力士樂A4V,A10V,A11V系列柱塞泵，德國(guó)REXROTH軸向柱塞泵

力士樂變量軸向柱塞泵分類：按軸分類有:直軸，斜軸，通軸，不通軸  按配油形式有:平面配流，軸配流，閥配流其工作原理都是柱塞往復(fù)運(yùn)動(dòng)實(shí)現(xiàn)吸油和壓油動(dòng)作。  通過(guò)配流零件保證吸油區(qū)與壓油區(qū)分隔開，不串通常用的有1，CY14-1B柱塞泵，其主要結(jié)構(gòu)特征是：不通軸，直軸，平面配流盤配流，斜盤變量結(jié)構(gòu)。              2，A6F斜軸泵（力士樂系列），其主要結(jié)構(gòu)特征是：斜軸，不通軸，平面配流，斜盤固定，缸體配流盤擺動(dòng)變量。             3，A4V通軸泵（力士樂系列），其主要結(jié)構(gòu)特征是：通軸，直軸，平面配流盤配流，斜盤變量結(jié)構(gòu)，尾部可串接1-4臺(tái)合適的通軸泵。可集成液壓系統(tǒng)的*控制閥功能。            詳細(xì)結(jié)構(gòu)請(qǐng)參閱相關(guān)資料，網(wǎng)上也有。            柱塞泵特點(diǎn)：壓力等級(jí)高，可實(shí)現(xiàn)復(fù)雜的變量控制，可組成復(fù)雜的液壓系統(tǒng)。           像一般的水泵多數(shù)采用葉輪離心作用出水，但高壓水泵一般多是閥配流的柱塞泵，壓力可達(dá)到
柱塞泵是液壓系統(tǒng)的一個(gè)重要裝置。它依靠柱塞在缸體中往復(fù)運(yùn)動(dòng)，使密封工作容腔的容積發(fā)生變化來(lái)實(shí)現(xiàn)吸油、壓油。柱塞泵具有額定壓力高、結(jié)構(gòu)緊湊、效率高和流量調(diào)節(jié)方便等優(yōu)點(diǎn)，被廣泛應(yīng)用于高壓、大流量和流量需要調(diào)節(jié)的場(chǎng)合，諸如液壓機(jī)、工程機(jī)械和船舶中。
柱塞泵是往復(fù)泵的一種，屬于體積泵，其柱塞靠泵軸的偏心轉(zhuǎn)動(dòng)驅(qū)動(dòng)，往復(fù)運(yùn)動(dòng)，其吸入和排出閥都是單向閥。當(dāng)柱塞外拉時(shí)，工作室內(nèi)壓力降低，出口閥關(guān)閉，低于進(jìn)口壓力時(shí)，進(jìn)口閥打開，液體進(jìn)入；柱塞內(nèi)推時(shí)，工作室壓力升高，進(jìn)口閥關(guān)閉，高于出口壓力時(shí)，出口閥打開，液體排出。當(dāng)傳動(dòng)軸帶動(dòng)缸體旋轉(zhuǎn)時(shí)，斜盤將柱塞從缸體中拉出或推回，完成吸排油過(guò)程。柱塞與缸孔組成的工作容腔中的油液通過(guò)配油盤分別與泵的吸、排油腔相通。變量機(jī)構(gòu)用來(lái)改變斜盤的傾角，通過(guò)調(diào)節(jié)斜盤的傾角可改變泵的排量。
柱塞泵柱塞往復(fù)運(yùn)動(dòng)總行程L是不變的，由凸輪的升程決定。柱塞每循環(huán)的供油量大小取決于供油行程,供油行程不受凸輪軸控制是可變的。供油開始時(shí)刻不隨供油行程的變化而變化。轉(zhuǎn)動(dòng)柱塞可改變供油終了時(shí)刻，從而改變供油量。柱塞泵工作時(shí)，在噴油泵凸輪軸上的凸輪與柱塞彈簧的作用下，迫使柱塞作上、下往復(fù)運(yùn)動(dòng)，從而完成泵油任務(wù)，泵油過(guò)程可分為以下三個(gè)階段。
當(dāng)凸輪的凸起部分轉(zhuǎn)過(guò)去后，在彈簧力的作用下，柱塞向下運(yùn)動(dòng)，柱塞上部空間（稱為泵油室）產(chǎn)生真空度，當(dāng)柱塞上端面把柱塞套上的進(jìn)油孔打開后，充滿在油泵上體油道內(nèi)的柴油經(jīng)油孔進(jìn)入泵油室，柱塞運(yùn)動(dòng)到下止點(diǎn)，進(jìn)油結(jié)束。

力士樂A4V柱塞泵變量原理就是通過(guò)LS（負(fù)載敏感）來(lái)控制,當(dāng)執(zhí)行元件壓力變化時(shí),LS把執(zhí)行元件的壓力情況反饋給泵上的LS閥,LS閥給力士樂A4V柱塞泵變量泵里的柱塞施加壓力,改變斜盤的角度,從而實(shí)現(xiàn)變量.當(dāng)系統(tǒng)有多個(gè)執(zhí)行元件時(shí),取壓力zui大的執(zhí)行元件
變量泵的變量控制我知道的一般有兩種形式，1：電控；2液控。電控大多采用電比例信號(hào)控制比例閥的開口量，通過(guò)變量油缸從而改變斜盤角度達(dá)到變量目的。液控形式與電控原理沒有本質(zhì)區(qū)別。只是閥的控制形式改為液控。亦稱LS。有隨動(dòng)伺服的也有壓力反饋控制的。
部分型號(hào)，如有什么需要或疑問(wèn)可來(lái)電垂詢，謝謝合作！
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力士樂A4V,A10V,A11V系列柱塞泵，德國(guó)REXROTH軸向柱塞泵