液(ye)(ye)(ye)控(kong)(kong)(kong)伺(si)(si)服(fu)閥(fa)(fa)主(zhu)要是(shi)(shi)指電(dian)(dian)(dian)液(ye)(ye)(ye)伺(si)(si)服(fu)閥(fa)(fa),它(ta)在接(jie)受電(dian)(dian)(dian)氣(qi)模擬(ni)信(xin)號(hao)(hao)(hao)(hao)后(hou)，相(xiang)應輸(shu)(shu)(shu)出(chu)(chu)調制(zhi)的(de)(de)(de)(de)流(liu)(liu)(liu)(liu)(liu)量(liang)和(he)(he)壓(ya)力。它(ta)既是(shi)(shi)電(dian)(dian)(dian)液(ye)(ye)(ye)轉換(huan)元(yuan)件(jian)，也(ye)是(shi)(shi)功率放(fang)(fang)大(da)(da)(da)元(yuan)件(jian)，它(ta)能(neng)(neng)夠(gou)將小(xiao)功率的(de)(de)(de)(de)微(wei)弱(ruo)電(dian)(dian)(dian)氣(qi)輸(shu)(shu)(shu)入(ru)信(xin)號(hao)(hao)(hao)(hao)轉換(huan)為大(da)(da)(da)功率的(de)(de)(de)(de)液(ye)(ye)(ye)壓(ya)能(neng)(neng)（流(liu)(liu)(liu)(liu)(liu)量(liang)和(he)(he)壓(ya)力）輸(shu)(shu)(shu)出(chu)(chu)。在電(dian)(dian)(dian)液(ye)(ye)(ye)伺(si)(si)服(fu)系(xi)統中(zhong)，它(ta)將電(dian)(dian)(dian)氣(qi)部分與液(ye)(ye)(ye)壓(ya)部分連接(jie)起(qi)來(lai)(lai)，實(shi)現電(dian)(dian)(dian)液(ye)(ye)(ye)信(xin)號(hao)(hao)(hao)(hao)的(de)(de)(de)(de)轉換(huan)與液(ye)(ye)(ye)壓(ya)放(fang)(fang)大(da)(da)(da)。電(dian)(dian)(dian)液(ye)(ye)(ye)伺(si)(si)服(fu)閥(fa)(fa)是(shi)(shi)電(dian)(dian)(dian)液(ye)(ye)(ye)伺(si)(si)服(fu)系(xi)統控(kong)(kong)(kong)制(zhi)的(de)(de)(de)(de)核心(xin)。液(ye)(ye)(ye)控(kong)(kong)(kong)伺(si)(si)服(fu)閥(fa)(fa)是(shi)(shi)在伺(si)(si)服(fu)系(xi)統中(zhong)將電(dian)(dian)(dian)信(xin)號(hao)(hao)(hao)(hao)輸(shu)(shu)(shu)入(ru)轉換(huan)為功率較大(da)(da)(da)的(de)(de)(de)(de)壓(ya)力或流(liu)(liu)(liu)(liu)(liu)量(liang)壓(ya)力信(xin)號(hao)(hao)(hao)(hao)輸(shu)(shu)(shu)出(chu)(chu)的(de)(de)(de)(de)執行元(yuan)件(jian)。它(ta)是(shi)(shi)一種電(dian)(dian)(dian)液(ye)(ye)(ye)轉換(huan)和(he)(he)功率放(fang)(fang)大(da)(da)(da)元(yuan)件(jian)。伺(si)(si)服(fu)閥(fa)(fa)的(de)(de)(de)(de)靈(ling)敏度高(gao)，快速性好，能(neng)(neng)將很(hen)小(xiao)的(de)(de)(de)(de)電(dian)(dian)(dian)信(xin)號(hao)(hao)(hao)(hao)（例如(ru)10毫安）轉換(huan)成(cheng)(cheng)很(hen)大(da)(da)(da)的(de)(de)(de)(de)液(ye)(ye)(ye)壓(ya)功率（如(ru)幾十匹(pi)馬力以上），可(ke)以驅動(dong)多種類(lei)型(xing)的(de)(de)(de)(de)負載(zai)。