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型号 PV7 的液压泵是变量叶片泵。
主要由泵体、转子、叶片、定子环、压力控制器和调节螺栓组成。圆形的定子环夹持在小调节活塞和大调节活塞之间。此环的第三个接触点是高度调节螺栓。被驱动的转子在定子环内转动。转子槽内的叶片由于离心力的作用压在定子环上。

力士乐REXROTH叶片泵吸油和排油过程
用来传递油液的腔由叶片、转子、定子环和配油盘形成。
为了在投入使用时确保泵的运行功能，定子环由大调节活塞后面的弹簧压在其偏心位置 (排油位置)。

当转子转动时，油腔的容积增大，并且通过吸油通道吸油。当油腔达到大容积时，它脱离吸油侧。转子继续转动，此腔和压油侧接通，并使其容积减小，通过压油通道压油到系统。

类型 PV7...A 液压泵是直动式叶片泵，其排量体积可调。
基本上由壳体，盖板，转子，叶片，定子环，压缩弹簧，调整螺钉和控制板组成。为限制大流量，该泵配有调节螺钉。驱动转子在定子环中旋转。转子中导入的叶片在离心力的作用下贴紧定子环的内跑合面。
吸油和排油过程
运输流体所需的腔室由叶片，转子，定子环，控制板和盖板组成。
转子旋转时室体积增加，腔室通过吸油通道填充流体。达到大室体积后，腔室从吸油侧分离。
随着转子继续旋转，高压流体侧的连接打开，腔室缩小并迫使流体通过压力油口进入系统。
压力控制
定子环由弹簧固定在其初始的偏心位置。系统中所需的大工作压力是在调节螺钉处通过弹簧设定。增大的压力是由于对抗弹簧力的工作阻力作用于定子
环内跑合面的压力侧而产生的。
达到相关压力（由设定的弹簧力决定）后，定子环朝零位置的方向移出其偏心位置。流量自我调节至当时所需的值。当达到
弹簧处设置的大设定压力时，泵会将流量调回至几乎为零。工作压力得到保持，且仅更换泄露流体。流体的损失和加热从而降至低水平。

