西門子伺服(fu)電機零點對位(2小時調好)
電(dian)(dian)(dian)(dian)(dian)(dian)機(ji)(ji)維修電(dian)(dian)(dian)(dian)(dian)(dian)機(ji)(ji)是(shi)一(yi)種(zhong)旋(xuan)(xuan)轉(zhuan)式電(dian)(dian)(dian)(dian)(dian)(dian)機(ji)(ji)器,它(ta)將電(dian)(dian)(dian)(dian)(dian)(dian)能轉(zhuan)變為機(ji)(ji)械能,它(ta)主要(yao)包括一(yi)個(ge)用(yong)以產生磁(ci)(ci)場的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)鐵繞組(zu)(zu)或(huo)分布的(de)(de)(de)定(ding)子繞組(zu)(zu)和一(yi)個(ge)旋(xuan)(xuan)轉(zhuan)電(dian)(dian)(dian)(dian)(dian)(dian)樞或(huo)轉(zhuan)子。在(zai)定(ding)子繞組(zu)(zu)旋(xuan)(xuan)轉(zhuan)磁(ci)(ci)場的(de)(de)(de)作用(yong)下,其(qi)在(zai)定(ding)子繞組(zu)(zu)有(you)效(xiao)邊中有(you)電(dian)(dian)(dian)(dian)(dian)(dian)流通(tong)(tong)過并(bing)受磁(ci)(ci)場的(de)(de)(de)作用(yong)而使(shi)其(qi)轉(zhuan)動(dong)。根據電(dian)(dian)(dian)(dian)(dian)(dian)機(ji)(ji)可(ke)逆性原則,如果電(dian)(dian)(dian)(dian)(dian)(dian)機(ji)(ji)在(zai)其(qi)結構上沒有(you)發生任何改變,電(dian)(dian)(dian)(dian)(dian)(dian)機(ji)(ji)即電(dian)(dian)(dian)(dian)(dian)(dian)機(ji)(ji)使(shi)用(yong),也(ye)可(ke)作發電(dian)(dian)(dian)(dian)(dian)(dian)機(ji)(ji)使(shi)用(yong)。它(ta)是(shi)將電(dian)(dian)(dian)(dian)(dian)(dian)能轉(zhuan)變為機(ji)(ji)械能的(de)(de)(de)一(yi)種(zhong)機(ji)(ji)器。通(tong)(tong)常電(dian)(dian)(dian)(dian)(dian)(dian)機(ji)(ji)的(de)(de)(de)作功(gong)部分作旋(xuan)(xuan)轉(zhuan)運(yun)動(dong),這(zhe)種(zhong)電(dian)(dian)(dian)(dian)(dian)(dian)機(ji)(ji)稱(cheng)為轉(zhuan)子電(dian)(dian)(dian)(dian)(dian)(dian)機(ji)(ji);也(ye)有(you)作直線運(yun)動(dong)的(de)(de)(de),稱(cheng)為直線電(dian)(dian)(dian)(dian)(dian)(dian)機(ji)(ji)。電(dian)(dian)(dian)(dian)(dian)(dian)機(ji)(ji)能提(ti)供(gong)的(de)(de)(de)功(gong)率(lv)范(fan)圍很(hen)大,從(cong)毫瓦級到千(qian)瓦級。機(ji)(ji)床(chuang)、水泵(beng),需要(yao)電(dian)(dian)(dian)(dian)(dian)(dian)機(ji)(ji)帶動(dong);電(dian)(dian)(dian)(dian)(dian)(dian)力(li)機(ji)(ji)車、電(dian)(dian)(dian)(dian)(dian)(dian)梯,需要(yao)電(dian)(dian)(dian)(dian)(dian)(dian)機(ji)(ji)牽引。
電機(ji)發(fa)動(dong)機(ji)溫(wen)度怕高不怕低:
有些人認為行車時(shi)發(fa)(fa)動機(ji)溫度怕(pa)高不怕(pa)低。其(qi)實,發(fa)(fa)動機(ji)溫度低時(shi)危害性也很大。應(ying)根據汽車使用說明書規定的正(zheng)常溫度行車,才能保證發(fa)(fa)動機(ji)的使用壽命。
2、水泵風(feng)扇(shan)皮(pi)帶越緊(jin)越好:
皮帶越緊并(bing)非越好(hao)。皮帶過緊不僅(jin)會使(shi)其拉長或斷裂,縮短皮帶的使(shi)用壽命,而(er)且還會因拉力過大,導致發(fa)電機軸、水泵軸變(bian)形(xing)彎曲(qu)和(he)軸承的早期(qi)損壞。汽車(che)發(fa)動機風扇皮帶的松緊度應符合技(ji)術要(yao)求(qiu),一般正常皮帶裝配時撓曲(qu)度為10-15mm為宜。
3、盲(mang)目拆(chai)掉(diao)發動機節(jie)溫器 :
如果(guo)因發(fa)動機(ji)(ji)溫(wen)(wen)度高而盲目(mu)拆除節溫(wen)(wen)器,冷(leng)(leng)(leng)卻液(ye)只(zhi)能進行大循環,不(bu)(bu)能調(diao)節冷(leng)(leng)(leng)卻強度,難以保(bao)證發(fa)動機(ji)(ji)在較(jiao)適宜的溫(wen)(wen)度下(xia)工作(zuo),反而使發(fa)動機(ji)(ji)經常處于低(di)溫(wen)(wen)狀(zhuang)態下(xia)工作(zuo),造成發(fa)動機(ji)(ji)功率下(xia)降,磨損加快,油耗(hao)增加。如果(guo)發(fa)動機(ji)(ji)節溫(wen)(wen)器發(fa)生故障檢修或更換之(zhi)后,發(fa)動機(ji)(ji)溫(wen)(wen)度還高,就應(ying)檢修冷(leng)(leng)(leng)卻系(xi)統的其他部位(wei),不(bu)(bu)能拆除節溫(wen)(wen)器。
4、電機(ji)用怠速升(sheng)溫(wen):
用怠速升溫時,由于轉(zhuan)速較(jiao)低,機(ji)(ji)油(you)(you)泵不能(neng)較(jiao)快地將潤(run)滑(hua)油(you)(you)壓入(ru)(ru)各 潤(run)滑(hua)表(biao)面,油(you)(you)壓也(ye)低,使發(fa)動(dong)機(ji)(ji)各運動(dong)機(ji)(ji)件在干(gan)(gan)摩(mo)擦或半干(gan)(gan)摩(mo)擦狀態(tai)下工作;燃(ran)油(you)(you)因低溫霧化不良,使未燃(ran)燒的(de)燃(ran)油(you)(you)竄入(ru)(ru)曲軸箱,沖(chong)刷掉缸壁上的(de)油(you)(you)膜(mo),也(ye)會加速機(ji)(ji)件的(de)磨損。所以(yi),發(fa)動(dong)機(ji)(ji)啟(qi)動(dong)數秒后,應用快怠速升溫,改(gai)善發(fa)動(dong)機(ji)(ji)的(de)潤(run)滑(hua)條件。
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