曳引機製動器

    曳引機製動器

    電(dian)梯(ti)采(cai)用(yong)的(de)是(shi)機(ji)一(yi)電(dian)摩(mo)擦(ca)型(xing)常(chang)閉(bi)式(shi)製(zhi)動(dong)器(qi)，所(suo)謂(wei)常(chang)閉(bi)式(shi)製(zhi)動(dong)器(qi)，指(zhi)機(ji)械(xie)不(bu)工(gong)作(zuo)時(shi)製(zhi)動(dong)器(qi)製(zhi)動(dong)，機(ji)械(xie)運(yun)轉(zhuan)時(shi)鬆(song)閘(zha)。電(dian)梯(ti)製(zhi)動(dong)時(shi)
，依(yi)靠(kao)機(ji)械(xie)力(li)的(de)作(zuo)用(yong)，使(shi)製(zhi)動(dong)帶(dai)與(yu)製(zhi)動(dong)輪(lun)摩(mo)擦(ca)而(er)產(chan)生(sheng)製(zhi)動(dong)力(li)矩(ju)；電(dian)梯(ti)運(yun)行(xing)時(shi)
，依(yi)靠(kao)電(dian)磁(ci)力(li)使(shi)製(zhi)動(dong)器(qi)鬆(song)閘(zha)
，因(yin)此(ci)又(you)稱(cheng)電(dian)磁(ci)製(zhi)動(dong)器(qi)。根(gen)據(ju)製(zhi)動(dong)器(qi)產(chan)生(sheng)電(dian)磁(ci)力(li)的(de)線(xian)圈(quan)工(gong)作(zuo)電(dian)流(liu)，分(fen)為(wei)交(jiao)流(liu)電(dian)磁(ci)製(zhi)動(dong)器(qi)和(he)直(zhi)流(liu)電(dian)磁(ci)製(zhi)動(dong)器(qi)。由(you)於(yu)直(zhi)流(liu)電(dian)磁(ci)製(zhi)動(dong)器(qi)製(zhi)動(dong)平(ping)穩(wen)
，體(ti)積(ji)小(xiao)，工(gong)作(zuo)可(ke)靠(kao)
，電(dian)梯(ti)多(duo)采(cai)用(yong)直(zhi)流(liu)電(dian)磁(ci)製(zhi)動(dong)器(qi)。因(yin)此(ci)這(zhe)種(zhong)製(zhi)動(dong)器(qi)的(de)全(quan)稱(cheng)是(shi)常(chang)閉(bi)式(shi)直(zhi)流(liu)電(dian)磁(ci)製(zhi)動(dong)器(qi)。

    製動器是保證電梯安全運行的基本裝置，對電梯製動器的要求是：能產生足夠的製動力矩
，而且製動力矩大小應與曳引機轉向無關；製動時對曳引電動機的軸和減速箱的蝸杆軸不應產生附加載荷

；當製動器鬆閘或製動時，要求平穩
，而且能滿足頻繁起、製動的工作要求

；製動器應有足夠的剛性和強度
；製動帶有較高的耐磨性和耐熱性；結構簡單

、緊湊
、易於調整；應有人工鬆閘裝置；噪聲小。