電(dian)動葫(hu)蘆是(shi)一種起(qi)重量較小(xiao)，結構簡單的(de)起(qi)重機構，它用(yong)于工礦企業中(zhong)進行(xing)小(xiao)型設備(bei)的(de)吊運、安裝與修(xiu)理工作；由于其體積(ji)小(xiao)，占用(yong)廠(chang)房面(mian)積(ji)較少，使用(yong)靈活方(fang)便。

目前生產的CD型鋼絲繩電動葫蘆起重量(liang)分別為(wei)0.5、1t、2t、3t、5t、10t。該系(xi)列產(chan)(chan)品均采(cai)用ZZ型(xing)錐(zhui)(zhui)形(xing)轉(zhuan)(zhuan)(zhuan)子(zi)(zi)電(dian)動(dong)(dong)(dong)(dong)機(ji)(ji)(ji)(ji)，即(ji)(ji)轉(zhuan)(zhuan)(zhuan)子(zi)(zi)與定于呈(cheng)錐(zhui)(zhui)形(xing)，其結構如圖7-3所示(shi)。當(dang)錠子(zi)(zi)通(tong)(tong)電(dian)后，產(chan)(chan)生(sheng)磁(ci)場，磁(ci)力線垂(chui)直于轉(zhuan)(zhuan)(zhuan)子(zi)(zi)表面，于是(shi)產(chan)(chan)生(sheng)一個軸(zhou)(zhou)向(xiang)(xiang)(xiang)分力，使轉(zhuan)(zhuan)(zhuan)子(zi)(zi)3客服(fu)彈(dan)簧(huang)(huang)力，向(xiang)(xiang)(xiang)錐(zhui)(zhui)形(xing)小端(duan)方向(xiang)(xiang)(xiang)軸(zhou)(zhou)向(xiang)(xiang)(xiang)移動(dong)(dong)(dong)(dong)，轉(zhuan)(zhuan)(zhuan)子(zi)(zi)被(bei)吸(xi)進定子(zi)(zi)，并使錐(zhui)(zhui)形(xing)制動(dong)(dong)(dong)(dong)器7脫離后蓋6，允許轉(zhuan)(zhuan)(zhuan)子(zi)(zi)自(zi)由轉(zhuan)(zhuan)(zhuan)動(dong)(dong)(dong)(dong)。當(dang)初斷電(dian)源時，在(zai)被(bei)壓(ya)縮彈(dan)簧(huang)(huang)4的作用下(xia)，轉(zhuan)(zhuan)(zhuan)子(zi)(zi)向(xiang)(xiang)(xiang)方向(xiang)(xiang)(xiang)軸(zhou)(zhou)向(xiang)(xiang)(xiang)移動(dong)(dong)(dong)(dong)，使錐(zhui)(zhui)形(xing)制動(dong)(dong)(dong)(dong)圈(quan)緊(jin)剎(cha)于后蓋上(shang)，實現轉(zhuan)(zhuan)(zhuan)子(zi)(zi)停車制動(dong)(dong)(dong)(dong)。                                                                                                                                                                           錐(zhui)(zhui)形(xing)電(dian)動(dong)(dong)(dong)(dong)機(ji)(ji)(ji)(ji)制造(zao)工藝較為(wei)發雜。一些工廠常采(cai)用磅磁(ci)式電(dian)動(dong)(dong)(dong)(dong)機(ji)(ji)(ji)(ji)來代替錐(zhui)(zhui)形(xing)電(dian)動(dong)(dong)(dong)(dong)機(ji)(ji)(ji)(ji)。磅磁(ci)式電(dian)動(dong)(dong)(dong)(dong)機(ji)(ji)(ji)(ji)轉(zhuan)(zhuan)(zhuan)子(zi)(zi)和錠子(zi)(zi)都是(shi)普通(tong)(tong)圓柱形(xing)，在(zai)轉(zhuan)(zhuan)(zhuan)子(zi)(zi)端(duan)面裝有磁(ci)板(ban)環（即(ji)(ji)銜鐵盤(pan)），當(dang)電(dian)流接通(tong)(tong)后，瓷板(ban)環與磁(ci)盤(pan)圈(quan)（即(ji)(ji)制動(dong)(dong)(dong)(dong)器）相互(hu)吸(xi)引產(chan)(chan)生(sheng)軸(zhou)(zhou)向(xiang)(xiang)(xiang)拉力，克服(fu)彈(dan)簧(huang)(huang)阻力，使錐(zhui)(zhui)形(xing)制動(dong)(dong)(dong)(dong)圈(quan)和后蓋分開(kai)，電(dian)動(dong)(dong)(dong)(dong)機(ji)(ji)(ji)(ji)的轉(zhuan)(zhuan)(zhuan)子(zi)(zi)可自(zi)行運轉(zhuan)(zhuan)(zhuan)，不受制動(dong)(dong)(dong)(dong)；斷電(dian)后錐(zhui)(zhui)形(xing)制動(dong)(dong)(dong)(dong)圈(quan)在(zai)彈(dan)簧(huang)(huang)的作用下(xia)，與后蓋緊(jin)合對電(dian)動(dong)(dong)(dong)(dong)機(ji)(ji)(ji)(ji)進行制動(dong)(dong)(dong)(dong)。