力士乐叶片泵PV7-1A/16-20RE01MC0-16

德国力士乐REXROTH叶片泵订货号和型号：

R900580382 PV7-1X/16-20RE01MC0-16
R987065773 PV7-1X/16-20RE01MC0-16LIM17CC
R987066114 PV7-1X/16-20RE01MC0-16LIM20CC
R900517795 PV7-1X/16-20RE01MC0-16-A184
R901370386 PV7-1X/16-20RE01MC0-16-C3.1
R901412083 PV7-1X/16-20RE01MC0-16-P100
R901406649 PV7-1X/16-20RE01MC0-16-P110
R901417552 PV7-1X/16-20RE01MC0-16-P120
R901405871 PV7-1X/16-20RE01MC0-16-P52
R901339145 PV7-1X/16-20RE01MC0-16-P70Q20
R987119852 PV7-1X/16-20RE01MC016+ PV7-16-20RE01MC016
R987074165 PV7-1X/16-20RE01MC016+PVV1-1X/018RJ15DMB
R987066162 PV7-1X/16-20RE01MC016+V7/10-14RE01MC016
R987046365 PV7-1X/16-20RE01MC016+V7/16-20RE01MC16
R900592237 PV7-1X/16-20RE01MC3-16
R900616890 PV7-1X/16-20RE01MC3-16-A184
R901391674 PV7-1X/16-20RE01MC3-16-C3.1
R901429722 PV7-1X/16-20RE01MC3-16-P50Q25
R900506473 PV7-1X/16-20RE01MC5-16
R900934651 PV7-1X/16-20RE01MC5-16WG
R900926429 PV7-1X/16-20RE01MC5-16WH
R900748912 PV7-1X/16-20RE01MC6-16
R900534412 PV7-1X/16-20RE01MC7-16
R901163663 PV7-1X/16-20RE01MC7-16WH
R901161166 PV7-1X/16-20RE01MC8-16
R900509274 PV7-1X/16-20RE01MD0-16
R987179769 PV7-1X/16-20RE01MD0-16HAMERSLAGGRIJS
R900573212 PV7-1X/16-20RE01MD0-16-A234
R901284711 PV7-1X/16-20RE01MD0-16-Q25
R900511987 PV7-1X/16-20RE01MD3-16
R901134661 PV7-1X/16-20RE01MD6-16
R987196702 PV7-1X/16-20RE01MD6-16
R900939159 PV7-1X/16-20RE01MN0-16
R900733270 PV7-1X/16-20RE01MW0-16
R900721670 PV7-1X/16-20RE01MW0-16WG
R900722117 PV7-1X/16-20RE01MW0-16WH
R900533582 PV7-1X/16-30RE01MC0-08
R900757582 PV7-1X/16-30RE01MC0-08-A184
R901320920 PV7-1X/16-30RE01MC0-08-A474
R987127040 PV7-1X/16-30RE01MC008+PGH2-2X/008RR07VU2
R900533296 PV7-1X/16-30RE01MC3-08
R900930106 PV7-1X/16-30RE01MC5-08
R900967123 PV7-1X/16-30RE01MC5-08WG
R900245924 PV7-1X/16-30RE01MC5-08WH
R901023894 PV7-1X/16-30RE01MC7-08
R900560658 PV7-1X/16-30RE01MD0-08
R901226880 PV7-1X/16-30RE01MN0-08
R901231523 PV7-1X/16-30RE01MW0-08WH
R900580383 PV7-1X/25-30RE01MC0-16
R987064563 PV7-1X/25-30RE01MC0-16LIM.28CC
R987066596 PV7-1X/25-30RE01MC0-16PMAX=60BAR
R987255802 PV7-1X/25-30RE01MC0-16+ PV7-1X/10-14RE**
R987070149 PV7-1X/25-30RE01MC0-16+V7-1X/16-20RE01**
R900523267 PV7-1X/25-30RE01MC0-16-A184
R900965089 PV7-1X/25-30RE01MC0-16-A234
R901381715 PV7-1X/25-30RE01MC0-16-P100Q36
R987066541 PV7-1X/25-30RE01MC016+1PF2G2-4X/08RR20MR
R987306462 PV7-1X/25-30RE01MC016+AZPF10-008RRR20MB
R900586235 PV7-1X/25-30RE01MC3-16
R900517464 PV7-1X/25-30RE01MC5-16
R900919510 PV7-1X/25-30RE01MC5-16WG
R900933323 PV7-1X/25-30RE01MC5-16WH
R901086789 PV7-1X/25-30RE01MC5-16WH-A234
R901375575 PV7-1X/25-30RE01MC6-16
R900941543 PV7-1X/25-30RE01MC7-16
R987410063 PV7-1X/25-30RE01MCO16+PVV21X068RJ15DMB
R900509506 PV7-1X/25-30RE01MD0-16
R987065930 PV7-1X/25-30RE01MD0-16+ PV7/25-30RE01MD0
R900920739 PV7-1X/25-30RE01MD0-16-A234
R901382863 PV7-1X/25-30RE01MD5-16WH
R901022287 PV7-1X/25-30RE01MN0-16
R900768658 PV7-1X/25-30RE01MW0-16
R900744495 PV7-1X/25-30RE01MW0-16WH
R900705426 PV7-1X/25-30RE01MW5-16WH
