REXROTH减压插装阀LC40DR40E7X/

REXROTH减压插装阀LC40DR40E7X/，德国力士乐二通插装阀；
力士乐REXROTH二通插装阀，压力控制功能
LC..DR（插装阀）
规格 16 … 63
*大流量 1600 l/min
规格 16 … 63
用于压力功能的二通插装阀为先导式座阀或滑阀。设计为插装阀的功率单元安装在按照 DIN ISO 7368 进行标准化的接收孔内，且使用控制盖闭合。
用于手动或电动比例压力调节的先导控制阀作为先导阀集成到控制盖内或安装在控制盖上，其安装尺寸符合 DIN 24 340。
通过将插装阀与控制盖组合，可以实现不同的压力功能。
减压功能
静止位置开启
用于减压功能的插装阀被设计为无面积差的滑阀（在油口 B 处无有效面积）。
作为先导控制阀，应使用具有压力溢流功能的相同盖类型（型号 LFA..DB...）。
油口 A 处的有效压力经先导油供油节流孔引入到阀芯的弹簧侧。在性能限制和先导控制阀设定的压力下，阀芯由弹簧力进行压力补偿并保持在开启位置，以实现从油口 B 到油口 A 的自由流动。
当达到调定压力时，阀芯闭合并且油口 A 处的压力将根据压力-流体特性降低。
 

REXROTH减压插装阀LC40DR40E7X/，购买进口液压、气动、自动化控制工业配件，认准“上海韦米机电设备有限公司”，保证原装产品，品质保障，售后无忧，批量零售，价格优惠，常用产品现货供应。欢迎新老客户咨询采购！

