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REXROTH力士樂液壓閥選型手冊
點擊次數(shù):6569 發(fā)布時間:2019-12-12
REXROTH力士樂液壓閥選型手冊
上海穎哲是力士樂液壓閥中國總經(jīng)銷商,,REXROTH液壓閥公司大量現(xiàn)貨,,力士樂電磁閥,REXROTH柱塞泵,,REXROTH氣缸,,力士樂比例閥我司均有銷售。我們專業(yè)代理歐美各種品牌,,atos,,賀德克均有代理。大量*,,價格有優(yōu)勢,,品質有保障,歡迎您的咨詢,。
力士樂液壓閥簡介:
力士樂液壓閥(簡稱液壓閥)在液壓系統(tǒng)中的功用是通過控制調節(jié)液壓系統(tǒng)中油液的流向,、壓力和流量,使執(zhí)行器及其驅動的工作機構獲得所需的運動方向,、推力(轉矩)及運動速度(轉速)等,。任何一個液壓系統(tǒng),不論其如何簡單,都不能缺少液壓閥,;同一工藝目的的液壓機械設備,,通過液壓閥的不同組合使用,可以組成油路結構截然不同的多種液壓系統(tǒng)方案,。因此,,液壓閥是液壓技術中品種與規(guī)格多、應用泛,、的部分(元件),;一個新設計或正在運轉的液壓系統(tǒng),能否按照既定要求正??煽康剡\行,在很大程度上取決于其中所采用的各種液壓閥的性能優(yōu)劣及參數(shù)匹配是否合理 [1] ,。
壓力控制閥
按用途分為溢流閥,、減壓閥和順序閥。①溢流閥:能
力士樂液壓閥
控制液壓系統(tǒng)在達到調定壓力時保持恒定狀態(tài),。用于過載保護的溢流閥稱為安全閥,。當系統(tǒng)發(fā)生故障,壓力升高到可能造成破壞的限定值時,,閥口會打開而溢流,,以保證系統(tǒng)的安全。②減壓閥:能控制分支回路得到比主回路油壓低的穩(wěn)定壓力,。減壓閥按它所控制的壓力功能不同,,又可分為定值減壓閥(輸出壓力為恒定值)、定差減壓閥(輸入與輸出壓力差為定值)和定比減壓閥(輸入與輸出壓力間保持一定的比例),。③順序閥:能使一個執(zhí)行元件(如液壓缸,、液壓馬達等)動作以后,再按順序使其他執(zhí)行元件動作 [2] 。
力士樂液壓閥安裝方法:
出油閥是一個單向閥,,在彈簧壓力作用下,,閥上部圓錐面與閥座嚴密配合,其作用是在停供時,,將高壓油管與柱塞上端空腔隔絕,,防止高壓油管內(nèi)的油倒流入噴油泵內(nèi)。出油閥的下部呈十字斷面,,既能導向,,又能通過柴油。出油閥的錐面下有一個小的圓柱面,,稱為減壓環(huán)帶,,其作用是在供油終了時,使高壓油管內(nèi)的油壓迅速下降,避免噴孔處產(chǎn)生滴油現(xiàn)象,。當環(huán)帶落入閥座內(nèi)時則使上方容積很快增大,,壓力迅速減小,停噴迅速,。力士樂液壓閥工作時,,在噴油泵凸輪軸上的凸輪與柱塞彈簧的作用下,迫使柱塞作上,、下往復運動,,從而完成泵油任務,泵油過程可分為以下三個階段,。進油過程當凸輪的凸起部分轉過去后,,在彈簧力的作用下,柱塞向下運動,,柱塞上部空間(稱為泵油室)產(chǎn)生真空度,,當柱塞上端面把柱塞套上的進油孔打開后,充滿在油泵上體油道內(nèi)的柴油經(jīng)油孔進入泵油室,,柱塞運動到下止點,,進油結束。供油過程當凸輪軸轉到凸輪的凸起部分頂起滾[工業(yè)電器網(wǎng)-cnelc]輪體時,,柱塞彈簧被壓縮,,柱塞向上運動,燃油受壓,,一部分燃油經(jīng)油孔流回噴油泵上體油腔,。當柱塞頂面遮住套筒上進油孔的上緣時,由于柱塞和套筒的配合間隙很?。?.0015-0.0025mm)使柱塞頂部的泵油室成為一個密封油腔,,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,,推開出油閥,高壓柴油經(jīng)出油閥進入高壓油管,,通過噴油器噴入燃燒室,。REXROTH柱塞泵上供油,當上行到柱塞上的斜槽(停供邊)與套筒上的回油孔相通時,,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閉,,停止供油,。
力士樂現(xiàn)貨型號:
A10VS0100DR/31R-PPA12N00
A10VS0100DFR1/31R-PPA12N00
博世力士樂液壓泵Rexroth的詳細信息
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A10VS045DFR1/31R-PPA12N00
A10VS0140DFRI/31R-PPB12N00
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A10VSO100DR/31R-PPA12NOO
A10VS071DR/31L-PPA12N00
A10VSO71DRS/32R-VPB22U99-S2184,,1p
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A10VSO71DFR/31R-PPA12N00
4WRA10W30-2X/G24K4/
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力士樂液壓閥A10A2-2.0/
4WRA10W60-2X/G24K4V
A10VSO100DFR1/31R-PPA12N00
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A10VSO71DFR1/31PRA12N00 S1648
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A10VSO140DFR1/31R-PPB12N00
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A10VSO100DR/31R-PPA12N00
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A10VSO140DFR1/31R-PPB12N00
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A10VSO28DFR1(DR)/31R-PPA12N00
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A10VS071DR/31R-PPA12
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A10VSO10DR/52R-PPA12N00
A10VS018DR/52R-PPA14N00
A10VS0100DR/32R-VPB22(12)U99(N00)
HED40A10/315=HED80A20/315
A10VSO71DFR1/31R-PPA12N00
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A10VSO018DFR1
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A10VSO100DRG/31R-PPA12N00
A10VSO100DRG/31R-PPA12N00
A10VSO100DRG/31R-PPA12N00
力士樂液壓閥A10VSO71DFR
力士樂液壓閥A10VSO28DFR
力士樂液壓閥A10VSO140DFR1
A10VS028DR/30R-PPA12N00
A10VS071DFR1/31R-PPA12N00-S1648
A10VO100DFLR/31R-PSC62K01
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A10VSO100DFLR/31R-PPA12N00
A10VSO100DFLR/31R-PPA12N00
A10VSO100DR/31R-PPA12N00
A10VSO100DR/31R-PPA12N00
A10VSO71DFR1/31R-PPA12N00-S1648
A10VSO45DR/31R-PSC62K02
4WRA10W1-60-22/G24K4/ V
A10VSO140DFR1/31R-PPB12NOO
DEH16P-20-204-2WA100AL
DE16P-20-204-2WA100AL