剪叉式高空作业平台举升机构参数匹配研究  

Parameter matching of lifting mechanism of scissors aerial work platform

作　　者：刘吉超 张伟康 郑自冲 李怀义 刘治军 常奎 LIU Ji-chao;ZHANG Wei-kang;ZHENG Zi-chong;LI Huai-yi;LIU Zhi-jun;CHANG Kui(Jiangsu Advanced Construction Machinery Innovation Center Ltd,Xuzhou 221000,China;XCMG Fire-fighting Safety Equipment Co.,Ltd,Xuzhou 221100,China)

机构地区：[1]江苏汇智高端工程机械创新中心有限公司,江苏徐州221000 [2]徐工消防安全装备有限公司,江苏徐州221100

出　　处：《机电工程》2022年第2期173-179,共7页Journal of Mechanical & Electrical Engineering

基　　金：国家自然科学基金青年基金资助项目(6210020816)。

摘　　要：剪叉式高空作业平台通常利用液压油缸驱动剪叉机构的伸缩,以此来控制平台的升降,但是这种方式存在液压油泄漏和能量利用率低的问题,为此,对基于电推杆驱动的举升机构动力参数进行了匹配研究。首先,以某型剪叉式高空作业平台为载体,构建了其举升机构的动力学模型,确定了电推杆在平台升降过程中的动力参数;然后,采用铰点优化方法对电推杆铰点安装位置进行了优化设计,并结合举升机构的性能指标要求,对电推杆相应的动力参数进行了匹配;最后,为了验证电推杆动力参数匹配的有效性,将电推杆与剪叉式高空作业平台的原始液压系统进行了性能对比实验。研究结果表明:在平台举升性能不变的情况下,经参数匹配后的电推杆可有效地完成油缸的动作要求,且其能量利用率比采用液压油缸举升方式提升约81.3%,可有效地满足举升机构的性能要求,在解决油缸液压油泄漏问题的同时,还可通过提高电能利用率来降低整车电池装机容量,从而达到有效降低整车制造成本的目的。The scissors aerial working platform(SAWP)usually uses the hydraulic cylinder to drive the expansion and contraction of the scissor mechanism to control the lifting and lowering of the platform,but this method has the problems of hydraulic oil leakage and low energy utilization.Therefore,the dynamic parameter matching of the lifting mechanism driven by an electric linear actuator(ELA)was studied.Firstly,taking a SAWP as a research object,its lifting mechanism model was established to determine the dynamic parameters of the ELA in the lifting process of the platform.Then,the hinge point optimization method was used to optimize the installation position of the hinge point of the ELA.According to the lifting performance,the dynamic parameters of the ELA were matched.Finally,in order to verify the effectiveness of the dynamic parameter matching of the electric push rod,the performance comparison experiment was carried out between the electric push rod and the original hydraulic system of the scissor overhead working platform.The results show that the matching ELA after parameter matching can effectively complete the action requirements of the oil cylinder under the condition that the lifting performance of the platform remains unchanged,and the energy utilization rate of the ELA is about 81.3% higher than that of the hydraulic cylinder,which shows that the ELA can effectively meet the performance requirements of the lifting mechanism,and it can not only overcome the hydraulic oil leakage,but also reduce the installed capacity of the battery by improving the power utilization efficiency,so as to effectively reduce the manufacturing cost of the whole vehicle.

关 键 词：剪叉式高空作业平台 举升机构 电推杆 参数匹配 

分 类 号：TH211.6[机械工程—机械制造及自动化]