Fixed joggle device and manufacturing method thereof, and method for fixing joggle of starting air pipe

By using a fixed template device in a low-speed diesel engine, the relative positions of the flanges at both ends of the starting air pipe can be precisely controlled, solving the problem of difficult installation of the starting air pipe, improving production efficiency and product quality, and reducing the risk of cracking.

CN122165146APending Publication Date: 2026-06-09CSSC MES DIESEL
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CSSC MES DIESEL
Filing Date
2026-03-31
Publication Date
2026-06-09

AI Technical Summary

Technical Problem

In marine low-speed diesel engines, the relative spatial position of the flanges at both ends of the starting air pipe is difficult to control precisely, leading to installation difficulties and affecting service life and safety.

Method used

A fixed template device is used. By setting support columns and connecting discs on the base frame, the center point of the flange is accurately determined and threaded holes are drilled to ensure the accuracy of the relative position of the flanges at both ends of the starting air pipe. The fixed template device is then used for assembly and spot welding.

Benefits of technology

It improves the positioning accuracy of the flanges at both ends of the starting air pipe, avoids installation problems caused by accuracy issues, improves production efficiency and product quality, and reduces the risk of cracking.

✦ Generated by Eureka AI based on patent content.

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Abstract

This invention relates to the field of low-speed diesel engine manufacturing technology, and discloses a fixed template device and its manufacturing method, as well as a fixed template method for starting air pipes. After the first connecting block and the second connecting block are installed, the surfaces of the two connecting blocks that connect with the flanges are machined. The machining dimensions and angles are determined according to the relative spatial positions of the flanges at both ends of the air pipe, forming the first connecting disc and the second connecting disc. The center point of the flange on the machined surface is then determined, and threaded holes for connection with the flanges are drilled to improve subsequent assembly accuracy. The flanges at both ends of the starting air pipe to be machined are fixed using the threaded holes of the first connecting disc and the second connecting disc, and the template assembly is spot welded. This improves the positioning accuracy of the flanges at both ends of the starting air pipe during template assembly, solves the problem of difficult installation due to manufacturing accuracy issues, reduces on-site matching and rework operations during the installation and use of the starting air pipe due to poor weld quality, and improves production efficiency and product quality.
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