HED8OA-20/350K14KW现货供应,力士乐REXROTH压力继电器,武汉百士自动化设备有限公司供应产品,国外渠道直销,原厂原装,现货库存,价格优惠, 液压系统中的压力控制阀 在液压系统中,压力控制阀可以调定系统主回路或分支回路的压力.按照功能分类,常用的压力控制阀有溢流阀,减压阀,顺序阀和压力继电器等.这些压力控制阀结构上相似,但性能有差别,在系统中的作用也不尽相同.搞清它们的区别与联系,对于学习压力控制回路以至液压系统的分析广片常重要的。 一,溢流阀 功能 溢流阀的功能是通过阀口溢流,使被控系统或回路的压力保持稳定,实现稳压,调压或限压的作用. 特点 按照结构,溢流阀有直动式和先导式两种.对于直动式溢流阀,当压力较高,流量较大时,要求调压弹簧有很大的刚度,调节性能较差,而滑阀的泄漏也使高压控制难以实现,故只能用于低压小流量场合.先导式溢流阀的特点是用先导阀控制主阀,在溢流阀主阀溢流时,溢流阀进口压力可维持为由先导阀弹簧所调定的定值.先导式溢流阀的另一特点是具有远程控制口,可很方便地实现系统卸荷或运程调压。 溢流阀的泄漏油或流经先导阀的油液在返回油祚时有内泄和外泄两种方式.内泄时泄漏油流经的弹簧腔或先导阀弹簧座通过阀体内的连接通道与出油口和通,而外泄是泄露油或流经先导阀的油液被直接单独引回油箱。 应用 溢流阀的主要用途:(1)在定量泵的出口并联溢流阀可调节泵的出口压力;(2)在变量泵的出口并联溢流阀可对系统起到过载保护作用;(3)在回油路上搂入直动式溢流阀可使执行元件运动平稳;(4)利用先导式溢流阀的远程控制口可实现系统卸荷或远程调压.总之,在系统中溢流阀可作为溢流阀,安全阀,背压阀使用,可以调节系统的压力或使系统卸荷. 二,减压阀 功能 减压阀的功能在于使流经减压阀的油液压力降低,并使与减压阀出口连接的回路压力保持稳定.即减压阀的出口压力可维持恒定,不受进口压力及通过流量的影响。 特点 按照结构减压阀也有直动式和先导式两种,分别用于不同场合. 碱压限的阀心处在原始位置上时,它的阀口是打开的,阀的进,出口沟通.阀心由出口处的压力控制,出口压力未达到调定压力时阀口全开,阀心不动.当出口压力达到调定压力时,阀心上移,阀口关小,在调定压力下达到平衡.当减压阀的出口处不输出油液时,它的出口压力仍能够基本保持恒定,此时有少量油液经先导阀流回油箱。 减压阀与溢流阀的主要区别为:(1)减压阀能保持出口处的压力基本不变,而溢流阀则保持进口处的压力基本不变;(2)在不工作时,减压阀的进出油口互通,溢流阀的进出油口不通;(3)减压阀要求外泄,其先导阀的弹簧腔需通过泄油口单独外接油箱,而溢流阀允许内泄,其先导阀弹簧腔通过阀体内的连接通道与出油口相通,不必单独外接油箱。 应用 减压阀主要用于降低系统某一支路的油液压力,在同一系统中得到两个或多个不同压力的回路.常用于夹紧支路,润滑支路或电液动换向阀的控制回路.需要注意的是减压阀具有压力损失,当分支油路比主油路的压力低很多,且流量较大时,可考虑采用高,低压泵分别供油. 三,顺序阀 功能 顺序阀的功能在于利用液压系统中的压力变化,控制油路通断来控制多个执行元件的顺序动作 特点 按照结构,顺序阀也有直动式和先导式两种.直动式顺序阀结构简单,动作灵敏但调定压力较低,较高压力时宜采用先导式顺序阀.根据控制压力来源的不同,顺序阀有内控式和外控式之分,请注意两者图形符号的区别.内控式顺序阀在进油路压力达到设定压力之前,阀口一直是关闭的,达到设定压力后阀口打开,使压力油进入油路;外控式顺序阀阀口的开闭与油路进口压力无关,仅取决于控制油路压力的大小。 顺序阀与溢流阀的主要区别为:(1)当顺序阀的出口与负载油路相通时,泄漏油和先导控制油必须外泄,而溢流阀的出口与回油相通,泄漏油和先导控制油可外泄也可内泄;(2)溢流阀的进口压力是限定的,即阀的调定压力,顺序阀的进口压力由负载决定,顺序阀开启后可随负载增加市进一步升高. 应用 顺序阀的主要用途为:(1)控制多个执行元件的顺序动作;(2)内控式顺序阀可作背压阀使用;(3)与单向阀并联组成平衡阀,锁定执行元件;(4)外控顺序阀可用于双泵供油系统的卸荷. 四,压力继电器 压力继电器是利用液体压力信号控制电气触点通断的液压电气转换元件,当油液的压力达到其设定压力时,压力继电器发出电信号,以控制电气元件动作,实现执行元件的顺序动作或系统的安全保护和动作互锁。 HED8OA-20/350K14KW现货供应 R901102716 HED8OA-20/350K14KW R901107332 HED8OA-20/350K14KW/12 R901110450 HED8OA-20/350K14KWV R901102778 HED8OA-20/350K14S R901108009 HED8OA-20/350K14S/12 R901107922 HED8OA-20/350K14SV R901186318 HED8OA-20/350K14SV/12 R901107796 HED8OA-20/350K14V R901110447 HED8OA-20/350K14V/12 R901125561 HED8OA-20/350K35 R987199324 HED8OA-20/350K35 R901127471 HED8OA-20/350K35A R901127477 HED8OA-20/350K35AS R901272251 HED8OA-20/350K35KS R901127474 HED8OA-20/350K35S