力士樂Rexroth柱塞泵現(xiàn)貨
- 型 號:A10VS071DFR1/32R-VPB22U99
- 價(jià) 格:¥11500
力士樂Rexroth柱塞泵現(xiàn)貨我司主營氣動(dòng)元件、液壓泵閥、電子電控類進(jìn)口件:主要涵蓋產(chǎn)品有:換向閥,氣缸等;液壓泵、液壓閥,液壓元件等;滑塊、導(dǎo)軌;電控模塊、驅(qū)動(dòng)器;伺服電機(jī)等主營優(yōu)勢品牌有AVENTICS,DUPLOMATIC,REXROTH,B&R,AIRTEC,Bently,ASCO,ATOS,VICKERS,Parker等
力士樂Rexroth柱塞泵現(xiàn)貨
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)的場合,諸如液壓機(jī)、工程機(jī)械和船舶中。
中文名柱塞泵機(jī)械分類單柱塞泵機(jī)械分類臥式柱塞泵機(jī)械分類軸向柱塞泵機(jī)械分類徑向柱塞泵廣泛應(yīng)用高壓、大流量和流
力士樂Rexroth柱塞泵現(xiàn)貨
作為變速箱和液壓系統(tǒng)的制造商,傳動(dòng)和控制專家力士樂為風(fēng)機(jī)制造商提供系統(tǒng)解決方案.
博世力士樂是的傳動(dòng)與控制技術(shù)專家。憑借在傳動(dòng)、控制以及行走機(jī)械領(lǐng)域內(nèi)的豐富經(jīng)驗(yàn),博世力士樂為80多個(gè)國家,
50多萬家客戶提供量身定制的解決方案,是世界工業(yè)及工廠自動(dòng)化、行走機(jī)械應(yīng)用與可再生能源應(yīng)用市場上的*。
2008年博世力士樂銷售額近59億歐元,擁有超過35,300多名專業(yè)員工。
自1978年開始,博世力士樂就開始了在中國的業(yè)務(wù),并在上海、北京、常州和深圳建立了工廠。
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;
授權(quán)代理銷售BOSCH-REXROTH博士-力士樂液壓元件電子單元,壓力開關(guān),壓力繼電器,液壓馬達(dá),齒輪泵,減壓閥,換向閥,葉片泵,電磁閥,
變量泵,先導(dǎo)式減壓閥,柱塞泵,電磁閥,疊加閥,溢流閥,比例閥...
定量泵是種工作時(shí)可以實(shí)現(xiàn)每轉(zhuǎn)的理論排量保持不變的泵設(shè)備,它的使用使得鎂合金熔化、保溫熔爐工作更具效率,那么定量泵工作原理是怎樣實(shí)現(xiàn)的呢?
定量泵工作原理
在轉(zhuǎn)速恒定的條件下,輸出流量可變的為變量泵,反之為定量泵。他們最大的不同就是變量泵的軸是偏心安裝。簡單來說定量泵的轉(zhuǎn)速選定后,他的流量就不能調(diào)節(jié)。變量泵的輸出流量可以根據(jù)系統(tǒng)的壓力變化,自動(dòng)地調(diào)節(jié)流量,就是壓力高時(shí)輸出流量小,壓力低時(shí)輸出流量大。這樣他可以節(jié)省液壓元件的數(shù)量,從而簡化了油路系統(tǒng),而且可以減少油發(fā)熱。缺點(diǎn)是流量脈動(dòng)嚴(yán)重,系統(tǒng)壓力不太平穩(wěn),泵的壽命短,泵的軸承容易壞,因?yàn)樗瞧陌惭b,而且泵的嘈音大。
葉片泵通過調(diào)節(jié)偏心距、柱塞泵通過調(diào)節(jié)滑板角度可以實(shí)現(xiàn)變量。定量泵工作時(shí)利用隔膜前后動(dòng)作使隔膜與泵頭間變化造成球閥上下移動(dòng)形成真空吸附與推擠現(xiàn)象達(dá)到液體輸送之目的。當(dāng)膜片往后拉時(shí),出口球閥掉下與球座緊緊密合,入口球閥因膜片后拉時(shí)與泵頭間產(chǎn)生真空而往上浮起,液體跟著被吸上來。當(dāng)膜片往前推時(shí),入口球閥與球座氣密,使液體不會通過,而出口因膜片往前推擠使球閥開啟,液體吐出。
A10VSO71DFR1/32R-VPB22U99S2184
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力士樂柱塞泵是液壓系統(tǒng)之中的重要設(shè)備。它依靠柱塞在缸體之中的往復(fù)運(yùn)動(dòng),改變密封工作腔的容積,實(shí)現(xiàn)吸油和油壓。力士樂柱塞泵具有額定壓力高、結(jié)構(gòu)緊湊、效率高、流量調(diào)節(jié)方便等優(yōu)點(diǎn)。
1、無論力士樂柱塞泵是采用坐安裝還是法蘭安裝方法,基礎(chǔ)支座均應(yīng)具有足夠的剛性.
