Vibration isolator mechanical parameter testing device

Abstract

The invention discloses a vibration isolator mechanical parameter testing device, and aims to provide a testing device which is low in testing cost and high in testing efficiency. According to the technical scheme, a force application screw rod passing through a portal is arranged on a base cantilever platform, and a cylinder body, a vibration sensor, a mass block, a connecting vibration isolator,a rectangular force bearing seat, a T-shaped stepped shaft and a notch lock disc are fixed between a portal cross beam and the base cantilever platform; the vibration table is connected with a vibration isolator through a T-shaped stepped shaft and a rectangular force bearing seat by means of a vibration sensor connected to the top of a vibration cylinder matched with a vertical movable hoop, thevibration isolator is connected with the vibration sensor through a counterweight mass block, and the vibration sensor penetrates through the counterweight mass block. The displacement sensor in contact with the upper surface of the rectangular force bearing seat is electrically connected with a data acquisition instrument, a closed loop is formed by the data acquisition instrument and the vibration sensor, and a device for testing static and dynamic parameters of the vibration isolator is formed. According to the invention, the rigidity coupling problem of the traditional four-vibration-isolator combined test is avoided.

Description

technical field [0001] The invention relates to a testing device mainly used for quickly testing static and dynamic performance parameters of a vibration isolator, which is the mechanical parameter of a vibration isolator. Background technique [0002] Vibration phenomena are ubiquitous, and the impact of vibration effects on structures is unavoidable. All kinds of equipment installed on moving platforms or facilities are always in a vibrating environment, unless vibration is used to achieve a certain function, generally speaking vibration is always harmful, it will cause dynamic deformation and dynamic stress, these deformation and stress It will cause the strength damage and fatigue damage of the equipment structure and components, so it is usually necessary to reduce the vibration of the vibration isolator installed on the equipment to reduce the impact and damage caused by the vibration, so it is necessary to test and master the static and dynamic performance parameters ...

AI Technical Summary

Problems solved by technology

[0005] Different test devices or systems are required for static and dynamic performance tests, which not only brings about the problem of low test efficiency, but also different testers are not familiar with different test systems, instrument functions and performance parameters, and have different levels of operational accuracy. , it will also bring the problem that the process test error is difficult to control; the dynamic performance parameter test system of the traditional vibration isolator needs four vibration isolators to be tested together, there is a risk of stiffness coupling of multiple vibration isolators, and careful weight balancing is required and installation, time-consuming and labor-intensive; when it is necessary to test the dynamic performance parameters of the vibration isolator under multiple sets of pre-stressed conditions, multiple counterweights must be made, which makes the test time and physical cost very high

[0006] Among the known implementations in the art, Chinese Patent Application Publication No. CN201811646049.9 discloses a vibration isolator test device, including a base, a test assembly, a waveform generator and a main guide column, wherein the test assembly consists of a test bench, Composed of a vibration isolator, a force sensor and an external load, the test device can only test the dynamic performance parameters of the vibration isolator under the condition of a drop impact; Chinese patent application publication numbers CN201810822719.1 and CN201811086115.1 disclose two types of automotive vibration isolation The device test device, including workbench, ground simulation device, and test device including vibration isolator, is based on the principle of eccentric wheel or eccentric shaft as vibration excitation source to test the dynamic parameters of automobile spring isolator, with a structure Complicated, few test parameters, single test purpose, low test efficiency and other limitations; Chinese patent application CNCN201911078284.5 discloses a vibration isolator test device, including a fixed end, a linear actuator, a force sensor and a vibration isolator, mainly It is used for the anti-snake shock absorber test of railway vehicle system, which has limitations such as poor versatility and single test vibration condition

[0007] Facing the static and dynamic multi-performance parameter testing and high-efficiency testing requirements of general-purpose vibration isolators, the vibration isolator testing devices disclosed in the above patent applications are difficult to meet

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