一、行程開關有什么作用

行程開關是一種常用的小電流主令電器，是一種根據運動部件的行程位置而切換電路工作狀態的控制電器，它的作用主要是通過改變電動機的運動狀態，從而控制機械動作或用于程序控制，并實現電路間的切換。在電氣控制系統中，行程開關的作用是實現順序控制、定位控制和位置狀態的檢測，用于控制機械設備的行程及限位保護，因此也叫限位開關。行程開關在很多生活電器以及工業領域都有廣泛的應用，如果您需要購買行程開關，可以先來看看行程開關十大品牌。

二、行程開關符號是什么

行(xing)程(cheng)開關(guan)是根據運動(dong)部件位置(zhi)而切(qie)換電路的(de)(de)自動(dong)控(kong)制電器，廣泛用(yong)于各類機(ji)床(chuang)和起重機(ji)械，用(yong)以控(kong)制其行(xing)程(cheng)、進行(xing)終端(duan)限位保護，電工常用(yong)各種符號(hao)來表(biao)示(shi)開關(guan)等電器元件，在電路圖上，行(xing)程(cheng)開關(guan)用(yong)SQ表(biao)示(shi)，有的(de)(de)也會(hui)用(yong)ST表(biao)示(shi)，文字(zi)符號(hao)SQ是國家標準，ST是國際(ji)標準，都(dou)是對的(de)(de)，但(dan)是國內一(yi)般情(qing)況下(xia)都(dou)是用(yong)SQ。

三、行程開關工作原理

行(xing)(xing)(xing)程(cheng)開關(guan)(guan)是(shi)主令(ling)電器里的(de)(de)(de)一種，其動(dong)(dong)(dong)作(zuo)原理和(he)按鈕沒(mei)有什么差別(bie)，主要區別(bie)是(shi)：它不是(shi)用(yong)手進行(xing)(xing)(xing)按壓操作(zuo)而是(shi)用(yong)機(ji)械(xie)設備的(de)(de)(de)一些運動(dong)(dong)(dong)部(bu)(bu)件(jian)與它的(de)(de)(de)傳動(dong)(dong)(dong)部(bu)(bu)位(wei)發生碰撞，來促使行(xing)(xing)(xing)程(cheng)開關(guan)(guan)的(de)(de)(de)觸(chu)頭動(dong)(dong)(dong)作(zuo)的(de)(de)(de)（常開觸(chu)點閉(bi)合，常閉(bi)觸(chu)點斷開），能夠達(da)到分斷或者切(qie)換電路的(de)(de)(de)目的(de)(de)(de)。行(xing)(xing)(xing)程(cheng)開關(guan)(guan)工作(zuo)時(shi)，利用(yong)內(nei)部(bu)(bu)的(de)(de)(de)元件(jian)碰撞，達(da)到開啟電路或關(guan)(guan)閉(bi)電路的(de)(de)(de)功能。正常情況下，行(xing)(xing)(xing)程(cheng)開關(guan)(guan)一旦開啟，便(bian)會給機(ji)械(xie)運動(dong)(dong)(dong)添加(jia)上(shang)一個運動(dong)(dong)(dong)的(de)(de)(de)軌(gui)跡，只要機(ji)械(xie)達(da)到設定(ding)的(de)(de)(de)位(wei)置，便(bian)會自動(dong)(dong)(dong)停止運轉，或是(shi)改變運動(dong)(dong)(dong)狀態(tai)，從而達(da)到開關(guan)(guan)的(de)(de)(de)目的(de)(de)(de)。

