力士乐螺纹插装阀电磁驱动阀OD150117A000000

力士乐螺纹插装阀电磁驱动阀OD150117A000000 R930062337，德国REXROTH螺纹插装阀电磁驱动阀，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”，7年老店，产品实拍，保证产品原厂原装，价格优惠，售后无忧，欢迎新老客户咨询采购！
 
电磁换向阀在液压系统中的作用是用来实现液压油路的换向、顺序动作及卸荷等。由于电磁铁的推力有限，电磁换向阀应用在流量不大的液压系统中。
电磁换向阀是液压控制系统和电气控制系统之转换元件。它由液压机械中的按钮开关、限位开关、行程开关、压力继电器等电气元件发出信号，使电磁铁通电吸合或断电释放，从而直接控制阀芯移位，来实现油流的沟通、切断和方向变换，来操纵各执行机构的动作。推动故障检查按钮可使滑阀阀芯手推移动。

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。


液压制动系统设计
首先，根据车重、速度、路况等条件，估算工程机械行走制动所需的制动力矩;其次，初步选择系统压力，并据此确定制动盘的直径、制动钳的尺寸等参数。制动盘的直径在能够安装的大空间前提下确定，整车的制动力矩是每个制动器产生的制动力矩之和，而每个制动器上产生的力矩都取决于系统压力、制动缸活塞的尺寸和数量、制动钳的尺寸、制动钳与制动盘之间的摩擦系数等。

根据制动缸的行程和截面积，计算出单侧制动缸所需的油液体积。考虑到在实际使用中，制动器逐渐磨损，为确保安全，应以磨损后的旧制动器进行计算;然后，求得前、后桥制动1次所需的油液总体积:后，按照设计要求，当制动泵不工作时，蓄能器至少应该能够完成紧急制动次数不少于4~5次，将刚得到的油液总.体积扩大5倍，液压泵排量的确定液压泵的排量根据蓄能器的充液时间来确定。为了安全，蓄能器的充液时间长不能超过20s。已知蓄能器无油状态时的容积为V，充满油液时的容积为V3，且蓄能器的工作过程为绝热过程,满足P，Vi=P3 V3， 则一个蓄能器的体积变化量0V= V1- V3。根据系统中蓄能器数量，可求得需要油液的总体积，再根据充液时间，计算出系统流量。又因为发动机的转速是变化的，所以在计算泵的排量时，应该按照发动机在怠速时的转速来考虑，再考虑到泵的容积效率为85%，计算泵的排量q,据此选择合适的制动泵。

目前液压行走系统仅用于低速行驶的工程机械，其作业装备也以液压传动为主，主要是利用了液压元件布置的独立性。但其不适合应用于批量生产的小
轿车以及高速车辆，原因是效率低，油耗高，而且液压元件的生产批量也无法与小轿车相比。

在国外，HST应用于工程机械行走系统的发展十分迅猛，德国、美国、日本等国家无论在基础理论研究还是应用技术研究方面都处于领先地位且拥有世界上的液压元件制造公司和主机制造厂。国外新开发的小型装载机已100%采用HST,并有向大型装载机发展的趋势，如利勃海尔L551装载机;德国林德公司液压驱动叉车在柴油机上加装了电子调速器，实现了整车系统管理;美国萨澳公司的NFPE控制以及德国力士乐公司的DA控制可以实现发动机与液压行走系统的自动联合控制。
在我国，HST在这- -领域的发展也十分迅速，但还面临着一系列问题: 国内液压元件质量差，而国外的液压元件价格又太高，会造成总成本过高;国内技术人员和维修人员对液压传动装置的控制系统还缺乏了解和掌握;静液压系统和发动机的匹配观念不强等。

液压传动系统的优点和存在的问题
1.优点:
(1)液压传动功率密度高，调速性能好，可实现无级调速；
(2)在发动机转速范围内，较低转速时能保持较大的牵引力,起动力矩大；
(3)总体匹配容易，只需改变泵或马达排量就可以得到满意的匹配效果；
(4)液压传动元件位置独立，布置方便灵活；
(5)行走微动性能好，本身具有制动效果；
(6)控制性能好，可实现恒转矩或恒功率调速；
(7)吸振性好,同时具有过载保护装置；
(8)便于实现自动及远距离操纵，操作简单方便。
2.存在问题:
制造加工要求高;未实现国产化，生产批量较小;成本高。

各种行走传动系统比较
工程机械行走系统初主要采用机械传动和液力传动(全液压挖掘机除外)。现在，液压和电传动也出现在工程机械行走驱动装置中，对这一-领域起到了巨大的推动作用。

机械传动
结构简单、工作可靠、成本低、稳态传动效率高并可利用柴油机运动零件的惯性进行作业。但一般只能进行有级变速，并且布局方式受到限制，司机劳
动强度高。因此，机械传动适用于行驶阻力比较稳定的连续作业机械。

