SCREW FRAMING Russian patent published in 2019 - IPC E04G1/36 

FIELD: construction.

SUBSTANCE: present invention relates to the construction, namely to auxiliary devices intended for servicing the internal spherical surfaces, including the internal surfaces of the ball tanks and gas-holders of the oil and gas and petrochemical industries. Technical result is achieved by the fact that the scaffolding is deployed along a helical line along the wall of the tank and contain beams that form the scaffolding frame, flooring, fencing, consoles for fastening the scaffolding to the tank body are placed inside the tank with a pitch of helix from 1.8 to 2.2 m, while the projection line of the forming flooring onto any diametrical vertical plane of the tank is horizontal.

EFFECT: technical result is to ensure unhindered access to maintain the entire inner surface of the ball tank, ensuring the smooth movement of equipment and personnel.

6 cl, 3 dwg