• REXROTH螺纹插装阀电磁阀R930058697

    详细信息

     品牌:REXROTH  型号:R930058697  材质:铸铁  
     连接形式:外螺纹  类型:直动式  公称通径:6 mm 
     适用介质:油品  流动方向:单向  零部件及配件:阀体  
     用途:调压  标准:德标  形态:柱塞式  
     压力环境:高压  工作温度:常温   
    REXROTH螺纹插装阀电磁阀R930058697 OD150118A000000-VEI-016-NC-08A-A-01-0000,德国力士乐螺纹插装阀电磁阀,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!
     

     
    二位四通电磁换向阀工业元件图片(堵住其中二口B和T口,即为二位二通阀)。二位二通电磁换向阀在液压系统中的典型应用是与溢流阀并联组成卸荷回路。是利用二位二通电磁换向阀的卸荷回路。1为液压泵,2为溢流阀,3为二位二通电磁换向阀,4三位四通双电控“O”型中位电磁换向阀,5为液压缸。当二位二通电磁换向阀3通电时,泵排出的液压油以接近零压状态流回油箱以节省动力并避免油温上升。注意该回路不适宜大流量的液压系统。

    液压行走系统的组成和形式
    工程机械液压行走系统的要求和基本组成
    工程机械作业时牵引力和车速的变化范围大,并且负载变化剧烈、频繁、工作条件苛刻、温差大、泥土粉尘多,因而对液压行走系统有如下要求:
    (1)高功率密度;
    (2)能耐受相对恶劣的工作环境和由于油箱容量限制而出现的高的油温;
    (3)泵需具备双向变量的能力,泵和马达均应有可逆性;
    (4)使用可靠、耐久、寿命长; 
    (5)体积小、结构紧凑、价格低;
    (6)噪声振动低。

    液压行走机械的基本组成;
    定量马达-冲洗溢流阀-真空压力表-邮箱-散热器旁通阀-流量控制阀-控制手柄-双向变量泵-伺服控制阀-油缸-多功能阀-补油泵-补油溢流阀-回路冲洗阀。

    液压行走系统的基本型式
    根据不同的分类方法,液压行走系统的基本型式主要有以下几种。
    1.开式和闭式系统
    按油液循环方式的不同,可分为开式系统和闭式系统。
    (1)开式系统:系统结构简单,构成灵活,但油箱体积大,油液常与空气接触,工作机构运动不平稳;要在回油路上加背压以提高系统的稳定性;换向过程中会出现液压冲击和能量损失;系统效率低,只是在一些小型车辆 上偶尔采用带有平衡背压的开式回路。
    (2)闭式系统:结构紧凑,传动平稳性好。内设补油泵,以补偿系统的泄漏并对油液冷却,同时也为控制机构和某些低压工作的辅助机构提供动力。工作机构的变速和换向通过调节泵或马达的变量机构实现,避免了在开式系统换向过程中所出现的液压冲击和能量损失;系统效率较开式系统高。

    2.高速和低速方案
    按驱动轮是否直接由液压马达驱动,可分为低速和高速两种方案。
    (1)低速方案:低速大扭矩液压马达直接驱动车轮。安装空间小:功率损失小和机械噪声低;降低了驱动轮的转动惯量,有利于提高系统的调节品质和减少冲击负荷。但马达要承受各种径向和轴向载荷。
    (2)高速方案:采用高速马达,通过减速器减速来提高输出转矩,利用中间传动环节来分担径向和轴向载荷。通过选择减速比可方便地匹配主机参数,对马达的承载要求相对较低。
    对于这两种方案来讲,高速方案应用较多,主要是由于低速大扭矩马达的制造工艺要求较高,难于制造;维修保养要求水平高;成本高。

