力士樂(lè)高響應(yīng)比例閥4WRPEH6C3B12L-20/G24K0/A1M 0811404601，德國(guó)REXROTH高響應(yīng)比例閥，購(gòu)買(mǎi)進(jìn)口液壓、氣動(dòng)、自動(dòng)化控制工業(yè)配件，認(rèn)準(zhǔn)“上海韋米機(jī)電設(shè)備有限公司”，7年老店，保證產(chǎn)品原廠原裝，價(jià)格優(yōu)惠，售后無(wú)憂(yōu)，歡迎新老客戶(hù)咨詢(xún)采購(gòu)！
 

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(lèi)
(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(lèi)。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(xiāo)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(lèi)型按照工作原理主要分為
如下幾類(lèi):
(1)力控制型
這類(lèi)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。

(1)比例環(huán)節(jié)
比例環(huán)節(jié)也稱(chēng)為無(wú)慣性環(huán)節(jié),對(duì)液壓缸或馬達(dá)，忽略液壓油的可壓縮性和泄漏,液壓缸的流量Q= VA。其中V為活塞速度;A為活塞面積。其傳遞函數(shù)為: g(s)= V (s)/Q(s)= 1/A =式中K為比例環(huán)節(jié)放大系數(shù)或增益,表示輸入量經(jīng)過(guò)放大K倍后輸出。
(2)比例控制系統(tǒng)
比例控制系統(tǒng)根據(jù)有無(wú)反饋分為開(kāi)環(huán)控制和閉環(huán)控制。如比例閥控制液壓缸或馬達(dá)系統(tǒng)可以實(shí)現(xiàn)速度位移轉(zhuǎn)速和轉(zhuǎn)矩等的控制。
由于開(kāi)環(huán)控制系統(tǒng)的精度比較低,無(wú)級(jí)調(diào)節(jié)系統(tǒng)輸入量就可以無(wú)級(jí)調(diào)節(jié)系統(tǒng)輸出量力速度以及加減速度等。這種控制系統(tǒng)的結(jié)構(gòu)組成簡(jiǎn)單,系統(tǒng)的輸出端和輸入端不存在反饋回路,系統(tǒng)輸出量對(duì)系統(tǒng)輸入控制作用沒(méi)有影響,沒(méi)有自動(dòng)糾正偏差的能力,其控制精度主要取決于關(guān)鍵元器件的特性和系統(tǒng)調(diào)整精度，所以只能應(yīng)用在精度要求不高并且不存在內(nèi)外干擾的場(chǎng)合。開(kāi)環(huán)控制系統(tǒng)一.般不存在所謂穩(wěn)定性問(wèn)題。
閉環(huán)控制系統(tǒng)(即反饋控制系統(tǒng))的優(yōu)點(diǎn)是對(duì)內(nèi)部和外部干擾不敏感，系統(tǒng)工作原理是反饋控制原理或按偏差調(diào)整原理。這種控制系統(tǒng)有通
過(guò)負(fù)反饋控制自動(dòng)糾正偏差的能力。但反饋帶來(lái)了系統(tǒng)的穩(wěn)定性問(wèn)題，只要系統(tǒng)穩(wěn)定，閉環(huán)控制系統(tǒng)可以保持較高的精度。因此, 目前普遍采用閉環(huán)控制系統(tǒng)。
力士樂(lè)高響應(yīng)比例閥4WRPEH6C3B12L-20/G24K0/A1M 0811404601
力士樂(lè)REXROTH高響應(yīng)方向閥，直動(dòng)式、帶電氣位置反饋和集成電子放大版（OBE）4WRPEH 6 -2X
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0811404612 4WRPEH6C4B24L-2X/G24K0/A1M
0811404636 4WRPEH6C4B24L-2X/G24K0/B5M
0811404352 4WRPEH6C4B24L-2X/G24K0/F1M
R901273569 4WRPEH6C4B24L-2X/G24K0/F1V
0811404646 4WRPEH6C4B25P-2X/G24K0/A1M
R901318493 4WRPEH6C4B25P-2X/G24K0/F1M
0811404613 4WRPEH6C4B40L-2X/G24K0/A1M
0811404638 4WRPEH6C4B40L-2X/G24K0/A1V
0811404364 4WRPEH6C4B40L-2X/G24K0/B5M
0811404353 4WRPEH6C4B40L-2X/G24K0/F1M
R901136861 4WRPEH6C4B40L-2X/G24K0/F1V
0811404647 4WRPEH6C4B40P-2X/G24K0/A1M
0811404356 4WRPEH6C4B40P-2X/G24K0/B5M
R901167904 4WRPEH6C4B40P-2X/G24K0/F1M
R901387788 4WRPEH6C4B40L-2X/G24K0/C6V
R901276204 4WRPEH6C5B04L-2X/G24K0/A1M
R901213180 4WRPEH6C5B04L-2X/G24K0/F1M
R901236471 4WRPEH6C5B12L-2X/G24K0/A1M
R901231527 4WRPEH6C5B12L-2X/G24K0/F1M
R901098057 4WRPEH6C5B24L-2X/G24K0/A1M
R901137452 4WRPEH6C5B24L-2X/G24K0/F1M
0811404746 4WRPEH6C5B40L-2X/G24K0/A1M