四、行程開關和限位開關有什么區別

1、定(ding)義區(qu)別(bie)：行(xing)(xing)(xing)程開(kai)(kai)(kai)關(guan)(guan)(guan)(guan)一(yi)(yi)般指一(yi)(yi)種(zhong)(zhong)小(xiao)電(dian)(dian)流主(zhu)令電(dian)(dian)器(qi)，當生(sheng)產機(ji)(ji)械(xie)運(yun)(yun)動(dong)(dong)(dong)(dong)(dong)部件發(fa)生(sheng)碰撞時(shi)(shi)，通過觸頭動(dong)(dong)(dong)(dong)(dong)作(zuo)(zuo)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)發(fa)生(sheng)，來(lai)實(shi)現分斷或(huo)接通電(dian)(dian)路(lu)，從而(er)達到控(kong)制(zhi)(zhi)電(dian)(dian)器(qi)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)目的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)。行(xing)(xing)(xing)程開(kai)(kai)(kai)關(guan)(guan)(guan)(guan)可(ke)以(yi)(yi)(yi)(yi)用(yong)(yong)(yong)(yong)來(lai)限(xian)(xian)(xian)(xian)制(zhi)(zhi)機(ji)(ji)械(xie)運(yun)(yun)動(dong)(dong)(dong)(dong)(dong)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)形成和(he)位(wei)(wei)置。讓(rang)運(yun)(yun)動(dong)(dong)(dong)(dong)(dong)機(ji)(ji)械(xie)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)形成或(huo)位(wei)(wei)置反向運(yun)(yun)動(dong)(dong)(dong)(dong)(dong)、自(zi)(zi)(zi)動(dong)(dong)(dong)(dong)(dong)停(ting)(ting)止(zhi)(zhi)、變速運(yun)(yun)動(dong)(dong)(dong)(dong)(dong)等等。限(xian)(xian)(xian)(xian)位(wei)(wei)開(kai)(kai)(kai)關(guan)(guan)(guan)(guan)可(ke)以(yi)(yi)(yi)(yi)分為接觸式和(he)非(fei)接觸式兩種(zhong)(zhong)，它(ta)(ta)是(shi)(shi)一(yi)(yi)種(zhong)(zhong)可(ke)以(yi)(yi)(yi)(yi)用(yong)(yong)(yong)(yong)來(lai)限(xian)(xian)(xian)(xian)定(ding)機(ji)(ji)械(xie)設備的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)運(yun)(yun)動(dong)(dong)(dong)(dong)(dong)極(ji)(ji)限(xian)(xian)(xian)(xian)位(wei)(wei)置的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)電(dian)(dian)器(qi)開(kai)(kai)(kai)關(guan)(guan)(guan)(guan)。限(xian)(xian)(xian)(xian)位(wei)(wei)開(kai)(kai)(kai)關(guan)(guan)(guan)(guan)更加直觀，它(ta)(ta)對機(ji)(ji)械(xie)有一(yi)(yi)定(ding)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)限(xian)(xian)(xian)(xian)制(zhi)(zhi)作(zuo)(zuo)用(yong)(yong)(yong)(yong)，可(ke)以(yi)(yi)(yi)(yi)用(yong)(yong)(yong)(yong)來(lai)保(bao)護開(kai)(kai)(kai)關(guan)(guan)(guan)(guan)不受損壞。非(fei)接觸式限(xian)(xian)(xian)(xian)位(wei)(wei)開(kai)(kai)(kai)關(guan)(guan)(guan)(guan)有很多種(zhong)(zhong)，比(bi)(bi)如干簧管(guan)式、光電(dian)(dian)式、感(gan)應式等等。2、功(gong)能(neng)(neng)區(qu)別(bie)：行(xing)(xing)(xing)程開(kai)(kai)(kai)關(guan)(guan)(guan)(guan)可(ke)以(yi)(yi)(yi)(yi)安(an)裝(zhuang)在(zai)(zai)(zai)靜止(zhi)(zhi)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)物(wu)體(ti)(ti)上面(mian)，比(bi)(bi)如門框或(huo)固定(ding)架(jia)等等。它(ta)(ta)也(ye)可(ke)以(yi)(yi)(yi)(yi)安(an)裝(zhuang)在(zai)(zai)(zai)運(yun)(yun)動(dong)(dong)(dong)(dong)(dong)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)物(wu)體(ti)(ti)上面(mian)，比(bi)(bi)如平時(shi)(shi)生(sheng)活中使用(yong)(yong)(yong)(yong)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)門。