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(dian)動葫蘆結構(gou)緊湊，電(dian)機軸線(xian)垂直于(yu)卷(juan)筒軸線(xian)的電(dian)動葫蘆采用蝸輪(lun)傳動裝置(zhi)。其(qi)缺點(dian)為：長度尺寸(cun)大(da)，寬(kuan)度方面(mian)尺寸(cun)大(da)，結構(gou)粗笨，機械效率低(di)(di)，加(jia)工(gong)較(jiao)難等。液壓(ya)系(xi)統為雙(shuang)重控(kong)制(zhi)(zhi)，溢流調節閥、磁接點(dian)壓(ya)力表均可對(dui)壓(ya)力進行(xing)精確的控(kong)制(zhi)(zhi)。電(dian)器(qi)控(kong)制(zhi)(zhi)部門(men)采用了低(di)(di)電(dian)壓(ya)控(kong)制(zhi)(zhi)，增加(jia)了支配系(xi)統的安全(quan)性(xing)。

　　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.