Underwater robot propelling device

The utility model discloses an underwater robot propelling device, which belongs to the technical field of underwater robots and comprises a protective box, a driving motor is mounted in the protective box, a sealing bearing is fixedly embedded in the front surface of the protective box, and the output end of the driving motor penetrates through the inner ring of the sealing bearing and extends to the outside of the protective box. A propeller is fixedly connected to the output end of the driving motor, a waterproof motor is fixedly connected to the upper surface of the protection box, a fixing block is fixedly connected to the output end of the waterproof motor, symmetrical fixing strips are fixedly connected to the outer surface of the fixing block, and cleaning brushes are fixedly connected to the back faces of the two fixing strips. A waterproof motor can drive a fixing plate, a fixing strip and a cleaning brush to rotate, the surface of the protective net can be cleaned in real time through the cleaning