VICKERS柱塞泵工作原理：

    VICKERS柱塞泵是液压系统的一个重要装置。它依靠柱塞在缸体中往复运动，使密封工作容腔的容积发生变化来实现吸油、压油。柱塞在缸体中要往复运动，因此，它的运动量很大，在工作过程中需要承受巨大的摩擦力，因此，柱塞要求高的硬度、耐磨性和使用寿命以及高的精度等。通过研究，采用淬火热处理可以满足柱塞的技术要求。
 
美国威格士柱塞泵的产品分类

1.轴向柱塞泵
轴向柱塞泵是活塞或柱塞的往复运动方向与缸体中心轴平行的柱塞泵。轴向柱塞泵是利用与传动轴平行的柱塞在柱塞孔内往复运动所产生的容积变化来进行工作的。由于柱塞和柱塞孔都是圆形零件，加工时可以达到很高的精度配合，因此容积效率高，运转平稳，流量均匀性好，噪声低，工作压力高等优点，但对液压油的污染较敏感，结构较复杂，造价较高。
2.直轴斜盘式柱塞泵
直轴斜盘式柱塞泵分为压力供油型的自吸油型两种。压力供油型液压泵大都采用有气压的油箱，也有液压泵本身带有补油分泵向液压泵进油口提供压力油的。自吸油型液压泵的自吸油能力很强，无需外力供油。靠气压供油的液压油箱，在每次启动机器后，必须等液压渍箱达到使用气压后，才能操作机械。如液压油箱的气压不足时就担任机器，会对液压泵内的与滑鞭造成拉脱现象，出会造成泵体内回程板与压板的非正常磨损。
3.液压柱塞泵
液压柱塞泵靠气压供油的液压油箱，在每次启动机器后，必须等液压渍箱达到使用气压后，才能操作机械。直轴斜盘式柱塞泵分为压力供油型的自吸油型两种。压力供油型液压泵大都采用有气压的油箱，也有液压泵本身带有补油分泵向液压泵进油口提供压力油的。自吸油型液压泵的自吸油能力很强，无需外力供油。对于自吸油型柱塞泵，液压油箱内的油液不得低于油标下限，要保持足够数量的液压油。液压油的清洁度越高，液压泵的使用寿命越长。
4.径向柱塞泵
径向柱塞泵可分为阀配流与轴配流两大类。阀配流径向柱塞泵存在故障率高、效率低等缺点。上70、80年代发展的轴配流径向柱塞泵克服了阀配流径向柱塞泵的不足。由于径向泵结构上的特点，陕定了轴配流径向柱塞泵比轴向柱塞泵耐冲击、寿命长、控制精度高。变量行程短泵的变量是在变量柱塞和限位柱塞作用下，改变定子的偏心距实现的，而定于的zui大偏心距为 5—9mm（根据排量大小不同），变量行程很短。且变量机构设计为高压操纵，由控制阀进行控制。故该泵的响应速度快。径向结构设计克服了如轴向柱塞泵滑靴偏磨的问题。使其抗冲击能力大幅度提高。

VICKERS变量柱塞泵，可以串联齿轮泵。由齿轮泵与柱塞泵共同构成的油源系统，可以控制整体的功率曲线，使得恒功率控制不再局限于对单个油泵的控制，而是整个系统。

 VICKERS变量柱塞泵工作状态：

    VICKERS变量柱塞泵其吸入和排出阀都是单向阀。当柱塞外拉时，工作室内压力降低，出口阀关闭，低于进口压力时，进口阀打开，液体进入；柱塞内推时，工作室压力升高，进口阀关闭，高于出口压力时，出口阀打开，液体排出。 带滑靴结构的轴向柱塞泵是目前使用zui广泛的轴向柱塞泵，安放在缸体中的柱塞通过滑靴与斜盘相接触，当传动轴带动缸体旋转时，斜盘将柱塞从缸体中拉出或推回，完成吸排油过程。柱塞与缸孔组成的工作容腔中的油液通过配油盘分别与泵的吸、排油腔相通。变量机构用来改变斜盘的倾角，通过调节斜盘的倾角可改变泵的排量。

    VICKERS变量柱塞泵柱塞往复运动总行程L是不变的，由凸轮的升程决定。柱塞每循环的供油量大小取决于供油行程,供油行程不受凸轮轴控制是可变的。供油开始时刻不随供油行程的变化而变化。转动柱塞可改变供油终了时刻，从而改变供油量。

