博世力士乐比例阀0811403017，德国博世力士乐（BOSCH-REXROTH）比例阀；

液压伺服控制系统
以伺服控制元件完成动力与运动方向控制，综合压力、流量、方向控制为一体，利用偏差控制进行纠偏，以满足精度控制需要，必须为闭环控制，可实现较高频率( 100HZ以上) ,有滑阀式、喷嘴挡板式、射流管式等，常采用机械伺服、电液伺服、气液伺服。

液压伺服系统分类:
(1)按输入的信号变化规律分类:定值控制系统、程序控制系统和伺服系统三类。当系统输入信号为定值时，称为定值控制系统，其基本任务是系统的*干扰能力。当系统的输入信号按预先给定的规律变化时，称为程序控制系统。伺服系统也称为随动系统，其输入信号是时间的未知函数，输出量能够准确、迅速地复现输入量的变化规律。
(2)按输入信号的不同分类:机液伺服系统、电液伺服系统、气液伺服系统等。
(3)按输出的物理量分类:位置伺服系统、速度伺服系统、力(或压力)伺服系统等。
(4)按控制元件分类:阀控系统和泵控系统。在机械设备中，阀控系统应用较多。

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液压控制阀,
一、液压控制阀的分类
1.概述
在液压系统中,用于控制和调节工作压力的高低、流量大小以及改变流量方向的元件统称为液压控制阀。液压控制阀通过对工作液体的压力、流量以及流液方向的控制与调节,从而可以控制液压执行元件的开启、停止和换向,调节其运动速度和输出扭矩(或力)
2.液压控制阀的分类 .
2.1按功能分类
(1)压力控制阀用于控制或调节液压系统或回路压力的阀， 如溢流阀、减压阀、顺序阀压力继电器等;
(2)方向控制阀用于控制或调节液压系统或回路中方向及其通和断,从而控制执行元件的运动方向及其启动、停止的阀。如单向阀、换向阀等;
(3)流量控制阀用于控制或调节液压系统或回路中工作液体流量大小的阀。如节流阀、调速阀、分集流阀等
2.2按阀的控制方式分类
液压控制阀按控制方式可分为:
(1)开关(或定值)控制阀:借助于通断型电磁铁及手动、机动、液动等方式,将阀芯位置或阀芯上的弹簧设定在某一工作状态 ,使液流的压力、流量或流向保持不变的阀。这类阀属于常见的普通液压阀
(2)比例控制阀:采用比例电磁铁(或力矩马达)将输入信号转换成力或阀的机械位移,使阀的输出(压力、流量)也按照其输入量连续、成比例地进行控制的阀,比例控制阀一般属于开环控制阀, 现在也很多用在闭环系统中。
(3)伺服控制阀:其输入信号(电量、机械量)多为偏差信号(输入信号与反馈信号的差值),阀的输出量( 压力、流量)也按照其输入量连续、成比例地进行控制的阀。这类阀的工作性能类似于比例控制阀,但具有较高的动态瞬应和静态性能,多用于要求较高的、响应快的闭环液压控制系统。
(4)数字控制阀:用于数字信息直接控制的阀类。

博世力士乐比例阀0811403017

力士乐REXROTH比例、高频响应和伺服阀
力士乐REXROTH比例方向阀
力士乐REXROTH比例方向阀，直动式
力士乐REXROTH二位四通和三位四通比例方向阀直控式，阀芯不带位移电反馈，不带集成式放大版（OBE）4WRA
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R902416026 DIR.-CO*OLVALVE 4WRA6E30-2X/G24N9Z&
R910988077 DIR.-CO*OLVALVE 4WRA6V15-2X/G24N9K&
R910991712 DIR.-CO*OLVALVE 4WRA6V30-2X/G24N9K&
R910988078 DIR.-CO*OLVALVE 4WRA10V30-2X/G24N9K4&
R910988165 DIR.-CO*OLVALVE 4WRA10V30-2X/G24N9Z4&
R902435562 DIR.-CO*OLVALVE 4WRA6EO7-2X/G24NJK31&
R996961637 4WRA10E-60-23/G26K4/M-SO32-692
R996961128 4WRA10E-60-23/G26K4/V-SO32-692
R900954062 4WRA10E1-30-23/G24K4/V
R900908297 4WRA10E1-30-23/G24N9K4/V
R900760427 4WRA10E1-30-23/G24N9K4/V-589
R900908463 4WRA10E1-30-23/G24N9Z4/V
