REXROTH力士乐液压阀选型手册

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力士乐液压阀简介：
力士乐液压阀（简称液压阀）在液压系统中的功用是通过控制调节液压系统中油液的流向、压力和流量，使执行器及其驱动的工作机构获得所需的运动方向、推力（转矩）及运动速度（转速）等。任何一个液压系统，不论其如何简单，都不能缺少液压阀；同一工艺目的的液压机械设备，通过液压阀的不同组合使用，可以组成油路结构截然不同的多种液压系统方案。因此，液压阀是液压技术中品种与规格多、应用泛、的部分（元件）；一个新设计或正在运转的液压系统，能否按照既定要求正常可靠地运行，在很大程度上取决于其中所采用的各种液压阀的性能优劣及参数匹配是否合理 [1]  。
压力控制阀
按用途分为溢流阀、减压阀和顺序阀。①溢流阀：能

力士乐液压阀
控制液压系统在达到调定压力时保持恒定状态。用于过载保护的溢流阀称为安全阀。当系统发生故障，压力升高到可能造成破坏的限定值时，阀口会打开而溢流，以保证系统的安全。②减压阀：能控制分支回路得到比主回路油压低的稳定压力。减压阀按它所控制的压力功能不同，又可分为定值减压阀（输出压力为恒定值）、定差减压阀（输入与输出压力差为定值）和定比减压阀（输入与输出压力间保持一定的比例）。③顺序阀：能使一个执行元件（如液压缸、液压马达等）动作以后,再按顺序使其他执行元件动作 [2]  。

力士乐液压阀安装方法：
出油阀是一个单向阀，在弹簧压力作用下，阀上部圆锥面与阀座严密配合，其作用是在停供时，将高压油管与柱塞上端空腔隔绝，防止高压油管内的油倒流入喷油泵内。出油阀的下部呈十字断面，既能导向，又能通过柴油。出油阀的锥面下有一个小的圆柱面，称为减压环带，其作用是在供油终了时，使高压油管内的油压迅速下降，避免喷孔处产生滴油现象。当环带落入阀座内时则使上方容积很快增大，压力迅速减小，停喷迅速。力士乐液压阀工作时，在喷油泵凸轮轴上的凸轮与柱塞弹簧的作用下，迫使柱塞作上、下往复运动，从而完成泵油任务，泵油过程可分为以下三个阶段。进油过程当凸轮的凸起部分转过去后，在弹簧力的作用下，柱塞向下运动，柱塞上部空间（称为泵油室）产生真空度，当柱塞上端面把柱塞套上的进油孔打开后，充满在油泵上体油道内的柴油经油孔进入泵油室，柱塞运动到下止点，进油结束。供油过程当凸轮轴转到凸轮的凸起部分顶起滚[工业电器网-cnelc]轮体时，柱塞弹簧被压缩，柱塞向上运动，燃油受压，一部分燃油经油孔流回喷油泵上体油腔。当柱塞顶面遮住套筒上进油孔的上缘时，由于柱塞和套筒的配合间隙很小（0.0015-0.0025mm）使柱塞顶部的泵油室成为一个密封油腔，柱塞继续上升，泵油室内的油压迅速升高，泵油压力出油阀弹簧力+高压油管剩余压力时，推开出油阀，高压柴油经出油阀进入高压油管，通过喷油器喷入燃烧室。REXROTH柱塞泵上供油，当上行到柱塞上的斜槽（停供边）与套筒上的回油孔相通时，泵油室低压油路便与柱塞头部的中孔和径向孔及斜槽沟通，油压骤然下降，出油阀在弹簧力的作用下迅速关闭，停止供油。

力士乐现货型号：
A10VS0100DR/31R-PPA12N00 
A10VS0100DFR1/31R-PPA12N00 
博世力士乐液压泵Rexroth的详细信息
A10VSO71DFR1/32R-VPB22U99S2184
A10VS045DFR1/31R-PPA12N00
A10VS0140DFRI/31R-PPB12N00
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A10VSO71DRS/32R-VPB22U99-S2184，1p
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4WRA10W30-2X/G24K4/
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A10VSO28DFR1/31R-PPA12N00
力士乐液压阀A10A2-2.0/
4WRA10W60-2X/G24K4V
A10VSO100DFR1/31R-PPA12N00
A10VSO100DFR1/31R-PPA12NOO
A10VS071DR/31R-PPA12N00
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A10VSO45DFR1/32R-PPB12N00
A10VSO71DFR1/31PRA12N00 S1648
E-A10VSO100DFR/31RPPA12N00
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A10VSO140DFR1/31R-PPB12N00
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A10VSO100DR/31R-PPA12N00
A10VSO140DR/31R-PPB12N00
A10VSO140DFR1/31R-PPB12N00
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A10VSO140DRS/32R-VPB12N00
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A10VSO71DFR1/32R-VPB22U99
A10VSO28DFR1(DR)/31R-PPA12N00
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A10VS071DR/31R-PPA12
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A10VS0100DR/32R-VPB22(12)U99(N00)
HED40A10/315=HED80A20/315
A10VSO71DFR1/31R-PPA12N00
A10VSO045DR/31R-PPA12N00
A10VSO71DR/31R-PPA12N00
A10VSO018DFR1
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A10VSO100DR/31R-PPA12N00
A10VS071DR/31R-PPA12N00 
A10VS045DR/31R-PPA12N00 / 
A10VSO100DRＧ/31R-PPA12N00
A10VSO100DRＧ/31R-PPA12N00
A10VSO100DRＧ/31R-PPA12N00
力士乐液压阀A10VSO71DFR
力士乐液压阀A10VSO28DFR
力士乐液压阀A10VSO140DFR1
A10VS028DR/30R-PPA12N00
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A10VSO100DFLR/31R-PPA12N00
A10VSO100DR/31R-PPA12N00
A10VSO100DR/31R-PPA12N00
A10VSO71DFR1/31R-PPA12N00-S1648
A10VSO45DR/31R-PSC62K02
4WRA10W1-60-22/G24K4/ V
A10VSO140DFR1/31R-PPB12NOO
DEH16P-20-204-2WA100AL
DE16P-20-204-2WA100AL