?H-4WEH25J6X/6EG24N9ETK4/B10D3

武穴黎翔機(jī)電設(shè)備有限公司，

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穆格MOOG伺服閥??D634-371C?R24K02M0NSS2現(xiàn)貨

R900925687?4WRAE10W1-30-22/G24N9K31/F1V?現(xiàn)貨

由于電磁鐵推力的限制，在大于63L/min的液壓系統(tǒng)中，一般不再選用直推式的電磁換向閥，而選用通過(guò)流量較大的電液換向閥。電液換向閥的原理是：控制油通過(guò)電磁先導(dǎo)閥到達(dá)電液閥主閥芯的兩端（即電液換向閥主閥體兩端蓋側(cè)），通過(guò)電磁先導(dǎo)閥的換向，來(lái)實(shí)現(xiàn)主閥芯的左右移動(dòng)，從而開(kāi)通或切斷通往執(zhí)行元件的油路，使執(zhí)行元件運(yùn)行或停止。但在打開(kāi)或切斷油路的瞬間，系統(tǒng)中會(huì)產(chǎn)生相當(dāng)大的沖擊，這種沖擊會(huì)極大影響液壓系統(tǒng)中液壓元件和密封件的使用壽命。為了減小及至消除由此引起的液壓沖擊，最簡(jiǎn)單的辦法是在該電液閥下面疊加一個(gè)P口節(jié)流閥或進(jìn)油節(jié)流式雙單向節(jié)流閥、出油節(jié)流式雙單向節(jié)流閥，以延長(zhǎng)閥芯的換向及復(fù)位時(shí)間，從而到降低液壓沖擊的目的。下面就以彈簧復(fù)位型、三位四通中封式電液壓換向閥為例、對(duì)該三種疊加節(jié)流方式作簡(jiǎn)要說(shuō)明。

H-4WEH16J7X/6EG24N9ETK4

H-4WEH16E-7X/6AG24NTK4+57292

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4WEH16E7X/6EG24N9ETK4

4WEH16J-50/6AG24N9K4

4WEH10J33/EG24NZ5L

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4WEH16J61/CG24NETZ5L

4WEH16E7X/6SG24N9ETK4

H-4WEH25G6X/6SG24N9TK4

一、疊加一個(gè)P口可調(diào)節(jié)流閥：控制油先通過(guò)疊加可調(diào)節(jié)流閥、到達(dá)電磁先導(dǎo)閥的P口，通過(guò)電磁先導(dǎo)閥的換向及調(diào)整節(jié)流閥的開(kāi)度，來(lái)實(shí)現(xiàn)主閥芯的換向延時(shí)，從而達(dá)到降低主油路與執(zhí)行元件接通時(shí)的換向沖擊。但先導(dǎo)電磁閥斷電時(shí)、彈簧復(fù)位型電液換向閥主閥體兩端蓋內(nèi)的液壓油會(huì)通過(guò)先導(dǎo)電磁閥的中位與泄油口接通、主閥芯在復(fù)位彈簧的作用下會(huì)立即復(fù)位，由于主閥芯復(fù)位快、亦即切斷執(zhí)行元件油路的速度快、從而引起液壓沖擊。由此可見(jiàn)，疊加一個(gè)P口可調(diào)節(jié)流閥，只能實(shí)現(xiàn)換向接通延時(shí)、不能解決復(fù)位切斷延時(shí)。注：象油缸類的執(zhí)行元件，油缸前進(jìn)與后退時(shí)通過(guò)換向閥的流量是不一致的，油缸無(wú)桿腔與有桿腔的面積比越大、流量差距也越大，此時(shí)若想較滿意的降

???若回路負(fù)載持續(xù)上升，泵的壓力也持續(xù)上升，當(dāng)屬正常。若負(fù)載一定，泵的壓力超過(guò)負(fù)載所需壓力值，則應(yīng)檢查泵以外的液壓元件，如方向閥、壓力閥、傳動(dòng)裝置和回油管道。若最大壓力過(guò)高，應(yīng)調(diào)整溢流閥。

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力士樂(lè)柱塞泵現(xiàn)貨供應(yīng)，歡迎來(lái)電垂詢。

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A4VSO250LR2/30R-PPB13N00?

A4VSO250LR2G/30R-PPB13N00?

A4VSO250LR2N/30R-PPB13N00?

A4VSO180DFR/22R-PPB13N00?

A4VSO180DR/22R-PPB13N00?

A4VSO180DRG/22R-PPB13N00

A2FO定量泵

A2FO10/61R-PAB06?A2FO10/61R-PBB06?A2FO12/61R-PAB06?

A2FO12/61R-PBB06?A2FO16/61R-PAB06?A2FO16/61R-PBB06?

A2FO23/61R-PAB05?A2FO23/61R-PBB05?A2FO28/61R-PAB05?

A2FO28/61R-PBB05?A2FO32/61R-PAB05?A2FO32/61R-PBB05?

A2FO45/61R-PZB05?A2FO56/61R-PAB05?A2FO56/61R-PBB05?

A2FO63/61R-PAB05?A2FO63/61R-PBB05?A2FO80/61R-PAB05?

A2FO80/61R-PBB05?A2FO90/61R-PAB05?A2FO90/61R-PBB05?

A2FO107/61R-PAB05?A2FO107/61R-PBB05?A2FO125/61R-PAB05?

A2FO125/61R-PBB05?A2FO160/61R-PAB05?A2FO160/61R-PBB05?

A2FO180/61R-PAB05?A2FO180/61R-PBB05?A2FO200/63R-PAB05

A2FM定容量?液壓馬達(dá)?

A2FM32/61W-VAB010?A2FM32/61W-VAB020?A2FM32/61W-VAB040?

A2FM32/61W-VBB010?A2FM32/61W-VBB020?A2FM32/61W-VBB040?

A2FM45/61W-VZB010?A2FM45/61W-VZB020?A2FM45/61W-VZB040?

A2FM56/61W-VAB010?A2FM56/61W-VAB020?A2FM56/61W-VAB040?

A2FM56/61W-VBB010?A2FM56/61W-VBB020?A2FM56/61W-VBB040?

A2FM63/61W-VAB010?A2FM63/61W-VAB020?A2FM63/61W-VAB040?

A2FM63/61W-VBB010?A2FM63/61W-VBB020?A2FM63/61W-VBB040?

A2FM80/61W-VAB010?A2FM80/61W-VAB020?A2FM80/61W-VBB010?

A2FM80/61W-VBB020?A2FM90/61W-VAB010?A2FM90/61W-VAB020?

A2FM90/61W-VBB010?A2FM90/61W-VBB020?A2FM107/61W-VAB010?

A2FM107/61W-VAB020?A2FM107/61W-VBB010?A2FM107/61W-VBB020?

A2FM125/61W-VAB010?A2FM125/61W-VAB020?A2FM125/61W-VBB010?

A2FM125/61W-VBB020?A2FM160/61W-VAB010?A2FM160/61W-VAB020?

A2FM160/61W-VBB010?A2FM160/61W-VBB020?A2FM180/61W-VAB010?

A2FM180/61W-VAB020?A2FM180/61W-VBB010?A2FM180/61W-VBB020?

A2FM200/63W-VAB010?A2FM250/60W-VZB010?A2FM250/60W-VZB020?

A2FM355/60W-VZH010?A2FM500/60W-VPH010?A2FM500/60W-VZH010?

A2FLM710/60W-VPH010?A2FLM710/60W-VZH010?A2FM1000/60W-VPH010?

A2FM1000/60W-VZH010

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