電動葫蘆是一種特起重設備，安裝在天車、龍門吊之上，電動葫蘆具有體積小，自重輕，操作簡單，使用方便等特點，用于工礦企業，倉儲，碼頭等場所。
　　電動葫蘆(lu)結構緊湊，電機軸線(xian)垂直于卷筒(tong)軸線(xian)的電動葫蘆(lu)采用(yong)蝸輪傳動裝置(zhi)。其(qi)缺點為：長度尺寸大(da)，寬(kuan)度方(fang)面尺寸大(da)，結構粗笨(ben)，機械效率低，加(jia)工較難等(deng)。液壓系(xi)(xi)統為雙(shuang)重控(kong)制，溢流調節閥、磁接點壓力(li)表均可(ke)對(dui)壓力(li)進行精確的控(kong)制。電器控(kong)制部門采用(yong)了(le)低電壓控(kong)制，增加(jia)了(le)支配系(xi)(xi)統的安全性。

　　The electric hoist is a special lifting equipment, installed on the crown block and gantry crane. The electric hoist has the characteristics of small size, light weight, simple operation and convenient use, and is used in industrial and mining enterprises, warehouses, docks and other places.
　　The electric hoist has a compact structure. The electric hoist whose motor axis is perpendicular to the drum axis adopts worm gear transmission device. Its disadvantages are: large size in length, large size in width, bulky structure, low mechanical efficiency, and difficult processing. The hydraulic system is under dual control. The overflow regulating valve and magnetic contact pressure gauge can accurately control the pressure. The electrical control department adopts low voltage control, which increases the safety of the control system.