0811404749 4WRPEH6C5B40L-2X/G24K0/F1M
R901348187 4WRPEH6C5B40L-2X/G24K0/F1V
0811404648 4WRPEH6C5B40P-2X/G24K0/A1M
0811404358 4WRPEH6C6B02L-2X/G24K0/A1M
0811404628 4WRPEH6K3B50P-2X/G24K0/A1M
0811404604 4WRPEH6KB50P-2X/G24K0/A1M
0811404620 4WRPEH6XB24L-2X/G24K0/A1M-743
力士樂(lè)REXROTH伺服電磁閥四位四通高頻單向閥門(mén)，直接驅(qū)動(dòng)，帶有集成電子和電氣位置反饋（OBE）4WRPEH 6 -3X
R901382520 4WRPEH6CB02L-3X/M/24A1
R901382376 4WRPEH6CB02L-3X/M/24F1
R901382365 4WRPEH6CB04L-3X/M/24A1
R901382374 4WRPEH6CB04L-3X/M/24F1
R901382505 4WRPEH6CB04L-3X/V/24F1
R901382492 4WRPEH6CB04P-3X/M/24A1
R901382334 4WRPEH6CB08P-3X/M/24A1
R901382337 4WRPEH6CB12L-3X/M/24A1
R901382371 4WRPEH6CB12L-3X/M/24F1
R901382530 4WRPEH6CB15P-3X/M/24A1
R901429091 4WRPEH6CB15P-3X/M/24F1
R901381804 4WRPEH6CB24L-3X/M/24A1
R901382372 4WRPEH6CB24L-3X/M/24F1
R901382526 4WRPEH6CB24L-3X/V/24F1
R901382490 4WRPEH6CB25P-3X/M/24A1
R901382353 4WRPEH6CB40L-3X/M/24A1
R901382354 4WRPEH6CB40L-3X/M/24F1
R901438744 4WRPEH6CB40L-3X/V/24A1
R901382630 4WRPEH6CB40P-3X/M/24A1
R901382375 4WRPEH6CB40P-3X/M/24F1
R901382538 4WRPEH6C1B12L-3X/M/24A1
R901436252 4WRPEH6C1B12L-3X/M/24F1
R901382527 4WRPEH6C1B24L-3X/M/24A1
R901382491 4WRPEH6C1B24L-3X/M/24F1
R901423624 4WRPEH6C1B24L-3X/V/24A1
R901382325 4WRPEH6C1B40L-3X/M/24A1
R901382487 4WRPEH6C1B40L-3X/M/24F1
R901382495 4WRPEH6C1B40P-3X/M/24A1
R901396969 4WRPEH6C3B04L-3X/M/24F1-885
R901376972 4WRPEH6C3B24L-3X/V/24F1
R901410492 4WRPEH6C3B40L-3X/M/24A1-15
R901382367 4WRPEH6C3B02L-3X/M/24A1
R901382336 4WRPEH6C3B02L-3X/M/24F1
R901382345 4WRPEH6C3B04L-3X/M/24A1
R901382347 4WRPEH6C3B04L-3X/M/24F1
R901382488 4WRPEH6C3B04L-3X/V/24A1
R901382514 4WRPEH6C3B04L-3X/V/24F1
R901382316 4WRPEH6C3B04P-3X/M/24A1
R901382502 4WRPEH6C3B04P-3X/M/24F1
R901382496 4WRPEH6C3B04P-3X/V/24A1
R901382537 4WRPEH6C3B04P-3X/V/24F1
R901396859 4WRPEH6C3B08L-3X/M/24A1
R901382504 4WRPEH6C3B08L-3X/V/24F1
R901382312 4WRPEH6C3B12L-3X/M/24A1
R901382348 4WRPEH6C3B12L-3X/M/24F1
R901382503 4WRPEH6C3B12L-3X/V/24A1
R901382513 4WRPEH6C3B12L-3X/V/24F1
R901382323 4WRPEH6C3B15P-3X/M/24A1
R901382511 4WRPEH6C3B15P-3X/M/24F1
R901382522 4WRPEH6C3B15P-3X/V/24A1
R901382313 4WRPEH6C3B24L-3X/M/24A1
R901382349 4WRPEH6C3B24L-3X/M/24F1
R901372986 4WRPEH6C3B24L-3X/V/24A1
R901382357 4WRPEH6C3B25P-3X/M/24A1
R901382535 4WRPEH6C3B25P-3X/M/24F1
R901382315 4WRPEH6C3B40L-3X/M/24A1
R901382350 4WRPEH6C3B40L-3X/M/24F1
R901382343 4WRPEH6C3B40L-3X/V/24A1
R901382516 4WRPEH6C3B40L-3X/V/24F1
R901382358 4WRPEH6C3B40P-3X/M/24A1
R901382539 4WRPEH6C3B40P-3X/M/24F1
R901382356 4WRPEH6C4B02L-3X/M/24A1
R901382338 4WRPEH6C4B02L-3X/M/24F1
R901382525 4WRPEH6C4B02L-3X/V/24F1
R901382317 4WRPEH6C4B04L-3X/M/24A1
