非圆周节流槽在叉车多路阀上的应用

摘要

针对叉车多路阀微动特性性能的要求,对目前叉车多路阀上几种常见非圆周节流槽过流面积进行了分析.对阀芯位移与油口通断时形成的压力与流量特性参数进行了研究,运用MathCAD计算软件对现有U形节流槽进行了仿真计算,利用试验设备对U形节流槽的开启闭合进行了数据采集,并将仿真、计算所得数据与实际试验数据进行了对比,建立了较为准确的仿真模型.研究结果表明:通过模拟仿真可有效对叉车多路阀阀芯所需节流槽种类和分布状况进行设计研究,通过试验试制测试叉车新阀阀芯微动特性,可大大改善叉车多路阀阀芯的控制特性,减少研发时间.%Aiming at the requirements of the micro-dynamic characteristics of forklift's multi-channel valve, the flow area of non-circular throttling grooves was analyzed on some kind of forklift' multi-way valves, referred to the characteristic parameters of the pressure and flow which formed by the valve core displacements and oil openings,the existing U-notch was simulationed and analyzed by MathCAD software, date of the U-notch opened and closed were got by test equipment,the data of simulated and calculated were compared with the actual theo-retical testing data,it created a more accurate simulation model. The results indicate that the types and distribution of throttling slots for fork-lift multi-valve core could be designed and studied rapidly by simulated.The micro-dynamic characteristics of forklift's multi-channel valve was got by equipments,it could improve the control characteristics of forklift's multi-channel valve,reduce the research times,develop more kind of throttle grooves.