Oscillation load testing structure of H-shaped dynamometric framework

Abstract

The invention provides an oscillation load testing structure of an H-shaped dynamometric framework. The oscillation load testing structure comprises a set of oscillation load full bridge converter formed by a fifth strain gauge, a sixth strain gauge, a ninth strain gauge and a tenth strain gauge, the fifth strain gauge and the sixth strain gauge are respectively bonded on the position, on the center of a framework left side beam lower cover plate, of a side beam undersurface neutral layer, and the ninth strain gauge and the tenth strain gauge are respectively boned on the position, on the center of a framework right side beam lower cover plate, of the side beam undersurface neutral layer. According to the oscillation load testing structure of the H-shaped dynamometric framework, the relationship between the load exerted on a framework structure and output voltage can be obtained, and the quasi-static relationship between the load exerted on the framework structure and fatigue damage key position strain of the frame structure also can be obtained at the same time, so that the problem that the load tested through a traditional direct testing method is in a dynamic relationship with the fatigue damage key position strain of the frame structure is solved.

Description

Technical field [0001] The invention relates to a locomotive frame, in particular to a structure for load testing the locomotive frame. Background technique [0002] In the prior art, when analyzing the load of the locomotive bogie frame structure, the direct load test method is used, that is, the bogie axle box spring and the positioning arm are made into independent load cells, and the axle box spring and the positioning arm are tested simultaneously. The load-time history of the arm under actual operating conditions, and the combined calculation to obtain the main load of the frame structure. Although this method has high measurement accuracy, there is a dynamic relationship between the measured load and the structural strain. Summary of the invention [0003] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a floating load test structure of an H-shaped force measuring frame, so as to solve the problem of the dynamic relationship...

AI Technical Summary

Problems solved by technology

[0003] In view of the deficiencies in the prior art, the object of the present invention is to provide a test structure for the ups and downs load of an H-type force-measuring frame, and to solve the problem of a dynamic relationship between the load measured by the existing test structure and the structural strain

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