SWING CANTILEVER CRANE FOR LIFTING BOATS AND YACHTS Russian patent published in 2023 - IPC B66C23/52 

FIELD: hoisting and transport engineering.

SUBSTANCE: swing cantilever crane for lifting boats and yachts consists of a column (2) installed on a concrete base (1), at the upper end (3) of which a rotary support (4) with a drive (5) is placed. A cargo boom (6) is fixed on the rotary support (4). On one side of the cargo boom (6) in relation to the rotary support (4), two cantilever beams (7) and (8) are installed, fixed on the upper chord (9) of the cargo boom (6). On the other side of the cargo boom (6) is a counterweight (10). In the lower part of the cantilever beam (7), with the possibility of moving along it, cargo electric hoists (11) and (12) are fixed, placed on opposite sides of the cargo boom (6). In the lower part of the cantilever beam (8) with the possibility of moving along it, cargo electric hoists (13) and (14) are fixed, placed on opposite sides of the cargo boom (6). Electric drives of all electric hoists are synchronized with each other.

EFFECT: synchronized movement of cargo electric hoists along the cantilever beams, it makes possible to lower or lift boats (yachts) in a wide range of length and width.

1 cl, 3 dwg