The invention belongs to the technical field of
underwater equipment laying, and particularly relates to an all-electric
underwater equipment laying portal and a swing stopping device.The laying portal comprises a mounting base, a supporting leg driving
assembly, a rotating supporting leg and a swing driving
assembly; the supporting leg driving
assembly comprises a first motor arranged on the mounting base, a first right-angle transmission mechanism in driving connection with the first motor and a bearing base arranged on the mounting base, and the bearing base is used for mounting the first right-angle transmission mechanism. A driving device for laying the
portal frame is directly changed into motor driving, a hydraulic
power unit does not need to be additionally arranged, the transmission efficiency of equipment is improved, the angle adjustment freedom degree of the equipment is improved, and the installation space of a
deck on a ship is saved. The structure of the whole equipment is more simplified, motion dead points do not exist, and the equipment can achieve stepless adjustment of the laying and recycling angle in laying and recycling operation, so that the actual requirement for stepless adjustment of the laying and recycling angle according to the actual working condition is met.