电动马达抓斗在抓斗的上承梁上装设一套卷扬机构，通过卷扬钢丝绳作为闭合绳，从而达到长撑杆抓斗的工作效果。ElectricMotorGrab:Equippedawindingstructureonthedeckgirderandtakingthewindingwireropeastheclosedrope,Itcanworkasalongstaybargrab.)