REXROTH比例阀0811404919

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REXROTH比例阀0811404919  力士乐REXROTH比例阀，REXROTH阀工作原理

REXROTH力士乐比例阀其实缺点极多：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,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.增大,即左增大,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。

 

比例控制阀主要用於开回路控制(open loop cool);比例控制阀的输出量与输入信号成比例关系，且比例控制阀内电磁线圈所产生的磁力大小与电流成正比。

在传统型式的液压控制阀中，只能对液压进行定值控制，例如:压力阀在某个设定压力下作动，流量阀保持通过所设定的流量，方向阀对於液流方向通/断的切换。因此这些控制阀组成的系统功能都受到一些限制，随著技术的进步，许多液压系统要求流量和压力能连续或按比例地随控制阀输入信号的改变而变化。液压伺服系统虽能满足其要求，而且精度很高，但对於大部分的工业来说，他们并不要求系统有如此高的品质，而希望在保证一定控制性能的条件下，同时价格低廉，工作可靠，维护简单，所以比例控制阀就是在这种背景下发展起来的。

比例控制阀可分为压力控制阀，流量控制及方向控制阀三类。

压力控制阀:用比例电磁阀取代引导式溢流阀的手调装置便成为引导式比例溢流阀，其输出的液压压力由输入信号连续或按比例控制。

流量控制阀:用比例电磁阀取代节流阀或调速阀的手调装置而以输入信号控制节流阀或调速阀之节流口开度，可连续或按比例地控制其输出流量。故节流口的开度便可由输入信号的电压大小决定。

方向控制阀:比例电磁阀取代方向阀的一般电磁阀构成直动式比例方向阀，其滑轴不但可以换位，而且换位的行程可以连续或按比例地变化，因而连通油口间的通油面积也可以连续或按比例地变化，所以比例方向控制阀不但能控制执行元件的运动方向外，还能控制其速度。

 

DB，DBW，先导式溢流阀，溢流阀

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R900907684 DBW20B2-5X/315-6EG24N9K4