2.液力传动
具有分段无级调速能力;输出轴和输入轴之间没有刚性的机械联系，减小了传动系及发动机零件的冲击、振动;变矩器的功率密度大而负荷应力较低;成本不高。这些特点使它广泛应用于大中型铲士、起重、运输等工程机械中。但与液压传动相比，液力传动存在很多缺点:
(1)加速性能较差，不能利用发动机制动；
(2)液力传动缺乏固定速比，不能准确调速；
(3)起动力矩小，低速传动效率低；
(4)液压传动的高效区比液力传动高效区范围广；
(5)变矩器不能反转，倒档需采用机械传动，会引起换挡时的动力中断；
(6)布局受限。
力士乐螺纹插装阀电磁驱动阀OD150117A000000 R930062337
力士乐REXROTH行走机械液压-紧凑型液压系统-插装阀-机械插装阀-螺纹插装阀-电磁驱动阀
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R930069969    OD150575A000000-VEI-016-NC-16A-A-05-0000
R930069970    OD150675A000000-VEI-016-NO-16A-A-06-0000
R930070069    OD150321A000000-VEI-016-NC-16G-A-03-0000
R930070148    OD153117DV00000-VEI-016-NC-12G-D-31-V000
R930070199    OD150321D800000-VEI-S16-NC-16G-D-03-0000
R930070200    OD150521A000010-VEI-016-NC-16G-A-05-0000
R930070203    OD150536DV00000-VEI-016-NC-10A-D-05-V000
R930070261    OD150517D800000-VEI-S16-NC-12G-D-05-0000
R930070262    OD150917D000000-VEI-016-NC-12G-D-09-0000
R930070263    OD150375A000000-VEI-016-NC-16A-A-03-0000
R930070265    OD150719A0DOC00-VEI-016-NC-08S-A-07-0DOC
R930070355    OD150375A800010-VEI-S16-NC-16A-A-03-0000
R930070358    OD153175D000000-VEI-016-NC-16A-D-31-0000
R930070645    OD150521A800010-VEI-S16-NC-16G-A-05-0000
R930070723    OD151017G000000-VEI-016-NO-12G-G-10-0000
R930070835    OD153275C000000-VEI-016-NO-16A-C-32-0000
R930070859    OD153218BP00000-VEI-016-NO-08A-B-32-P000
R930071138    OD153189D800000-VEI-S16-NC-12A-D-31-0000
R930071419    OD153218CV00000-C1_SAMPLE_VEI-016-NO-08&
R930071617    OD150336D000000-VEI-016-NC-10A-D-03-0000
R930071618    OD150336D800000-VEI-S16-NC-10A-D-03-0000
R930071619    OD150436B000000-VEI-016-NO-10A-B-04-0000
R930072585    OD1531183DS2OC1-VESP-08A-12A/00-2A31-N7
R930072920    OD150518A0000T0-VEI-T016-NC-08A-A-05-000
R930072921    OD150518D0000T0-VEI-T016-NC-08A-D-05-000
R930073290    OD153218A0HOC00-VEI-016-NO-08A-A-32-0HOC
R930073292    OD150689A0HOC00-VEI-016-NO-12A-A-06-0HOC
R930073294    OD150118A0HOC00-VEI-016-NC-08A-A-01-0HOC
R930073295    OD150636A0HOC00-VEI-016-NO-10A-A-06-0HOC
R930073300    OD150476A0HOC00-VEI-016-NO-10A-A-04-0HOC
R930073301    OD153136A0HOC00-VEI-016-NC-10A-A-31-0HOC
R930073304    OD150375A8HOC10-VEI-S16-NC-16A-A-03-0HOC
R930073307    OD153218C0HOC00-VEI-016-NO-08A-C-32-0HOC
R930073310    OD150618C0HOC00-VEI-016-NO-08A-C-06-0HOC
R930073313    OD150676A0HOC10-VEI-016-NO-10A-A-06-0HOC
R930073314    OD150121A8HOC00-VEI-S16-NC-16G-A-01-0HOC
R930073342    OD150618A0HOC00-VEI-016-NO-08A-A-06-0HOC
R930073441    OD150436A0HOC00-VEI-016-NO-10A-A-04-0HOC
R930073770    OD153318D100000-VEI-016-NC-08A-D-33-0000
R930073920    OD150518A000030-VEI-016-NC-08A-A-05-0000
R930075659    OD151117A000010-VEI-016-NC-12G-A-11-0000
R930076093    OD150121DP00000-VEI-016-NC-16G-D-01-P000
R930076177    OD150518A0000I0-VEI-I016-NC-08A-A05-0000
R930076178    OD150118A0000I0-VEI-I016-NC-08A-A01-0000
R930076179    OD150518D0000I0-VEI-I016-NC-08A-D05-0000
R930076180    OD150618A0000I0-VEI-I016-NO-08A-A06-0000
R930076181    OD150618B0000I0-VEI-I016-NO-08A-B06-0000
R930076182    OD150518A8000I0-VEI-IS16-NC-08A-A05-0000
R930076206    OD151017A000000-VEI-016-NO-12G-A-10-0000
R930076233    OD150518AS00000-VEI-016-NC-08A-A-05-0000
R930076464    OD C1-VEI7A2T14.M75K31.75NCL6&
R930076579    OD150636GP00000-VEI-016-NO-10A-G-06-P000
R930076729    OD153136DV00000-VEI-016-NC-10A-D-31-V000
R930076887    OD150118A0000L0-VEI-L016-NC-08A-A01-0000
R930076888    OD150518A0000L0-VEI-L016-NC-08A-A05-0000
R930076992    OD150118D0000L0-VEI-L016-NC-08A-D01-0000
R930076993    OD150718D0000L0-VEI-L016-NC-08A-D07-0000
R930077108    OD151018CP00000-VEI-016-NO-08A-C-10-P000
R930077397    OD150718D0AOC00-VEI-016-NC-08A-D-07-0AOC
R930078192    OD150239A000000-VEI-016-NO-08F-A-02-0000
R930078218    OD153218AP00000-VEI-016-NO-08A-A-32-P000
R930078322    OD150518E0000T0-VEI-T016-NC-08A-E-05-00&
R930078395    OD150336E000000-VEI-016-NC-10A-E-03-0000
R930078445    OD153218AV00000-VEI-016-NO-08A-A-32-V000
R930078704    OD150418A0HOC00-VEI-016-NO-08A-A-04-0HO
R930078848    OD150518A0AOC01-VEI-016-NC-08A-A-05-0AOC
R930079171    OD150589AV00000-VEI-016-NC-12A-A-05-V000
R930079399    OD153289A0DOC00-VEI-016-NO-12A-A-32-0DOC
R930079400    OD151121A0DOC00-VEI-016-NC-16G-A-11-0DOC
R930079401    OD153136A0DOC00-VEI-016-NC-10A-A-31-0DOC
R930080149    OD150221AV00000-VEI-016-NO-16G-A-02-V000
R930080150    OD150418AV00000-VEI-016-NO-08A-A-04-V000
R934000104    OD1531183AS800-VEI8A2T06.M18K31.3ANCC21&
R934000107    OD1531183DS800-VEI8A2T06.M18K31.3DNCC21&
R934000679    OD1501173DS000-VEI8A2A09.17K01.3DNCC222&
R934000693    OD1501183IS001 VEI8I2A06.18K01.3INCC218&
R934000704    OD1501193AS000-VEI8A2A06.19K01.3ANCC218&
R934000707    OD1501213AS800-VEI8A2A12M.21K01.3ANCC22&
R934000716    OD1501903IS000-VEI8I2A06.90K01.3INCC218&
R934000718    OD1502171AS000-VEI8A2A09.17K02.1ANAC220&
R934000721    OD1502171BS000-VEI8A2A09.17K02.1BNAC220&
R934000733    OD1502181BS100 VEI8A2A06.18K02.1BNAC220&
R934000739    OD1502181IS001 VEI8I2A06.18K02.1ISNAC21&
R934000747    OD1502181MS100 VEI8I2A06.18K02.1MNAC218&
R934000758    OD1502211CS000-VEI8A2A12.21K02.1CNAC225&
R934000759    OD150221540000-VEI7A2A14.21K02.54NAL630&
R934000762    OD1502901IS000 VEI8I2A06.90K02.1INAC218S
R934000764    OD1503043AS000-VEI8A2B16.04K03.3ANCC218&
R934000766    OD1503043BS000 VEI8A2B16.04K03.3BNCC218S
R934000773    OD1503173AS800-VEI8A2B09M17K03.3ANCC222&
