4WRZ10W8-50-7X/6EG24N9ETK4/D3M进口比例阀
武穴黎翔机电设备有限公司，询价联系人：何女士
询价电话：0713-6542758，18934630908
询价传真：0713-6542758
询价***: 736567721,704552157
R900925687 4WRAE10W1-30-22/G24N9K31/F1V液压系统设计时为提高系统稳定性，减少负载变化对速度的影响，要么牺牲部分我们想实现的功能，要么增加额外的液压元件，如调速阀、压力控制阀等，通过增加阻尼，提高系统速度刚度来提高系统的稳定性。但是这样元件的增加又会降低效率，浪费能源；还会使得整个系统的可靠性降低、增加成本。 R900699270 KOLBEN4WRDE16V200-41/
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R901063272 4WRDE10V50L-5X/6L24ETK9/MR-202
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R901061080 4WRDE25V220L-5X/6L24ETK9/M-576
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R900970880 4WRDE25V350P-5X/6L24K9/M
（2）由于换向结构的特殊性，使得用户在实现某一功能时必须购买相应的液压元件，再加上工程机械厂家会根据不同***终用户要求设计出相应的功能，这样会造成生产厂家采购同类、多规格的液压控制元件来满足不同功能要求的需要，不利于产品通用化及产品管理，同时会大大提高产品成本。
（3）由于执行机构进出液压油通过一根阀芯进行控制，单独控制执行机构两侧压力是不可能的。因此，出油侧背压作用于执行机构运动的反方向，随着出油侧背压升高，为保质执行机构的运动，必须提高进油侧压力。这样会使得液压系统消耗的功能增加，效率低，发热增加。
采用双阀芯技术的液压系统，由于执行机构进出油侧阀口阀芯位置及控制方式各自***，互不影响，这样通过对两阀芯控制方式的不同组合，利用软件编程能很好解决传统单阀系统不能解决的问题，同时还可以轻易实现传统液压系统中难以实现的功能。
2、双阀芯换向阀的两种基本控制策略
由于双阀芯换向两油口控制的灵活性，两油口可分别采取流量控制、压力控制或流量压力控制。正面介绍两种简单的控制策略。
（1）负载方向在整个工作过程中保持不变 0811404713 4WRLE10E80SJ-3X/G24ETKO/A1M
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0811404715 4WRLE10E1-80SJ-3X/G24ETKO/A1M
0811404720 4WRREH6VB40L-1X/G24KO/B5M
0811404721 4WRREH6VB24L-1X/G24KO/B5M
0811404722 4WRREH6VB12L-1X/G24KO/B5M
0811404723 4WRREH6VB8L-1X/G24KO/B5M
0811404725 4WRREH6VB15P-1X/G24KO/B5M
0811404726 4WRREH6VB25P-1X/G24KO/B5M
0811404729 4WRREH6VB15P-1X/G24KO/B5M-847
0811404738 4WRPEH6C1B4CL-2X/G24KO/A1M
0811404739 4WRPE6Q5-32M-2X/G24KO/A1M-836
0811404740 4WRPE6Q5-18M-2X/G24KO/A1M-836
0811404741 4WRPEH6CB04L-2X/G24KO/A1M
0811404742 4WRPE6R5-32M-2X/G24KO/A1M-838
0811404743 4WRPEH6CB24L-2X/G24KO/B5M
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0811404771 4WRPE10E80SJ-2X/G24KO/A1M
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0811404774 4WRPE10E1-80SJ-2X/G24KO/A1M
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0811404808 4WRPEH10C3***L-2X/G24KO/B5M
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0811404812 4WRPEH10******L-2X/G24KO/B5M
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0811404814 4WRPE10KB130P-2X/G24KO/B5M
0811404815 4WRPE10CH130P-2X/G24KO/B5M
0811404816 4WRPEH10C***P-2X/G24KO/F1M
0811404817 4WRPEH10C3B100L-2X/G24KO/F1M
0811404818 4WRPE10CB80M-2X/G24KO/A1M-846
0811404819 4WRPEH10C3***L-2X/G24KO/F1M
0811404820 4WRPEH10C1***L-2X/G24KO/A1M
0811404821 4WRPEH10C1B100L-2X/G24KO/A1M
0811404822 4WRPEH10C3B5CP-2X/G24KO/A1M
我们知道，对于汽车起重机、挖掘机、装载机等而言，其液压缸在整个工作过程中负载方向始终维持不变。下面以起重机变幅液压缸为例来探讨双阀芯的控制策略。
起重机变幅缸在工作过程中其受力，负载方向始终保持不变，因此我们可以采取液压缸有杆控用压力控制、无杆腔用流量控制的控制策略。
无杆腔流量控制是通过检测连接到无杆腔侧阀前后两侧的压差，再根据所需流入或流出流量的多少，计算出阀芯开口大小；有杆腔侧采用压力控制，使该侧维持一个低值的压力，使得更加节能、***。
由于我们在无杆腔采用了流量控制，因此原控制系统中所用的平衡阀可用一个液控单向阀来代替。这样可消除因平衡阀所带来的系统不稳定，从而提高系统稳定性。 R901024133 4WRDE10V50L-5X/6L24ETK9/MR-280
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（2）负载方向在工作过程中发生改变