A bearing ring assembly and its double-layer case structure

Abstract

The application relates to a load-bearing ring assembly, which includes: a load-bearing ring, which has a broken-line-shaped load-bearing ring body, and a first transverse portion and a second transverse portion parallel to each other extend from both ends of the force-bearing ring body respectively. A first radial portion extends radially from the first transverse portion, a first through hole is provided on the first radial portion, a second radial portion radially extends from the end of the second transverse portion, A second through hole is provided on the second radial portion, and an insertion portion extends laterally from the end of the second radial portion close to the axis of the engine; the rotor outer ring has an outer ring body and a diameter from the outer ring body Towards the extended and laterally bent hook portion, the hook portion and the outer ring body form an accommodation space, which is used to cooperate with the insertion portion; pins, which pass through the bearing ring and the rotor outer ring, are used to fix both. In this application, the length of the inner casing is shortened by assembling the outer ring of the last-stage rotor onto the load-bearing ring, and the rear end surface of the inner casing is ensured to be in front of the load-bearing ring, so as to solve the assembly interference problem of the inner casing.

Description

technical field [0001] The application belongs to the technical field of aero-engines, and in particular relates to a bearing ring assembly and a double-layer casing structure thereof. Background technique [0002] Such as figure 1 As shown, there is a double-layer casing structure in the aero-engine structure. The double-layer casing structure 10 includes an inner casing 12 and an outer casing 11. In order to connect the inner and outer casings, it is often necessary to set a bearing between the inner and outer casings. Ring 13 is connected with the inner and outer casings with bolts for load transmission. [0003] When using a paired casing (a paired casing, that is, two semicircular casings are butted to form a full-circle casing), the inner casing must be assembled by radial A when assembling, if the inner casing rear end 121 is located on the outer end surface 131 of the bearing ring Or the rear side of the bearing ring inner end face 132, then cause the inner casing ...

AI Technical Summary

Problems solved by technology

[0003] When using a paired casing (a paired casing, that is, two semicircular casings are butted to form a full-circle casing), the inner casing must be assembled by radial A when assembling, if the inner casing rear end 121 is located on the outer end surface 131 of the bearing ring Or the rear side of the inner end face 132 of the bearing ring, it will cause the inner casing to interfere with the bearing ring 13 when it is assembled from the outside to the inside, and then cause the problem that it cannot be assembled, and the engine cannot be used normally.

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