產(chǎn)品詳情
4WMM10E3X/F力士樂原裝手動閥現(xiàn)出售
一、力士樂液壓泵的能參數(shù)
力士樂液壓泵傳動系統(tǒng)中某處油液的壓力是由于受到各種形式負載的擠壓而產(chǎn)生的,壓力的大小決定于 負載,并隨負載變化而變化。當某處有幾個負載并聯(lián)時,壓 力的大小取決于克服負載的各個壓力值中的*小值。應別注意的是壓力建立的程是從無到有、從小到大迅速進行的。
工作壓力:力士樂液壓泵際工作時的輸出壓力稱為工作壓力。工作壓力取決于外負載的大小和排油管路上的壓力損失,而 與力士樂液壓泵的流無關。
額定壓力:力士樂液壓泵在正常工作條件下,按試驗標準規(guī)定連續(xù)運轉(zhuǎn)的*高壓力稱為力士樂液壓泵的額定壓力。 液體在通道中流動時,垂直于液體流動方向的通道截面稱為通流截面。單位時間內(nèi)流某通流截面的液體 體積稱為流,用符號q表示。 120L/min,d1=100mm,D1=150mm,d2=150mm。求二缸運動速度v1和v2。
另外,q1、 q2、q3是否相等? 排V排是泵主軸每轉(zhuǎn)一周所排出液體體積的理論值,如泵排 固定,則為定泵;排可變則為變泵。一般定泵因密 封較,泄漏小,在高壓時效率較高。
排與流的關系: q為泵單位時間內(nèi)排出的液體體積(L/min),有理論流 th和際流q ac 兩種。 界負載F=9720N,活塞有效工作面積A 1.3,選用定力士樂液壓泵的額定壓力為2.510 Pa,額定流為4.1710-4 試問此泵是否適用?如果泵的效率為0.8,驅(qū)動定力士樂液壓泵的電動機功率應為少?
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