Hatch cover mounting method

Abstract

The invention provides a hatch cover mounting method. The hatch cover mounting method comprises the following steps: S1, a hatch cover manufacturing stage; S2, a guide groove mounting stage; S3, a hatch opening manufacturing stage; S4, a guide column mounting stage; S5, matching and aligning of a hatch cover and a hatch opening; S6, calculation of the coordinate positions of hatch cover guide grooves installed on a hatch coaming; S7, calculation of the thickness of a guide flitch; and S8, hatch cover hoisting. The actual position coordinates of the guide grooves are converted through coordinate conversion, the installation position coordinates of the guide grooves installed on corresponding guide columns are obtained, theoretical alignment matching of the hatch cover and the hatch opening is achieved, then the gaps between the hatch guide grooves and the corresponding guide columns are obtained, and the thickness of the guide flitch needing to be installed is determined. The thickness of the guide flitch needing to be installed can be obtained without hoisting the hatch cover on a ship, the guide flitch is prevented from being installed on the ship, and the installation difficulty is reduced; and meanwhile, the hoisting frequency is reduced, one-time hoisting assembly of the hatch cover is achieved, hatch cover deformation is avoided, crane resource occupation is reduced, and hatch cover hoisting efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of ship building, and in particular relates to a hatch cover installation method. Background technique [0002] The hatch cover is a sealing device installed on the cargo hatch. It is a very important cargo passage device and plays the role of closing the cargo hold. The hatch cover is hoisted up and down by the guide column of the lashing bridge to open or close the cargo hatch. The guide groove on the hatch cover It needs to be tightly matched with the guide column of the lashing bridge, and the fit clearance between the guide groove on the hatch cover and the guide column of the lashing bridge is required to meet the requirements. However, in the actual production design process, in order to avoid the influence of thermal expansion and contraction, the design gap between the guide groove on the hatch cover and the guide column of the lashing bridge needs to be greater than the preset value, and then pass ...

AI Technical Summary

Problems solved by technology

[0003] For the installation of the existing hatch cover guide plate, it is necessary to hoist the hatch cover onto the ship for the first positioning. After the positioning is completed, the gantry crane waits on the spot, and the on-site personnel determine according to the actual gap between the hatch cover guide groove and the guide column of the lashing bridge. The thickness of the hatch cover guide plate that needs to be installed, because after the hatch cover falls normally along the guide column of the lashing bridge, the gap between the hatch cover guide groove wall and the guide column does not exceed 50mm, and the construction space is narrow, so it is impossible to guide the hatch cover to the plate Installed on the groove wall of the guide groove, the hatch cover needs to be lifted up by a gantry crane. After the construction personnel drills in, they perform overhead welding, which is difficult to weld. After the guide plate is welded, the hatch cover needs to be repositioned again. Final installation of the hatch cover

Due to the need to lift the hatch cover repeatedly, it not only occupies the resources of the crane, but also easily deforms the hatch cover, which affects the matching of the hatch cover and the hatch surround, and rework occurs

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