R900954063 4WRA10E1-60-23/G24K4/V
R900908978 4WRA10E1-60-23/G24N9K4/V
R901159711 4WRA10E1-60-23/G24N9K4/V-589
R900911217 4WRA10E1-60-23/G24N9Z4/V
R900954060 4WRA10E30-23/G24K4/V
R901033865 4WRA10E30-23/G24K4/V-589
R900921739 4WRA10E30-23/G24N9K4/V
R900949993 4WRA10E30-23/G24N9K4/V-589
R900900161 4WRA10E30-23/G24N9Z4/V
R900903920 4WRA10E30-23/G24N9Z4/V-589
R900954061 4WRA10E60-23/G24K4/V
R900749771 4WRA10E60-23/G24K4/V-589
R900902097 4WRA10E60-23/G24N9K4/V
R900926365 4WRA10E60-23/G24N9K4/V-589
R900550508 4WRA10E60-23/G24N9Z4/V
R900916735 4WRA10E60-23/G24N9Z4/V-589
R900926679 4WRA10E60-23/G24Z4/V
R900954408 4WRA10EA30-23/G24K4/V
R900926985 4WRA10EA30-23/G24N9K4/V
R900960406 4WRA10EA30-23/G24N9K4/V-589
R900555553 4WRA10EA30-23/G24N9Z4/V
R900954064 4WRA10EA60-23/G24K4/V
R900917193 4WRA10EA60-23/G24N9K4/V
R901259366 4WRA10EA60-23/G24N9K4/VSO43A-1681
R900944554 4WRA10EA60-23/G24N9K4/V-589
R900573483 4WRA10EA60-23/G24N9Z4/V
0811403017 4WRBA10EA75-23/G24K4/M-828 
R900943216 4WRA10EB30-23/G24N9K4/V
R900936632 4WRA10EB30-23/G24N9K4/V-589
R900934606 4WRA10EB60-23/G24N9K4/V
R900733045 4WRA10EB60-23/G24N9K4/V-589
R900914117 4WRA10EB60-23/G24N9Z4/V
R901044042 4WRA10M60-23/G24N9K4/V-589
R900946399 4WRA10V30-23/G24N9K4/V
R900972508 4WRA10V30-23/G24N9K4/V-589
R900954066 4WRA10W1-30-23/G24K4/V
R900245449 4WRA10W1-30-23/G24K4/V-589
R900908299 4WRA10W1-30-23/G24N9K4/V
R900935629 4WRA10W1-30-23/G24N9K4/V-589
R900907233 4WRA10W1-30-23/G24N9Z4/V
R900912847 4WRA10W1-30-23/G24N9Z4/V-589
R900954067 4WRA10W1-60-23/G24K4/V
R900575765 4WRA10W1-60-23/G24N9K4/V
R900935739 4WRA10W1-60-23/G24N9K4/V-589
R900905496 4WRA10W1-60-23/G24N9Z4/V
R900914289 4WRA10W3-60-23/G24N9K4/V
R900911257 4WRA10W3-60-23/G24N9Z4/V
R900577424 4WRA10W30-23/G24K4/V
R900781053 4WRA10W30-23/G24K4/V-589
R900922441 4WRA10W30-23/G24N9K4/V
R900944775 4WRA10W30-23/G24N9K4/V-589
R900557836 4WRA10W30-23/G24N9Z4/V
R900902462 4WRA10W30-23/G24N9Z4/V-589
R901441236 4WRA10W60-23/G24K4/M
