直(zhi)(zhi)线(xian)电(dian)(dian)机(ji)(ji)(ji)是一种将(jiang)电(dian)(dian)能直(zhi)(zhi)接(jie)转(zhuan)(zhuan)换(huan)成直(zhi)(zhi)线(xian)运动(dong)机(ji)(ji)(ji)械能,而不(bu)需(xu)要(yao)任何中间转(zhuan)(zhuan)换(huan)机(ji)(ji)(ji)构的(de)(de)传动(dong)装置(zhi)。它可以(yi)看成是一台旋转(zhuan)(zhuan)电(dian)(dian)机(ji)(ji)(ji)按(an)径向(xiang)剖开(kai),并展成平(ping)面而成。直(zhi)(zhi)线(xian)电(dian)(dian)机(ji)(ji)(ji)也称线(xian)性(xing)电(dian)(dian)机(ji)(ji)(ji)、线(xian)性(xing)马(ma)(ma)达(da)、直(zhi)(zhi)线(xian)马(ma)(ma)达(da)、推杆(gan)马(ma)(ma)达(da)。最(zui)常用(yong)的(de)(de)直(zhi)(zhi)线(xian)电(dian)(dian)机(ji)(ji)(ji)类型是平(ping)板(ban)式(shi)、U型槽式(shi)和管式(shi)。线(xian)圈(quan)的(de)(de)典型组成是三相,有霍尔元件实现无(wu)刷(shua)换(huan)相。关键问题原因 用(yong)于机(ji)(ji)(ji)床进给伺服系统的(de)(de)主要(yao)是交流直(zhi)(zhi)线(xian)电(dian)(dian)机(ji)(ji)(ji),又分为(wei)同步式(shi)和感应(ying)式(shi)两(liang)大类。随(sui)着稀土钕铁硼(NdFeB)永(yong)磁(ci)材(cai)料的(de)(de)出现...
单(dan)相(xiang)串励电(dian)(dian)机(ji)(ji)的故(gu)(gu)障与(yu)负载(zai)、维(wei)护及设(she)计制造质量等(deng)因素有关。由于单(dan)相(xiang)串励电(dian)(dian)机(ji)(ji)转速(su)高,这就从(cong)材料(liao)和工艺等(deng)方(fang)面给电(dian)(dian)机(ji)(ji)的维(wei)修带来(lai)一定(ding)(ding)困(kun)难。因此,单(dan)相(xiang)串励电(dian)(dian)机(ji)(ji)的维(wei)修,尽可能按原(yuan)设(she)计数据进(jin)行维(wei)修。单(dan)相(xiang)串励电(dian)(dian)机(ji)(ji)的常见故(gu)(gu)障、原(yuan)因及维(wei)修方(fang)法如(ru)下:一、电(dian)(dian)机(ji)(ji)温升过(guo)(guo)高 主(zhu)要原(yuan)因:A空载(zai)、过(guo)(guo)载(zai)或超时,B电(dian)(dian)枢绕(rao)组(zu)短路,C轴承严重缺油,D电(dian)(dian)枢与(yu)定(ding)(ding)子相(xiang)擦。 维(wei)修方(fang)法:A按使(shi)用(yong)说明书规定(ding)(ding)使(shi)用(yong),B修理(li)或更换绕(rao)组(zu),C添加润滑脂,D校(xiao)直转...
