力士樂外控先導式比例方向閥.WRH…是通過壓(ya)(ya)力控(kong)(kong)(kong)制(zhi)(zhi)閥(fa)(fa)(fa)進行(xing)外(wai)控(kong)(kong)(kong)操作(zuo)的先(xian)導(dao)式比(bi)例方(fang)向(xiang)(xiang)閥(fa)(fa)(fa)。不帶(dai)電(dian)(dian)(dian)(dian)(dian)氣位置反饋，不帶(dai)/帶(dai)集(ji)成電(dian)(dian)(dian)(dian)(dian)子(zi)元件(jian)（OBE）的先(xian)導(dao)式比(bi)例方(fang)向(xiang)(xiang)閥(fa)(fa)(fa)。它的zui大工作(zuo)壓(ya)(ya)力350bar和zui大流(liu)量2800l/min。力士(shi)樂.WRH…型比(bi)例方(fang)向(xiang)(xiang)閥(fa)(fa)(fa)包括鑄鐵閥(fa)(fa)(fa)體，控(kong)(kong)(kong)制(zhi)(zhi)閥(fa)(fa)(fa)芯，兩根(gen)對中彈(dan)簧及(ji)其支撐墊(dian)圈(quan)和一至二(er)(er)個比(bi)例電(dian)(dian)(dian)(dian)(dian)磁(ci)鐵。內部裝有一或二(er)(er)塊電(dian)(dian)(dian)(dian)(dian)控(kong)(kong)(kong)板的控(kong)(kong)(kong)制(zhi)(zhi)盒，可以安裝在任一電(dian)(dian)(dian)(dian)(dian)磁(ci)鐵上，其中電(dian)(dian)(dian)(dian)(dian)控(kong)(kong)(kong)板數目與電(dian)(dian)(dian)(dian)(dian)磁(ci)鐵數目相同。對于帶(dai)兩個電(dian)(dian)(dian)(dian)(dian)磁(ci)鐵型號(hao)(hao)，則控(kong)(kong)(kong)制(zhi)(zhi)盒與另一電(dian)(dian)(dian)(dian)(dian)磁(ci)鐵插座面對面布置，通過DIN接(jie)頭(tou)(tou)，兩芯電(dian)(dian)(dian)(dian)(dian)纜和套管(guan)連接(jie)。控(kong)(kong)(kong)制(zhi)(zhi)盒通過一個四(si)針接(jie)頭(tou)(tou)連接(jie)電(dian)(dian)(dian)(dian)(dian)源和控(kong)(kong)(kong)制(zhi)(zhi)信號(hao)(hao)，型號(hao)(hao)為(wei)M12×1。電(dian)(dian)(dian)(dian)(dian)磁(ci)鐵線圈(quan)包括控(kong)(kong)(kong)制(zhi)(zhi)盒，可以在軸上±90°內轉動。 該電(dian)(dian)(dian)(dian)控(kong)(kong)(kong)單(dan)元(yuan)輸出(chu)到電(dian)(dian)(dian)(dian)磁鐵的(de)電(dian)(dian)(dian)(dian)流按控(kong)(kong)(kong)制(zhi)信(xin)號(hao)變(bian)化(hua)，電(dian)(dian)(dian)(dian)磁鐵推動閥(fa)芯的(de)位移與控(kong)(kong)(kong)制(zhi)電(dian)(dian)(dian)(dian)流成比例。 電(dian)(dian)(dian)(dian)控(kong)(kong)(kong)單(dan)元(yuan)提供了(le)以下(xia)的(de)調節能力：偏置(zhi)，增益(yi)，斜坡多發(fa)生(sheng)器的(de)上(shang)升(sheng)、下(xia)降(jiang)時間，顫振信(xin)號(hao)發(fa)生(sheng)器的(de)幅值和頻率（2個(ge)頻率）。各個(ge)功能以LED指示(shi)燈標示(shi)。 為(wei)用戶提供＋10V（12V+5V）的(de)穩壓(ya)電(dian)(dian)(dian)(dian)源，使(shi)用這些電(dian)(dian)(dian)(dian)壓(ya)時，電(dian)(dian)(dian)(dian)壓(ya)控(kong)(kong)(kong)制(zhi)信(xin)號(hao)由>=1K歐(ou)的(de)電(dian)(dian)(dian)(dian)位器引出(chu)。 電(dian)(dian)(dian)(dian)控(kong)(kong)(kong)板(ban)的(de)電(dian)(dian)(dian)(dian)壓(ya)或電(dian)(dian)(dian)(dian)流控(kong)(kong)(kong)制(zhi)模式(shi)轉換，由SW1至SW3的(de)開關位置(zhi)確定(ding)（見第6頁表）。 閥(fa)體表面(mian)磷化(hua)處理(li)，電(dian)(dian)(dian)(dian)磁鐵線圈表面(mian)鍍鋅處理(li)。 R900246134 4WRH 10 W8-85-7X//M R900247003 4WRH 16 W9-100-7X//M
