有關盤式制動器的組成分析

　　有關(guan)盤(pan)式(shi)制動器的(de)組成分析

　　現在(zai)我們(men)的盤式制(zhi)(zhi)動(dong)(dong)器(qi)有液(ye)壓型的，由液(ye)壓控制(zhi)(zhi)，主要零部(bu)件有制(zhi)(zhi)動(dong)(dong)盤、分泵、制(zhi)(zhi)動(dong)(dong)鉗、油管等。盤式制(zhi)(zhi)動(dong)(dong)器(qi)散熱(re)快、重(zhong)量輕、構(gou)造(zao)簡單、調整(zheng)方便。

　　特別是高負載時(shi)耐(nai)高溫性能好(hao)，制(zhi)動(dong)效果穩(wen)定，而且不怕泥(ni)水侵(qin)襲，在冬季和惡劣路況下行(xing)車，很多轎車采用的(de)盤式制(zhi)動(dong)器有(you)平面式制(zhi)動(dong)盤、打孔(kong)式制(zhi)動(dong)盤以(yi)及劃線(xian)式制(zhi)動(dong)盤，其(qi)中劃線(xian)式制(zhi)動(dong)盤的(de)制(zhi)動(dong)效果和通(tong)風散(san)熱能力均比較(jiao)好(hao)。

　　制(zhi)動盤直(zhi)徑(jing)(jing)，制(zhi)動盤直(zhi)徑(jing)(jing)D應盡可(ke)能取大些，這時制(zhi)動盤的(de)(de)有(you)效半徑(jing)(jing)得到增加(jia)，可(ke)以降低制(zhi)動鉗的(de)(de)夾緊力，減少襯塊的(de)(de)單位壓力和工作溫度。受輪輞(wang)直(zhi)徑(jing)(jing)的(de)(de)***，制(zhi)動盤的(de)(de)直(zhi)徑(jing)(jing)通常選(xuan)擇為輪輞(wang)直(zhi)徑(jing)(jing)的(de)(de)70%一79%。總質量(liang)大于2t的(de)(de)汽車應取上(shang)限。

　　制(zhi)(zhi)動(dong)(dong)盤(pan)(pan)(pan)厚(hou)度(du)(du)，制(zhi)(zhi)動(dong)(dong)盤(pan)(pan)(pan)厚(hou)度(du)(du)對制(zhi)(zhi)動(dong)(dong)盤(pan)(pan)(pan)質量和工作時的溫(wen)升(sheng)有影響。為(wei)(wei)(wei)使(shi)質量小(xiao)些，制(zhi)(zhi)動(dong)(dong)盤(pan)(pan)(pan)厚(hou)度(du)(du)不(bu)宜取(qu)得(de)很大(da);為(wei)(wei)(wei)了降(jiang)低(di)(di)溫(wen)度(du)(du)，制(zhi)(zhi)動(dong)(dong)盤(pan)(pan)(pan)厚(hou)度(du)(du)又(you)不(bu)宜取(qu)得(de)過小(xiao)。制(zhi)(zhi)動(dong)(dong)盤(pan)(pan)(pan)可以做成(cheng)(cheng)實心的，或者為(wei)(wei)(wei)了散熱通(tong)(tong)風(feng)的需(xu)要在(zai)制(zhi)(zhi)動(dong)(dong)盤(pan)(pan)(pan)中間鑄出通(tong)(tong)風(feng)孔道。一(yi)般實心制(zhi)(zhi)動(dong)(dong)盤(pan)(pan)(pan)厚(hou)度(du)(du)可取(qu)為(wei)(wei)(wei)10—20mm，通(tong)(tong)風(feng)式(shi)制(zhi)(zhi)動(dong)(dong)盤(pan)(pan)(pan)厚(hou)度(du)(du)取(qu)為(wei)(wei)(wei)20～50mm，采用較(jiao)多(duo)(duo)的是20—30mm。在(zai)高速運動(dong)(dong)下緊急制(zhi)(zhi)動(dong)(dong), 制(zhi)(zhi)動(dong)(dong)盤(pan)(pan)(pan)會形成(cheng)(cheng)熱變形, 產生顫抖。為(wei)(wei)(wei)提高制(zhi)(zhi)動(dong)(dong)盤(pan)(pan)(pan)摩擦面的散熱性(xing)能(neng), 大(da)多(duo)(duo)把制(zhi)(zhi)動(dong)(dong)盤(pan)(pan)(pan)做成(cheng)(cheng)中間空(kong)洞(dong)的通(tong)(tong)風(feng)式(shi)制(zhi)(zhi)動(dong)(dong)盤(pan)(pan)(pan), 這樣可使(shi)制(zhi)(zhi)動(dong)(dong)盤(pan)(pan)(pan)溫(wen)度(du)(du)降(jiang)低(di)(di)20 %～30%。

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