R934000775    OD1506891AS001-VEI8A2A12V89K06.1ANAC225&
R934000779    OD1503183AS000-VEI8A2B06.18K03.3ANCC218&
R934000781    OD1503183BS000 VEI8A2B06.18K03.3BNCC218S
R934000786    OD1503193DS000-VEI8A2B06.19K03.3DNCC218&
R934000787    OD1506891BS001-VEI8A2A12.V89K06.1BNAC22&
R934000792    OD1503213DS000-VEI8A2B12.21K03.3DNCC225&
R934000809    OD1504171CS000-VEI8A2B09.17K04.1CNAC220&
R934000820    OD1504211CS000-VEI8A2B12.21K04.1CNAC225&
R934000821    OD150421540000-VEI7A2B14.21K04.54NAL630&
R934000827    OD1504761AS000-VEI8A2B09.76K04.1ANAC220&
R934000831    OD1504891CS001-VEI8A2B12.V89K04.1CNAC22&
R934000842    OD1505173BS000 VEI8A2A09.17K05.3BNCC222S
R934000844    OD1505173CS100-VEI8A2A09.17K05.3CNCC222&
R934000846    OD1505173DS800-VEI8A2A09M17K05.3DNCC222&
R934000849    OD15051798OC00-VEI8A2A09.17K05.98NCAX18&
R934000850    OD15051798ON00 VEI8A2A09.17K05.98NCAX20S
R934000863    OD1505183A0000 VEI8A2A06.18K05.3ANCC218S
R934000865    OD1505183AS001-VEI8A2A06.18K05.-S8A/12D&
R934000868    OD1505183AS005-VEI8A2A06V18K05.3ANCC218&
R934000875    OD1505183CS003 VEI8A2A06S18K05+S8H/12DC
R934000877    OD1505183CS200-VEI8A2A06.18K05.3CNCC218&
R934000890    OD15051898OC00-VEI8A2A06.18K05.98NCAX18&
R934000893    OD150519310000 VEI8I2A06.19K05.31NCC218&
R934000895    OD1505193AS000 VEI8A2A06.19K05.3ANCC218&
R934000898    OD1505193DS000 VEI8A2A06.19K05.3DNCC218&
R934000902    OD1505213A0000 VEI8A2A12.21K05.3ANCC225S
R934000913    OD C VEI8A2A12M21K05.62NCC630S
R934000914    OD150521750000-VEI7A2A14.21K05.75NCL630&
R934000917    OD15052198OC00-VEI8A2A12.21K05.98NCAX26&
R934000953    OD1506171AS001-VEI8A2A09.17K06.1ANAC220&
R934000956    OD1506171CS000-VEI8A2A09.17K06.1CNAC220&
R934000958    OD15061796OC00-VEI8A2A09.17K06.96NAAX18&
R934000963    OD1506181A0000 VEI8A2A06.18K06.1ANAC218S
R934000969    OD1506181AS300-VEI8A2A06.18K06.1ANAC218&
R934000974    OD1506181BS100 VEI8A2A06.18K06.1BNAC218&
R934000977    OD1506181CS100-VEI8A2A06.18K06.1CNAC218&
R934000978    OD1506181CS200-VEI8A2A06.18K06.1CNAC218&
R934000982    OD1531893AS001-VEI8A2T12.V89K31.3ANCC22&
R934000985    OD15061896OC00-VEI8A2A06.18K06.96NAAX18&
R934000989    OD1506191AS000 VEI8A2A06.19K06.1ANAC218&
R934000991    OD1506191CS000-VEI8A2A06.19K06.1CNAC218&
R934000995    OD1506211A0000 VEI8A2A12.21K06.1ANAC225S
R934000998    OD1506211BS100-VEI8A2A12.21K06.1BNAC225&
R934001001    OD150621540000-VEI7A2A14.21K06.54NAL630&
R934001002    OD15062196OC00-VEI8A2A12.21K06.96NAAX26&
R934001004    OD1506361A0000 VEI8A2A09.36K06.1ANAC220S
R934001015    OD150676190100 VEI8A2A09.76K06.19NAC218S
R934001016    OD1506761AS001-VEI8A2A09.76K06.1ANAC218&
R934001018    OD1506761CS000-VEI8A2A09.76K06.1CNAC220&
R934001019    OD1506761CS100-VEI8A2A09.76K06.1CNAC218&
R934001038    OD1509173AS000-VEI8A2B09.17K09.3ANCC222&
R934001039    OD1509173DS000-VEI8A2B09.17K09.3DNCC222&
R934001051    OD1510171AS000-VEI8A2B09.17K10.1ANAC220&
R934001052    OD1510171CS000-VEI8A2B09.17K10.1CNAC220&
R934001061    OD1510211BS000-VEI8A2B12.21K10.1BNAC225&
R934001067    OD1510921CS000-VEI8A2B06.92K10.1CNAC225&
R934001071    OD151117370000 VEI8A2A09.17K11.37NCC218S
R934001072    OD1511173AS000-VEI8A2A09.U17K11.3ANCC22&
R934001073    OD1511173AS001-VEI8A2A09.V17K11.3ANCC22&
R934001075    OD1511173DS000-VEI8A2A09.U17K11.3DNCC22&
R934001090    OD1512171AS000-VEI8A2A09.U17K12.1ANAC22&
R934001100    OD1512211AS000-VEI8A2A12.U21K12.1ANAC22&
R934001101    OD1512211BS000-VEI8A2A12.U21K12.1BNAC22&
R934001102    OD1512211CS000-VEI8A2A12.U21K12.1CNAC22&
R934001113    OD1531173A0000 VEI8A2T09.17K31.3ANCC222S
R934001115    OD1531173AS001-VEI8A2T09.V17K31.3ANCC22&
R934001116    OD1531173AS800-VEI8A2T09.M17K31.3ANCC22&
R934001119    OD1531173BS000 VEI8A2T09.17K31.3BNCC222S
R934001120    OD1531173DS000-VEI8A2T09.17K31.3DNCC222&
R934001122    OD15311798OC00-VEI8A2T09.17K31.98NCAX18&
R934001125    OD1531183A0000-VEI8A2T06.18K31.3ANCC218S
R934001127    OD1531183AS001-VEI8A2T06.18K31-S8H/12DC
R934001129    OD1531183AS100-VEI8A2T06.18K31.3ANCC218&
R934001131    OD1531183BS000 VEI8A2T06.18K31.3BNCC218S
R934001142    OD15311898OC00-VEI8A2T06.18K31.98NCAX18&
R934001146    OD1531213A0000 VEI8A2T12.21K31.3ANCC225S
R934001150    OD1531213BS000 VEI8A2T12.21K31.3BNCC225S
R934001154    OD153121750000-VEI7A2T14.21K31.75NCL630&
R934001155    OD153121758000-VEI7A2T14.M21K31.75NCL63&
R934001156    OD15312198OC00-VEI8A2T12.21K31.98NCAX26&
R934001158    OD1531363A0000 VEI8A2T09.36K31.3ANCC222S
R934001168    OD1531753BS000 VEI8A2T12.75K31.3BNCC225S
R934001184    OD1532171A0000 VEI8A2T09.17K32.1ANAC220S
R934001186    OD1532171AS001-VEI8A2T09.V17K32.1ANAC22&
R934001189    OD1532171CS000-VEI8A2T09.17K32.1CNAC220&
R934001196    OD1532181A0000 VEI8A2T06.18K32.1ANAC218S
R934001199    OD1532181AS100-VEI8A2T06.18K32.1ANAC220&
R934001200    OD1532181B0000 VEI8A2T06.18K32.1BNAC218S
R934001204    OD15321896OC00-VEI8A2T06.18K32.96NAAX18S
R934001205    OD C VEI7A2A09S17K05.62NCL622&
R934001206    OD1506171DS2OC-VEI8A2A09.S17K06.1DNAC22&
R934001208    OD1506211DS2OC-VEI8A2A12.S21K06.1DNAC22&
R934001212    OD1532211A0000 VEI8A2T12.21K32.1ANAC225S
R934001219    OD15322196OC00 VEI8A2T12.21K32.96NAAX26S
R934001224    OD C-VEI7A2A12.M21K05.62NCC63&
R934001227    OD1506181DS2OC-VEI8A2A06S.18K06.1DNAC21&
R934001235    OD1532171DS2OC-VEI8A2T09.S17K32.1DNAC22&
R934003057    OD1502171AS002-VEI8A2A09.17K02.1ANAC220&
