Component composed assembly of steel structure for lifting equipment

A component composed assembly of steel structure for lifting equipment that consists of an elevating system composed of vertical pillars that are horizontally interconnected by crossbeams characterized in that back pillars are through sets of identical mirror-inverted angular joints from bent metal sheets and sets of identical mirror-inverted L-joints from bent metal sheets connected to side crossbeams and back crossbeams via threaded joints consisting of a screw, washer and threads tapped into construction profiles, while frontal pillars are through bent L-joints and bent space joints connected to the side crossbeams via threaded joints consisting of a screw, anti-release washer and threads tapped into the construction profiles and through small bent L-joints connecting the frontal pillars to frontal crossbeams, both being part of frontal profiles, via threaded joints and through flat L-joints connected to gantry profiles via threaded joints and equipped with sliding anchors having threaded rods for anchoring a construction into an object via sliding bent joint and sliding plate, wherein vertical components of frontal pillars and vertical components of back pillars are interconnected using columnar joints additionally secured by the set of identical mirror-inverted angular connecting components from bent metal sheets, the set of identical mirror-inverted L-joints from bent metal sheets at a back part of the construction, bent space joints and bent L-joints at front part of the construction, wherein the columnar joint is equipped with pressed nuts positioned at the columnar joint at 90° angle, while the endings of connected vertical components of frontal pillars and back pillars contain a set of holes.