上海明豐倉庫大量現(xiàn)貨---博世力士樂中國總代理

液壓的定義:一個(gè)完整的液壓系統(tǒng)由五個(gè)部分組成，即動(dòng)力元件、執(zhí)行元件、控制元件、輔助元件和液壓油。動(dòng)力元件的作用是將原動(dòng)機(jī)的機(jī)械能轉(zhuǎn)換成液體的壓力能，指液壓系統(tǒng)中的油泵，它向整個(gè)液壓系統(tǒng)提供動(dòng)力。液壓泵的結(jié)構(gòu)形式一般有齒輪泵、葉片泵和柱塞泵。執(zhí)行元件(如液壓缸和液壓馬達(dá))的作用是將液體的壓力能轉(zhuǎn)換為機(jī)械能，驅(qū)動(dòng)負(fù)載作直線往復(fù)運(yùn)動(dòng)或回轉(zhuǎn)運(yùn)動(dòng)。 控制元件(即各種液壓閥)在液壓系統(tǒng)中控制和調(diào)節(jié)液體的壓力、流量和方向。根據(jù)控制功能的不同，液壓閥可分為壓力控制閥、流量控制閥和方向控制閥。壓力控制閥又分為溢流閥(安全閥)、減壓閥、順序閥、壓力繼電器等；流量控制閥包括節(jié)流閥、調(diào)整閥、分流集流閥等；方向控制閥包括單向閥、液控單向閥、梭閥、換向閥等。根據(jù)控制方式不同，液壓閥可分為開關(guān)式控制閥、定值控制閥和比例控制閥。 輔助元件包括油箱、濾油器、油管及管接頭、密封圈、壓力表、油位油溫計(jì)等。 液壓油是液壓系統(tǒng)中傳遞能量的工作介質(zhì)，有各種礦物油、乳化液和合成型液壓油等幾大類。
液壓元件：
　　液壓元件中可分為動(dòng)力元件和控制元件以及執(zhí)行元件三大類。盡管都是液壓元件，它們的自身功能和安裝裝使用的技術(shù)要求也不盡相同，現(xiàn)分別介紹如下：
　　一、什么是動(dòng)力元件？
　　動(dòng)力元件指的是各種液壓泵。
　　1、齒輪油泵和串聯(lián)泵（包括外嚙合與內(nèi)嚙合）兩種結(jié)構(gòu)型式。
　　2、葉片油泵（包括單級泵、變量泵、雙級泵、雙聯(lián)泵）。
　　3、柱塞油泵，又分為軸向柱塞油泵和徑向柱塞油泵，軸向柱塞泵有定量泵、變量泵、（變
　　量泵又分為手動(dòng)變量與壓力補(bǔ)償變量、伺服變量等多種）從結(jié)構(gòu)上又分為端面配油和閥式配油油兩種配油方式，而徑向柱塞泵的配油型式，基本上為閥式配油。
　　液壓元件分類
　　動(dòng)力元件：齒輪泵、葉片泵、柱塞泵、螺桿泵；
　　執(zhí)行元件：液壓缸、活塞液壓缸、柱塞液壓缸、擺動(dòng)液壓缸、組合液壓缸；
　　液壓馬達(dá)：齒輪式液壓馬達(dá)、葉片液壓馬達(dá)、柱塞液壓馬達(dá)；
　　控制元件：方向控制閥、單向閥、換向閥；
　　壓力控制閥：溢流閥、減壓閥、順序閥、壓力繼電器等；
　　流量控制閥：節(jié)流閥、調(diào)速閥、分流閥；
　　輔助元件：蓄能器、過濾器、冷卻器、加熱器、油管、管接頭、油箱、壓力計(jì)、流量計(jì)、密封裝置等；

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