R900954065 4WRA10W60-23/G24K4/V
R900931721 4WRA10W60-23/G24K4/V-589
R900907650 4WRA10W60-23/G24N9K4/V
R900943416 4WRA10W60-23/G24N9K4/V-589
R901225420 4WRA10W60-23/G24N9K4/VL
R900550661 4WRA10W60-23/G24N9Z4/V
R900918417 4WRA10W60-23/G24N9Z4/V-589
R900954068 4WRA10WA30-23/G24K4/V
R900924586 4WRA10WA30-23/G24N9K4/V
R900962459 4WRA10WA30-23/G24N9K4/V-589
R900926311 4WRA10WA30-23/G24N9Z4/V-589
R900952054 4WRA10WA60-23/G24K4/V
R900906030 4WRA10WA60-23/G24K4/V-589
R900935623 4WRA10WA60-23/G24N9K4/V
R900953725 4WRA10WA60-23/G24N9K4/V-589
R900950630 4WRA10WB30-23/G24N9K4/V
R901056484 4WRA10WB60-23/G24K4/V
R900950629 4WRA10WB60-23/G24N9K4/V
R901240068 4WRA6E00-23=G24N5JK10Z/V-573
R900947149 4WRA6E03-23/G24N9K4/V
R900738630 4WRA6E03-23/G24N9K4/V-589
R900979635 4WRA6E03-23/G24NEXJ/V
R901142894 4WRA6E03-23/G24NJK31/V
R901010373 4WRA6E07-23/G24EXJ/V
R900910780 4WRA6E07-23/G24K4/V
R900958793 4WRA6E07-23/G24K4/V-589
R900906262 4WRA6E07-23/G24N9K4/V
R900904105 4WRA6E07-23/G24N9K4/V-589
R900909081 4WRA6E07-23/G24NEXJ/V
R901000270 4WRA6E07-23/G24NJK31/V-589
R901213835 4WRA6E1-07-23/G24K4/M
R900713549 4WRA6E1-07-23/G24K4/V
R900932055 4WRA6E1-07-23/G24N9K4/V
R900954053 4WRA6E1-15-23/G24K4/V
R900906034 4WRA6E1-15-23/G24N9K4/V
R900732778 4WRA6E1-15-23/G24N9K4/V-589
R900907392 4WRA6E1-15-23/G24N9Z4/V
R900947835 4WRA6E1-30-23/G24K4/V
R901009020 4WRA6E1-30-23/G24K4/V-589
R900934376 4WRA6E1-30-23/G24N9K4/V
R901060346 4WRA6E1-30-23/G24N9K4/V-589
R900907917 4WRA6E1-30-23/G24N9Z4/V
R900767562 4WRA6E1-30-23/G24NEXJ/V
R900946353 4WRA6E15-23/G24EXJ/V
R900904438 4WRA6E15-23/G24K4/V
R900954403 4WRA6E15-23/G24K4/V-589
R900920557 4WRA6E15-23/G24N9K4/V
R900911679 4WRA6E15-23/G24N9K4/V-589
R900551851 4WRA6E15-23/G24N9Z4/V
R900911928 4WRA6E15-23/G24N9Z4/V-589
R900975315 4WRA6E15-23/G24NEXJ/V
R901104708 4WRA6E15-23/G24NJK31/V
R900904437 4WRA6E15-23/G24Z4/V
R901347269 4WRA6E15-23=G24K4/V
R901177537 4WRA6E15-23=G24N9K4/V
