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)(xing)程(cheng)開關是根據運動部件(jian)位(wei)置而切換電路的自動控制電器，廣泛用(yong)(yong)(yong)于(yu)各類機(ji)床和(he)起(qi)重機(ji)械，用(yong)(yong)(yong)以(yi)控制其行(xing)(xing)程(cheng)、進行(xing)(xing)終端(duan)限位(wei)保(bao)護，電工常用(yong)(yong)(yong)各種符號(hao)來表(biao)示開關等電器元件(jian)，在電路圖上，行(xing)(xing)程(cheng)開關用(yong)(yong)(yong)SQ表(biao)示，有的也會用(yong)(yong)(yong)ST表(biao)示，文(wen)字符號(hao)SQ是國(guo)家標準(zhun)，ST是國(guo)際標準(zhun)，都是對(dui)的，但是國(guo)內一般情況(kuang)下(xia)都是用(yong)(yong)(yong)SQ。

三、行程開關工作原理

行程(cheng)(cheng)開(kai)(kai)關(guan)(guan)(guan)是主令電(dian)器里的(de)(de)(de)(de)一(yi)種(zhong)，其動(dong)(dong)作原理和按鈕(niu)沒有(you)什么差(cha)別(bie)，主要區別(bie)是：它(ta)不是用手進行按壓操作而是用機(ji)械(xie)設備的(de)(de)(de)(de)一(yi)些運動(dong)(dong)部(bu)(bu)件(jian)(jian)與(yu)它(ta)的(de)(de)(de)(de)傳(chuan)動(dong)(dong)部(bu)(bu)位(wei)發生碰撞，來(lai)促使(shi)行程(cheng)(cheng)開(kai)(kai)關(guan)(guan)(guan)的(de)(de)(de)(de)觸頭動(dong)(dong)作的(de)(de)(de)(de)（常開(kai)(kai)觸點閉合，常閉觸點斷(duan)開(kai)(kai)），能夠達(da)到分(fen)斷(duan)或者(zhe)切換電(dian)路的(de)(de)(de)(de)目(mu)的(de)(de)(de)(de)。行程(cheng)(cheng)開(kai)(kai)關(guan)(guan)(guan)工作時(shi)，利用內部(bu)(bu)的(de)(de)(de)(de)元件(jian)(jian)碰撞，達(da)到開(kai)(kai)啟電(dian)路或關(guan)(guan)(guan)閉電(dian)路的(de)(de)(de)(de)功能。正常情(qing)況下(xia)，行程(cheng)(cheng)開(kai)(kai)關(guan)(guan)(guan)一(yi)旦(dan)開(kai)(kai)啟，便會(hui)給(gei)機(ji)械(xie)運動(dong)(dong)添加上(shang)一(yi)個運動(dong)(dong)的(de)(de)(de)(de)軌(gui)跡，只要機(ji)械(xie)達(da)到設定的(de)(de)(de)(de)位(wei)置，便會(hui)自動(dong)(dong)停止運轉，或是改變(bian)運動(dong)(dong)狀(zhuang)態，從而達(da)到開(kai)(kai)關(guan)(guan)(guan)的(de)(de)(de)(de)目(mu)的(de)(de)(de)(de)。

四、行程開關和限位開關有什么區別

1、定義區(qu)(qu)別：行(xing)(xing)(xing)(xing)程開(kai)(kai)(kai)(kai)(kai)(kai)(kai)(kai)關(guan)(guan)(guan)(guan)(guan)一(yi)(yi)般(ban)指(zhi)一(yi)(yi)種(zhong)(zhong)小(xiao)(xiao)(xiao)電(dian)(dian)流主(zhu)令電(dian)(dian)器(qi)(qi)，當生(sheng)產機(ji)(ji)(ji)(ji)械(xie)運(yun)(yun)(yun)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)部件發(fa)生(sheng)碰(peng)撞(zhuang)時(shi)，通過觸頭動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)作(zuo)(zuo)(zuo)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)發(fa)生(sheng)，來實(shi)現(xian)(xian)分斷或(huo)(huo)(huo)接(jie)(jie)通電(dian)(dian)路(lu)，從而(er)(er)達到(dao)控(kong)(kong)制(zhi)電(dian)(dian)器(qi)(qi)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)目(mu)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)。行(xing)(xing)(xing)(xing)程開(kai)(kai)(kai)(kai)(kai)(kai)(kai)(kai)關(guan)(guan)(guan)(guan)(guan)可(ke)(ke)(ke)以(yi)用(yong)(yong)(yong)(yong)來限(xian)(xian)(xian)(xian)(xian)制(zhi)機(ji)(ji)(ji)(ji)械(xie)運(yun)(yun)(yun)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)形(xing)(xing)成和(he)(he)(he)(he)位(wei)(wei)(wei)(wei)置(zhi)(zhi)。讓運(yun)(yun)(yun)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)機(ji)(ji)(ji)(ji)械(xie)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)形(xing)(xing)成或(huo)(huo)(huo)位(wei)(wei)(wei)(wei)置(zhi)(zhi)反向(xiang)運(yun)(yun)(yun)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)、自(zi)(zi)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)停(ting)止(zhi)、變速(su)運(yun)(yun)(yun)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)等(deng)(deng)等(deng)(deng)。