力士乐4WEH16E726HG24N9K4B10电液换向阀

力士乐4WEH16E726HG24N9K4B10电液换向阀

力士乐4WEH16E726HG24N9K4B10电液换向阀

产品简介：
电液换向阀和液控换向阀主要用在流量超过电磁换向阀正常工作允许范围的液压系统中，对执行元件的动作进行控制，或对油液的流动方向进行控制。

力士乐液压部分系列型号：

R902551285 ALA10VO100EK2ER/53L-VSD12K04P
R902554678 ALA10VO100EK2ER/53L-VSC12K01P
R902520688 ALA10VO100LA9DS/53L-VUD12K68-SO413
R902520689 ALA10VO100LA9DS/53L-VUD12K68-SO413
R902520712 ALA10VO100LA9DS/53L-VUD12N00-SO413
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R902520797 ALA10VO100LA9DS/53R-VSD12K15
R902520700 ALA10VO100LA9DS/53R-VUD12N00-SO413
R902463545 ALA10VO28ED72/53L-VRC12K01P
R902480542 ALA10VO28EP2D/53L-VSC12N00P-S2936
R902548635 ALA10VO28EP2D/53L-VSC12N00P-S4756
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R902485833 ALA10VO28EP2ER/53R-VSC12N00P
R902449497 ALA10VO45EK1DF/53L-VUC62K68PEBASIC
R902447453 ALA10VO45EK1DF/53R-VUC62N00PEBASIC*PT*
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R902453327 ALA10VO85EK2DS/53R-VSC12K68P-SO413
R902453285 ALA10VO85EK2DS/53R-VUC11N00P-S1973
R902453150 ALA10VO85EP1D/53*UNGUEL***H-S2211
R902466693 ALA10VO85EP1D/53L-VUC12K52P-S4576
R902456106 ALA10VO85EP1D/53R-VKC62N00H-S2211
R902517067 ALA10VO85EP1DS/53L-VUC11N00P-S2270
R902406784 ALA10VO85EP1DS/53L-VUC12K52PES2147
R902506586 ALA10VO85EP2D/53L-VUC61N00P-SO526*FNI*
R902454647 ALA10VNO85DRS/53L-VRD12K68-S2213
R902455941 ALA10VO28DRS/52R-VR0N00-S2373
R902520541 ALA10VO85DRS/53L-VUD12N00
R902549743 ALA10VO100EK2DS/53R-VUC12K68P
R902519360 ALA10VO100EK2DS/53R-VUD12N00P-SO833
R910998870 ALA10VSO10DFR/52R-PPA14N00
R902539771 ALA10VSO10DFR/52R-VUC14N00-S3757
R902410455 ALA10VSO10DFR1/52L-PPA14N00
R902424475 ALA10VSO10DFR1/52L-PSC14N00
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R902456101 ALA10VSO10DR/52R-VUC64N00E
R902431252 ALA10VSO10DRG/52R-PKC64N00
R986120053 ALA10VO85DFR1/52L-VUC11N00-S1360REMAN
R986120220 ALA10VO28DFR1/52L-VCC64N00-S1420REMAN
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R986120041 ALA10VO28ED72/52R-VSC12N00T-S1318REMAN
R986120073 ALA10VO28LA8DS/53R-VSC12H00-S2035REMAN
R986120629 ALA10VO45FR1/52WX-VSC95N000-SO481REMAN
R986120636 ALA10VO45DFR1/52L-VSC11N00-S2343REMAN
R986120046 ALA10VO45DFR1/52L-VSC11N00-S1507REMAN
R986110563 ALA10VO45DFR1/52L-VSC11N00-S1507REMAN
R986120586 ALA10VO45DFR1/52L-VSC12N00-S1025REMAN
R986120075 ALA10VO45DFR1/52L-VSCXXH00CNH-S1640REMAN
R986120218 ALA10VO45DFR1/52L-VUC11N00-S1623REMAN
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R986120080 ALA10VO45DFR1/52L-VUC13N00-SO547REMAN
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R986120627 ALA10VO45DFR1/52R-PSC11N00-S1509REMAN
R986120171 ALA10VO45DFR1/52R-VCC73N00-S1624REMAN
R986120191 ALA10VO45DFR1/52R-VCC73N00-S1966REMAN
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R986120591 ALA10VO45DFR1/52R-VSC12K68-S1652REMAN
R986120173 ALA10VO45DR/52R-VUC12N00-S1124REMAN
R986120152 ALA10VO45DRG/52L-VUC11N00-S1407REMAN
R986120144 ALA10VO45DRG/52L-VSC11N00-SO794REMAN
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R986120146 ALA10VO45DRG/52L-VUC11N00-S1528REMAN
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R986120093 ALA10VO60DFR1/52L-VSD11N00ES1388REMAN
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产品图片：