R900534508 PV7-1X/25-45RE01MC0-08
R901411159 PV7-1X/25-45RE01MC0-08-P25Q50
R987277980 PV7-1X/25-45RE01MC008+AZPF10-005RRR20MB
R987070684 PV7-1X/25-45RE01MC008+HY/ZFS11/4R213
R900538525 PV7-1X/25-45RE01MC3-08
R900535532 PV7-1X/25-45RE01MC5-08
R900576487 PV7-1X/25-45RE01MC5-08WH
R900551273 PV7-1X/25-45RE01MC7-08
R900751356 PV7-1X/25-45RE01MC7-08WG
R900568833 PV7-1X/25-45RE01MD0-08
R900782808 PV7-1X/25-45RE01MD0-08-A234
R900976176 PV7-1X/25-45RE01MN0-08
R900780016 PV7-1X/25-45RE01MW0-08WH
R900580384 PV7-1X/40-45RE37MC0-16
R987063936 PV7-1X/40-45RE37MC0-16LIM.32CC
R987065973 PV7-1X/40-45RE37MC0-16LIM.35CC
R987216583 PV7-1X/40-45RE37MC0-16LIM.37,5CC.
R987063461 PV7-1X/40-45RE37MC0-16LIM.38CC.(55LT.)
R978026029 PV7-1X/40-45RE37MC0-16SO43A-1821
R900970451 PV7-1X/40-45RE37MC0-16-A234
R900946174 PV7-1X/40-45RE37MC0-16-A276
R901047776 PV7-1X/40-45RE37MC0-16-A446
R901387535 PV7-1X/40-45RE37MC0-16-P80
R901381716 PV7-1X/40-45RE37MC0-16-P90
R987117272 PV7-1X/40-45RE37MC016+AZPF10-005RRR20MC*
R987126029 PV7-1X/40-45RE37MC016+PGH2-2X/008RE07VU2
R900590087 PV7-1X/40-45RE37MC3-16
R900935443 PV7-1X/40-45RE37MC3-16-A184
R900971765 PV7-1X/40-45RE37MC3-16-A276
R900502277 PV7-1X/40-45RE37MC5-16
R900910016 PV7-1X/40-45RE37MC5-16WG
R900553588 PV7-1X/40-45RE37MC5-16WH
R900954137 PV7-1X/40-45RE37MC6-16
R900959317 PV7-1X/40-45RE37MC7-16
R901032005 PV7-1X/40-45RE37MC7-16WG
R900705176 PV7-1X/40-45RE37MC7-16WH
R901161161 PV7-1X/40-45RE37MC8-16
R987065006 PV7-1X/40-45RE37MCO-16+VV1/36RJ15DMBA261
R987273006 PV7-1X/40-45RE37MCO16+A10VO45DFLR/31R-**
R987281907 PV7-1X/40-45RE37MCO16+A10VO45DFR/31R-**
R987063382 PV7-1X/40-45RE37MCO16+ PV7-40-45RE37MCO16
R900593330 PV7-1X/40-45RE37MD0-16
R900922602 PV7-1X/40-45RE37MD0-16-A234
R901438282 PV7-1X/40-45RE37MD0-16-P50Q36
R901464844 PV7-1X/40-45RE37MD0-16-P50Q39
R901160732 PV7-1X/40-45RE37MD3-16
R900533919 PV7-1X/40-45RE37MN0-16
R900979440 PV7-1X/40-45RE37MW0-16
R901055473 PV7-1X/40-45RE37MW0-16WG
R900700384 PV7-1X/40-45RE37MW0-16WH
R900740820 PV7-1X/40-45RE37MW0-16WH-A234
R901254170 PV7-1X/40-45RE37MW5-16WG
R901244836 PV7-1X/40-45RE37MW5-16WH
R901221506 PV7-1X/40-45RE37MW6-16WH
R901064326 PV7-1X/40-55RE37MC0-08-A449
R901116904 PV7-1X/40-55RE37MC3-08-A449
R900535588 PV7-1X/40-71RE37MC0-08
R987340616 PV7-1X/40-71RE37MC0-08LIM.51CC./70BAR
R987127975 PV7-1X/40-71RE37MC0-08+PGH2-2X/008RR07VU
R987124737 PV7-1X/40-71RE37MC0-08+PGH2-2X/08RR07VU2
R900776736 PV7-1X/40-71RE37MC0-08-A184
R901320923 PV7-1X/40-71RE37MC0-08-A474
R987124720 PV7-1X/40-71RE37MC008+PGH2-2X/006RR07VU2
R900561581 PV7-1X/40-71RE37MC3-08
R900539468 PV7-1X/40-71RE37MC5-08
R900958545 PV7-1X/40-71RE37MC5-08-A234
R901197066 PV7-1X/40-71RE37MC5-08WG
R900711250 PV7-1X/40-71RE37MC5-08WH
R900719062 PV7-1X/40-71RE37MC7-08
R900751358 PV7-1X/40-71RE37MC7-08WG
R901163657 PV7-1X/40-71RE37MC7-08WH
R987064864 PV7-1X/40-71RE37MCO08+V7-1X/10-14RE01MC
R900539886 PV7-1X/40-71RE37MD0-08
R976718445 PV7-1X/40-71RE37MD0-08-A427