插装阀在液压系统中的应用.
插装阀具有内阻小，结构简单，工作可靠，标准化程度高，对于大流量、高压力、较复杂的液压系统可以显著的减小尺寸和重量等特点;而实心胎硫化机组液压系统工作时需要大流量、高压力油，因而，此系统可以应用插装阀满足要求。
一、
插装阀的工作原理及特点
插装阀是另一类液压控制阀的统称。其基本核心元件是一种液控型、单控制口的装于油路主级中的两通液阻单元(故又称二通插装阀)。将一一个或若干个插入元件进行不同的组合，并配以相应的先导控制级，可以组成插装阀的各种控制功能单元。比如方向控制功能单元、压力控制单元、流量控制单元、复合控制功能单元。
插装阀具有以下特点:内阻小，适宜大流量工作，阀口多数采用锥面密封，因而泄漏小，对于乳化液等地粘度的工作介质也适宜，结构简单、工作可靠、标准化程度高;对于大流量、高压力、较复杂的液压系统可以显著的减小尺寸和重量。
其结构:先导阀，控制盖板，插装件。
它是由插入元件、控制盖板、通道块三大部分组成。插入元件有阀芯、阀套、弹簧和密封件组成;控制盖板上根据插装阀的不同控制功能，安装有相应的先导控制级元件;通道块既是嵌入插入元件及安装控制盖板的基础阀体，又是主油路和控制油路的连通体。其中A、B为主油路通口，C为控制油路通口。A、B、C油口的压力和作用面积分别为PA、PB、PC和A1、A2、A3，A3=A1+A2， Fs为弹簧作用力。
二通插装阀通过不同的盖板和各种先导阀组合，便可构成方向控制阀、压力控制阀和流量控制阀。
1、插装阀构成压力控制阀
根据插装阀的工作原理当PAA1+PBA2 >PCA3+FS时，阀芯开启，油路A、B接通。插装阀C14，当电磁阀得电时，插装阀C14的C口直接通油箱，其C口压力为零。由此可知油路A、B接通，当A口的压力大于弹簧力的时候，系统压力油回油箱，所以此插装阀起溢流阀的作用，控制油缸径油口压力。
2、插装阀构成方向控制阀
由液压动作程序表可知，同时得电,来控制主油缸上行运动。当两者同时得电时插装阀C11、C13的C口通油箱PA>FS时,A、B口直接相通，油液可从A流向B口;当只有一个电磁阀得电时，主油缸下行运动。其中C13的PA<PB,阀芯开启，油液可从B流向A。此二处插装阀起到了单向阀的作用。
3、插装阀构成流量控制阀
在阀的顶盖上有阀芯升高限位装置通过调节限位装置的位置，便可调节阀口通流截面的大小，从而调节了流量。通过调节流量，可调节主油缸的下行速度。此插装阀作节流阀。
三、
插装阀在液压系统的简单应用，通过更为复杂的组合，可以实现更多的液压阀的功能。通过组合，插装阀可作为压力控制阀(顺序阀、减压阀)、流量控制阀(单向节流阀、节流阀)、方向控制阀(调速阀、液控单向阀、两位两通换向阀等)以及复合阀。
力士乐REXROTH插装阀，压力作用LC..DR
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力士乐REXROTH插装阀控制盖板
力士乐REXROTH插装阀，压力作用，插装阀盖板LFA..DB
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R901272628 LFA25DB3-7X/315/12
R900358416 LFA25DB4-6X/200
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R901220151 LFA25DB4-7X/200
R900717653 LFA25DB4-7X/315
R901356620 LFA25DB4-7X/420
R900947690 LFA25DB2-71/025
R901307149 LFA25DB2-71/025/12
R900929711 LFA25DB2-71/025=LB
R901012473 LFA25DB2-71/025V
R900941129 LFA25DB2-71/025X12
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R900912754 LFA25DB2-71/050
R900949043 LFA25DB2-71/050/12
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R900944201 LFA25DB2-71/050V
R900618339 LFA25DB2-71/050V/12
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R900912758 LFA25DB2-71/100
R900932361 LFA25DB2-71/100/12
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R901215934 LFA25DB2-71/100X00
R900912760 LFA25DB2-71/200
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R900558929 LFA32DB2-6X/100=LB
R900532080 LFA32DB2-6X/100D00/12
R900576584 LFA32DB2-6X/100D15
R900591003 LFA32DB2-6X/100V
R900365651 LFA32DB2-6X/100V/12
R900364697 LFA32DB2-6X/200
R900366791 LFA32DB2-6X/200/12
R900577835 LFA32DB2-6X/200=LB
R900596976 LFA32DB2-6X/200D00
R900549759 LFA32DB2-6X/200D10
R900501786 LFA32DB2-6X/200F15D10
R900549980 LFA32DB2-6X/200F15D12
R900547693 LFA32DB2-6X/200F24D24
R900573078 LFA32DB2-6X/200F25D25
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R900350266 LFA32DB2-6X/315
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R900558930 LFA32DB2-6X/315=LB
R900517697 LFA32DB2-6X/315F15
R900436768 LFA32DB2-6X/315V
R900383910 LFA32DB2-6X/315V/12
R900355515 LFA32DB2-6X/420
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R900520309 LFA32DB2-6X/420V
R900376941 LFA32DB2-6X/420V/12
R900935399 LFA32DB2-7X/025
R901212548 LFA32DB2-7X/025JV
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R900912763 LFA32DB2-7X/050
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R900963743 LFA32DB2-7X/050V/12
R900912762 LFA32DB2-7X/100
R901264757 LFA32DB2-7X/100-085
R900932372 LFA32DB2-7X/100/12
R901089443 LFA32DB2-7X/100D00
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R900711195 LFA32DB2-7X/100V
R900912770 LFA32DB2-7X/200
R900978506 LFA32DB2-7X/200-150
R900956271 LFA32DB2-7X/200/12
R901074586 LFA32DB2-7X/200D00
R901178654 LFA32DB2-7X/200F10D12
R901143239 LFA32DB2-7X/200J
R901293904 LFA32DB2-7X/200JV
R901347272 LFA32DB2-7X/200P145/V
R900939615 LFA32DB2-7X/200V
R983045568 LFA32DB2-7X/200VIN010
R900912768 LFA32DB2-7X/315
R900953446 LFA32DB2-7X/315/12
R900973108 LFA32DB2-7X/315=LB
R901014011 LFA32DB2-7X/315D10
R900958375 LFA32DB2-7X/315F00
R900972856 LFA32DB2-7X/315F00D10
R900246097 LFA32DB2-7X/315F15
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R900912769 LFA32DB2-7X/420
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R900940858 LFA32DB2-7X/420/12
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R901006958 LFA32DB2-7X/420D10
R900976265 LFA32DB2-7X/420J
R901190285 LFA32DB2-7X/420P290
R901239415 LFA32DB2-7X/420P330
R901239736 LFA32DB2-7X/420P330V
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R901429750 LFA32DB2-7X/420P380
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R901223335 LFA32DB2-7X/420P400
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R900969018 LFA32DB2-7X/420V
R901404865 LFA32DB2-7X/450P450
R901394403 LFA32DB2-7X/450P490
R901437459 LFA32DB2-7X=100
R900974243 LFA32DB2-7X=200=LB
R900522212 LFA32DB3-6X/050
R900425916 LFA32DB3-6X/100
R900437268 LFA32DB3-6X/200
R900437266 LFA32DB3-6X/200
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R900939238 LFA32DB3-7X/315
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R900973108 LFA32DB2-71/315=LB
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R900359299 LFA40DB2-6X/100
R900519324 LFA40DB2-6X/100/12
R900558942 LFA40DB2-6X/100=LB
R900918851 LFA40DB2-6X/100D12
R900513046 LFA40DB2-6X/100V
R900395378 LFA40DB2-6X/100V/12
R900354459 LFA40DB2-6X/200
R900470922 LFA40DB2-6X/200/12
R900549769 LFA40DB2-6X/200F15D15
R900547724 LFA40DB2-6X/200F25D25
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R900358421 LFA40DB2-6X/315
R900451878 LFA40DB2-6X/315/12
R900524076 LFA40DB2-6X/315F15
R900598040 LFA40DB2-6X/315V
R900377326 LFA40DB2-6X/315V/12
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R901237883 LFA40DB2-7X/200-180
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R901162908 LFA40DB2-7X/315P160
R901167516 LFA40DB2-7X/315P180
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数控液压系统的通过改变压强增大作用力。一个完整液压系统由五个部分组成，即动力元件、执行元件、控制元件、辅助元件（附件）和液压油。数控液压控制系统要使液压系统输出满足特定的性能要求（特别是动态性能）。数控液压系统常用的控制方式可分为泵控式系统和阀控式系统两种。

