国产一级a毛一级a看免费视频,久久久久久国产一级AV片,免费一级做a爰片久久毛片潮,国产精品女人精品久久久天天,99久久久无码国产精品免费了

REXROTH齒輪泵

力士樂（Bosch Rexroth）為工業及工廠自動化、行走機械、以及可再生能源等領域的客戶提供傳動、控制與移動解決方案；作為超過50萬客戶的共同選擇，力士樂正不斷為客戶提供高質量的電控、液壓、氣動以及機電一體化元件和系統。
bosch rexroth不僅是*強公司，也是世界*高科技企業之一，50多年來，Bosch Rexroth集團及Bosch Rexroth公司的業務部門致力于開發專業型液壓傳動領域高科技產品，其產品和品牌已享譽。 力士樂的產品是*的，因為在各國市場上，目前沒有其他的品牌能向顧客提供所有傳動與控制技術，專門化與一體化并舉。正因如此，博世-力士樂在液壓傳動、控制及移動技術等領域成為了標志性的榜樣。

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來輸送液體或使之增壓的回轉泵。rexroth齒輪泵由兩個齒輪、泵體與前后蓋組成兩個封閉空間，當齒輪轉動時，齒輪脫開側的空間的體積從小變大，形成真空，將液體吸入，rexroth齒輪泵齒輪嚙合側的空間的體積從大變小，而將液體擠入管路中去。吸入腔與排出腔是靠兩個齒輪的嚙合線來隔開的。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
優點：rexroth齒輪泵結構簡單緊湊、體積小、質量輕、工藝性好、價格便宜、自吸力強、對油液污染不敏感、轉速范圍大、能耐沖擊性負載，維護方便、工作可靠。
缺點：rexroth齒輪泵徑向力不平衡、流動脈動大、噪聲大、效率低，零件的互換性差，磨損后不易修復，不能做變量泵用。
rexroth齒輪泵困油現象
原因：rexroth齒輪泵液壓油在漸開線齒輪泵運轉過程中，因齒輪相交處的封閉體積隨時間改變，常有一部分的液壓油被密封在齒間，如圖所示，稱為困油現象，因液壓油不可壓縮將使外接齒輪產生極大的振動和噪聲，影響系統正常工作。
困油現象
措施：rexroth齒輪泵在前后蓋板或浮動軸套上開卸荷槽，開設卸荷槽的原則：兩槽間距為zui小閉死容積，而使閉死容積由大變小時與壓油腔相通，閉死容積由小變大時與吸油腔相通。
卸荷槽
泄漏現象
rexroth齒輪泵的泄漏較大，外嚙合齒輪運轉時泄漏途徑有以下三點：一為齒輪頂隙，其次為測隙，第三為嚙合間隙。
其中端面側隙泄漏較大，占總泄漏量的80%-85%，當壓力增加時，前者不會改變，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：端面間隙補償采用靜壓平衡措施，在齒輪和蓋板之間增加一個補償零件，如浮動軸套、浮動側板。
rexroth齒輪泵浮動側板
受力不均衡現象
右側是壓油腔，rexroth齒輪泵左側是吸油腔，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。
德國力士樂齒輪泵力士樂泵
PVV1-1X/018RA15RMB
 PVV1-1X/018RA15RVB
 PVV1-1X/018RA15UMB
 PVV1-1X/018RA15UVB
 PVV1-1X/018RJ15DMB
 PVV1-1X/018RJ15RMB
 PVV1-1X/018RJ15LMB
 PVV1-1X/018RJ15UMB
 PVV1-1X/018LA15DMB
 PVV1-1X/018LA15UMB
 PVV1-1X/027RA15DMB
 PVV1-1X/027RA15DVB
 PVV1-1X/027RA15RMB
 PVV1-1X/027RA15LMB
 PVV1-1X/027RA15UMB
 PVV1-1X/027RA15UVB
 PVV1-1X/027RJ15DMB
 PVV1-1X/027RJ15DVB
 PVV1-1X/027RJ15LMB
 PVV1-1X/027RJ15UMB
 PVV1-1X/027LA15LMB
 PVV1-1X/027LA15UMB
 PVV1-1X/027LJ15LMB
 PVV1-1X/036RA15DMB
 PVV1-1X/036RA15DVB
 PVV1-1X/036RA15RMB
 PVV1-1X/036RA15LMB
 PVV1-1X/036RA15UMB
 PVV1-1X/036RA15UVB
 PVV1-1X/036RJ15DMB
 PVV1-1X/036RJ15DVB
 PVV1-1X/036RJ15RMB
 PVV1-1X/036RJ15UMB
 PVV1-1X/036LA15UMB
