact when being loaded.This impact will cause damage to the body or suspension of the trucks.In order to raise the lifespan of the vehicle and improve the vibration absorption feature of the suspension,the TLD110 mining dump truck developed by Shaanxi Tonly Heavy Industries Co.Ltd.is taken as the research object.The research is highlighted on the vibration and energy absorption characteristics of the hydro-pneumatic suspension during loading.Through experiments,the changes of the pressure of the hydro-pneumatic suspension with the shock loading and without the shock loading are compared.The results show that there is a linear relationship between the spring pressure and the loading mass when there is no impact loading.The experimental and theoretical values are basically consistent each other with the maximum difference of 5.2%.The shock loading causes the hydro-pneumatic suspension pressure to reach the peak rapidly and then the pressure oscillation reduces.And then it tends to a stable value.The maximum deviation is 0.32 MPa.The maximum overshoot is 21.6%.The oscillation attenuation time is concentrated in 4.7 s-6.0 s.Increasing the diameter of the accumulator can reduce the maximum deviation of the loading impingement hydro-pneumatic suspension pressure,which can well protect the body and the suspension.
作者
索雪峰
焦生杰
王刚锋
SUO Xuefeng;JIAO Shengjie;WANG Gangfeng(Key Laboratory of Road Construction Technology and Equipment of MOE,Chang’an University,Xi’an 710064,China)
出处
《噪声与振动控制》
CSCD
2020年第4期173-176,240,共5页
Noise and Vibration Control
基金
中央高校基本科研业务费专项基金资助项目(300102258110)。
关键词
振动与波
矿用自缷车
油气悬架
振动冲击
超调量
振荡时间
vibration and wave
mine dump truck
hydro-pneumatic suspension
vibration shock
overshoot amount
oscillation time
