品牌：Rexroth/力士樂(lè)

型號(hào)：0811402019

功能類型：溢流閥

操作方法：電磁鐵

連接方式：疊加閥

結(jié)構(gòu)類型：滑閥

控制方式：電液比例閥

材質(zhì)：鑄鐵

適合介質(zhì)：油品

加工定制：非加工定制

公稱壓力：35MPa

公稱通徑：10mm

額定流量qn：100L/min

壓力調(diào)節(jié)范圍：10MPa

卸荷壓力：10MPa

使用油溫范圍：45℃

油液粘度：0.1m2/s

外形尺寸：50mm

重量：2kg

品牌：博世力士樂(lè)（BOSCH-REXROTH）

訂貨號(hào)：0811402019

型號(hào)：DBETX-1X/250G24-8NZ4M

名稱：比例溢流閥

供應(yīng)單位：武漢百士自動(dòng)化設(shè)備有限公司

REXROTH比例溢流閥0811402019

液壓比例控制系統(tǒng)

以比例控制元件完成動(dòng)力與運(yùn)動(dòng)方向控制，分為比例壓力閥、比例流量閥、比例方向閥及比例方向流量閥，可為模擬量輸入或數(shù)字量輸入，視是否帶反饋分為開環(huán)控制與閉環(huán)控制，一般獲得頻率不是很高(10HZ)以內(nèi)，高頻響閥可實(shí)現(xiàn)較高頻率。

若精度要求不高可考慮使用電液比例控制系統(tǒng)，一般電液比例控制系統(tǒng)可達(dá)至以下精度

位置精度- 3 mm

速度精度帶壓力補(bǔ)償器- 3%

加減速斜坡時(shí)間-0.5秒

壓力帶位移傳感器的產(chǎn)品-比例壓力閥設(shè)定的0.3% (如壓力設(shè)定為200bar,精度可達(dá)0.6bar)

一般的多驅(qū)動(dòng)器液壓系統(tǒng)皆要求流量及壓力控制，提供比例壓力及流量控制系統(tǒng)

開環(huán)式比例壓力及流量控制可用于定量泵及變量泵系統(tǒng)。

速度和流量比例控制的分別是:

流量控制只控制供油量,并不控制驅(qū)動(dòng)元件的運(yùn)動(dòng)方向;

若系統(tǒng)負(fù)載及變速要求高，則要使用速度控制系統(tǒng)。

速度比例控制多用于自動(dòng)化控制、注塑機(jī)、壓力機(jī)等

使用閉環(huán)的主要原因:

保持設(shè)定值不受外來(lái)干擾所影響

→在不同的工作壓力下保持穩(wěn)定的速度

→在不同的輸出力下保證相同位置

→在帶偏載的情況下作同步移動(dòng)

提高精度要求

→位置誤差低于1 mm

→壓力誤差低于1 ba

→需要控制加減速度

高動(dòng)態(tài)要求的系統(tǒng)

→模擬應(yīng)用

→測(cè)驗(yàn)應(yīng)用

武漢百士自動(dòng)化設(shè)備有限公司供應(yīng)產(chǎn)品，原廠原裝，質(zhì)量保障，價(jià)格優(yōu)惠；移動(dòng)電話：15307180902，商務(wù)QQ：980227448，傳真：027-87680708-608，聯(lián)系人：雷青；歡迎新老客戶咨詢購(gòu)買！

電液比例閥是比例控制系統(tǒng)中的主要功率放大元件,按輸入電信號(hào)指令連續(xù)地成比例地控制液壓系統(tǒng)的壓辦流量等參數(shù)。與伺服控制系統(tǒng)中的伺服閥相比,在某些方面還有一定的性能差距(主要性能比較如表1所示),但它顯著的優(yōu)點(diǎn)是抗污染能力強(qiáng),大大地減少了由污染而造成的工作故障,提高了液壓系統(tǒng)的工作穩(wěn)定性和可靠性。另一方面比例閥的成本比伺服閥低，結(jié)構(gòu)也簡(jiǎn)單,已在許多場(chǎng)合獲得廣泛應(yīng)用。

比例閥按功能分為三大類

(1)比例壓力閥。有溢流閥減壓閥,分別有直動(dòng)和先導(dǎo)兩種結(jié)構(gòu);可連續(xù)地或按比例地遠(yuǎn)程控制其輸出油液壓力;

(2)比例換向閥。有直動(dòng)和先導(dǎo)兩種結(jié)構(gòu),直動(dòng)閥有帶位移傳感器和不帶位移傳感器兩類。由于使用了比例電磁鐵閥芯不僅可以換位，而且換位的行程可以連續(xù)地或按比例地變化。因而連通油口間的通流面積也可以連續(xù)或按比例地變化。所以比例換向閥不僅能夠控制執(zhí)行元件的方向而且能夠控制其速度。因?yàn)檫@個(gè)原因比例閥中的比例換向閥應(yīng)用也普遍;