R900908477 DBW30B2-5X/350-6EG24N9K4

R900908999 DBW10B3-5X/315-6EG24N9K4

R900911748 DBW20B2-5X/315-6EW230N9K4

R900912485 DBW10B2-5X/315-6EW230N9K4

R900912486 DBW10B2-5X/200-6EW230N9K4

R900912860 DBW20B2-5X/200-6EG24N9K4

R900912910 DBW10B2-5X/200-6EG24N9K4

R900914415 DBW10B2-5X/315-6EG24N9K4SO160

R900915418 DBW10A3-5X/315-6EG24N9K4

R900916045 DBE6-1X/315YG24NK4M

R900916161 DBW20A2-5X/350-6EG24N9K4

R900916252 DBET-5X/50G24K4M

R900916932 DBW20BG2-5X/315-6EG24N9K4

R900917317 DBW20A2-5X/315-6EW230N9K4

R900917569 DBW20B2-5X/315U6EG24N9K4

R900917679 DBW10B2-5X/100U6EG24N9K4

R900918162 DBW10B2-5X/315-6EG24N9K4V

R900919359 DBEE6-1X/100YG24K31M

R900919583 DBW20A2-5X/100-6EG24N9K4

R900919584 DBW30B2-5X/315-6EG24N9K4SO160

R900919859 DBW10A2-5X/350-6EG24N9K4V

R900919860 DB20-2-5X/200XV

R900920619 DBW20B1-5X/315-6EG24N9K4

R900920785 DBW20B2-5X/100-6EW230N9K4

R900920863 DBW10B1-5X/315-6EG24N9K4

R900921225 DBW10B1-5X/100-6EG24N9K4

R900921503 DBW20A2-5X/315-6EG24N9K4SO160

R900921597 DBEM30-3X/200YG24K4M

R900921754 DBW20A2-5X/315-6EG24N9K4

R900921853 DBW30A2-5X/315-6EG24N9K4

R900922037 DBW20B2-5X/350S6EG24N9K4R12

R900922308 DBW20B2-5X/100-6EG24N9K4

R900922310 DBW30B2-5X/100-6EG24N9K4

R900922311 DBW30B2-5X/315-6EG24N9K4

R900922479 DBW30B2-5X/100-6EW230N9K4

R900923066 DBW30B1-5X/200-6EG24N9K4

R900923103 DBW10B1-5X/200-6EG24N9K4

R900923132 DBW10B3-5X/315S6EG24N9K4R12

R900923238 DBEM10-5X/200YG24K4M

R900923239 DBEM20-5X/200YG24K4M

R900923241 DBEM20-5X/315YG24K4M

R900923462 DBW20B1-5X/315-6EW110N9K4

R900923633 DBW20B1-5X/315-6EW230N9K4

R900924235 DBWCB2-5X/100-6EG24N9K4

R900925192 DBW10B2-5X/350-6EG24N9K4

R900926054 DBW10A2-5X/315-6EG24N9K4

R900926249 DBW10A2-5X/200-6EG24N9K4

R900926499 DBW10B2-5X/200-6EG110N9K4

R900926544 DBW20A2-5X/315S6EG24N9K4R12

R900927258 DBW30A2-5X/315-6EG24N9K4SO160

R900927502 DBW30BG2-5X/100-6EG24N9K4

R900928041 DBW20B3-5X/315-6EG24N9K4

R900929099 DBAR30H2N1X/200

R900929289 DBW10B2-5X/200U6EG24N9K4

R900929526 DBW20BG2-5X/200-6EG24N9K4

R900930083 DBW10A3-5X/200-6EG24N9K4

R900930930 DBW10B2-5X/315U6EG24N9K4

R900931037 DBW30A3-5X/315-6EG24N9K4

R900934162 DBDS20G1X/25-20

R900935659 DBW20B1-5X/200-6EG24N9K4

R900936056 DBW10B1-5X/315-6EW230N9K4

R900936155 DBW30A2-5X/315-6EW230N9K4

R900937651 DBW30A2N5X/350-6EG24N9K4V

R900938446 DBW10BG2-4X/200-6EG48N9K4W65

R900939204 DBW20A2-5X/200-6EG24N9K4

R900939736 DBW20A1-5X/315-6EG24N9K4

R900940061 DBA30H2-2X/350

R900941174 DBW10A1-5X/200-6EG24N9K4

R900941175 DBW20A1-5X/200-6EG24N9K4

R900941261 DBEME10-5X/350YG24K31M

R900941300 DBEM10-5X/200XYG24K4M-1

R900941439 DBW10B2-5X/100S6EG24N9K4R12

R900941761 DBW30B2-5X/100U6EG24N9K4

R900942088 DBW30A2-5X/350-6EG24N9K4V

R900943143 DBEM10-5X/100YG24K4M

R900943513 DBW30A2N5X/315-6EG24N9K4

R900944955 DBW20B2-5X/350-6EW230N9K4

R900945722 DBW20A2-5X/315-6EG24N9K4V

R900947687 DBW30B2-5X/100U6EG110N9K4

R900948803 DBEE6-1X/100G24K31M

R900950034 DBW20A2-5X/350S6EG24N9K4R12

R900950095 DBW30A2-5X/350-6EG24N9K4

R900951033 DBW30B2-5X/315XU6EG24N9K4

