Integral vibration clamp for offline vibration test of long-shaft pump

Abstract

The invention relates to the field of off-line vibration tests, in particular to the field of vibration test clamp design, and particularly relates to an integral vibration clamp for a long-axis pump off-line vibration test. The integral vibration clamp comprises a clamp base (1) and a tail end support (4). The clamp base (1) is of an L-shaped structure. A transmission end quick-release ring of a test piece is fixedly mounted at the left end of the clamp base (1) through a mounting seat (2); a tail end inlet flange of the test piece is arranged on the tail end support (4); the tail end support (4) is fixed on the upper right side of the clamp base (1). The integrated design thought is adopted, the machining precision can be improved, a test piece can be easily positioned and installed, and assembling can be completed without being carried out on a test bed.

Description

technical field [0001] The invention relates to the field of off-line vibration tests, in particular to the field of design of vibration test jigs, in particular to an integral vibration jig for off-line vibration tests of long-axis pumps. Background technique [0002] The vibration test of the aero-engine fuel pump is an important test to assess the reliability of the test piece by simulating the mechanical vibration environment of the engine. Among them, the vibration test fixture is the key to whether the test piece can pass the vibration test, and it is also the key to the credible level of the test effect. Taking a certain long-axis pump of an aero-engine fuel system as an example, the existing design of its off-line vibrating fixture is as follows: figure 1 , mainly to fix and support the quick release ring (clamp) at the transmission end of the test piece and the inlet flange at the tail end, so as to simulate the actual installation method of the test piece on the e...

AI Technical Summary

Problems solved by technology

The vibration fixture of the welded structure is often prone to structural deformation due to insufficient aging treatment

After the deformed vibration fixture is installed with the test piece, it is easy to generate a large stress, and even the situation that it cannot be installed;

[0004] 2) The split structure is not conducive to accurate positioning during installation, and it is easy to increase the stress of the test piece, resulting in a greater degree of distortion of the movement and energy transmission of the vibrating table;

[0005] 3) The alignment and installation of the original vibration fixture must be carried out on the vibration table, which consumes the man-hours of the test equipment, is not conducive to production arrangements, and is not economical

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