美国威格士变量柱塞泵PVH系列:

PVH057R02AA10AAB010A

PVH057R02AA10A1400000010020001

PVH057R02AA10A2500000010010001

PVH057R02AA10A250000001001AB01

PVH057R02AA10A250000001001AE010A

PVH057R01AA10A250000002001AE01

PVH057R01AA10A250000002001AB010A

PVH057R01AA10A250000001AE1AB010A  

PVH057R01AA10A250000002001AB01

PVH057R01AA10A250000001001AE01

PVH057R01AA10A250000001AE10001

PVH057R01AA10A250000001AE1AB01

PVH057R01AA10A250000001AE1AE010A

PVH057R01AA10H002000AW1AE1AB01

PVH057R01AA10B142000001AE1AB010A

PVH057R01AA10B162000001AE1AC01

PVH057R01AA10B162000002001AF01

PVH057R01AA10B25000001001AE010A

PVH057R01AA10B2520000010010001

PVH057R01AA10B252000001001AB01

PVH057R01AA10B252000001001AE01

PVH057R01AA10B252000001AE1AB01

PVH057R01AA10B252000001AN1AB010A

PVH057R01AA10B252000002001AB01

PVH057R01AA10D250004001001AE01

PVH057R01AA10E252004001001AA010A

PVH057R01AA10E252004001001AE01

PVH057R01AA10E252004001AE1AA010A

PVH057R01AA10E252008001001AE010A

PVH057R01AA10H002000AW1001AB010A

PVH057R02AA10A250000001AE10001

PVH057R02AA10A250000002001AB01

PVH057R01AA10A250000001AN1AB010A

PVH057R01AA10H002000AW2001AB01

PVH057R01AA50A250000001001AB01

PVH057R01AA50A250000001AE1AB01

PVH057R01AA50B252000001001AB01

PVH057R01AA50G002000AW1001AB000A

PVH057R01AA50H002000AW1001AB010A

PVH057R01AB10A250000002001AE010A

PVH057R01AB10A250000002001AE010A  

PVH057R02AA10B162000001AE1AC01

PVH057R02AA10B25200000100100010A

PVH057R02AA10B252000001001AA01

PVH057R02AA10B252000001001AB01

PVH057R02AA10B252000001002AB010A

PVH057R02AA10B252000001AE10001

PVH057R02AA10B252000001AE1AA010A

PVH057R02AA10B252000001AE1AB01

PVH057R02AA10B252000001AK100010A

PVH057R02AA10B252000001AN10001

PVH057R02AA10B252000002001AA01

PVH057R02AA10H002000AW2001AB010A

PVH057R02AB10B252000001001AA010A

PVH057R0NAB10A250000002001AB01

PVH057R51AA10E252004001001AE010A

PVH057R51AA10E252004001AE1AE010A

PVH057R52AA10E252004001AE1AE010A

PVH063R01AA10A230000001001AE010A

PVH074L01AA10A2500000020010001

PVH074L01AA10B2520000010010001

PVH074L02AA10A00010A

PVH074L02AA10AAA01

PVH074L02AA10A2500000010010001

PVH074L02AA10A250000001001AB01

PVH074L02AA10B252000001001AA01

PVH074L02AA10B252000001001AA010A         

PVH074L02AA10B252000001AF100010A

PVH074L02AA10B252000001AF1AA010A

PVH074L02AA10B252000AL1001AP01

PVH074L02AA10E252015001001AA01

PVH074L03AA10A250000001AF100010A

PVH074L03AA10B252000001AF10001

PVH074L03AA10E252012001AF1AA010A

PVH074L03AA50E252012001AF1AA010A

PVH074L13AA10A250000001AF100010A

PVH074L13AA10B202000001AL1AE010A

PVH074L13AA10B202000001AL1AB010A 

PVH074R01AA10D250012001001AE010A

PVH074R01AA10D250014001001AA01

PVH074R01AA10E212007001001AE010A

PVH074R01AA10E252004001001AA010A

PVH074R01AA10E252009001001AE01

PVH074R01AA10E252014001001AE01

PVH074R01AA10E252018001001AE010A

PVH074R01AA10H002000AW1001AB01

PVH074R01AA10H002000AW2001AB01

PVH074R01AA50A250000001001AA010A

PVH074R01AA50A250000001001AB01

PVH074R01AA50B252000001001AB01

PVH074R01AA50B252000001001AE01

