Semi-automatic trimming device for ocean engineering large-diameter steel tube

Abstract

The invention discloses a semi-automatic trimming device for an ocean engineering large-diameter steel tube. The semi-automatic trimming device is mounted on a steel tube arranged in a vertical direction, and comprises a rail bracket, at least one upper roller group, an external roller group, at least one internal roller group, a height adjusting bracket and a cutting mechanism, wherein the rail bracket is rotatably connected to each upper roller group, the external roller group and each internal roller group, each upper roller group fits to the upper ring-shaped end of the steel tube, and canperipherally roll along the upper end surface of the steel tube, each internal roller group fits to the inner wall of the steel tube, and can roll along the inner wall of the steel tube, the externalroller group fits to the outer wall of the steel tube and can roll along the outer wall of the steel tube, the rail bracket is connected to the height adjusting bracket, and the height adjusting bracket is connected with a cutting mechanism for cutting the steel tube. The semi-automatic trimming device overcomes trolley gravity of a magnetic cutting mechanism, keeps the magnetic cutting mechanismto perform positive circling motion along the steel tube, solves the unstable problems such as path inclining or spiral descending, and guarantees cutting height and groove precision of the steel tube.

Description

technical field [0001] The invention relates to the technical field of steel pipe repairing, in particular to a semi-automatic repairing device for large-diameter steel pipes in marine engineering. Background technique [0002] At present, in the construction and assembly process of offshore platform modules and jackets, it is frequently necessary to adjust the height of steel pipes and implement steel pipe cutting. When cutting steel pipes, the cutting machine is usually placed horizontally, the torch is placed vertically, and the magnetic cutting trolley moves in a circle around the pipe to achieve cutting. However, some steel pipes to be cut are in the vertical direction, such as offshore jacket steel piles, water-resistant casings, etc., because they need to be cut horizontally in the height direction, it is necessary to cut the steel pipe equipment to stick to the outer wall of the vertical steel pipe and perform horizontal circular operation. , while the torch is plac...

AI Technical Summary

Problems solved by technology

The difficulty lies in: the effect of gravity will cause the cutting machine walking around the outer wall of the steel pipe to deviate in the direction of gravity. Neither the magnetic cutting trolley nor the chain cutting machine can guarantee the cutting accuracy, and even spiral downward, so that the cutting cannot be achieved. Accuracy requirements

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