2018
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11
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28
點擊次數:
877
一、前言(yan) 門(men)式起(qi)(qi)重(zhong)(zhong)機(ji)(ji)(ji)是通過(guo)橋(qiao)架兩側支腿(tui)支撐在地(di)面軌道上(shang)運(yun)(yun)行(xing)的(de)橋(qiao)架型起(qi)(qi)重(zhong)(zhong)機(ji)(ji)(ji)，又(you)稱龍門(men)吊(diao)，是一種(zhong)將(jiang)吊(diao)鉤(gou)或其它取(qu)物裝(zhuang)(zhuang)置上(shang)的(de)重(zhong)(zhong)物通過(guo)垂直升(sheng)(sheng)(sheng)降和水平移(yi)動來實現物料轉移(yi)的(de)重(zhong)(zhong)載起(qi)(qi)重(zhong)(zhong)設(she)備。門(men)式起(qi)(qi)重(zhong)(zhong)機(ji)(ji)(ji)具有場地(di)利用(yong)率高、作業范(fan)圍大(da)、適應面廣、通用(yong)性(xing)強等(deng)特點;廣泛應用(yong)于建(jian)(jian)筑工(gong)(gong)程及橋(qiao)梁施工(gong)(gong)、電(dian)力(li)、船(chuan)舶、汽車(che)(che)制(zhi)(zhi)造(zao)、冶金(jin)、礦(kuang)山、建(jian)(jian)筑、橋(qiao)梁等(deng)基礎設(she)施的(de)建(jian)(jian)設(she)。 二、變頻器(qi)(qi)(qi)控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)應用(yong)方案 門(men)式起(qi)(qi)重(zhong)(zhong)機(ji)(ji)(ji)主(zhu)要由主(zhu)吊(diao)鉤(gou)、副鉤(gou)、大(da)車(che)(che)行(xing)走機(ji)(ji)(ji)構、小車(che)(che)行(xing)走機(ji)(ji)(ji)構和電(dian)氣控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)系統(tong)構成;動力(li)驅動機(ji)(ji)(ji)構均采(cai)用(yong)變頻無(wu)級(ji)調(diao)速控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)，改善其啟動和停止時(shi)的(de)沖(chong)擊(ji)，提高運(yun)(yun)行(xing)平穩性(xing)和定位的(de)準確(que)性(xing)。 1、提升(sheng)(sheng)(sheng)機(ji)(ji)(ji)構：采(cai)用(yong)新(xin)科瑞C500系列(lie)起(qi)(qi)重(zhong)(zhong)專用(yong)變頻器(qi)(qi)(qi)進(jin)行(xing)控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)，選擇無(wu)PG開環矢量控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)模式控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)單臺(tai)(tai)(tai)(tai)或多臺(tai)(tai)(tai)(tai)電(dian)機(ji)(ji)(ji)實現提升(sheng)(sheng)(sheng)機(ji)(ji)(ji)的(de)上(shang)升(sheng)(sheng)(sheng)和下降，用(yong)多段(duan)數實現高、低速的(de)轉換(huan)。 2、大(da)、小車(che)(che)行(xing)走機(ji)(ji)(ji)構：采(cai)用(yong)新(xin)科瑞起(qi)(qi)重(zhong)(zhong)專用(yong)變頻器(qi)(qi)(qi)同(tong)時(shi)控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)2臺(tai)(tai)(tai)(tai)或多臺(tai)(tai)(tai)(tai)電(dian)機(ji)(ji)(ji)實現正反轉和高、低速轉換(huan)。 三、結束語(yu) 門(men)式起(qi)(qi)重(zhong)(zhong)機(ji)(ji)(ji)經(jing)電(dian)氣改造(zao)后(hou)經(jing)6個月(yue)的(de)運(yun)(yun)行(xing)檢(jian)測節能(neng)27%;起(qi)(qi)動平滑(hua),機(ji)(ji)(ji)械沖(chong)擊(ji)小;定位準確(que)。全國約800臺(tai)(tai)(tai)(tai)門(men)式起(qi)(qi)重(zhong)(zhong)機(ji)(ji)(ji)中500臺(tai)(tai)(tai)(tai)左右(you)有變頻改造(zao)的(de)可能(neng)。這(zhe)種(zhong)改造(zao)尚有進(jin)一步性(xing)能(neng)提升(sheng)(sheng)(sheng)的(de)可能(neng):如加(jia)裝(zhuang)(zhuang)一臺(tai)(tai)(tai)(tai)變頻器(qi)(qi)(qi)拖動副鉤(gou);加(jia)裝(zhuang)(zhuang)編碼器(qi)(qi)(qi)作死循環控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi);配置觸摸屏監控(kong)(kong)(kong)(kong)(kong)運(yun)(yun)行(xing)狀態。