bob足彩

电机维修知识

大型电机维修标准资料2020-07-07

1、电(dian)(dian)(dian)(dian)(dian)动(dong)机(ji)(ji)通电(dian)(dian)(dian)(dian)(dian)后不(bu)启(qi)动(dong)该故障除(chu)了电(dian)(dian)(dian)(dian)(dian)源回路(lu)(lu)、电(dian)(dian)(dian)(dian)(dian)机(ji)(ji)绕(rao)组不(bu)良外,大多是电(dian)(dian)(dian)(dian)(dian)机(ji)(ji)的(de)启(qi)动(dong)电(dian)(dian)(dian)(dian)(dian)路(lu)(lu)异常(chang)。电(dian)(dian)(dian)(dian)(dian)扇、排(pai)风(feng)扇、洗衣机(ji)(ji)等(deng)电(dian)(dian)(dian)(dian)(dian)机(ji)(ji)一般(ban)采用(yong)电(dian)(dian)(dian)(dian)(dian)容(rong)器启(qi)动(dong)运转(zhuan);而电(dian)(dian)(dian)(dian)(dian)冰(bing)(bing)箱、冷柜等(deng)的(de)电(dian)(dian)(dian)(dian)(dian)机(ji)(ji)多采用(yong)电(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)分(fen)相启(qi)动(dong)运转(zhuan),一旦启(qi)动(dong)电(dian)(dian)(dian)(dian)(dian)路(lu)(lu)中的(de)电(dian)(dian)(dian)(dian)(dian)容(rong)器或(huo)分(fen)相电(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)损坏(huai),电(dian)(dian)(dian)(dian)(dian)机(ji)(ji)就不(bu)能(neng)正常(chang)运转(zhuan),检修(xiu)时应先排(pai)除(chu)启(qi)动(dong)电(dian)(dian)(dian)(dian)(dian)路(lu)(lu)故障后再查电(dian)(dian)(dian)(dian)(dian)机(ji)(ji)故障。若(ruo)启(qi)动(dong)电(dian)(dian)(dian)(dian)(dian)路(lu)(lu)正常(chang),则可(ke)能(neng)是电(dian)(dian)(dian)(dian)(dian)动(dong)机(ji)(ji)内部(bu)(bu)绕(rao)组局部(bu)(bu)短(duan)路(lu)(lu)或(huo)断路(lu)(lu),可(ke)用(yong)万(wan)用(yong)表R×1挡测各绕(rao)组电(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)值来判(pan)断。如电(dian)(dian)(dian)(dian)(dian)冰(bing)(bing)箱压缩(suo)机(ji)(ji)电(dian)(dian)(dian)(dian)(dian)机(ji)(ji),正常(chang)情(qing)...

异动电机维修注意要点2020-06-15

1、注意减少(shao)轴(zhou)(zhou)(zhou)承故(gu)障  电动机轴(zhou)(zhou)(zhou)承故(gu)障有:内套与套与端(duan)盖问发(fa)生相(xiang)对运动;径间(jian)、轴(zhou)(zhou)(zhou)问间(jian)隙超过允(yun)许值(zhi);滚珠(柱)严重磨损(sun)局(ju)部损(sun)坏、脱落,麻(ma)点(dian)甚至碎裂;轴(zhou)(zhou)(zhou)承架活动等(deng)。发(fa)现上述故(gu)障之一,都要(yao)认真修理,直到更(geng)换(huan)(huan)合(he)格(ge)(ge)的(de)(de)新轴(zhou)(zhou)(zhou)承。2、更(geng)换(huan)(huan)润滑(hua)油(脂)  检修时,要(yao)将轴(zhou)(zhou)(zhou)承的(de)(de)润滑(hua)油(脂)全部清除掉。用汽(qi)油(或(huo)清洗剂(ji))洗净,用干净的(de)(de)白布(bu)擦(ca)干,根据电动机的(de)(de)转速度(du)和用途,换(huan)(huan)上相(xiang)应的(de)(de)、合(he)格(ge)(ge)的(de)(de)润滑(hua)油(脂)。3、更(geng)换(huan)(huan)损(sun)坏的(de)(de)风(feng)叶(ye)  风(feng)叶(ye)是(shi)电机自...