R901181469 HED8OA-20/350P160K14S R901371576 HED8OA-20/350P170K14S R901371577 HED8OA-20/350P200K14S R901245027 HED8OA-20/350P250K14S R901217016 HED8OA-20/350P270K14S R901376877 HED8OA-20/350P300K14 R901171883 HED8OA-20/350U110K14S R901168129 HED8OA-20/350U210K14S R901101698 HED8OA-20/50K14 R901107793 HED8OA-20/50K14/12 R901106507 HED8OA-20/50K14A R901110444 HED8OA-20/50K14A/12 R901106499 HED8OA-20/50K14AS R901110443 HED8OA-20/50K14AS/12 R901110166 HED8OA-20/50K14ASV R901110164 HED8OA-20/50K14AV R901110163 HED8OA-20/50K14AV/12 R901102702 HED8OA-20/50K14KS R901110160 HED8OA-20/50K14KSV R901102754 HED8OA-20/50K14KW R976722498 HED8OA-20/50K14KW-10BARSTEIGEND R901108514 HED8OA-20/50K14KW/12 R901110155 HED8OA-20/50K14KWV R901102704 HED8OA-20/50K14S R987255554 HED8OA-20/50K14S R901155751 HED8OA-20/50K14S/12 R901110149 HED8OA-20/50K14SV R901110147 HED8OA-20/50K14SV/12 R901117070 HED8OA-20/50K14V R901109543 HED8OA-20/50K14V/12 R901173249 HED8OA-20/50K35 R901349292 HED8OA-20/50K35AS R901336212 HED8OA-20/50K35KS R901155571 HED8OA-20/50K35S R901312177 HED8OA-20/50P010K14AS R901213487 HED8OA-20/50P015K14S R901244472 HED8OA-20/50R020K14S R901355720 HED8OA-20/50U020K14S R901107127 HED8OA-20/630K14 R901134765 HED8OA-20/630K14/12 R901275335 HED8OA-20/630K14A R901108512 HED8OA-20/630K14AS R901199523 HED8OA-20/630K14ASV R901109541 HED8OA-20/630K14KS R901109538 HED8OA-20/630K14KW R901119175 HED8OA-20/630K14KW/12 R901107915 HED8OA-20/630K14S R901130967 HED8OA-20/630K14SV R901118228 HED8OA-20/630K14V R901188553 HED8OA-20/630K35A R901426835 HED8OA-20/630K35S R901364935 HED8OA-20=100K14S R901364011 HED8OA-20=200K14S R901448964 HED8OA-20=200K14SV R901364934 HED8OA-20=350K14S R901222334 HED8OA-20=50K14AS R987140396 HED8OA20/350K14+PISTOKE R987140316 HED8OA20/50K14+PISTOKE R987129279 HED8OH20/100Z14STS10AQ R987128506 HED8OH20/200K14STARATOSEC.TS10AQ R901102360 HED8OH-20/100K14 R901107128 HED8OH-20/100K14A R901106505 HED8OH-20/100K14AS R901109535 HED8OH-20/100K14ASV R901099780 HED8OH-20/100K14AV R901106498 HED8OH-20/100K14KS R901099788 HED8OH-20/100K14KSV R901107122 HED8OH-20/100K14KW R901109532 HED8OH-20/100K14KWV R901095375 HED8OH-20/100K14S R901108268 HED8OH-20/100K14SV R901099775 HED8OH-20/100K14V R901125068 HED8OH-20/100K35KS R901315927 HED8OH-20/100K35S R901421283 HED8OH-20/100U060K14S R901108239 