力士樂旋鈕調節壓力繼電器HED8OH-2X/200K14KW R901107369，德國REXROTH旋鈕調節壓力繼電器，購買進口液壓、氣動、自動化控制工業配件，
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液壓系統中的壓力控制閥
在液壓系統中,壓力控制閥可以調定系統主回路或分支回路的壓力.按照功能分類,常用的壓力控制閥有溢流閥,減壓閥,順序閥和壓力繼電器等.這些壓力控制閥結構上相似,但性能有差別,在系統中的作用也不盡相同.搞清它們的區別與聯系,對于學習壓力控制回路以至液壓系統的分析廣片常重要的。
一,溢流閥
功能 溢流閥的功能是通過閥口溢流,使被控系統或回路的壓力保持穩定,實現穩壓,調壓或限壓的作用.
特點 按照結構,溢流閥有直動式和先導式兩種.對于直動式溢流閥,當壓力較高,流量較大時,要求調壓彈簧有很大的剛度,調節性能較差,而滑閥的泄漏也使高壓控制難以實現,故只能用于低壓小流量場合.先導式溢流閥的特點是用先導閥控制主閥,在溢流閥主閥溢流時,溢流閥進口壓力可維持為由先導閥彈簧所調定的定值.先導式溢流閥的另一特點是具有遠程控制口,可很方便地實現系統卸荷或運程調壓。
溢流閥的泄漏油或流經先導閥的油液在返回油祚時有內泄和外泄兩種方式.內泄時泄漏油流經的彈簧腔或先導閥彈簧座通過閥體內的連接通道與出油口和通,而外泄是泄露油或流經先導閥的油液被直接單獨引回油箱。
應用 溢流閥的主要用途:(1)在定量泵的出口并聯溢流閥可調節泵的出口壓力;(2)在變量泵的出口并聯溢流閥可對系統起到過載保護作用;(3)在回油路上摟入直動式溢流閥可使執行元件運動平穩;(4)利用先導式溢流閥的遠程控制口可實現系統卸荷或遠程調壓.總之,在系統中溢流閥可作為溢流閥,安全閥,背壓閥使用,可以調節系統的壓力或使系統卸荷.
二,減壓閥
功能 減壓閥的功能在于使流經減壓閥的油液壓力降低,并使與減壓閥出口連接的回路壓力保持穩定.即減壓閥的出口壓力可維持恒定,不受進口壓力及通過流量的影響。
特點 按照結構減壓閥也有直動式和先導式兩種,分別用于不同場合.
堿壓限的閥心處在原始位置上時,它的閥口是打開的,閥的進,出口溝通.閥心由出口處的壓力控制,出口壓力未達到調定壓力時閥口全開,閥心不動.當出口壓力達到調定壓力時,閥心上移,閥口關小,在調定壓力下達到平衡.當減壓閥的出口處不輸出油液時,它的出口壓力仍能夠基本保持恒定,此時有少量油液經先導閥流回油箱。
減壓閥與溢流閥的主要區別為:(1)減壓閥能保持出口處的壓力基本不變,而溢流閥則保持進口處的壓力基本不變;(2)在不工作時,減壓閥的進出油口互通,溢流閥的進出油口不通;(3)減壓閥要求外泄,其先導閥的彈簧腔需通過泄油口單獨外接油箱,而溢流閥允許內泄,其先導閥彈簧腔通過閥體內的連接通道與出油口相通,不必單獨外接油箱。
應用 減壓閥主要用于降低系統某一支路的油液壓力,在同一系統中得到兩個或多個不同壓力的回路.常用于夾緊支路,潤滑支路或電液動換向閥的控制回路.需要注意的是減壓閥具有壓力損失,當分支油路比主油路的壓力低很多,且流量較大時,可考慮采用高,低壓泵分別供油.
三,順序閥
功能 順序閥的功能在于利用液壓系統中的壓力變化,控制油路通斷來控制多個執行元件的順序動作
特點 按照結構,順序閥也有直動式和先導式兩種.直動式順序閥結構簡單,動作靈敏但調定壓力較低,較高壓力時宜采用先導式順序閥.根據控制壓力來源的不同,順序閥有內控式和外控式之分,請注意兩者圖形符號的區別.內控式順序閥在進油路壓力達到設定壓力之前,閥口一直是關閉的,達到設定壓力后閥口打開,使壓力油進入油路;外控式順序閥閥口的開閉與油路進口壓力無關,僅取決于控制油路壓力的大小。
順序閥與溢流閥的主要區別為:(1)當順序閥的出口與負載油路相通時,泄漏油和先導控制油必須外泄,而溢流閥的出口與回油相通,泄漏油和先導控制油可外泄也可內泄;(2)溢流閥的進口壓力是限定的,即閥的調定壓力,順序閥的進口壓力由負載決定,順序閥開啟后可隨負載增加市進一步升高.
應用 順序閥的主要用途為:(1)控制多個執行元件的順序動作;(2)內控式順序閥可作背壓閥使用;(3)與單向閥并聯組成平衡閥,鎖定執行元件;(4)外控順序閥可用于雙泵供油系統的卸荷.