大型电机轴承座清洗、检查2020-06-02

1、轴瓦的清洗(xi)(xi)与(yu)检(jian)查 大型电机轴承(cheng)均单独装(zhuang)箱运来,开箱后先(xian)用(yong)(yong)吊环(huan)螺丝将(jiang)(jiang)上瓦和(he)下瓦分别取出(chu)(chu)作好记号并(bing)用(yong)(yong)煤油清洗(xi)(xi),用(yong)(yong)干布(bu)擦干并(bing)检(jian)查所有槽沟是否干净(jing)(jing),有无铸造残(can)留砂子,钨金层与(yu)瓦体结合不(bu)好,划出(chu)(chu)的沟道、裂纹(wen)存(cun)在砂眼(yan)和(he)其它(ta)掺杂(za)物等)。若(ruo)无法修(xiu)复时(shi),则要重新挂钨金。2、轴承(cheng)座的清洗(xi)(xi)与(yu)检(jian)查 轴承(cheng)座安装(zhuang)引前,也应进全(quan)面清洗(xi)(xi)检(jian)查。将(jiang)(jiang)轴承(cheng)座内腔(qiang)用(yong)(yong)刮刀将(jiang)(jiang)脏物刮去,用(yong)(yong)布(bu)蘸(zhan)汽油或溶剂(ji)将(jiang)(jiang)脏物擦净(jing)(jing),观看有无裂纹(wen)及(ji)砂眼(yan),以防止在...

直流电机电刷失效机理分析2020-04-25

随着智(zhi)能家居的(de)(de)兴起与发展,以自(zi)动感知、智(zhi)能控(kong)制、自(zi)动执行(xing)为(wei)特(te)征的(de)(de)智(zhi)能家电(dian)(dian)成为(wei)行(xing)业发展的(de)(de)趋(qu)势,而直(zhi)流电(dian)(dian)机(ji)作为(wei)最(zui)重要的(de)(de)自(zi)动控(kong)制执行(xing)器(qi)之一,开始在(zai)(zai)智(zhi)能家电(dian)(dian)和(he)智(zhi)能厨电(dian)(dian)中被广泛使用。然而,厨电(dian)(dian)中使用的(de)(de)直(zhi)流电(dian)(dian)机(ji),长期工作在(zai)(zai)高温、潮湿、多盐等腐蚀性物质的(de)(de)环境(jing)中,再加上(shang)其频繁启停(ting),直(zhi)流电(dian)(dian)机(ji)故障(zhang)频发,成为(wei)困扰智(zhi)能家电(dian)(dian)生产厂商(shang)和(he)用户的(de)(de)一大难(nan)题。直(zhi)流电(dian)(dian)机(ji)结构相(xiang)对简单,主要由磁瓦、换(huan)向器(qi)、电(dian)(dian)刷、绕组、刷架(jia)、轴承(cheng)等零部件(jian)组...

直流减速电机扭矩计算方法2020-04-02

直(zhi)流减(jian)(jian)速(su)(su)(su)电机(ji)的(de)使用(yong)变(bian)得(de)很(hen)普遍(bian),并(bing)且这种设(she)备的(de)使用(yong)效(xiao)果良好,受到很(hen)多(duo)厂家的(de)青睐,关于这种设(she)备的(de)知识点,大家了解的(de)如(ru)(ru)何呢,下(xia)面这篇文章为大家详细讲解,大家一(yi)起来了解一(yi)下(xia)吧。  直(zhi)流减(jian)(jian)速(su)(su)(su)电机(ji)扭(niu)矩(ju)的(de)计算方法:1、知道(dao)直(zhi)流减(jian)(jian)速(su)(su)(su)电机(ji)的(de)功率(lv)和(he)速(su)(su)(su)比(bi)及使用(yong)系(xi)数(shu)(shu),求减(jian)(jian)速(su)(su)(su)机(ji)扭(niu)矩(ju)如(ru)(ru)下(xia)公(gong)式(shi):  减(jian)(jian)速(su)(su)(su)机(ji)扭(niu)矩(ju)=9550×电机(ji)功率(lv)÷电机(ji)功率(lv)输入转数(shu)(shu)×速(su)(su)(su)比(bi)×使用(yong)系(xi)数(shu)(shu)。2、知道(dao)扭(niu)矩(ju)和(he)减(jian)(jian)速(su)(su)(su)机(ji)输出转数(shu)(shu)及使用(yong)系(xi)数(shu)(shu),求直(zhi)流电动机(ji)所(suo)需配电机(ji)功率(lv)如(ru)(ru)下(xia)公(gong)...