HED8OH-20/100U070K14S R901099808 HED8OH-20/200K14 R901099809 HED8OH-20/200K14A R901107119 HED8OH-20/200K14AS R901109530 HED8OH-20/200K14ASV R901099790 HED8OH-20/200K14AV R901099811 HED8OH-20/200K14KS R901099792 HED8OH-20/200K14KSV R901107369 HED8OH-20/200K14KW R901125810 HED8OH-20/200K14KWV R901102362 HED8OH-20/200K14S R901109074 HED8OH-20/200K14SV R901099789 HED8OH-20/200K14V R901148816 HED8OH-20/200K35KS R901171767 HED8OH-20/200K35S R901270140 HED8OH-20/200P110K14S R901139168 HED8OH-20/200P145K14S R901139169 HED8OH-20/200P185K14S R901099813 HED8OH-20/200U150K14V R901099814 HED8OH-20/200U180K14V R901099793 HED8OH-20/200U185K14V R901101640 HED8OH-20/350K14 R901107313 HED8OH-20/350K14A R901108236 HED8OH-20/350K14AS R901109071 HED8OH-20/350K14ASV R901099816 HED8OH-20/350K14AV R901106454 HED8OH-20/350K14KS R901099817 HED8OH-20/350K14KSV R901107095 HED8OH-20/350K14KW R901109069 HED8OH-20/350K14KWV R901102713 HED8OH-20/350K14S R901109065 HED8OH-20/350K14SV R901099815 HED8OH-20/350K14V R901388617 HED8OH-20/350K35 R901417246 HED8OH-20/350K35AS R901265207 HED8OH-20/350K35S R901128257 HED8OH-20/50F004K14SV R901219262 HED8OH-20/50F010K14V R901102349 HED8OH-20/50K14 R901108007 HED8OH-20/50K14A R901107086 HED8OH-20/50K14AS R901109050 HED8OH-20/50K14ASV R901099798 HED8OH-20/50K14AV R901102356 HED8OH-20/50K14KS R901099800 HED8OH-20/50K14KSV R901107394 HED8OH-20/50K14KW R901109049 HED8OH-20/50K14KWV R901102712 HED8OH-20/50K14S R901215098 HED8OH-20/50K14SV R901099796 HED8OH-20/50K14V R901156058 HED8OH-20/50K35KS R901231720 HED8OH-20/50K35S R901101658 HED8OH-20/630K14 R901109035 HED8OH-20/630K14AS R901109039 HED8OH-20/630K14ASV R901136386 HED8OH-20/630K14KS R901307873 HED8OH-20/630K14KSV R901336213 HED8OH-20/630K14KW R901109029 HED8OH-20/630K14S R901101649 HED8OH-20/630K14V R901369355 HED8OH-20=200K14 R901342162 HED8OH-20=50K14 R901232375 HED8OH-20=50K14S R987140394 HED8OH20/350K14+PISTOKE R901102747 HED8OP-20/100K14 R901108229 HED8OP-20/100K14A R901107790 HED8OP-20/100K14AS R901162988 HED8OP-20/100K14ASV R901321355 HED8OP-20/100K14AV R901107997 HED8OP-20/100K14KS R901107370 HED8OP-20/100K14KW R901106509 HED8OP-20/100K14S R901109028 HED8OP-20/100K14SV R901108265 HED8OP-20/100K14V R901437159 HED8OP-20/100K35 R901206318 HED8OP-20/100K35KW R901127492 HED8OP-20/100K35S R901354506 HED8OP-20/100P020K14S