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基礎信息Product information

產(chan)品名稱(cheng)：液壓直動(dong)制動(dong)器

產(chan)品型號(hao)：DADH195-DZ

產品簡介：

液壓(ya)直動(dong)制(zhi)(zhi)(zhi)動(dong)器(qi)(qi)(qi)簡稱長沖程制(zhi)(zhi)(zhi)動(dong)器(qi)(qi)(qi)（三相制(zhi)(zhi)(zhi)動(dong)器(qi)(qi)(qi)）；液壓(ya)推桿式(shi)(shi)雙閘瓦制(zhi)(zhi)(zhi)動(dong)器(qi)(qi)(qi)，簡稱推桿式(shi)(shi)制(zhi)(zhi)(zhi)動(dong)器(qi)(qi)(qi)三種。抱閘是(shi)(shi)橋式(shi)(shi)起重(zhong)機的制(zhi)(zhi)(zhi)動(dong)器(qi)(qi)(qi)，還有防撞0位(wei)器(qi)(qi)(qi)。安(an)裝操作情(qing)況(kuang)不同，制(zhi)(zhi)(zhi)動(dong)器(qi)(qi)(qi)分為(wei)常閉式(shi)(shi)、常開式(shi)(shi)、綜(zong)合式(shi)(shi)三種類(lei)型(xing)。起重(zhong)機上多數采(cai)用常閉式(shi)(shi)制(zhi)(zhi)(zhi)動(dong)器(qi)(qi)(qi)，常閉式(shi)(shi)制(zhi)(zhi)(zhi)動(dong)器(qi)(qi)(qi)在機構(gou)不工(gong)作期間是(shi)(shi)閉合的。如果想要機構(gou)工(gong)作，只需要焦(jiao)作制(zhi)(zhi)(zhi)動(dong)器(qi)(qi)(qi)松閘將制(zhi)(zhi)(zhi)動(dong)器(qi)(qi)(qi)的摩擦副(fu)分開。

產品特性Product characteristics

 液壓直動制動器液壓直動制動器

可分為常(chang)閉(bi)式(shi)和常(chang)開式(shi)兩種。常(chang)閉(bi)式(shi)制動(dong)器(qi)(qi)(qi)經常(chang)處于合(he)閘狀(zhuang)態，當機構工(gong)作(zuo)時，可用電磁(ci)鐵或電力(li)液壓推桿器(qi)(qi)(qi)等外力(li)的(de)作(zuo)用使之(zhi)松閘。常(chang)開式(shi)制動(dong)器(qi)(qi)(qi)與(yu)之(zhi)相反，它(ta)經常(chang)處于松閘狀(zhuang)態，只有施加(jia)外力(li)時，才能使它(ta)合(he)閘。從工(gong)作(zuo)安全出發，起重機的(de)各工(gong)作(zuo)機構都(dou)應采用常(chang)閉(bi)式(shi)制動(dong)器(qi)(qi)(qi)。從工(gong)作(zuo)狀(zhuang)態來看，0選常閉式，只有通電時才能松開工(gong)作，以(yi)免突然斷電重(zhong)物自由下滑傷人。

制動器(qi)(qi)的(de)類(lei)型(xing)與(yu)結構橋式(shi)(shi)起重機的(de)常(chang)用的(de)制動器(qi)(qi)有(you)：短行程(cheng)(cheng)電(dian)子塊(kuai)式(shi)(shi)制動器(qi)(qi)、長行程(cheng)(cheng)瓦式(shi)(shi)制動器(qi)(qi)、液壓推桿瓦式(shi)(shi)制動器(qi)(qi)、液壓電(dian)磁(ci)瓦塊(kuai)式(shi)(shi)制動器(qi)(qi)等。塊(kuai)式(shi)(shi)制動器(qi)(qi)①短行程(cheng)(cheng)電(dian)子塊(kuai)式(shi)(shi)制動器(qi)(qi)：短行程(cheng)(cheng)制動器(qi)(qi)結構簡單、質量輕、制動快。缺點是沖(chong)擊和噪聲壽命短，制動力矩小，有(you)時有(you)剩磁(ci)現(xian)象，只適用于起升機構，無防(fang)爆型(xing)要用直流電(dian)源時需要更換(huan)電(dian)磁(ci)鐵。

長(chang)行程(cheng)(cheng)塊式制動(dong)器：這種制動(dong)器的優點(dian)是行程(cheng)(cheng)可以獲(huo)得(de)較0的制(zhi)(zhi)動(dong)力矩，制(zhi)(zhi)動(dong)快(kuai)，很少有剩磁現象，比較安全。缺點是沖擊和噪(zao)聲較壽命不夠長，構件多且復雜，體積和質量效率低(di)，只適用于起(qi)升機構。電力液(ye)壓(ya)塊式(shi)制(zhi)(zhi)動(dong)器：用液(ye)壓(ya)電磁塊替代長行程塊式(shi)制(zhi)(zhi)動(dong)器電磁鐵，有YWZ（液(ye)壓推桿）和YDWZ（液壓電磁(ci)鐵）兩種。YWZ型制動平(ping)穩。

無噪(zao)聲、體積小，用于運行機(ji)構和回轉機(ji)構較好。因(yin)其制停動作較慢，不適(shi)宜起(qi)升(sheng)機(ji)構使用，以防溜鉤。YDWZ型各種性能(neng)都較好，而且不需經(jing)常調整，只需直流(liu)電源(yuan)即可。帶式制動器(qi)：在外形(xing)尺(chi)寸受0制(zhi)，制(zhi)動轉矩要(yao)求很0的場合，可考慮(lv)選用帶式制動(dong)器，流動(dong)式起(qi)重(zhong)機上多(duo)采用這種(zhong)制動(dong)裝置。帶式制動(dong)器的缺點是安全性較低，制動(dong)帶斷裂將(jiang)造成(cheng)嚴重(zhong)后果(guo)。