HEWEIYY疊加式液控單向閥MPW-03-2-20/MPA-03-2-20/MPB-03-2-20
液壓系統(tǒng)電液比例方向閥結(jié)構(gòu)介紹
電液比例方向控制閥能按輸入電信號(hào)的極性和幅值大小,同時(shí)對(duì)液壓系統(tǒng)液流方向和流量進(jìn)行控制,從而實(shí)現(xiàn)對(duì)執(zhí)行器運(yùn)動(dòng)方向和速度的控制。在壓差恒定條件下,通過(guò)電液比例方向閥的流量與輸入電信號(hào)的幅值成比例,而流動(dòng)方向取決于比例電磁鐵是否受到激勵(lì)。
圖1爲(wèi)一種普通型直動(dòng)式電液比例方向節(jié)流閥的結(jié)構(gòu)原理圖。它主要由兩個(gè)比例磁鐵1、6,閥體3,閥心(四邊滑閥)4,對(duì)中彈簧2、5組成。當(dāng)比例電磁鐵1通電時(shí),閥心右移,油口P與B通,A與T通,而閥口的開(kāi)度與電磁鐵1的輸入電流成比例;當(dāng)電磁鐵6通電時(shí),閥心向左移,油口P與A通、B與T通,閥口開(kāi)度與電磁鐵6的輸入電流成比例。
與伺服閥不同的是,這種閥的四個(gè)控制邊有較大的遮蓋量,端彈簧具有一定的安裝預(yù)壓縮量。閥的穩(wěn)態(tài)控制特性有較大的中位死區(qū)。另外,由于受摩擦力及閥口液動(dòng)力等干擾的影響,這種直動(dòng)式電液比例方向節(jié)流閥的閥心定位精度不高,尤其是在高壓大流量工況下,穩(wěn)態(tài)液動(dòng)力的影響更加突出。爲(wèi)了提高 電液比例方向閥的控制精度,可以采用位移電反饋型直動(dòng)式電液比例方向節(jié)流閥。
普通型直動(dòng)式電液比例方向節(jié)流閥
圖2爲(wèi)減壓型先導(dǎo)級(jí)十主閥彈簧定位型電液比例方向節(jié)流閥的結(jié)構(gòu)原理圖。其先導(dǎo)閥能輸出與輸入電信號(hào)成比例的控制壓力,與輸入信號(hào)極性相對(duì)應(yīng)的兩個(gè)出口壓力,分別被引至主閥心2的兩端,利用它在兩個(gè)端面上所産生的液壓力與對(duì)中彈簧3的彈簧力平衡,使主閥心2與輸入信號(hào)成比例定位。采用減壓型先導(dǎo)級(jí)后不必像原理相似的先導(dǎo)溢流型那樣,持續(xù)不斷地耗費(fèi)先導(dǎo)控制油。先導(dǎo)控制油既可內(nèi)供,也可外供,如果先導(dǎo)控制油壓力超過(guò)規(guī)定值,可用先導(dǎo)減壓閥塊將先導(dǎo)壓力降下來(lái)。主閥采用單彈簧對(duì)中形式,彈簧有預(yù)壓縮量,當(dāng)先導(dǎo)閥無(wú)輸入信號(hào)時(shí),主閥心對(duì)中。單彈簧既簡(jiǎn)化了閥的結(jié)構(gòu),又使閥的對(duì)稱(chēng)性好。
定位型電液比例方向節(jié)流閥
DSG-01-2B2-D24-N1-50 DSG-01-2B2-A120-N1-50 DSG-01-2B2-A240-N1-50 DSG-01-2B2L-D24-N1-50 DSG-01-2B2B-D24-N1-50 DSG-01-2B2A-...-N1-50 DSG-01-2B3-...-N1-50 DSG-01-2B3B-...-N1-50 DSG-01-2B3A-...-N1-50 DSG-01-2B4B-...-N1-50 DSG-01-2B60B-...-N1-50 DSG-01-2B8-...-N1-50 DSG-01-2B10B-...-N1-50 DSG-01-2B11B-...-N1-50 DSG-01-2B2-D24-50 DSG-01-2B2-A120-50 DSG-01-2B2-A240-50 DSG-01-2B2L-...-50 DSG-01-2B2B-...-50 DSG-01-2B2A-...-50 DSG-01-2B3-...-50 DSG-01-2B3B-...-50 DSG-01-2B3A-...-50 DSG-01-2B4B-...-50 DSG-01-2B60B-...-50 DSG-01-2B8-...-50 DSG-01-2B10B-...-50 DSG-01-2B11B-...-50 DSG-01-3C2-D24-N1-50 DSG-01-3C2-A120-N1-50 DSG-01-3C2-A240-N1-50 DSG-01-3C4-D24-N1-50 DSG-01-3C4-A120-N1-50 DSG-01-3C4-A240-N1-50 DSG-01-3C60-D24-N1-50 DSG-01-3C60-A120-N1-50 DSG-01-3C60-A240-N1-50 DSG-01-2D2-D24-N1-50 DSG-01-2D2-A120-N1-50 DSG-01-2D2-A240-N1-50 DSG-01-2N2-...