Engine inlet casing structure and assembly method thereof

Abstract

The invention belongs to the technical field of engine inlet casing assembly design and specifically relates to an engine inlet casing structure. The engine inlet casing structure comprises an annularengine inlet casing, a plurality of support plates and an inner ring, wherein the engine inlet casing is provided with limiting grooves distributed circumferentially; the plurality of support platesare arranged in the engine inlet casing; one end of each support plate serves as an outer end, and the other end of each support plate serves as an inner end; the outer end of each support plate is inserted onto one limiting groove correspondingly; the inner ends of the support plates are spliced mutually to form a support plate ring; a contact face formed by splicing the inner end of one supportplate and the inner ends of the two adjacent support plates is parallel to a symmetry plane of the engine inlet casing; and the inner ring is arranged in the support plate ring and connected with thesupport plate ring. In addition, the invention further relates to an assembly method of the engine inlet casing structure. The assembly method of the engine inlet casing structure is used for realizing assembly of the engine inlet casing structure.

Description

technical field [0001] The application belongs to the technical field of engine intake casing assembly design, and in particular relates to an engine intake casing structure and an assembly method thereof. Background technique [0002] Aircraft engine intake casing structure is one of the main load-bearing frames of the engine, which includes the intake casing; the inner ring arranged in the intake casing; Support plates distributed in the circumferential direction, one end of each support plate is connected with the intake casing, and the other end is connected with the inner ring. [0003] At present, in the structure of the engine intake casing, the support plate and the intake casing are mostly connected through the support plate head. During the assembly process, the support plate head is first snapped into the limit groove of the casing, and then Connect each support plate with the corresponding support plate head, and finally assemble the inner ring to connect with e...

AI Technical Summary

Problems solved by technology

[0003] At present, in the structure of the engine intake casing, the support plate and the intake casing are mostly connected through the support plate head. During the assembly process, the support plate head is first snapped into the limit groove of the casing, and then Connect each support plate with the corresponding support plate head, and finally assemble the inner ring to connect with each support plate. Most of the connection parts are connected by welding. There are many welding seams and large stress. In the engine Cracks are easy to occur during the working process, especially the support head is mostly a casting, and the dimensional accuracy is poor. In the case of a large deviation in the size of the corresponding support plate, it is especially prone to cracks, resulting in damage to the engine, and even catastrophic ACCIDENT

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