(3)比例流量閥。有比例調(diào)速閥和比例溢流流量控制閥,可連續(xù)地或按比例地遠(yuǎn)程控制其輸出流量。

比例閥的輸入單元是電-機(jī)械轉(zhuǎn)換器,它將輸入的電信號(hào)轉(zhuǎn)換成機(jī)械量轉(zhuǎn)換器有伺服電機(jī)和步進(jìn)電機(jī)力馬達(dá)和力矩馬達(dá)比例電磁鐵等形式。但常用的比例閥大都采用了比例電磁鐵，比例電磁鐵根據(jù)電磁原理設(shè)計(jì),能使其產(chǎn)生的機(jī)械量(力或力矩和位移)與輸入電信號(hào)(電流)的大小成比例,再連續(xù)地控制液壓閥閥芯的位置，進(jìn)而實(shí)現(xiàn)連續(xù)地控制液壓系統(tǒng)的壓力方向和流量。比例電磁鐵的結(jié)構(gòu)，它由線圈、銜鐵推桿等組成,當(dāng)有信號(hào)輸入線圈時(shí),線圈內(nèi)磁場(chǎng)對(duì)銜鐵產(chǎn)生作用力,銜鐵在磁場(chǎng)中按信號(hào)電流的大小和方向成比例連續(xù)地運(yùn)動(dòng),再通過(guò)固連在一起的銷釘帶動(dòng)推桿運(yùn)動(dòng),從而控制滑閥閥芯的運(yùn)動(dòng)。應(yīng)用的比例電磁鐵是耐高壓直流比例電磁鐵。

比例電磁鐵的類型按照工作原理主要分為

如下幾類:

(1)力控制型

這類電磁鐵的行程短，只有1 5mm,輸出力與輸入電流成正比,常用在比例閥的先導(dǎo)控制級(jí)

上:

(2)行程控制型

由力控制型加負(fù)載彈簧共同組成，電磁鐵輸出的力通過(guò)彈簧轉(zhuǎn)換成輸出位移,輸出位移與輸入電流成正比，工作行程達(dá)3mm,線性好，可以用在直控式比例閥上;

(3)位置調(diào)節(jié)型

銜鐵的位置由傳感器檢測(cè)后,發(fā)出一個(gè)閥內(nèi)反饋信號(hào),在閥內(nèi)進(jìn)行比較后重新調(diào)節(jié)銜鐵的位置。閥內(nèi)形成閉環(huán)控制,精度高,銜鐵的位置與力

無(wú)關(guān)，精度高的比例閥如德國(guó)的博世意大利的阿托斯等都采用這種結(jié)構(gòu)。

比例閥與放大器配套使用放大器采用電流負(fù)反饋,設(shè)置斜坡信號(hào)發(fā)生器階躍函數(shù)發(fā)生器、PD調(diào)節(jié)器反向器等,控制升壓降壓時(shí)間或運(yùn)動(dòng)加速度及減速度。斷電時(shí), 能使閥芯處于安全位置。

比例電磁鐵和液壓閥組成電液比例閥。由于比例電磁鐵可以在不同的電流下得到不同的力(或行程),因此可以無(wú)級(jí)改變壓力、流量。故比例電磁鐵是比例閥的關(guān)鍵元件。

REXROTH比例溢流閥0811402019

力士樂(lè)REXROTH比例壓力控制閥

力士樂(lè)REXROTH比例溢流閥

力士樂(lè)REXROTH比例溢流閥，直動(dòng)式

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力士樂(lè)REXROTH比例減壓閥，直接操作

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力士樂(lè)REXROTH減壓閥，直接操作，直流電動(dòng)機(jī)操作DBGT