R901382327 4WRPEH6C4B04L-3X/M/24F1
R901382528 4WRPEH6C4B04L-3X/V/24F1
R901382533 4WRPEH6C4B04P-3X/M/24A1
R901382318 4WRPEH6C4B12L-3X/M/24A1
R901412522 4WRPEH6C4B12L-3X/M/24A1-561
R901382331 4WRPEH6C4B12L-3X/M/24F1
R901431666 4WRPEH6C4B12L-3X/V/24A1
R901382359 4WRPEH6C4B15P-3X/M/24A1
R901382521 4WRPEH6C4B15P-3X/M/24F1
R901382346 4WRPEH6C4B24L-3X/M/24A1
R901382332 4WRPEH6C4B24L-3X/M/24F1
R901382523 4WRPEH6C4B24L-3X/V/24F1
R901382361 4WRPEH6C4B25P-3X/M/24A1
R901382532 4WRPEH6C4B25P-3X/M/24F1
R901382319 4WRPEH6C4B40L-3X/M/24A1
R901382333 4WRPEH6C4B40L-3X/M/24F1
R901382493 4WRPEH6C4B40L-3X/V/24A1
R901382509 4WRPEH6C4B40L-3X/V/24F1
R901382363 4WRPEH6C4B40P-3X/M/24A1
R901382512 4WRPEH6C4B40P-3X/M/24F1
R901382515 4WRPEH6C5B04L-3X/M/24F1
R901382524 4WRPEH6C5B04L-3X/M/24A1
R901382519 4WRPEH6C5B12L-3X/M/24A1
R901382517 4WRPEH6C5B12L-3X/M/24F1
R901382370 4WRPEH6C5B24L-3X/M/24A1
R901382510 4WRPEH6C5B24L-3X/M/24F1
R901408241 4WRPEH6C5B24L-3X/V/24A1
R901382368 4WRPEH6C5B40L-3X/M/24A1
R901382369 4WRPEH6C5B40L-3X/M/24F1
R901382534 4WRPEH6C5B40L-3X/V/24F1
R901382364 4WRPEH6C5B40P-3X/M/24A1
R901382520 4WRPEH6CB02L-30/M/24A1
R901382376 4WRPEH6CB02L-30/M/24F1
R901382365 4WRPEH6CB04L-30/M/24A1
R901382374 4WRPEH6CB04L-30/M/24F1
R901382505 4WRPEH6CB04L-30/V/24F1
R901382492 4WRPEH6CB04P-30/M/24A1
R901382334 4WRPEH6CB08P-30/M/24A1
R901382337 4WRPEH6CB12L-30/M/24A1
R901382371 4WRPEH6CB12L-30/M/24F1
R901382530 4WRPEH6CB15P-30/M/24A1
R901429091 4WRPEH6CB15P-30/M/24F1
R901381804 4WRPEH6CB24L-30/M/24A1
R901382372 4WRPEH6CB24L-30/M/24F1
R901382526 4WRPEH6CB24L-30/V/24F1
R901382490 4WRPEH6CB25P-30/M/24A1
R901382353 4WRPEH6CB40L-30/M/24A1
R901382354 4WRPEH6CB40L-30/M/24F1
R901438744 4WRPEH6CB40L-30/V/24A1
R901382630 4WRPEH6CB40P-30/M/24A1
R901382375 4WRPEH6CB40P-30/M/24F1
R901382538 4WRPEH6C1B12L-30/M/24A1
R901436252 4WRPEH6C1B12L-30/M/24F1
R901382527 4WRPEH6C1B24L-30/M/24A1
R901382491 4WRPEH6C1B24L-30/M/24F1
R901423624 4WRPEH6C1B24L-30/V/24A1
R901382325 4WRPEH6C1B40L-30/M/24A1
R901382487 4WRPEH6C1B40L-30/M/24F1
R901382495 4WRPEH6C1B40P-30/M/24A1
R901396969 4WRPEH6C3B04L-30/M/24F1-885
R901376972 4WRPEH6C3B24L-30/V/24F1
R901410492 4WRPEH6C3B40L-30/M/24A1-15
R901382367 4WRPEH6C3B02L-30/M/24A1
R901382336 4WRPEH6C3B02L-30/M/24F1
R901382345 4WRPEH6C3B04L-30/M/24A1
R901382347 4WRPEH6C3B04L-30/M/24F1
R901382488 4WRPEH6C3B04L-30/V/24A1
R901382514 4WRPEH6C3B04L-30/V/24F1
R901382316 4WRPEH6C3B04P-30/M/24A1
R901382502 4WRPEH6C3B04P-30/M/24F1
R901382496 4WRPEH6C3B04P-30/V/24A1
R901382537 4WRPEH6C3B04P-30/V/24F1
R901396859 4WRPEH6C3B08L-30/M/24A1
R901382504 4WRPEH6C3B08L-30/V/24F1
R901382312 4WRPEH6C3B12L-30/M/24A1
