DEVICE FOR UNDERWATER HYDRODYNAMIC CLEANING OF SURFACES Russian patent published in 2000 - IPC

FIELD: ship-repairing; manufacture of devices for underwater cleaning of ship hulls. SUBSTANCE: proposed device includes housing with load-bearing wheels, cruising and hold-down propulsors and collector. Hydrodynamic nozzles are secured on rotatable part of collector. Device is provided with hydrodynamic rudder having rod and adjustable flaps. Rotatable part of collector is kinematically linked with cruising propulsor. Propulsor is made in form of propeller mounted in nozzle. Adjustable flaps are mounted before leading edge of nozzle. Hydrodynamic rudder is fitted after trailing edge of nozzle. This rudder is connected with rear wheels by means of rod. Wheels are swivel. Their axis of turn is shifted relative to vertical axis of wheels. Hydrodynamic nozzles are made for rotation through 360 deg relative to axis perpendicular to direction of discharge of jet of working agent. Front wheels are located inside circular zone of action of hydrodynamic nozzles and rear wheels are located outside this zone. EFFECT: increased productivity and enhanced quality of cleaning surfaces; reduced power requirements and labor consumption; ease of control. 2 dwg