產(chǎn)品詳情
PVQ13 MAR SSNS 20 C14D 1 2
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PLUG CM11/RM3/MVB15 PVH057R51AA10B252000001A E1AB01
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PVQ13 MAR SSNS 20 C14D 1 2
液壓閥輔助加工是一項(xiàng)復(fù)雜的系統(tǒng)工程,它涉及范圍非常廣泛,不但要從設(shè)備上提供保障,技術(shù)上不斷實(shí)踐、總結(jié)、提高。還要從管理上認(rèn)認(rèn)真真地去抓、去管,只有這樣才能將液壓閥的輔助加工搞上去,這里所涉及到的內(nèi)容只不過(guò)是一些粗淺的經(jīng)驗(yàn)之談,希望能夠?qū)?guó)產(chǎn)液壓閥輔助加工的質(zhì)量提高有所補(bǔ)益。
液壓閥分類(lèi)與原理
液壓閥: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。
壓力控制閥
按用途分為溢流閥﹑減壓閥和順序閥。
(1)溢流閥:能控制液壓系統(tǒng)在達(dá)到調(diào)定壓力時(shí)保持恆定狀態(tài)。用於過(guò)載保護(hù)的溢流閥稱(chēng)為安全閥。當(dāng)系統(tǒng)發(fā)生故障,壓力昇高到可能造成破壞的限定值時(shí),閥口會(huì)打開(kāi)而溢流,以保證系統(tǒng)的安全。
(2)減壓閥:能控制分支迴路得到比主迴路油壓低的穩(wěn)定壓力。減壓閥按它所控制的壓力功能不同,又可分為定值減壓閥(輸出壓力為恆定值)﹑定差減壓閥(輸入與輸出壓力差為定值)和定比減壓閥(輸入與輸出壓力間保持一定的比例)。
(3)順序閥:能使一個(gè)執(zhí)行元件(如液壓缸﹑液壓馬達(dá)等)動(dòng)作以后,再按順序使其他執(zhí)行元件動(dòng)作。油泵產(chǎn)生的壓力先推動(dòng)液壓缸1運(yùn)動(dòng),同時(shí)通過(guò)順序閥的進(jìn)油口作用在面積A 上,當(dāng)液壓缸1運(yùn)動(dòng)完全成后,壓力昇高,作用在面積A 的向上推力大於彈簧的調(diào)定值后,閥芯上昇使進(jìn)油口與出油口相通,使液壓缸2運(yùn)動(dòng)。
PVQ13 MAR SSNS 20 C14D 1 2