電動(dong)葫蘆(lu)門式(shi)起(qi)重(zhong)(zhong)機(ji)是一種與CD1、?MD1型(xing)電動(dong)葫蘆(lu)配套(tao)使用(yong)(yong)的(de)起(qi)重(zhong)(zhong)機(ji)械，?適用(yong)(yong)于露天作(zuo)(zuo)業的(de)固定跨間。?這種起(qi)重(zhong)(zhong)機(ji)禁止(zhi)吊運易燃易爆物(wu)品，?并(bing)根(gen)據用(yong)(yong)戶要求可制成(cheng)單(dan)端外伸懸臂式(shi)或無懸臂式(shi)結構。?其(qi)主梁采用(yong)(yong)工字鋼(gang)和鋼(gang)板的(de)組合(he)梁，?結構簡單(dan)，?安(an)裝、?使用(yong)(yong)、?維修方(fang)便。?電動(dong)葫蘆(lu)門式(shi)起(qi)重(zhong)(zhong)機(ji)的(de)工作(zuo)(zuo)級(ji)別為(wei)A5級(ji)，?提供地面和操作(zuo)(zuo)室兩種操作(zuo)(zuo)方(fang)式(shi)，?供用(yong)(yong)戶自行(xing)選擇(ze)。?
電動(dong)(dong)(dong)(dong)葫(hu)(hu)蘆門(men)式起重(zhong)機(ji)的起重(zhong)量一般為(wei)0.3～80噸，?起升(sheng)高度為(wei)3～30米。?它由電動(dong)(dong)(dong)(dong)機(ji)、?傳(chuan)動(dong)(dong)(dong)(dong)機(ji)構(gou)和卷筒或鏈(lian)(lian)輪組(zu)成，?分(fen)為(wei)鋼絲繩電動(dong)(dong)(dong)(dong)葫(hu)(hu)蘆和環鏈(lian)(lian)電動(dong)(dong)(dong)(dong)葫(hu)(hu)蘆兩(liang)種(zhong)。?環鏈(lian)(lian)電動(dong)(dong)(dong)(dong)葫(hu)(hu)蘆分(fen)為(wei)進(jin)口和國產兩(liang)種(zhong)；?鋼絲繩電動(dong)(dong)(dong)(dong)葫(hu)(hu)蘆分(fen)單速(su)提升(sheng)、?雙速(su)提升(sheng)。?電動(dong)(dong)(dong)(dong)葫(hu)(hu)蘆門(men)式起重(zhong)機(ji)的組(zu)成包括減速(su)器(qi)、?起升(sheng)電機(ji)、?運行電機(ji)、?斷火器(qi)、?電纜滑線、?卷筒裝置(zhi)、?吊鉤裝置(zhi)、?聯軸器(qi)、?軟(ruan)纜電流引入(ru)器(qi)等，?集動(dong)(dong)(dong)(dong)力(li)與制動(dong)(dong)(dong)(dong)力(li)于一體。?
此外，?電動(dong)葫蘆門(men)式(shi)(shi)起(qi)重(zhong)機(ji)的(de)(de)主梁(liang)結(jie)構(gou)有(you)桁架梁(liang)和箱梁(liang)兩種形式(shi)(shi)。?桁架梁(liang)是由角鋼或工字鋼焊(han)接而成的(de)(de)結(jie)構(gou)，?具(ju)有(you)造(zao)價(jia)低、?自重(zhong)輕、?抗風性(xing)(xing)好的(de)(de)優點，?但撓度(du)(du)大(da)、?剛度(du)(du)小、?可靠性(xing)(xing)相對較低，?需要(yao)頻繁檢測焊(han)點。?而箱梁(liang)是由鋼板焊(han)接成的(de)(de)箱式(shi)(shi)結(jie)構(gou)，?具(ju)有(you)安(an)(an)全性(xing)(xing)高、?剛度(du)(du)大(da)的(de)(de)特點，?通常(chang)用(yong)于(yu)大(da)噸(dun)位(wei)及超大(da)噸(dun)位(wei)的(de)(de)門(men)式(shi)(shi)起(qi)重(zhong)機(ji)，?但也有(you)造(zao)價(jia)高、?自重(zhong)大(da)、?抗風性(xing)(xing)較差的(de)(de)缺點。?主梁(liang)形式(shi)(shi)包括單主梁(liang)和雙主梁(liang)，?單主梁(liang)門(men)式(shi)(shi)起(qi)重(zhong)機(ji)結(jie)構(gou)簡單、?制造(zao)安(an)(an)裝方便、?自身(shen)質(zhi)量小，?適用(yong)于(yu)起(qi)重(zhong)量Q≤50t、?跨度(du)(du)S≤35m的(de)(de)情(qing)況。?雙主梁(liang)門(men)式(shi)(shi)起(qi)重(zhong)機(ji)整(zheng)體剛度(du)(du)較強，?適用(yong)于(yu)大(da)噸(dun)位(wei)及超大(da)噸(dun)位(wei)的(de)(de)場合。