限(xian)(xian)(xian)(xian)(xian)位(wei)(wei)(wei)(wei)開(kai)(kai)(kai)(kai)(kai)(kai)(kai)(kai)關(guan)(guan)(guan)(guan)(guan)可(ke)(ke)(ke)以(yi)分為接(jie)(jie)觸式(shi)(shi)(shi)和(he)(he)(he)(he)非接(jie)(jie)觸式(shi)(shi)(shi)兩種(zhong)(zhong)，它(ta)是(shi)一(yi)(yi)種(zhong)(zhong)可(ke)(ke)(ke)以(yi)用(yong)(yong)(yong)(yong)來限(xian)(xian)(xian)(xian)(xian)定機(ji)(ji)(ji)(ji)械(xie)設備的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)運(yun)(yun)(yun)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)極限(xian)(xian)(xian)(xian)(xian)位(wei)(wei)(wei)(wei)置(zhi)(zhi)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)電(dian)(dian)器(qi)(qi)開(kai)(kai)(kai)(kai)(kai)(kai)(kai)(kai)關(guan)(guan)(guan)(guan)(guan)。限(xian)(xian)(xian)(xian)(xian)位(wei)(wei)(wei)(wei)開(kai)(kai)(kai)(kai)(kai)(kai)(kai)(kai)關(guan)(guan)(guan)(guan)(guan)更加(jia)(jia)直(zhi)觀，它(ta)對(dui)機(ji)(ji)(ji)(ji)械(xie)有(you)一(yi)(yi)定的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)限(xian)(xian)(xian)(xian)(xian)制(zhi)作(zuo)(zuo)(zuo)用(yong)(yong)(yong)(yong)，可(ke)(ke)(ke)以(yi)用(yong)(yong)(yong)(yong)來保護開(kai)(kai)(kai)(kai)(kai)(kai)(kai)(kai)關(guan)(guan)(guan)(guan)(guan)不受損壞(huai)。非接(jie)(jie)觸式(shi)(shi)(shi)限(xian)(xian)(xian)(xian)(xian)位(wei)(wei)(wei)(wei)開(kai)(kai)(kai)(kai)(kai)(kai)(kai)(kai)關(guan)(guan)(guan)(guan)(guan)有(you)很(hen)多(duo)(duo)種(zhong)(zhong)，比(bi)如(ru)干簧管式(shi)(shi)(shi)、光電(dian)(dian)式(shi)(shi)(shi)、感應式(shi)(shi)(shi)等(deng)(deng)等(deng)(deng)。2、功能(neng)區(qu)(qu)別：行(xing)(xing)(xing)(xing)程開(kai)(kai)(kai)(kai)(kai)(kai)(kai)(kai)關(guan)(guan)(guan)(guan)(guan)可(ke)(ke)(ke)以(yi)安(an)裝在(zai)(zai)靜止(zhi)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)物(wu)體上(shang)面，比(bi)如(ru)門(men)(men)框或(huo)(huo)(huo)固定架等(deng)(deng)等(deng)(deng)。它(ta)也(ye)(ye)可(ke)(ke)(ke)以(yi)安(an)裝在(zai)(zai)運(yun)(yun)(yun)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)物(wu)體上(shang)面，比(bi)如(ru)平時(shi)生(sheng)活(huo)中使用(yong)(yong)(yong)(yong)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)門(men)(men)。當運(yun)(yun)(yun)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)物(wu)體接(jie)(jie)近靜止(zhi)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)物(wu)體時(shi)，開(kai)(kai)(kai)(kai)(kai)(kai)(kai)(kai)關(guan)(guan)(guan)(guan)(guan)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)接(jie)(jie)點(dian)會(hui)引起閉合(he)或(huo)(huo)(huo)斷開(kai)(kai)(kai)(kai)(kai)(kai)(kai)(kai)，從而(er)(er)控(kong)(kong)制(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)(dong)(dong)(dong)作(zuo)(zuo)(zuo)。而(er)(er)且行(xing)(xing)(xing)(xing)程開(kai)(kai)(kai)(kai)(kai)(kai)(kai)(kai)關(guan)(guan)(guan)(guan)(guan)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)靈敏度比(bi)較(jiao)高，體積也(ye)(ye)比(bi)較(jiao)小(xiao)(xiao)(xiao)，還具有(you)防(fang)腐蝕性和(he)(he)(he)(he)耐用(yong)(yong)(yong)(yong)性等(deng)(deng)諸多(duo)(duo)特點(dian)。最重要的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)是(shi)，行(xing)(xing)(xing)(xing)程開(kai)(kai)(kai)(kai)(kai)(kai)(kai)(kai)關(guan)(guan)(guan)(guan)(guan)即便是(shi)在(zai)(zai)水里，也(ye)(ye)能(neng)正常(chang)(chang)工(gong)作(zuo)(zuo)(zuo)。