    3.各种液压行走变量系统
    按液压泵和马达的调速方式的不同,可分为:
    (1)变量泵调速系统:通过调节泵的变量机构,来控制马达的转速和转向。可进行恒功率调速,以适应负载的剧烈变化。此回路的调速范围一般可达40%。
    (2)变量马达调速系统,通过改变马达的排量来调速,可恒转矩输出。但此系统不能换向、变速范围小,限制了它的应用。
    (3)变量泵-变量马达调速系统, 采用先调泵,再调马达的调速方式,其中马达有两点和比例两种变量形式。此系统调速范围大,是前面两种调速系统的乘积,且其调速特性,对一般机械负载要求很适用,应用广泛。
    4.功率分流液压行走系统
    功率分流液压行走系统就是把行星差动轮系与液压调速装置组合起来,把发动机输入的功率流分为可无级调速的液压功率流和高效率的机械功率流,然后经汇流行星排把两路汇合起来。此项技术把液压传动的无级调速性和机械传动稳态效率高这两者的优点结合起来,因此不仅具有无级变速性能,又有较高的效率和较宽的高效区。根据小松公司有关资料,液压机械传动与液力机械相比,装载机作业量大可提高30%,燃料经济性大可提高25%。在功率分流传动中,液压系统主要起调速作用,机械系统主要用来传递动力。液压传动一般用在150KW以下的场合,而功率分流液压行走系统通常为40~400KW,如果限定变速范围则有可能达到735KW.这种液压行走系统的总效
    率一般可达到90~95%。

    变量泵-变量马达调速系统的特性分析
    其系统原理。当系统启动或低速时,马达保持大排量,调速由变量泵完成,通过系统压力来改变马达输出转矩,可获得较大的启动转矩;高速时,泵保持大排量不变,调速由变量马达完成,为恒功率调速,能适应负载的波动,充分利用发动机功率。这种调速回路可以适应大部分机械的负载要求,应用广泛。

    在变量泵一变量马达调速系统中,泵的变量方式通常都有手动和自动两种
    控制方式:。
    系统压力210bar、泵和马达全排量时,泵的效率与输入转速的关系曲线。分析可得:当转速小于100rpm时,由于柱塞工作循环时间长,泄漏量大,加之补油泵吸油能力差,泵的容积效率较低。当转速为1000 2000rpm时,由于补油充分且泄漏减小,容积效率随转速增加而平稳上升并终保持某一高值。但当接近额定转速时,容积效率稍有下降。原因是泵内泄漏量的绝对值主要取决于压力,随转速增加得不多,而泵的输出流量在一-定范围内却几乎正比于转速,泄漏量相对于输出流量的比值随转速增加而下降,因此容积效率升高。但是转速过高时,吸油阻力剧增,液压油内所含气体的析出会使实际进入柱塞缸的油量减少,会导致容积效率又趋于下降。
    对于机械效率而言,排量、压力一定时,泵的有效输入转矩并不随转速变化,而构成泵轴阻力矩的油液流动损失、运动副间的摩擦损失和各旋转部件的搅油损失等在泵的工况范围内却都是随转速增加而增加,所以转速越高,泵的机械效率越低。

