REXROTH 0811404774 力士乐比例溢流阀  博世力士乐优质商品 低价销售 现货特价 优质供应 全国联保 欢迎来电咨询

我公司专业代理博世力士乐（BOSCH-REXROTH）、阿托斯ATOS、派克Parker、迪普马DUPLOMATIC、油研YUKEN;本特利bentley、贝加莱B&R、西门子、光洋KOYO，美国ASCO，美国PARKER派克 美国伊顿威格士VICKERS泵阀 日本大金DAIKIN电磁阀 美国艾尔泰克电磁阀 美国阿泰克电磁阀  等系列进口产品

REXROTH 0811404774 力士乐比例溢流阀  力士乐REXROTH比例阀，REXROTH阀工作原理

REXROTH力士乐比例阀其实缺点较多：能耗浪费大、容易出故障、抗污染能力差、价格昂贵等等等等，好处只有一个：动态性能是所有液压阀中较高的。就凭着这一个优点，在很多对动态特性要求高的场合不得不使用伺服阀，如飞机火箭的舵机控制、汽轮机调速等等。动态要求低一点的，基本上都是比例阀的天下了。 

一般说来，好像伺服系统都是闭环控制，比例多用于开环控制；其次比例阀类型要多，有比例压力、流量控制阀等，控制比伺服药灵活一些。从他们内部结构看，伺服阀多是零遮盖，比例阀则有一定的死区，控制精度要低，向应要慢。但从发展趋势看，特别在比例方向流量控制阀和伺服阀方面，两者性能差别逐渐在缩小，另外比例阀的成本比伺服阀要低许多，抗污染能力也强！ 

伺服阀与比例阀的区别 

REXROTH力士乐比例阀与比例阀之间的差别并没有严格的规定，因为比例阀的性能越来越好，逐渐向伺服阀靠近，所以近些年出现了比例伺服阀。 

力士乐REXROTH比例阀，REXROTH阀工作原理REXROTH力士乐比例阀非要说差别，主要体现在一下几点： 

伺服阀中位没有死区，比例阀有中位死区； 

伺服阀的频响（响应频率）更高，可以高达200Hz左右，比例阀一般较高几十Hz； 

伺服阀对液压油液的要求更高，需要精过滤才行，否则容易堵塞，比例阀要求低一些。 

REXROTH力士乐比例伺服阀性能介于伺服阀和比例阀之间。 

REXROTH力士乐比例换向阀属于比例阀的一种，用来控制流量和流向。

力士乐REXROTH比例阀，REXROTH阀工作原理

力士乐Rexroth比例阀在使用过程中,应注意对感载比例阀的检查调整.当感载弹簧过松时,后轮制动力就会减小,此时应调整感载弹簧,但不可调得过紧,否则会使后轮制动力太大而失去侧向控制能力,发生甩尾。正确的调整方法是.在平坦的地面上使车身落地,车辆空载,调整感载弹簧,使杠杆与活塞间无间隙即可.在有条件的情况下,可采用准确的调整方法.通过测量前后轮制动管路压力,绘制压力分配特性曲线,确认调整是否合格。

德国Rexroth力士乐比例阀的工作原理，REXROTH力士乐比例阀结构，力士乐比例阀作用

REXROTH力士乐比例阀当左侧受力大于右侧受力与感载弹簧预紧力之和时（此时的压力为Ps）,活塞不断右移,较后使阀门与阀座接触而关闭,将输入输出油路隔绝,达到平衡状态。P1若进一步升高时,则活塞左移,阀门再度打开,制动液流入出油口,使P2也升高。

德国rexroth比例阀VT-NE30-2X的输入压力为零.即.;时,输出腔的压力通过比例阀皮圈凸筋间空酸从唇口泄去高压,同时,当比例阀芯所受的弹簧力大于向右的液压力时,比例阀弹簧将比例阀芯推回原始位置,使比例阀芯与比例阀皮圈内孔完全分离而完全泄压.此时输入输出压力为零.随着输入压力.加大,即左加大,使比例滑阀单向力平衡遭破坏.当<>&;6-时,比例阀芯左移与比例阀皮圈产生间隙形成节流并混合比倒阀常见的故障为:1,输入输出压力同步.2,低压时辅人输出压力同步,高压时输入输出压力正常.3,低压时输入输出压力正常,高压时输入输出压力不正常.,1994.№为零时为混合比倒圉工作性能试验示意图.试验时,先将管内的空气排净,然后分别取低,中,高三个压力进行试验,输入辅出压力符合即为合格。