R901382348 4WRPEH6C3B12L-30/M/24F1
R901382503 4WRPEH6C3B12L-30/V/24A1
R901382513 4WRPEH6C3B12L-30/V/24F1
R901382323 4WRPEH6C3B15P-30/M/24A1
R901382511 4WRPEH6C3B15P-30/M/24F1
R901382522 4WRPEH6C3B15P-30/V/24A1
R901382313 4WRPEH6C3B24L-30/M/24A1
R901382349 4WRPEH6C3B24L-30/M/24F1
R901372986 4WRPEH6C3B24L-30/V/24A1
R901382357 4WRPEH6C3B25P-30/M/24A1
R901382535 4WRPEH6C3B25P-30/M/24F1
R901382315 4WRPEH6C3B40L-30/M/24A1
R901382350 4WRPEH6C3B40L-30/M/24F1
R901382343 4WRPEH6C3B40L-30/V/24A1
R901382516 4WRPEH6C3B40L-30/V/24F1
R901382358 4WRPEH6C3B40P-30/M/24A1
R901382539 4WRPEH6C3B40P-30/M/24F1
R901382356 4WRPEH6C4B02L-30/M/24A1
R901382338 4WRPEH6C4B02L-30/M/24F1
R901382525 4WRPEH6C4B02L-30/V/24F1
R901382317 4WRPEH6C4B04L-30/M/24A1
R901382327 4WRPEH6C4B04L-30/M/24F1
R901382528 4WRPEH6C4B04L-30/V/24F1
R901382533 4WRPEH6C4B04P-30/M/24A1
R901382318 4WRPEH6C4B12L-30/M/24A1
R901412522 4WRPEH6C4B12L-30/M/24A1-561
R901382331 4WRPEH6C4B12L-30/M/24F1
R901431666 4WRPEH6C4B12L-30/V/24A1
R901382359 4WRPEH6C4B15P-30/M/24A1
R901382521 4WRPEH6C4B15P-30/M/24F1
R901382346 4WRPEH6C4B24L-30/M/24A1
R901382332 4WRPEH6C4B24L-30/M/24F1
R901382523 4WRPEH6C4B24L-30/V/24F1
R901382361 4WRPEH6C4B25P-30/M/24A1
R901382532 4WRPEH6C4B25P-30/M/24F1
R901382319 4WRPEH6C4B40L-30/M/24A1
R901382333 4WRPEH6C4B40L-30/M/24F1
R901382493 4WRPEH6C4B40L-30/V/24A1
R901382509 4WRPEH6C4B40L-30/V/24F1
R901382363 4WRPEH6C4B40P-30/M/24A1
R901382512 4WRPEH6C4B40P-30/M/24F1
R901382515 4WRPEH6C5B04L-30/M/24F1
R901382524 4WRPEH6C5B04L-30/M/24A1
R901382519 4WRPEH6C5B12L-30/M/24A1
R901382517 4WRPEH6C5B12L-30/M/24F1
R901382370 4WRPEH6C5B24L-30/M/24A1
R901382510 4WRPEH6C5B24L-30/M/24F1
R901408241 4WRPEH6C5B24L-30/V/24A1
R901382368 4WRPEH6C5B40L-30/M/24A1
R901382369 4WRPEH6C5B40L-30/M/24F1
R901382534 4WRPEH6C5B40L-30/V/24F1
R901382364 4WRPEH6C5B40P-30/M/24A1
力士樂(lè)REXROTH四位四通高頻單向閥門(mén)，直接驅(qū)動(dòng)，具有集成電子和電氣位置反饋（OBE）4WRPEH 10
0811404809 4WRPEH10CB100L-2X/G24K0/A1M
R901416810 4WRPEH10CB100L-2X/G24K0/A1V
0811404806 4WRPEH10CB100L-2X/G24K0/F1M
R901233486 4WRPEH10CB100L-2X/G24K0/F1V
R901236409 4WRPEH10CB100P-2X/G24K0/F1M
0811404764 4WRPEH10CB50L-2X/G24K0/A1M
0811404765 4WRPEH10CB50L-2X/G24K0/F1M
R901295068 4WRPEH10CB50L-2X/G24K0/F1V
0811404816 4WRPEH10CB50P-2X/G24K0/F1M
0811404821 4WRPEH10C1B100L-2X/G24K0/A1M
R901279150 4WRPEH10C1B100L-2X/G24K0/A1V
0811404763 4WRPEH10C1B100L-2X/G24K0/F1M
0811404829 4WRPEH10C1B100P-2X/G24K0/A1M
0811404820 4WRPEH10C1B50L-2X/G24K0/A1M
0811404762 4WRPEH10C1B50L-2X/G24K0/F1M
0811404828 4WRPEH10C1B50P-2X/G24K0/A1M
0811404801 4WRPEH10C3B100L-2X/G24K0/A1M
0811404879 4WRPEH10C3B100L-2X/G24K0/A1M-844
