Stern shaft cast steel and welding method of stern shaft cast steel and ship plate

By setting a butt joint boss on the outer part and an inner part on the inner part of the stern shaft cast steel component to form the radial plane of the ship, the problems of limited construction space and obstructed line of sight when welding the stern shaft cast steel component to the ship plate are solved, and efficient and high-quality welding results are achieved.

CN116714753BActive Publication Date: 2026-06-09GUANGZHOU WENCHONG SHIPYARD CO LTD
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Patent Information

Application Number
CN202310918342.0
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2023-07-25
Publication Date
2026-06-09
Estimated Expiration
2043-07-25

AI Technical Summary

Technical Problem

Welding the stern shaft cast steel parts to the ship plate is difficult, with low welding quality and low efficiency, mainly due to the close relative distance between the outer and inner parts, the narrow construction space, obstructed vision, and difficulty in adjusting construction equipment.

Method used

A mating boss is provided on the outer part along its own extension direction, with its inner side flush with the inner side of the outer part and its outer side lower than the outer side of the outer part. The outer plate of the ship plate overlaps and is welded on the outer side of the mating boss. The inner part extends forward and the front end faces of the two mating bosses together form the radial plane of the ship, and is welded to the inner plate of the ship plate.

Benefits of technology

This solved the problems of limited construction space and obstructed vision, reduced construction difficulty, and improved welding efficiency and quality.

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Abstract

This invention relates to the field of shipbuilding technology, and more particularly to a stern shaft cast steel component and a welding method for the stern shaft cast steel component to the ship plate. The stern shaft cast steel component includes an outer connecting part and an inner connecting part. The outer connecting part is connected to the front end of the cast steel component body. Outer connecting parts are provided on both the left and right sides of the cast steel component body. Each outer connecting part has a mating boss extending along its inner sidewall plane at its front end. The inner side of the mating boss is flush with the inner side of the outer connecting part, and the outer side of the mating boss is lower than the outer side of the outer connecting part. The outer plate of the ship plate can overlap the outer side of the mating boss and be welded and fixed thereto. The inner connecting part is connected to the front end of the cast steel component body and sandwiched between the two outer connecting parts. The inner connecting part extends forward and protrudes beyond the radial plane of the ship formed by the front ends of the two mating bosses. The inner connecting part can be welded and fixed to the inner plate of the ship plate. The welding method for the stern shaft cast steel component to the ship plate achieves a reasonable welding of the stern shaft cast steel component to the ship plate by applying the above-mentioned stern shaft cast steel component.
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