电(dian)(dian)机(ji)(ji)维修(xiu)的(de)(de)(de)成本比(bi)较高(gao),而(er)且即使(shi)电(dian)(dian)机(ji)(ji)修(xiu)理好(hao)之后(hou)(hou)我(wo)们(men)往(wang)往(wang)会感觉它(ta)(ta)的(de)(de)(de)性(xing)能不如(ru)刚(gang)买(mai)回来(lai)的(de)(de)(de)好(hao)用(yong)。那(nei)么,要想使(shi)电(dian)(dian)机(ji)(ji)维修(xiu)到位的(de)(de)(de)话就(jiu)必须(xu)先从整体上来(lai)了(le)解它(ta)(ta)出(chu)(chu)(chu)现(xian)(xian)(xian)的(de)(de)(de)故(gu)障原(yuan)因有哪几个方(fang)面?首(shou)先,电(dian)(dian)机(ji)(ji)本身(shen)的(de)(de)(de)原(yuan)因,每一个产品(pin)都(dou)是有一定(ding)使(shi)用(yong)寿命的(de)(de)(de),这是电(dian)(dian)机(ji)(ji)本身(shen)所决定(ding)的(de)(de)(de)。因为只要投入(ru)运行使(shi)用(yong)中的(de)(de)(de)话,就(jiu)必然(ran)存在磨损。如(ru)果是电(dian)(dian)机(ji)(ji)本身(shen)的(de)(de)(de)质量问题,那(nei)它(ta)(ta)在使(shi)用(yong)很短时(shi)间之后(hou)(hou)就(jiu)会出(chu)(chu)(chu)现(xian)(xian)(xian)状况,要避免这些(xie)问题的(de)(de)(de)出(chu)(chu)(chu)现(xian)(xian)(xian)就(jiu)要让其在出(chu)(chu)(chu)厂之前就(jiu)经过严格检(jian)查。...
电(dian)(dian)机在广泛(fan)的工(gong)业(ye)生产中,磨损现象不可避免(mian),而对(dui)于电(dian)(dian)机轴头来说,修(xiu)复(fu)的工(gong)艺(yi)(yi)多(duo)种多(duo)样,通常(chang)采用(yong)电(dian)(dian)刷镀、热喷涂(tu)、低温冷焊(han)、索雷碳纳米聚合物材料(liao)技术等(deng)(deng),可根(gen)据电(dian)(dian)机轴头的磨损尺寸和(he)(he)形式选用(yong),以下就具(ju)体特性来简单(dan)判(pan)断一下利弊。首先是传统的修(xiu)复(fu)工(gong)艺(yi)(yi),存在修(xiu)复(fu)尺寸、且热喷涂(tu)和(he)(he)低温焊(han)接(jie)工(gong)艺(yi)(yi)修(xiu)复(fu)后需要(yao)再机加工(gong)等(deng)(deng)因素,工(gong)期(qi)长,拆卸麻烦,成本也较高(gao),尤其是在面对(dui)一些(xie)突发紧急、设(she)备(bei)庞(pang)大(da)、拆卸复(fu)杂等(deng)(deng)设(she)备(bei)问题,这些(xie)工(gong)艺(yi)(yi)显(xian)然是心...
调(diao)速电(dian)(dian)机(ji)(ji)(ji)电(dian)(dian)气(qi)(qi)故障(zhang)维(wei)修:一、调(diao)速电(dian)(dian)机(ji)(ji)(ji)升速后机(ji)(ji)(ji)速又逐(zhu)渐(jian)下降以至停机(ji)(ji)(ji) 出现这(zhei)(zhei)种情(qing)况,需要观(guan)察调(diao)速电(dian)(dian)机(ji)(ji)(ji)电(dian)(dian)气(qi)(qi)柜(ju)(ju)里的(de)(de)电(dian)(dian)流(liu)表指针(zhen)的(de)(de)变化。如果其指示电(dian)(dian)流(liu)急(ji)剧(ju)增大,则主(zhu)电(dian)(dian)机(ji)(ji)(ji)的(de)(de)热(re)继电(dian)(dian)器等过(guo)(guo)载保(bao)(bao)护(hu)装置必(bi)然会产生保(bao)(bao)护(hu)动作,使(shi)主(zhu)电(dian)(dian)机(ji)(ji)(ji)断(duan)开三相电(dian)(dian)源而住手运(yun)转。这(zhei)(zhei)时需要认真检查主(zhu)电(dian)(dian)机(ji)(ji)(ji)回路的(de)(de)有关(guan)接(jie)线元件(jian)及主(zhu)电(dian)(dian)机(ji)(ji)(ji)的(de)(de)交(jiao)流(liu)接(jie)触(chu)器,调(diao)速电(dian)(dian)机(ji)(ji)(ji)电(dian)(dian)气(qi)(qi)柜(ju)(ju)里的(de)(de)所有热(re)继电(dian)(dian)器等过(guo)(guo)载保(bao)(bao)护(hu)装置的(de)(de)接(jie)线部位是(shi)否(fou)(fou)松动,接(jie)触(chu)是(shi)否(fou)(fou)不良而发(fa)热(re)。如果这(zhei)(zhei)些部位有标题(ti)题(ti)目...
