摘要
为解决动臂斗杆复合动作时动臂无法提升、合理分配多路阀内流量的问题,文章设计了一种节流阀,采用CFD软件对动臂联和斗杆联进行流场仿真,然后采用AMESim仿真最终确定结构参数。研究表明,采用新型节流阀后,动臂油缸与斗杆油缸压差变小,并且可以通过改变优先节流孔的尺寸来调节压力分布,从而解决流量分配问题。通过对动臂斗杆复合动作协调性研究及实验验证,最终确定所设计的节流阀优先节流孔面积为2.457mm2,等效直径为1.77mm,满足实际挖掘复合动作时动臂提升要求。
In order to solve the problem of boom lifting when boom and arm are going on compound movements, and solve the distribution problem of flow quantity in main control valve,a throttle valve is designed, the flow fields of boom and arm are simulated by using computational fluid dynamics （CFD） and the structural parameters are determined by using AMESim software. It is found that the new throttle valve can decrease the pressure difference between boom cylinder and arm cylinder, and the problem of flow distribution can be solved by changing the priority orifice size to regulate pressure distribution. Through the research and experiments on the multi-operational coordination of boom and arm, the area of priority orifice of throttle valve is ultimately determined as 2. 457 mmz and the equiva- lent diameter is 1.77 mm, meeting the requirements of boom lifting in actual excavation.
出处
《合肥工业大学学报（自然科学版）》
CAS
CSCD
北大核心
2015年第6期733-738,共6页
Journal of Hefei University of Technology：Natural Science
基金
湖南省科技厅重大专项资助项目(2012KJ0201)
湖南省科技计划-工业支撑计划资助项目(2013GK3008)
关键词
多路阀
复合动作
节流阀
压力损失
流量分配
main control valve
compound movement
throttle valve
pressure drop
flow distribution
