Auxiliary device suitable for accurate hoisting and butt joint of large-diameter thin-wall cylindrical structure

Abstract

The invention discloses an auxiliary device suitable for accurate hoisting and butt joint of a large-diameter thin-wall cylindrical structure. The auxiliary device comprises a plurality of position guiding pieces and an angle guiding structure, the multiple position guiding pieces are fixed to the outer wall of the tail end of a first cylinder in a surrounding mode, and a circular-truncated-cone-shaped sliding channel is defined by the guiding faces of the multiple position guiding pieces; the angle guiding structure comprises a guiding rib and a guiding plate, the guiding plate is fixed to the outer wall of a second cylinder and is integrally in a herringbone shape, a guiding channel distributed in the axial direction of the first cylinder is formed in the middle of the guiding plate, the fixed end of the guiding rib is fixed to the first cylinder, and the guiding end of the guiding rib corresponds to the guiding channel. According to the auxiliary device suitable for accurate hoisting and butt joint of the large-diameter thin-wall cylindrical structure, when butt joint is achieved, the guiding end is inserted into the guiding channel; the auxiliary device further comprises a gap adjusting structure and a butt joint dislocation adjusting structure, hoisting butt joint of the large-diameter thin-wall cylindrical structure can be assisted, and the hoisting precision and efficiency are improved.

Description

technical field [0001] The invention relates to the technical field of marine engineering, in particular to an auxiliary device suitable for precise hoisting and docking of large-caliber thin-walled cylindrical structures. Background technique [0002] The hoisting and docking of different cylindrical structures in conventional marine engineering mainly relies on the tip structure provided inside the cylinder for docking. The welding gap after the butt joint of the cylindrical structure is mainly determined by the adjustment of the large floating crane or the precision of the insertion point. [0003] With the development of deep-water oil and gas fields, the application of large-scale deep-water single-point mooring systems in the field of marine engineering has attracted more and more attention. However, since the diameter of the cylindrical tower of the turret structure is usually far more than 10 meters, the docking accuracy of different cylinders is required to reach A...

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Problems solved by technology

[0002] The hoisting and docking of different cylindrical structures in conventional marine engineering mainly relies on the tip structure provided inside the cylinder for docking. The welding gap after the butt joint of the cylindrical structure is mainly determined by the adjustment of the large floating crane or the manufacturing accuracy of the insertion point

[0003] With the development of deep-water oil and gas fields, the application of large-scale deep-water single-point mooring systems in the field of marine engineering has attracted more and more attention. However, since the diameter of the cylindrical tower of the turret structure is usually far more than 10 meters, the docking accuracy of different cylinders is required to reach Millimeter-level, the docking structure of conventional ocean engineering cannot meet the docking accuracy requirements during the hoisting and docking of single-point cylindrical towers

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