摘要
根据流变学原理,混凝土在输送管道中的流动为"柱塞流"。采用AMESim建立混凝土泵开式液压系统仿真模型,并进行仿真。结果表明,混凝土泵液压系统压力冲击主要出现在泵送开始时和泵送结束后换向阀换向时。在换向阀换向之前降低进入主油缸油液流量,可以降低换向压力冲击。此外,根据液压系统压力和活塞位移之间的相关性,通过测量液压系统压力和活塞位移,并对压力和位移变化曲线进行分析,可以计算混凝土泵实时排量。
Based on the principle of rheology, the flow of concrete in the transport pipeline is ＂plug flow＂. The simulation model of concrete pump open hydraulic system was established by using AMESim, and the simulation was carried out. The simulation result indicates that the pressure shock of concrete pump hydraulic system occurs at the time of the beginning and the end of pumping while changing the direction of the switch valve. The pressure shock can be reduced through reducing the flow rate of oil which flows into the master cylinder before changing the direction of the switch valve. The real-time discharge of the concrete pump can be calculated by measuring and analyzing the hydraulic system pressure and the piston displacement on the base of the correlation between them.
出处
《机床与液压》
北大核心
2010年第21期99-101,共3页
Machine Tool & Hydraulics
基金
贵州省自然科学基金项目(黔科合J字[2009]2234号)
贵州大学引进人才基金项目(贵大人基合字(2008)039号)
国家自然科学基金资助项目(50475103)
贵州省重大专项基金项目(黔科合重大专项字(2009)6003号)