Rexroth力士乐比例阀奥迪四轮驱动轿车制动系统在关闭ABS后,感载比例阀可用于防止后轮的过制动。当汽车直线行驶时,两后轮的制动压力可根据车辆载荷增减;当汽车左转弯时,左后轮载荷下降,由于感载比例阀位于左后轮附近,可同样起作用使两后轮的制动压力都下降.而当汽车右转弯时,右后轮载荷减小,汽车的侧向加速度使感载比例阀起作用,降低右后轮的制动压力。这样的自动调节使前、后轮的制动力分配和左、右后轮的制动力分配都接近理想的制动力分配,从而提高了制动安全性。 

上海韦米机电设备有限公司位于浦东金桥是全国工业传动流体自动化领域实力较强的经销代理商，有着丰富的气动液压技术服务、工业销售及全部采购的经验，主营产品涉及液压泵阀（电磁阀、柱塞泵拳头产品）、工控产品、驱动模块、伺服电机、可编程控制器PLC、数控传动、传感器系列、电源、气动元件、工业仪器仪表。具体主要经营品牌及产品如下:

博世力士乐rexroth工业液压气动元件大量现货（电磁换向阀、节流阀、单向阀、比例阀、伺服阀、安全溢流阀、流量控制阀、减压阀、调节阀、压力继电器、比例放大板、放大器，轴向柱塞泵、叶片泵、齿轮泵，伺服驱动器、伺服电机，气动元件、气动阀、气缸等），部分系列型号：

电磁阀：4WE6、4WE10、4WE16；电液阀：4WEH10H、4WEH16、4WEH25，

单向阀：S10A、S20A、Z1S、Z2S、SL10、SL20、SV10、SV20、RVP，插装阀：LC、LFA

溢流阀：DB、DBW、DBET、DBD、ZDB、Z2DB，减压阀：DR6DP、DR10DP、ZDR6、ZDR10、DR-4X、DR-5X

节流阀：Z2FS6、Z2FS10、Z2FS16、Z2FS22；调速阀：2FRM5、2FRM10、2FRM16，

平衡阀：FD12FA、FD12PA、FD12KA、FD16FA，继电器：HED80、HED40，电子单元：VT、0811

比例方向阀：4WRA、4WRAE、4WRE、4WREE、4WREEM、4WRH、4WRZ、4WRZE、4WRKE、4WRBKE、4WS2EM

高频响方向阀：4WRPH、4WRPEH、5WRP、5WRPE、4WRREH、4WRP、4WRPE、4WRP(E)H、4WRSE、4WRSEH、4WRPNH、4WRL、4WRLE、4WRVE、4WRGE、4WRL、4WRLE、4WRDE、3WRCBH，伺服系统：HAS、HNL、HCS、HNL

柱塞泵：A4VSO、A10VSO、A2FO，定量马达：A2FM，A4FM，A10FM/E， 齿轮泵：0510、AZPF，叶片泵：PV7

意大利阿托斯ATOS及迪普马DUPLOMATIC、美国Parker派克及EATON VICKERS伊顿 威格士液压、日本YUKEN油研泵阀优势现货系列（电磁阀换向阀、压力开关、柱塞泵、齿轮泵、比例阀、截止阀、开关阀等），

奥地利贝加莱B&R  br-automation自动化配品配件货期短现货多（伺服驱动器、触摸屏、工控机、CPU模块、总线控制器、X20\2003\2005\2010系统中各类功能模块等）

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A10VSO71DFR1/31R-PPA12N00

A10VSO71DFR1/32R-VPB22U99（四孔安装）

A10VSO58DFR1/31R-PPA12N00

A10VSO45DFR1/31R-PPA12N00

A10VSO28DFR1/31R－PPA12N00

A10VSO18DFR1/31R－PPA12N00

FD16PA10/B03/2

FD16PA10/B03/2

FD12PA10/B03/2

A10VS0140DFR1/32R-VPB22U99N00

A10VSO140DFR1/31R-PPB12NOO

A10VSO140DFR1/31R-PPB12NOO

A10VS0100DR/31R-PPA12N00

A10VS0100DFR1/31R-PPA12N00

A10VS0100DFR1/31R-PPA12N00

A10VS0100DFR1/32R-VPB22U99N00

A10VSO100DFR1/32R-PPB12N00

A10VS071DFR1/31R-PPA12N00

A10VSO45DFR1/31R-PPA12N00

A10VSO45DFR1/31R-PPA12N00

A10VSO45DFR1/31R-PPA12N00

A10VSO45DFR1/31R-PPA12N00

A10VSO28DFR/30R-PPB12N00

A10VSO28DFR1/31R-PPA12N00

A10VS018DR/52R-PPA1400

A10VSO18DGR/31R－PPA12N00

A10VSO18DFR/31R－PPA12N00

A10VSO18DFR1/31R-PPB12NOO