PVH074R01AA50B252000002001AB01

PVH074R01AA50H002000AW1001AB010A

PVH074R01AA60E252009001001AE01

PVH074R01AB10A25000000201AE010A

PVH074R01AB10A250000002001AE010A

PVH074R01AB10A250000002001AE010A

PVH074R01AB50H002000AS1001AB01

PVH074R02AA10A2500000010010001

PVH074R02AA10A250000001001AB010A

PVH074R02AA10A250000001001AE010A

PVH074R02AA10A250000001AV1AE010A

PVH074R02AA10A250000002001AE010A

PVH074R02AA10B162000001001AC01

PVH074R02AA10B2520000010010001

PVH074R02AA10B252000001001AB01

PVH074R02AA10B2520000010020001

PVH074R02AA10B252000001AF100010A

PVH074R02AA10B252000001AF1AA01

PVH074R01AA10AAB01

PVH074R01AA10AAC010A

PVH074R01AA10AAB010A

PVH074R01AA10A140000001001AC010A

PVH074R01AA10A140000002001AF01

PVH074R01AA10A2500000010010001

PVH074R01AA10A250000001001AB010A

PVH074R01AA10A250000001001AE01

PVH074R01AA10A250000001001AE010A

PVH074R01AA10A250000002001AB010A

PVH074R01AA10A250000002001AB010A

PVH074R01AA10B162000001001AC01

PVH074R01AA10B162000002001AF01

PVH074R01AA10B2520000010010001

PVH074R01AA10B252000001001AB01

PVH074R01AA10B252000001001AE01

PVH074R01AA10B25200000200100010A

PVH074R01AA10B252000002001AB01

PVH074R01AA10D250004001001AE01

PVH074R02AA10B2520000020010001

PVH074R02AA10B252000AL1002AP01

PVH074R02AA10H002000AW1001AB010A

PVH074R03AA10A250000001AF100010A

PVH074R03AA10A250000001AF1AB010A 

PVH074R03AA10B252000001AF1AB01

PVH074R03AA10B252000001AP1AA010A

PVH074R0NAB10AAF01

PVH074R0NAB10A250000001001AE010A

PVH074R0NAB10A250000002001AE01

PVH074R13AA10A140000001AF1AC010A

PVH074R13AA10A160000001AF1AC01

PVH074R13AA10A250000001AF1AB01

PVH074R13AA10A250000001AF1AB010A

PVH074R13AA10B252000001AF100010A

PVH074R13AA10B162000001AF1AC01

PVH074R13AA10B252000001AF1AB01

PVH074R13AA10B252000001AF1AB010A 

PVH074R13AA10D200010001AF1AE010A

PVH074R13AA10E252004001AF1AA01

PVH074R13AA10H002000AW1AF1AB01

PVH074R52AA10A25000000100100010A

PVH081R01AA10AAC010A

PVH081R01AA10A150000002001AC01

PVH081R01AA10A230000001001AE010A

PVH098L01AJ30A25000000100100010A

PVH098L01AJ30A2500000020010001

PVH098L01AJ30A250000002001AB01

PVH098L01AJ30B2520000010010001

PVH098R01AJ30A140000002001AF01

PVH098R01AJ30A2500000010010001

PVH098R01AJ30B162000002001AF010A

PVH098R01AJ30B2520000010010001

PVH098R01AJ30B252000001001AA010A

PVH098R01AJ30B252000001001AB010A

PVH098R01AJ30B25200000100200010A

PVH098R01AJ30B252000001001AB010A

PVH098R01AJ30B252000002001AB01

PVH098R01AJ30D250004001001AE010A

PVH098R01AJ30D250010001001AE010A

PVH098R01AJ30E252009001001AE01

PVH098R01AJ30E252015001001AE01

PVH098R01AJ30A250000001001AB01

PVH098R01AJ30E252020001001AE010A

PVH098R01AJ30H002000AW1001AB01

PVH098R01AJ30H002000AW2001AB010A

PVH098R01AJ70A250000001001AB01

PVH098R01AJ70A250000001001AB010A  

PVH098R01AJ70A250000002001AB010A

PVH098R01AJ70B252000001001AB010A

PVH098R01AJ70B252000001001AE01

PVH098R01AJ70E252004001001AE01

PVH098R01AJ70H002000AW1001AB010A

PVH098R01AJ30A250000001001AB010A

PVH098R01AJ30A250000001001AR010A

PVH098R01AJ30A250000001003AB010A