直流(liu)电(dian)机(ji)滑(hua)(hua)动(dong)(dong)轴(zhou)(zhou)承(cheng)(cheng)(cheng)分为(wei)带(dai)(或(huo)不带(dai))衬油环(huan)润(run)滑(hua)(hua)的(de)整(zheng)体式(shi)滑(hua)(hua)动(dong)(dong)轴(zhou)(zhou)承(cheng)(cheng)(cheng)、套(tao)筒(tong)式(shi)滑(hua)(hua)动(dong)(dong)轴(zhou)(zhou)承(cheng)(cheng)(cheng)及带(dai)衬油环(huan)润(run)滑(hua)(hua)的(de)分解式(shi)滑(hua)(hua)动(dong)(dong)轴(zhou)(zhou)承(cheng)(cheng)(cheng)等。直流(liu)电(dian)机(ji)整(zheng)体式(shi)滑(hua)(hua)动(dong)(dong)轴(zhou)(zhou)承(cheng)(cheng)(cheng)一般用于小型电(dian)机(ji),分解式(shi)滑(hua)(hua)动(dong)(dong)轴(zhou)(zhou)承(cheng)(cheng)(cheng)则用于直流(liu)电(dian)机(ji)。滑(hua)(hua)动(dong)(dong)轴(zhou)(zhou)承(cheng)(cheng)(cheng)的(de)轴(zhou)(zhou)颈包在(zai)轴(zhou)(zhou)承(cheng)(cheng)(cheng)中(zhong)间作相(xiang)对(dui)滑(hua)(hua)动(dong)(dong),依靠轴(zhou)(zhou)承(cheng)(cheng)(cheng)中(zhong)的(de)润(run)滑(hua)(hua)油膜形成半(ban)液体、半(ban)干性摩擦(ca)。因此,在(zai)缺(que)润(run)滑(hua)(hua)脂的(de)情况下极易造成轴(zhou)(zhou)承(cheng)(cheng)(cheng)严重磨损,若不及时停(ting)车(che)修理会使轴(zhou)(zhou)承(cheng)(cheng)(cheng)温度升高而导致合金熔化,损伤轴(zhou)(zhou)颈或(huo)使电(dian)机(ji)定(ding)子(zi)、转子(zi)相(xiang)擦(ca)。拆(chai)卸滑(hua)(hua)动(dong)(dong)轴(zhou)(zhou)承(cheng)(cheng)(cheng)时,...