R901059512 PV7-1X/40-71RE37MW0-08WH
R987065694 PV7-1X/40-71REMCO08+ PV7-40-45RE37MCO16
R900506808 PV7-1X/63-71RE07MC0-16
R987218893 PV7-1X/63-71RE07MC0-16LIM50CC/G
R987073484 PV7-1X/63-71RE07MC0-16LIM.A60CC/G
R987243968 PV7-1X/63-71RE07MC0-16-Q=90L.1750G.
R987063402 PV7-1X/63-71RE07MC0-1680L/1'-65BAR
R987046385 PV7-1X/63-71RE07MC0-16LIM.75L.1450
R987066973 PV7-1X/63-71RE07MC0-16TARATAA56CC;
R987071429 PV7-1X/63-71RE07MC0-16TARATAA62CC
R987070973 PV7-1X/63-71RE07MC0-16+GH2-2X/006RR07MU2
R987073849 PV7-1X/63-71RE07MC0-16+PGH3-2X016RR07VU2
R987067590 PV7-1X/63-71RE07MC0-16+PVV1-027RJ15DMB
R900720730 PV7-1X/63-71RE07MC0-16-A234
R901443119 PV7-1X/63-71RE07MC0-16-C3.1
R900511986 PV7-1X/63-71RE07MC3-16
R900518218 PV7-1X/63-71RE07MC5-16
R900553692 PV7-1X/63-71RE07MC5-16WG
R900942455 PV7-1X/63-71RE07MC5-16WH
R900976100 PV7-1X/63-71RE07MC6-16
R900535061 PV7-1X/63-71RE07MC7-16
R900705106 PV7-1X/63-71RE07MC7-16WH
R900519094 PV7-1X/63-71RE07MD0-16
R900925956 PV7-1X/63-71RE07MD0-16-A234
R901400158 PV7-1X/63-71RE07MD0-16-Q90
R900910480 PV7-1X/63-71RE07MD5-16
R900750169 PV7-1X/63-71RE07MD6-16
R900744715 PV7-1X/63-71RE07MN0-16
R900733271 PV7-1X/63-71RE07MW0-16
R901151476 PV7-1X/63-71RE07MW0-16WG
R901017159 PV7-1X/63-71RE07MW0-16WH
R901119795 PV7-1X/63-71RE07MW5-16WH
R900560659 PV7-1X/63-94RE07MC0-08
R901416893 PV7-1X/63-94RE07MC0-08-P50Q116
R901365507 PV7-1X/63-94RE07MC0-08-P75
R901411968 PV7-1X/63-94RE07MC0-08-P80Q114
R901054421 PV7-1X/63-94RE07MC3-08
R900561234 PV7-1X/63-94RE07MC5-08
R900919509 PV7-1X/63-94RE07MC5-08WG
R900937203 PV7-1X/63-94RE07MC5-08WH
R901353747 PV7-1X/63-94RE07MC7-08WG
R900574560 PV7-1X/63-94RE07MD0-08
R900950815 PV7-1X/63-94RE07MD0-08-A234
R900948499 PV7-1X/63-94RE07MN0-08
R900773233 PV7-1X/63-94RE07MW0-08WH
R901320916 PV7-1A/10-14RE01MC0-08-A474
R900580381 PV7-1A/10-14RE01MC0-16
R987046360 PV7-1A/10-14RE01MC0-16LIM.15LT1450G.
R987047421 PV7-1A/10-14RE01MC0-16LIM.16LT/MIN
R987065905 PV7-1A/10-14RE01MC0-16+ZFS11/22,5R213
R987072161 PV7-1A/10-14RE01MC0-16+ZFS11/8R213
R900533851 PV7-1A/10-14RE01MC0-16-A184
R901358374 PV7-1A/10-14RE01MC0-16-P100
R901382678 PV7-1A/10-14RE01MC0-16-P125Q8
R901171150 PV7-1A/10-14RE01MC0-16-P140Q10
R900941071 PV7-1A/10-14RE01MC0-16-P45
R900941073 PV7-1A/10-14RE01MC0-16-P60Q15
R901442350 PV7-1A/10-14RE01MC0-16-P60Q20
R901414295 PV7-1A/10-14RE01MC0-16-P80Q20
R901344755 PV7-1A/10-14RE01MC0-16-P90
R900598753 PV7-1A/10-14RE01MC3-16
R900520401 PV7-1A/10-14RE01MC5-16
R901394361 PV7-1A/10-14RE01MC5-16WG
R900933324 PV7-1A/10-14RE01MC5-16WH
R901010430 PV7-1A/10-14RE01MC6-16
R900509053 PV7-1A/10-14RE01MC7-16
R900504653 PV7-1A/10-14RE01MD0-16
R900548512 PV7-1A/10-14RE01MD0-16-A234
R901404893 PV7-1A/10-14RE01MD0-16-Q15
R900520725 PV7-1A/10-14RE01MD3-16
R900520787 PV7-1A/10-14RE01MD5-16
R900537419 PV7-1A/10-14RE01MN0-16
R900772792 PV7-1A/10-14RE01MW0-16
R901136642 PV7-1A/10-14RE01MW0-16WG
R900741002 PV7-1A/10-14RE01MW0-16WH
R900534143 PV7-1A/10-20RE01MC0-10