R901354507 HED8OP-20/100P030K14S R901109027 HED8OP-20/100P070K14S R901102721 HED8OP-20/200K14 R901108023 HED8OP-20/200K14A R901108003 HED8OP-20/200K14AS R901109024 HED8OP-20/200K14ASV R901137607 HED8OP-20/200K14AV R901108258 HED8OP-20/200K14KS R901108018 HED8OP-20/200K14KW R901109010 HED8OP-20/200K14KWV R901107093 HED8OP-20/200K14S R901109004 HED8OP-20/200K14SV R901107397 HED8OP-20/200K14V R901336909 HED8OP-20/200K35S R901233431 HED8OP-20/200P110K14S R901108992 HED8OP-20/200P160K14S R901106453 HED8OP-20/350K14 R901107326 HED8OP-20/350K14A R901091138 HED8OP-20/350K14AS R901108531 HED8OP-20/350K14ASV R901126082 HED8OP-20/350K14AV R901107914 HED8OP-20/350K14KS R901107129 HED8OP-20/350K14KW R901122124 HED8OP-20/350K14KWV R901102365 HED8OP-20/350K14S R901107913 HED8OP-20/350K14SV R901107330 HED8OP-20/350K14V R901127494 HED8OP-20/350K35S R901434285 HED8OP-20/350P120K14KS R901108252 HED8OP-20/350P140K14S R901456336 HED8OP-20/350P280K14S R901107083 HED8OP-20/50K14 R901107999 HED8OP-20/50K14A R901107396 HED8OP-20/50K14AS R901123736 HED8OP-20/50K14AV R901108012 HED8OP-20/50K14KS R901108249 HED8OP-20/50K14KW R901106504 HED8OP-20/50K14S R901140517 HED8OP-20/50K14SV R901108001 HED8OP-20/50K14V R901131275 HED8OP-20/50K35 R901336910 HED8OP-20/50K35S R901159161 HED8OP-20/50K35V R901245432 HED8OP-20/50U025K14AV R901108147 HED8OP-20/630K14 R901210429 HED8OP-20/630K14A R901280745 HED8OP-20/630K14AS R901171255 HED8OP-20/630K14ASV R901124650 HED8OP-20/630K14KS R901315271 HED8OP-20/630K14KW R901106449 HED8OP-20/630K14S R901108529 HED8OP-20/630K14V R901437158 HED8OP-20/630K35 R901251521 HED8OP-20=50K14AS R987437823 HED8OH-20/100K14SSETTO80BARFALLING R987411811 HED8OP20/350K14SSETTO280BAR R971012678 HED8OA-20/350K14S(12.3MPA) R971012679 HED8OA-20/350K14S(17.2MPA) R971012681 HED8OA-20/350K14S(21.6MPA) 力士乐REXROTH信号编码器 力士乐REXROTH电子信号编码器 R900032835 VT10468-3X/B0-R0 R900020321 VT10468-3X/B0-RX R900029055 VT10468-3X/B1-RX R900051872 VT10468-3X/B2-RX R900248704 VT10468-3X/B3-RX R900078012 VT10468-3X/B4-RX R901174376 VT10468-3X/B6-RX R900207443 VT10468-3X/B7-RX R900020307 VT10468-3X/F0-R0 R900020360 VT10468-3X/F0-RX R900074164 VT10468-3X/F1-R0 R900020309 VT10468-3X/F1-RX R900053072 VT10468-3X/F2-R0 R900020911 VT10468-3X/F2-RX R900020325 VT10468-3X/F3-R0 R900020593 VT10468-3X/F3-RX R900070971 VT10468-3X/F4-RX