R901183010 4WRPEH10C3B100L-2X/G24K0/A1M-932
R901192081 4WRPEH10C3B100L-2X/G24K0/A1M=SA
R901204810 4WRPEH10C3B100L-2X/G24K0/A1V
0811404813 4WRPEH10C3B100L-2X/G24K0/B5M
0811404817 4WRPEH10C3B100L-2X/G24K0/F1M
R901212890 4WRPEH10C3B100L-2X/G24K0/F1V
0811404823 4WRPEH10C3B100P-2X/G24K0/A1M
R901168836 4WRPEH10C3B100P-2X/G24K0/F1M
R901423003 4WRPEH10C3B100P-2X/G24K0/F1V
0811404800 4WRPEH10C3B50L-2X/G24K0/A1M
R901371313 4WRPEH10C3B50L-2X/G24K0/A1V
0811404808 4WRPEH10C3B50L-2X/G24K0/B5M
0811404819 4WRPEH10C3B50L-2X/G24K0/F1M
R901228642 4WRPEH10C3B50L-2X/G24K0/F1V
0811404822 4WRPEH10C3B50P-2X/G24K0/A1M
R901121806 4WRPEH10C3B50P-2X/G24K0/F1M
0811404803 4WRPEH10C4B100L-2X/G24K0/A1M
0811404807 4WRPEH10C4B100L-2X/G24K0/A1V
0811404761 4WRPEH10C4B100L-2X/G24K0/F1M
R901383466 4WRPEH10C4B100L-2X/G24K0/F1V
0811404825 4WRPEH10C4B100P-2X/G24K0/A1M
R901150034 4WRPEH10C4B100P-2X/G24K0/F1M
0811404802 4WRPEH10C4B50L-2X/G24K0/A1M
0811404812 4WRPEH10C4B50L-2X/G24K0/B5M
0811404760 4WRPEH10C4B50L-2X/G24K0/F1M
R901186254 4WRPEH10C4B50L-2X/G24K0/F1V
0811404824 4WRPEH10C4B50P-2X/G24K0/A1M
0811404559 4WRPEH10C4B50P-2X/G24K0/F1M
0811404759 4WRPEH10C5B100L-2X/G24K0/F1M
0811404827 4WRPEH10C5B100P-2X/G24K0/A1M
R901406210 4WRPEH10C5B100P-2X/G24K0/F1M
0811404756 4WRPEH10C5B50L-2X/G24K0/A1M
0811404758 4WRPEH10C5B50L-2X/G24K0/F1M
0811404826 4WRPEH10C5B50P-2X/G24K0/A1M
0811404757 4WRPEH10C5B100L-2X/G24K0/A1M
R901422438 4WRPEH10C5B100L-2X/G24K0/A1V-36
力士樂(lè)REXROTH高響應(yīng)的換向閥，直接操作，集成的數(shù)字軸控制器（IAC多以太網(wǎng)）4WRPDH
R901415733 4WRPDH10C1B100L-2X/M/24ND6T
R901372234 4WRPDH10C3B100L-2X/M/24SD6T
R901372818 4WRPDH10C3B100L-2X/M/24TD6T
R901319678 4WRPDH10C3B100P-2X/M/24TD6T
R901339086 4WRPDH10C4B100L-2X/M/24ED6T
R901395440 4WRPDH10C4B100L-2X/M/24TD6T
R901428266 4WRPDH10C5B100L-2X/M/24ND6T
R901426772 4WRPDH10C5B50L-2X/M/24ND6T
R901428555 4WRPDH6CB02L-2X/M/24ND6T
R901375537 4WRPDH6CB40P-2X/M/24ND6T
R901416340 4WRPDH6C1B40L-2X/M/24ED6T
R901368366 4WRPDH6C3B04L-2X/M/24SD6T
R901430058 4WRPDH6C3B12L-2X/M/24ND6T
R901372111 4WRPDH6C3B12L-2X/M/24SD6T
R901372816 4WRPDH6C3B12L-2X/M/24TD6T
R901329736 4WRPDH6C3B15P-2X/M/24SD6S
R901157482 4WRPDH6C3B15P-2X/M/24SD6U
R901327738 4WRPDH6C3B15P-2X/M/24SD6U-995
R901368365 4WRPDH6C3B24L-2X/M/24SD6U
R901438459 4WRPDH6C3B40L-2X/M/24ED6T
R901405787 4WRPDH6C3B40L-2X/M/24ND6T
R901368364 4WRPDH6C3B40L-2X/M/24SD6U
R901435066 4WRPDH6C3B40L-2X/M/24SD6U-995
R901384132 4WRPDH6C3B40L-2X/M/24TD6T
R901156750 4WRPDH6C3B40P-2X/M/24ND6T
R901157481 4WRPDH6C3B40P-2X/M/24SD6U
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力士樂(lè)REXROTH帶集成的數(shù)字軸控制器（IAC-R）和現(xiàn)場(chǎng)總線接口的高響應(yīng)控制閥4WRPNH../24F..
