4WRKE10E50L-3X/6EG24EK31/F1D3M力士樂比例閥

4WRKE10E50L-3X/6EG24EK31/F1D3M力士樂比例閥 德國原裝博世力士樂REXROTH比例閥

比例閥按功能分為三大類

(1)比例壓力閥。有溢流閥減壓閥,分別有直動和先導兩種結(jié)構(gòu);可連續(xù)地或按比例地遠程控制其輸出油液壓力;

(2)比例換向閥。有直動和先導兩種結(jié)構(gòu),直動閥有帶位移傳感器和不帶位移傳感器兩類。由于使用了比例電磁鐵閥芯不僅可以換位，而且換位的行程可以連續(xù)地或按比例地變化。因而連通油口間的通流面積也可以連續(xù)或按比例地變化。所以比例換向閥不僅能夠控制執(zhí)行元件的方向而且能夠控制其速度。因為這個原因比例閥中的比例換向閥應用也較為普遍;

(3)比例流量閥。有比例調(diào)速閥和比例溢流流量控制閥,可連續(xù)地或按比例地遠程控制其輸出流量。

比例閥的輸入單元是電-機械轉(zhuǎn)換器,它將輸入的電信號轉(zhuǎn)換成機械量轉(zhuǎn)換器有伺服電機和步進電機力馬達和力矩馬達比例電磁鐵等形式。但常用的比例閥大都采用了比例電磁鐵，比例電磁鐵根據(jù)電磁原理設計,能使其產(chǎn)生的機械量(力或力矩和位移)與輸入電信號(電流)的大小成比例,再連續(xù)地控制液壓閥閥芯的位置，進而實現(xiàn)連續(xù)地控制液壓系統(tǒng)的壓力方向和流量。比例電磁鐵的結(jié)構(gòu)，它由線圈、銜鐵推桿等組成,當有信號輸入線圈時,線圈內(nèi)磁場對銜鐵產(chǎn)生作用力,銜鐵在磁場中按信號電流的大小和方向成比例連續(xù)地運動,再通過固連在一起的銷釘帶動推桿運動,從而控制滑閥閥芯的運動。應用較廣泛的比例電磁鐵是耐高壓直流比例電磁鐵。

4WRKE10E50L-3X/6EG24EK31/F1D3M力士樂比例閥

4WRKE 型閥門是二級比例方向閥。它們控制流動方向和流量。主級是受位置控制的，這樣，控制閥芯位置在流量較大的情況下也不會受液動力的影響。

這種閥門主要由先導控制閥 (1)、殼體 (8)、主控制閥芯 (7)、蓋（5 和 6）、對中彈簧 (4)、感應式位置傳感器 (9) 和減壓閥 (3) 組成。如果沒有輸入信號，則主控制閥芯 (7) 就會被對中彈簧 (4) 固定在中心位置。蓋（5 和 6）中的兩個控制腔通過控制閥芯 (2) 連接到油箱。主控制閥芯 (7) 通過感應式位置傳感器 (9) 連接到合適的控制電子元件。主控制閥芯 (7) 的位置改變和放大器求和點控制值的改變，都能產(chǎn)生差動電壓。比較控制值和理論值期間，通過電子元件確定可能的控制偏差，并向先導控制閥 (1) 的比例電磁鐵施加電流。電流會在線圈中產(chǎn)生不斷通過推桿來操作控制閥芯的力。通過控制剖面激活的流量會導致主控制閥芯的調(diào)整。連接了感應式位置傳感器 (9) 內(nèi)核的主控制閥芯 (7) 會一直移動，直到理論值與控制值相符。在控制狀態(tài)下，主控制閥芯 (7) 處于力平衡狀態(tài)并停留在該控制位置。控制閥芯行程和控制開口與控制值成比例改變�？刂齐娮釉�件集成到閥門中。通過對閥門和電子元件進行調(diào)節(jié)，可以將批量生產(chǎn)設備導致的偏差保持在較低水平。

不得讓油箱管路排空運行；在相應的安裝條件下，必須安裝一個預載閥（預載壓力約為 2 bar）。

閥門特征

二級閥的基本設置包括我們的比例閥模塊。“主級零電位”的零電位調(diào)節(jié)是工廠預設的，可以通過控制電子元件中的電位計，在公稱行程的 ±30 % 范圍內(nèi)進行調(diào)節(jié)。拆下蓋殼體前面的保護塞后，方可對集成控制電子元件進行檢修。必須重新調(diào)節(jié)更換后的先導控制閥或控制電子元件。全部調(diào)節(jié)工作只能由指定的專業(yè)人員執(zhí)行。

注意！

零電位更改可能導致系統(tǒng)損壞，故只能由指定的專業(yè)人員執(zhí)行!

4WRKE10E50L-3X/6EG24EK31/F1D3M力士樂比例閥供應型號

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R900977501 4WRKE16E1-200L-3X/6EG24EK31/A5D3M

電液比例閥是閥內(nèi)比例電磁鐵輸入電壓信號產(chǎn)生相應動作，使工作閥閥芯產(chǎn)生位移，閥口尺寸發(fā)生改變并以此完成與輸入電壓成比例壓力、流量輸出元件。閥芯位移也可以以機械、液壓或電形式進行反饋。電液比例閥具有形式種類多樣、容易組成使用電氣及計算機控制各種電液系統(tǒng)、控制精度高、安裝使用靈活以及抗污染能力強等多方面優(yōu)點，應用領域日益拓寬。近年研發(fā)生產(chǎn)插裝式比例閥和比例多路閥充分考慮到工程機械使用特點，具有先導控制、負載傳感和壓力補償?shù)裙δ堋?/p>

比例閥VT-NE30-2X的輸入壓力為零.即.;時,輸出腔的壓力通過比例閥皮圈凸筋間空酸從唇口泄去高壓,同時,當比例閥芯所受的彈簧力大于向右的液壓力時,比例閥彈簧將比例閥芯推回原始位置,使比例閥芯與比例閥皮圈內(nèi)孔完全分離而完全泄壓.此時輸入輸出壓力為零.隨著輸入壓力.加大,即左加大,使比例滑閥單向力平衡遭破壞.當<>&;6-時,比例閥芯左移與比例閥皮圈產(chǎn)生間隙形成節(jié)流并混合比倒閥常見的故障為:1,輸入輸出壓力同步.2,低壓時輔人輸出壓力同步,高壓時輸入輸出壓力正常.3,低壓時輸入輸出壓力正常,高壓時輸入輸出壓力不正常.,1994.№為零時為混合比倒圉工作性能試驗示意圖.試驗時,先將管內(nèi)的空氣排凈,然后分別取低,中,高三個壓力進行試驗,輸入輔出壓力符合即為合格

博世力士樂rexroth比例流量閥 力士樂rexroth液壓閥 德國博世力士樂rexroth比例方向閥

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0811403112 3FREX6B-1X/7,5L2G24-25N9Z4MM

0811403111 STROMREGELVENTIL

0811403110 STROMREGELVENTIL

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0811A03017 THROTTLEVALVEVERS0811403017-PU1

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