电机进水受潮维修方法2020-03-05

春(chun)天(tian)天(tian)气(qi)比较(jiao)潮湿(shi),生产现(xian)(xian)场(chang)中,由于电机(ji)(ji)(ji)选型原因及(ji)(ji)(ji)保管、维护(hu)不当(dang)、环境(jing)等因素致使潮气(qi)进(jin)(jin)入电动(dong)(dong)机(ji)(ji)(ji)内部形成凝露或电动(dong)(dong)机(ji)(ji)(ji)直(zhi)接进(jin)(jin)水,导致电动(dong)(dong)机(ji)(ji)(ji)绝缘电阻(zu)下(xia)(xia)降,影(ying)响电动(dong)(dong)机(ji)(ji)(ji)的(de)(de)(de)正常使用(yong)(yong)及(ji)(ji)(ji)运行(xing)安全。本文(wen)主要针对现(xian)(xian)场(chang)受(shou)潮的(de)(de)(de)鼠笼型电机(ji)(ji)(ji)在不同状况下(xia)(xia)干(gan)燥处理的(de)(de)(de)方法进(jin)(jin)行(xing)分(fen)析(xi)介绍,重点介绍电流干(gan)燥法及(ji)(ji)(ji)铁损干(gan)燥法的(de)(de)(de)原理及(ji)(ji)(ji)现(xian)(xian)场(chang)应用(yong)(yong)方法。小(xiao)容量异(yi)步电动(dong)(dong)机(ji)(ji)(ji)受(shou)潮干(gan)燥方法:小(xiao)容量异(yi)步电动(dong)(dong)机(ji)(ji)(ji)拆(chai)卸、解(jie)体(ti)较(jiao)为(wei)方便,可(ke)根据现(xian)(xian)场(chang)环境(jing)就地进(jin)(jin)行(xing)干(gan)燥处理或拆(chai)...

永磁直流电机运行过程震动原因2020-02-17

永(yong)磁(ci)直(zhi)流(liu)(liu)电(dian)机(ji)(ji)运行(xing)(xing)过程(cheng)震动原因:第(di)(di)一、否三相电(dian)压(ya)平(ping)衡(heng)第(di)(di)一张支票,并拧紧地(di)脚螺栓,基础松(song)动检查(不会被地(di)面松(song)动,啊)功率测试,如果无(wu)效(xiao),下(xia)一步。第(di)(di)二(er)、释放负(fu)荷(皮(pi)带(dai),齿轮等),永(yong)磁(ci)直(zhi)流(liu)(liu)电(dian)机(ji)(ji) 微型减速电(dian)机(ji)(ji) 永(yong)磁(ci)永(yong)磁(ci)直(zhi)流(liu)(liu)电(dian)机(ji)(ji) 永(yong)磁(ci)直(zhi)流(liu)(liu)电(dian)机(ji)(ji)调(diao)速器(qi) 微电(dian)机(ji)(ji)电(dian)源测试,以确定它是(shi)否是(shi)由不平(ping)衡(heng)负(fu)载,如果是(shi)这样,调(diao)整(zheng)负(fu)荷,与DC电(dian)机(ji)(ji)轴平(ping)行(xing)(xing)的(de)纵向以便。如果无(wu)效(xiao),下(xia)一步。第(di)(di)三、永(yong)磁(ci)直(zhi)流(liu)(liu)电(dian)机(ji)(ji)维修师检查螺丝盖的(de)密封性(xing),是(shi)按(an)对角顺(shun)序系带(dai)...

