DREDGE EXCAVATING EQUIPMENT Russian patent published in 2002 - IPC

FIELD: mining art, in particular, complex devices for mining of gravel deposits. SUBSTANCE: dredge excavating equipment is made in the form of a rotor wheel, it has buckets with cutting edge, bunker, shaft, protective metal enclosure in the form of two quadrants located on each side of the rotor wheel, interconnected to the end part of the rotor wheel and positioned behind the working zone of the buckets for turning relative to the vertical plane of the dredge as the rotor wheel moves down the face. The bunker of the rotor wheel is provided with a bar screen installed with an inclination in parallel with the rotor wheel axle, a dumping window is made in the dumping section of the screen. A chute is additionally installed under the dumping window in parallel with the frame of the rotor wheel at a slope in the direction towards the dredge for dumping behind the protective metal enclosure. A safety bar is attached to the edges perpendicularly to the rotor axle in the center of each bucket. EFFECT: provided sand sizing directly in the face reduced expenditures connected with transportation and separation of the large oversize fraction of the mined sands, enhanced capacity and reduced dilution in the face. 3 dwg