Multi-band synchronous amplification adjustable vibration amplification device

Abstract

A multi-frequency-band synchronous amplification adjustable vibration amplification device comprises a vibration table (16), a high-frequency resonance concave ring (2), a low-frequency resonance plate (4) and a double-thread screw (7), a center base (14) is arranged between the middle of the bottom of the high-frequency resonance concave ring (2) and a vibration table top (1), and a supporting column (13) is arranged between the bottom edge of the high-frequency resonance concave ring (2) and the vibration table top (1). The low-frequency resonant plate (4) is fixed at the top of the high-frequency resonant concave ring (2), the double-thread screw (7) penetrates through the center of the low-frequency resonant plate (4), the lower spring (5) penetrates through the lower part of the double-thread screw (7), the upper spring (6) and the compression nut (8) penetrate through the upper part of the double-thread screw (7) from bottom to top, the control sensor (10) is adhered to the top of the low-frequency resonant plate (4), and the monitoring sensor (11) is adhered to the top of the vibration table top (1). Multi-frequency-band synchronous amplification can be realized, and harsh vibration test assessment can be satisfied.

Description

technical field [0001] The invention relates to a vibration amplifying device, in particular to a vibration amplifying device capable of multi-frequency synchronous amplification and adjustable, belonging to the technical field of mechanical testing. Background technique [0002] At present, with the continuous development of aerospace, aviation and other technologies, the mechanical environment in which the products are used is becoming more and more severe and complex. Components, etc., are exposed to large-scale vibration or shock environments. Whether the components can adapt to the harsh vibration environment, it is necessary to verify the key components through vibration tests. However, because the magnitude of this type of vibration is extremely large, even more than 100Grms, it is difficult to achieve with existing equipment due to the limitation of equipment capabilities; if the near-field test is used for the test piece, the number of verifications , high cost, d...

AI Technical Summary

Problems solved by technology

However, the current vibration amplification is mainly based on resonance amplification. Most of the vibration amplification is for a single condition, and it is concentrated on single-peak amplification, which is not fully adapted to the current increasingly stringent vibration assessment requirements. The spectral density value is very large, and there is also a higher power spectral density requirement at 1000Hz and 2000Hz, so a more efficient vibration amplification system is urgently needed to achieve vibration amplification

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