高速电机在不同行业的应用前景2019-12-25

高(gao)速(su)(su)电(dian)机(ji)(ji)(ji)在以下各(ge)方面具有广阔的(de)(de)(de)(de)应(ying)用(yong)(yong)(yong)前(qian)景:1、高(gao)速(su)(su)电(dian)机(ji)(ji)(ji)在空(kong)调或冰箱的(de)(de)(de)(de)离心式压缩机(ji)(ji)(ji)等各(ge)种场合(he)得到应(ying)用(yong)(yong)(yong),而随着科学技术(shu)的(de)(de)(de)(de)发(fa)展,特(te)殊要求越(yue)来越(yue)多,它的(de)(de)(de)(de)应(ying)用(yong)(yong)(yong)也会(hui)越(yue)来越(yue)广泛。2、随着汽(qi)车工业(ye)混合(he)动(dong)力(li)(li)汽(qi)车的(de)(de)(de)(de)发(fa)展,体积(ji)小,重(zhong)量轻的(de)(de)(de)(de)高(gao)速(su)(su)发(fa)电(dian)机(ji)(ji)(ji)将(jiang)会(hui)得到充分的(de)(de)(de)(de)重(zhong)视,并在混合(he)动(dong)力(li)(li)汽(qi)车,航空(kong),船舶等领域具有良(liang)好(hao)的(de)(de)(de)(de)应(ying)用(yong)(yong)(yong)前(qian)景。3、由(you)燃气轮机(ji)(ji)(ji)驱(qu)动(dong)的(de)(de)(de)(de)高(gao)速(su)(su)发(fa)电(dian)机(ji)(ji)(ji)体积(ji)小,具有较高(gao)的(de)(de)(de)(de)机(ji)(ji)(ji)动(dong)性,可(ke)用(yong)(yong)(yong)于一(yi)些重(zhong)要设(she)施的(de)(de)(de)(de)备(bei)用(yong)(yong)(yong)电(dian)源(yuan),也可(ke)作(zuo)为(wei)独立电(dian)源(yuan)或小...

高速电机维修方法2019-12-25

高(gao)速(su)电(dian)(dian)机(ji)(ji)维修(xiu)(xiu)(xiu)方法(fa):  对于高(gao)速(su)电(dian)(dian)机(ji)(ji),用维修(xiu)(xiu)(xiu)普通电(dian)(dian)机(ji)(ji)的一(yi)般方法(fa)维修(xiu)(xiu)(xiu),未必(bi)能(neng)修(xiu)(xiu)(xiu)好(hao),修(xiu)(xiu)(xiu)好(hao)后(hou),未必(bi)能(neng)长时间使用。根据国(guo)内外实践经(jing)验。介绍(shao)一(yi)下(xia)转速(su)为20000RPM 高(gao)速(su)电(dian)(dian)机(ji)(ji)与(yu)一(yi)般低速(su)电(dian)(dian)机(ji)(ji)不(bu)同的维修(xiu)(xiu)(xiu)方法(fa)。1、拆卸电(dian)(dian)枢(shu):  观察(cha)电(dian)(dian)机(ji)(ji)运(yun)转时碳(tan)刷与(yu)换向器(qi)之间是(shi)(shi)否产生火(huo)(huo)(huo)花(hua)(hua),出现火(huo)(huo)(huo)花(hua)(hua)的程度。(1)是(shi)(shi)无任(ren)何(he)火(huo)(huo)(huo)花(hua)(hua)。说(shuo)明碳(tan)刷与(yu)换向器(qi)都(dou)正(zheng)常,无需(xu)修(xiu)(xiu)(xiu)理。(2)只是(shi)(shi)有2~4个(ge)极小火(huo)(huo)(huo)花(hua)(hua)。这时仔细观察(cha)换向器(qi)表面(mian)若是(shi)(shi)平整(zheng)的。大多(duo)数情况可不(bu)必(bi)修(xiu)(xiu)(xiu)理。...