R901358101 DBGT-2X/700VP2

力士樂(lè)REXROTH比例溢流閥，直接操作，上升特性曲線KBPS.8A

R901131559 KBPSB8AA/HCG24K40V-8

R901143246 KBPSB8AA/HCG24K4V

R901066847 KBPSC8AA/HCG12C4V

R901068773 KBPSC8AA/HCG12K40V

R901066358 KBPSC8AA/HCG12K4V

R901088102 KBPSC8AA/HCG24C4V

R901049804 KBPSC8AA/HCG24K4V

R901192299 KBPSC8AA/HCG24K4V-8

R901075092 KBPSF8AA/HCG12K4V

R901369146 KBPSF8AA/HCG24C4V

R901405052 KBPSF8AA/HCG24K40V

R901049817 KBPSF8AA/HCG24K4V

R901192301 KBPSF8AA/HCG24K4V-8

R901092244 KBPSH8AA/HCG12K4V

R901170842 KBPSH8AA/HCG24C4V

R901171171 KBPSH8AA/HCG24C4V-8

R901047003 KBPSH8AA/HCG24K40V

R901049868 KBPSH8AA/HCG24K4V

R901321897 KBPSL8AA/HCG12C4V

R901321903 KBPSL8AA/HCG12K40V

R901260259 KBPSL8AA/HCG12K4V

R901027410 KBPSL8AA/HCG24C4V

R901207215 KBPSL8AA/HCG24C4V-8

R901064393 KBPSL8AA/HCG24K40V

R901027408 KBPSL8AA/HCG24K4V

R901053398 KBPSL8AA/HCG24K4V-8

R901071080 KBPSN8AA/HCG12C4V

R901068772 KBPSN8AA/HCG12K40V

R901149527 KBPSN8AA/HCG12K4V

R901208991 KBPSN8AA/HCG24C4V-8

R901415515 KBPSN8AA/HCG24K40V

R901049877 KBPSN8AA/HCG24K4V

R901048791 KBPSP8AA/HCG12C4V

R901175377 KBPSP8AA/HCG12K40V

R901069317 KBPSP8AA/HCG12K4V

R901069687 KBPSP8AA/HCG24C4V

R901132980 KBPSP8AA/HCG24C4V-8

R901064392 KBPSP8AA/HCG24K40V

R901353142 KBPSP8AA/HCG24K40V-8

R901047007 KBPSP8AA/HCG24K4V

R901053647 KBPSP8AA/HCG24K4V-8

R901286040 KBPSR8AA/HCG12C4V

R901321893 KBPSR8AA/HCG12K40V

R901365431 KBPSR8AA/HCG12K4V

R901073298 KBPSR8AA/HCG24C4V

R901128882 KBPSR8AA/HCG24C4V-8

R901047001 KBPSR8AA/HCG24K40V

R901249051 KBPSR8AA/HCG24K40V-31

R901188580 KBPSR8AA/HCG24K40V-8

R901049860 KBPSR8AA/HCG24K4V

R901250673 KBPSR8AA/HCG24K4V-31

R901192304 KBPSR8AA/HCG24K4V-8

R901367996 KBPST8AA/HCG12K40V

R901197639 KBPST8AA/HCG12K4V

R901045871 KBPST8AA/HCG24K40V

R901127550 KBPST8AA/HCG24K40V-8

R901049865 KBPST8AA/HCG24K4V

R901105195 KBPST8AA/HCG24K4V-8

力士樂(lè)REXROTH比例溢流閥，直接操作，遞減特性曲線KBPS.8B

R901268443 KBPSB8BA/HCG12K40V

R901144800 KBPSB8BA/HCG24C4V-8

R901131538 KBPSB8BA/HCG24K40V-8

R901283227 KBPSB8BA/HCG24K4V

R901064003 KBPSC8BA/HCG12C4V

R901066477 KBPSC8BA/HCG12K4V

R901145245 KBPSC8BA/HCG24K40V

R901018586 KBPSC8BA/HCG24K4V

R901269378 KBPSC8BA/HCG24K4V-2

R901192443 KBPSF8BA/HCG12K4V

R901209587 KBPSF8BA/HCG24K40V

R901018587 KBPSF8BA/HCG24K4V

R901426298 KBPSF8BA/HCG24K4V-2

R901336926 KBPSH8BA/HCG12K40V

R901154420 KBPSH8BA/HCG24C4V

R901210101 KBPSH8BA/HCG24K40V

R901049691 KBPSH8BA/HCG24K4V

R901441125 KBPSH8BA/HCG24K4V-2

R901262868 KBPSL8BA/HCG12C4-185V

R901056361 KBPSL8BA/HCG12C4V

R901064385 KBPSL8BA/HCG12K40V

R901276352 KBPSL8BA/HCG12K40V-2

R901049738 KBPSL8BA/HCG12K4V

R901018602 KBPSL8BA/HCG24C4V

R901120007 KBPSL8BA/HCG24C4V-8

R901253787 KBPSL8BA/HCG24K4-190V

R901255965 KBPSL8BA/HCG24K40-190V

R901064382 KBPSL8BA/HCG24K40V

R901284948 KBPSL8BA/HCG24K40V-2

R901112038 KBPSL8BA/HCG24K40V-8