 PVV1-1X/040RA15DMB
 PVV1-1X/040RA15RMB
 PVV1-1X/040RA15UMB
 PVV1-1X/040RA15UVB
 PVV1-1X/040RJ15DMB
 PVV1-1X/040RJ15UMB
 PVV1-1X/040LA15UMB
 PVV1-1X/046RA15DMB
 PVV1-1X/046RA15DVB
 PVV1-1X/046RA15RVB
 PVV1-1X/046RA15UMB
 PVV1-1X/046RA15UVB
 PVV1-1X/046RJ15DMB
 PVV1-1X/046RJ15UMB
 PVV1-1X/046RJ15UVB
 PVV2-1X/040RA15DMB
 PVV2-1X/040RA15LMB
 PVV2-1X/040RA15UMB
 PVV2-1X/040RA15UVB
 PVV2-1X/040RJ15DMB
 PVV2-1X/040RJ15UMB
 PVV2-1X/045RA15DMB
 PVV2-1X/045RA15DVB
 PVV2-1X/045RA15RMB
 PVV2-1X/045RA15LMB
 PVV2-1X/045RA15UMB
 PVV2-1X/045RA15UVB
 PVV2-1X/045RJ15DMB
 PVV2-1X/045RJ15UMB
 PVV2-1X/045LA15UMB
 PVV2-1X/055RA15DMB
 PVV2-1X/055RA15DVB
 PVV2-1X/055RA15RMB
 PVV2-1X/055RA15RVB
 PVV2-1X/055RA15LMB
 PVV2-1X/055RA15UMB
 PVV2-1X/055RA15UVB
 PVV2-1X/055RB15DMB
 PVV2-1X/055RJ15DMB
 PVV2-1X/055RJ15RMB
 PVV2-1X/055RJ15UMB
 PVV2-1X/055LA15DMB
 PVV2-1X/055LA15UMB
 PVV2-1X/060RA15DMB
 PVV2-1X/060RA15DVB
 PVV2-1X/060RA15RMB
 PVV2-1X/060RA15RVB
 PVV2-1X/060RA15LMB
 PVV2-1X/060RA15UMB
 PVV2-1X/060RA15UVB
 PVV2-1X/060RB15DMB
 PVV2-1X/060RJ15DMB
 PVV2-1X/060RJ15LMB
 PVV2-1X/060RJ15UMB
 PVV2-1X/060LA15DMB
 PVV2-1X/060LA15LVB
 PVV2-1X/060LA15UMB
 PVV2-1X/068RA15DMB
 PVV2-1X/068RA15DVB
 PVV2-1X/068RA15RMB
 PVV2-1X/068RA15LMB
 PVV2-1X/068RA15UMB
 PVV2-1X/068RA15UVB
 PVV2-1X/068RB15DMB
 PVV2-1X/068RB15UMB
 PVV2-1X/068RJ15DMB
 PVV2-1X/068RJ15LMB
 PVV2-1X/068RJ15UMB
 PVV2-1X/068RJ15UVB
 PVV2-1X/068LA15DMB
 PVV2-1X/068LA15UVB
 PVV2-1X/068LB15DMB
 PVV2-1X/068LJ15UMB
 PVV4-1X/069RA15DMC
 PVV4-1X/069RA15LMC
 PVV4-1X/069RA15UMC
 PVV4-1X/069RB15RMC
 PVV4-1X/069RB15RVC
 PVV4-1X/069RB15UMC
 PVV4-1X/069RJ15DMC
 PVV4-1X/069RJ15UMC
 PVV4-1X/069LA15DMC
 PVV4-1X/069LA15DVC
 PVV4-1X/082RA15DMC
 PVV4-1X/082RA15DVC
 PVV4-1X/082RA15RMC
 PVV4-1X/082RA15RVC
 PVV4-1X/082RA15LMC
 PVV4-1X/082RA15UMC
 PVV4-1X/082RA15UVC
 PVV4-1X/082RB15DMC
 PVV4-1X/082RB15UMC
 PVV4-1X/082RB15UVC
 PVV4-1X/082RJ15DMC
 PVV4-1X/082RJ15UMC
 PVV4-1X/082LA15DMC
 PVV4-1X/082LA15DVC
 PVV4-1X/082LA15LVC
 PVV4-1X/082LA15UMC