過去人(ren)們曾把噴(pen)嘴檔(dang)(dang)板閥(fa)(fa)、射(she)流(liu)(liu)(liu)(liu)(liu)管(guan)或滑(hua)閥(fa)(fa)伺(si)(si)服(fu)馬達等(deng)液(ye)(ye)(ye)壓(ya)放(fang)(fang)大(da)(da)(da)裝置都列入(ru)伺(si)(si)服(fu)閥(fa)(fa)范圍內。20世紀(ji)70年(nian)代以來(lai)(lai)，伺(si)(si)服(fu)閥(fa)(fa)一般(ban)僅(jin)指電(dian)(dian)(dian)液(ye)(ye)(ye)伺(si)(si)服(fu)閥(fa)(fa)。典(dian)型(xing)的(de)(de)(de)(de)伺(si)(si)服(fu)閥(fa)(fa)由永(yong)磁力矩馬達、噴(pen)嘴、檔(dang)(dang)板、閥(fa)(fa)芯(xin)、閥(fa)(fa)套和(he)(he)控(kong)(kong)(kong)制(zhi)腔組成(cheng)(cheng)(見圖)。當輸(shu)(shu)(shu)入(ru)線圈通入(ru)電(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)時，檔(dang)(dang)板向(xiang)(xiang)右移動(dong)，使右邊(bian)噴(pen)嘴的(de)(de)(de)(de)節流(liu)(liu)(liu)(liu)(liu)作用加強，流(liu)(liu)(liu)(liu)(liu)量(liang)減(jian)少，右側背壓(ya)上升；同時使左(zuo)邊(bian)噴(pen)嘴節流(liu)(liu)(liu)(liu)(liu)作用減(jian)小(xiao)，流(liu)(liu)(liu)(liu)(liu)量(liang)增(zeng)加，左(zuo)側背壓(ya)下降。閥(fa)(fa)芯(xin)兩(liang)端的(de)(de)(de)(de)作用力失去平(ping)衡(heng), 閥(fa)(fa)芯(xin)遂向(xiang)(xiang)左(zuo)移動(dong)。高(gao)壓(ya)油從S流(liu)(liu)(liu)(liu)(liu)向(xiang)(xiang)C2，送到負載(zai)。負載(zai)回油通過 C1流(liu)(liu)(liu)(liu)(liu)過回油口，進入(ru)油箱(xiang)。閥(fa)(fa)芯(xin)的(de)(de)(de)(de)位移量(liang)與力矩馬達的(de)(de)(de)(de)輸(shu)(shu)(shu)入(ru)電(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)成(cheng)(cheng)正比(bi)，作用在閥(fa)(fa)芯(xin)上的(de)(de)(de)(de)液(ye)(ye)(ye)壓(ya)力與彈(dan)簧力相(xiang)平(ping)衡(heng)，因此(ci)在平(ping)衡(heng)狀態下力矩馬達的(de)(de)(de)(de)差動(dong)電(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)與閥(fa)(fa)芯(xin)的(de)(de)(de)(de)位移成(cheng)(cheng)正比(bi)。如(ru)果輸(shu)(shu)(shu)入(ru)的(de)(de)(de)(de)電(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)反(fan)向(xiang)(xiang)，則流(liu)(liu)(liu)(liu)(liu)量(liang)也(ye)反(fan)向(xiang)(xiang)。表中(zhong)是(shi)(shi)伺(si)(si)服(fu)閥(fa)(fa)的(de)(de)(de)(de)分類(lei)。

