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總結軋鋼機設備機架的作用和類型分類

更新時間:2023-08-12 10:18:32 來源:神工機械 點擊數:

     軋鋼機機架是用來安裝軋輥、軋輥軸承、軋輥調整裝置和導衛裝置等工作機座中的全部零部件,并承受全部軋制力的軋鋼機部分。因此,機架式軋鋼機中最重要的部件之一,對其強度和剛度都有較高的要求。根據軋鋼機的型式和生產工藝的工作要求,一般軋鋼機機架分為閉口式和開口式兩種。

      閉口式機(ji)架(jia)的(de)牌(pai)坊,為一整體的(de)框(kuang)架(jia),其特點(dian)是(shi)(shi)有較好的(de)強度(du)和剛(gang)度(du),常用(yong)于(yu)軋(ya)(ya)制壓力較大或對軋(ya)(ya)件尺寸要求嚴格的(de)軋(ya)(ya)鋼(gang)(gang)(gang)機(ji)上,如初(chu)軋(ya)(ya)鋼(gang)(gang)(gang)機(ji),開坯機(ji),鋼(gang)(gang)(gang)板軋(ya)(ya)鋼(gang)(gang)(gang)機(ji),鋼(gang)(gang)(gang)管軋(ya)(ya)和冷軋(ya)(ya)等,有時也用(yong)于(yu)型鋼(gang)(gang)(gang)軋(ya)(ya)鋼(gang)(gang)(gang)機(ji)。開口式機(ji)架(jia)的(de)上蓋是(shi)(shi)可拆裝(zhuang)的(de),其強度(du)和剛(gang)度(du)較閉口式機(ji)架(jia)差,而且(qie)加(jia)工(gong)面多,造價(jia)高。但(dan)其突出優點(dian)是(shi)(shi)換(huan)輥方便,故用(yong)于(yu)經常換(huan)輥的(de)橫列(lie)式型鋼(gang)(gang)(gang)軋(ya)(ya)鋼(gang)(gang)(gang)機(ji)上。特點(dian)是(shi)(shi)大中型橫列(lie)式型鋼(gang)(gang)(gang)軋(ya)(ya)鋼(gang)(gang)(gang)機(ji),幾(ji)乎(hu)全部采用(yong)開口式機(ji)架(jia)。

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      開口(kou)式(shi)機(ji)(ji)(ji)架(jia)(jia)(jia)(jia)上(shang)蓋與(yu)(yu)立(li)(li)(li)軋(ya)(ya)的連(lian)接(jie)方(fang)(fang)(fang)式(shi)有多(duo)種(zhong)(zhong),常用(yong)(yong)(yong)(yong)的有:1、螺(luo)(luo)栓(shuan)聯(lian)(lian)(lian)街  用(yong)(yong)(yong)(yong)兩個螺(luo)(luo)栓(shuan)與(yu)(yu)機(ji)(ji)(ji)架(jia)(jia)(jia)(jia)立(li)(li)(li)柱(zhu)聯(lian)(lian)(lian)接(jie)。這種(zhong)(zhong)聯(lian)(lian)(lian)接(jie)方(fang)(fang)(fang)式(shi)結構(gou)(gou)(gou)簡(jian)單,但(dan)因螺(luo)(luo)栓(shuan)較(jiao)(jiao)(jiao)長,變(bian)(bian)形(xing)較(jiao)(jiao)(jiao)大,所以(yi)機(ji)(ji)(ji)架(jia)(jia)(jia)(jia)剛(gang)度較(jiao)(jiao)(jiao)低。此外,換輥(gun)時(shi)拆裝(zhuang)螺(luo)(luo)母(mu)較(jiao)(jiao)(jiao)費時(shi)間(jian)。2、套(tao)環聯(lian)(lian)(lian)接(jie)  這種(zhong)(zhong)聯(lian)(lian)(lian)接(jie)取消了(le)立(li)(li)(li)柱(zhu)與(yu)(yu)上(shang)蓋上(shang)的垂直螺(luo)(luo)孔。套(tao)環下(xia)(xia)端(duan)用(yong)(yong)(yong)(yong)橫銷(xiao)鉸接(jie)在立(li)(li)(li)柱(zhu)上(shang),套(tao)環上(shang)端(duan)用(yong)(yong)(yong)(yong)斜(xie)楔(xie)把上(shang)端(duan)和立(li)(li)(li)柱(zhu)鏈接(jie)起(qi)來。這種(zhong)(zhong)結構(gou)(gou)(gou)換輥(gun)較(jiao)(jiao)(jiao)為(wei)方(fang)(fang)(fang)便。由于(yu)套(tao)環的斷(duan)面(mian)(mian)可大于(yu)螺(luo)(luo)栓(shuan)或圓(yuan)柱(zhu)銷(xiao),軋(ya)(ya)鋼機(ji)(ji)(ji)剛(gang)性有所改(gai)善。3、圓(yuan)銷(xiao)連(lian)接(jie)   這種(zhong)(zhong)聯(lian)(lian)(lian)接(jie)是(shi)將(jiang)上(shang)蓋與(yu)(yu)立(li)(li)(li)柱(zhu)用(yong)(yong)(yong)(yong)圓(yuan)銷(xiao)聯(lian)(lian)(lian)接(jie)后(hou),再(zai)用(yong)(yong)(yong)(yong)斜(xie)楔(xie)楔(xie)緊。其(qi)優點是(shi)結構(gou)(gou)(gou)簡(jian)單,聯(lian)(lian)(lian)接(jie)件變(bian)(bian)形(xing)較(jiao)(jiao)(jiao)小。但(dan)是(shi),在楔(xie)緊力和沖擊力作用(yong)(yong)(yong)(yong)下(xia)(xia),當圓(yuan)銷(xiao)沿剪(jian)切斷(duan)面(mian)(mian)發生(sheng)變(bian)(bian)形(xing)后(hou),拆裝(zhuang)較(jiao)(jiao)(jiao)為(wei)困難(nan),使(shi)(shi)換輥(gun)時(shi)間(jian)延長。4、斜(xie)楔(xie)聯(lian)(lian)(lian)接(jie)  上(shang)蓋與(yu)(yu)立(li)(li)(li)柱(zhu)有斜(xie)楔(xie)聯(lian)(lian)(lian)接(jie),換輥(gun)方(fang)(fang)(fang)便,又較(jiao)(jiao)(jiao)高的剛(gang)度,故稱為(wei)半閉口(kou)機(ji)(ji)(ji)架(jia)(jia)(jia)(jia),這種(zhong)(zhong)機(ji)(ji)(ji)架(jia)(jia)(jia)(jia)使(shi)(shi)用(yong)(yong)(yong)(yong)效果好,得到廣(guang)泛的使(shi)(shi)用(yong)(yong)(yong)(yong)。

      除了上(shang)述機(ji)(ji)(ji)(ji)架(jia)外,現在軋鋼機(ji)(ji)(ji)(ji)還有預應(ying)力機(ji)(ji)(ji)(ji)架(jia)和無牌坊機(ji)(ji)(ji)(ji)架(jia)等(deng),這幾種機(ji)(ji)(ji)(ji)架(jia)一般(ban)都應(ying)用(yong)在小型(xing)線材軋鋼機(ji)(ji)(ji)(ji)上(shang)。

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