你(ni)知道電動(dong)機(ji)對一(yi)個機(ji)械(xie)來說有(you)多重要嗎?
電(dian)(dian)動(dong)(dong)(dong)機(ji)(ji)簡稱馬(ma)達,電(dian)(dian)動(dong)(dong)(dong)機(ji)(ji)是將電(dian)(dian)能(neng)轉(zhuan)(zhuan)換成機(ji)(ji)械(xie)(xie)能(neng),以實現(xian)各種用(yong)途的(de)(de)生產機(ji)(ji)械(xie)(xie)。是一(yi)個機(ji)(ji)械(xie)(xie)的(de)(de)主體核心,是帶動(dong)(dong)(dong)整個機(ji)(ji)械(xie)(xie)運轉(zhuan)(zhuan)的(de)(de)設備。電(dian)(dian)動(dong)(dong)(dong)機(ji)(ji)是根據(通電(dian)(dian)導體在(zai)磁(ci)場中(zhong)受力(li))的(de)(de)原(yuan)(yuan)理(li)(li)制成的(de)(de)。主要由兩部(bu)分(fen)組成,能(neng)夠轉(zhuan)(zhuan)動(dong)(dong)(dong)的(de)(de)線(xian)圈和固定(ding)不動(dong)(dong)(dong)的(de)(de)磁(ci)體。在(zai)電(dian)(dian)動(dong)(dong)(dong)機(ji)(ji)里(li),能(neng)夠轉(zhuan)(zhuan)動(dong)(dong)(dong)的(de)(de)部(bu)分(fen)叫(jiao)轉(zhuan)(zhuan)子,固定(ding)不動(dong)(dong)(dong)的(de)(de)部(bu)分(fen)叫(jiao)定(ding)子,是利用(yong)通電(dian)(dian)線(xian)圈在(zai)磁(ci)場中(zhong)受力(li)而(er)轉(zhuan)(zhuan)動(dong)(dong)(dong)的(de)(de)原(yuan)(yuan)理(li)(li)。
電(dian)動(dong)(dong)機(ji)的(de)用途比較多,一(yi)般(ban)機(ji)械(xie),家電(dian)都安裝有。像紡(fang)織(zhi),冶金(jin),航空航天(tian),機(ji)械(xie)制(zhi)造(zao),化工等(deng)都離(li)不開電(dian)動(dong)(dong)機(ji)。現(xian)工廠里的(de)動(dong)(dong)力大多數都是用電(dian)動(dong)(dong)機(ji)帶動(dong)(dong)的(de).日常生(sheng)活中的(de)水(shui)泵,電(dian)風扇(shan),汽(qi)車(che)的(de)起動(dong)(dong),電(dian)動(dong)(dong)車(che),建筑用的(de)搞拌(ban)機(ji),起重機(ji)等(deng)等(deng)都需用到電(dian)動(dong)(dong)機(ji)。從小到電(dian)動(dong)(dong)牙刷,電(dian)吹風,到大到電(dian)力機(ji)車(che)人們的(de)生(sheng)活水(shui)平都離(li)不開電(dian)動(dong)(dong)機(ji)。
電(dian)動(dong)機(ji)是機(ji)械類的設備,在運行(xing)過程中由于(yu)摩擦、振動(dong)、絕緣老(lao)化等原因(yin),難(nan)免(mian)發(fa)生(sheng)故(gu)(gu)障(zhang)。這些故(gu)(gu)障(zhang)若及時(shi)檢查(cha)、發(fa)現和排除,能有效地防止事(shi)故(gu)(gu)的發(fa)生(sheng)。
常見故障的(de)原因
1.電動機沒有啟(qi)動力矩,或空載時不能啟(qi)動,并發出不正常聲(sheng)音。
原因:(l)三(san)相(xiang)電(dian)源(yuan)電(dian)路(包(bao)括閘刀開(kai)關、引線定子繞組)有一相(xiang)斷電(dian),造成單相(xiang)啟動(dong)。
(2)電源電壓過低。
(3)軸(zhou)承過度(du)磨損,使轉子靠近(jin)定子的一(yi)側,造成(cheng)定子與轉子不同心(xin),氣(qi)隙不均(jun)勻。
2.電動(dong)機(ji)啟(qi)動(dong)力矩小,有(you)載時不能啟(qi)動(dong),負載增大(da)時電機(ji)停轉(zhuan),有(you)時發出強烈雜聲(sheng),局部發熱。
原因:電(dian)網電(dian)壓低(di),繞(rao)組有匝(za)間短路,轉子(zi)繞(rao)組中(zhong)有斷(duan)(duan)線(xian)或脫焊現象,啟動(dong)后一(yi)相斷(duan)(duan)線(xian)造成單(dan)相運行。
3.啟動(dong)電(dian)流大,而(er)(er)且(qie)不平(ping)衡(heng),聲響大,造(zao)成保護裝置動(dong)作而(er)(er)切斷電(dian)源。
原因:定(ding)子繞組(zu)接線方法可(ke)能不正確,繞組(zu)對地絕緣老化。
如(ru)電動機損(sun)壞等于一臺機械都無法運轉,等于一設備的(de)主干。好好維護(hu)你的(de)電動機,讓設備能持續運轉。