ICE JAM PREVENTING DEVICE Russian patent published in 2015 - IPC E02B15/02 B63B35/12 

FIELD: mechanical engineering.

SUBSTANCE: invention relates to hydrology, in particular to regulation of ice conditions of rivers, namely to technology of works on elimination of ice jams on rivers, and is aimed at the prevention of jam-related floods. The device is a catamaran, in the hold of one of hulls of which a diesel engine is installed, and in another a generator with an accumulator battery is installed. The device has a screw shaft for the ice pre-capturing, a screw shaft with stiffeners for final braking of the ice, a transfer change gear for the rotation of the screw shaft with stiffeners. On the shaft with stiffeners a gear wheel for the rotation of the screw shaft of the ice pre-capturing through a cargo chain is installed. The shaft of the ice pre-capturing rotates and moves up and down along the bracket groove. Rise and lowering of the screw shaft of the ice pre-capturing is performed by a hydraulic piston. The front part of the catamaran is fitted with a tank with holes for passing of water and collecting the ice pieces after preliminary passing of the river ice breaker. The similar tank and the screw shaft are installed aft the catamaran. Propulsion engines are installed in the engine room under the pilot cabin between the catamaran hulls. For the adjustment of the length of the screw shaft the brackets on racks are installed.

EFFECT: prevention of destructive floods in jam regions is provided.

2 dwg