R900501074 4WRH 10 W3-85-5X//M ;R900503418 4WRH 25 E1-325-5X//M
R900504926 4WRH 25 EB325-5X//M R900505742 4WRH 32 E520-5X//M
R900515869 4WRH 32 W520-5X//M R900515952 4WRH 25 W3-325-5X//M
R900517466 4WRH 32 E360-5X//M R900519341 4WRH 10 W1-50-5X//M
R900521405 4WRH 32 E2-520-5X//M R900535178 4WRH 10 E1-50-5X//M
R900548350 4WRH 16 W2-150-6X//M ; R900549261 4WRH 16 W100-6X//M
R900550636 4WRH 16 W1-150-6X//M R900556824 4WRH 16 W1-100-6X//M
R900559923 4WRH 16 WA150-6X//M R900567385 4WRH 16 W150-6X//M
R900570914 4WRH 16 E150-6X//M R900587130 4WRH 32 E1-520-5X//M
R900587579 4WRH 25 E220-5X//M R900588401 4WRH 10 W50-5X//M
R900588612 4WRH 10 W2-85-5X//M R900589150 4WRH 25 W220-5X//M
R900589156 4WRH 10 E50-5X//M R900589307 4WRH 10 W25-5X//M
R900590818 4WRH 10 W85-5X//M R900591812 4WRH 25 W325-5X//M
R900591980 4WRH 10 E25-5X//M R900595105 4WRH 10 W1-85-5X//M
R900595723 4WRH 10 E85-5X//M R900598496 4WRH 25 W1-325-5X//M
R900598497 4WRH 32 W1-520-5X//M R900599219 4WRH 25 E325-5X//M
R900616689 4WRH 10 W6-50-7X//M R900618109 4WRH 16 W8-100-7X//M
R900618204 4WRH 25 E1-220-7X//M R900618353 4WRH 32 E1-520-7X//M
R900704472 4WRH 10 W6-25-7X//M R900704612 4WRH 25 EA325-7X//M
R900711240 4WRH 10 W8-25-7X//M R900718512 4WRH 32 W6-360-7X//V
R900718519 4WRH 16 W8-100-7X//V R900723729 4WRH 25 W8-220-7X//V
R900742963 4WRH 32 E520-7X//M R900742964 4WRH 25 E220-7X//M
R900746657 4WRH 25 W8-325-7X//M R900758928 4WRH 32 W8-520-7X//V
R900900793 4WRH 16 E100-6X//M R900904774 4WRH 16 E2-100-6X//M
R900906423 4WRH 16 E1-100-6X//M R900920214 4WRH 25 W3-325-5X//V
R900920579 4WRH 32 W520-5X//V R900922607 4WRH 32 W360-5X//V
R900925005 4WRH 10 W85-5X//V R900925343 4WRH 10 WB50-5X//V
R900937605 4WRH 32 E1-360-5X//V R900945796 4WRH 16 E3-150-6X//M
R900947568 4WRH 16 W6-150-7X//V R900948341 4WRH 25 W8-325-7X//V
R900948342 4WRH 25 W6-220-7X//V R900949118 4WRH 16 W6-100-7X//V
R900949458 4WRH 25 W6-325-7X//V R900949766 4WRH 25 E1-325-7X//V
R900950013 4WRH 16 E3-150-7X//V ;R900950476 4WRH 32 E520-7X//V
