HED8OH-2X/200K14力士樂壓力繼電器現(xiàn)貨庫存

HED8OH-2X/200K14力士樂壓力繼電器現(xiàn)貨庫存

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1.壓力繼電器，液壓術(shù)語，是液壓系統(tǒng)中當流體壓力達到預(yù)定值時，使電接點動作的元件。

2.是將壓力轉(zhuǎn)換成電信號的液壓元器件，客戶根據(jù)自身的壓力設(shè)計需要，通過調(diào)節(jié)壓力繼電器，實現(xiàn)在某一設(shè)定的壓力時，輸出一個電信號的功能。

工作原理

壓力繼電器是利用液體的壓力來啟閉電氣觸點的液壓電氣轉(zhuǎn)換元件。當系統(tǒng)壓力達到壓力繼電器的調(diào)定值時，發(fā)出電信號，使電氣元件（如電磁鐵、電機、時間繼電器、電磁離合器等）動作，使油路卸壓、換向，執(zhí)行元件實現(xiàn)順序動作，或關(guān)閉電動機使系統(tǒng)停止工作，起安全保護作用等。

壓力繼電器有柱塞式、膜片式、彈簧管式和波紋管式四種結(jié)構(gòu)形式。下面對柱塞式壓力繼電器（見圖）的工作原理作一介紹：

當從繼電器下端進油口3進入的液體壓力達到調(diào)定壓力值時，推動柱塞2上移，此位移通過杠桿放大后推動微動開關(guān)4動作。改變彈簧1的壓縮量，可以調(diào)節(jié)繼電器的動作壓力。

應(yīng)用場合：用于安全保護、控制執(zhí)行元件的順序動作、用于泵的啟閉、用于泵的卸荷。

注意： 壓力繼電器必須放在壓力有明顯變化的地方才能輸出電信號。若將壓力繼電器放在回油路上，由于回油路直接接回油箱，壓力也沒有變化，所以壓力繼電器也不會工作。

2選用標準

根據(jù)所測對象的壓力來選用,比如所測壓力范圍在8KG以內(nèi),那么就要選用額定10KG的壓力繼電器,還有要符合電路中的額定電壓,接口管徑的大小

3使用方法

首先用于安全保護時，將壓力繼電器設(shè)置在夾緊液壓缸的一端，液壓泵啟動后，首先將工件夾緊，此時夾緊液壓缸的右腔壓力升高，當升高到壓力繼電器的調(diào)定值時，壓力繼電器動作，發(fā)出電信號使2YA通電，于是切削液壓缸進刀切削。在加工期間，壓力繼電器微動開關(guān)的常開觸點始終閉合。若工件沒有夾緊，壓力繼電器2斷開，于是2YA斷電，切削液壓缸立即停止進刀，從而避免工件未夾緊被切削而出事故。

其實用于控制執(zhí)行元件的順序動作時，液壓泵啟動后，首先2YA通電，液壓缸左腔進油，推動活塞方向右移。當碰到限位器(或死擋鐵)后，系統(tǒng)壓力升高，壓力繼電器發(fā)出電信號，使1YA通電，高壓油進入液壓缸的左腔，推動活塞右移。這時若3YA也通電，液壓缸的活塞快速右移;若3YA斷電，則液壓缸的活塞慢速右移，其慢速運動速度由節(jié)流閥調(diào)節(jié)。

再次用于液壓泵卸荷時，壓力繼電器不是控制液壓泵停止轉(zhuǎn)動，而是控制二位二通電磁閥，將液壓泵5輸出的壓力油流回油箱，使其卸荷。

較后用于液壓泵的啟閉時，有兩個液壓泵，高壓小流量泵，低壓大流量泵。當活塞快速下降時，兩泵同時輸出壓力油。當液壓缸活塞桿抵住工件開始加壓時，壓力繼電器在壓力油作用下發(fā)出動作，觸動微動開關(guān)，將常閉觸點斷開，使液壓泵停轉(zhuǎn)。在加工過程中減慢液壓缸的速度，同時減少動力消耗。