R901018588 KBPSL8BA/HCG24K4V

R901137190 KBPSN8BA/HCG12K40V

R901036375 KBPSN8BA/HCG24C4-210V

R901002380 KBPSN8BA/HCG24C4V

R901016229 KBPSN8BA/HCG24K40V

R901353133 KBPSN8BA/HCG24K40V-8

R901018592 KBPSN8BA/HCG24K4V

R901431700 KBPSN8BA/HCG24K4V-8

R901146829 KBPSP8BA/HCG12K40V

R901018605 KBPSP8BA/HCG24C4V

R901026207 KBPSP8BA/HCG24K40V

R901355865 KBPSP8BA/HCG24K40V-8

R901018593 KBPSP8BA/HCG24K4V

R901431701 KBPSP8BA/HCG24K4V-8

R901321905 KBPSR8BA/HCG12C4V

R901190246 KBPSR8BA/HCG12K40V

R901075990 KBPSR8BA/HCG12K4V

R901018607 KBPSR8BA/HCG24C4V

R901202737 KBPSR8BA/HCG24C4V-8

R901188705 KBPSR8BA/HCG24K40V

R901249049 KBPSR8BA/HCG24K40V-31

R901103743 KBPSR8BA/HCG24K40V-8

R901018597 KBPSR8BA/HCG24K4V

R901337169 KBPSR8BA/HCG24K4V-2

R901250672 KBPSR8BA/HCG24K4V-31

R901360878 KBPSR8BA/HCG24K4V-36

R901434771 KBPSR8BA/HCG24K4V-8

R901077843 KBPST8BA/HCG12K40V

R901394019 KBPST8BA/HCG12K4V

R901109489 KBPST8BA/HCG24C4V

R901428585 KBPST8BA/HCG24C4V-8

R901007426 KBPST8BA/HCG24K40V

R901102639 KBPST8BA/HCG24K40V-8

R901018598 KBPST8BA/HCG24K4V

R901104200 KBPST8BA/HCG24K4V-8

力士樂(lè)REXROTH比例溢流閥，先導(dǎo)式

力士樂(lè)REXROTH比例溢流閥，先導(dǎo)式、帶集成電子放大版（OBE）和位置反饋DBEBE6X

R901334959 DBEBE6X-1X/180G24K0F1M-12

0811402077 DBEBE6X-1X/180G24K31A1M

0811402130 DBEBE6X-1X/180G24K31A1V

0811402079 DBEBE6X-1X/180G24K31F1M

R901238507 DBEBE6X-1X/315G24K0F1M-12

0811402076 DBEBE6X-1X/315G24K31A1M

R901126712 DBEBE6X-1X/315G24K31F1M

0811402078 DBEBE6X-1X/80G24K31A1M

0811402084 DBEBE6X-1X/80G24K31F1M

力士樂(lè)REXROTH比例壓力溢流閥，直動(dòng)式、帶集成電子放大版（OBE）和位置反饋DBEBE10Z

0811402115 DBEBE10Z-1X/180XYG24K31A1M

R901308592 DBEBE10Z-1X/180XYG24K31F1M

0811402116 DBEBE10Z-1X/315XYG24K31A1M

R901373218 DBEBE10Z-1X/315XYG24K31F1M

力士樂(lè)REXROTH比例減壓閥，先導(dǎo)式(Z)DBE 6, (Z)DBEE 6

R901304331 DBE6-2X/100G24K4M

R901417852 DBE6-2X/100G24K4V

R901304333 DBE6-2X/100YG24K4M

R901304383 DBE6-2X/200G24K4M

R901390101 DBE6-2X/200G24K4V

R901304384 DBE6-2X/200YG24K4M

R901304322 DBE6-2X/25G24K4M

R901401619 DBE6-2X/25G24K4V

R901304396 DBE6-2X/315G24K4M

R901324825 DBE6-2X/315G24K4V

R901335210 DBE6-2X/315G24K4V-667

R901304402 DBE6-2X/315YG24K4M

R901346344 DBE6-2X/315YG24K4V

R901304433 DBE6-2X/350G24K4M

R901447274 DBE6-2X/350G24K4V

R901304443 DBE6-2X/350YG24K4M

R901429010 DBE6-2X/350YG24K4V

R901304326 DBE6-2X/50G24K4M

R901358691 DBE6-2X/50G24K4V

R901304329 DBE6-2X/50YG24K4M

R901441162 DBE6-2X/50YG24K4V

R901322751 DBE6-2X=50G24K4M-320

R901317466 DBEE6-2X/100G24K31A1M

R901389850 DBEE6-2X/100G24K31A1V

R901374908 DBEE6-2X/100G24K31F1M

R901340832 DBEE6-2X/100YG24K31A1M

R901415985 DBEE6-2X/100YG24K31A1V

R901362531 DBEE6-2X/100YG24K31F1M

R901324603 DBEE6-2X/200G24K31A1M

R901375094 DBEE6-2X/200G24K31A1V

R901350548 DBEE6-2X/200G24K31F1M

R901431790 DBEE6-2X/200G24K31F1V

R901337464 DBEE6-2X/200YG24K31A1M