R900950501 4WRH 16 E150-7X//V R900950991 4WRH 16 W6A150-7X//V
R900951871 4WRH 10 W6-25-7X//V R900952037 4WRH 10 E25-7X//V
R900952786 4WRH 10 W6-85-7X//V R900953297 4WRH 10 E85-7X//V
R900953796 4WRH 10 E50-7X//V R900953797 4WRH 10 W6-50-7X//V
R900953798 4WRH 16 W100-7X//V-115 R900956682 4WRH 25 W9-325-7X//V
R900957474 4WRH 16 M100-7X//M R900957875 4WRH 10 E50-7X//M
R900957936 4WRH 10 E85-7X//M R900958669 4WRH 16 E100-7X//V
R900959262 4WRH 16 E150-7X//M R900959574 4WRH 25 E1-325-7X//M
R900960146 4WRH 16 E1-100-7X//V R900960183 4WRH 16 W6-150-7X//M
R900960577 4WRH 32 W6-520-7X//M R900961889 4WRH 25 E325-7X//M
R900961935 4WRH 16 EA150-7X//V R900961976 4WRH 25 W6-325-7X//M
R900962049 4WRH 16 E1-150-7X//V R900963354 4WRH 10 E1-50-7X//V
R900963843 4WRH 16 W6-100-7X//M ; ; R900964592 4WRH 25 W6-220-7X//M
R900965891 4WRH 16 W8-150-7X//M R900966758 4WRH 10 E25-7X//M
R900967653 4WRH 32 W8-520-7X//M R900968261 4WRH 10 E1-85-7X//M
R900969173 4WRH 25 E220-7X//V R900969176 4WRH 32 W6-520-7X//V 力(li)士(shi)樂比例方向閥R900972623 4WRH 16 E100-7X//M R900969585 4WRH 10 EA25-7X//M ;
R900974609 4WRH 10 W6-85-7X//M R900974980 4WRH 16 W100-7X//M
R900974981 4WRH 10 W50-7X//M R900975375 4WRH 25 W9-325-7X//M
R900975946 4WRH 16 W8-150-7X//V R900976416 4WRH 25 W3-325-7X//M
R901025843 4WRH 16 W150-7X//M R901047469 4WRH 25 E325-7X//V
R901061841 4WRH 16 W9-150-7X//M R901064032 4WRH 25 W8-220-7X//M
R901065504 4WRH 10 E1-25-7X//M R901066568 4WRH 32 W6-360-7X//M
R901110843 4WRH 10 E1-50-7X//M R901118106 4WRH 32 E1-360-7X//M
R901119189 4WRH 32 E360-7X//M ;R901129842 4WRH 25 E3-325-7X//M
R901133986 4WRH 16 EA150-7X//M R901143492 4WRH 25 EA325-7X/J/M-95
R901156754 4WRH 25 E3-325-7X//V R901169034 4WRH 32 W8-360-7X//M
R901192846 4WRH 10 W8-85-7X//V ; R901218951 4WRH 32 W6-520-7X/J/M
R901219635 4WRH 32 E520-7X/J/M R901219636 4WRH 32 E360-7X/J/M
R901219639 4WRH 32 E1-520-7X/J/M R901219640 4WRH 32 E1-360-7X/J/M
R901283314 4WRH 10 W8-50-7X//M R978917960 4WRH 16 EB150-7X//V