R934003063    OD1503183AS800-VEI8A2B.06M18K03.3ANCC21&
R934003080    OD1505183AS800 VEI8A2A06.M18K05.3ANCC21&
R934003082    OD1505183DS800-VEI8A2A06M18K05.3DNCC218&
R934003105    OD1506761AS000-VEI8A2A09.76K06.1ANAC220&
R934003110    OD1511193AS800-VEI8A2A06.U19K11.3ANCC21&
R934003111    OD1531173DS800-VEI8A2T09.M17K31.3DNCC22&
R934003114    OD1531183DS801-VEI8A2T06.M18K31.3DNCC21&
R934003122    OD153221540000-VEI7A2T14.21K32.54NAL630&
R934003423    OD15053698OC00-VEI8A2A09.36K05.98NCAX18&
R934003424    OD150617180 VEI8A2A09.17K06.18NAC218SEX3
R934003434    OD150518378000 VEI8A2A06M18K05.37NCC218S
R934003486    OD1507183MS000 VEI8I2A06.F18K07.3MNCC21&
R934003758    OD150521760000-VEI7A2A14.21K05.76NCL630&
R934003884    OD150518310000 VEI8I2A06.18K05.31NCC218&
R934003885    OD150618200000-VEI8I2A06.18K06.20NAC218&
R934004160    OD1511213DS000-VEI8A2A12.U21K11.3DNCC22&
R934004319    OD C-VESP-08A-12A/00-2A05-N7
R934004320    OD C-VESP-08A-12A/00-2A85-N7-&
R934004378    OD Z-VESP-08A-12A/00-2A05-N7
R934004411    OD1531363AS001-VEI8A2T09.V36K31.3ANCC22&
R934004493    OD1505893AS001-VEI8A2A12.V89K05.3ANCC22&
R934004542    OD1532181DS2OB-VESP-08A-12A/00-2T32-N7
R934004627    OD C-VESP-16G-16A/00-2A01-N7
R934004628    OD C-VESP-16G-16A/00-2A-N7
R934004630    OD B-VESP-16G-16A/00-2A05-N7
R934004674    OD C-VESP-12G-16A/00-2A05-N7
R934004675    OD B-VESP-12G-16A/00-2A05-N7
R934004749    OD C-VESP-12G-12A/00-2T31-N7
R934004812    OD C-VESP-08A-12A/00-2A05-N7
R934004878    OD1503363DS000-VEI8A2B09.36K03.3DNCC222&
R934004903    OD1532181DS2OC-VESP-08A-12A/00-2T32-N7
R934005046    OD1531173DS100-VEI8A2T09.17K31.3DNCC222&
R934005243    OD1506182DS2OC-VEI8A2A06S18K06.1DNAC218&
R978023991    OD150118320000 VEI8I2A06.18K01.32NCC218S
R978023992    OD150318370000 SZ8 NC 1-2 BI S8
R978023994    OD150418170000 SZ8 NO 1-2 BI S8
R978023996    OD150518310000 SZ8 NC 2-1 BI S8 LF
R978023997    OD150518320000 VEI8I2A06.18K05.32NCC218S
R978023999    OD150618180000 SZ8 NO 2-1 BI S8 MO
R978024000    OD150618200000 SZ8 NO 2-1 BI S8 LF
R978024003    OD153118250000 SZ8 NC 1+2 BI S8 LF
R978024004    OD153118470000 SZ8 NC 1+2 BI S8 MO
R978024007    OD153218190000 SZ8 NO 1+2 BI S8 MO
R978024011    OD150404170000 VEI8A2B16.04K04.17NAC218S
R978024012    OD150404180000 VEI-8A-2B-16-NA
R978024019    OD150521370000 VEI8A2A12.21K05.37NCC226S
R978024024    OD150621170000 VEI8A2A12.21K06.17NAC226S
R978034034    OD1531893AS0 VITON VEI-8A-2T
R987019976    TUBO D15 B. ACUM B.VALV.750KW RE-4-0
R987067733    OD1502211AS000-VEI8A2A12.21K02.1ANAC225&
R987125752    VEI-8A-2T-12-NC-S - OD 15-3121-3BS000
R987172056    VALVE OD1531213700 &
R987195006    VEI-8A-2T-06-NA-S OD15.32.18-17-00
R987198232    VALVE OD1532211AS0 &
R987201460    OD1532171CS0000 VEI-8A-2T-09-NA-S-NSS
R987231423    OD1531173BS0
R987231763    OD1531173AS001
R987233190    OD1505183AS000
R987256974    OD1503173BSO
R987269778    VALVE OD1531183AS000 &
R987280171    VALVE OD1506171AS000 &
R987321208    OD C
R987331918    OD15061818/OD02170130AC HMF
R987349614    VEI-EX OD15313698OC
R987361622    VALVE OD1506181CS200-S01
R987362042    SOLENOID-OPERATED OD1531823CS800
R987363900    SCREW-IN CAR.VALVE OD1506181AS000-S02
R987365139    SCREW-IN CAR.VALVE OD15061818/12VDC SPOL
R987365760    VALVE OD1505183AS000-S01 &
R987365972    SCREW-IN CAR.VALVE OD1505173AS0000
R987365973    SCREW-IN CAR.VALVE OD1505183780000
R987365974    SCREW-IN CAR.VALVE OD1505183IS0000
R987365975    SCREW-IN CAR.VALVE OD150518AS80000
R987365976    SCREW-IN CAR.VALVE OD150521378000
R987365977    SCREW-IN CAR.VALVE OD1505363ASO000
R987365978    SCREW-IN CAR.VALVE OD1506181ASO000
R987365979    SCREW-IN CAR.VALVE OD1506181IS0000
R987365980    SCREW-IN CAR.VALVE OD1506361AS0000
R987365981    SCREW-IN CAR.VALVE OD1506361ASO000
R987365982    SCREW-IN CAR.VALVE OD153118370000
R987365983    SCREW-IN CAR.VALVE OD1531183ASO000
R987365984    SCREW-IN CAR.VALVE OD1531753BS0000
R987365985    SCREW-IN CAR.VALVE OD1532181AS0000
R987365986    SCREW-IN CAR.VALVE OD1532181ASO000
R987365987    SCREW-IN CAR.VALVE OD1532211AS0000
R987366100    SPECIAL VALVE OD1506181AS0000
R987369760    VALVE OD1506171AS001-S01
R987386722    VALVE OD1531183DS801-S01
R987389264    VEI-8A-2T-10A-NC-S-NSS, N0 OD1531363AS00
R987391038    VEI8A2A09.17K06.17NAC218SXX3 OD15061717
R987391040    OD1504891BS0000 VEI-8A-2B-12A-NA-S-NSS,N
R987391041    OD1503893DS000 VEI-8A-2B-12A-NC-S-NSS, N
R988002282    OD1505183AS0000 VEI8A2A06.18K05.3AN -
力士乐REXROTH行走机械液压-紧凑型液压系统-插装阀-机械插装阀-螺纹插装阀
R901208447    OD21010304-VSTXX09-17X03
R934001238    OD21010305-VSTXX12-21X03
R901109830    OD210103360000-VSTXX09-36X03
R901109366    OD21010356-VSTXX06-18X03
R988002556    OD21010356000 ST-C-06
R901109837    OD210103750000-VSTXX12-75X03
R901109832    OD210103890000-VSTXX12-89X03
R930072460    OD210103890V00-VSTXX12-89X03-V
R901088720    OD21010404-VSTXX09-17X04
R901128469    OD21010405-VSTXX12-21X04
R901109831    OD210104360000-VSTXX09-36X04
R901109367    OD21010456-VSTXX06-18X04
R901109838    OD210104750000-VSTXX12-75X04
R901109834    OD210104890000-VSTXX12-89X04
R930056068    OD21010556-VSTXX06CA.18X04
R934001254    OD210418030000-VSTUX06-18X03
R934001255    OD210418040000 VSTUX06CA.18X04
R934001256    OD210518030000-VSTUX03-18X03
R934001258    OD210618030000-VSTUX04-18X03
力士乐REXROTH行走机械液压-紧凑型液压系统-插装阀-电磁插装阀-电动比例阀-2 通双重锁定，常闭
