產(chǎn)品名稱(chēng)：REXROTH齒輪泵
產(chǎn)品型號(hào)：
產(chǎn)品報(bào)價(jià)：
產(chǎn)品特點(diǎn)：rexroth齒輪泵是依靠泵缸與嚙合齒輪間所形成的工作容積變化和移動(dòng)來(lái)輸送液體或使之增壓的回轉(zhuǎn)泵。由兩個(gè)齒輪、泵體與前后蓋組成兩個(gè)封閉空間，當(dāng)齒輪轉(zhuǎn)動(dòng)時(shí)，齒輪脫開(kāi)側(cè)的空間的體積從小變大，形成真空，將液體吸首*首*首*首*首*首先進(jìn)入，rexroth齒輪泵齒輪嚙合側(cè)的空間的體積從大變小，而將液體擠首*首*首*首*首*首先進(jìn)入管路中去。吸首*首*首*首*首*首先進(jìn)入腔與排出腔是靠?jī)蓚€(gè)齒輪的嚙合線來(lái)隔開(kāi)的。齒輪泵的排出口的壓力*取決于泵出口處阻力的大小。
REXROTH齒輪泵的詳細(xì)資料：
| 品牌 | REXROTH/德國(guó)力士樂(lè) |
|---|
REXROTH齒輪泵
力士樂(lè)（Bosch Rexroth）為工業(yè)及工廠自動(dòng)化、預(yù)*預(yù)*預(yù)*預(yù)*預(yù)*預(yù)先進(jìn)行走機(jī)械、以及可再生能源等領(lǐng)域的客戶提供傳動(dòng)、控制與移動(dòng)解決方案；作為超過(guò)50萬(wàn)客戶的共同選擇，力士樂(lè)正不斷為客戶提供高質(zhì)量的電控、液壓、氣動(dòng)以及機(jī)電一體化元件和系統(tǒng)。
bosch rexroth不僅是*強(qiáng)公司，也是世界較有名高科技企業(yè)之一，50多年來(lái)，Bosch Rexroth集團(tuán)及Bosch Rexroth公司的業(yè)務(wù)部門(mén)致力于開(kāi)發(fā)專(zhuān)業(yè)型液壓傳動(dòng)領(lǐng)域高科技產(chǎn)品，其產(chǎn)品和品牌已享譽(yù)。 力士樂(lè)的產(chǎn)品是*的，因?yàn)樵诟鲊?guó)市場(chǎng)上，目前沒(méi)有其他的品牌能向顧客提供所有傳動(dòng)與控制技術(shù)，專(zhuān)門(mén)化與一體化并舉。正因如此，博世-力士樂(lè)在液壓傳動(dòng)、控制及移動(dòng)技術(shù)等領(lǐng)域成為了標(biāo)志性的榜樣。
是依靠泵缸與嚙合齒輪間所形成的工作容積變化和移動(dòng)來(lái)輸送液體或使之增壓的回轉(zhuǎn)泵。rexroth齒輪泵由兩個(gè)齒輪、泵體與前后蓋組成兩個(gè)封閉空間，當(dāng)齒輪轉(zhuǎn)動(dòng)時(shí)，齒輪脫開(kāi)側(cè)的空間的體積從小變大，形成真空，將液體吸首*首*首*首*首*首先進(jìn)入，rexroth齒輪泵齒輪嚙合側(cè)的空間的體積從大變小，而將液體擠首*首*首*首*首*首先進(jìn)入管路中去。吸首*首*首*首*首*首先進(jìn)入腔與排出腔是靠?jī)蓚€(gè)齒輪的嚙合線來(lái)隔開(kāi)的。齒輪泵的排出口的壓力*取決于泵出口處阻力的大小。
REXROTH齒輪泵優(yōu)缺點(diǎn)：
優(yōu)點(diǎn)：rexroth齒輪泵結(jié)構(gòu)簡(jiǎn)單緊湊、體積小、質(zhì)量輕、工藝性好、價(jià)格便宜、自吸力強(qiáng)、對(duì)油液污染不敏感、轉(zhuǎn)速范圍大、能耐沖擊性負(fù)載，維護(hù)方便、工作可靠。
缺點(diǎn)：rexroth齒輪泵徑向力不平衡、流動(dòng)脈動(dòng)大、噪聲大、效率低，零件的互換性差，磨損后不易修復(fù)，不能做變量泵用。
rexroth齒輪泵困油現(xiàn)象
原因：rexroth齒輪泵液壓油在漸開(kāi)線齒輪泵運(yùn)轉(zhuǎn)過(guò)程中，因齒輪相交處的封閉體積隨時(shí)間改變，常有一部分的液壓油被密封在齒間，如圖所示，稱(chēng)為困油現(xiàn)象，因液壓油不可壓縮將使外接齒輪產(chǎn)生極大的振動(dòng)和噪聲，影響系統(tǒng)正常工作。
困油現(xiàn)象
措施：rexroth齒輪泵在前后蓋板或浮動(dòng)軸套上開(kāi)卸荷槽，開(kāi)設(shè)卸荷槽的原則：兩槽間距為zui小閉死容積，而使閉死容積由大變小時(shí)與壓油腔相通，閉死容積由小變大時(shí)與吸油腔相通。
卸荷槽泄漏現(xiàn)象
rexroth齒輪泵的泄漏較大，外嚙合齒輪運(yùn)轉(zhuǎn)時(shí)泄漏途徑有以下三點(diǎn)：一為齒輪頂隙，其次為測(cè)隙，第三為嚙合間隙。
其中端面?zhèn)认缎孤┹^大，占總泄漏量的80%-85%，當(dāng)壓力增加時(shí)，前者不會(huì)改變，但后者撓度大增，此為外嚙合齒輪泵泄漏zui主要的原因，容積效率較低，故不適合用作高壓泵。
解決方法：端面間隙補(bǔ)償采用靜壓平衡措施，在齒輪和蓋板之間增加一個(gè)補(bǔ)償零件，如浮動(dòng)軸套、浮動(dòng)側(cè)板。
rexroth齒輪泵浮動(dòng)側(cè)板
受力不均衡現(xiàn)象
右側(cè)是壓油腔，rexroth齒輪泵左側(cè)是吸油腔，兩腔的壓力是不平衡的；另外壓油腔因齒頂泄漏，其壓力為遞減。兩不均衡壓力作用于齒輪和軸稱(chēng)徑向不平衡壓力，油壓越高，該力越大，加速軸承磨損，降低軸承壽命，使軸彎曲，加大齒頂與軸孔磨損。
防止措施：采用壓力平衡槽或縮小壓油腔。
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