一般(ban)来(lai)说,需(xu)要增(zeng)(zeng)容的(de)直(zhi)流(liu)(liu)电机,大(da)多是(shi)在生(sheng)(sheng)产现场运行多年,或多或少进(jin)行修理,或存在某些(xie)缺陷的(de)直(zhi)流(liu)(liu)电机,而随着生(sheng)(sheng)产的(de)有序进(jin)行,产量大(da)幅度的(de)提(ti)高。直(zhi)流(liu)(liu)电机的(de)温(wen)升高,报警频繁(fan),导致(zhi)跳闸现象的(de)增(zeng)(zeng)加。这(zhei)对于企业生(sheng)(sheng)产是(shi)有一定(ding)(ding)影响的(de),因此电工之(zhi)家建(jian)议(yi)在一定(ding)(ding)条件(jian)下(xia),一定(ding)(ding)范围内,可以通过(guo)原直(zhi)流(liu)(liu)电机增(zeng)(zeng)容改造来(lai)满足生(sheng)(sheng)产的(de)需(xu)要。所以,我们作(zuo)如下(xia)阐述分析:1、主直(zhi)流(liu)(liu)电机更新增(zeng)(zeng)容主要因素是(shi):没(mei)有风险,可靠,只需(xu)订(ding)购一台新直(zhi)流(liu)(liu)电机...
目前在修理低(di)压(ya)中(zhong)小(xiao)型电(dian)(dian)机(ji)时,普遍采用(yong)E级(ji)绝(jue)缘(yuan)(yuan)代替老电(dian)(dian)机(ji)A级(ji)绝(jue)缘(yuan)(yuan),从而提(ti)(ti)高了(le)电(dian)(dian)机(ji)的(de)(de)(de)(de)使用(yong)寿命。但随(sui)着绝(jue)缘(yuan)(yuan)材料和绝(jue)缘(yuan)(yuan)处理工艺的(de)(de)(de)(de)发(fa)展,有必要把目前E级(ji)绝(jue)缘(yuan)(yuan)改为B级(ji)绝(jue)缘(yuan)(yuan)。通过(guo)这(zhei)样改进的(de)(de)(de)(de)电(dian)(dian)机(ji),经过(guo)几(ji)年的(de)(de)(de)(de)运行证(zheng)明,电(dian)(dian)机(ji)寿命延(yan)长了(le),电(dian)(dian)机(ji)的(de)(de)(de)(de)运行可靠性也提(ti)(ti)高了(le)。 由E级(ji)改为B级(ji)绝(jue)缘(yuan)(yuan),方法简(jian)便(bian),只需(xu)改变(bian)槽绝(jue)缘(yuan)(yuan),槽楔和NA引(yin)出线材料规格即可,因(yin)为#1032绝(jue)缘(yuan)(yuan)漆和QZ型电(dian)(dian)磁线均属B级(ji)绝(jue)缘(yuan)(yuan),不需(xu)更改。槽绝(jue)缘(yuan)(yuan)由原(yuan)来的(de)(de)(de)(de)聚酯(zhi)薄(bo)膜青壳纸...
我(wo)们都知道(dao)对于机(ji)械设备来说(shuo)我(wo)们要(yao)做(zuo)好防火措(cuo)施以(yi)(yi)及过热如(ru)(ru)何处理,这样才能够保(bao)证设备的正常运行,对于直流(liu)电(dian)机(ji)来说(shuo)也是(shi)如(ru)(ru)此(ci),那(nei)么(me)我(wo)们在使用直流(liu)电(dian)机(ji)的时候要(yao)做(zuo)哪些防火措(cuo)施呢?1、直流(liu)电(dian)机(ji)周围不得堆放杂物,电(dian)机(ji)及其启(qi)(qi)(qi)动装(zhuang)置与可燃(ran)物之间(jian)(jian)应保(bao)持适当的距离,以(yi)(yi)免引起(qi)火灾。2、电(dian)机(ji)启(qi)(qi)(qi)动应遵循规定的启(qi)(qi)(qi)动次数(shu)和间(jian)(jian)隔时间(jian)(jian),尽量少启(qi)(qi)(qi)动,以(yi)(yi)免因定子绕组积累过热而(er)起(qi)火。3、运行过程中(zhong),电(dian)机(ji)的电(dian)流(liu)、电(dian)压(ya)不得超过允许范围,电(dian)机(ji)冷(leng)却系统...
