LIFTING-MAST DEVICES Russian patent published in 2019 - IPC H01Q1/00 

FIELD: antenna equipment.

SUBSTANCE: invention relates to antenna engineering, particularly to stationary equipment, and can be used in lifting-mast devices (LMD). Lifting-mast device is a fixed pull-out hinged parallelogram including base, two parallel links of sectional mast and upper mounting platform for antenna system and allowing for lifting of section mast upper mounting platform to maintain horizontal position, wherein two parallel links of the sectional mast are articulated with additional links interconnected with the base, and distance between additional links is determined based on the condition of guaranteed prevention of local loss of parallel links of sectional mast during lifting, lowering and operation of the mast.

EFFECT: design of LMD with upper mounting platform, which preserves horizontal position regardless of angle of inclination during lifting of mast, with possibility of fixing upper mounting platform near raised mast without using additional locking devices, and prevention of local stability loss during mast lifting, lowering and standard operation.

1 cl, 2 dwg