CRANE LIFTING DEVICE Russian patent published in 2021 - IPC B66C11/06 

FIELD: lifting devices.

SUBSTANCE: invention relates to lifting devices. Lifting device of hoist includes truck (1) made with possibility of movement along main support structure (2) of crane. Cart (1) comprises support frame structure (3), support wheels (4), which are attached to support frame structure (3) and by means of which there is possibility of movement of bogie (1) along support structure (2). Lifting mechanism comprises rope drum (5) for lifting rope (6), rope-block device, which comprises upper pulleys (7) and lower cable-block devices (8) and through which lifting rope (6) can be directed from rope drum (5) to attachment point (9), and lifting element (10) interacting with lifting cable (6) for cargo lifting. Cable drum (5) rests on support frame structure (3) of trolley so that axis (11) of cable drum (5) is parallel to main support structure (3). In lifting device point (12) of lifting rope (6) from rope drum (5), attachment point (13) of pulley and point (14) of attachment of first end of lifting rope (6) are located in same vertical plane (14) lifting device. Cable drum (5) comprises first end (17), in direction of which winding of lifting cable (6) is provided at upper position of lifting element (10), and second end (18), in direction of which lifting rope (6) is unwound at lifting element (10) lower position. First cable unit (8a) of cable-block device (8) is located so that point (14) of lifting cable from first cable block (8a) to first pulley (7a) is located in axial direction of cable drum (5) further from second end (18) than from first end (17) of cable drum (5).

EFFECT: lifting to maximum possible height of cargo lifting is achieved using available free height.

17 cl, 21 dwg