R900020306 VT10468-3X/F5-RX R900020365 VT10468-3X/F6-R0 R900020328 VT10468-3X/F6-RX R900020914 VT10468-3X/F7-RX R901237812 VT10468-3X/F7-RX/24VDC R900207352 VT10406-3X/BX0-2S-RXY R900705603 VT10406-3X/BXY-0S-RXY R900075938 VT10406-3X/BXY-1S-RXY R901214882 VT10406-3X/BXY-4S-R00 R900079605 VT10406-3X/FXY-0K-RXY R900031910 VT10406-3X/FXY-0S-R00 R900020746 VT10406-3X/FXY-0S-RXY R900082731 VT10406-3X/FXY-1K-RXY R900066640 VT10406-3X/FXY-1S-R00 R900020311 VT10406-3X/FXY-1S-RXY R900724109 VT10406-3X/FXY-1S-RXY/24VDC R900052968 VT10406-3X/FXY-2K-RXY R900031616 VT10406-3X/FXY-2S-R00 R900020355 VT10406-3X/FXY-2S-RXY R901038961 VT10406-3X/FXY-3K-RXY R900033192 VT10406-3X/FXY-3S-R00 R901010925 VT10406-3X/FXY-4K-RXY R900020777 VT10406-3X/FXY-6K-RXY R900769266 VT10406-3X/FXY-6S-RXY R900063777 VT10406-3X/FXY-7S-RXY R901090359 VT10399-5X/FXY-B90T-R00 R900750734 VT10399-5X/FXY-B9RT-RXY R901206765 VT10399-5X/FXY-D90A-R00 R900069817 VT10399-5X/FXY-D9RA-RXY R900029275 VT10399-5X/FXY-D9RT-RXY 力士乐REXROTH电气配件 力士乐REXROTH放大器接线座和卡座 力士乐REXROTH连接适配器 R900062692 VT10812-2X/32D R900062584 VT10812-2X/48F R900713826 VT10812-2X/64G 力士乐REXROTH全闭式板卡插箱 R900784153 VT12302-3X/1 R978009974 VT12302-3X/2-64G DUAL CARD HOLD 力士乐REXROTH 19英寸机架 R900016481 VT19101-1X/1EINFACHMAGAZIN160MM R900016483 VT19101-1X/2EINFACHMAGAZIN220MM R901222062 VT19101-1X/3EINFACHMAGAZIN220MM R900016482 VT19102-1X/1DOPPELMAGAZIN160MM R900016484 VT19102-1X/2DOPPELMAGAZIN220MM R901178509 VT19103-1X/1DREIFACHMAGAZIN160MM 力士乐REXROTH安装卡架 R910908569 VT3002-2X/32RD29928 1834486002 VT3002-2-2X/32D R900776300 VT3002-2X/32=CSA(KARTENHALTER) R900209648 VT3002-1-2X/15H R900020153 VT3002-1-2X/32D R900020153 VT3002-1-20/32D 1834486001 VT3002-1-2X/32F R900020154 VT3002-1-2X/48F R900020154 VT3002-1-20/48F R900991843 VT3002-1-2X/64G 力士乐REXROTH电源和稳定设备 力士乐REXROTH电源模块 R900010937 VT11006-1X/ 力士乐REXROTH电容器模块 R900020293 VT11110-1X/ 力士乐REXROTH电源模块 R900554828 VT11116-1X/ (MOD.VT11006-1X/+-10V) 力士乐REXROTH集成式供电单元 R900020164 VT-NE30-1X/ R987174925 VT-NE30-1X/ R901082348 VT-NE30-2X/ R900020165 VT-NE31-1X/ R900080049 VT-NE32-1X/ 力士乐REXROTH调试设备 力士乐REXROTH带测试装置的维修箱 R900967021 VT-SVTSY-1-1X/1-0-0-1-0/(PRUEFG.+KOFFER) R900965027 VT-SVTSY-1-1X/1-0-0-1-1/(PRUEFG.+KOFFER) R901119774 VT-SVTSY-1-1X/1-0-1-0-1/(PRUEFG.+KOFFER) R900720411 VT-SVTSY-1-1X/1-1-0-0-0/(PRUEFG.