非圆周节流槽在叉车多路阀上的应用
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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 Math CAD 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 theoretical testing data,it created a more accurate simulation model. The results indicate that the types and distribution of throttling slots for forklift 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.
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 Math CAD 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 theoretical testing data,it created a more accurate simulation model. The results indicate that the types and distribution of throttling slots for forklift 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.
引文
[1]焦宗夏,彭传龙,吴帅.工程机械多路阀研究进展与发展展望[J].液压与气动,2013(11):1-6.
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[5]强红宾,张立杰,王帅,等.滑阀非典型阀口过流面积计算与仿真分析[J].液压与气动,2016(7):56-60.
[6]冀宏,王东升,刘小平,等.滑阀节流槽阀口的流量控制特性[J].农业机械学报,2009,40(1):198-202.
[7]易迪升,彭勇,兰秋华,等.典型滑阀节流槽的优化设计[J].液压与气动,2015(11):35-40.
[8]冀宏,傅新,杨华勇.几种典型液压阀口过流面积分析及计算[J].机床与液压,2003(5):14-16.
[9]周永飞,初长祥,郭小龙,等.几种常见液压阀节流槽过流面积估算及分析[J].液压气动与密封,2016(4):45-47.
[10]王晓娟.小型液压挖掘机多路阀阀芯节流槽研究及应用[D].成都:西南交通大学机械工程学院,2010.
[11]陆海娇.多路阀主阀口流量控制特性及液控单向阀启闭过程的研究[D].兰州:兰州理工大学能源与动力工程学院,2013.
[2]雷天觉.新编液压工程手册[M].北京:北京理工大学出版社,1998.
[3]叶小华,刘健,闵玉春,等.阀口形状对多路阀静态性能的影响研究[J].液压与气动,2013(8):54-57.
[4]冀宏,王东升,丁大力,等.非全周开口滑阀阀口面积计算方法[J].兰州理工大学学报,2008,34(6):48-51.
[5]强红宾,张立杰,王帅,等.滑阀非典型阀口过流面积计算与仿真分析[J].液压与气动,2016(7):56-60.
[6]冀宏,王东升,刘小平,等.滑阀节流槽阀口的流量控制特性[J].农业机械学报,2009,40(1):198-202.
[7]易迪升,彭勇,兰秋华,等.典型滑阀节流槽的优化设计[J].液压与气动,2015(11):35-40.
[8]冀宏,傅新,杨华勇.几种典型液压阀口过流面积分析及计算[J].机床与液压,2003(5):14-16.
[9]周永飞,初长祥,郭小龙,等.几种常见液压阀节流槽过流面积估算及分析[J].液压气动与密封,2016(4):45-47.
[10]王晓娟.小型液压挖掘机多路阀阀芯节流槽研究及应用[D].成都:西南交通大学机械工程学院,2010.
[11]陆海娇.多路阀主阀口流量控制特性及液控单向阀启闭过程的研究[D].兰州:兰州理工大学能源与动力工程学院,2013.