The application relates to the technical field of ship maintenance, in particular to a cleaning
robot for removing
rust from the surface of a ship, which comprises a wall-climbing
robot, a high-pressure
water flow spray head, a driving motor, a rotating
assembly, a variable-
diameter plate and an adjusting
assembly; a speed sensor is arranged on the wall-climbing
robot, and the wall-climbing robot is fixedly connected with the high-pressure
water flow spray head; the high-pressure
water flow spray head is composed of a shell, a driving shaft, a spray ring and a
nozzle, a driving cavity is formed in the driving shaft, and the driving cavity penetrates through the driving shaft and is communicated with the spray ring; a driving motor is arranged in the driving cavity, a rotating
assembly is arranged below the driving motor, a variable-
diameter plate is arranged on the circumferential inner side of the rotating assembly, the driving motor drives the variable-
diameter plate to slide horizontally through the rotating assembly, an adjusting assembly is arranged below the rotating assembly, the adjusting assembly is connected with the
nozzle, and the rotating assembly drives the
nozzle to deflect through the adjusting assembly; the application realizes the unification of the
moving speed and the cleaning speed of the cleaning robot through rotary motion, and thus the cleaning quality and the cleaning efficiency are improved.