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力士樂(lè)REXROTH三位四通高響應(yīng)的換向閥，直接操作、集成電子控制（OBE）4WRSE
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液壓執(zhí)行元件
將液壓能轉(zhuǎn)換為機(jī)械能的裝置，其作用是在壓力油的推動(dòng)下輸出力和速度或轉(zhuǎn)矩和速度，以驅(qū)動(dòng)工作裝置做工。例如液壓缸、液壓馬達(dá)。
2.1液壓馬達(dá)
液壓馬達(dá)習(xí)慣上是指輸出旋轉(zhuǎn)運(yùn)動(dòng)的，將液壓泵提供的液壓能轉(zhuǎn)變?yōu)闄C(jī)械能的能量轉(zhuǎn)換裝置。
液壓馬達(dá)亦稱(chēng)為油馬達(dá)，主要應(yīng)用于注塑機(jī)械、船舶、起揚(yáng)機(jī)、工程機(jī)械、建筑機(jī)械、煤礦機(jī)械、礦山機(jī)械、冶金機(jī)械、船舶機(jī)械、石油化工、港口機(jī)械等。
高速馬達(dá)齒輪馬達(dá)具有體積小、重量輕、結(jié)構(gòu)簡(jiǎn)單、工藝性好、對(duì)油液的污染不敏感、耐沖擊和慣性小等優(yōu)點(diǎn)。缺點(diǎn)有扭矩脈動(dòng)較大、效率較低、起動(dòng)扭矩較小(僅為額定扭矩的60%-一70%)和低速穩(wěn)定性差等。
2.2液壓缸
液壓缸是將液壓能轉(zhuǎn)變?yōu)闄C(jī)械能的、做直線往復(fù)運(yùn)動(dòng)(或擺動(dòng)運(yùn)動(dòng))的液壓執(zhí)行元件。它結(jié)構(gòu)簡(jiǎn)單、工作可靠。用它來(lái)實(shí)現(xiàn)往復(fù)運(yùn)動(dòng)時(shí)，可免去減速裝置，并且沒(méi)有傳動(dòng)間隙，運(yùn)動(dòng)平穩(wěn)，因此在各種機(jī)械的液壓系統(tǒng)中得到廣泛應(yīng)用。液壓缸輸出力和活塞有效面積及其兩邊的壓差成正比;液壓缸基本上由缸筒和缸蓋、活塞和活塞桿、密封裝置、緩神裝置與排氣裝置組成。緩神裝置與排氣裝置視具體應(yīng)用場(chǎng)合而定，其他裝置則必不可少。
3.3液壓控制調(diào)節(jié)元件
用來(lái)控制液壓傳動(dòng)系統(tǒng)中油液的流動(dòng)方向、壓力和流量，以保證液壓執(zhí)行元件和工作裝置完成指定工作。
液壓傳動(dòng)中用來(lái)控制液體壓力、流量和方向的元件。其中控制壓力的稱(chēng)為壓力控制閥，控制流量的稱(chēng)為流量控制閥，控制通、斷和流向的稱(chēng)為方向控制閥。
3.4液壓輔助元件
保證液壓傳動(dòng)系統(tǒng)正常工作。例如油箱、油管、濾油器。
液壓輔件是系統(tǒng)的一一個(gè)重要組成部分，其合理設(shè)計(jì)和選用在很大程度上影響液壓系統(tǒng)的效率、噪聲、溫升、工作可靠性等技術(shù)性能。主要包括:
3.4.1過(guò)濾器
過(guò)濾器的作用:濾去油中雜質(zhì)，維護(hù)油液清潔，防止油液污染，保證系統(tǒng)正常工作。
3.4.2蓄能器
蓄能器的作用:
蓄能器是液壓系統(tǒng)中儲(chǔ)存和釋放壓力能的裝置。
1.作輔助動(dòng)力源或緊急動(dòng)力源在工作循環(huán)不同階段需要的流量變化很大時(shí)，常采用蓄能器和一個(gè)流量較小的泵組成油源。另外當(dāng)驅(qū)動(dòng)泵的原動(dòng)機(jī)發(fā)生故障時(shí)，蓄能器可作緊急動(dòng)力源。