R978919639 4WRH 32 E1-360-7X//V R978935162 4WRH 32 E1-520-7X//V 力士樂外控先導式比例方向閥.WRH…基本構成包括：帶主控制閥芯（11）和對中彈簧（12）的主閥（10）；配流閥板（16）。它的功能：配流(liu)閥板（16）使引到壓(ya)力腔(qiang)（13）的控制油(you)口A與油口(kou)Y 接通，使控制油口(kou)B與(yu)油口(kou)X接通。對油(you)口X加壓時，主控制(zhi)閥芯(xin)（11）會移(yi)動到右側（P至(zhi)B和A至T）。對油口Y加(jia)壓時(shi)，主(zhu)控制閥芯會(hui)移動到(dao)左側（P至A和B至T）。主閥中(zhong)的先(xian)導壓力不得超(chao)過25 bar（對于規格52，不(bu)得超過16bar）！ 
現在的用的(de)(de)(de)(de)(de)(de)都是電(dian)-液(ye)比(bi)例復合(he)控(kong)制。 首(shou)先(xian)，比(bi)例閥(fa)(fa)(fa)(fa)必須有(you)一個配套的(de)(de)(de)(de)(de)(de)放(fang)大(da)(da)器(qi)(qi)，它接受來(lai)自于計(ji)算機，或(huo)者PLC，或(huo)者電(dian)位(wei)器(qi)(qi)（滑(hua)動(dong)變阻器(qi)(qi)）的(de)(de)(de)(de)(de)(de)控(kong)制信(xin)(xin)(xin)號(hao)(hao)(hao)，把(ba)0-20毫安微弱的(de)(de)(de)(de)(de)(de)信(xin)(xin)(xin)號(hao)(hao)(hao)放(fang)大(da)(da)到(dao)(dao)0-800毫安。計(ji)算機的(de)(de)(de)(de)(de)(de)信(xin)(xin)(xin)號(hao)(hao)(hao)太(tai)弱了。 然(ran)后，放(fang)大(da)(da)器(qi)(qi)把(ba)放(fang)大(da)(da)的(de)(de)(de)(de)(de)(de)信(xin)(xin)(xin)號(hao)(hao)(hao)傳送到(dao)(dao)電(dian)磁(ci)閥(fa)(fa)(fa)(fa)，電(dian)磁(ci)閥(fa)(fa)(fa)(fa)依(yi)據傳來(lai)的(de)(de)(de)(de)(de)(de)信(xin)(xin)(xin)號(hao)(hao)(hao)大(da)(da)小，克服彈簧(huang)力(li)(li)，調節推桿的(de)(de)(de)(de)(de)(de)行程(cheng)(cheng)，輸出流量大(da)(da)約1升/分鐘(zhong),壓(ya)(ya)(ya)力(li)(li)隨信(xin)(xin)(xin)號(hao)(hao)(hao)變化的(de)(de)(de)(de)(de)(de)控(kong)制油。 再后，控(kong)制油到(dao)(dao)達主閥(fa)(fa)(fa)(fa)芯(xin)的(de)(de)(de)(de)(de)(de)兩端(duan)，依(yi)據不同的(de)(de)(de)(de)(de)(de)壓(ya)(ya)(ya)力(li)(li)，推動(dong)閥(fa)(fa)(fa)(fa)芯(xin)移動(dong)相應的(de)(de)(de)(de)(de)(de)行程(cheng)(cheng)，因為閥(fa)(fa)(fa)(fa)芯(xin)本(ben)身(shen)有(you)錐(zhui)(zhui)度(du)的(de)(de)(de)(de)(de)(de)臺階，與閥(fa)(fa)(fa)(fa)體(ti)組合(he)，不同的(de)(de)(de)(de)(de)(de)行程(cheng)(cheng)得到(dao)(dao)不同的(de)(de)(de)(de)(de)(de)過流面積，再入(ru)口(kou)壓(ya)(ya)(ya)力(li)(li)穩(wen)定的(de)(de)(de)(de)(de)(de)情況(kuang)下，得到(dao)(dao)不同的(de)(de)(de)(de)(de)(de)流量。zui終實現(xian)比(bi)例功能(neng)。 比(bi)例壓(ya)(ya)(ya)力(li)(li)閥(fa)(fa)(fa)(fa)是由(you)計(ji)算機（或(huo)其他），放(fang)大(da)(da)器(qi)(qi)，比(bi)例電(dian)磁(ci)鐵，錐(zhui)(zhui)度(du)臺階的(de)(de)(de)(de)(de)(de)閥(fa)(fa)(fa)(fa)芯(xin)，入(ru)口(kou)壓(ya)(ya)(ya)力(li)(li)補(bu)償閥(fa)(fa)(fa)(fa)（單聯可以不要），梭閥(fa)(fa)(fa)(fa)，內置卸(xie)荷(he)閥(fa)(fa)(fa)(fa)（把(ba)多余的(de)(de)(de)(de)(de)(de)流量送回油箱）等構成的(de)(de)(de)(de)(de)(de)一個完整的(de)(de)(de)(de)(de)(de)體(ti)系(xi)。才能(neng)真正實現(xian)比(bi)例功能(neng)。 |