R930077411    OD95061903AOB0-VEPN-08A-16/00-020-Q06-N&
R934001162    OD950689720000-VEPN-12A-16/25-070-Q6-N7
R901113761    OD953118030000-VEP5A2T06.18K31.03NAP910&
R901126864    OD953118040000-VEP5A2T06.18K31.04NAP910&
力士乐REXROTH行走机械液压-紧凑型液压系统-插装阀-机械插装阀-流量控制-2 通，压力补偿，全部可调-流量控制阀
R901106646    040202048520000-VRFB-10A-V-20
R930055368    04020204852000A-VRFB-10A-V-20
R901095981    040202048540000-VRFB-10A-V-40
R930055371    04020204854000A-VRFB-10A-V-40
R901106643    040202408520000-VRFB-10A-M-20
R930055372    04020240852000A-VRFB-10A-M-20
R930055373    04020240854000A-VRFB-10A-M-40
R930069707    04020240854001A-VRFB-10A-M-40-2BAR
R934003778    ON -VRFB-10A-C-G12-V-40
R934000622    ON0502400340S0-VRFB-10A-C-ACC-G12-40
力士乐REXROTH行走机械液压-紧凑型液压系统-插装阀-机械插装阀-流量控制-2 通，压力补偿，全部可调-流量控制阀
R930000009    040701035750000-VRFE-12A-50
力士乐REXROTH行走机械液压-紧凑型液压系统-插装阀-机械插装阀-流量控制-3 通，压力补偿，全部可调-流量控制阀
R901106674    040402048520000-VRFD-10A-V-20
R930055365    04040204852000A-VRFD-10A-V-20
R901106675    040402048540000-VRFD-10A-V-40
R930055362    04040204854000A-VRFD-10A-V-40
R901106672    040402408520000-VRFD-10A-M-20
R930055366    04040240852000A-VRFD-10A-M-20
R901106673    040402408540000-VRFD-10A-M-40
R930006092    040404035750000-VRFD-12A-50
R930006093    040404045750000-VRFD-12A-V-50
R934003779    ON -VRFD-10A-C-G38-V-20
力士乐REXROTH行走机械液压-紧凑型液压系统-插装阀-机械插装阀-流量控制-分流阀和集流阀-流量控制阀
R901096072    040501008502000-DRFN-10A-02
R901096079    040501008504000-DRFN-10A-04
R930000083    040501008504010-DRFN-10A-04-01
R901096080    040501008508000-DRFN-10A-08
R901096083    040501008516000-DRFN-10A-16
R901096085    040501008525000-DRFN-10A-25
R901096086    040501008530000-DRFN-10A-30
R901096087    040501008540000-DRFN-10A-40
R930000091    040501008550000-DRFN-10A-50
R901096089    040502002704000-DRFN-16A-04
R930053926    04050200270400A-DRFN-16A-04
R901096090    040502002706000-DRFN-16A-06
R930053927    04050200270600A-DRFN-16A-06
R901096091    040502002709000-DRFN-16A-09
R930053928    04050200270900A-DRFN-16A-09
R901096092    040502002713000-DRFN-16A-13
R930053929    04050200271300A-DRFN-16A-13
R901096093    040502002716000-DRFN-16A-16
R930053931    04050200271600A-DRFN-16A-16
R930000099     V00-DRFN-16A-16-65/35-V
R930066027    BP17076_00-DRFN-10A-30
R930079243    BP20051_00-DRFN-12A
R930079394    BP20057_00-DRFN-12A-90L
R930079395    BP20058_00-DRFN-12A-60L
R934001267    ON0801000204S0-DRFN-10A-C-ACC-G38-04
R934001273    ON0802000516S0-DRFN-16A-C-ACC-G1-16
力士乐REXROTH行走机械液压-紧凑型液压系统-插装阀-机械插装阀-溢流阀和减压阀-直动式导向提升阀类型
R901126917    041149032005000-VSBN-08F-05
R901113602    041149032010000-VSBN-08F-10
R930000222    041149032010010-VSBN-08F-10-01
R901113604    041149032020000-VSBN-08F-20
R930000224    041149032020010-VSBN-08F-20-01
R930067598     V80-VSBN-08A-35-88-FKM
R901113600    041149045635000-VSBN-08A-V-35
R901113601    041149735635000-VSBN-08A-S-35
R901191831    041155038505000-VSBN-10A-05
R901113609    041155038510000-VSBN-10A-10
R930064943     V00-VSBN-10A-10-VITON
R901113610    041155038520000-VSBN-10A-20
R901115702    041155038535000-VSBN-10A-35
R930000255    041155038535010-VSBN-10A-35-01
R930058262    041155048535000-VSBN-10A-35-V
R901113605    041149032035000-VSBN-08F-35
R901113598    041149035605000-VSBN-08A-05
R930061036    041149035605010-VSBN-08A-05-35-BAR
R901113599    041149035610000-VSBN-08A-10
R901097728    041149035620000-VSBN-08A-20
R930067594     V10-VSBN-08A-20-170BC-FKM
R930067595     V20-VSBN-08A-20-150BC-FKM
R930067599     V80-VSBN-08A-20-88-FKM
R901091914    041149035635000-VSBN-08A-35
R930067596     V00-VSBN-08A-35-FKM
R930053564    04116903560500A-VSBN-08S-05
R930053569    04116903561000A-VSBN-08S-10
R930071743    04116903561006A-VSBN-08S-10
R930053574    04116903562000A-VSBN-08S-20
R930007706    041169035635000-VSBN-08S-35
R930070582    04116903563500A-VSBN-08S-35
R930054093    04116903563501A-VSBN-08S-35-01-A
R930073324    04116903563502A-VSBN-08S-35-240B
R930059091    055372005401000 VSO-DE38-VSBN-08A-142B-&
R930077822    055372005401020-VSO-DE38-VSBN-08A-142B
R930006797    08463410054000B A-VBSO-DE-VSBN-VFVRPFMA&
R930066612    0M280380572000A-A-VRFC2-VEI-VSBN-LS-VU1&
R930067634    0M360370040000C-VRFC3-VSBN-V-VEI2A-NA-3&
R930069286    0M360370050000B-VRFC3-VSBN-VEI-A2-NA-10&
R930066853    0M380340030000C-VRFC3-VSBN-M-BPE-NA-12-C
R930069292    0M380340040000C-VRFC3-VSBN-M-BPE-NA-34-C
R930067639    0M380370020000C-VRFC3-VSBN-V-BPE-NA-38-C
R930067628    0M380370040000B-VRFC3-VSBN-V-BPE-NA-34-B
R930067641    0M380380020000A-VRFC3-VSBN-D-BPE-NA-38-A
R930069293    0M380380030000C-VRFC3-VSBN-D-BPE-NA-12-C
R930067642    0M431280032000D-A-VRFC3C-VEI-VSBN-2P-12&
R930067643    0M431280033500A-A-VRFC3C-VEI-VSBN-2P-12&
R930067645    0M431280043500A-A-VRFC3C-VEI-VSBN-2P341&
R930069299    0M431280052000E-A-VRFC3C-VEI-VSBN-2P100&
R930069300    0M431280053500A-A-VRFC3C-VEI-VSBN-2P-10&
R930067636    0M432080032000D-A-VRFC3C-VEI-VSBN-PT122&
R930067646    0M432080033500D-A-VRFC3C-VEI-VSBN-PT123&
R930067635    0M432080043500A-A-VRFC3C-VEI-VSBN-PT-34A
R930069298    0M432080063500A-A-VRFC3C-VEI-VSBN-PT-11&
R930080220    BP20074_00_VBSODE-78-FCB-VSBN-08A-14
工程机械是装备工业的重要组成部分。概括地说，凡土石方施工工程、路面建设与养护、流动式起重装卸作业和各种建筑工程所需的综合性机械化施工工程所必需的机械装备，称为工程机械。
它主要用于建设工程、交通运输建设，能源工业建设和生产、矿山等原材料工业建设和生产、农林水利建设、工业与民用建筑、城市建设、环境保护等领域。
中国工程机械与其他各国比较还增加了铁路线路工程机械、叉车与工业搬运车辆、装修机械、电梯、风动工具等行业。

