Telescopic screw jack, particularly designed for lifting flat TV screen out of furniture container to operating position

摘要

The lift has dual-screw lifting assembly (A) installed inside the three-modular telescopic column (B). Lifting assembly (A) has spindle drive screw (1) coupled via gear (6) with electric motor (5) and threaded part driven into sleeve screw (2), and its external thread engages with nut of actuator (9) of telescopic column (B). Actuator (9) and embracing it central module (8), are run coaxially and along the fixed external module (7). Bracket (C) of lifted object (20) is fitted to actuator (9). The cross-section of the wall of external (7) and central (8) module is in the shape of regular polygonal geometric figures, similar to each other and actuator (9) is similar to them in shape or is round. Module guides (7, 8, 9) are made up of linear double-row, ball bearings (10), mounted on axes of symmetry of cross-sections and accordingly with external (11) raceway and internal (12) raceway rail to the neighboring wall surfaces.