在盤(pán)式配油的軸向柱塞泵中,配油部位是最關(guān)鍵部位之一,它直接影響著液壓泵的可靠性和壽命。配油機(jī)構(gòu)有平面和球面兩種,通常所說(shuō)的的柱塞泵,多采用平面配油機(jī)構(gòu)。配油機(jī)構(gòu)的設(shè)計(jì)以工作可靠,漏損最少,滑動(dòng)表面的磨損最少為目標(biāo)設(shè)計(jì)。這樣,會(huì)使缸體與配油盤(pán)平面之間形成一定厚度的油膜,防止金屬直接接觸,保護(hù)好機(jī)械零件。同時(shí),還要使油膜為能耗的油膜厚度。。
齒輪泵是一種容積式泵,其結(jié)構(gòu)輕便緊湊,制造簡(jiǎn)單,工作可靠,維護(hù)保養(yǎng)方便。一般具有輸送流量小輸送壓力高的特點(diǎn),且用于輸送黏性較大的液體。但工藝要求高,不易獲得的匹配。隨著齒輪泵在結(jié)構(gòu)上的不斷完善,它也被用于中壓、高壓液壓系統(tǒng)中,因此研究齒輪泵對(duì)農(nóng)業(yè)和工業(yè)均有重要的意義。。
德國(guó)力士樂(lè)柱塞泵型號(hào):
A4VSG500HD1AT/30R-PPH10K249N
A10VS018DR/31R-PPA12N00
A4VS0125DR30R-PPB13N00
A4VSG40EM2009/10R-PZB10N000N
柱塞泵A4VSO-250DR/30R-PPB13N00
A4VG125HD1D2/32R-NSF02F02F021P
A4VSG40HD1D/10R-PPB10K019N
A4VSG250HD1P/30R-PPB10G300N
油泵A4VSO180DFR/30R-PPB13N00
A4FO500/30R-PZH25N00
A10VSO140DFLR/31R-PPB12N00
A4VSG40EM2009/10R-PZB10N000N
E-A4VSO125DR/30R-PPB13N00
A4VG71DWDMT2/23L-NZF02F041D
A4VG90HWD2/32R-PZF02F001S
A4VSG250HS/10R-PPB10N00
A2VK28MAOR1GOPE2-S022028554
A4VS071DR/22R-PPB13NOO
AA10VSO140DRG/31R-PKD62N00
A4VSO180EO/30L-P2B13N00
A4VSG250HD1D/30R-PPB10H029N
E-A4VSO250EO2/30R-VPB25N00-SO3
A4VSG250EM3066/30R-PPB10N009N
A4VSG250HS1/30L-PPB10N000N
A4VSG40HS1/10R-PPB10N00
A4VS0125DRG/30R-PPB13N00
A4VG250HD1D1/32LNZD10F001S
A4VG56EZ2DM1/32R-NSC02F013SH
柱塞泵A4VSG750HD/22R-PPH10NOO
A4VG180EP2DT1/32R-NTD02F021S
A4VG125HDM1/32R-NSF02F691S-S
A4VSG71HD1D/10R-PPB10K33ON
A4VSG250HW/30R-PPB10N000N
A10VSO140DFR/31R-PPB12K26
A4VSG250HS1/30R-PPB10N000N
A4VS071DR/30R-PPB13N00
A4VG71EPDT1/32R-NAF02F011S
A4VSG71HD1D/10R-PPB10K33ON
A4VSO40EO/31L-P2BBN00
A4VSG40HS1/10R-PPB10N00
A4VS071DR/30R-PPB13N00
A4VSO71EO2/10R-PPB13NOO
A4VSG250EO2/30R-PPB10H020N
A4VSG71EM3120/10R-PPB10K019N
A4VSO180EO/30L-P2B13N00
A4VSG250HS/10R-PPB10NOO
A4VS0250HD1GB/30R-PZB13K35-S
A4VS040DR/10R-PPB13NOO
A4VS071DR/30R-PPB13N00
A4VG250HD1D1/32R-NSD10F0010
A4VS0250DR/30R-PPB13N00
A4VG125HD1D2/32R-NSF001S
A4VG125HD1P1/32R-N2D10F69
A4VSG40HD1D/10R-PPB10K019N
軸向柱塞泵主泵
柱塞泵A4VSO-250DR/30R-PPB13N00
A4VSO250DFR/30R-PPB13N00
A4VSG250HD1D/30R-PPB10H029N
A4VSG40EM2009/10R-PPB10K310N
閥柱塞泵A4VTG71HW/32R-NLD10F001S
A4VSG250HD1A/30R-PPB10K269N
A4VSG71EO1/10R-PPB10N00
AA10VSO140DRG/31R-PKD62N00
A4VG125HDDT1/32L-PZF02F001D
A4VG90HWDL1/32R-NAF02F071L-S+A
A4VSG250EM1007/30R-PPB10H029F
??當(dāng)由于各種原因,空氣被吸入油液中,或者在油液壓力低于大氣壓時(shí),溶解在油液中的部分空氣就會(huì)析出形成氣泡,這些氣泡在低壓區(qū)時(shí)體積較大,當(dāng)隨油液流到高壓區(qū)時(shí),受到壓縮,體積突然變小或氣泡消失;反之,如在高壓區(qū)時(shí)體積本來(lái)較小,而當(dāng)流到低壓區(qū)時(shí),體積突然增大,油中氣泡體積這種急速改變的現(xiàn)象。氣泡體積的突然改變會(huì)產(chǎn)生噪聲,又由于這一過(guò)程發(fā)生在瞬間,將引起局部液壓沖擊而產(chǎn)生振動(dòng)。先導(dǎo)型溢流閥的導(dǎo)閥口和主閥口,油液流速和壓力的變化很大,很容易出現(xiàn)空穴現(xiàn)象,由此而產(chǎn)生噪聲和振動(dòng)。。
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