電(dian)(dian)(dian)磁繼電(dian)(dian)(dian)器一(yi)(yi)般由鐵(tie)(tie)芯(xin)、線(xian)圈(quan)、銜(xian)鐵(tie)(tie)、觸(chu)(chu)(chu)(chu)(chu)點(dian)(dian)(dian)(dian)簧(huang)等組(zu)成的(de)。只要在(zai)(zai)線(xian)圈(quan)兩(liang)端加上一(yi)(yi)定的(de)電(dian)(dian)(dian)壓(ya)(ya)(ya)，線(xian)圈(quan)中就(jiu)會流(liu)過一(yi)(yi)定的(de)電(dian)(dian)(dian)流(liu)，從(cong)(cong)而(er)(er)(er)(er)產生電(dian)(dian)(dian)磁效(xiao)應，銜(xian)鐵(tie)(tie)就(jiu)會在(zai)(zai)電(dian)(dian)(dian)磁力吸(xi)(xi)(xi)引的(de)作用下(xia)克(ke)服返回彈(dan)簧(huang)的(de)拉力吸(xi)(xi)(xi)向鐵(tie)(tie)芯(xin)，從(cong)(cong)而(er)(er)(er)(er)帶(dai)動(dong)銜(xian)鐵(tie)(tie)的(de)動(dong)觸(chu)(chu)(chu)(chu)(chu)點(dian)(dian)(dian)(dian)與(yu)靜(jing)觸(chu)(chu)(chu)(chu)(chu)點(dian)(dian)(dian)(dian)（常(chang)(chang)開(kai)(kai)(kai)(kai)觸(chu)(chu)(chu)(chu)(chu)點(dian)(dian)(dian)(dian)）吸(xi)(xi)(xi)合。當(dang)線(xian)圈(quan)斷電(dian)(dian)(dian)后，電(dian)(dian)(dian)磁的(de)吸(xi)(xi)(xi)力也隨之(zhi)消失，銜(xian)鐵(tie)(tie)就(jiu)會在(zai)(zai)彈(dan)簧(huang)的(de)反作用力返回原(yuan)來(lai)的(de)位(wei)置(zhi)，使動(dong)觸(chu)(chu)(chu)(chu)(chu)點(dian)(dian)(dian)(dian)與(yu)原(yuan)來(lai)的(de)靜(jing)觸(chu)(chu)(chu)(chu)(chu)點(dian)(dian)(dian)(dian)（常(chang)(chang)閉觸(chu)(chu)(chu)(chu)(chu)點(dian)(dian)(dian)(dian)）釋放(fang)。這樣吸(xi)(xi)(xi)合、釋放(fang)，從(cong)(cong)而(er)(er)(er)(er)達到(dao)(dao)了在(zai)(zai)電(dian)(dian)(dian)路(lu)中的(de)導通(tong)(tong)(tong)(tong)、切(qie)斷的(de)目的(de)。對于(yu)繼電(dian)(dian)(dian)器的(de)“常(chang)(chang)開(kai)(kai)(kai)(kai)、常(chang)(chang)閉”觸(chu)(chu)(chu)(chu)(chu)點(dian)(dian)(dian)(dian)，可以這樣來(lai)區分：繼電(dian)(dian)(dian)器線(xian)圈(quan)未通(tong)(tong)(tong)(tong)電(dian)(dian)(dian)時(shi)處于(yu)斷開(kai)(kai)(kai)(kai)狀態(tai)的(de)靜(jing)觸(chu)(chu)(chu)(chu)(chu)點(dian)(dian)(dian)(dian)，稱(cheng)(cheng)為(wei)“常(chang)(chang)開(kai)(kai)(kai)(kai)觸(chu)(chu)(chu)(chu)(chu)點(dian)(dian)(dian)(dian)”；處于(yu)接(jie)通(tong)(tong)(tong)(tong)狀態(tai)的(de)靜(jing)觸(chu)(chu)(chu)(chu)(chu)點(dian)(dian)(dian)(dian)稱(cheng)(cheng)為(wei)“常(chang)(chang)閉觸(chu)(chu)(chu)(chu)(chu)點(dian)(dian)(dian)(dian)”。