挤压力对干法制粒机挤压辊运行特性分析  

Analysis of Extrusion Pressure on the Operating Characteristics of the Extruding Roller of Dry Granulator

作　　者：李英娜[1,2] 王晓敏 韩雷 刘志民 LI Yingna;WANG Xiaomin;HAN Lei;LIU Zhimin(Shijiazhuang Coal Mining Machinery Co.,Ltd.,Shijiazhuang Hebei 050000,China;Hebei Coal Mining Machinery Technology Innovation Center,Shijiazhuang Hebei 050000,China;School of Mechanical and Equipment Engineering,Hebei University of Engineering,Handan Hebei 056038,China;Handan Engineering Senior Technical School,Handan Hebei 056000,China)

机构地区：[1]石家庄煤矿机械有限责任公司,河北石家庄050000 [2]河北省煤矿机械技术创新中心,河北石家庄050000 [3]河北工程大学机械与装备工程学院,河北邯郸056038 [4]邯郸工程高级技工学校,河北邯郸056000

出　　处：《机床与液压》2023年第13期184-188,共5页Machine Tool & Hydraulics

摘　　要：干法制粒机液压系统多采用普通电磁阀控制,即使采用了电液比例阀,也未形成闭环控制。针对此问题,基于电液比例技术对200型干法制粒机液压系统进行改进设计。依据挤压辊颤振力学模型,推导其竖直方向运动微分方程。利用AMESim和ADAMS软件构建机液联合仿真模型,研究不同的挤压成型压力对挤压辊运行特性的影响规律。结果表明:挤压辊运行特性较为平稳,挤压成型压力对位移特性的影响可以忽略不计;在系统启动瞬间,挤压辊速度和加速度波动峰值达到最大值;适当增大挤压成型压力,可有效改善挤压辊的速度和加速度波动特性;挤压成型压力对角加速度的影响要大于对角速度的影响。The hydraulic system of dry granulator is mostly controlled by common solenoid valve,even if the electro-hydraulic proportional valve is used,the closed-loop control is not formed.In view of the above problems,the hydraulic system of the 200-type dry granulator was improved and designed based on the electro-hydraulic proportional technology.According to the chatter mechanics model of the extruding roller,the vertical motion differential equation of the roller was deduced.The influence of different extrusion forming pressure on the operating characteristics of the extruding roller was studied by using AMESim and ADAMS to build a mechanical and hydraulic co-simulation model.The results show that the operating characteristics of the extruding roller are stable,and the influence of the extrusion pressure on the displacement characteristics can be neglected.At the moment of system starting up,the peak values of the speed and acceleration fluctuation of the extruding roller reach the maximum,and their fluctuation characteristics can be effectively improved by increasing the extrusion forming pressure.The influence of extrusion pressure on angular acceleration is greater than that on angular velocity.

关 键 词：电液比例技术 干法制粒机 挤压辊 运行特性 仿真分析 

分 类 号：TH137[机械工程—机械制造及自动化]