R901410497 DBEE6-2X/200YG24K31F1M

R901255355 DBEE6-2X/25G24K31A1M

R901342296 DBEE6-2X/25G24K31A1V

R901323940 DBEE6-2X/315G24K31A1M

R901345967 DBEE6-2X/315G24K31A1V

R901368833 DBEE6-2X/315G24K31F1M

R901335147 DBEE6-2X/315YG24K31A1M

R901433168 DBEE6-2X/315YG24K31A1V

R901408278 DBEE6-2X/315YG24K31F1M

R901322928 DBEE6-2X/350YG24K31A1M

R901348117 DBEE6-2X/350YG24K31F1M

R901329457 DBEE6-2X/50G24K31A1M

R901439889 DBEE6-2X/50G24K31A1V

R901384016 DBEE6-2X/50G24K31F1M

R901327852 DBEE6-2X/50YG24K31A1M

R901385073 DBEE6-2X/50YG24K31F1M

R901304380 ZDBE6VP2-2X/100G24K4M

R901304389 ZDBE6VP2-2X/200G24K4M

R901304408 ZDBE6VP2-2X/315G24K4M

R901304451 ZDBE6VP2-2X/350G24K4M

R901382814 ZDBE6VP2-2X/350G24K4V

R901304330 ZDBE6VP2-2X/50G24K4M

R901317464 ZDBEE6VP2-2X/100G24K31A1M

R901410073 ZDBEE6VP2-2X/100G24K31F1M

R901336824 ZDBEE6VP2-2X/200G24K31A1M

R901330783 ZDBEE6VP2-2X/200G24K31A1V

R901392659 ZDBEE6VP2-2X/200G24K31F1M

R901430641 ZDBEE6VP2-2X/25G24K31A1M

R901335463 ZDBEE6VP2-2X/315G24K31A1M

R901344018 ZDBEE6VP2-2X/350G24K31A1M

R901356984 ZDBEE6VP2-2X/350G24K31F1M

R901340988 ZDBEE6VP2-2X/50G24K31A1M

R901317464 ZDBEE6VP2-21/100G24K31A1M

R901410073 ZDBEE6VP2-21/100G24K31F1M

R901336824 ZDBEE6VP2-21/200G24K31A1M

R901330783 ZDBEE6VP2-21/200G24K31A1V

R901392659 ZDBEE6VP2-21/200G24K31F1M

R901430641 ZDBEE6VP2-21/25G24K31A1M

R901335463 ZDBEE6VP2-21/315G24K31A1M

R901344018 ZDBEE6VP2-21/350G24K31A1M

R901356984 ZDBEE6VP2-21/350G24K31F1M

R901340988 ZDBEE6VP2-21/50G24K31A1M

力士樂(lè)REXROTH比例減壓閥，先導(dǎo)操作DBEM

R901403915 DBEM10-7X/100XYG24-8K4M

R901402719 DBEM10-7X/100XYG24K4M

R901353020 DBEM10-7X/100YG24-8K4M

R901377849 DBEM10-7X/100YG24-8K4V

R901335402 DBEM10-7X/100YG24K4M

R901363271 DBEM10-7X/100YG24K4V

R901405480 DBEM10-7X/200XYG24-8K4M

R901376030 DBEM10-7X/200XYG24-8K4V

R901371562 DBEM10-7X/200XYG24K4M

R901353023 DBEM10-7X/200YG24-8K4M

R901376031 DBEM10-7X/200YG24-8K4V

R901335400 DBEM10-7X/200YG24K4M

R901353024 DBEM10-7X/200YG24K4V

R901353026 DBEM10-7X/315XYG24-8K4M

R901358168 DBEM10-7X/315XYG24K4M

R901358170 DBEM10-7X/315XYG24K4V

R901358171 DBEM10-7X/315YG24-8K4M

R901385233 DBEM10-7X/315YG24-8K4V

R901335399 DBEM10-7X/315YG24K4M

R901363273 DBEM10-7X/315YG24K4V

R901394446 DBEM10-7X/350XYG24-8K4M

R901358179 DBEM10-7X/350XYG24K4M

R901378829 DBEM10-7X/350XYG24K4M-5

R901335397 DBEM10-7X/350YG24K4M

R901363276 DBEM10-7X/350YG24K4V

R901367037 DBEM10-7X/50XYG24-8K4M

R901403695 DBEM10-7X/50XYG24-8K4V

R901380481 DBEM10-7X/50XYG24K4M

R901392491 DBEM10-7X/50XYG24K4V

R901358180 DBEM10-7X/50YG24-8K4M

R901442119 DBEM10-7X/50YG24-8K4V

R901335405 DBEM10-7X/50YG24K4M

R901363277 DBEM10-7X/50YG24K4V

R901353027 DBEM20-7X/100YG24-8K4M

R901353029 DBEM20-7X/100YG24K4M

R901363279 DBEM20-7X/100YG24K4V

R901353030 DBEM20-7X/200XYG24-8K4M

R901353031 DBEM20-7X/200XYG24K4M

