Rexroth，力士樂液壓泵，力士樂REXROTH
Rexroth 柱塞泵根據(jù)傾斜元件的不同，有斜盤式和斜軸式兩種。斜盤式是斜盤相對回轉(zhuǎn)的缸體有一傾斜角度，而引起柱塞在泵缸中往復(fù)運(yùn)動。傳動軸軸線和缸體軸線是一致的。這種結(jié)構(gòu)較簡單，轉(zhuǎn)速較高，但工作條件要求高，柱塞端部與斜盤的接觸部往往是薄弱環(huán)節(jié)。斜軸式的斜盤軸線與傳動軸軸線是一致的。它是由于柱塞缸體相對傳動軸傾斜一角度而使柱塞作往復(fù)運(yùn)動。流量調(diào)節(jié)依靠擺動柱塞缸體的角度來實(shí)現(xiàn)，故有的又稱擺缸式。它與斜盤式相比，工作可靠，流量大，但結(jié)構(gòu)復(fù)雜。
Rexroth 軸向柱塞泵與徑向柱塞泵比較，排出壓力高，它一般可在20～50MPa范圍內(nèi)工作，效率也高，徑向尺寸小、結(jié)構(gòu)緊湊、體積小、重量輕。但結(jié)構(gòu)較徑向柱塞泵復(fù)雜，加工制造要求高，價(jià)格較貴。
軸向柱塞泵一般用于機(jī)床、冶金、鍛壓、礦山及起重機(jī)械的液壓傳動系統(tǒng)中，特別廣泛地應(yīng)用于大功率的液壓傳動系統(tǒng)中。為了提高效率，在應(yīng)軸向柱塞泵一般都由缸體、配油盤、柱塞和斜盤等主要零件組成。缸體內(nèi)有多個柱塞，柱塞是軸向排列的，即柱塞的中心線平行于傳動軸的軸線，因此稱它為軸向柱塞泵。但它又不同于往復(fù)式柱塞泵，因?yàn)樗闹粌H在泵缸內(nèi)做往復(fù)運(yùn)動，而且柱塞和泵缸與斜盤相對有旋轉(zhuǎn)運(yùn)動。柱塞以一球形端頭與斜盤接觸。在配油盤上有高低壓月形溝槽，它們彼此由隔墻隔開，保證一定的密封性，它們分別與泵的進(jìn)油口和出油口連通。斜盤的軸線與缸體軸線之間有一傾斜角度。油泵A4VS071DR/30R-PPB13N00
德國力士樂A4VG-125泵的配件主軸080121-001#
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A4VS071DR/22R-PPB13NOORexroth，力士樂液壓泵，力士樂REXROTH
軸向柱塞泵的工作原理所示，當(dāng)電動機(jī)帶動傳動軸旋轉(zhuǎn)時，泵缸與柱塞一同旋轉(zhuǎn)，柱塞頭永遠(yuǎn)保持與斜盤接觸，因斜盤與缸體成一角度，因此缸體旋轉(zhuǎn)時，柱塞就在泵缸中做往復(fù)運(yùn)動。以圖l—40的下一柱塞為例，它從0°轉(zhuǎn)到180°，即轉(zhuǎn)到上面柱塞的位置，柱塞缸容積逐漸增大，因此液體經(jīng)配油盤的吸油口a吸人油缸；而該柱塞從180°轉(zhuǎn)到360°時，柱塞缸容積逐漸減小，因此油缸內(nèi)液體經(jīng)配油盤的出口排出液體。只要傳動軸不斷旋轉(zhuǎn)，泵便不斷地工作。
改變傾斜元件的角度，就可以改變柱塞在泵缸內(nèi)的行程長度，即可改變泵的流量。傾斜角度固定的稱為定量泵，傾斜角度可以改變的便稱為變量泵。
力士樂REXROTH液壓泵，銷售力士樂液壓泵，博世力士樂一級代理，廣東代理力士樂液壓泵