不僅價(jia)格實(shi)惠，而(er)(er)且使用(yong)(yong)(yong)(yong)壽(shou)命長。限(xian)(xian)(xian)(xian)(xian)位(wei)(wei)(wei)(wei)開(kai)(kai)(kai)(kai)(kai)(kai)(kai)(kai)關(guan)(guan)(guan)(guan)(guan)分為極限(xian)(xian)(xian)(xian)(xian)限(xian)(xian)(xian)(xian)(xian)位(wei)(wei)(wei)(wei)開(kai)(kai)(kai)(kai)(kai)(kai)(kai)(kai)關(guan)(guan)(guan)(guan)(guan)和(he)(he)(he)(he)工(gong)作(zuo)(zuo)(zuo)限(xian)(xian)(xian)(xian)(xian)位(wei)(wei)(wei)(wei)開(kai)(kai)(kai)(kai)(kai)(kai)(kai)(kai)關(guan)(guan)(guan)(guan)(guan)。工(gong)作(zuo)(zuo)(zuo)限(xian)(xian)(xian)(xian)(xian)位(wei)(wei)(wei)(wei)開(kai)(kai)(kai)(kai)(kai)(kai)(kai)(kai)關(guan)(guan)(guan)(guan)(guan)可(ke)(ke)(ke)以(yi)用(yong)(yong)(yong)(yong)來給(gei)出(chu)機(ji)(ji)(ji)(ji)構動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)作(zuo)(zuo)(zuo)到(dao)位(wei)(wei)(wei)(wei)信號(hao)，一(yi)(yi)般(ban)安(an)裝在(zai)(zai)機(ji)(ji)(ji)(ji)構需要改變工(gong)況的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)位(wei)(wei)(wei)(wei)置(zhi)(zhi)上(shang)，在(zai)(zai)開(kai)(kai)(kai)(kai)(kai)(kai)(kai)(kai)關(guan)(guan)(guan)(guan)(guan)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)作(zuo)(zuo)(zuo)發(fa)出(chu)后(hou)給(gei)出(chu)信號(hao)，然后(hou)再(zai)進行(xing)(xing)(xing)(xing)別的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)作(zuo)(zuo)(zuo)。極限(xian)(xian)(xian)(xian)(xian)限(xian)(xian)(xian)(xian)(xian)位(wei)(wei)(wei)(wei)開(kai)(kai)(kai)(kai)(kai)(kai)(kai)(kai)關(guan)(guan)(guan)(guan)(guan)可(ke)(ke)(ke)以(yi)防(fang)止(zhi)機(ji)(ji)(ji)(ji)構動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)作(zuo)(zuo)(zuo)超出(chu)設計范圍，發(fa)生(sheng)意外事故(gu)。一(yi)(yi)般(ban)安(an)裝在(zai)(zai)器(qi)(qi)械(xie)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)作(zuo)(zuo)(zuo)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)最遠處，用(yong)(yong)(yong)(yong)來防(fang)止(zhi)器(qi)(qi)械(xie)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)作(zuo)(zuo)(zuo)過大，出(chu)現(xian)(xian)器(qi)(qi)械(xie)損壞(huai)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)情況。3、用(yong)(yong)(yong)(yong)途區(qu)(qu)別：行(xing)(xing)(xing)(xing)程開(kai)(kai)(kai)(kai)(kai)(kai)(kai)(kai)關(guan)(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)較(jiao)廣泛。最典型的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)是(shi)在(zai)(zai)冰(bing)(bing)箱(xiang)方(fang)面的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)使用(yong)(yong)(yong)(yong)，在(zai)(zai)打開(kai)(kai)(kai)(kai)(kai)(kai)(kai)(kai)冰(bing)(bing)箱(xiang)門(men)(men)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)時(shi)候(hou)，冰(bing)(bing)箱(xiang)里面的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)燈就會(hui)自(zi)(zi)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)亮起，當關(guan)(guan)(guan)(guan)(guan)上(shang)冰(bing)(bing)箱(xiang)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)門(men)(men)后(hou)，冰(bing)(bing)箱(xiang)里面的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)燈就會(hui)自(zi)(zi)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)熄滅(mie)。