Dredging cutter suction device for assisting dredging and desliming by utilizing ultrasonic vibration

The invention relates to the technical field of dredgers, and provides a dredging cutter suction device for assisting dredging and desliming by using ultrasonic vibration, which comprises a shell, a bidirectional transmission assembly is arranged in the shell, and the bidirectional transmission assembly is in transmission connection with an inner rotating assembly and an outer rotating assembly and drives the inner rotating assembly and the outer rotating assembly to rotate in opposite directions. The outer side of the inner rotating assembly is sleeved with a fixing seat, the fixing seat is connected with the shell, an ultrasonic cleaning assembly is arranged on the fixing seat and makes contact with the inner rotating assembly, the inner rotating assembly comprises an inner cutter head seat, the outer rotating assembly comprises an outer cutter head seat, the inner cutter head seat is located on the inner side of the outer cutter head seat and coaxially arranged, and an inner reamer is arranged on the outer