中国工程机械行业产品范围主要从通用设备制造和专用设备制造业大类中分列出来。产品范围涵盖了工程机械大行业18大类产品，这18大类产品，包括挖掘机械，铲土运输机械，工程起重机械，工业车辆，压实机械，桩工机械，混凝土机械，钢筋及预应力机械，装修机械，凿岩机械，气动工具，铁路路线机械，工程机械，电梯与扶梯，工程机械专用零部件等。

普通重工工程机械
①挖掘机械 　如单斗挖掘机（又可分为履带式挖掘机和轮胎式挖掘机）、多斗挖掘机（又可分为轮斗式挖掘机和链斗式挖掘机）、多斗挖沟机（又可分轮斗式挖沟机和链斗式挖沟机）、滚动挖掘机、铣切挖掘机、隧洞掘进机（包括盾构机械）等。
②铲土运输机械 　如推土机（又可分为轮胎式推土机和履带式推土机）、铲运机（又可分为履带自行式铲运机、轮胎自行式铲运机和拖式铲运机）、装载机（又可分为轮胎式装载机和履带式装载机、平地机（又可分为自行式平地机和拖式平地机）、运输车（又可分为单轴运输车和双轴牵引运输车）、平板车和自卸汽车等。
③起重机械 　如塔式起重机、自行式起重机、桅杆起重机、抓斗起重机等。
④压实机械 　如轮胎压路机、光面轮压路机、单足式压路机、振动压路机、夯实机、捣固机等。
⑤桩工机械 　如钻孔机、柴油打桩机、振动打桩机、破碎锤等。
⑥钢筋混凝土机械 　如混凝土搅拌机、混凝土搅拌站、混凝土搅拌楼、混凝土输送泵、混凝土搅拌输送车、混凝土喷射机、混凝土振动器、钢筋加工机械等。
⑦路面机械 　如平整机、道碴清筛机等。
⑧凿岩机械 　如凿岩台车、风动凿岩机、电动凿岩机、内燃凿岩机和潜孔凿岩机等。
⑨其他工程机械 　如架桥机、气动工具（风动工具）等。

