重卡驾驶室液压翻转机构翻转缸悬置状态仿真分析  

Simulation Analysis on Suspension Situation of Overturning Cylinder of Heavy Truck Cab’s Hydraulic Turnover Mechanism

作　　者：张家昌 肖志权 陈玲莉 张明明 庹明伟 ZHANG Jia-chang;XIAO Zhi-quan;CHEN Ling-li;ZHANG Ming-ming;TUO Ming-wei(School of Mechanical Engineering and Automation,Wuhan Textile University,Wuhan 430200,China;Dongfeng Commercial Vehicle lechnology Center,Shiyan 442008,China;Dongfeng(Shiyan)Automobile Hydraulic Power Co.,Ltd,Shiyan 442000,China)

机构地区：[1]武汉纺织大学机械工程与自动化学院,武汉430200 [2]东风商用车技术中心,十堰442008 [3]东风(十堰)汽车液压动力有限公司,十堰442000

出　　处：《汽车科技》2021年第1期25-30,共6页Auto Sci-Tech

摘　　要：针对某重卡驾驶室液压翻转机构出现的泄漏等问题,对其翻转缸在悬置状态进行了基于AMESim的建模与仿真。考虑翻转缸缩回至活塞处于缸筒扩孔区,且活塞杆随驾驶室一起做微幅振动的状态,分析了振动频率、幅值、等效缝隙值对于翻转缸两腔压力的影响,及振动过程中两腔的流量变化。分析结果显示,悬置状态翻转缸会产生缸内负压,造成气穴乃至气蚀现象,其程度主要与翻转缸的振动频率、幅值和等效缝隙值有关,甚至是翻转缸泄漏的原因之一。Aiming at the leakage of a heavy truck cab hydraulic overturning mechanism,a model and simulation based on AMESim is carried out on the overturning cylinder in the suspended state.Considering that the cylinder retracts to the piston in the cylinder reaming area and the piston rod vibrates slightly with the cab,the influences of vibration frequency,amplitude and equivalent gap value on the pressure and flow of the two Chambers of the cylinder are analyzed.The analysis results show that the overturning cylinder in the suspension state generates negative pressure in both chambers of the cylinder,resulting in cavitation or even cavitation erosion under impact pressure,the degree of which is mainly related to the vibration frequency,amplitude and equivalent gap value of the overturning cylinder.This may be one of the reasons of the leakage of the overturning cylinder.

关 键 词：液压翻转机构 翻转缸 AMESIM 气穴现象 

分 类 号：U463.81[机械工程—车辆工程]