基本信息
电液换向阀
是与电磁操纵的先导阀组合成一体的液动换向阀。

电液换向阀是用控制油路中的压力油推动阀芯。

电液换向阀是电磁换向阀和液控换向阀的组合，它是用电磁换向阀控制液控换向阀的动作，变换流体流动方向的控制阀。

电液换向阀和液控换向阀主要用在流量超过电磁换向阀正常工作允许范围的液压系统中，对执行元件的动作进行控制，或对油液的流动方向进行控制。

说明事项
1. 产品可任意安装，优先考虑水平位置。

2. 液压系统所用介质必须过滤，过滤精度至少20μm。

3. 固定螺钉请按样本中所列参数选用。

4. 与阀连接的表面，粗糙度要求Ra0.8，平面度要求0.01/100mm

工作原理: 。。 当两个电磁阀线圈通电时，平衡孔回路关闭，泄流孔回路打开，活塞上腔泄压，活塞上行，阀门打开。反之，活塞下行，阀门关闭。在阀门开启和关闭过程中，可将流量信号及阀塞位置信号传送给计算机，经过计算机处理后发出相应的指令，控制两个电磁导阀的通、断电状态，使活塞的上下腔的液压差产生变化，从而将活塞控制在所需的开启高度上，实现对管道介质流量的控制。当向动圈输入正向节制电流时，电磁力使动圈与节制阀芯向下移动，此时上节流口关小，下节流口开大，随动活塞上腔的压力升高，从而推动活塞下移当活塞位移到达节制阀芯的位移量时，上、下节流口过流面积重又恢复相等，随动活塞两头的液压推力恢复相等，随动活塞便不用人的劳力稳定在这一新的平衡位置。

主阀的管口（4）连接于压缩机高压排气口，管口（2）连接于压缩机低压吸气口。（1）、（3）两个管口分别连接蒸发器的出气口和冷凝器的进气口。（3）接冷凝器进气口，（1）接蒸发器出气口。

当电磁阀不通电时，系统工作于制冷状态，控制阀因弹簧1的作用，阀心移至左端，处于释放状态，此时毛细管E与C连通。因为E接在低压吸气管上，所以毛细管C及主阀内左端空间均为低压，高压气体由主阀管口4进入主阀，经活塞I的排气孔使主阀内的右端空间成为高压，推动主阀阀芯移至左端，管口2与管口1连通而管口4与管口3连通，系统形成制冷循环状态。

当电磁阀通电时，电磁力吸动控制阀阀芯向右移动，毛细管E与D相连。主阀内右端空间成为低压，高压气体经活塞II的排气孔进入主阀内左端空间，推动阀芯移向右端，管口2与管口3连通而管口4与管口1连通，蒸发器、冷凝器的功能对换，系统转换成制热循环状态。 

电液换向阀的特点：

电液换向阀由电磁换向阀和液动换向阀两部分组成，其中电磁换向阀起先导阀作用，而液动换向阀起主阀作用，控制执行元件的主油路。它换向平稳，但换向时间长；允许通过的流量大，是大流量阀。

1、结构简单、体积小、质量轻，加工方便。

2、密封性能良好，内泄量少。

3、换向响应速度快，反应灵敏。

4、换向可靠性高。

电液换向阀的分类：

电液换向阀主要由四通气动换向阀（主阀）、电磁换向阀（控制阀）及毛细管组成。主阀内由滑块、活塞组成活动阀芯，主阀阀体两端有通孔可使两端的毛细管与阀体内空间相连通，滑块两端分别固定有活塞，活塞两边的空间可通过活塞上的排气孔相通。控制阀由阀体和电磁线圈组成。阀体内有针型阀芯。主阀与控制阀之间有三根（或四根）毛细管相连，形成电液换向阀的整体。

包含比例流量阀、比例压力阀、比例换向阀。依据工程机械液压操作的特色，以构造情势划分电液换向阀主要有两类：一类是螺旋插装式比例阀，另一类是滑阀式比例阀。

1、螺旋插装式比例阀是通过螺纹将电磁比例插装件固定在油路集成块上的元件，螺旋插装阀具有运用灵巧、节俭管路和本钱低廉等特色，近年来在工程机械上的利用越来越普遍。常用的螺旋插装式比例阀有二通、三通、四通和多通等情势，二通式比例阀重要是比例节流阀，它常与其它元件一起构成复合阀，对流量、压力进行把持；三通式比例阀重要是比例减压阀，也是移动式机械液压体系中利用较多的比例阀，它重要是对液动操作多路阀的先导油路进行操作。应用三通式比例减压阀可以取代传统的手动减压式先导阀，它比手动的先导阀具有更多的机动性和更高的掌握精度。可以制成如图1所示的比例伺服把持手动多路阀，依据不同的输进信号，减压阀使输出活塞具有不同的压力或流量进而实现对多路阀阀芯的位移进行比例节制。四通或多通的螺旋插装式比例阀可以对工作装置实现单独的节制。

2、电液滑阀式比例多路阀是比拟幻想的电液转换控制元件，它不仅保存了手动多路阀的基础功能，还增添了地位电反馈的比例伺服操作和负载传感等的控制手腕。所以它是工程机械分配阀的更新换代产品。

出于制作本钱的斟酌和工程机械控制精度请求不高的特色，一般比例多路阀内不配置位移感应传感器，也不具有电子检测和纠错。所以，阀芯位移量轻易受负载变更引起的压力波动的影响，操作进程中要靠视觉察看来保证作业的完成。在电控、远控操作时更应注意外界干预的影响。近来，由于电子技巧的发展，人们越来越多地采取内装的差动变压器等位移传感器构成阀芯地位移动的检测，实现阀芯位移闭环控制。这种由电磁比例阀、地位反馈传感器、驱动放大器和其它电子电路组成的高度集成的比例阀，具有必定的校订，可以有效地战胜一般比例阀的毛病，使控制精度得到较大进步。
 

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