+KOFFER) R901041006 VT-SVTSY-1-1X/1-1-0-0-1/(PRUEFG.+KOFFER) R900969193 VT-SVTSY-1-1X/1-1-1-0-0/(PRUEFG.+KOFFER) R901218892 VT-SVTSY-1-1X/1-1-1-0-1/(PRUEFG.+KOFFER) R900724784 VT-SVTSY-1-1X/1-1-1-1-0/(PRUEFG.+KOFFER) R900962017 VT-SVTSY-1-1X/1-1-1-1-1/(PRUEFG.+KOFFER) 力士乐REXROTH带测试单元的维修箱 R900945527 VT-VETSY-1-1X/1-1-0-0-0/(PRUEFG.+KOFFER) R900775241 VT-VETSY-1-1X/1-1-0-0-1/(PRUEFG.+KOFFER) R900943515 VT-VETSY-1-1X/1-1-0-1-0/(PRUEFG.+KOFFER) R900944079 VT-VETSY-1-1X/1-1-0-1-1/(PRUEFG.+KOFFER) R978911933 VT-VETSY-1-1X/1-1-0-A-0 R900962782 VT-VETSY-1-1X/1-1-1-0-0/(PRUEFG.+KOFFER) R900763220 VT-VETSY-1-1X/1-1-1-0-1/(PRUEFG.+KOFFER) R900951688 VT-VETSY-1-1X/1-1-1-1-0/(PRUEFG.+KOFFER) R900951686 VT-VETSY-1-1X/1-1-1-1-1/(PRUEFG.+KOFFER) R978913860 VT-VETSY-1-1X/1-1-1-A-0 R901253174 VT-VETSY-1-1X/1-2-0-0-0/(PRUEFG.+KOFFER) R900751296 VT-VETSY-1-1X/1-2-0-1-0/(PRUEFG.+KOFFER) R901031171 VT-VETSY-1-1X/1-2-0-1-1/(PRUEFG.+KOFFER) R901049737 VT-VETSY-1-1X/1-2-1-1-0/(PRUEFG.+KOFFER) R978050422 VT-VETSY-1-1X/1-2-1-1-0/USA R900951687 VT-VETSY-1-1X/1-2-1-1-1/(PRUEFG.+KOFFER) R978911206 VT-VETSY-1-1X/1-2-1-A-0 力士乐REXROTH监测模块 力士乐REXROTH用于监测和限制比例阀电流的模块 R901042058 VT-MUXA2-1-1X/V0/1A R901254583 VT-MUXA2-2-1X/V0/1A 力士乐REXROTH插头和配电缆连接 力士乐REXROTH连接K4阀插头 力士乐REXROTH标准不带灯插头 R987293407 PLUG-IN CONNECTOR 03POLZ4(A)GRAU R987293408 PLUG-IN CONNECTOR 03POLZ4(B)SCHW R987293409 PLUG-IN CONNECTOR 03POLZ4(B)SCHWARZ R900338518 PLUG-IN CONNECTOR 3P Z4 A GDM2009-RE & R900008908 PLUG-IN CONNECTOR 3P Z4 A GDM2011 BG R900074683 PLUG-IN CONNECTOR 3P Z4 A GRAU SPEZ R900338519 PLUG-IN CONNECTOR 3P Z4 B GDM2009-RE & R900008909 PLUG-IN CONNECTOR 3P Z4 B GDM2011-RE & R900840801 PLUG-IN CONNECTOR 3P Z4 B SILIKON BG R900074684 PLUG-IN CONNECTOR 3P Z4 B SW SPEZ R900020563 PLUG-IN CONNECTOR 3P Z4 GDML2011GE1-GR R900020562 PLUG-IN CONNECTOR 3P Z4 GDML2011GE1G-SW R901035402 PLUG-IN CONNECTOR 3P Z4 M GR BG R901017010 PLUG-IN CONNECTOR 3P Z4 M GR SPEZ R901035403 PLUG-IN CONNECTOR 3P Z4 M SW BG R901017011 PLUG-IN CONNECTOR 3P Z4 M SW SPEZ R901404414 PLUG-IN CONNECTOR 3P Z4 M20 SW R900017759 PLUG-IN CONNECTOR 3P Z4-SW LPG-V SPEZ R900012672 PLUG-IN CONNECTOR 3P Z42 GDMC2011-RE-GR R900765033 PLUG-IN CONNECTOR 3P Z4L-SW 24-240V AC& 力士乐REXROTH标准不带灯,带电缆插头 R913008518 PLUG-IN CONNECTOR 3P Z4 M SW SPEZ +5M R900217134 PLUG-IN CONNECTOR 3P Z4 SW +10MSPEZ R901269455 