-N1-50 DSG-01-3C9-...-N1-50 DSG-01-3C10-...-N1-50 DSG-01-3C11-...-N1-50 DSG-01-3C12-...-N1-50 DSG-01-3C2-D24-50 DSG-01-3C2-A120-50 DSG-01-3C2-A240-50 DSG-01-3C4-D24-50 DSG-01-3C4-A120-50 DSG-01-3C4-A240-50 DSG-01-3C60-D24-50 DSG-01-3C60-A120-50 DSG-01-3C60-A240-50 DSG-01-2D2-D24-50 DSG-01-2D2-A120-50 DSG-01-2D2-A240-50 DSG-01-2N2-...-50 DSG-01-3C9-...-50 DSG-01-3C10-...-50 DSG-01-3C11-...-50 DSG-01-3C12-...-50 DSG-02-2B2-DL (DC24V) DSG-02-2B2-DL (AC220V) DSG-02-3C2-DL (DC24V) DSG-02-3C2-DL (AC220V) DSG-02-3C3-DL (DC24V) DSG-02-3C3-DL (AC220V) DSG-02-3C4-DL (DC24V) DSG-02-3C4-DL (AC220V) DSG-02-3C6-DL (DC24V) DSG-02-3C6-DL (AC220V) DSG-02-2B2-LW (DC24V) DSG-02-2B2-LW (AC220V) DSG-02-3C2-LW (DC24V)) DSG-02-3C2-LW (AC220V) DSG-02-3C3-LW (DC24V)) DSG-02-3C3-LW (AC220V) DSG-02-3C4-LW (DC24V) DSG-02-3C4-LW (AC220V) DSG-02-3C6-LW (DC24V) DSG-02-3C6-LW (AC220V)
MPCV-02W- MPCV-02A- MPCV-02B- MPCV-03W- MPCV-03A- MPCV-03B- MPCV-04W MPCV-04A MPCV-04B MPCV-06W MPCV-06A MPCV-06B MPC-02W- MPC-02A- MPC-02B- MPC-03W- MPC-03A- MPC-03B- MPC-04W- MPC-04A- MPC-04B- MPC-06W- MPC-06A- MPC-06B- SPV-02W SPV-02A SPV-02B SPV-03W SPV-03A SPV-03B SPV-04W SPV-04A SPV-04B SPV-06W SPV-06A SPV-06B MP-02W-*-55 MP-02A-*-55 MP-02B-*-55 MP-03W-*-40 MP-03A-*-40 MP-03B-*-40
DSHG-04-2B2-A220 DSHG-04-2B2-D24 DSHG-04-3C2 -D24 DSHG-04-3C2-A220 DSHG-04-3C4-A220 DSHG-04-3C4-D24 DSHG-04-3C60-A220 DSHG-04-3C60-D24 04配套底座 06配套底座 DSHG-06-3C2-A220 DSHG-06-3C4-A220 DSHG-06-3C4-D24 DSHG-06-3C60-A220 DSHG-06-3C60-D24 DSHG-04-3C12-D24 DSHG-04-3C3-D24-N-51
MTCV-02W-X 出口節(jié)流 MTCV-02W-Y 進(jìn)口節(jié)流 MTCV-03W-X 出口節(jié)流 MTCV-03W-Y 進(jìn)口節(jié)流 MTCCV-04W-X 出口節(jié)流 MTCV-04X-Y 進(jìn)口節(jié)流 MTCV-06W-X 出口節(jié)流 MTCV-06W-Y 進(jìn)口節(jié)流
4WE10E31B/CG24N9Z5L 4WE10E31B/CW220-50N9Z5L 4WE10H31B/CG24N9Z5L 4WE10H31B/CW220-50N9Z5L 4WE10J31B/CG24N9Z5L 4WE10J31B/CW220-50N9Z5L 4WE10G31B/CG24N9Z5L 4WE10G31B/CW220-50N9Z5L 4WE10D31B/OF/CG24N9Z5L 4WE10D31B/OF/CW220-50N9Z5L 4WE10C31B/OF/CG24N9Z5L 4WE10C31B/OF/CW220-50N9Z5L 4WE10L31B/CG24N9Z5L 4WE10L31B/CW220-50N9Z5L 4WE10P31B/CG24N9Z5L 4WE10P31B/CW220-50N9Z5L 