Operation platform capable of ascending and descending along cambered surface dome and mounting method thereof

Abstract

The invention discloses an operation platform capable of ascending and descending along a cambered surface dome and a mounting method thereof. The operation platform comprises two lifting units and aconnecting platform. Each of the lifting units comprises a winch bracket, a winch, a rope guide frame, a plurality of sections of guide rails, a climbing assembly, a lifting platform and a jacking oilcylinder; the rope guide frame is located below the winch; a plurality of sections of guide rails are fixed on a cylinder vertical section of a safety shell and a dome cambered surface section; the climbing assembly comprises a climbing frame, a bearing hanging bracket and two trackers; the lifting platform and the jacking oil cylinder are both arranged on the climbing frame and ascend and descend along with the climbing frame; one side of the lifting platform is rotationally connected with the climbing frame; the jacking oil cylinder is arranged below the lifting platform; the lower end of the jacking oil cylinder is hinged to the lower portion of the outer side of the climbing frame; the upper end of the jacking oil cylinder is hinged to the bottom of the lifting platform; the connecting platform is arranged between the lifting platforms of the two lifting units; and the two sides of the connecting platform are fixedly connected with the lifting platforms respectively. The operationplatform has the advantages of stable operation, large bearing capacity, reliable safety performance and the like.

Description

technical field [0001] The invention belongs to the technical field of construction of nuclear power plant facilities, and relates to an operation platform, in particular to an operation platform capable of lifting along an arc-shaped dome and an installation method thereof. Background technique [0002] The containment of Hualong No. 1 and VVER nuclear power plants is a circular cylindrical prestressed concrete structure with a spherical dome on the top. The prestressed horizontal steel beams are arranged layer by layer from the bottom of the cylinder and extended to the dome through the containment ring beam. The horizontal steel beams are divided into cylinder horizontal steel beams and dome horizontal steel beams according to different distribution positions, and all horizontal steel beams are anchored at the containment buttress columns. The horizontal steel beam construction is completed with the assistance of the prestressed construction lifting platform. Since the ho...

AI Technical Summary

Problems solved by technology

The prestressed construction lifting platform is an important tool to realize the prestressed horizontal steel beam construction of Hualong No. 1 VVER nuclear power plant. The traditional prestressed construction lifting platform adopts the method of vertical lifting platform or erecting scaffolding, which can only meet the requirements of the vertical cylinder part of the containment vessel. The construction of prestressed horizontal steel beams cannot meet the requirements of the construction of horizontal steel beams for the prestressed domes of Hualong No. 1 and VVER nuclear power plants.

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