    转逮对泵效率的影响
    全排量且转速恒定时,随工作压力的增高,由于各密封面间泄漏量的增加,泵的容积效率下降。
    系统压力越高,输入转矩中用于克服泵内零件自身运动阻力的部分所占比重就越小,因此泵的机械效率在相当大程度上随压力的增加而上升,压力为280bar左右时,机械效率达95%以上。但当压力上升到-定限度后,由于某些运动副零件受力后变形过大,运动阻力剧增,机械效率将会稍有所下降。
    据此,由容积效率和机械效率相乘而得的总效率曲线也就必然呈现一种随压力和转速增加先升高后又降低的趋势。
    REXROTH螺纹插装阀电磁阀R930058697 OD150118A000000-VEI-016-NC-08A-A-01-0000
    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
    R409007235    SPOLE F OD 15-31-56 L540953
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    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
    R934001157    OR0255030435S0-VSBN-10A-C-ACC-G34-35
    R930077147    OL200210C000S10-VEI16-VSBN-NAER-38-D36-&
    R934002672    OP EM-VSBN-08A-20NCPTF6
    R934002674    OP0201032910 EM-VSBN-08A-10AB-TF6
    R934002675    OP0201032920 EM-VSBN-08A-20AB-TF6
    R934002677    OP0604032920 EM-VSBN-08A-20B-TF6
    R934002716    OP350204291A00 EM-VEI8ANA-VSBN-08A-10-F6
    R934002717    OP350207291A00 EM-VEI8ANA-VSBN-08A-20-F6
    R930078026    OR -VSBN-08A-C-G14-20-TAR.17&
    R934003496    OR -VSBN-08A-V-C-G38-35
    R934004046    OR0255030320S0-VSBN-10A-C-STEEL-G12-20
    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-溢流阀和减压阀-先导驱动滑阀类型
    R901109731    041208032010000-VSPN-08U-10
    R901109732    041208032020000-VSPN-08U-20
    R901109733    041208032035000-VSPN-08U-35
    R901097726    041208038510000-VSPN-10A-10
    R930080209     V00-VSPN-10A-10-FKM
    R930080210     V10-VSPN-10A-10-25BAR-FKM
    R901097722    041208038520000-VSPN-10A-20
    R901104103    041208038535000-VSPN-10A-35
    R901104104    041208048535000-VSPN-10A-V-35
    R930000334    041210035710000-VSPN-12A-10
    R930000335    041210035720000-VSPN-12A-20
    R930000336    041210035735000-VSPN-12A-35
    R930001025    041211032710000-VSPN-16A-10
    R930001026    041211032720000--VSPN-16A-20
    R930001027    041211032735000-VSPN-16A-35
    R930001024    041211042735000-VSPN-16A-V-35
    R930001028    041211732735000-VSPN-16A-TEN-35
    R930002991    081514030335000 A-VSPN-10A-DI-12-35
    R934001159    OR0407030535S0-VSPN-16A-C-STEEL-G1-35
    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,阀座设计,差速器区
    R930005640    041522035610000-VSDN-08A-10
    R930005641    041522035620000-VSDN-08A-20
    R930005642    041522035635000-VSDN-08A-35
    R930069869    041522035635010-VSDN-08A-35-240B
    R930005643    041523038510000-VSDN-10A-10
    R930005644    041523038535000-VSDN-10A-35
    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-先导式阀芯设计,外部先导控制
    R901109735    041306032020000-VSPX-08U-20
    R930000359    041308035710000-VSPX-12A-10
    R930000360    041308035720000-VSPX-12A-20
    R930000361    041308035735000-VSPX-12A-35
    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-单向阀,止回阀-滑阀类型-VUCN-12A
    R901007308    043120005600000-VUCN-08A-00
    R930078809     V00-VUCN-08A-00-V
    R901162183    043120005603000-VUCN-08A-03
    R901106550    043120005605000-VUCN-08A-05
    R901116571    043120005606000-VUCN-08A-06
    R930000961    043120005609000-VUCN-08A-09
    R901106592    043120005614000-VUCN-08A-14
    R930006992    0431200056A0000-VUCN-08A-A0
    R901109785    043123002000000-VUCN-08U-00
    R901106596    043123008500000-VUCN-10A-00
    R930005884    043123008501000-VUCN-10A-01
    R901106601    043123008505000-VUCN-10A-05
    R930000962    043123008509000-VUCN-10A-09
    R901106602    04312300851500A-VUCN-10A-15-A
    R901106616    043125002700000-VUCN-16A-00
    R901106617    043125002702000-VUCN-16A-02
    R930000481    043125002704000-VUCN-16A-04
    R930004414    0431250027A0000-VUCN-16A-A0
    R901106613    043128005700000-VUCN-12A-00
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    力士乐REXROTH行走机械液压-紧凑型液压系统-油路块安装阀-油路块安装阀-阀座设计中的单向阀-流量控制安装阀
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    力士乐REXROTH行走机械液压-紧凑型液压系统-油路块安装阀-油路块安装阀-阀座设计中的单向阀-流量控制安装阀
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    力士乐REXROTH行走机械液压-紧凑型液压系统-油路块安装阀-油路块安装阀-阀座设计中的单向阀-流量控制安装阀
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    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-单向阀,先导式-可解锁
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    R930078810     V0A-VSON-08A-G-00-V-A
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    R934001445    2Y0105000300S0-VSON-10A-DE-C-ACC-G12-3.&
    R934000620    2Y0105100300S0-VSON-10A-DE-C-ACC-G12-3.&
    R934000619    2Y0106100200S0-VSON-08A-DE-C-ACC-G38-3:1
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    R930072303    BP18125_00-VSON-08A-0433061056
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    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-单向阀,先导式-可解锁
    R930000016      043603008503000-VSOD-10A-03
    R930000015      043603108503000-VSOD-10A-03-OR
    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-平衡组件-标准阀座设计,差速器区
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    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-平衡组件-卸载大气压,阀座设计
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    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-平衡组件-局部卸压阀座设计,差速器区
    R901099670    045404032020000-VBSP-08HH-4:1-20
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    R934001329    2Y0309030335S0-VBSP-DE-10A-C-ACC-G12-3:&
    R901092525    045411034720000-VBSP-16U-4:1-20
    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。


