Plane static pressure type vibration transferring and decoupling device and tri-axial vibration composite experiment table

Abstract

The invention relates to a tri-axial vibration composite experiment table and a plane static pressure type vibration transferring and decoupling device, wherein the experiment table comprises a working table top; and plane static pressure type vibration transferring and decoupling devices and vibration generators are connected in the direction of X, Y and X axes of the work table top. The plane static pressure type vibration transferring and decoupling device is characterized by consisting of a sliding block and a sliding seat via sliding connection; a sliding gap is arranged in a sliding surface; during the work, high-pressure oil is filled in the sliding gap through an oil filling channel to form a static pressure oil slick; as the static pressure oil slick has good rigidity under high pressure conditions, the sliding between the sliding block and the sliding seat is not obstructed. When a coaxial vibration generator generates high-frequency vibration and thrust, the vibration frequency and the thrust are transferred through a direction vertical to the static pressure oil slick; when a hetero-axial vibration generator generates high-frequency vibration and thrust, the decoupling is realized through the sliding between the sliding block and the sliding seat, so that the aim of combining the lossless transferring and the effective decoupling is realized to the greatest extent.

Description

technical field [0001] The invention relates to mechanical environment test equipment, in particular to a test bench for realizing X, Y, Z three-axis vibration compounding and a vibration transmission decoupling device in the test bench. The test bench can be used to realize the vibration environment in which the three axes of X, Y, and Z work independently, and can also be used to realize the compound vibration environment in which any two axes or the three axes of X, Y, and Z work simultaneously. Background technique [0002] The purpose of the vibration test is to artificially simulate the vibration load that the product may experience during transportation, storage and use and its impact on the test piece in the laboratory, and to assess its adaptability. The conventional test method is to use uniaxial vibration test equipment to excite the product in a certain direction. However, in the actual natural environment, the vibration and shock that the product suffers is a c...

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Problems solved by technology

Although the above-mentioned patent uses a linear guide rail as a vibration transmission decoupling device, although the structure is simple and easy to implement, it has the following disadvantages: First, due to the gap in the linear guide rail, the rigidity in the transmission direction is poor, and the transmission vibration frequency and thrust are easily distorted, especially The distortion is greater when transmitting high-frequency vibration; second, the linear guide has mechanical friction in the decoupling, and it is easy to wear after long-term work, so the reliability is poor and the service life is short; third, due to the structural limitations of the linear guide itself, the vibration frequency and Poor bearing capacity, anti-overturning ability and anti-eccentric load ability during thrust

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