當運(yun)(yun)動(dong)(dong)(dong)(dong)(dong)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)物(wu)體(ti)(ti)接近(jin)靜止(zhi)(zhi)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)物(wu)體(ti)(ti)時(shi)(shi)，開(kai)(kai)(kai)關(guan)(guan)(guan)(guan)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)接點會(hui)(hui)(hui)引起閉合或(huo)斷開(kai)(kai)(kai)，從而(er)控(kong)制(zhi)(zhi)電(dian)(dian)路(lu)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)動(dong)(dong)(dong)(dong)(dong)作(zuo)(zuo)。而(er)且行(xing)(xing)(xing)程開(kai)(kai)(kai)關(guan)(guan)(guan)(guan)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)靈(ling)敏(min)度比(bi)(bi)較高，體(ti)(ti)積也(ye)比(bi)(bi)較小(xiao)，還具有防腐(fu)蝕性和(he)耐用(yong)(yong)(yong)(yong)性等諸多特點。最(zui)(zui)(zui)重要的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)是(shi)(shi)，行(xing)(xing)(xing)程開(kai)(kai)(kai)關(guan)(guan)(guan)(guan)即便是(shi)(shi)在(zai)(zai)(zai)水(shui)里(li)，也(ye)能(neng)(neng)正(zheng)常工(gong)(gong)作(zuo)(zuo)。不僅價格實(shi)惠，而(er)且使用(yong)(yong)(yong)(yong)壽命長。限(xian)(xian)(xian)(xian)位(wei)(wei)開(kai)(kai)(kai)關(guan)(guan)(guan)(guan)分為極(ji)(ji)限(xian)(xian)(xian)(xian)限(xian)(xian)(xian)(xian)位(wei)(wei)開(kai)(kai)(kai)關(guan)(guan)(guan)(guan)和(he)工(gong)(gong)作(zuo)(zuo)限(xian)(xian)(xian)(xian)位(wei)(wei)開(kai)(kai)(kai)關(guan)(guan)(guan)(guan)。工(gong)(gong)作(zuo)(zuo)限(xian)(xian)(xian)(xian)位(wei)(wei)開(kai)(kai)(kai)關(guan)(guan)(guan)(guan)可(ke)以(yi)(yi)(yi)(yi)用(yong)(yong)(yong)(yong)來(lai)給出(chu)機(ji)(ji)構動(dong)(dong)(dong)(dong)(dong)作(zuo)(zuo)到位(wei)(wei)信號，一(yi)(yi)般安(an)裝(zhuang)在(zai)(zai)(zai)機(ji)(ji)構需要改(gai)(gai)變工(gong)(gong)況的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)位(wei)(wei)置上，在(zai)(zai)(zai)開(kai)(kai)(kai)關(guan)(guan)(guan)(guan)動(dong)(dong)(dong)(dong)(dong)作(zuo)(zuo)發(fa)出(chu)后給出(chu)信號，然后再進(jin)行(xing)(xing)(xing)別(bie)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)動(dong)(dong)(dong)(dong)(dong)作(zuo)(zuo)。極(ji)(ji)限(xian)(xian)(xian)(xian)限(xian)(xian)(xian)(xian)位(wei)(wei)開(kai)(kai)(kai)關(guan)(guan)(guan)(guan)可(ke)以(yi)(yi)(yi)(yi)防止(zhi)(zhi)機(ji)(ji)構動(dong)(dong)(dong)(dong)(dong)作(zuo)(zuo)超出(chu)設計范(fan)圍(wei)，發(fa)生(sheng)意外事故。一(yi)(yi)般安(an)裝(zhuang)在(zai)(zai)(zai)器(qi)械(xie)動(dong)(dong)(dong)(dong)(dong)作(zuo)(zuo)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)最(zui)(zui)(zui)遠處，用(yong)(yong)(yong)(yong)來(lai)防止(zhi)(zhi)器(qi)械(xie)動(dong)(dong)(dong)(dong)(dong)作(zuo)(zuo)過大，出(chu)現器(qi)械(xie)損壞的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)情況。3、用(yong)(yong)(yong)(yong)途區(qu)別(bie)：行(xing)(xing)(xing)程開(kai)(kai)(kai)關(guan)(guan)(guan)(guan)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)應用(yong)(yong)(yong)(yong)比(bi)(bi)較廣泛。最(zui)(zui)(zui)典型的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)是(shi)(shi)在(zai)(zai)(zai)冰(bing)(bing)箱(xiang)方面(mian)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)使用(yong)(yong)(yong)(yong)，在(zai)(zai)(zai)打開(kai)(kai)(kai)冰(bing)(bing)箱(xiang)門的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)時(shi)(shi)候，冰(bing)(bing)箱(xiang)里(li)面(mian)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)燈(deng)就(jiu)會(hui)(hui)(hui)自(zi)(zi)(zi)動(dong)(dong)(dong)(dong)(dong)亮起，當關(guan)(guan)(guan)(guan)上冰(bing)(bing)箱(xiang)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)門后，冰(bing)(bing)箱(xiang)里(li)面(mian)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)燈(deng)就(jiu)會(hui)(hui)(hui)自(zi)(zi)(zi)動(dong)(dong)(dong)(dong)(dong)熄滅。