四,壓力繼電器
壓力繼電器是利用液體壓力信號控制電氣觸點通斷的液壓電氣轉換元件,當油液的壓力達到其設定壓力時,壓力繼電器發出電信號,以控制電氣元件動作,實現執行元件的順序動作或系統的安全保護和動作互鎖。
力士樂旋鈕調節壓力繼電器HED8OH-2X/200K14KW R901107369
力士樂REXROTH壓力繼電器訂貨號物料號和型號：
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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)
力士樂REXROTH信號編碼器
力士樂REXROTH電子信號編碼器
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
力士樂REXROTH電氣配件
力士樂REXROTH放大器接線座和卡座
力士樂REXROTH連接適配器
R900062692 VT10812-2X/32D
R900062584 VT10812-2X/48F
R900713826 VT10812-2X/64G
力士樂REXROTH全閉式板卡插箱
R900784153 VT12302-3X/1
R978009974 VT12302-3X/2-64G DUAL CARD HOLD
力士樂REXROTH 19英寸機架
R900016481 VT19101-1X/1EINFACHMAGAZIN160MM
R900016483 VT19101-1X/2EINFACHMAGAZIN220MM
R901222062 VT19101-1X/3EINFACHMAGAZIN220MM
R900016482 VT19102-1X/1DOPPELMAGAZIN160MM
R900016484 VT19102-1X/2DOPPELMAGAZIN220MM
R901178509 VT19103-1X/1DREIFACHMAGAZIN160MM
力士樂REXROTH安裝卡架
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
力士樂REXROTH電源和穩定設備
力士樂REXROTH電源模塊
R900010937 VT11006-1X/
R900010937 VT11006-12
力士樂REXROTH電容器模塊
R900020293 VT11110-1X/
力士樂REXROTH電源模塊
R900554828 VT11116-1X/ (MOD.VT11006-1X/+-10V)
力士樂REXROTH集成式供電單元
R900020164 VT-NE30-1X/
R987174925 VT-NE30-1X/
R901082348 VT-NE30-2X/
R900020165 VT-NE31-1X/
R900080049 VT-NE32-1X/
力士樂REXROTH調試設備
力士樂REXROTH帶測試裝置的維修箱
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)
力士樂REXROTH帶測試單元的維修箱
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
力士樂REXROTH監測模塊
力士樂REXROTH用于監測和限制比例閥電流的模塊
R901042058 VT-MUXA2-1-1X/V0/1A
R901254583 VT-MUXA2-2-1X/V0/1A
力士樂REXROTH插頭和配電纜連接
力士樂REXROTH連接K4閥插頭
力士樂REXROTH標準不帶燈插頭
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 &
液壓傳動
與機械傳動相比。液壓傳動更容易實現其運動參數(流量)和動力參數(壓力)的控制，而液壓傳動較之液力傳動具有良好的低速負荷特性。由于具有傳遞效率高，可進行恒功率輸出控制，功率利用充分，系統結構簡單，輸出轉速無級調速，可正、反向運轉，速度剛性大，動作實現容易等突出優點，液壓傳動在工程機械中得到了廣泛的應用。幾乎所有工程機械裝備都能見到液壓技術的蹤跡，其中不少已成為主要的傳動和控制方式。極限負荷調節閉式回路，發動機轉速控制的恒壓，恒功率組合調節的變量系統開發，給液壓傳動應用于工程機械行走系提供了廣闊的發展前景。
一、液壓傳動技術的應用
液壓傳動技術在近代工業制造中的應用
液壓傳動有許多突出的優點，因此它的應用非常廣泛，如一般工業用的塑料加工機械、壓力機械、機床等，行走機械中的工程機械、建筑機械、農業機械、汽車等;鋼鐵工業用的冶金機械、提升裝置、軋輥調整裝置等;土木水利工程用的防洪閘門及堤壩裝置、河床升降裝置、橋梁操縱機構等，發電廠渦輪機調速裝置、發電廠等等。
二、液壓傳動技術的原理與特點
1、液壓傳動的介紹
液壓傳動是用液體作為工作介質來傳遞能量和進行控制的傳動方式。液壓傳動和氣壓傳動并稱為流體傳動，是根據17世紀帕斯卡提出的液體靜壓力傳動原理而發展起來的一門新興技術，是工農業生產中應用廣泛的技術。
2、液壓傳動的優點
(1)體積小、重量輕，因此慣性力較小，當突然過載或停車時，不會發生大的沖擊，
(2)能在給定范圍內平穩的自動調節牽引速度，并可實現無極調速;
(3)換向容易，在不改變電機旋轉方向的情況下，可以較方便地實現工作機構旋轉和直線往復運動的轉換;
(4)液壓泵和液壓馬達之間用油管連接，在空間布置上彼此不受嚴格限制;
(5) 由于采用油液為工作介質，元件相對運動表面間能自行潤滑，磨損小，使用壽命長;
(6)操縱控制簡便，自動化程度高;
(7)容易實現過載保護。
液壓傳動有許多突出的優點，因此它的應用非常廣泛，如一般工業用的塑料加工機械、壓力機械、機床等，行走機械中的工程機械、建筑機械、農業機械、汽車等，鋼鐵工業用的冶金機械、提升裝置、軋輥調整裝置等，土木水利工程用的防洪閘門及堤壩裝置、河床升降裝置、橋粱操縱機構等;發電廠渦輪機調速裝置等等，船舶用的甲板起重機械、船頭門、艙壁閥、船尾推進器等，特殊技術用的控制裝置、測量浮標、升降旋轉舞臺等。
3、液壓傳動的基本原理
液壓傳動的基本原理是在密閉的容器內，利用有壓力的油液作為工作介質來實現能量轉換和傳遞動力的。其中的液體稱為工作介質，一般為礦物油，它的作用和機械傳動中的皮帶、鏈條和齒輪等傳動元件相類似。液壓傳動是利用帕斯卡原理!帕斯卡原理是大概就是:在密閉環境中，向液體施加一個力，這個液體會向各個方向傳遞這個力!力的大小不變!液壓傳動就是利用這個物理性質，向一個物體施加一個力，利用帕斯卡原理使這個力變大!從而起到舉起重物的效果!
液壓傳動在閥門行業也得到很大的應用,如閥門的機床制造加工設備、閥門]液壓試驗設備、閥門的液壓傳動裝置等。
