Elastic beam nonlinear vibration test platform

Abstract

The invention discloses an elastic beam nonlinear vibration test platform, comprising a table body, a crossed roller bearing, a turntable and a motor; the crossed roller bearing and the turntable are arranged on the top plate of the table body from bottom to top; The outer ring of the bearing is fixed on the table body, the inner ring of the bearing is matched with the bottom end of the turntable, and the two are connected and fixed as a whole, so that the turntable can rotate freely relative to the table body; the turntable is a regular triangular prism with three edges and corners along its axial direction, etc. The radial section is a hexagonal table body cut by volume, the center is provided with an axial through hole, and the three cutting surfaces are provided with spaced upper elastic beam mounting holes and lower elastic beam mounting holes along the radial direction; The motor is fixed under the top plate of the table body, and its motor output shaft passes through the through hole opened on the top plate of the table body and is fixed in the axial through hole; the elastic beam nonlinear vibration test platform is simple in structure, strong in operability, and in The structural design effectively eliminates the gap error caused by the fixing method and improves the measurement efficiency.

Description

technical field [0001] The invention relates to the technical field of mechanical vibration detection, in particular to an elastic beam nonlinear vibration test platform. Background technique [0002] With the development of machinery industry, the problem of vibration suppression of flexible structural components has become increasingly prominent. Once the flexible member is excited, because of its tiny structural damping, the vibration of the flexible member will be difficult to stop in a short time, and the vibration of the flexible member will cause resonance, which will finally affect the working accuracy of the entire product. Therefore, the research on the vibration of flexible components is a very meaningful subject. [0003] From aircraft propellers to cantilever cranes, cantilever beam structures are widely used, but these structures all have vibration problems when performing rotary motion. For example, in the machinery industry, mechanical vibration is a common ...

AI Technical Summary

Problems solved by technology

At present, the existing technology does not have a test bench design for the vibration measurement of the cantilever beam in the rotating state, especially for the simultaneous detection of the vibration of the cantilever beam of different materials and different lengths.

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