CN214331324U

CN214331324U - Nested formula vibration isolation device

Info

Publication number: CN214331324U
Application number: CN202120365572.5U
Authority: CN
Inventors: 洪财滨; 杜晓宇; 王瑞; 梁金艳
Original assignee: Spaceflight Building Design Research Institute Co ltd
Current assignee: Spaceflight Building Design Research Institute Co ltd
Priority date: 2021-02-08
Filing date: 2021-02-08
Publication date: 2021-10-01
Anticipated expiration: 2031-02-08

Abstract

The utility model relates to the technical field of measurement and testing, in particular to a nested vibration isolation device, which comprises a base and a plurality of vibration isolation components; each vibration isolation assembly comprises a vibration isolation housing and a vibration isolation material; the vibration isolation shell is in a cylinder shape with an opening at the upper end and a closed lower end; the vibration isolation material is arranged on the inner bottom wall of the vibration isolation shell; the size of the vibration isolation housings in the plurality of vibration isolation assemblies is reduced in sequence, the vibration isolation housings in the plurality of vibration isolation assemblies are nested in sequence, and the base is arranged on the bottom wall of the innermost vibration isolation housing. The utility model discloses can make full use of the characteristic of vibration isolation material itself, realize the damping and fall the purpose of making an uproar under the prerequisite of guaranteeing vibration isolation base structural rigidity and intensity requirement to can require to adjust different vibration isolation materials to realize carrying out the making an uproar of falling of different frequency channels according to external environment and precision equipment self, can be applied to all kinds of complex environment, application scope is wide, and the material cost that adopts is lower, compares air supporting, magnetism and floats the vibration isolation more economy.

Description

Nested formula vibration isolation device

Technical Field

The utility model belongs to the technical field of the measurement and test technique and specifically relates to a nested formula vibration isolation mounting is related to.

Background

For precision measurement/test instruments and ultra-precision machining equipment, environmental vibrations are one of the major contributing factors limiting their accuracy. The vibration suppression and isolation are effective means for improving the accuracy of the equipment. The working state of the precision measurement/test instrument is quasi-static, the instrument does not introduce vibration, and only the vibration transmitted by the environment needs to be isolated; the precision machining equipment has the working characteristics that the equipment has multiple freedom degrees of motion, directly generates large-amplitude and high-frequency disturbance, and simultaneously isolates low-frequency vibration transmitted by the environment.

The high-precision test platform is a major basic device matched with advanced scientific experimental equipment and large-scale high-end precision instrument equipment for use, wherein the large-scale high-end precision instrument equipment mainly comprises a national-grade basic standard measuring instrument, a scientific instrument, a measurement test instrument of a precision sensor, precision manufacturing equipment and the like. The advanced scientific experimental equipment and the high-end precise instrument equipment are generally composed of a plurality of large or ultra-large precise instruments, the system is complex in composition, the requirement on the position precision of each other is extremely high, and the interference of external micro-vibration is extremely easy to occur. Especially, because the anti-interference characteristics of a plurality of instruments are inconsistent with the anti-interference characteristics of a tested device, and the rules and the degrees of the interference caused by vibration are different, the instruments need to be used or tested in an ultra-static environment.

The traditional way of realizing vibration isolation is to install an elastic support, namely flexible vibration isolation (such as air flotation and magnetic levitation) between the precision equipment and the foundation to reduce or isolate the transmission of vibration and realize the purposes of vibration reduction and noise reduction. In practice, however, precision equipment is not usually allowed to deform greatly, the base cannot be provided with a flexible vibration damping device, the use is inconvenient, and the flexible vibration isolation is usually expensive.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a nested formula vibration isolation device to solve the above-mentioned technical problem who exists among the prior art.

In order to solve the technical problem, the nested vibration isolation device provided by the utility model comprises a base and a plurality of vibration isolation components; each vibration isolation assembly comprises a vibration isolation housing and a vibration isolation material; the vibration isolation shell is in a cylinder shape with an opening at the upper end and a closed lower end; the vibration isolation material is arranged on the inner bottom wall of the vibration isolation shell; the sizes of the vibration isolation housings in the vibration isolation assemblies are sequentially reduced, the vibration isolation housings in the vibration isolation assemblies are sequentially nested, and the bottom wall of the vibration isolation housing positioned inside is arranged on the inner bottom wall of the vibration isolation housing positioned outside; the base is disposed on a bottom wall of the innermost vibration isolation housing.

Further, a gap is formed between the side walls of two adjacent vibration isolation housings.

Further, a gap is formed between the side wall of the vibration isolation base and the side wall of the innermost vibration isolation housing.

Further, the vibration isolation material is a composite material.

Further, the section of the vibration isolation housing is square.

Furthermore, the vibration isolation housing is made of reinforced concrete.

