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磁粉制动器是根据电磁原理传递转矩的

  磁粉制动(dong)器是根据(ju)电磁原理和(he)利用(yong)磁粉传递转(zhuan)矩的,磁粉制动器和(he)磁粉离合器是利用(yong)(yong)新的材(cai)料和制造,成为改进设(she)备的选择,磁粉制动(dong)(dong)器在同滑差(cha)无(wu)关的情(qing)况下(xia)能(neng)够传递一定的转(zhuan)矩,具有响(xiang)应速(su)度 快、结构(gou)简(jian)单、无(wu)污染、无(wu)噪音、无(wu)冲击(ji)振动(dong)(dong)节约能(neng)源等优点。是一种多用(yong)(yong)途(tu)、性能(neng)优越的自动(dong)(dong)控(kong)制元件(jian)。
  磁(ci)(ci)粉制(zhi)动(dong)(dong)器(qi)(qi)还经常被用于(yu)传动(dong)(dong)机械的(de)(de)测功加载和制(zhi)动(dong)(dong)等,大卷(juan)绕半径的(de)(de)乘积(ji)应不超过制(zhi)动(dong)(dong)器(qi)(qi)的(de)(de)额(e)定转(zhuan)矩,磁(ci)(ci)粉制(zhi)动(dong)(dong)器(qi)(qi)广泛应用于(yu)印刷、包装(zhuang)、造纸及纸品加工、纺织、印刷、电(dian)(dian)线、电(dian)(dian)缆、橡(xiang)胶皮(pi)革、金属(shu)箔带(dai)加工等有关卷(juan)取装(zhuang)置的(de)(de)张(zhang)力(li)自(zi)动(dong)(dong)控制(zhi)系(xi)统中,磁(ci)(ci)粉制(zhi)动(dong)(dong)器(qi)(qi)还可(ke)作为模拟加载器(qi)(qi)使用,激磁(ci)(ci)电(dian)(dian)流(liu)与转(zhuan)矩基本(ben)成线性关系(xi)通过调节(jie)激磁(ci)(ci)电(dian)(dian)流(liu)可(ke)以(yi)控制(zhi)力(li)矩的(de)(de)大小。
  磁粉制动器的选型一般以其**制(zhi)动(dong)转(zhuan)矩来(lai)确定(ding),磁(ci)(ci)粉(fen)制(zhi)动(dong)器(qi)(qi)(qi)力矩与转(zhuan)速无关,保持(chi)定(ding)值(zhi),静力矩和动(dong)力矩没有(you)差(cha)(cha)别,磁(ci)(ci)粉(fen)制(zhi)动(dong)器(qi)(qi)(qi)的允许滑(hua)差(cha)(cha)功率(lv),在(zai)散(san)热条件一定(ding)时(shi),是(shi)定(ding)值(zhi),其连续运(yun)行时(shi),磁(ci)(ci)粉(fen)制(zhi)动(dong)器(qi)(qi)(qi)实际(ji)滑(hua)差(cha)(cha)需在(zai)允许滑(hua)差(cha)(cha)功率(lv)以内,使用(yong)转(zhuan)速高时(shi),需降低力矩使用(yong),磁(ci)(ci)粉(fen)制(zhi)动(dong)器(qi)(qi)(qi)在(zai)运(yun)输过程(cheng)中,常使磁(ci)(ci)粉(fen)聚集到某处甚至会(hui)出(chu)现“卡死”现象,此时(shi)只(zhi)需将(jiang)制(zhi)动(dong)器(qi)(qi)(qi)整体翻动(dong),使磁(ci)(ci)粉(fen)松散(san)开来(lai),或用(yong)杠杆撬动(dong)。