美國(guó)威格士電磁閥，VICKERS葉片泵伊頓和威格士擁有的產(chǎn)品品牌：Eaton、vickers、char-lynn、aeroquip和hydroline等等，包括全部液壓產(chǎn)品線，可以為廣大用戶提供動(dòng)力源、控制元件、執(zhí)行器、連接件、污染控制和全套的液壓系統(tǒng)。 　　威格士流體動(dòng)力的主要市場(chǎng)包括建筑、農(nóng)業(yè)、傳統(tǒng)工業(yè)、冶金、礦山、船舶、園藝、和風(fēng)電等。依靠其*的分銷網(wǎng)絡(luò)，無(wú)論用戶在何處都可以享受到威格士流體動(dòng)力提供的快捷便利的服務(wù)，從傳統(tǒng)工業(yè)到行走機(jī)械，從單個(gè)元件到整個(gè)液壓系統(tǒng)，威格士流體動(dòng)力是您在范圍內(nèi)液壓產(chǎn)品的可靠伙伴。
VICKERS子母葉片泵特點(diǎn)
　　1、子母葉片的結(jié)構(gòu)設(shè)計(jì)，減少了葉片對(duì)定子的沖擊，在較高的工作壓力和高轉(zhuǎn)速下，性能更穩(wěn)定，壽命更長(zhǎng)。 　　2、子母葉片結(jié)構(gòu)本身具有低噪音的特性。12葉片的設(shè)計(jì)、流量脈動(dòng)很小，噪音更低。 　　3、多排量的選擇。以及泵芯的插裝式結(jié)構(gòu)，使用戶使用更靈活，維修更方便。 　　公司理念 　　VICKERS威格士流體動(dòng)力，打造您值得信賴的液壓產(chǎn)
VICKERS電磁閥原理
美國(guó)威格士電磁閥，VICKERS葉片泵　　VICKERS電磁閥和安全閥為一體，組成先導(dǎo)式壓力閥，該閥即是卸荷閥又是安全閥，有時(shí)又是溢流閥．卸荷時(shí)其控制油道貫穿各路換向閥，同前述卸荷油道．當(dāng)各路換向閥處于中立位置時(shí)，卸荷閥的控制油道（見(jiàn)圖1b和圖2）貫穿各路換向閥并與油箱連通．卸荷時(shí)，大部分油液卸荷，通道短，壓力損失低．任一路閥換向工作，便切斷控制油道，油源來(lái)油就從換向閥進(jìn)入執(zhí)行元件工作，其工作壓力大小由導(dǎo)閥控制．此時(shí)系統(tǒng)壓力為導(dǎo)閥調(diào)整壓力．該種卸荷方式，即使換向閥路數(shù)增加，只是控制油道增加，卸荷壓力增加不大，始終保持較低卸荷壓力，此種卸荷方式多用于手動(dòng)換向閥，卸荷可靠． 　　VICKERS電磁閥（又是安全閥）的主閥按配合形式不同可分為三級(jí)同心、二級(jí)同心和滑閥式三類．其中滑閥式結(jié)構(gòu)工作壓力低，控制壓力精度不高；三級(jí)同心結(jié)構(gòu)雖成熟，目前應(yīng)用較廣，但與二級(jí)同心式比較，不及二級(jí)同心式動(dòng)作靈敏，規(guī)格相同，行程相同時(shí)，二級(jí)同心結(jié)構(gòu)的通油能力遠(yuǎn)大于三級(jí)同心結(jié)構(gòu)；二級(jí)同心式控制壓力穩(wěn)定，加工工藝性好，二級(jí)同心式應(yīng)用前景廣闊，這里以二級(jí)同心結(jié)構(gòu)，討論其結(jié)構(gòu)尺寸設(shè)計(jì)方法． 　　VICKERS電磁閥出來(lái)的先導(dǎo)油控制主換向閥閥芯的移動(dòng)，使工作泵的來(lái)油進(jìn)入動(dòng)臂油缸實(shí)現(xiàn)動(dòng)臂上升。比例先導(dǎo)減壓閥的輸出壓力越大，控制主換向閥閥芯的位移越大，主換向閥通過(guò)的流量越大，動(dòng)臂上升的速度越快。當(dāng)操作手柄拉*限位置時(shí)，手柄中的限位電磁鐵通電，手柄在極限位置被吸合。動(dòng)臂以zui大的速度上升，當(dāng)升至動(dòng)臂上位限位開關(guān)所限定的位置時(shí)，操作手柄限位電磁鐵斷電，手柄自動(dòng)恢復(fù)到中位，動(dòng)臂就可保持在所限定的位置。在動(dòng)臂上升的過(guò)程中，若需要?jiǎng)颖墼谀骋晃恢猛Ａ?，則需將操作手柄退回中位。 　　VICKERS電磁閥主要用在電氣液壓伺服系統(tǒng)中作為執(zhí)行元件（見(jiàn)液壓伺服系統(tǒng)）。在伺服系統(tǒng)中，液壓執(zhí)行機(jī)構(gòu)同電氣及氣動(dòng)執(zhí)行機(jī)構(gòu)相比，具有快速性好、單位重量輸出功率大、傳動(dòng)平穩(wěn)、抗干擾能力強(qiáng)等特點(diǎn)。另一方面，在伺服系統(tǒng)中傳遞信號(hào)和校正特性時(shí)多用電氣元件。因此，現(xiàn)代高性能的伺服系統(tǒng)也都采用電液方式，伺服閥就是這種系統(tǒng)的必需元件。
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