Impact-resistant multi-degree-of-freedom composite vibration isolator and vibration isolation system

Abstract

The invention belongs to the field of mechanical shock isolation, and particularly discloses an impact-resistant multi-degree-of-freedom composite vibration isolator and a vibration isolation system.The vibration isolator comprises a mounting assembly, a vibration isolation assembly and a positioning assembly, the mounting assembly comprises a central shaft and a base mounted at the lower end ofthe central shaft, and the upper end of the central shaft is disc-shaped; the vibration isolation assembly comprises a shell and an elastic element, the shell sleeves the central shaft and is locatedbetween the base and the upper end of the central shaft, a cavity structure is formed between the inner wall of the shell and the outer wall of the central shaft, and a flat plate structure is arranged on the outer wall of the shell; the elastic element comprises an inner vibration isolation piece and an outer vibration isolation piece, the inner vibration isolation piece is installed in the cavity structure and comprises a radial elastic piece and an axial elastic piece which are arranged up and down, and the shell is sleeved with the outer vibration isolation piece; the positioning assemblyis mounted between the mounting assembly and the vibration isolation assembly; and the vibration isolation system comprises the vibration isolator. Effective isolation of multi-directional violent impact response can be realized, and the vibration isolator has the advantages of good isolation effect, simple structure and the like.

Description

technical field [0001] The invention belongs to the field of mechanical shock isolation, and more specifically, relates to an anti-shock multi-degree-of-freedom composite vibration isolator and a vibration isolation system, in particular to a multi-directional disc spring-metal that can realize the effect of anti-shock and vibration isolation Rubber multi-degree-of-freedom composite vibration isolator. Background technique [0002] With the development of technology, higher requirements are put forward for the shooting accuracy of weapons, and improving the aiming accuracy is crucial to the improvement of shooting accuracy. The shock response of weapon launch and ship sway is an important factor affecting the aiming accuracy and stability of precision optoelectronic equipment in weapon systems. The large amplitude and short time of the shock response can cause damage to precision optoelectronic equipment, so it is necessary to implement effective shock isolation for precisi...

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Problems solved by technology

[0003] At present, some vibration isolation system solutions have been proposed in the prior art. For example, patent CN201911099475.X discloses a polymer composite floating slab track bed vibration isolator that can realize multi-directional vibration isolation, which includes connecting devices and pressure-bearing devices. And the vibration isolation device, wherein the vibration isolation device consists of a cage and an elastic matrix, which is mainly used for the vertical, transverse and longitudinal loads generated during the operation of the train and has a good vibration isolation effect; patent CN201811584460.8 discloses a spring vibration isolator The combined hoisting method with the steel structure platform solves the problems in the prior art that the "single-piece hoisting" of the spring vibration-isolated steel structure platform affects the construction progress and the frequent measurement is required during the leveling process of the spring-vibration-isolated steel structure platform; patent CN202010494722 .2 discloses a multi-degree-of-freedom vibration isolator and vibration isolation system, which includes a sealing cover, a first axial metal rubber, a first radial metal rubber, a second axial metal rubber, a second radial metal rubber, Shell, base, buffer pad and mandrel; multi-degree-of-freedom vibration isolation system includes more than 2 multi-degree-of-freedom vibration isolators, adapter brackets, multi-angle mounting brackets and additional angle adjustment blocks

[0004] However, the above-mentioned patents are vibration isolators of one or two materials to isolate the vibration of the fixed frequency of rotating machinery, while the vibration response generated by weapons such as artillery, missiles, and ships is an impact response. The existing design of the vibration isolator None of the vibration structures can meet the effective isolation of severe shock response, and cannot be applied to weapon systems

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