Containment steel lining piece high-altitude welding tooling

Abstract

The invention discloses a containment steel lining fragment overhead welding tooling apparatus which comprises an overhead positioning mobile platform and a fragment rapid clamp arranged on the overhead positioning mobile platform, wherein the fragment rapid clamp comprises a mounting rack and a rapid clamping head arranged on the mounting rack; the mounting rack comprises a main body bracket as well as a primary movable pull rod and a secondary movable pull rod arranged on the main body bracket; the main body bracket comprises a fixed frame and a movable frame hinged to one end of the fixed frame; the primary movable pull rod is connected between the fixed frame and the movable frame and adjusts an included angle of the fixed frame and the movable frame; the fixed frame and the movable frame are connected with the secondary movable pull rod; the end parts of the secondary movable pull rod, the fixed frame and the movable frame are connected with the rapid clamping head. According to the invention, hoisting is rapid, and a fragment and a containment are accurately and adjustably assembled, so that the assembling error is greatly reduced, the position adjusting time is shortened, and the working strength and difficulty of workers are lowered.

Description

technical field [0001] The invention relates to a device used for quick clamping of steel lining pieces of containment shells of nuclear power plants and rapid and accurate positioning in high altitude. Background technique [0002] The steel-lined cylinder structure of the containment vessel is composed of multi-layer annular shells, and each layer of annular shells is welded by twelve pieces. Among them, the bottom layer of the annular shell is hoisted and welded as a whole after being prefabricated in the workshop. Due to the huge total weight of the annular shell, for high-rise annular shells, the containment steel lining segments need to be hoisted separately and welded at high altitude. [0003] At present, the commonly used method in nuclear power plants is: the steel lining fragments are hoisted by tower cranes, connected with the steel lining fragments through slings, and adjusted at high altitude and welded and assembled. When the subsection is aligned with the b...

AI Technical Summary

Problems solved by technology

When assembling, it is necessary to adjust the verticality of the opening of the single plate and the welding gap of the lower opening ring seam at the same time, and also pay attention to ensure the position of the penetrating part. It is difficult to guarantee the above assembly position and accuracy requirements only by lifting the tower crane

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