Dredging device, dredging system and dredging method

摘要

Problem to be solved: to provide a dredging device, dredging system and dredging method capable of realizing efficient dredging without obstructing pumps or piping by dredging the sand by using a pump.Dredging device 700An underwater work machine 300 having a dredging attachment 100 attached to the tip of the armHaving a controller 600Dredging attachment 300Pump 30 andThe suction pipe 40 and the transport pipe 35 communicating with the pumpA screen 60 having a plurality of apertures 65 and a cutting bit 64 surrounding the suction port of the suction tubeIt has an actuator 50 for rotating the screenController 600The rotation control of the actuator 50 is controlled.Diagram