德國(guó)Rexroth力士樂(lè)比例閥主要功能
  德國(guó)Rexroth力士樂(lè)廠家從我司2006年成立以來(lái)，一直給我司提供zui低折扣和的德國(guó)Rexroth力士樂(lè)電磁閥、比例閥、柱塞泵、齒輪泵、油泵、換向閥等產(chǎn)品。我司保證給客戶的產(chǎn)品以保證客戶正常使用，讓客戶實(shí)實(shí)在在買到放心產(chǎn)品。歡迎大家過(guò)來(lái)詢價(jià)。

德國(guó)Rexroth力士樂(lè)比例閥主要功能

  Rexroth力士樂(lè)比例閥的發(fā)展主要有兩個(gè)途徑一是用比例電磁鐵取代傳統(tǒng)液壓閥的手動(dòng)調(diào)節(jié)裝置或取代普通電磁鐵發(fā)展起來(lái)的;二是由電液伺服閥簡(jiǎn)化結(jié)構(gòu)、降低精度發(fā)展起來(lái)的。下面介紹的比例閥均指前者，它是當(dāng)今比例閥的主流。與普通液壓閥可以互換。
 

  Rexroth力士樂(lè)比例電磁鐵是直流電磁鐵，但它與普通直流電磁鐵不同。普通直流電磁鐵的銜鐵只有吸合和斷開(kāi)兩個(gè)工作位置，并且在吸合時(shí)磁路中幾乎沒(méi)有氣隙.而比例電磁鐵要求吸合力或位移與給定電流成比例。并在銜鐵的全部工作行程上，磁路中保持一定的氣隙‘.其結(jié)構(gòu)主要由極靴1、線圈2、殼體5和銜鐵10等組成。線圈2中通電后產(chǎn)生磁場(chǎng)，因隔磁環(huán)4的存在。使磁力線主要部分通過(guò)銜鐵10、氣隙和極靴1，形成回路口極靴對(duì)銜鐵產(chǎn)生吸力門在線圈中電流一定時(shí)。吸力的大小因極靴1與銜鐵間的距離不同而變化。但銜鐵在氣隙適中的一段行程中，吸力隨位置的改變發(fā)生的變化很小。
 

  設(shè)計(jì)中就使比例電磁鐵的銜鐵在這段行程中工作。因此。改變線圈中的電流，即可在銜鐵上得到與其成正比的吸力。用比例電磁鐵代替螺旋手柄來(lái)調(diào)整液壓閥，就能使輸出樂(lè)力或流量與輸人電流對(duì)應(yīng)成比例地發(fā)生變化。
 

  Rexroth力士樂(lè)比例閥用于模擬控制，是介于普通開(kāi)關(guān)控制與伺服控制之間的控制方式，它也特別適合于
設(shè)備的革新或改造。使設(shè)備自動(dòng)化控制水平大為提高。其在現(xiàn)代液雌系統(tǒng)中占比例很大口
與普通液壓閥相比.
比例閥的優(yōu)點(diǎn)是:
①能簡(jiǎn)單地實(shí)現(xiàn)遠(yuǎn)距離控制:
②能連續(xù)地、按比例地控制液壓系統(tǒng)的壓力和流量。從而實(shí)現(xiàn)對(duì)執(zhí)行機(jī)構(gòu)的位置、速度和力的連續(xù)控制，并能防止或減小壓力、速度變換時(shí)的沖擊;③油路簡(jiǎn)化，元件數(shù)量少。
Rexroth力士樂(lè)比例閥適用于既要求能連續(xù)控制脹力、流量.和方向.而又不需要很I的控制精度的場(chǎng)合。
Rexroth力士樂(lè)比例閥也分為壓力閥、流量閥和方向閥幾大類。近來(lái)又出現(xiàn)了功能復(fù)合化的趨勢(shì)。

德國(guó)Rexroth力士樂(lè)比例閥主要功能

部分型號(hào):
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