PLUG-IN CONNECTOR 3P Z4 SW +10M XN1 R900032013 PLUG-IN CONNECTOR 3P Z4-GR +5M SPEZ R900032019 PLUG-IN CONNECTOR 3P Z4-GR +3M SPEZ& R900032020 PLUG-IN CONNECTOR 3P Z4-SW +3M SPEZ R900032014 PLUG-IN CONNECTOR 3P Z4-SW +5M SPEZ 力士乐REXROTH标准不带灯,带电缆插头(ATEX) R901200582 CABLE SET DS2513 +12M ATEX R901200418 CABLE SET DS2513 +3M ATEX R901200460 CABLE SET DS2513 +5M ATEX 力士乐REXROTH标准不带灯插头 R900004823 PLUG-IN CONNECTOR 3P Z45 A GDM201 BG& R900840795 PLUG-IN CONNECTOR 3P Z45 A SILKON BG R900011039 PLUG-IN CONNECTOR 3P Z45 B GDM201 BG& 力士乐REXROTH带灯插头 R900057292 PLUG-IN CONNECTOR 3P Z5L 12-240V SPEZ R900313925 PLUG-IN CONNECTOR 3P Z5L A 90-130V BG R900313922 PLUG-IN CONNECTOR 3P Z5L A LED12V BG R900313923 PLUG-IN CONNECTOR 3P Z5L A LED24V BG R900313924 PLUG-IN CONNECTOR 3P Z5L A LED42-60V BG R900313931 PLUG-IN CONNECTOR 3P Z5L B 180-240V BG R900313927 PLUG-IN CONNECTOR 3P Z5L B LED12V BG R900313928 PLUG-IN CONNECTOR 3P Z5L B LED24V BG R900313929 PLUG-IN CONNECTOR 3P Z5L B LED42-60V BG R901017022 PLUG-IN CONNECTOR 3P Z5L M 12-240V SP& 力士乐REXROTH带灯插头 R900057453 PLUG-IN CONNECTOR 3P Z55L 12-240V SPEZ R900843812 PLUG-IN CONNECTOR 3P Z55L A 90-130V BG R900843810 PLUG-IN CONNECTOR 3P Z55L A LED24V BG R900843813 PLUG-IN CONNECTOR 3P Z55L B 90-130V BG R900843811 PLUG-IN CONNECTOR 3P Z55L B LED24V BG R900861302 PLUG-IN CONNECTOR 3P Z55L1 24V SPEZ BG& R900861962 PLUG-IN CONNECTOR 3P Z55L2 24VDC SPEZ 力士乐REXROTH带灯,带电缆插头 R900217136 PLUG-IN CONNECTOR 3P Z4L +10MSPEZ R900217137 PLUG-IN CONNECTOR 3P Z4L SW +10MSPEZ R900217135 PLUG-IN CONNECTOR 3P Z4L SW +10MSPEZ R900032049 PLUG-IN CONNECTOR 3P Z4L-GR +3M SPEZ R900032025 PLUG-IN CONNECTOR 3P Z4L-GR +3M SPEZ& R900032017 PLUG-IN CONNECTOR 3P Z4L-GR +5M SPEZ& R900032050 PLUG-IN CONNECTOR 3P Z4L-S +3M SPEZ R900032023 PLUG-IN CONNECTOR 3P Z4L-SW +3M SPEZ R900032024 PLUG-IN CONNECTOR 3P Z4L-SW +3M SPEZ R900032010 PLUG-IN CONNECTOR 3P Z4L-SW +5M SPEZ R900032012 PLUG-IN CONNECTOR 3P Z4L-SW +5M SPEZ R900032018 PLUG-IN CONNECTOR 3P Z4L-SW +5M SPEZ 力士乐REXROTH带灯插头,齐纳二极管电路 R996953832 PLUG-INCONNECTOR3P2XZ5L1-24VDC+KABEL R900310995 PLUG-INCONNECTOR3PZ5L124VSPEZBG& R900310994 PLUG-INCONNECTOR3PZ5L1ALED24VBG R901017026 PLUG-INCONNECTOR3PZ5L1M24VSPEZ 力士乐REXROTH带灯,带电缆插头,齐纳二极管电路 R900217138 PLUG-INCONNECTOR3PZ4L1SW+10MSPEZ R900032026 PLUG-INCONNECTOR3PZ4L1-G+3MSPEZ& R900032021 