繼電(dian)(dian)(dian)器一(yi)(yi)般有兩(liang)股電(dian)(dian)(dian)路(lu)，為(wei)低壓(ya)(ya)(ya)控(kong)制電(dian)(dian)(dian)路(lu)和高(gao)壓(ya)(ya)(ya)工作電(dian)(dian)(dian)路(lu)。當(dang)線(xian)圈(quan)通(tong)(tong)(tong)(tong)電(dian)(dian)(dian)（電(dian)(dian)(dian)壓(ya)(ya)(ya)規(gui)格有ac380v、ac220v或dc220v、dc24v等）時(shi)，銜(xian)鐵(tie)(tie)及托板(ban)被(bei)鐵(tie)(tie)心(xin)吸(xi)(xi)(xi)引而(er)(er)(er)(er)瞬(shun)時(shi)下(xia)移，使瞬(shun)時(shi)動(dong)作觸(chu)(chu)(chu)(chu)(chu)點(dian)(dian)(dian)(dian)接(jie)通(tong)(tong)(tong)(tong)或斷開(kai)(kai)(kai)(kai)。但是(shi)活(huo)(huo)塞(sai)桿(gan)和杠桿(gan)不能同時(shi)跟(gen)著銜(xian)鐵(tie)(tie)一(yi)(yi)起下(xia)落，因(yin)為(wei)活(huo)(huo)塞(sai)桿(gan)的(de)上端連(lian)著氣(qi)室中的(de)橡皮(pi)膜(mo)，當(dang)活(huo)(huo)塞(sai)桿(gan)在(zai)(zai)釋放(fang)彈(dan)簧(huang)的(de)作用下(xia)開(kai)(kai)(kai)(kai)始(shi)向下(xia)運動(dong)時(shi)，橡皮(pi)膜(mo)隨之(zhi)向下(xia)凹，上面空(kong)氣(qi)室的(de)空(kong)氣(qi)變(bian)得稀(xi)薄(bo)而(er)(er)(er)(er)使活(huo)(huo)塞(sai)桿(gan)受到(dao)(dao)阻(zu)尼作用而(er)(er)(er)(er)緩慢下(xia)降(jiang)。經過一(yi)(yi)定時(shi)間(jian)(jian)，活(huo)(huo)塞(sai)桿(gan)下(xia)降(jiang)到(dao)(dao)一(yi)(yi)定位(wei)置(zhi)，便(bian)通(tong)(tong)(tong)(tong)過杠桿(gan)推動(dong)延(yan)(yan)時(shi)觸(chu)(chu)(chu)(chu)(chu)點(dian)(dian)(dian)(dian)動(dong)作，使動(dong)斷觸(chu)(chu)(chu)(chu)(chu)點(dian)(dian)(dian)(dian)斷開(kai)(kai)(kai)(kai)，動(dong)合觸(chu)(chu)(chu)(chu)(chu)點(dian)(dian)(dian)(dian)閉合。從(cong)(cong)線(xian)圈(quan)通(tong)(tong)(tong)(tong)電(dian)(dian)(dian)到(dao)(dao)延(yan)(yan)時(shi)觸(chu)(chu)(chu)(chu)(chu)點(dian)(dian)(dian)(dian)完成動(dong)作，這段時(shi)間(jian)(jian)就(jiu)是(shi)繼電(dian)(dian)(dian)器的(de)延(yan)(yan)時(shi)時(shi)間(jian)(jian)。延(yan)(yan)時(shi)時(shi)間(jian)(jian)的(de)長短(duan)可以用螺釘調節空(kong)氣(qi)室進氣(qi)孔(kong)的(de)大小(xiao)來(lai)改變(bian)。

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SCHUN機械配件AGE-XY-080-P0324481翊霈優供

SCHUN機械配件AGE-XY-080-P0324481翊霈優供