Main oil way cast chaplet of large diesel engine

Abstract

The invention discloses a main oil way cast chaplet of a large diesel engine. The main oil way cast chaplet comprises an outer supporting surface, an inner supporting surface and a supporting shaft, wherein the outer supporting surface is a circular arc surface; the inner supporting surface is a circular arc surface matched with a to-be-supported main oil way sand core surface, and is concentric with the outer supporting surface; the inner side of the outer supporting surface and the inner and outer sides of the inner supporting surface are chamfered; the supporting shaft is of a circular ring structure, and is separately connected with the outer supporting surface and the inner supporting surface through inner and outer circular arc edges; the main oil way cast chaplet is of an I-shaped sector structure; and a plurality of through holes are uniformly formed in the middle of the supporting shaft in the circumferential direction. According to the main oil way cast chaplet of the large diesel engine, the I-shaped sector structure is adopted, so that strength of the chaplet is guaranteed, the chaplet is conveniently arranged on a sand core, and a placing problem of the chaplet is solved; and through the shape design of the supporting surfaces and the supporting shaft of the main oil way cast chaplet, the strength requirement of the chaplet is met, molten iron and the chaplet are fused conveniently, and strength and fusion problems of the chaplet are solved.

Description

technical field [0001] The invention relates to the field of engine casting, in particular to a main oil channel casting core support of a large diesel engine. Background technique [0002] During the casting process, some sand cores are suspended when they are assembled. These sand cores are softened after being heated during the pouring process, resulting in a decrease in strength and deformation due to the buoyancy of molten iron (some sand cores are only subjected to one of the forces, specifically It should be analyzed in conjunction with the specific structure of the sand core), which will cause uneven wall thickness of the casting, and seriously cause the casting to be thin and scrapped. In order to prevent the sand core from being deformed due to support problems during the pouring process, it is necessary to add a metal core support 12 on the upper and lower sides of the sand core 11 when the sand core is assembled (see attached figure 1 ), the effective thickness ...

AI Technical Summary

Problems solved by technology

The design of the fixed end and the support surface is integrated to ensure that the core support does not damage the sand core due to force during the assembly process of the sand core, thus solving the force problem of the core support

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