Strength test device for intermediate case of aeroengine with large bypass ratio

Abstract

The invention belongs to the field of aviation test devices, and particularly relates to a strength test device for an intermediate case of an aeroengine with a large bypass ratio. The strength test device comprises an intermediate case test piece, a bearing assembly, a simulation case and a loading assembly, wherein an auxiliary installation joint, a B-section installation edge, a main installation joint lug set, a first support point and a second support point are arranged at an outer side of the intermediate case test piece, a bottom end of a triangular vertical post of the bearing assemblyis fixedly arranged on a foundation platform, a bearing beam and a bearing wall are arranged on the triangular vertical post, a top-end cross beam is arrange on the bearing beam and / or the triangularvertical beam and / or the bearing wall, a bottom end of a simulation high-pressure compressor case is arranged on the foundation platform, a top end is connected with a bottom end of the intermediatecase test piece, a bottom end of a simulation fan case is in bolt connection with the B-section installation edge, the loading assembly is arranged on the bearing assembly and is used for loading thetwo support points of the intermediate case test piece, a B section, the main installation joint lug seat and the auxiliary installation joint. By the strength test device, the workload can be reduced, and the strength test device is high in universality.

Description

technical field [0001] The application belongs to the field of aviation test devices, and in particular relates to a test device for the strength of an intermediate casing of an aero-engine with a large bypass ratio. Background technique [0002] As an important load-bearing part of an aero-engine, the intermediate casing is subject to the most complex mechanical and aerodynamic loads. Once it fails, it will endanger flight safety, so it must be assessed for strength. [0003] In the casing test in the prior art, various test loads are loaded separately in the loading aspect, and the building block type lap joint is used in the device aspect, and a special design structure is required for the casing with a specific structure. The test device of the above-mentioned form has the following disadvantages. Various test loads are loaded separately, and there is a lack of synthesis and simplification of the load. When encountering a complex load test such as an intermediate casing,...

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Problems solved by technology

The above-mentioned test device has the following disadvantages. Various test loads are loaded separately, and there is a lack of load synthesis and simplification. When encountering a complex load test such as an intermediate casing, it is easy to cause too many loading channels and the test device is too complicated. The test assembly is difficult, and even the loading cannot be realized due to load interference; the test device of the building block type lap is suitable for simple tests with a small number of loads and a single working condition, and when the number of test loads and working conditions is large, the load orientation should be adjusted each time , all need to readjust the bearing and loading structure, which brings a huge workload, which not only increases the test cost, but also reduces the test efficiency

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