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冶金專用橋式
這種(zhong)起(qi)(qi)重(zhong)機在(zai)鋼(gang)鐵生產過程中可參與特定的(de)工(gong)藝操作(zuo),基本結構與普(pu)通橋式起(qi)(qi)重(zhong)機相似,但(dan)在(zai)起(qi)(qi)重(zhong)小車上還裝有(you)特殊的(de)工(gong)作(zuo)機構或裝置。這種(zhong)起(qi)(qi)重(zhong)機的(de)工(gong)作(zuo)特點是使用頻(pin)繁、條件惡劣,工(gong)作(zuo)級(ji)別較高,主要有(you)5種(zhong)類型:
1.鑄造起重機:
供吊運(yun)鐵(tie)(tie)水注入混鐵(tie)(tie)爐、煉鋼爐和吊運(yun)鋼水注入連續鑄錠設備或(huo)鋼錠模等用(yong)。主(zhu)小車吊運(yun)盛(sheng)桶,副小車進行翻(fan)轉盛(sheng)桶等輔助工作。
2.夾鉗起重機:
利用夾鉗將高(gao)溫鋼錠垂直地吊運到深坑均(jun)熱爐中,或把它取出放到運錠車上。
3.脫錠起重機:
用(yong)以把(ba)鋼錠(ding)(ding)(ding)(ding)從(cong)鋼錠(ding)(ding)(ding)(ding)模(mo)(mo)中強制脫出。小(xiao)車上有專門的(de)(de)脫錠(ding)(ding)(ding)(ding)裝置,脫錠(ding)(ding)(ding)(ding)方式根據錠(ding)(ding)(ding)(ding)模(mo)(mo)的(de)(de)形狀而定(ding):有的(de)(de)脫錠(ding)(ding)(ding)(ding)起重機用(yong)頂桿(gan)壓(ya)住(zhu)鋼錠(ding)(ding)(ding)(ding),用(yong)大鉗提起錠(ding)(ding)(ding)(ding)模(mo)(mo);有的(de)(de)用(yong)大鉗壓(ya)住(zhu)錠(ding)(ding)(ding)(ding)模(mo)(mo),用(yong)小(xiao)鉗提起鋼錠(ding)(ding)(ding)(ding)。
4.加料起重機:
用(yong)以將爐料加(jia)到(dao)平爐中。主小車(che)的立柱下端裝有挑(tiao)(tiao)桿,用(yong)以挑(tiao)(tiao)動料箱并(bing)將它送入爐內。主柱可(ke)繞垂(chui)直軸(zhou)回(hui)轉(zhuan)(zhuan),挑(tiao)(tiao)桿可(ke)上下擺動和回(hui)轉(zhuan)(zhuan)。副小車(che)用(yong)于修(xiu)爐等輔助(zhu)作業(ye)。
5.鍛造起重機:
用以與水壓(ya)機配(pei)合(he)鍛造(zao)大型工件(jian)。主小(xiao)車吊鉤(gou)上懸掛特殊(shu)翻(fan)料器,用以支持和翻(fan)轉工件(jian);副小(xiao)車用來抬(tai)起工件(jian)。
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