摘要
为实现剪叉式高空作业车在指定工况下的安全作业,需要充分考虑内外各种干扰,借助虚功原理对六级剪叉机构进行了相应的力学分析,推出了液压缸的推力与起升角度之间的函数关系;此外,以六级剪叉机构的上车液压系统作为研究对象,借助工程仿真软件AMESim的液压库、平面机构库以及信号库,建立了相应的液控仿真模型。研究结果表明:在相同起升高度的情况下,随着起升角度的不断变化,采用在液压管路中配置节流阀、蓄能器以及调速电机的方式,可以有效地提高液压系统的动态性能以及工作平台的运动稳定性,保证高空作业的安全可靠。
Aiming at realizing the safe operation of the scissor type aerial work vehicle under specified working conditions need to fully consider internal and external disturbances,the mechanical modeling of the six-level scissor mechanism was carried out to introduce the relationship between the thrust of the hydraulic cylinder and the lifting angle by virtue of the principle of virtual work.In addition,the hydraulic system of the six-level scissor mechanism was taken as the research object,the hydraulic library,plane mechanism library and signal library of the engineering simulation software AMESim were used to model and simulate the upper part of the scissor type aerial work vehicle.The results indicate that when working in the same lifting height,as the angle of lifting changes,the configuration of the throttle valve,accumulator,and speed regulating motor in the hydraulic pipeline can effectively improve the dynamic performance of the hydraulic system and the stability of the working platform and ensure safe and reliable for working at heights.
作者
刘志
纪爱敏
张磊
王豪
赵仲航
LIU Zhi;JI Ai-min;ZHANG Lei;WANG Hao;ZHAO Zhong-hang(College of Mechanical and Electrical Engineering,Hohai University,Changzhou 213022,China)
出处
《机电工程》
CAS
北大核心
2020年第6期600-606,共7页
Journal of Mechanical & Electrical Engineering
基金
国家自然科学基金资助项目(51175146,51805144)
江苏省研究生科研与实践创新计划项目(SJCX19_0163)
中央高校基本科研业务专项基金资助项目(2014-CZB19020036)
常州市高空作业装备与智能技术重点实验室开放基金资助项目(CLAI201805)。