数控液压系统一般可分为三类:一是用计算机通过D/A转换及伺服放大器来控制伺服阀(或比例阀)。另一种是由计算机控制脉宽调制放大器，并操纵高速开关阀工作，第三种是由计算机发出脉冲序列，经驱动电源功率放大后，直接控制带步进电机的液压阀动作。
*种控制方式一般都采用闭环控制才能满足要求，若采用伺服控制，其特点是控制精度高、频率响应快，但价格昂贵。若采用比例控制，由于比例电磁铁性能所限，使其滞环、线性度、频响等均受影向。
后面两种控制方式:脉宽调制放大器+高速开关阀和由驱动电源+步进电机带动的阀都叫直接式数字阀(简称数字阀)。由数字阀组成的数控液压系统通常采用开环控制便能满足精度要求。因此，这种数控液压系统广泛应用于机床、工程机械以及石油化工等行业的机械设备。

全闭式数控液压系统是一种以数控双向变量泵供油的、闭式回路的、分工况功率匹配的、微机闭环控制的、集节能与控制于一体的机电液一体化节能系统。
采用闭式容积调速回路，不存在节流阀、溢流阀和换向阀，其结构组成比传动液压系统简化，减少了阀口和管路的能量损失；采用数控双向变量泵供油、分工况功率匹配技术，使系统处于*高效率下工作；采用微机测控技术的多传感器闭环监控系统可获得系统佳综合性能。
系统组成
根据负载运动形式，全闭式数控液压系统可以组成泵控马达系统，也可以组成泵控缸系统。与传统闭式容积调速回路一样，可以以变量泵-定量马达、定量泵-变量马达或变量泵-变量马达形式工作。采用数控双向变量泵－变量马达容积调速液压系统。

不同的机床液压系统有不同的功用。像磨床的液压系统是为了保证机床的平稳运行，减小工作面运行的冲击力；而锯床是用液压系统升降切割速度和夹紧工件用的。
液压系统的优点1、液压传动的各种元件，可以根据需要方便、灵活地来布置。2、重量轻、体积小、运动惯性小、反应速度快。3、操纵控制方便，可实现大范围的无级调速（调速范围达2000：1）。4、可自动实现过载保护。5、一般采用矿物油作为工作介质，相对运动面可自行润滑，使用寿命长。6、很容易实现直线运动。7、很容易实现机器的自动化，当采用电液联合控制后，不仅可实现更高程度的自动控制过程，而且可以实现遥控。

力士乐REXROTH液压元件应用行业：注塑机、吹塑机、橡胶和发泡机、陶瓷压机、同步折弯机(折板机),、剪板机(剪床）、冲切/步冲、金属压力机、弯曲/锯床、机床、食品机械、皮革/鞋机、木材/造纸机械、钢铁业/铸造、压铸机/挤压机、电厂、生态能源（风能-水力-太阳能）设备、油和天然气工业设备、混凝土泵、路机、钻井/开采设备、起重机、升降机/叉车、推土机、道路，隧道，水坝工程设备、压缩机、街道维修设备、模拟器/娱乐设备、卡车、铁路工程设备、航空工业设备、船舶/航海工业设备、打谷机/喷洒机、拖拉机/收割机。