旋转式旁通型数字调速阀仿真及实验研究  

Simulation and experimental research of rotary bypass digital speed regulating valve

作　　者：靳天毅 吴娟 杜秉华 郭凯宇 JIN Tian-yi;WU Juan;DU Bing-hua;GUO Kai-yu(College of Mechanical and Vehicle Engineering,Taiyuan University of Technology,Taiyuan 030024,China;Shanxi Mine Fluid Control Engineering Laboratory,Taiyuan 030024,China;National-local Joint Engineering Laboratory of Mine Fluid Control,Taiyuan 030024,China)

机构地区：[1]太原理工大学机械与运载工程学院,山西太原030024 [2]山西省矿山流体控制工程实验室,山西太原030024 [3]矿山流体控制国家地方联合工程实验室,山西太原030024

出　　处：《机电工程》2022年第10期1412-1417,共6页Journal of Mechanical & Electrical Engineering

基　　金：国家自然科学基金资助项目(U1910212)。

摘　　要：由于综采工作面处于强时变负载工况下,支架液压系统进行移架时,会引起较大的速度波动,给液压支架直线度智能化调节造成很大的难度,针对这一问题,设计了一种适用于支架工况的新型旋转式旁通型数字调速阀。首先,通过对旋转式旁通型数字调整阀进行理论分析,得到了影响其调速特性的主要相关参数;然后,建立了数字调速阀的SimulationX模型,对旁通型调速阀不同参数下的速度响应特性进行了定量分析,研究了其调速特性;最后,搭建了模拟实验平台,并进行了实验测试,测试结果验证了仿真的可行性分析了负载变化对调速阀调速性能的影响。研究结果表明:将旁通型调速阀应用于推移回路时,移架速度波动较小;随着弹簧刚度增大,预压缩量减小,调速阀的速度峰值减小,且移架到达稳定速度所用时间越少;不同负载输入下,速度响应曲线不同,相同负载峰值情况下,其中输入正弦负载时速度最大;验证了旁通型调速阀应用于移架的可行性,可以为后续阀的参数优化提供依据。Due to the strong time-varying load condition of fully mechanized mining face,the support hydraulic system will cause large speed fluctuation when moving the support,which makes it very difficult to adjust the straightness of the hydraulic support intelligently.To solve the problem,a new type of rotary bypass type digital speed control valve suitable for bracket working condition was designed.Firstly,through theoretical analysis of the rotary bypass type digital control valve,the main relevant parameters affecting its speed control characteristics were obtained.Then,the simulation X model of the digital speed control valve was established.The speed response characteristics of the bypass speed regulating valve under different parameters was quantitatively analyze.Its speed regulating characteristics was studied.Finally,by building a simulation experiment platform and conducting experimental tests,the influence of load changes on the speed control performance of the speed control valve was analyzed.The results show that when the bypass speed regulating valve is applied to the moving circuit,the fluctuation of moving speed is small.With the increase of spring stiffness,the precompression shrinkage decreases,the speed peak of speed regulating valve decreases,and the less time it takes to reach the stable speed.The speed response curves are different under different load inputs.Under the same peak load,the speed is the largest when sinusoidal load is input.The feasibility of applying the bypass speed regulating valve to the frame moving is provided,which provides a basis for the parameter optimization of the follow-up valve.

关 键 词：强时变负载工况 数字阀控缸 调速阀调速性能 SimulationX 速度响应特性 静力学分析 

分 类 号：TH137.52[机械工程—机械制造及自动化] TD421[矿业工程—矿山机电]