FIELD: transport.
SUBSTANCE: proposed crane comprises running gear with moving elements interacting with ground, rotary platform coupled with said running gear to rotate thereon, boom mounted on rotary platform front section, mast with its first end mounted on rotary platform, rear connection element arranged between mast and rotary platform rear part are coupled therewith, counterweight moving section, at least one hydraulic cylinder and, at least one lever coupled with rotary platform to revolve on first end with said platform and with hydraulic cylinder on opposite end. Lever and hydraulic cylinder are arranged between rotary platform and counterweight section and jointed therewith to allow cylinder rod rippling in to change counterweight position relative to rotary platform. Said counterweight is mounted ahead of the point located immediately under mast top when crane hook has no cargo and behind it when cargo is hooked on crane boom.
EFFECT: higher lifting capacity.
31 cl, 14 dwg