R900904439 4WRA6E30-23/G24K4/V
R900720405 4WRA6E30-23/G24K4/V-589
R900902940 4WRA6E30-23/G24N9K4/V
R978040412 4WRA6E30-23/G24N9K4/VSO43A-1839
R900921245 4WRA6E30-23/G24N9K4/V-589
R900574608 4WRA6E30-23/G24N9Z4/V
R900907338 4WRA6E30-23/G24N9Z4/V-589
R900935473 4WRA6E30-23/G24NEXJ/V
R900746965 4WRA6E30-23/G24NJK31/V
R900904440 4WRA6E30-23/G24Z4/V
R900964834 4WRA6EA03-23/G24N9K4/V
R900967975 4WRA6EA03-23/G24N9K4/V-589
R900737408 4WRA6EA07-23/G24K4/V
R901007459 4WRA6EA07-23/G24K4/V-589
R900925553 4WRA6EA07-23/G24N9K4/V
R900973952 4WRA6EA07-23/G24N9K4/V-589
R900954054 4WRA6EA15-23/G24K4/V
R900938827 4WRA6EA15-23/G24K4/V-589
R900937718 4WRA6EA15-23/G24N9K4/V
R900979038 4WRA6EA15-23/G24N9K4/V-589
R900918062 4WRA6EA15-23/G24N9Z4/V
R900952255 4WRA6EA15-23/G24NJK31/V
R900972405 4WRA6EA30-23/G24EXJ/V
R900954055 4WRA6EA30-23/G24K4/V
R900936935 4WRA6EA30-23/G24N9K4/V
R900934860 4WRA6EA30-23/G24N9K4/V-589
R900903242 4WRA6EA30-23/G24N9Z4/V
R900952256 4WRA6EA30-23/G24NJK31/V
R900933754 4WRA6EA30-23/G24NJK31/V-589
R900922674 4WRA6EA30-23/G24Z4/V
R900963345 4WRA6EB07-23/G24N9K4/V
R901024758 4WRA6EB07-23/G24N9K4/V-589
R900728286 4WRA6EB15-23/G24K4/V
R900933792 4WRA6EB15-23/G24N9K4/V
R900936497 4WRA6EB15-23/G24N9K4/V-589
R900914114 4WRA6EB15-23/G24N9Z4/V
R900947693 4WRA6EB30-23/G24K4/V
R900924377 4WRA6EB30-23/G24N9K4/V
R900937091 4WRA6EB30-23/G24N9K4/V-589
R901012333 4WRA6M07-23/G24N9K4/V-589
R978910012 4WRA6MA30-23/G24K4/V
R901193908 4WRA6V07-23/G24N9K4/V
R900925786 4WRA6V07-23/G24N9Z4/V-589
R900938633 4WRA6V15-23/G24N9K4/V
R900953655 4WRA6V15-23/G24N9K4/V-589
R900919464 4WRA6V15-23/G24N9Z4/V-589
R901016752 4WRA6V30-23/G24N9K4/V
R900953654 4WRA6V30-23/G24N9K4/V-589
R900968209 4WRA6V30-23/G24N9K4/V-589=LB
R900919465 4WRA6V30-23/G24N9Z4/V-589
R978912832 4WRA6W03-23/G24K4/V
R901043499 4WRA6W03-23/G24N9K4/V
R901172474 4WRA6W03-23/G24N9K4/V-589
R900928412 4WRA6W07-23/G24K4/V
R901020579 4WRA6W07-23/G24K4/V-589