R900951210 DBW30B2-5X/350S6EG24N9K4R12

R900952408 DBE10-5X/50YG24K4M

R900952672 DBW20B2-5X/100-6EG110N9K4

R900952749 DBW20B2-5X/200-6EG110N9K4

R900952866 DB3U30E2-5X/315-6EG24N9K4

R900953561 DBW30A1-5X/200-6EG24N9K4R12

R900954320 DBAW30BH2N1X/315S6EG24N9K4R12

R900954709 DBEME20-5X/200YG24K31M

R900957638 DBW20B2-5X/350YS6EG24N9K4R10

R900958973 DBW10A2-5X/315-6EG24N9K4V

R900963856 DBW20B2-5X/315-6EG24N9K4SO160

R900965477 DBW10A1-5X/315-6EG24N9K4

R900965918 DBW20A2-5X/315U6EG24N9K4

R900966174 DBAW15BH2-2X/315S6EG24N9K4

R900968098 DBW10B7-5X/315-6EG24N9K4

R900969416 DBETRE-2X/180G24K31A1M

R900972189 DBW30A2-5X/315U6EG24N9K4

R900973020 DBW20A2-5X/315-6EG24N9K4VSO160

R900973417 DBW20B2-5X/100YU6EG24N9K4

R900974252 DB30-2N5X/350

R900974700 DBW10A2-5X/350-6EG24N9K4

R900974896 DBW20B2-5X/200U6EG24N9K4

R900976443 DB30-2N5X/315

R900977659 DBE6-1X/100G24K4M

R900977802 DBEM20-5X/200XYG24NK4M-1

R901000496 DBW10B2-5X/350U6EG24N9K4

R901000842 DBET-6X/50G24K4V

R901000846 DBET-6X/200G24K4V

R901000847 DBET-6X/315G24K4V

R901000848 DBET-6X/350G24K4V

R901003898 DBW30B2-5X/100-6EG110N9K4

R901008844 DBAW40BF1N1X/150S6EG24N9K4R12E

R901019708 DBW10A1-5X/315U6EG24N9K4

R901022834 DBW20B1-5X/200U6EG24N9K4

R901022864 DBW20B7-5X/315U6EG24N9K4

R901029966 DBETE-6X/50G24K31A1V

R901029967 DBETE-6X/100G24K31A1V

R901029968 DBETE-6X/200G24K31A1V

R901029969 DBETE-6X/315G24K31A1V

R901029970 DBETE-6X/350G24K31A1V

R901031946 DBW30A2N5X/315YS6EG24N9K4R12E

R901045243 DBETE-6X/200G24K31F1V

R901045246 DBETE-6X/315G24K31F1V

R901046798 DB3U30H2-5X/315YU6EG24N9K4

R901055731 DBW30A2N5X/350S6EG24N9K4R12

R901059048 DB20-1-5X/315E

R901064278 DBETE-6X/315YG24K31A1V

R901064677 DBETE-6X/200YG24K31A1V

R901065548 DBET-6X/200YG24K4V

R901067929 DB30-1N5X/200

R901067957 DB30-2N5X/200YU

R901071073 DBEP6A06-1X/16AG24K4M

R901079645 DBW30A2N5X/350-6EG24N9K4

R901086783 DBW10B2-5X/200U6EG110N9K4

R901089509 DBW20AG7-5X/315-6EG24N9K4

R901092803 DBDS20K1X/315-230

R901103801 DBETE-6X/200YG24K31F1V

R901104476 DBETE-6X/420YG24K31A1V

R901120259 DBW30B2-5X/315-6EG24N9K4VSO160

R901127685 DBAW30BH1N1X/200-6EG24N9K4

R901139818 DBAW15BH2-2X/200-170-6EG24N9K4

R901157672 DBW20A2-5X/315-6EG24N9K4R12V

R901166346 DBW20A2-5X/200YS6EG24N9K4R12

R901172352 DBW20A2-5X/315X6EG110N9K4

R901175380 DBWTA2-5X/100-6EG24N9K4

R901180789 DBW20B7-5X/315S6EG24N9K4R12

R901185603 DBW20A7-5X/315-6EG24N9K4R12V

R901202498 DBW52AP1-3X/100U6EW230N9K4

R901204235 DBW20A2-5X/100-6EG24N9K4R12E

R901204290 DBW20A1-5X/350U6EG24N9K4

R901204952 DB30-1N5X/200XU

R901206101 DBW30A1-5X/350U6EG24N9K4

R901208433 DBW30A1-5X/315S6EG24N9K4R12

R901208443 DBW30B2-5X/315YU6EG24N9K4

R901211806 DB20-2-5X/50XV

R901219147 DB20-7-5X/50XV

R901219149 DB20-7-5X/200XV

0822901043 DBL-ACTINGPNEU.CY

R909831318 DBLBREAK-OFFPLUGN02.023-M6

R909831319 DBLBREAK-OFFPLUGN02.023-M8

R909831320 DBLBREAK-OFFPLUGN02.023-M10

通径(NG)10至32压力至35MPa流量至650L/min

 

用于底板安装安装面按DIN24340E型，ISO6264和CETOP-RP121H，用于螺纹连接，用于油路块安装4种调整元件旋钮带护罩的调节螺栓带刻度的有锁旋钮带刻度旋钮5种设定压力借助于安装在其上的电磁方向阀操作卸荷可选的切换时间延迟（仅DBW型）