不但方(fang)便了人們的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)日常(chang)(chang)生(sheng)活(huo)，而(er)(er)且也(ye)(ye)更加(jia)(jia)節約能(neng)源，減(jian)少資源浪費。除了在(zai)(zai)冰(bing)(bing)箱(xiang)上(shang)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)運(yun)(yun)(yun)用(yong)(yong)(yong)(yong)，日常(chang)(chang)使用(yong)(yong)(yong)(yong)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)洗(xi)衣(yi)機(ji)(ji)(ji)(ji)也(ye)(ye)運(yun)(yun)(yun)用(yong)(yong)(yong)(yong)了行(xing)(xing)(xing)(xing)程開(kai)(kai)(kai)(kai)(kai)(kai)(kai)(kai)關(guan)(guan)(guan)(guan)(guan)，特別是(shi)在(zai)(zai)洗(xi)衣(yi)機(ji)(ji)(ji)(ji)脫水的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)時(shi)候(hou)，脫水桶(tong)會(hui)高速(su)運(yun)(yun)(yun)轉(zhuan)，有(you)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)老人或(huo)(huo)(huo)小(xiao)(xiao)(xiao)孩兒安(an)全意識較(jiao)差。可(ke)(ke)(ke)能(neng)會(hui)在(zai)(zai)洗(xi)衣(yi)機(ji)(ji)(ji)(ji)脫水的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)時(shi)候(hou)，打開(kai)(kai)(kai)(kai)(kai)(kai)(kai)(kai)洗(xi)衣(yi)機(ji)(ji)(ji)(ji)蓋，這本(ben)身(shen)是(shi)非常(chang)(chang)危險的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)行(xing)(xing)(xing)(xing)為。但應用(yong)(yong)(yong)(yong)了行(xing)(xing)(xing)(xing)程開(kai)(kai)(kai)(kai)(kai)(kai)(kai)(kai)關(guan)(guan)(guan)(guan)(guan)后(hou)，就能(neng)很(hen)好的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)改善這種(zhong)(zhong)問(wen)題，從而(er)(er)保證了用(yong)(yong)(yong)(yong)戶(hu)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)安(an)全。行(xing)(xing)(xing)(xing)程開(kai)(kai)(kai)(kai)(kai)(kai)(kai)(kai)關(guan)(guan)(guan)(guan)(guan)在(zai)(zai)起重機(ji)(ji)(ji)(ji)械(xie)、電(dian)(dian)梯(ti)控(kong)(kong)制(zhi)電(dian)(dian)路(lu)等(deng)(deng)等(deng)(deng)許(xu)多(duo)(duo)領域也(ye)(ye)已(yi)經(jing)廣泛運(yun)(yun)(yun)用(yong)(yong)(yong)(yong)，發(fa)揮了它(ta)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)優勢(shi)。限(xian)(xian)(xian)(xian)(xian)位(wei)(wei)(wei)(wei)開(kai)(kai)(kai)(kai)(kai)(kai)(kai)(kai)關(guan)(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)(ye)很(hen)廣，不僅是(shi)在(zai)(zai)家用(yong)(yong)(yong)(yong)電(dian)(dian)器(qi)(qi)和(he)(he)(he)(he)工(gong)業控(kong)(kong)制(zhi)上(shang)等(deng)(deng)等(deng)(deng)。在(zai)(zai)電(dian)(dian)梯(ti)井(jing)道的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)最上(shang)方(fang)和(he)(he)(he)(he)最下方(fang)會(hui)安(an)裝限(xian)(xian)(xian)(xian)(xian)位(wei)(wei)(wei)(wei)開(kai)(kai)(kai)(kai)(kai)(kai)(kai)(kai)關(guan)(guan)(guan)(guan)(guan)，用(yong)(yong)(yong)(yong)來控(kong)(kong)制(zhi)電(dian)(dian)梯(ti)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)停(ting)止(zhi)和(he)(he)(he)(he)減(jian)速(su)。在(zai)(zai)錄(lu)像機(ji)(ji)(ji)(ji)和(he)(he)(he)(he)錄(lu)音機(ji)(ji)(ji)(ji)中，常(chang)(chang)常(chang)(chang)會(hui)用(yong)(yong)(yong)(yong)到(dao)倒退或(huo)(huo)(huo)者快(kuai)進，這時(shi)磁帶會(hui)快(kuai)速(su)地轉(zhuan)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)。但是(shi)到(dao)達磁帶端(duan)點(dian)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)時(shi)候(hou)，就會(hui)自(zi)(zi)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)停(ting)下來。