    挖掘机械是用铲斗挖掘高于或低于承机面的物料,并装入运输车辆或卸至堆料场的土方机械。挖掘的物料主要是土壤、煤、泥沙及经过预松后的岩石和矿石。挖掘机械分为单斗挖掘机和多斗挖掘机两类。

    挖掘机,又称挖掘机械,又称挖土机,是用铲斗挖掘高于或低于承机面的物料,并装入运输车辆或卸至堆料场的土方机械。
    挖掘机挖掘的物料主要是土壤、煤、泥沙以及经过预松后的土壤和岩石。从近几年工程机械的发展来看,挖掘机的发展相对较快,挖掘机已经成为工程建设中*主要的工程机械之一。 挖掘机*重要的三个参数:操作重量(质量),发动机功率和铲斗斗容。

    常见的挖掘机结构包括,动力装置,工作装置,回转机构,操纵机构,传动机构,行走机构和辅助设施等。
    传动机构通过液压泵将发动机的动力传递给液压马达、液压缸等执行元件,推动工作装置动作,从而完成各种作业。

    液压挖掘机主要由发动机、液压系统、工作装置、行走装置和电气控制等部分组成。液压系统由液压泵、控制阀、液压缸、液压马达、管路、油箱等组成。电气控制系统包括监控盘、发动机控制系统、泵控制系统、各类传感器、电磁阀等。
    液压挖掘机一般由工作装置、上部车体和下部车体三大部分组成。据其构造和用途可以区分为:履带式、轮胎式、步履式、全液压、半液压、全回转、非全回转、通用型、专用型、铰接式、伸缩臂式等多种类型。
    工作装置是直接完成挖掘任务的装置。它由动臂、斗杆、铲斗等三部分铰接而成。为了适应各种不同施工作业的需要,液压挖掘机可以配装多种工作装置,如挖掘、起重、装载、平整、夹钳、推土、冲击锤,旋挖钻等多种作业机具。
    回转与行走装置是液压挖掘机的机体,转台上部设有动力装置和传动系统。发动机是液压挖掘机的动力源,大多采用柴油要在方便的场地, 也可改用电动机。
    液压传动系统通过液压泵将发动机的动力传递给液压马达、液压缸等执行元件,推动工作装置动作,从而完成各种作业。

    挖掘机械一般由动力装置、传动装置、行走装置和工作装置等组成。单斗挖掘机和斗轮挖掘机还有转台,多斗挖掘机还有物料输送装置。动力装置有柴油机、电动机、柴油发电机组或外电源变流机组。柴油机和电动机大多用于中、小型挖掘机械,用一台原动机集中驱动,两者可互换。柴油发电机组和外电源变流机组用于大、中型挖掘机械,用多台电机分散驱动。行走装置主要用来支承机器、使机器变换工作位置和转移作业场地;另外,链斗式挖掘机和环轮式挖掘机的铲斗,随着行走装置的连续行走而切削土壤。行走装置有履带式、轮胎式、步行式、轨行式、浮游式和拖挂式等几种。作业场地固定、要求接地比压较低时用履带式;作业场地多变时用轮胎式;因施工条件特殊而必须架设专用轨道时,用轨行式;挖掘水下泥土用浮游式;小型单斗挖掘机的行走装置无动力源时,用拖挂式;作业场地固定、机器重量大时,用步行式。步行式行走装置大多用于单斗挖掘机中的大、中型拉铲挖掘机和斗轮挖掘机。
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