一、換向器怎么測量好壞
換向器,亦稱“整流子”。直流電機和交流換向器電動機電樞上的一個重要部件。那么換向器怎么測量好壞呢?
1、換向器片間電阻測量
測(ce)量換向器片(pian)間電(dian)(dian)阻,能發現電(dian)(dian)樞繞(rao)組(zu)是(shi)(shi)否斷線、開焊(han)和(he)匝間短路,升高片(pian)是(shi)(shi)否斷裂以及是(shi)(shi)否存在換向器片(pian)間短路,片(pian)間電(dian)(dian)阻檢查通常采用降壓法,也可采用專用片(pian)間電(dian)(dian)阻測(ce)量儀。
2、換向器擺渡測量
當換向(xiang)器變形或偏心時,在運行時將(jiang)會使電(dian)刷跳動,滑(hua)動接(jie)觸都不理(li)想,超過一定(ding)數值后(hou),將(jiang)導致換向(xiang)器惡(e)化。高(gao)速(su)電(dian)機和多種路電(dian)樞繞組電(dian)機更為敏(min)感。
二、換向器磨損到什么程度不能用
換(huan)向器(qi)在使用(yong)過程(cheng)(cheng)中,磨(mo)損(sun)是避(bi)免(mian)不了的(de),那么換(huan)向器(qi)磨(mo)損(sun)到什么程(cheng)(cheng)度(du)不能(neng)用(yong)呢?
換向器(qi)磨損(sun)到相(xiang)距引線(xian)4~5mm時(shi)不能用,換向器(qi)表面深(shen)度大于(yu)(yu)0.5mm時(shi)應(ying)更(geng)換。對(dui)于(yu)(yu)正常用到的(de)電(dian)(dian)(dian)機(ji),不管其磨損(sun)程度如(ru)何(he),均應(ying)定期(一般(ban)兩(liang)年)更(geng)換電(dian)(dian)(dian)刷(shua)和(he)換向器(qi)。無(wu)(wu)論是(shi)有刷(shua)電(dian)(dian)(dian)動車(che)電(dian)(dian)(dian)機(ji)還是(shi)無(wu)(wu)刷(shua)電(dian)(dian)(dian)動車(che)電(dian)(dian)(dian)機(ji),其輸入電(dian)(dian)(dian)流過大都市影響使(shi)用性能。
電機的電(dian)壓是通過控(kong)(kong)制(zhi)器(qi)供給的。控(kong)(kong)制(zhi)器(qi)內的電(dian)子組(zu)件(jian)老化會導致輸入(ru)電(dian)機的電(dian)流變大(da)。因此須要(yao)對控(kong)(kong)制(zhi)器(qi)展開檢查,必要(yao)時(shi)更(geng)換(huan)控(kong)(kong)制(zhi)器(qi)。定期對電(dian)動車電(dian)機齒輪(lun)、滾珠(zhu)軸承以及減速零(ling)部件(jian)展開潤滑,若(ruo)齒輪(lun)及滾珠(zhu)軸承內外套(tao)磨損過大(da)、防(fang)振片變形、彈簧性能下滑或折(zhe)斷均應(ying)更(geng)換(huan)控(kong)(kong)制(zhi)器(qi)。