R900923472 4WRA6W07-23/G24N9K4/V
R900949337 4WRA6W07-23/G24N9K4/V-589
R901167916 4WRA6W07-23/G24N9K4/V-674
R900929762 4WRA6W07-23/G24N9Z4/V-589
R900721371 4WRA6W07-23/G24NEXJ/V
R900717829 4WRA6W07-23/G24NJK31/V
R900972827 4WRA6W1-07-23/G24K4/V
R900707030 4WRA6W1-07-23/G24K4/V-589
R900940546 4WRA6W1-07-23/G24N9K4/V
R900617116 4WRA6W1-07-23/G24N9K4/V-589
R900970379 4WRA6W1-15-23/G24EXJ/V
R901371070 4WRA6W1-15-23/G24K0/V-984
R900954057 4WRA6W1-15-23/G24K4/V
R900775650 4WRA6W1-15-23/G24K4/V=CSA
R900940043 4WRA6W1-15-23/G24N9K4/V
R900784024 4WRA6W1-15-23/G24N9K4/V-589
R900907231 4WRA6W1-15-23/G24N9Z4/V
R900722874 4WRA6W1-30-23/G24EXJ/V
R901371067 4WRA6W1-30-23/G24K0/V-984
R900954058 4WRA6W1-30-23/G24K4/V
R900902537 4WRA6W1-30-23/G24N9K4/V
R900935628 4WRA6W1-30-23/G24N9K4/V-589
R901373022 4WRA6W1-30-23/G24N9K4/V-674
R900907235 4WRA6W1-30-23/G24N9Z4/V
R900970380 4WRA6W15-23/G24EXJ/V
R900758517 4WRA6W15-23/G24JK31/V
R901371072 4WRA6W15-23/G24K0/V-984
R900954056 4WRA6W15-23/G24K4/V
R900976495 4WRA6W15-23/G24K4/V-589
R900784151 4WRA6W15-23/G24N2JK10/V-740
R900913443 4WRA6W15-23/G24N9K4/V
R900935630 4WRA6W15-23/G24N9K4/V-589
R987439580 4WRA6W15-23/G24N9K4/VSO43A1866
R900577492 4WRA6W15-23/G24N9Z4/V
R900578243 4WRA6W15-23/G24N9Z4/V-589
R900973546 4WRA6W15-23/G24NEXJ/V
R900576171 4WRA6W2-15-23/G24N9Z4/V-589
R901257801 4WRA6W2-30-23/G24N9K4/V-589
R901272123 4WRA6W2-30-23/G24N9K4/V-674
R900945520 4WRA6W3-15-23/G24N9K4/V
R900919690 4WRA6W3-15-23/G24N9Z4/V
R978047107 4WRA6W30-23/G12NK4/VSO43A-1799
R900954407 4WRA6W30-23/G24K4/V
R900953093 4WRA6W30-23/G24K4/V-589
R900784152 4WRA6W30-23/G24N2JK10/V-740
R900902095 4WRA6W30-23/G24N9K4/V
R900926975 4WRA6W30-23/G24N9K4/V-589
R901225179 4WRA6W30-23/G24N9K4/VL
R900900160 4WRA6W30-23/G24N9Z4/V
R900908170 4WRA6W30-23/G24N9Z4/V-589
R900966095 4WRA6W30-23/G24NEXJ/V
R900913511 4WRA6W30-23/G24Z4/V
R900710528 4WRA6WA07-23/G24K4/V
R900787374 4WRA6WA07-23/G24N9K4/V-589
R900954059 4WRA6WA15-23/G24K4/V