R901353033 DBEM20-7X/200YG24-8K4M

R901378828 DBEM20-7X/200YG24-8K4M-340

R901353036 DBEM20-7X/200YG24K4M

R901363280 DBEM20-7X/200YG24K4V

R901366458 DBEM20-7X/315XYG24-8K4M

R901412035 DBEM20-7X/315XYG24-8K4M-5

R901353039 DBEM20-7X/315XYG24K4M

R901430308 DBEM20-7X/315XYG24K4V

R901353040 DBEM20-7X/315YG24-8K4M

R901368025 DBEM20-7X/315YG24-8K4V

R901353042 DBEM20-7X/315YG24K4M

R901344450 DBEM20-7X/315YG24K4V

R901165409 DBEM20-7X/350XYG24-8K4M

R901353045 DBEM20-7X/350XYG24K4M

R901353046 DBEM20-7X/350YG24-8K4M

R901353054 DBEM20-7X/350YG24K4M

R901363282 DBEM20-7X/350YG24K4V

R901431279 DBEM20-7X/50XYG24K4M

R901375372 DBEM20-7X/50YG24K4M

R901391242 DBEM20-7X/50YG24K4V

R901393457 DBEM20-7X=200XYG24-8K4M

R901402441 DBEM20G-7X/200YG24K4V

R901420596 DBEM20G-7X/50YG24K4V

R901335389 DBEM30-7X/100YG24-8K4V

R901360702 DBEM30-7X/100YG24K4M

R901363284 DBEM30-7X/100YG24K4V

R901375541 DBEM30-7X/200XYG24-8K4M

R901395247 DBEM30-7X/200XYG24-8K4V

R901353055 DBEM30-7X/200XYG24K4M

R901392118 DBEM30-7X/200XYG24K4V

R901371208 DBEM30-7X/200YG24-8K4M

R901442063 DBEM30-7X/200YG24-8K4V

R901353056 DBEM30-7X/200YG24K4M

R901363285 DBEM30-7X/200YG24K4V

R901357147 DBEM30-7X/315XYG24-8K4M

R901353057 DBEM30-7X/315XYG24K4M

R901370633 DBEM30-7X/315YG24-8K4M

R901353059 DBEM30-7X/315YG24K4M

R901344449 DBEM30-7X/315YG24K4V

R901376970 DBEM30-7X/350XYG24-8K4M

R901446919 DBEM30-7X/350XYG24K4M

R901433299 DBEM30-7X/350YG24-8K4M

R901353060 DBEM30-7X/350YG24K4M

R901177876 DBEM30-7X/50YG24K4M

R901386314 DBEM30G-7X/315YG24-8K4V

R901407692 DBEM30G-7X/350YG24-8K4V

力士樂(lè)REXROTH比例溢流閥，先導(dǎo)式、帶集成電子放大版（OBE）DBEME

R901401881 DBEME10-7X/100XYG24K31A1M

R901358181 DBEME10-7X/100YG24K31A1M

R901363286 DBEME10-7X/100YG24K31A1V

R901445550 DBEME10-7X/100YG24K31F1M

R901375464 DBEME10-7X/200XYG24K31A1M

R901353062 DBEME10-7X/200YG24K31A1M

R901363307 DBEME10-7X/200YG24K31A1V

R901386840 DBEME10-7X/200YG24K31F1V

R901353063 DBEME10-7X/315XYG24K31A1M

R901409594 DBEME10-7X/315XYG24K31F1V

R901344448 DBEME10-7X/315YG24K31A1M

R901363308 DBEME10-7X/315YG24K31A1V

R901401760 DBEME10-7X/315YG24K31F1M

R901371975 DBEME10-7X/350XYG24K31A1M

R901358182 DBEME10-7X/350YG24K31A1M

R901356058 DBEME10-7X/350YG24K31A1V

R901374804 DBEME10-7X/350YG24K31F1M

R901384767 DBEME10-7X/50XYG24K31A1M

R901443880 DBEME10-7X/50XYG24K31F1V

R901353061 DBEME10-7X/50YG24K31A1M

R901363310 DBEME10-7X/50YG24K31A1V

R901396002 DBEME10-7X=315YG24K31A1M

R901362243 DBEME10G-7X/315YG24K31A1V

R901429967 DBEME10G-7X/350YG24K31A1V

R901404380 DBEME20-7X/100XYG24K31F1M

R901353064 DBEME20-7X/100YG24K31A1M

R901335395 DBEME20-7X/100YG24K31A1V

R901398799 DBEME20-7X/100YG24K31F1V

R901378240 DBEME20-7X/200XYG24K31A1M

R901353065 DBEME20-7X/200YG24K31A1M

R901335394 DBEME20-7X/200YG24K31A1V

R901396821 DBEME20-7X/200YG24K31F1M