Adopt above-mentioned technical scheme, the utility model discloses following beneficial effect has:

the utility model provides a nested formula vibration isolation device, when using, the precision instruments setting of examination of awaiting measuring is on the vibration isolation base, and a plurality of vibration isolation casings are nested in proper order and are made whole vibration isolation device form "hard-soft-hard" elasticity vibration isolation structure, and outer vibration isolation casing can tentatively resist outside vibration, according to external environment's frequency characteristic, realizes further vibration isolation through selecting the vibration isolation material, then is located the vibration isolation casing of inlayer and the vibration isolation material realization second grade vibration isolation on its diapire. The utility model discloses can make full use of the characteristic of vibration isolation material itself, realize the damping and fall the purpose of making an uproar under the prerequisite of guaranteeing vibration isolation base structural rigidity and intensity requirement to can require to adjust different vibration isolation materials to realize carrying out the making an uproar of falling of different frequency channels according to external environment and precision equipment self, can be applied to all kinds of complex environment, application scope is wide, and the material cost that adopts is lower, compares air supporting, magnetism and floats the vibration isolation more economy.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments or the description in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural view of a nested vibration isolation device according to an embodiment of the present invention.

Reference numerals:

1-a vibration isolating housing; 2-vibration isolating material; and 3, a base.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The present invention will be further explained with reference to specific embodiments.

As shown in fig. 1, the nested vibration isolation device provided by the present embodiment includes a base 3, a plurality of vibration isolation assemblies; each vibration isolation assembly comprises a vibration isolation housing 1 and a vibration isolation material 2; the vibration isolation housing 1 is in a cylinder shape with an opening at the upper end and a closed lower end; the vibration isolation material 2 is arranged on the inner bottom wall of the vibration isolation shell 1; the sizes of the vibration isolation housings 1 in the plurality of vibration isolation assemblies are sequentially reduced, the vibration isolation housings 1 in the plurality of vibration isolation assemblies are sequentially nested, and the bottom wall of the vibration isolation housing 1 positioned inside is arranged on the inner bottom wall of the vibration isolation housing 1 positioned outside; the base 3 is provided on the bottom wall of the innermost vibration-damping housing 1.

The nested formula vibration isolation device that this embodiment provided, when using, the precision instruments setting of examination of awaiting measuring is on vibration isolation base 3, a plurality of vibration isolation casing 1 are nested in proper order and are made whole vibration isolation device form "hard-soft-hard" elasticity vibration isolation structure, outside vibration isolation casing 1 can resist outside vibration preliminarily, according to external environment's frequency characteristic, realize further vibration isolation through selecting vibration isolation material 2, then be located vibration isolation casing 1 of inlayer and the vibration isolation material 2 realization second grade vibration isolation on its diapire. The utility model discloses can make full use of the characteristic of vibration isolation material 2 itself, realize the damping and fall the purpose of making an uproar under the prerequisite of guaranteeing 3 structural rigidity of vibration isolation base and intensity requirement to can require adjusting different vibration isolation material 2 to realize carrying out the making an uproar of falling of different frequency channels according to external environment and precision equipment self, can be applied to all kinds of complex environment, application scope is wide, and the material cost that adopts is lower, compares air supporting, magnetism and floats the vibration isolation more economy.

Preferably, the vibration isolation assemblies are two, that is, the vibration isolation housings 1 are two, the two vibration isolation housings 1 are nested, and the base 3 is located on the inner bottom wall of the vibration isolation housing 1 in the inner layer.

Further, a gap is formed between the side walls of two adjacent vibration isolation housings 1, that is, an interval (cavity) is formed between two adjacent vibration isolation housings 1 inside and outside, so that the transmission of vibration of the two adjacent vibration isolation housings 1 is reduced, and the vibration isolation effect is enhanced.

Further, a gap is formed between the side wall of the vibration isolation base 3 and the side wall of the innermost vibration isolation housing 1, so that the transmission of vibration between the innermost vibration isolation housing 1 and the vibration isolation base 3 can be reduced, and the vibration isolation effect can be further enhanced.

Further, the vibration isolation material 2 is a composite material, and a user can select different composite materials according to needs.

Further, the vibration damping housing 1 has a square cross section.

Furthermore, the vibration isolation housing 1 is made of reinforced concrete, so that the rigidity and strength of the vibration isolation housing 1 are ensured.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims

1. A nested vibration isolation device is characterized by comprising a base and a plurality of vibration isolation components;

each vibration isolation assembly comprises a vibration isolation housing and a vibration isolation material; the vibration isolation shell is in a cylinder shape with an opening at the upper end and a closed lower end; the vibration isolation material is arranged on the inner bottom wall of the vibration isolation shell;

the sizes of the vibration isolation housings in the vibration isolation assemblies are sequentially reduced, the vibration isolation housings in the vibration isolation assemblies are sequentially nested, and the bottom wall of the vibration isolation housing positioned inside is arranged on the inner bottom wall of the vibration isolation housing positioned outside;

the base is disposed on a bottom wall of the innermost vibration isolation housing.

2. The nested vibration isolation device of claim 1, wherein a gap is provided between the side walls of two adjacent vibration isolation housings.

3. The nested vibration isolation device of claim 1, wherein there is a gap between the side walls of the base and the innermost side walls of the isolation housing.

4. The nested vibration isolation device of claim 1, wherein the vibration isolation material is a composite material.

5. The nested vibration isolation device of claim 1, wherein the vibration isolation housing is square in cross-section.

6. The nested vibration isolation device of claim 1, wherein the material of the vibration isolation housing is reinforced concrete.