2、驅(qū)動(dòng)軸(如電機(jī)軸)與泵軸之間的同軸度《0.05mm,可用千分表找正。
3、盡量避免使用帶、鏈條齒輪等帶動(dòng)泵,因?yàn)榇藭r(shí)力士樂柱塞泵受徑向載荷。
4、安裝在油箱上的液壓泵的中心高至油面的距離不大于500mm,吸入壓力應(yīng)在(-16.7-0.5)*10Pa。否則力士樂柱塞泵難以自吸而產(chǎn)生氣穴現(xiàn)象。高真空度將會造成吸空零件磨損,并產(chǎn)生噪聲、振動(dòng)等故障。
5、原則上吸油管不推薦安裝過濾器,而只在力士樂柱塞泵的出口則裝過濾精度為25Mpa的管路濾油器,液壓泵最好安裝在油箱旁邊,采用倒灌吸油。
6、當(dāng)向力士樂柱塞油泵上安裝聯(lián)軸器時(shí),不能用力敲擊泵軸,往往在泵軸上有專門用來安裝聯(lián)軸器的工藝螺紋,可以用它來將聯(lián)軸器壓入泵軸。
德國REXROTH力士樂斜式柱塞泵31R系列常規(guī)備貨*出售
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力士樂柱塞泵復(fù)運(yùn)動(dòng),從而完成泵油任務(wù),泵油過程可分為以下三個(gè)階段。
進(jìn)油過程當(dāng)凸輪的凸起部分轉(zhuǎn)過去后,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。
供油過程當(dāng)凸輪軸轉(zhuǎn)到凸輪的凸起部分頂起滾輪體時(shí),柱塞彈簧被壓縮,柱塞向上運(yùn)動(dòng),燃油受壓,一部分燃油經(jīng)油孔流回噴油泵上體油腔。當(dāng)柱塞頂面遮住套筒上進(jìn)油孔的上緣時(shí),由于柱塞和套筒的配合間隙很小(0.0015-0.0025mm)使柱塞頂部的泵油室成為一個(gè)密封油腔,柱塞繼續(xù)上升,泵油室內(nèi)的油壓迅速升高,泵油壓力 出油閥彈簧力+高壓油管剩余壓力時(shí),推開出油閥,高壓柴油經(jīng)出油閥進(jìn)入高壓油管,通過噴油器噴入燃燒室。
回油過程柱塞向上供油,當(dāng)上行到柱塞上的斜槽(停供邊)與套筒上的回油孔相通時(shí),泵油室低壓油路便與柱塞頭部的中孔和徑向孔及斜槽溝通,油壓驟然下降,出油閥在彈簧力的作用下迅速關(guān)閉,停止供油。此后柱塞還要上行,當(dāng)凸輪的凸起部分轉(zhuǎn)過去后,在彈簧的作用下,柱塞又下行。此時(shí)便開始了下一個(gè)循環(huán)。
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我們知道柱塞泵可以分為變量泵和定量泵,為了滿足客戶隨時(shí)調(diào)整排量的需求,從未停止過變量泵的研發(fā)??刂浦脤?shí)現(xiàn)變量的目的是控制泵速或調(diào)節(jié)泵排量。當(dāng)通過改變液壓泵的排量V(幾何參數(shù))來調(diào)節(jié)流量時(shí),當(dāng)泵的轉(zhuǎn)速不變時(shí),泵的排出流量發(fā)生變化,從而形成流量控制泵。
變量柱塞泵有什么特點(diǎn)?