R901443291 DBEME20-7X/200YG24K31F1V

R901353067 DBEME20-7X/315XYG24K31A1M

R901409593 DBEME20-7X/315XYG24K31F1V

R901353070 DBEME20-7X/315YG24K31A1M

R901335393 DBEME20-7X/315YG24K31A1V

R901429620 DBEME20-7X/315YG24K31F1M

R901394946 DBEME20-7X/350XYG24K31A1M

R901353074 DBEME20-7X/350YG24K31A1M

R901335391 DBEME20-7X/350YG24K31A1V

R901363767 DBEME20-7X/350YG24K31F1M

R901335396 DBEME20-7X/50YG24K31A1V

R901353084 DBEME20-7X=100YG24K31A1M=PL

R901362249 DBEME20G-7X/315YG24K31A1V

R901438738 DBEME20G-7X/50YG24K31F1M

R901387448 DBEME30-7X/100YG24K31A1M

R901429617 DBEME30-7X/100YG24K31F1M

R901353075 DBEME30-7X/200YG24K31A1M

R901363311 DBEME30-7X/200YG24K31A1V

R901413479 DBEME30-7X/200YG24K31F1V

R901413292 DBEME30-7X/315XYG24K31A1M

R901353077 DBEME30-7X/315YG24K31A1M

R901363314 DBEME30-7X/315YG24K31A1V

R901429619 DBEME30-7X/315YG24K31F1M

R901335387 DBEME30-7X/315YG24K31F1V

R901353079 DBEME30-7X/350YG24K31A1M

R901440102 DBEME30-7X/350YG24K31A1V

R901369534 DBEME30-7X/350YG24K31F1M

R901362250 DBEME30G-7X/315YG24K31A1V

電液比例閥是采用了比例控制技術(shù),介于開關(guān)型液壓閥和電液伺服閥之間的-種液壓元件,在工業(yè)生產(chǎn)中獲得了廣泛的應(yīng)用,輸入的電信號(hào)有模擬式和數(shù)字式兩大類,可以用于控制位置(轉(zhuǎn)角)、速度(轉(zhuǎn)速)、加速度(角加速度)、壓力(壓差)、力(力矩)等參數(shù)。電液比例閥等元件可以組成如下三類控制回路和系統(tǒng)

(1)電液比例壓力控制回路和系統(tǒng)。例如:用于帶鋼熱連軋機(jī)卷取機(jī)液壓輔助系統(tǒng)的電液比例壓力控制回路,用于板帶軋機(jī)輥縫控制的液壓推上系統(tǒng)電液比例壓力控制回路,用于帶材卷取設(shè)備恒張力的閉環(huán)電液比例壓力控制回路;

(2)電液比例流量控制回路和系統(tǒng)。例如:用于帶鋼熱連軋機(jī)精軋機(jī)平衡液壓系統(tǒng)的電液比例壓力控制回路,用于機(jī)床微進(jìn)給的電液比例控制回路,用于旋壓機(jī)折板機(jī)同步的電液比例控制回路,用于電梯的電液比例控制回路;

(3)電液比例多參數(shù)控制回路和系統(tǒng)。例如:用于帶鋼熱連軋機(jī)精軋換輥液壓系統(tǒng)的電液比例壓力控制回路,用于液壓缸垂直配置而采用wI型閥芯的比例控制回路,用于熱軋鋼卷步進(jìn)鏈?zhǔn)竭\(yùn)輸機(jī)的速度、加減速度控制回路。

電液比例閥是閥內(nèi)比例電磁鐵輸入電壓信號(hào)產(chǎn)生相應(yīng)動(dòng)作，使工作閥閥芯產(chǎn)生位移，閥口尺寸發(fā)生改變并以此完成與輸入電壓成比例壓力、流量輸出元件。閥芯位移也可以以機(jī)械、液壓或電形式進(jìn)行反饋。電液比例閥具有形式種類多樣、容易組成使用電氣及計(jì)算機(jī)控制各種電液系統(tǒng)、控制精度高、安裝使用靈活以及抗污染能力強(qiáng)等多方面優(yōu)點(diǎn)，應(yīng)用領(lǐng)域日益拓寬。近年研發(fā)生產(chǎn)插裝式比例閥和比例多路閥充分考慮到工程機(jī)械使用特點(diǎn)，具有先導(dǎo)控制、負(fù)載傳感和壓力補(bǔ)償?shù)裙δ?。它出現(xiàn)對(duì)移動(dòng)式液壓機(jī)械整體技術(shù)水平提升具有重要意義。特別是電控先導(dǎo)操作、無(wú)線遙控和有線遙控操作等方面展現(xiàn)了其良好應(yīng)用前景。

電液比例閥種類和形式

電液比例閥包括比例流量閥、比例壓力閥、比例換向閥。工程機(jī)械液壓操作特點(diǎn)，以結(jié)構(gòu)形式劃分電液比例閥主要有兩類:一類是螺旋插裝式比例閥，另一類是滑閥式比例閥。

滑閥式比例閥又稱分配閥，是移動(dòng)式機(jī)械液壓系統(tǒng)基本元件之一，是能實(shí)現(xiàn)方向與流量調(diào)節(jié)復(fù)合閥。電液滑閥式比例多路閥是比較理想電液轉(zhuǎn)換控制元件，它保留了手動(dòng)多路閥基本功能，還增加了位置電反饋比例伺服操作和負(fù)載傳感等先進(jìn)控制手段。它是工程機(jī)械分配閥更新?lián)Q代產(chǎn)品。

出于制造成本考慮和工程機(jī)械控制精度要求不高特點(diǎn)，--般比例多路閥內(nèi)不配置位移感應(yīng)傳感器，具有電子檢測(cè)和糾錯(cuò)功能。，閥芯位移量容易受負(fù)載變化引起壓力波動(dòng)影響，操作過(guò)程中要靠視覺觀察來(lái)保證作業(yè)完成。電控、遙控操作時(shí)更應(yīng)注意外界千涉影響。近來(lái)，電子技術(shù)發(fā)展，人們?cè)絹?lái)越多采用內(nèi)裝差動(dòng)變壓器(LDVT)等位移傳感器構(gòu)成閥芯位置移動(dòng)檢測(cè)，實(shí)現(xiàn)閥芯位移閉環(huán)控制。這種由電磁比例閥、位置反饋傳感器、驅(qū)動(dòng)放大器和其它電子電路組成高度集成比例閥，具有一定校正功能，可以有效克服一.般比例閥缺點(diǎn)，使控制精度到較大提高。