PVH098R01AJ30A250000001001AB010A

PVH098R01AJ30A2500000020010001

PVH098R01AJ30A250000002001AB010A

PVH098R01AJ30A250000002001AB010A

PVH098R02AJ30AAB010A

PVH098R02AJ30AAE010A

PVH098R02AJ30A2500000010010001

PVH098R02AJ30A250000001001AB01

PVH098R02AJ30A2500000020010001

PVH098R02AJ30B25200000100100010A

PVH098R02AJ30B252000001001AA01

PVH098R02AJ30B252000001001AB01

PVH098R02AJ30B252000001001AP010A

PVH098L01AJ30B252000001001AB01

PVH098L02AJ30A25000000100100010A

PVH098L02AJ30A250000001002AA010A

PVH098L02AJ30B172000001AD20001

PVH098L02AJ30B25200000100100010A

PVH098L02AJ30B252000001001AA010A

PVH098L02AJ30B252000001001AP010A

PVH098L02AJ30B25200000100200010A

PVH098L02AJ30B252000001AD10001

PVH098L02AJ30B2520000020010001

PVH098L02AJ30B252000AL1001AP01

PVH098L02AJ30E252015001001AA010A

PVH098L03AJ30A250000001AD1AA01

PVH098L03AJ30B252000001AD10001

PVH098L03AJ30B252000001AD1AP010A

PVH098L03AJ30B252000001AM10001

PVH098L03AJ30B252000AL1AD2AP01

PVH098L13AJ30E252004001AD1AA01

PVH098L53AJ30B252000001AD2AA010A

PVH098QIC RSF 1S 10 C25 31

PVH098R01AD30A250000001001AB01

PVH098R01AD30A250000001001AB010A

PVH098R01AD30A250000001001AE010A

PVH098R01AD30A250000002001AB010A

PVH098R01AD70B172000002001AB010A

PVH098R01AJ30AAB010A

PVH098R01AJ30AAB010A

PVH098R01AJ30AAB01

PVH098R02AJ30B252000001AD100010A

PVH098R02AJ30B2520000020010001

PVH098R02AJ30B252000002001AB010A

PVH098R02AJ30E252004001001AA010A

PVH098R02AJ30E252004001001AE01

PVH098R02AJ30H002000AW1001AB010A

PVH098R02AJ30H002000AW2001AB010A

PVH098R03AJ30A250000001AD100010A

PVH098R03AJ30B252000001AD10001

PVH098R03AJ30B252000001AD1AB01

PVH098R03AJ30B252000AL1AD1AP01

PVH098R13AJ30A070000001AD1AB01

PVH098R13AJ30A250000001AD1AB01

PVH098R13AJ30A250000002001AE010A

PVH098R13AJ30B162000001AD1AC010A

PVH098R13AJ30B252000001AD100010A

PVH098R13AJ30B252000001AD1AB01

PVH098R13AJ30E252004001AD1AA010A

PVH098R13AJ30E252004001AD1AE01

PVH098R13AJ30E252004001AD1AE010A

PVH098R13AJ30E252010001AD1AE01

PVH098R13AJ30E252018001AD1AE01

PVH098R13AJ30H002000AW1AD1AB01

PVH098R13AJ70B252000001AD1AE01

PVH106R01AJ30A230000001001AE010A

PVH106R02AJ30A230000001001AE010A

PVH106R13AJ70D230007001AC1AA010A

PVH106R13AJ70D230010001AC1AA010A

PVH131 PVH131L 02 322304

PVH131R13AF30A250000001001AB01

PVH131R13AF30A25000000100100010A

PVH131R13AF30B25200000100100010A

PVH131R13AF30B252000001001AB01

PVH131R13AF30B252000001001AB010A

PVH131R13AF30B252000001001AE010A

PVH131R13AF30B252000002001AB010A

PVH131R13AF30D250007001001AE010A

PVH131R13AF30E252004001001AA01

PVH131R13AF30E252008001001AE01

PVH131R13AF30E252015001001AE010A

PVH131R13AF30H002000BD2001AB01

PVH131R13AF70B2520000010010001

PVH131R13AF70B252000001001AE01

PVH131R13AF70E252018001001AA01

PVH131R03AF30A250000001001AB010A

PVH131R03AF30B2520000010010001

PVH131R03AF30B252000001AD10001

PVH131R03AF30B252000001AD1AP01

PVH131R03AF30B252000009AD1AP010A

PVH131R03AF30H002000BD2002AB010A

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