2.保壓和補(bǔ)充泄漏需要較長(zhǎng)時(shí)間保壓而泵卸載時(shí)，可利用蓄能器釋放儲(chǔ)存的壓力油，補(bǔ)充系統(tǒng)泄漏，保持系統(tǒng)壓力。
3.吸收沖擊和消除壓力脈動(dòng)在壓力沖擊處和泵的出口安裝蓄能器可吸收壓力沖擊峰值和壓力脈動(dòng)，提高系統(tǒng)工作的平穩(wěn)性。
3.4.3油箱
油箱是液壓系統(tǒng)中儲(chǔ)存液壓油用。
油箱的功用:
儲(chǔ)存系統(tǒng)所需的足夠油液;;
散發(fā)油液中的熱量;
逸出溶解在油液中的空氣; :
沉淀油液中的污物;
對(duì)中小型液壓系統(tǒng)，泵裝置及一些液壓元件還安裝在油箱頂板上。
3.4.4熱交換器
系統(tǒng)能量損失轉(zhuǎn)換為熱量以后，會(huì)使油液溫度升高。若長(zhǎng)時(shí)間油溫過(guò)高,油液粘度下降，泄漏增加，密封老化，油液氧化，嚴(yán)重影響系統(tǒng)正常工作。為保證正常工作溫度在20~65C，需要在系統(tǒng)中安裝冷卻器。相反，油溫過(guò)低，油液粘度過(guò)大，設(shè)備啟動(dòng)困難，壓力損失加大并引起過(guò)大的振動(dòng)。此種情況下系統(tǒng)應(yīng)安裝加熱器，將油液溫度升高到適合的溫度。
3.4.5管件
管件是用來(lái)連接液壓元件、輸送液壓油液的連接件。它應(yīng)保證有足夠的強(qiáng)度,沒(méi)有泄漏,密封性能好，壓力損失小，拆裝方便。
3.4.6密封裝置
密封裝置用來(lái)防止系統(tǒng)油液的內(nèi)外泄漏，以及外界灰塵和異物的侵入，保證系統(tǒng)建立必要壓力。
3.5液壓工作介質(zhì)
工作介質(zhì)指?jìng)鲃?dòng)液體，通常被稱(chēng)為液壓油。
3.5.1液壓油
液壓油引就是利用液體壓力能的液壓系統(tǒng)使用的液壓介質(zhì)，在液壓系統(tǒng)中起著能量傳遞、系統(tǒng)潤(rùn)滑、防腐、防銹、冷卻等作用。對(duì)于液壓油來(lái)說(shuō)，首先應(yīng)滿(mǎn)足液壓裝置在工作溫度下與啟動(dòng)溫度下對(duì)液體粘度的要求，由于油的粘度變化直接與液壓動(dòng)作、傳遞效率和傳遞精度有關(guān)，還要求油的粘溫性能和剪切安定性應(yīng)滿(mǎn)足不同用途所提出的各種需求。
3.5.2液壓油的要求
質(zhì)量要求:
1.合適的粘 度和良好的粘溫性能，以保證液壓元件在工作壓力和工作溫度發(fā)生變化的條件下得到良好潤(rùn)滑、冷卻和密封。
2.良好的極壓抗磨性， 以保證油泵、液壓馬達(dá)、控制閥和油缸中的摩擦副在高壓、高速苛刻條件下得到正常的潤(rùn)滑，減少磨損。
3.優(yōu)良的抗氧化安定性、水解安定性和熱穩(wěn)定性，以抵抗空氣、水分和高溫、高壓等因素的影響或作用，使其不易老化變質(zhì)，延長(zhǎng)使用壽命。
4.良好的抗泡性 和空氣釋放值，以保證在運(yùn)轉(zhuǎn)中受到機(jī)械劇烈攪拌的條件下產(chǎn)生的泡沫能迅速消失:并能將混入油中的空氣在較短時(shí)間內(nèi)釋放出來(lái)，以實(shí)現(xiàn)準(zhǔn)確、靈敏、平穩(wěn)地傳遞靜壓。
5.良好的抗乳化性， 能與混入油中的水分迅速分離，以免形成乳化液，引起液壓系統(tǒng)的金屬材質(zhì)銹蝕和降低使用性能。
6.良好的防銹性，以防止金屬表面銹蝕。

四、液壓傳動(dòng)技術(shù)在機(jī)械中的應(yīng)用.