R901008492 4WRA6WA15-23/G24K4/V-589
R901367493 4WRA6WA15-23/G24N2JK10/M-740
R900961533 4WRA6WA15-23/G24N9K4/V
R900963296 4WRA6WA15-23/G24N9K4/V-589
R900913736 4WRA6WA15-23/G24N9Z4/V
R900902463 4WRA6WA15-23/G24N9Z4/V-589
R900935535 4WRA6WA30-23/G24K4/V
R900244238 4WRA6WA30-23/G24N9K4/V
R900947417 4WRA6WA30-23/G24N9K4/V-589
R900901914 4WRA6WA30-23/G24Z4/V
R900761800 4WRA6WB03-23/G24N9K4/V-589
R901000767 4WRA6WB07-23/G24K4/V
R901040903 4WRA6WB07-23/G24N9K4/V
R901206173 4WRA6WB07-23/G24N9K4/V-589
R901055110 4WRA6WB15-23/G24K4/V
R901266770 4WRA6WB15-23/G24K4/V-589
R901017934 4WRA6WB30-23/G24K4/V

排量V :指在无泄漏情况下,液压泵转一转所能排出的油液体积。
可见,排量的大小只与液压泵中密封工作容腔的几何尺寸和个数有关。
排量的常用单位是( mI/r )

理论流量q指在无泄漏情况下,液压泵单位时间内输出的油液体积。其值等于泵的排量V和泵轴转数n的乘积,即qt=Vnm'Is )
实际流量q指单位时间内液压泵实际输出油液体积。由于工作中泵的出口压力不等于零,因而存在泄漏量△q=kp工作压力越高,泄漏量越大,使得泵的实际流量小于泵的理论流量即*Aq
显然当液压泵处于卸荷(非工作)状态时,这时输出的实际流量近似为理论流量
额定流量qn泵在额定转数和额定压力下输出的实际流量。
实际上泵在能量转换过程中有容积损失和机械损失
容积损失主要是液压泵内部泄漏造成的流量损失,其大小用容积效率来表示
机械损失指液压泵内流体粘性和机械摩擦造成的转矩损失其大小用机械效率来表示

1)齿轮泵的分类
属于结构简单,纳污能力强,工作压力相对较低,成本较低的一种, 广泛用于农业机械:拖拉机、收割机等。工程机械:叉车、自卸车等。
齿轮泵按照齿轮的啮合形式可分为外啮合式和内啮合式两种,按照齿形曲线有渐开线形、圆弧齿形和摆线齿形。
2)外啮合齿轮泵
( 1 )外啮合齿轮泵的结构。主要由主动齿轮、从动齿轮、壳体、前后泵体、密封圈和轴承等组成。
外啮合齿轮泵的结构
1-从动齿轮; 2-轴承套; 3-密封圈; 4一前端盖; 5-密封;6-传动轴;;7-主动齿轮;8- 壳体;9后端盖
( 2 )外啮合齿轮泵的工作原理
密封容腔由壳体、端盖和两对齿轮的啮合部位组成。配流装置由齿轮啮合线将吸油区和压油区隔开,起配流作用。
(3)外啮合齿轮泵的几个问题
①泄漏问题
端面*:齿轮端面和轴承套端面之间间隙占80% ,
径向*:齿顶与壳体之间间隙15%
啮合线*:两个齿轮互相啮合部位之间间隙。5%减小端面泄漏的方法:采用端面间隙自动补偿。
②径向不平衡力。
泵内压力腔的油液经过径向间隙逐渐渗漏到吸油腔,其压力逐渐减小,液压力作用在齿轮上的合力大致为图中力F的方向,此力由轴承来承受,因而影响了轴承的寿命,往往成为泵工作压力的限制因素。
消除方法:
1缩小压油C即压力的作用面积减小径向不平衡力
2.增泵体内表面与齿轮顶圆的间隙,使在径向不平衡力作用时齿顶和泵体不接触。
3.开压力平衡槽,但泄漏大,很少用
③流量脉动。随着啮合点位置的不断变化,吸、压油腔在每-瞬间的容积变化率是不均匀的,因此齿轮泵的瞬时流量是脉动的。
④困油现象及消除措施。由 ( a )旋转到 b )所示位置时,闭死容积由大变到小;由( b )旋转到( C )所示位置时,闭死容积从小变到大。这种现象称之为困油现象。
危害:减小时使被困油挤出产生高压,*时会造成真空产生穴现象。
消除措施:在轴承套上开卸荷槽 , 当闭死容积由大变小时,借助卸荷槽与压油腔相通。当闭死容积由小变大时,借助卸荷槽与吸油腔相通。

齿轮泵优缺点:
结构简单、尺寸小、重量轻、价格低、工作可靠、自吸能力强、对油液污染不敏感。
泄漏量大、工作压力低。流量脉动大。
工作压力的措施:
减小端面泄漏。齿轮端面间隙自动补偿。