机械设备种类繁多。机械设备运行时，其一些部件甚至其本身可进行不同形式的机械运动。机械设备由驱动装置、变速装置、传动装置、工作装置、制动装置、防护装置、润滑系统、冷却系统等部分组成。
机械行业的主要产品包括以下12类：
（1）农业机械：拖拉机、播种机、收割机械等。
（2）重型矿山机械：冶金机械、矿山机械、起重机械、装卸机械、工矿车辆、水泥设备等。
（3）工程机械：铲土运输机械、压实机械、混凝土机械等。
（4）石化通用机械：石油钻采机械、炼油机械、化工机械、泵、风机、阀门、气体压缩机、制冷空调机械、造纸机械、印刷机械、塑料加工机械、制药机械等。
（5）电工机械：发电机械、变压器、、高低压开关、电线电缆、蓄电池、电焊机、家用电器等。
（6）机床：金属切削机床、锻压机械、铸造机械、木工机械等。
（7）汽车：载货汽车、公路客车、轿车、改装汽车、摩托车等。
（8）仪器仪表：自动化仪表、电工仪器仪表、光学仪器、成分分析仪、汽车仪器仪表、电料装备、电教设备、照相机等。
（9）基础机械：轴承、液压件、密封件、粉末冶金制品、标准紧固件、工业链条、齿轮、模具等。
（10）包装机械：包装机、装箱机、输送机等。
（11）环保机械：水污染防治设备、大气污染防治设备、固体废物处理设备等。
（12）矿山机械
工程机械的分类
（1）挖掘机械、（2）铲土运输机械、（3）工程起重机械、（4）工业车辆、（5）压实机械、（6）路面机械、（7）桩工机械、（8）混凝土机械、（9）钢筋和预应力机械、（10）装修机械、（11）凿岩机械、（12）气动工具、（13）铁路线路机械、（14）掘进机械、（15）市政工程与环卫机械、（16）工程机械、（17）电梯与扶梯、（18）工程机械专用零部件、（19）其它专用工程机械

