美國VICKERS威格士柱塞泵現貨供應:
PVH074R02AA10B25200000100100010A PVH74C-RF-2S-10-C25V-31
PVH074R02AA10B252000001001AA010A PVH74C-RF-2S-11-C25V-31
PVH074R01AA10A25000000200100010A PVH74C-RSF-1S-10-C25-31
VICKERS威格士柱塞泵美國*
威格士變量柱塞泵
威格士柱塞泵靠氣壓供油的液壓油箱,在每次啟動機器后,必須等液壓漬箱達到使用氣壓后,才能操作機械。直軸斜盤式柱塞泵分為壓力供油型的自吸油型兩種。壓力供油型液壓泵大都采用有氣壓的油箱,也有液壓泵本身帶有補油分泵向液壓泵進油口提供壓力油的。自吸油型液壓泵的自吸油能力很強,無需外力供油。對于自吸油型柱塞泵,液壓油箱內的油液不得低于油標下限,要保持足夠數量的液壓油。液壓油的清潔度越高,液壓泵的使用壽命越長。
威格士變量柱塞泵結構形式
1)威格士柱塞泵是液壓系統的一個重要裝置。它依靠柱塞在缸體中往復運動,使密封工作容腔的容積發生變化來實現吸油、壓油。柱塞泵具有額定壓力高、結構緊湊、效率高和流量調節方便等優點,被廣泛應用于高壓、大流量和流量需要調節的場合,諸如液壓機、工程機械和船舶中。
2)威格士柱塞和柱塞套是一對精密偶件,經配對研磨后不能互換,要求有高的精度和光潔度和好的耐磨性,其徑向間隙為0.002~0.003mm
3)威格士柱塞頭部圓柱面上切有斜槽,并通過徑向孔、軸向孔與頂部相通,其目的是改變循環供油量;柱塞套上制有進、回油孔,均與泵上體內低壓油腔相通,柱塞套裝入泵上體后,應用定位螺釘定位?! ?br /> 威格士柱塞頭部斜槽的位置不同,改變供油量的方法也不同。
編輯本段威格士油泵回油過程
?、?柱塞往復運動總行程L是不變的,由凸輪的升程決定。
② 柱塞每循環的供油量大小取決于供油行程,供油行程不受凸輪軸控制是可變的?! ?br /> ③ 供油開始時刻不隨供油行程的變化而變化。
④ 轉動柱塞可改變供油終了時刻,從而改變供油量
威格士變量柱塞泵機械原理
威格士柱塞泵柱塞往復運動總行程L是不變的,由凸輪的升程決定。柱塞每循環的供油量大小取決于供油行程,供油行程不受凸輪軸控制是可變的。供油開始時刻不隨供油行程的變化而變化。轉動柱塞可改變供油終了時刻,從而改變供油量。柱塞泵工作時,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的柴油經油孔進入泵油室,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小(0.0015-0.0025mm)使柱塞頂部的泵油室成為一個密封油腔,柱塞繼續上升,泵油室內的油壓迅速升高。
VICKERS威格士柱塞泵美國*
威格士VICKERS柱塞泵分類及工作原理
徑向柱塞泵可分為閥配流與軸配流兩大類。閥配流徑向柱塞泵存在故障率高、效率低等缺點。上70、80年代發展的軸配流徑向柱塞泵克服了閥配流徑向柱塞泵的不足。由于徑向泵結構上的特點,陜定了軸配流徑向柱塞泵比軸向柱塞泵耐沖擊、壽命長、控制精度高。變量行程短泵的變量是在變量柱塞和限位柱塞作用下,改變定子的偏心距實現的,而定于的zui大偏心距為5—9mm(根據排量大小不同),變量行程很短。且變量機構設計為高壓操縱,由控制閥進行控制。故該泵的響應速度快。徑向結構設計克服了如軸向柱塞泵滑靴偏磨的問題。使其抗沖擊能力大幅度提高。
軸向柱塞泵是活塞或柱塞的往復運動方向與缸體中心軸平行的柱塞泵。軸向柱塞泵是利用與傳動軸平行的柱塞在柱塞孔內往復運動所產生的容積變化來進行工作的。由于柱塞和柱塞孔都是圓形零件,加工時可以達到很高的精度配合,因此容積效率高,運轉平穩,流量均勻性好,噪聲低,工作壓力高等優點,但對液壓油的污染較敏感,結構較復雜,造價較高。
PVH074R01AA10B25200000100100010A PVH74C-RF-1S-10-C25V-31
PVH074R01AA10A250000001001AA010A PVH74C-RF-1S-11-C25-31
PVH074R01AA10B252000001001AA010A PVH74C-RF-1S-11-C25V-31
PVH074R02AA10A25000000100100010A PVH74C-RF-2S-10-C25-31
PVH074R02AA10B25200000100100010A PVH74C-RF-2S-10-C25V-31
PVH074R02AA10B252000001001AA010A PVH74C-RF-2S-11-C25V-31
PVH074R01AA10A25000000200100010A PVH74C-RSF-1S-10-C25-31
PVH074R01AA10B25200000200100010A PVH74C-RSF-1S-10-C25V-31
PVH074R01AA10A250000002001AA010A PVH74C-RSF-1S-11-C25-31
PVH074R02AA10A25000000200100010A PVH74C-RSF-2S-10-C25-31
PVH074R02AA10B25200000200100010A PVH74C-RSF-2S-10-C25V-31
PVH074R01AA10A250000001001AB010A PVH74QIC-RF-1S-10-C25-31