直流电机维修改变转速方法2019-12-17

直流电(dian)(dian)(dian)(dian)(dian)机维修在(zai)逐步加(jia)快(kuai)推进以国内市(shi)场为(wei)主,向国内、国际(ji)同步发展的(de)(de)(de)转(zhuan)型,加(jia)快(kuai)推进由制造商(shang)向成(cheng)套供(gong)货商(shang)、系统服务(wu)商(shang)转(zhuan)型。必需要不(bu)停地学习,伺(si)服电(dian)(dian)(dian)(dian)(dian)机的(de)(de)(de)维修中。用一个(ge)个(ge)方(fang)法(fa)去(qu)总结。伺(si)服电(dian)(dian)(dian)(dian)(dian)机维修为(wei)大家(jia)简析怎样去(qu)改变直流电(dian)(dian)(dian)(dian)(dian)机的(de)(de)(de)转(zhuan)速(su)。直流电(dian)(dian)(dian)(dian)(dian)机转(zhuan)速(su)的(de)(de)(de)控制方(fang)法(fa)调节电(dian)(dian)(dian)(dian)(dian)枢电(dian)(dian)(dian)(dian)(dian)压(ya)。改变电(dian)(dian)(dian)(dian)(dian)枢电(dian)(dian)(dian)(dian)(dian)压(ya)从而改变转(zhuan)速(su),属恒转(zhuan)矩(ju)调速(su)方(fang)法(fa),动(dong)态响应快(kuai),适用于要求大范围(wei)无级平(ping)滑调速(su)的(de)(de)(de)系统。使电(dian)(dian)(dian)(dian)(dian)动(dong)机从额定(ding)转(zhuan)速(su)向上变速(su),改变电(dian)(dian)(dian)(dian)(dian)机主磁通中只能减弱...

防爆电机维修技术要点2019-12-07

目(mu)前(qian)防爆(bao)(bao)电(dian)(dian)机(ji)(ji)(ji)(ji)种(zhong)类较多,不同的(de)(de)危险区域(yu)使用不同类型的(de)(de)防爆(bao)(bao)电(dian)(dian)机(ji)(ji)(ji)(ji)。如果这些电(dian)(dian)机(ji)(ji)(ji)(ji)出现(xian)故障,使用部门为(wei)了(le)保证安全和使用性(xing)能(neng),就需(xu)要返回厂家(jia)或(huo)进入大修(xiu)(xiu)(xiu)厂进行(xing)修(xiu)(xiu)(xiu)理,修(xiu)(xiu)(xiu)理工作要严格按照GB 3836.13的(de)(de)要求(qiu)进行(xing)。下面山(shan)东子昂(ang)电(dian)(dian)机(ji)(ji)(ji)(ji)维修(xiu)(xiu)(xiu)就防爆(bao)(bao)电(dian)(dian)机(ji)(ji)(ji)(ji)修(xiu)(xiu)(xiu)理过程中的(de)(de)技术要点简要介(jie)绍,记(ji)(ji)录(lu)(lu)原始(shi)数(shu)据(ju)(ju)的(de)(de)要求(qiu)在修(xiu)(xiu)(xiu)理电(dian)(dian)动机(ji)(ji)(ji)(ji)之前(qian),应尽可能(neng)将电(dian)(dian)动机(ji)(ji)(ji)(ji)的(de)(de)一(yi)切可以记(ji)(ji)录(lu)(lu)的(de)(de)数(shu)据(ju)(ju)都记(ji)(ji)录(lu)(lu)下来(lai):1、铭牌数(shu)据(ju)(ju):电(dian)(dian)动机(ji)(ji)(ji)(ji)型号、额定功(gong)率、额定电(dian)(dian)压、额定电(dian)(dian)流、负载持续率、额...

电机频繁跳闸的几种原因2019-11-19

一、电(dian)机频繁跳闸的(de)几种原因如下(xia):1、电(dian)机空(kong)气开关,过电(dian)流保护器(qi)(qi)容量不符或老(lao)(lao)化。2、电(dian)机的(de)出线电(dian)缆(lan)破皮(pi)。3、电(dian)机的(de)磁回路性能下(xia)降,造成电(dian)流过大。4、轴承损(sun)坏或者缺油卡(ka)涩(se),产生过负荷跳闸。5、电(dian)机电(dian)源(yuan)有问题或者是断路器(qi)(qi)老(lao)(lao)化。为了(le)保证电(dian)机正(zheng)常(chang)工作,除(chu)按(an)操作规程正(zheng)确使用(yong)电(dian)动机,运(yun)行(xing)过程中注意正(zheng)常(chang)监视外,还应对电(dian)动机进(jin)行(xing)定期检查(cha)维护,其主要内容有:(1)清(qing)擦(ca)电(dian)机外部(bu),及时除(chu)去(qu)机座外部(bu)的(de)灰尘、油泥(ni)、检查(cha)、清(qing)擦(ca)电(dian)动机接...

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