R901099809 HED8OH-2X/200K14A

R901107119 HED8OH-2X/200K14AS

R901109530 HED8OH-2X/200K14ASV

R901099790 HED8OH-2X/200K14AV

R901099811 HED8OH-2X/200K14KS

R901099792 HED8OH-2X/200K14KSV

R901107369 HED8OH-2X/200K14KW

R901125810 HED8OH-2X/200K14KWV

R901102362 HED8OH-2X/200K14S

R901109074 HED8OH-2X/200K14SV

R901099789 HED8OH-2X/200K14V

R901148816 HED8OH-2X/200K35KS

R901171767 HED8OH-2X/200K35S

R901270140 HED8OH-2X/200P110K14S

R901139168 HED8OH-2X/200P145K14S

R901139169 HED8OH-2X/200P185K14S

R901099813 HED8OH-2X/200U150K14V

R901099814 HED8OH-2X/200U180K14V

R901099793 HED8OH-2X/200U185K14V

R901101640 HED8OH-2X/350K14

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R901099817 HED8OH-2X/350K14KSV

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R901102713 HED8OH-2X/350K14S

R901109065 HED8OH-2X/350K14SV

R901099815 HED8OH-2X/350K14V

R901388617 HED8OH-2X/350K35

R901417246 HED8OH-2X/350K3高等S

R901265207 HED8OH-2X/350K35S

R901128257 HED8OH-2X/50F004K14SV

R901219262 HED8OH-2X/50F010K14V

R901102349 HED8OH-2X/50K14

R901108007 HED8OH-2X/50K14A

R901107086 HED8OH-2X/50K14AS

R901109050 HED8OH-2X/50K14ASV

R901099798 HED8OH-2X/50K14AV

R901102356 HED8OH-2X/50K14KS

R901099800 HED8OH-2X/50K14KSV

R901107394 HED8OH-2X/50K14KW

R901109049 HED8OH-2X/50K14KWV

R901102712 HED8OH-2X/50K14S

R901215098 HED8OH-2X/50K14SV

R901099796 HED8OH-2X/50K14V

R901156058 HED8OH-2X/50K35KS

R901231720 HED8OH-2X/50K35S

R901101658 HED8OH-2X/630K14

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R901109039 HED8OH-2X/630K14ASV

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R901109029 HED8OH-2X/630K14S

R901101649 HED8OH-2X/630K14V

R901369355 HED8OH-2X=200K14

R901342162 HED8OH-2X=50K14

R901232375 HED8OH-2X=50K14S

R987140394 HED8OH2X/350K14 PISTOKE

R901102747 HED8OP-2X/100K14

R901108229 HED8OP-2X/100K14A

R901107790 HED8OP-2X/100K14AS

R901162988 HED8OP-2X/100K14ASV

R901321355 HED8OP-2X/100K14AV

R901107997 HED8OP-2X/100K14KS

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R901109024 HED8OP-2X/200K14ASV

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R901109004 HED8OP-2X/200K14SV

R901107397 HED8OP-2X/200K14V

R901336909 HED8OP-2X/200K35S

R901233431 HED8OP-2X/200P110K14S

R901108992 HED8OP-2X/200P160K14S

R901106453 HED8OP-2X/350K14

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R901108531 HED8OP-2X/350K14ASV

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R901434285 HED8OP-2X/350P120K14KS

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R901108147 HED8OP-2X/630K14

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R901280745 HED8OP-2X/630K14AS

R901171255 HED8OP-2X/630K14ASV

R901124650 HED8OP-2X/630K14KS

R901315271 HED8OP-2X/630K14KW

R901106449 HED8OP-2X/630K14S

R901108529 HED8OP-2X/630K14V

R901437158 HED8OP-2X/630K35

R901251521 HED8OP-2X=50K14AS

R987437823 HED8OH-2X/100K14SSETTO80BARFALLING

R987411811 HED8OP2X/350K14SSETTO280BAR

R971012678 HED8OA-2X/350K14S(12.3MPA)

R971012679 HED8OA-2X/350K14S(17.2MPA)

R971012681 HED8OA-2X/350K14S(21.6MPA)

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