 PVV4-1X/082LJ15UMC
 PVV4-1X/098RA15DMC
 PVV4-1X/098RA15DVC
 PVV4-1X/098RA15RMC
 PVV4-1X/098RA15RVC
 PVV4-1X/098RA15LMC
 PVV4-1X/098RA15UMC
 PVV4-1X/098RA15UVC
 PVV4-1X/098RB15DMC
 PVV4-1X/098RB15UMC
 PVV4-1X/098RJ15DMC
 PVV4-1X/098RJ15UMC
 PVV4-1X/098LA15RMC
 PVV4-1X/098LA15UMC
 PVV4-1X/098LA15UVC
 PVV4-1X/113RA15DMC
 PVV4-1X/113RA15DVC
 PVV4-1X/113RA15LVC
 PVV4-1X/113RA15UMC
 PVV4-1X/113RA15UVC
 PVV4-1X/113RB15DMC
 PVV4-1X/113RB15RMC
 PVV4-1X/113RJ15DMC
 PVV4-1X/113RJ15UMC
 PVV4-1X/113LA15UMC
 PVV4-1X/122RA15DMC
 PVV4-1X/122RA15DVC
 PVV4-1X/122RA15RMC
 PVV4-1X/122RA15LMC
 PVV4-1X/122RA15UMC
 PVV4-1X/122RB15DMC
 PVV4-1X/122RJ15DMC
 PVV4-1X/122RJ15DVC
 PVV4-1X/122RJ15UMC
 PVV4-1X/122LA15DMC
 PVV4-1X/122LA15LMC
 PVV4-1X/122LA15UMC
 PVV4-1X/122LJ15DMC
 PVV4-1X/122LJ15UMC
 PVV5-1X/139RA15DMC
 PVV5-1X/139RA15DVC
 PVV5-1X/139RA15RVC
 PVV5-1X/139RA15LMC
 PVV5-1X/139RA15UMC
 PVV5-1X/139RA15UVC
 PVV5-1X/139RB15DMC
 PVV5-1X/139RJ15DMC
 PVV5-1X/139RJ15UMC
 PVV5-1X/139LA15DMC
 PVV5-1X/139LA15UMC
 PVV5-1X/154RA15DMC
 PVV5-1X/154RA15DVC
 PVV5-1X/154RA15RMC
 PVV5-1X/154RA15UMC
 PVV5-1X/154RB15DMC
 PVV5-1X/154RJ15DMC
 PVV5-1X/154RJ15DVC
 PVV5-1X/154RJ15UMC
 PVV5-1X/154LA15DMC
 PVV5-1X/154LA15UMC
 PVV5-1X/162RA15DMC
 PVV5-1X/162RA15DVC
 PVV5-1X/162RA15RMC
 PVV5-1X/162RA15UMC
 PVV5-1X/162RA15UVC
 PVV5-1X/162RB15DMC
 PVV5-1X/162RB15DVC
 PVV5-1X/162RB15LMC
 PVV5-1X/162RB15UMC
 PVV5-1X/162RJ15DMC
 PVV5-1X/162RJ15UMC
 PVV5-1X/162LA15DMC
 PVV5-1X/162LA15UMC
 PVV5-1X/162LB15UMC
 PVV5-1X/162LJ15DMC
 PVV5-1X/183RA15DMC
 PVV5-1X/183RA15RMC
 PVV5-1X/183RA15LMC
 PVV5-1X/183RA15UMC
 PVV5-1X/183RA15UVC
 PVV5-1X/183RJ15DMC
 PVV5-1X/183RJ15LMC
 PVV5-1X/183LA15DMC
 PVV5-1X/183LA15LMC
 PVV5-1X/193RA15DMC
 PVV5-1X/193RA15DVC
 PVV5-1X/193RA15RMC
 PVV5-1X/193RA15RVC
 PVV5-1X/193RA15LMC
 PVV5-1X/193RA15LVC
 PVV5-1X/193RA15UMC
 PVV5-1X/193RA15UVC
 PVV5-1X/193RB15DMC
 PVV5-1X/193RB15UMC
 PVV5-1X/193RJ15DMC
 PVV5-1X/193RJ15UMC
 PVV5-1X/193LA15DMC
 PVV5-1X/193LA15UMC
 PVV5-1X/193LB15DMC
REXROTH齒輪泵