4WE10M31B/CG24N9Z5L 4WE10M31B/CW220-50N9Z5L 4WE10F31B/CG24N9Z5L 4WE10F31B/CW220-50N9Z5L 4WE10U31B/CG24N9Z5L 4WE10U31B/CW220-50N9Z5L 4WE10G31B/CG12RN9Z5L 4WE6D61-CG24N9Z5L 4WE6D61-CW220N9Z5L 4WE6E61-CG24N9Z5L 4WE6E61-CW220N9Z5L 4WE6F61-CG24N9Z5L 4WE6F61-CW220N9Z5L 4WE6G61-CG24N9Z5L 4WE6G61-CW220N9Z5L 4WE6H61-CG24N9Z5L 4WE6H61-CW220N9Z5L 4WE6J61-CG24N9Z5L 4WE6J61-CW220N9Z5L 4WE6L61-CG24N9Z5L 4WE6L61-CW220N9Z5L 4WE6M61-CG24N9Z5L 4WE6M61-CW220N9Z5L 4WE6P61-CG24N9Z5L 4WE6P61-CW220N9Z5L 4WE6U6-CW220N9Z5L 4WE6U61-CG24N9Z5L 4WE6W61-CG24N9Z5L 4WE6W61-CW220N9Z5L 4WE6Y61-CG24N9Z5L 4WE6Y61-CW220N9Z5L
MSCV-02A MSCV-03A MSCV-04A MSCV-06A MSCV-02B MSCV-03B MSCV-04B MSCV-06B MHA-02 MHA-03 MHA-04 MHA-06 MHB-02 MHB-03 MHB-04 MHB-06
MRV-02-P-0-10 MRV-02-P-1-10 MRV-02-P-2-10 MRV-02-P-3-10 MRV-02-P-4-10 MRV-03-P-0-10 MRV-03-P-1-10 MRV-03-P-2-10 MRV-03-P-3-10 MRV-03-P-4-10 MRV-02-A 系列 MRV-02-B 系列 MRV-02-W 系列 MRV-03-A 系列 MRV-03-B 系列 MRV-03-W 系列 MRV-02A- MRV-02B- MRV-02P- MRV-02W- MRV-03A- MRV-03B- MRV-03P- MRV-03W- MRV-04A- MRV-04B- MRV-04P- MRV-06A- MRV-06B- MRF-02A-K-*-20 MRF-02B-K-*-20 MRF-02P-K-*-20 MRF-02C-K-*-20 MRF-03A-K-*-20 MRF-03B-K-*-20 MRF-03P-K-*-20 MRF-03C-K-*-20 MRF-04A-K-*-20 MRF-04B-K-*-20 MRF-04P-K-*-20 MRF-06A-K-*-20 MRF-06B-K-*-20 SRV-02A- SRV-02B- SRV-02P- SRV-02W- SRV-03A- SRV-03B- SRV-03P- SRV-03W- SRV-04A- SRV-04B- SRV-04P- DY-02A-*-70 DY-02B-*-70 DY-02P-*-70 DY-02W-*-70 DY-03A-*-70 DY-03B-*-70 DY-03P-*-70 DY-03W-*-70
MSW-01-X-50 MSW-01-Y-50 MSW-02-X-50 MSW-02-Y-50 MSW-03-X-50 MSW-03-Y-50 MSW-04-X-50 MSW-06-X-50 MSA-01-X-50 MSA-01-Y-50 MSA-02-X-50 MSA-02-Y-50 MSA-03-X-50 MSA-03-Y-50 MSA-04-X-50 MSA-06-X-50 MSB-01-X-50 MSB-02-X-50 MSB-03-X-50 MSB-04-X-50 MSB-06-X-50
MPW-02B MPW-02A MPW-02W MPW-03B MPW-03A MPW-03W MPW-04 MPW-06 MPW-01-2-40 MPW-01-4-40 MPW-03-2-20 MPW-03-4-20 MPW-04-2-10Y MPW-04-4-10Y MPW-06-2-30 MPW-06-4-30 MPA-01-2-40 MPA-01-4-40 MPA-03-2-20 MPA-03-4-20 MPA-04-2-10Y MPA-04-4-10Y MPA-06-2-30 MPA-06-4-30 MPB-01-2-40 MPB-01-4-40 MPB-03-2-20 MPB-03-4-20 MPB-04-2-10Y MPB-04-4-10Y MPB-06-2-30 MPB-06-4-30
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