剪叉式高空作业平台行走液压系统。
行走液压系统主用来实现剪叉式高空作业平台平稳行走,通过相应液压元件的控制，可实现行走制动的启停及高低速行走。电机泵为整个行走系统提供动力，过滤器用来过滤液压回油,调压阀用来控制整个行走液压系统的压力,制动器用来实现行走的启停,通过电磁换向阀与电磁换向阀配合使用,可实现剪叉前进与后退高低速行走，通过单向阀和的配合使用，可以防止马达在系统停止供油时继续行走出现吸空，保证马达侧管路充满液压油。

起重机液压系统主要特点
微动性能要求高
回转微动性:啮合间隙、启动停止平稳
变幅微动性:油缸低速爬行，零泄漏与低摩擦
卷扬微动性:比例阀阀口、低稳定转速、动静摩擦、马达泄露
操控性能
速度的可控性:速度无极变化
舒适性与控制精度
液压系统工作原理-起重机
调速性能广
作业效率:
大作业速度:机构的大转速限制
重载低速、轻载高速:变量马达
高可靠性
不会导致停机故障、不能完成相关动作
节能与系统热平衡
连续工作时间

工程机械行走制动系统必须保证在恶劣条件下仍具有良好的制动性能，并要求操纵轻便和高可靠性。目前大多数工程机械的制动系统采用气顶油的
结构型式，以实现车辆的高压制动效能。近年来，国外工程机械出现采用全液压制动的方式，其主要.优点是系统的制动压力高，产生的制动力矩大，制动灵敏，且液压管路为全封闭的回路，污染性也很小。

液压制动系统一般由制动传动装置和制动执行元件两部分组成。前者将制动踏板控制的动力源传递给制动执行元件;后者是装在车轮上的制动器，它将传动装置传来的动力变成摩擦力矩。

双回路液压制动系统原理，该系统中的双路蓄能器充液阀控制蓄能器的充油量和压力。蓄能器的充油量和高制动压力则根据制动器的用油量、制动力和紧急制动的次数来决定。充液阀的流量和压力预设一上限值，当蓄能器的压力达到该值时，充液阀使系统中的一少部分油回流，给蓄能器充压，蓄能器的压力达到设定值时，液压泵卸荷。系统中的充液阀同时给两个蓄能器供油，当油泵出现故障时，两个蓄能器分别给两个回路的制动器供油，既同时工作又互不影响。另外，系统中设置的低压开关可以随时提醒驾驶员，当蓄能器的压力连续下降，并低于报警开关的预定值时，应检查液压制动系统，注意安全。