電液比例多路閥負(fù)載傳感與壓力補(bǔ)償技術(shù)

節(jié)約能量、降低油溫和提高控制精度，同時(shí)也使同步動(dòng)作幾個(gè)執(zhí)行元件運(yùn)動(dòng)時(shí)互不干擾，現(xiàn)較先進(jìn)工程機(jī)械都采用了負(fù)載傳感與壓力補(bǔ)償技術(shù)。負(fù)載傳感與壓力補(bǔ)償是一一個(gè)很相似概念,都是利用負(fù)載變化引起壓力變化去調(diào)節(jié)泵或閥壓力與流量以適應(yīng)系統(tǒng)工作需求。負(fù)載傳感對(duì)定量泵系統(tǒng)來(lái)講是將負(fù)載壓力負(fù)載感應(yīng)油路引至遠(yuǎn)程調(diào)壓溢流閥上，當(dāng)負(fù)載較小時(shí)，溢流閥調(diào)定壓力也較小;負(fù)載較大，調(diào)定壓力也較大，但也始終存一定溢流損失。變量泵系統(tǒng)是將負(fù)載傳感油路引入到泵變量機(jī)構(gòu)，使泵輸出壓力隨負(fù)載壓力升高而升高(始終為較小固定壓差)，使泵輸出流量與系統(tǒng)實(shí)際需要流量相等，無(wú)溢流損失，實(shí)現(xiàn)了節(jié)能。壓力補(bǔ)償是提高閥控制性能而采取一種保證措施。將閥口后負(fù)載壓力引入壓力補(bǔ)償閥，壓力補(bǔ)償閥對(duì)閥口前壓力進(jìn)行調(diào)整使閥口前后壓差為常值，這樣節(jié)流口流量調(diào)節(jié)特性流經(jīng)閥口流量大小就只與該閥口開度有關(guān)，而不受負(fù)載壓力影響。

工程機(jī)械電液比例閥先導(dǎo)控制與遙控

電液比例閥和其它專用器件技術(shù)進(jìn)步使工程車輛擋位、轉(zhuǎn)向、制動(dòng)和工作裝置等各種系統(tǒng)電氣控制成為現(xiàn)實(shí)。一般需要位移輸出機(jī)構(gòu)可采用比例伺服控制手動(dòng)多路閥驅(qū)動(dòng)器完成。電氣操作具有響應(yīng)快、布線靈活、可實(shí)現(xiàn)集成控制和與計(jì)算機(jī)接口容易等優(yōu)點(diǎn),現(xiàn)代工程機(jī)械液壓閥已越來(lái)越多采用電控先導(dǎo)控制電液比例閥(或電液開關(guān)閥)代替手動(dòng)直接操作或液壓先導(dǎo)控制多路閥。采用電液比例閥(或電液開關(guān)閥)另一個(gè)顯著優(yōu)點(diǎn)是工程車輛上可以大大減少操作手柄個(gè)數(shù)，這使駕駛室布置簡(jiǎn)潔，能夠有效降低操作復(fù)雜性，對(duì)提高作業(yè)質(zhì)量和效率都具有重要實(shí)際意義。

電液比例閥工程機(jī)械上應(yīng)用實(shí)例

汽車起重機(jī)液壓系統(tǒng)。該機(jī)采用了3片型比例多路閥，負(fù)載傳感油路中3個(gè)梭閥將3個(gè)工作負(fù)載中大壓力選出來(lái)送至遠(yuǎn)程調(diào)壓溢流閥遠(yuǎn)控口，調(diào)整溢流閥溢流壓力，使液壓泵輸出壓力恰好符合系統(tǒng)負(fù)載需要即可，達(dá)到一定節(jié)能目。壓力補(bǔ)償油路使每一片閥流量?jī)H與該閥開度有關(guān)，而所承受負(fù)載無(wú)關(guān)，它閥片所承受負(fù)載也沒(méi)有關(guān)系，達(dá)到任一負(fù)載下均可隨意控制負(fù)載速度目。

推土機(jī)推土鏟手動(dòng)與電液比例先導(dǎo)控制實(shí)例。當(dāng)二位三通電磁閥不通電時(shí)，先導(dǎo)壓力與手動(dòng)減壓式先導(dǎo)閥相通，梭閥選擇來(lái)自手動(dòng)先導(dǎo)閥壓力對(duì)液動(dòng)換向閥進(jìn)行控制;當(dāng)二位三通電磁閥通電時(shí)，先導(dǎo)控制壓力油通向三通比例減壓式先導(dǎo)閥，梭閥對(duì)液動(dòng)換向閥進(jìn)行控制。