VICKERS威格士柱塞泵美國(guó)* 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(dòng)機(jī)器后,必須等液壓漬箱達(dá)到使用氣壓后,才能操作機(jī)械。直軸斜盤(pán)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(bǔ)油分泵向液壓泵進(jìn)油口提供壓力油的。自吸油型液壓泵的自吸油能力很強(qiáng),無(wú)需外力供油。對(duì)于自吸油型柱塞泵,液壓油箱內(nèi)的油液不得低于油標(biāo)下限,要保持足夠數(shù)量的液壓油。液壓油的清潔度越高,液壓泵的使用壽命越長(zhǎng)。 威格士變量柱塞泵結(jié)構(gòu)形式 1)威格士柱塞泵是液壓系統(tǒng)的一個(gè)重要裝置。它依靠柱塞在缸體中往復(fù)運(yùn)動(dòng),使密封工作容腔的容積發(fā)生變化來(lái)實(shí)現(xiàn)吸油、壓油。柱塞泵具有額定壓力高、結(jié)構(gòu)緊湊、效率高和流量調(diào)節(jié)方便等優(yōu)點(diǎn),被廣泛應(yīng)用于高壓、大流量和流量需要調(diào)節(jié)的場(chǎng)合,諸如液壓機(jī)、工程機(jī)械和船舶中?! ?br> 2)威格士柱塞和柱塞套是一對(duì)精密偶件,經(jīng)配對(duì)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(guò)徑向孔、軸向孔與頂部相通,其目的是改變循環(huán)供油量;柱塞套上制有進(jìn)、回油孔,均與泵上體內(nèi)低壓油腔相通,柱塞套裝入泵上體后,應(yīng)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(guò)程 ?、?柱塞往復(fù)運(yùn)動(dòng)總行程L是不變的,由凸輪的升程決定。 ② 柱塞每循環(huán)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(kāi)始時(shí)刻不隨供油行程的變化而變化。 ④ 轉(zhuǎn)動(dòng)柱塞可改變供油終了時(shí)刻,從而改變供油量 威格士變量柱塞泵機(jī)械原理 威格士柱塞泵柱塞往復(fù)運(yùn)動(dòng)總行程L是不變的,由凸輪的升程決定。柱塞每循環(huán)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(kāi)始時(shí)刻不隨供油行程的變化而變化。轉(zhuǎn)動(dòng)柱塞可改變供油終了時(shí)刻,從而改變供油量。柱塞泵工作時(shí),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(fù)運(yùn)動(dòng),從而完成泵油任務(wù),泵油過(guò)程可分為以下三個(gè)階段。 進(jìn)油過(guò)程 當(dāng)凸輪的凸起部分轉(zhuǎn)過(guò)去后,在彈簧力的作用下,柱塞向下運(yùn)動(dòng),柱塞上部空間(稱(chēng)為泵油室)產(chǎn)生真空度,當(dāng)柱塞上端面把柱塞套上的進(jìn)油孔打開(kāi)后,充滿(mǎn)在油泵上體油道內(nèi)的柴油經(jīng)油孔進(jìn)入泵油室,柱塞運(yùn)動(dòng)到下止點(diǎn),進(jìn)油結(jié)束。 供油過(guò)程 當(dāng)凸輪軸轉(zhuǎn)到凸輪的凸起部分頂起滾輪體時(shí),柱塞彈簧被壓縮,柱塞向上運(yùn)動(dòng),燃油受壓,一部分燃油經(jīng)油孔流回噴油泵上體油腔。當(dāng)柱塞頂面遮住套筒上進(jìn)油孔的上緣時(shí),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(gè)密封油腔,柱塞繼續(xù)上升,泵油室內(nèi)的油壓迅速升高。 VICKERS威格士柱塞泵美國(guó)* 威格士VICKERS柱塞泵分類(lèi)及工作原理 徑向柱塞泵可分為閥配流與軸配流兩大類(lèi)。閥配流徑向柱塞泵存在故障率高、效率低等缺點(diǎn)。上70、80年代發(fā)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(jié)構(gòu)上的特點(diǎn),陜定了軸配流徑向柱塞泵比軸向柱塞泵耐沖擊、壽命長(zhǎng)、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(shí)現(xiàn)的,而定于的zui大偏心距為5—9mm(根據(jù)排量大小不同),變量行程很短。且變量機(jī)構(gòu)設(shè)計(jì)為高壓操縱,由控制閥進(jìn)行控制。故該泵的響應(yīng)速度快。徑向結(jié)構(gòu)設(shè)計(jì)克服了如軸向柱塞泵滑靴偏磨的問(wèn)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(fù)運(yùn)動(dòng)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(dòng)軸平行的柱塞在柱塞孔內(nèi)往復(fù)運(yùn)動(dòng)所產(chǎn)生的容積變化來(lái)進(jìn)行工作的。由于柱塞和柱塞孔都是圓形零件,加工時(shí)可以達(dá)到很高的精度配合,因此容積效率高,運(yùn)轉(zhuǎn)平穩(wěn),流量均勻性好,噪聲低,工作壓力高等優(yōu)點(diǎn),但對(duì)液壓油的污染較敏感,結(jié)構(gòu)較復(fù)雜,造價(jià)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(hào). 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
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