SU1397772A1 - Bed for testing articles for three-component angular vibration - Google Patents

Abstract

This invention relates to a testing technique. The purpose of the invention is to expand the amplitude-frequency range of the reproduced vibrations and to increase the accuracy of reproduction of specified waveforms. This goal is achieved due to the fact that oscillating HiiH plat4 prm; A combination of three mutually perpendicular axes of the axis (sts with the help of three exciters installed vertically. The exciters 2, 3 linear oscillations have rods 5,6, which are in contact with platform I at points lying on the mutually perpendicular axes of symmetry of the platform. The ends 7.8 rods 5.6 are made spherical, the rod 9 of the angular oscillation exciter is connected to the platform by means of a cardan suspension 10. Direct contact of the rods of the pathogens 2.3 with the platform reduces the errors reproduced vibrations generated in the known stands intermediate link means, and thus improve accuracy and expand the amplitude-frequency range 1 yl. and $ (L

Description

with x

N3

This invention relates to a testing technique.

The purpose of the invention is to expand the amplitude-frequency range of re-vibrated vibrations, varying the accuracy of reproduction of specified waveforms.

The drawing shows the scheme of the stand.

The bench contains platform I for mounting the test article, pathogens 2 and 3 of straight line oscillations and pathogen 4 angular oscillations mounted vertically; rods 5 and 6 of causative agents 2 and 3 are in contact with platform 1 at points lying on mutually perpendicular axes of symmetry of the platform, ends 7 and 8 of rods 5 and 6 are spherical, rod 9 of the exciter 4 angular oscillations are connected to platform 1 by means of a cardan suspension 10 .

The stand works as follows.

Depending on the set parameters of the movement of the platform 1, the movement of the rods of pathogens,

During the operation of the causative agents of 2 and 3 pr - linear oscillations, the platform 1 makes angular displacements relative to the mutually perpendicular axes X, symmetry. The exciter 4 angular oscillations, connected to the center of the platform by means of a cardan suspension 10, moves platform 1 relative to the Z axis, passing through this center.

Direct contact of the rods of the causative agents 2 and 3 with the platform allows reducing the oscillation reproduction errors created by intermediate links in the known stands, and thereby increasing the accuracy. The elimination of intermediate links, whose eigenfrequencies Q may lie in the operating range, allows us to expand the amplitude-frequency range.

Claims (1)

Invention Formula A test stand for products on a three-component angular vibration, containing three drivers with rods and an associated platform for mounting the test product, which is characterized by the purpose of expanding the amplitude-frequency range of reproducible vibrations and increasing the reproduction accuracy of specified waveforms, in it 5, two exciters of linear oscillations and one exciter of angular oscillations are used, all exciters are installed vertically, while the communication of exciters of rectilinear 0 oscillations with the table are made at points located on mutually perpendicular axes of symmetry of the platform, the ends of the rods of these pathogens are spherical and contact with the platform, and the rod of the angular exciter exciter is connected to the center of the platform by means of a gimbal. .