PVH074R01AA10B252000001001AB010A PVH74QIC-RF-1S-10-C25V-31
PVH074R01AA10A250000001001AE010A PVH74QIC-RF-1S-11-C25-31
PVH074R01AA10B252000001001AE010A PVH74QIC-RF-1S-11-C25V-31
PVH074R02AA10A250000001001AB010A PVH74QIC-RF-2S-10-C25-31
PVH074R02AA10B252000001001AB010A PVH74QIC-RF-2S-10-C25V-31
PVH074R02AA10A250000001001AE010A PVH74QIC-RF-2S-11-C25-31
PVH074R02AA10B252000001001AE010A PVH74QIC-RF-2S-11-C25V-31
PVH074R01AB10A250000001001AB010A PVH74QIC-RM-1S-10-C25-31
PVH074R02AB10A250000001001AE010A PVH74QIC-RM-2S-11-C25-31
PVH074R01AA10A250000002001AB010A PVH74QIC-RSF-1S-10-C25-31
PVH074R01AA10B252000002001AB010A PVH74QIC-RSF-1S-10-C25V-31
PVH074R01AA10A250000002001AE010A PVH74QIC-RSF-1S-11-C25-31
PVH074R02AA10A250000002001AB010A PVH74QIC-RSF-2S-10-C25-31
PVH074R02AA10A250000002001AE010A PVH74QIC-RSF-2S-11-C25-31
PVH074R01AB10A250000002001AE010A PVH74QIC-RSM-1S-11-C25-31
VICKERS威格士PVH098型號.
PVH098R01AJ30A25000000100100010A PVH98C-RF-1S-10-C25-31
PVH098R01AJ30B25200000100100010A PVH98C-RF-1S-10-C25V-31
PVH098R01AJ30B252000001001AA010A PVH98C-RF-1S-11-C25V-31
PVH098R02AJ30A25000000100100010A PVH98C-RF-2S-10-C25-31
PVH098R02AJ30B25200000100100010A PVH98C-RF-2S-10-C25V-31
PVH098R02AJ30B252000001001AA010A PVH98C-RF-2S-11-C25V-31
PVH098R01AJ30A25000000200100010A PVH98C-RSF-1S-10-C25-31
PVH098R01AJ30B25200000200100010A PVH98C-RSF-1S-10-C25V-31
PVH098R02AJ30A25000000200100010A PVH98C-RSF-2S-10-C25-31
PVH098R02AJ30B25200000200100010A PVH98C-RSF-2S-10-C25V-31
PVH098R01AJ30A250000001001AB010A PVH98QIC-RF-1S-10-C25-31
PVH098R01AJ30B252000001001AB010A PVH98QIC-RF-1S-10-C25V-31
PVH098R01AJ30A250000001001AE010A PVH98QIC-RF-1S-11-C25-31
PVH098R02AJ30B252000001001AB010A PVH98QIC-RF-2S-10-C25V-31
PVH098R02AJ30A250000001001AE010A PVH98QIC-RF-2S-11-C25-31
PVH098R01AD30A250000001001AB010A PVH98QIC-RM-1S-10-C25-31
PVH098R01AD30A250000001001AE010A PVH98QIC-RM-1S-11-C25-31
PVH098R01AJ30A250000002001AB010A PVH98QIC-RSF-1S-10-C25-31
PVH098R01AJ30B252000002001AB010A PVH98QIC-RSF-1S-10-C25V-31
PVH098R01AJ30A250000002001AE010A PVH98QIC-RSF-1S-11-C25-31
PVH098R02AJ30A250000002001AB010A PVH98QIC-RSF-2S-10-C25-31
PVH098R02AJ30A250000002001AE010A PVH98QIC-RSF-2S-11-C25-31
PVH098R01AD30A250000002001AB010A PVH98QIC-RSM-1S-10-C25-31
PVH098R01AD30A250000002001AE010A PVH98QIC-RSM-1S-11-C25-31
:唐玙昺
:
上海穎哲工業自動化設備有限公司
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