?優(yōu)勢溢流閥DB30-2-52/350

武穴黎翔機電設備有限公司，詢價聯(lián)系人：何女士

詢價電話：0713-6542758，手機：18934630908????

詢價傳真：0713-6542758

詢價QQ:?736567721,704552157

現(xiàn)貨特價型號：R900925687?4WRAE10W1-30-22/G24N9K31/F1V??2臺

D634-371C?R24K02MONSS2????3臺DG4V-3-6C-M-U-H7-60????10臺

DG4V-3-2N-M-U-H7-60????15臺DG4V-3-2A-M-U-H7-60????10臺

由于換向結(jié)構的特殊性，使得用戶在實現(xiàn)某一功能時必須購買相應的液壓元件，再加上工程機械廠家會根據(jù)不同最終用戶要求設計出相應的功能，這樣會造成生產(chǎn)廠家采購同類、多規(guī)格的液壓控制元件來滿足不同功能要求的需要，不利于產(chǎn)品通用化及產(chǎn)品管理，同時會大大提高產(chǎn)品成本。?

　　?（3）由于執(zhí)行機構進出液壓油通過一根閥芯進行控制，單獨控制執(zhí)行機構兩側(cè)壓力是不可能的。因此，出油側(cè)背壓作用于執(zhí)行機構運動的反方向，隨著出油側(cè)背壓升高，為保質(zhì)執(zhí)行機構的運動，必須提高進油側(cè)壓力。這樣會使得液壓系統(tǒng)消耗的功能增加，效率低，發(fā)熱增加。?

　　?采用雙閥芯技術的液壓系統(tǒng)，由于執(zhí)行機構進出油側(cè)閥口閥芯位置及控制方式各自獨立，互不影響，這樣通過對兩閥芯控制方式的不同組合，利用軟件編程能很好解決傳統(tǒng)單閥系統(tǒng)不能解決的問題，同時還可以輕易實現(xiàn)傳統(tǒng)液壓系統(tǒng)中難以實現(xiàn)的功能。?

2、雙閥芯換向閥的兩種基本控制策略?

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　　?由于雙閥芯換向兩油口控制的靈活性，兩油口可分別采取流量控制、壓力控制或流量壓力控制。正面介紹兩種簡單的控制策略。?

（1）負載方向在整個工作過程中保持不變?

DKE-1631/2?24DC?

?DKER-1711

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DKE-1631/2-X24DC+SP667?

??DKE-1611-X?24DC

?DKOR-1611/A-X?24DC,　

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DKOR-1671-X?24DC,　

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SDHI-0631/2/A-X?24DC,

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　SDHI-0639/C-X?24DC?23,

　SDHI-0639/O-X?230/50/60AC?23,　

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SDHI-0710-X?230/50/60AC?23,　

SDHI-0711-X?12DC?23,　

SDPHI-2711/1/D-X?24DC?31

,SDPHI-2711/D-X?24DC,

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SDPHI-27191/D-X?24DC,　

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SDPHI-3713/E-X?230/50/60AC?53,

　SDPHI-3713/E-X?24DC?53,

SDPHI-3713-X?24DC?53,　

SDPHI-3714/8/DE-X?24DC,　

SDPHI-3714/8/E-X?24DC,　

SDPHI-3714/DE-X?24DC

?DPHI-1614/AD-X?24DC,

　　?我們知道，對于汽車起重機、挖掘機、裝載機等而言，其液壓缸在整個工作過程中負載方向始終維持不變。下面以起重機變幅液壓缸為例來探討雙閥芯的控制策略。?

　　?起重機變幅缸在工作過程中其受力，負載方向始終保持不變，因此我們可以采取液壓缸有桿控用壓力控制、無桿腔用流量控制的控制策略。?

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4個閥固定孔

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