1、閉環(huán)液壓傳動(dòng)用斜盤型軸向柱塞變量泵;
2、流量與驅(qū)動(dòng)速度和排量成正比,可以無限變化;
3、流量隨著斜盤的擺動(dòng)角度從零增加到峰值。
4、通過在中間位置擺動(dòng)斜盤,可以平穩(wěn)地改變液體流動(dòng)的方向。
5、易于與各種控制和調(diào)節(jié)系統(tǒng)匹配的多變量模式;
6、泵在高壓油側(cè)配有兩個(gè)溢流閥,以保護(hù)靜液壓傳動(dòng)裝置(泵和馬達(dá))免受過載;
7、高壓溢流閥還具有補(bǔ)油閥的功能;
8、內(nèi)置輔助泵用作補(bǔ)給泵和控制泵;
9、高補(bǔ)給壓力受到內(nèi)置補(bǔ)給溢流閥的限制;
10、整個(gè)系列都有內(nèi)置壓力切斷閥。力士樂變量柱塞泵的控制方法和特點(diǎn)與上述基本相同。
A10VSO28DFR1(DR)/31R-PPA12N00
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A10VSO100DR/31R-PPA12N00
1.泵的軸線與電機(jī)的軸線虛保持一定的同軸度。對于齒輪泵,泵的轉(zhuǎn)動(dòng)軸與電機(jī)輸出軸之間的安裝采用彈性聯(lián)軸節(jié),其不同軸度不得大于O.1mm,采用軸套式聯(lián)軸節(jié)的不同軸度不得大于0.05mm;對于葉片泵,一般要求不同軸度不得大于0.1mm,且與電機(jī)之間應(yīng)采用撓性連接;同樣對于斜盤式軸向安裝精度也提出具體要求:
(1)支座安裝的斜盤式軸向泵,其同軸度檢查允差事=0.1mm;
(2)采用法蘭安裝時(shí),安裝精度要求其芯軸徑向法蘭同軸度檢查公差為西=0.1mm:法蘭垂直度檢查允差t=0.1mm;
(3)采用軸承支架安裝皮帶輪或齒輪,然后通過彈性聯(lián)軸節(jié)與泵聯(lián)接,來保證泵的主動(dòng)軸不承受徑向力和軸向力??梢栽试S承受的力應(yīng)嚴(yán)格控制在許用范圍內(nèi),特殊情況下還要對轉(zhuǎn)子進(jìn)行精密的動(dòng)平衡實(shí)驗(yàn),以盡量避免共振。
2.濾器的安裝
為避免泵抽空,嚴(yán)禁使用精密過濾器。對于齒輪泵的過濾精度應(yīng)≤40um,在吸油口常用網(wǎng)式過濾器。對于葉片泵,柱塞泵,油液的清潔度應(yīng)達(dá)到國家標(biāo)準(zhǔn)等級16/19級,使用的過濾器精度大多為25~30um。吸油口過濾器的正確選擇和安裝,會使液壓故障明顯減少,各元件的使用壽命可大大延長?!?/p>
3.配管的安裝要求
(1)進(jìn)油管的安裝高度不得大于O.5m。進(jìn)油管必須清洗干凈,與泵進(jìn)油口配合的油泵緊密結(jié)合,必要時(shí)可加上密封膠,以免空氣進(jìn)入液壓系統(tǒng)中。
(2)進(jìn)油管道的彎頭不宜過多,進(jìn)油管道口應(yīng)接有過濾器,過濾器不允許漏出油箱的油面。當(dāng)泵正常運(yùn)轉(zhuǎn)后,其油面離過濾器頂面至少應(yīng)有100mm,以免空氣進(jìn)入,過濾器的有效通油面積一般不低于泵進(jìn)油口油管的橫截面積的50倍,并且過濾器應(yīng)經(jīng)常清洗,以免堵塞。(3)吸入管,壓出管和回油管的通徑不應(yīng)小于規(guī)定值。
(4)泵的泄漏回油管不宜與液壓系統(tǒng)其他回油管聯(lián)在一起,應(yīng)單獨(dú)并插入油箱液面以下。
(5)為了防止泵的振動(dòng)和噪聲沿管道傳至系統(tǒng),在泵的吸入口和壓出口可各安裝一段軟管,但壓出口軟管應(yīng)垂直安裝,長度不應(yīng)超過400~600mm,吸入口軟管要有一定的強(qiáng)度,避免由于管內(nèi)有真空度而使其出現(xiàn)變扁現(xiàn)象。