不但方便了(le)(le)人們的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)日常生(sheng)活，而(er)且也(ye)更加節約能(neng)(neng)源，減(jian)少資源浪費(fei)。除(chu)了(le)(le)在(zai)(zai)(zai)冰(bing)(bing)箱(xiang)上的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)運(yun)(yun)用(yong)(yong)(yong)(yong)，日常使用(yong)(yong)(yong)(yong)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)洗衣(yi)機(ji)(ji)也(ye)運(yun)(yun)用(yong)(yong)(yong)(yong)了(le)(le)行(xing)(xing)(xing)程開(kai)(kai)(kai)關(guan)(guan)(guan)(guan)，特別(bie)是(shi)(shi)在(zai)(zai)(zai)洗衣(yi)機(ji)(ji)脫(tuo)水(shui)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)時(shi)(shi)候，脫(tuo)水(shui)桶(tong)會(hui)(hui)(hui)高速運(yun)(yun)轉，有的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)老人或(huo)小(xiao)孩兒安(an)全意識較差。可(ke)能(neng)(neng)會(hui)(hui)(hui)在(zai)(zai)(zai)洗衣(yi)機(ji)(ji)脫(tuo)水(shui)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)時(shi)(shi)候，打開(kai)(kai)(kai)洗衣(yi)機(ji)(ji)蓋，這本身是(shi)(shi)非(fei)常危險的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)行(xing)(xing)(xing)為。但應用(yong)(yong)(yong)(yong)了(le)(le)行(xing)(xing)(xing)程開(kai)(kai)(kai)關(guan)(guan)(guan)(guan)后，就(jiu)能(neng)(neng)很好的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)改(gai)(gai)善這種(zhong)(zhong)問題，從而(er)保(bao)證了(le)(le)用(yong)(yong)(yong)(yong)戶的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)安(an)全。行(xing)(xing)(xing)程開(kai)(kai)(kai)關(guan)(guan)(guan)(guan)在(zai)(zai)(zai)起重機(ji)(ji)械(xie)、電(dian)(dian)梯控(kong)制(zhi)(zhi)電(dian)(dian)路(lu)等等許(xu)多領域也(ye)已經廣泛運(yun)(yun)用(yong)(yong)(yong)(yong)，發(fa)揮(hui)了(le)(le)它(ta)(ta)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)優勢。限(xian)(xian)(xian)(xian)位(wei)(wei)開(kai)(kai)(kai)關(guan)(guan)(guan)(guan)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)用(yong)(yong)(yong)(yong)途也(ye)很廣，不僅是(shi)(shi)在(zai)(zai)(zai)家(jia)用(yong)(yong)(yong)(yong)電(dian)(dian)器(qi)和(he)工(gong)(gong)業控(kong)制(zhi)(zhi)上等等。在(zai)(zai)(zai)電(dian)(dian)梯井(jing)道的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)最(zui)(zui)(zui)上方和(he)最(zui)(zui)(zui)下方會(hui)(hui)(hui)安(an)裝(zhuang)限(xian)(xian)(xian)(xian)位(wei)(wei)開(kai)(kai)(kai)關(guan)(guan)(guan)(guan)，用(yong)(yong)(yong)(yong)來(lai)控(kong)制(zhi)(zhi)電(dian)(dian)梯的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)停(ting)(ting)止(zhi)(zhi)和(he)減(jian)速。在(zai)(zai)(zai)錄像機(ji)(ji)和(he)錄音(yin)機(ji)(ji)中，常常會(hui)(hui)(hui)用(yong)(yong)(yong)(yong)到倒退(tui)或(huo)者快進(jin)，這時(shi)(shi)磁帶會(hui)(hui)(hui)快速地轉動(dong)(dong)(dong)(dong)(dong)。但是(shi)(shi)到達磁帶端點的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)時(shi)(shi)候，就(jiu)會(hui)(hui)(hui)自(zi)(zi)(zi)動(dong)(dong)(dong)(dong)(dong)停(ting)(ting)下來(lai)。