液压系统的维护
1、选择适合的液压油
液压油在液压油系统中起着传递压力、润滑、冷却、密封的作用，液压油选择不恰当是液压系统早期故障和耐久性下降的主要原因。应按随机《使用说明书》中规定的牌号选择液压油，特殊情况需要使用代用油时，应力求其性能与原牌号性能相同。不同牌号的液压油不能混合使用，以防液压油产生化学反应、性能发生变化。深褐色、乳白色、有异味的液压油是变质油，不能使用。
2、定期保养注意事项
目前有的工程机械液压系统设置了智能装置，该装置对液压系统某些隐患有警示功能，但其监测范围和准确程度有一定的局限性，所以液压系统的检查保养应将智能装置监测结果与定期检查保养相结合。
3、防止固体杂质混入液压系统
清洁的液压油是液压系统的生命。液压系统中有许多精密偶件，有的设阻尼小孔或缝隙等。若固体杂质入侵将造成精密偶件拉伤，发卡、油道堵塞等，危及液压系统的安全运行。一般固体物质入侵途径有：液压油不洁；加油工具不洁；加油和维修、保养不慎；液压元件脱屑等。
防止空气和水入侵液压系统
4.防止空气入侵液压系统
在常压常温下液压油中含有容积比为6%~8%的空气，压力降低时空气会从油中游离出来，气泡破裂使液压元件“气蚀”，产生噪声。大量的空气进入油液中将使“气蚀”现象加剧，液压油压缩性增大，工作不稳定，降低工作效率，执行元件出现“爬行”等不良后果。另外，空气还会使液压油氧化，加速其变质。
防止水入侵液压系统
液压油中含有过量水分会使液压元件锈蚀，油液乳化变质、润滑油膜强度降低，加速机械磨损。除了维修保养时要防止水分入侵外，还要注意储油桶不用时要拧紧盖子，*好倒置放置；含水量大的液压油要经多次过滤，每过滤一次要更换一次烘干的滤纸。在没有专用仪器检测时，可将液压油滴到烧热的铁板上，没有蒸气冒出并立即燃烧方能加注。
5.工程机械作业要柔和平顺
工程机械作业应避免粗暴，否则必然产生冲击负荷，使工程机械故障频发，大大缩短其使用寿命。作业时产生的冲击负荷，一方面会使工程机械结构早期磨损、断裂、破碎，另一方面又使液压系统中产生冲击压力，冲击压力又会使液压元件损坏、油封和高压油管接头与胶管的压合处过早失效漏油或爆管、溢流阀频繁动作使油温上升。我单位新购一台UH171正铲挖掘机，作业中每隔4~6天斗门油管就要漏油或爆裂。油管是随机进口的纯正品，经检测没有质量问题。通过现场观察，发现是斗门开、闭时强烈撞击限位块、门框所致。要有效地避免产生冲击负荷：必须严格执行操作规程；液压阀开、闭不能过猛、过快；避免使工作装置构件运动到极限位置产生强烈击；没有冲击功能的液压设备不能用工作装置（如挖掘机的铲斗）猛烈冲击作业对象以达到破碎的目的。还有一个值得注意的问题：操作手要保持稳定。因为每台设备操纵系统的自由间隙都有一定差异，连接部位的磨损程度不同其间隙也不同，发动机及液压系统出力的大小也不尽相同，这些因素赋予了设备个性，只有使用该设备的操作手认真摸索，修正自己的操纵动作以适应设备的个性，经过长期作业后才能养成符合设备个性的良好操作习惯。工程机械行业坚持定人定机制度，这也是因素之一。