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下載手機APP 對於鋼鐵企業來說，絕大多數的製動係統中都采用電力液壓塊式製動器，以便使設備能夠快速、準確地停車。如本鋼煉鐵廠的皮帶運輸係統、各種起重機械等。該製動器主要由底座、製動臂、製動瓦、彈簧、杠杆、tuidongqidengzucheng。gongzuoyuanlishidangtuidongqitongdianshi，tuiganxunsushangsheng，tuidonglianjiegangganyasuozhudanhuangshizhidongwazhangkai，jigoudeyiyundong。tuidongqiduandianshi，zhudanhuangdelijiangzhidongwayajinyujigoudezhidonglunshangshijigoutingzhiyundong。zhidongqizaishiyongguochengzhongjingchanghuichuxiangezhongguzhang，yingxiangshebeidezhengchangyunxing，shenzhihuizaochengsunhuaishebeideyanzhonghouguo。
1、橋吊主卷揚機製動器存在的問題
本鋼煉鐵廠新1號hao高gao爐lu爐lu前qian橋qiao吊diao是shi高gao爐lu生sheng產chan的de重zhong要yao設she備bei，它ta的de好hao壞huai直zhi接jie影ying響xiang到dao高gao爐lu能neng否fou穩wen產chan與yu順shun產chan。如ru果guo橋qiao吊diao出chu現xian故gu障zhang，爐lu前qian就jiu無wu法fa更geng換huan鐵tie翻fan板ban，無wu法fa清qing理li鐵tie溝gou，無wu法fa更geng換huan鐵tie口kou移yi蓋gai機ji罩zhao。南nan出chu鐵tie場chang橋qiao吊diao(50t/15t)主卷揚係統的製動器采用的就是電力液壓塊式製動器(YwZ4B一500/121)，自2008年l0月8日高爐投產以來，曾出現過推動器(Ed 121/6)已通電，卻因某種故障導致製動瓦未打開，而卷揚電動機卻得電發生堵轉的故障，由於發現及時才沒有燒毀卷揚電動機(YZR 315M一10 75kw)。
當製動器發生故障時，一方麵會導致電動機超負荷運轉，電動機電流迅速增加(但該電流值不足以使保護裝置跳閘)，電dian動dong機ji發fa熱re，絕jue緣yuan降jiang低di，影ying響xiang電dian動dong機ji的de使shi用yong壽shou命ming，長chang此ci以yi往wang將jiang會hui燒shao毀hui電dian動dong機ji。另ling一yi方fang麵mian會hui使shi製zhi動dong瓦wa嚴yan重zhong磨mo損sun，如ru不bu及ji時shi更geng換huan，當dang卷juan揚yang機ji停ting轉zhuan時shi，如ru果guo正zheng在zai吊diao裝zhuang重zhong物wu，重zhong物wu就jiu會hui下xia滑hua，會hui危wei及ji人ren身shen及ji設she備bei安an全quan。煉lian鐵tie廠chang原yuan4號高爐曾發生過由於製動器的製動瓦沒有完全打開，長時間運行而燒毀電動機的事故。原3號(hao)高(gao)爐(lu)也(ye)曾(zeng)發(fa)生(sheng)過(guo)主(zhu)卷(juan)揚(yang)機(ji)製(zhi)動(dong)器(qi)的(de)製(zhi)動(dong)瓦(wa)還(hai)沒(mei)有(you)完(wan)全(quan)打(da)開(kai)電(dian)動(dong)機(ji)就(jiu)運(yun)轉(zhuan)，造(zao)成(cheng)電(dian)動(dong)機(ji)的(de)實(shi)際(ji)功(gong)率(lv)下(xia)降(jiang)，而(er)被(bei)迫(po)更(geng)換(huan)電(dian)動(dong)機(ji)的(de)事(shi)故(gu)，這(zhe)樣(yang)不(bu)但(dan)造(zao)成(cheng)設(she)備(bei)的(de)浪(lang)費(fei)，而(er)且(qie)又(you)會(hui)影(ying)響(xiang)到(dao)高(gao)爐(lu)的(de)正(zheng)常(chang)生(sheng)產(chan)。
2、解決辦法
為了避免在推動器得電後製動瓦未打開或未完全打開時電動機就運轉的故障發生，采用了接近開關(LJ30A3—15一J/EZ)jinxingbaohukongzhi。fangfashibagudingjiejinkaiguandejinshubangudingyuzhidongqipangdedizuoshang，dangzhidongwawanquandakaishi，jiangtuidongqituiganzuishangduandeweizhiduizhunjiejinkaiguandeganyingbuwei，tiaozhenghaoganyingjuli(最大距離為15mm)，根據現場的實際安裝情況，如果感應距離不夠，可在推杆的最上端焊接1個ge螺luo栓shuan。在zai推tui動dong器qi通tong電dian的de情qing況kuang下xia，推tui杆gan向xiang上shang移yi動dong，當dang最zui上shang端duan到dao達da接jie近jin開kai關guan的de感gan應ying部bu位wei時shi，製zhi動dong瓦wa完wan全quan打da開kai，同tong時shi接jie近jin開kai關guan開kai點dian閉bi合he，吊diao車che主zhu卷juan揚yang控kong製zhi回hui路lu得de電dian，電dian動dong機ji才cai能neng運yun轉zhuan。若ruo由you於yu某mou種zhong原yuan因yin，推tui杆gan不bu能neng移yi動dong或huo移yi動dong不bu到dao位wei，接jie近jin開kai關guan開kai點dian就jiu不bu能neng閉bi合he，吊diao車che主zhu卷juan揚yang控kong製zhi回hui路lu就jiu不bu能neng得de電dian，電dian動dong機ji也ye就jiu無wu法fa運yun行xing，改gai造zao前qian和he改gai造zao後hou原yuan理li。
由於接近開關觸點的電流為毫安級(400mA),buyizhijiechuanruzhujuanyangdecaozuohuiluzhong，yincijiangzhongwenjidianqidekaidianchuanruzhujuanyangjidecaozuohuiluzhong，erbazhongjianjidianqidexianquanzuoweijiejinkaiguandefuzai，zheyangdangjiejinkaiguankaidianbiheshi，zhongjianjidianqixianquandedian，qikaidianbihe，juanyangdiandongjidecaozuohuilucainengjietong，diandongjicainengyunzhuan。
