Mounting method for segmented main hinge eye plate of ship bow door

Abstract

The invention provides a ship bow door sectional type main hinge eye plate mounting method capable of avoiding welding deformation. Comprising the following steps: S1, preliminarily positioning by using a hanging vertical line projection method; s2, a first shaft tool is hoisted, and the first shaft tool sequentially penetrates through the first eye plate, the second eye plate and the third eye plate from top to bottom; s3, a second shaft tool sequentially penetrates through a fifth eye plate and a fourth eye plate from bottom to top, so that the first shaft tool and the second shaft tool are coaxially matched and fixed; s4, dial indicators are arranged on the first eye plate, the second eye plate, the third eye plate, the fourth eye plate and the fifth eye plate respectively; and S5, the first eye plate, the second eye plate, the third eye plate, the fourth eye plate and the fifth eye plate are welded according to the reading of the dial indicator. According to the mounting method for the segmented main hinge eye plate of the ship bow door, the mounting and welding coaxiality of the hinge eye plate can be guaranteed, and meanwhile welding deformation after the hinge seat plate is mounted and positioned is controlled.

Description

technical field [0001] The invention belongs to the technical field of ship bow door manufacturing, in particular to a method for installing a segmented main hinge eye plate of a ship bow door. Background technique [0002] The segmented main hinge eye plate of the bow door is composed of multiple eye plates. figure 1 shown. The existing installation method of the main hinge seat of the bow door generally includes the following steps: 1. Drop the wire and position it by vertical spot welding to ensure the initial coaxiality; 2. Fix it by welding; 3. Re-hang the wire and measure the coaxiality. Deformation is corrected by fire attack or gouging. [0003] Because the segmented main hinge is composed of multiple eye plates, even if the initial positioning is good, it is very easy to deform during the welding process. It cannot be installed, so the deformed eye plate needs to be reworked and modified, which affects the installation cycle and the next step. The probability of...

AI Technical Summary

Problems solved by technology

[0003] Because the segmented main hinge is composed of multiple eye plates, even if the initial positioning is good, it is very easy to deform during the welding process. If the center deviation of the eye plate axis is large during the electric welding process, it is difficult to meet the installation accuracy requirements. When installing the hinge arm, the axis It cannot be installed, so the deformed eye plate needs to be reworked and modified, which will affect the installation cycle and the next work

The probability of rework is very high during the installation and welding process of the segmented main hinge eye plate of the existing bow door, which greatly affects the shipbuilding cycle

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