一、电机(ji)耗能(neng)表现主要在以下几方面(mian):1、老、旧(淘汰)型电机(ji)的(de)仍(reng)在使用这些(xie)电机(ji)采用E级(ji)绝缘,体积较大,启动性能(neng)差,效率(lv)低(di)。虽经历年改造,但仍(reng)有许多地方在使用。2、维修(xiu)管(guan)理(li)不(bu)善有些(xie)单位对(dui)电机(ji)及(ji)设(she)备没(mei)有按照要求进(jin)行维修(xiu)保养,任其长期(qi)运行,使得损耗不(bu)断(duan)增(zeng)大。3、电机(ji)负载率(lv)低(di)。由于电机(ji)选择(ze)不(bu)当,富裕(yu)量过(guo)大或生产工(gong)艺变化(hua),使得电机(ji)的(de)实际(ji)工(gong)作负荷远小于额定负荷,大约占装机(ji)容(rong)量30%~40%的(de)电机(ji)在30%~50%的(de)额定负荷下运行,运...
子昂机(ji)(ji)电(dian)(dian)设(she)(she)备。专注于电(dian)(dian)机(ji)(ji)设(she)(she)备的维修研发生产(chan),其中直(zhi)流电(dian)(dian)机(ji)(ji)设(she)(she)备所(suo)生产(chan)出的电(dian)(dian)机(ji)(ji)用途非常(chang)广泛,在我们日常(chang)生活(huo)中随处可(ke)见,比如有:1、电(dian)(dian)动工具方面(mian):电(dian)(dian)钻(zuan)、螺丝(si)批等(deng)(deng)。2、医疗方面(mian):血压计(ji)等(deng)(deng)。3、玩具方面(mian):四驱(qu)车(che)、轨道(dao)车(che)、直(zhi)升飞机(ji)(ji)、航模、船、游戏(xi)机(ji)(ji)手(shou)柄等(deng)(deng)。4、汽(qi)车(che)方面(mian):空调(diao)控制(zhi)器(qi)、后视镜(jing)镜(jing)面(mian)调(diao)整、大灯调(diao)节(jie)、车(che)窗升降、座椅调(diao)节(jie)等(deng)(deng)。5、小家电(dian)(dian)方面(mian):电(dian)(dian)吹风(feng)、搅拌器(qi)、吸尘器(qi)、CD机(ji)(ji)等(deng)(deng)。6、个(ge)人护(hu)理(li)方面(mian):剃须刀、电(dian)(dian)动牙刷、卷...
电(dian)(dian)气(qi)专(zhuan)业工作者对于电(dian)(dian)机(ji)修理,主要指(zhi)的是绕组部分(fen),但(dan)是为了(le)能在短时间内有效地排除电(dian)(dian)动(dong)机(ji)的故障,以利(li)于及(ji)时恢(hui)复生(sheng)产,电(dian)(dian)工必须学(xue)会检查分(fen)析和排除电(dian)(dian)动(dong)机(ji)故障的方法,学(xue)会掌握(wo)机(ji)械部分(fen)修理方法也是很必要的。一、电(dian)(dian)动(dong)机(ji)的拆(chai)卸1、拆(chai)卸皮带轮(lun)或联(lian)轴(zhou)(zhou)器(qi)先(xian)将皮带轮(lun)或联(lian)轴(zhou)(zhou)器(qi)端面距前(qian)端盖处的位置尺寸(cun)记录(lu)下来(lai),然后把皮带轮(lun)或联(lian)轴(zhou)(zhou)器(qi)上(shang)的固定(ding)螺(luo)丝或销(xiao)子松(song)脱,再(zai)用拉(la)力把皮带轮(lun)或联(lian)轴(zhou)(zhou)器(qi)慢(man)慢(man)拉(la)出来(lai)。如(ru)(ru)果拉(la)不(bu)出来(lai),可以渗入(ru)煤油再(zai)拉(la),如(ru)(ru)仍(reng)拉(la)...