SUCTION-TUBE DREDGER Russian patent published in 2006 - IPC E02F3/88 

FIELD: hydraulic excavation.

SUBSTANCE: invention relates to equipment for underwater mining. Proposed suction-tube dredger has housing, frame with soil-intake device hinge-connected by one end with housing and suspended by other end on pontoons connected with housing by brace members arranged at both sides of frame. Brace members and frame are furnished with guides installed in direction of frame lifting with possibility of successive engagement of guides of frame with guides of brake members and arrangement of guides of frame between pontoons for their centering relative to frame at end of frame lifting.

EFFECT: increased depth of soil suction of dredger and minimum expenses.

15 cl, 19 dwg