PLUG-INCONNECTOR3PZ4L1-S+3MSPEZ& R900032015 PLUG-INCONNECTOR3PZ4L1-S+5MSPEZ 力士乐REXROTH带灯插头,保护二极管 R987293410 PLUG-INCONNECTOR03POLZ5L224VDCSPEZ. R901017027 PLUG-INCONNECTOR3PZ5L2M24VDCSPEZ R900310997 PLUG-INCONNECTOR3PZ5L224VDCSPEZBG R900310996 PLUG-INCONNECTOR3PZ5L2ALED24VBG 力士乐REXROTH带整流器插头 R900313933 PLUG-IN CONNECTOR 3P RZ5 24-2 SPEZ BG& R901017025 PLUG-IN CONNECTOR 3P RZ5 M24 240V SPEZ 力士乐REXROTH带整流器插头 R900842566 PLUG-IN CONNECTOR 3P RZ55 24 SPEZ BG 力士乐REXROTH带灯带整流器插头 R976721045 PLUG-IN CONNECTOR 03POL RZ5L M 110V R900057423 PLUG-IN CONNECTOR 3P RZ5L 24-24 SPEZ& R901017029 PLUG-IN CONNECTOR 3P RZ5LM 24-240V SPEZ R987318774 PLUG-IN CONNECTOR 3P RZ5LM 70-240V 5M 力士乐REXROTH带灯带整流器插头 R900057455 PLUG-IN CONNECTOR 3P RZ55L 24-2 SPEZ R900848921 PLUG-IN CONNECTOR 3P RZ55L A 90-130V BG R900848922 PLUG-IN CONNECTOR 3P RZ55L B 90-130V BG 力士乐REXROTH电缆连接双插头 R901207820 CABLE SET 3P Z60 113 24V R901207825 CABLE SET 3P Z60 135 24V 力士乐REXROTH电缆连接双带灯插头 R901207819 CABLE SET 3P Z60L 113 24V R901207824 CABLE SET 3P Z60L 135 24V 力士乐REXROTH电缆连接双带灯插头,齐纳二极管电路 R901205511 CABLE SET 3P Z60L8 113 24V R901207823 CABLE SET 3P Z60L8 135 24V 力士乐REXROTH电缆连接双插头 R901207821 CABLE SET 4P Z61 113 230V +3M R901207822 CABLE SET 4P Z61 113 230V +5M 在液压系统中主要体现在电动机、液压泵、液压马达的转轴在高速运转时,会产生一种频率与转速相对应的受迫振动。这种振动会通过泵站基础或管路传递到其他管道、油箱和阀件,电动机、液压泵、液压马达在使用过程中,因磨损等原因使得配合间隙增大、轴承位置窜动等。因此将会产生高频振动,电机与泵的联轴器也会因两半轴的不同轴、偏斜过大产生与转速同频率的振动。 这些振动较常见的表现是液压系统的噪声加大,加快运动机件的疲劳破坏。当振幅**过一 定限度时,就会导致机械构件产生过大的应力而失效。 液压冲击现象 在液压系统中,当液体流动方向突然改变或停止时,液体流动速度发生急剧变化。由于流动液体的惯性和运动部件的惯性,使系统中的压力在某一-瞬间 突然急剧上升,形成一个压力峰值,这种现象称为液压冲击。液压冲击形成的瞬时压力峰值称为冲击压力其值是正常工作压力的3~4倍。它不仅会引起系统产生巨大的振动和噪声,恶化工作条件,导致密封装置、管路和液压元件损坏,还会引起某些液压元件产生误动作,破坏系统的工作循环,降低设备的工作质量或造成设备的损坏。因此,研究液压冲击产生的原因及危害,采取减小和预防液压冲击的措施,对提高液压系统的工作稳定性和工作性能有着重要的意义。 液压冲击会使系统瞬时压力比正常工作压力高得很多,甚至**过正常工作压力的2-3倍以上。突然关闭油缸的出油口时,用示波器实测得到的油缸出油口的压力曲线。在液压缸正常工作时,油液压力约为4.5Mpa,突然关闭其出油口后,压力瞬时增加到近12. OMpa,增大到原油压的三倍。 液压冲击的危害是很严重的,会产生巨大的振动和噪声,且使油温升高,还会使密封装置、管件、连接件及其他元辅件损坏。例如,有一-直径为25mm,壁厚为1.5mm的油管,当系统工作压力只有7-10Mpa时,便发现有破坏现象,而这种油管的实际静止破坏压力约高达50- -60Mpa,从而可见,除压力脉动使油管产生疲劳之外,主要原因是液压冲击所致的破坏结果。所以,搞清液压冲击的产生原因,估算出它的压力值,并采取抑制和防治措施是非常重要的。 液压冲击的危害主要有四个方面: 1、系统中的部分元件如管道、仪表等因受到过高的液压冲击力而遭到破坏,一般来说液压冲击力可以达到普通工作压力的3到4倍。 2、系统的可靠性和稳定性会收到液压冲击的影响,如压力继电器会因液压冲击而发出错误信号,干扰液压系统的正常工作。 3、系统受到液压冲击时,发出较大的噪声和振动,并可能令连接件松动、压力阀调节压力改变并出现泄漏。 4、在液压冲击过程中,导管中形成的高频率的重复载荷,容易使导管疲劳破坏。