TELESCOPIC DEVICE WITH SINGLE CYLINDER AND MULTIPLE BOOM SECTIONS, CRANE BOOM AND CRANE Russian patent published in 2023 - IPC B66C23/693 

FIELD: telescopic device.

SUBSTANCE: telescopic device with one cylinder and several boom sections contains a third boom extending cable, a third boom retracting cable, a telescopic mechanism, a first boom section, a second boom section and a third boom section. The telescoping mechanism has a fixed end connected to the first section of the boom and a movable end equipped with the first swivel component, the second section of the boom is connected to the movable end of the telescopic mechanism and, in addition, is equipped with a second swivel component, the third boom extension cable has one end connected to the first boom section and the other end connected to the third boom section, the third boom retraction cable has one end connected to the first boom section and the other end connected to the third boom section.

EFFECT: improved design of the boom.

10 cl, 1 dwg