驅(qū)動(dòng)機(jī)械運(yùn)動(dòng)的機(jī)構(gòu)以及各種傳動(dòng)和操縱裝置有多中形式。根據(jù)所用的不見(jiàn)和零件，可分為機(jī)械的、電氣的、氣動(dòng)的、液壓的傳動(dòng)裝置。經(jīng)常還將不同的形式組合起來(lái)運(yùn)用一四位一體。由于液壓傳動(dòng)具有很多優(yōu)點(diǎn)，使這種新技術(shù)發(fā)展的很快。液壓傳動(dòng)應(yīng)用與金屬切割機(jī)床也不過(guò)四五十年的歷史。航空工業(yè)在1930年以后才開(kāi)始采用。特別是近二三十年一來(lái)液壓技術(shù)在各種工業(yè)中的應(yīng)用越來(lái)越廣泛。
1、在機(jī)床上，液壓傳動(dòng)常應(yīng)用在以下的- -些裝置中
1.1進(jìn)給 傳動(dòng)裝置磨床砂輪架和工作臺(tái)的進(jìn)給運(yùn)動(dòng)大部分采用液壓傳動(dòng);車(chē)床、六角車(chē)床、自動(dòng)車(chē)床的刀架或轉(zhuǎn)塔刀架，銑床、刨床、組合機(jī)床的工作臺(tái)等的進(jìn)給運(yùn)動(dòng)也都采用液壓傳動(dòng)。這些部件有的要求快速移動(dòng)，有的要求慢速移動(dòng)。有的既要求快速移動(dòng)，也要求慢速移動(dòng)。這些運(yùn)動(dòng)多半要求有較大的調(diào)速范圍，要求在工作中無(wú)級(jí)調(diào)速;有的要求持續(xù)進(jìn)給，有的要求間歇進(jìn)給;有的要求在負(fù)載變化下速度恒定，有的要求有良好的換向性能等等。所有這些要求都是可以用液壓傳動(dòng)來(lái)實(shí)現(xiàn)的。
1.2往復(fù)主題運(yùn)動(dòng)傳動(dòng)裝置龍i刨床的工作臺(tái)、牛頭刨床或插床的滑枕，由于要求作高速往復(fù)直線運(yùn)動(dòng)并且要求換向沖擊小、換向時(shí)間短、能耗低，因此都可以采用液壓傳動(dòng)。
1.3仿形裝置車(chē)床、銑床、刨床上的仿形加工可以采用液壓伺服系統(tǒng)來(lái)完成。起精度可達(dá)0.01-0. 02m。此外，磨床上的成型砂輪修正裝置亦可采用這系統(tǒng)。
1.4 輔助裝置機(jī)床上的夾緊裝置、齒輪箱變速操縱裝置、絲桿螺母間隙消除裝置、垂直移動(dòng)部件平衡裝置、分度裝置、工件和刀具裝卸裝置、工件輸送裝置等，采用液壓傳動(dòng)，有利于簡(jiǎn)化機(jī)床結(jié)構(gòu)，提高機(jī)床自動(dòng)化程度。
1.5靜壓支承重型機(jī)床、高速機(jī)床、高精度機(jī)床上的軸承、導(dǎo)軌、絲桿螺母機(jī)構(gòu)等處采用液壓靜支承后，可以提高工作平穩(wěn)性和運(yùn)動(dòng)精度。
2、液壓傳動(dòng)技術(shù)在工程機(jī)械行走驅(qū)動(dòng)中的應(yīng)用
行走驅(qū)動(dòng)系統(tǒng)是工程機(jī)械的重要組成部分。與工作系統(tǒng)相比，行走驅(qū)動(dòng)系統(tǒng)不僅需要傳輸更大的功率，要求器件具有更高的效率和更長(zhǎng)的壽命，還希望在變速調(diào)速、差速、改變輸出軸旋轉(zhuǎn)方向及反向傳輸動(dòng)力等方面具有良好的能力。于是，采用何種傳動(dòng)方式，如何更好地滿(mǎn)足各種工程機(jī)械行走驅(qū)動(dòng)的需要，-直是工程機(jī)械行業(yè)所要面對(duì)的課題。尤其是近年來(lái)，隨著我國(guó)交通、能源等基礎(chǔ)設(shè)施建設(shè)進(jìn)程的快速發(fā)展，建筑施工和資源開(kāi)發(fā)規(guī)模不斷擴(kuò)大，工程機(jī)械在市場(chǎng)需求大大增強(qiáng)的同時(shí)，更面臨著作業(yè)環(huán)境更為苛刻、工沉條件更為復(fù)雜等所帶來(lái)的挑戰(zhàn)，也進(jìn)一步推動(dòng)著對(duì)其行走驅(qū)動(dòng)系統(tǒng)的深入研究。

液壓傳動(dòng)是一種可達(dá)到傳遞動(dòng)力、增加動(dòng)力、改變速比等目的的傳動(dòng)方式。液壓傳動(dòng)是以液體為工作介質(zhì)，靠處于密閉容器內(nèi)的液體靜壓力來(lái)傳遞力的傳動(dòng)方式，靜壓力的大小取決于負(fù)載，而負(fù)載速度的傳遞是按液體容積變化相等的原則進(jìn)行的，其速度大小取決于流量；如果忽略損失，液壓傳動(dòng)所傳遞的力與速度無(wú)關(guān)。
液壓傳動(dòng)相比其他傳統(tǒng)傳動(dòng)方式優(yōu)勢(shì)較為明顯：1）功率重量比大，能以較輕的設(shè)備重量取得更大的力和轉(zhuǎn)矩；2）慣性小，啟動(dòng)、制動(dòng)迅速；3）無(wú)級(jí)調(diào)速，調(diào)速范圍大，低速性能好；4）高響應(yīng)速度；5）高負(fù)載剛度；6）可控性好，易于實(shí)現(xiàn)自動(dòng)化，液壓元件位臵可以根據(jù)設(shè)備需要進(jìn)行調(diào)整。