CN216382378U - Inertial volume type tuning vibration isolator - Google Patents

Abstract

The utility model discloses an inertial volume type tuning vibration isolator which comprises a first sealing cover, a second sealing cover, a first spiral spring, a second spiral spring, a viscous damper, a first connecting plate and an inertial container, wherein one end of the viscous damper is fixed on the second sealing cover, the other end of the viscous damper is fixedly connected with the first connecting plate, two ends of the inertial container are respectively and fixedly connected with the second sealing cover and the first connecting plate, two ends of the second spiral spring are respectively abutted against the first sealing cover and the first connecting plate, and two ends of the first spiral spring are respectively abutted against the first sealing cover and the second sealing cover. The vibration isolator has the performance of a conventional vibration isolator, has a tuned mass damping effect after the inertia container is combined with the spring and the damper, has energy absorption efficiency far higher than that of the tuned mass damper due to the mass amplification effect of the inertia container, and can obtain a better vibration attenuation effect.

Description

Inertial volume type tuning vibration isolator

Technical Field

The utility model relates to the technical field of vibration reduction, in particular to an inertial volume type tuning vibration isolator.

Background

At present, with the development of science and technology and the modernization of industry. Many large and medium-sized mechanical devices and precision instruments are used in various industries. Excessive vibration can cause mechanical structure destruction, equipment damage, influence instrument normal work scheduling problem. Tuned mass damper, TMD for short, is a vibration system consisting of a spring, a mass block and a damper, which can control the vibration of a connection structure, the mechanism of which is: the structure generates vibration under the action of external excitation, and simultaneously drives the TMD system to vibrate, and the inertia force generated by the relative motion of the TMD system counteracts the structure, thereby playing a role in inhibiting the vibration of the connecting structure or equipment. The vibration damping performance of the tuned mass damper is greatly influenced by the mass of the mass block, the tuning frequency and other objective conditions, and the vibration damping capacity is limited.

However, the existing vibration isolator has the following defects:

the conventional vibration isolator is usually formed by combining a spring and various dampers, can avoid high-frequency vibration after rigidity adjustment, and simultaneously eliminates excessive vibration generated by resonance frequency by using the added dampers. The vibration isolator in the prior art can not effectively reduce the input of external energy, and the external vibration has great influence on instrument and equipment and poor damping effect.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model provides an inerter-tuned vibration isolator which can solve the problem of poor damping effect.

One of the purposes of the utility model is realized by adopting the following technical scheme:

the utility model provides a be used to harmonious isolator of appearance formula, includes first closing cap, second closing cap, first coil spring, second coil spring, viscous damper, first connecting plate, is used to the container, viscous damper one end is fixed in the second closing cap, the other end with first connecting plate fixed connection, be used to the both ends of container respectively with second closing cap, first connecting plate fixed connection, the both ends of second coil spring respectively with first closing cap first connecting plate is contradicted, the both ends of first coil spring respectively with first closing cap, second closing cap are contradicted.

Further, the sectional view of the first cover is n-shaped, and the sectional view of the second cover is U-shaped.

Further, the first cover comprises a first flat plate, the second cover comprises a second flat plate, and the first flat plate and the second flat plate are both circular.

Further, the first cover includes a first vertical wall, the second cover includes a second vertical wall, and the first coil spring is located between the first vertical wall and the second vertical wall.

Furthermore, the number of the viscous dampers is multiple, and the viscous dampers are distributed around the inertial container.

Further, the number of the viscous dampers is 5.

Furthermore, the first connecting plate is circular, and the inertial container is located at the circle center of the first connecting plate.

Further, the inerter is a ball screw type inerter.

Furthermore, it still includes the bolt to be used to harmonious isolator of appearance formula, be provided with the second connecting plate on the second closing cap, the second connecting plate pass through the bolt lock solid in the second closing cap, viscous damper, the tip of being used to the container all is fixed in the second connecting plate.

Further, the second connecting plate is circular.

Compared with the prior art, the utility model has the beneficial effects that:

viscous damper one end is fixed in the second closing cap, the other end with first connecting plate fixed connection, be used to the both ends of container respectively with second closing cap, first connecting plate fixed connection, the both ends of second coil spring respectively with first closing cap first connecting plate is contradicted, the both ends of first coil spring respectively with first closing cap, second closing cap are contradicted. The vibration isolator has the performance of a conventional vibration isolator, has a tuned mass damping effect after the inertia container is combined with the spring and the damper, has energy absorption efficiency far higher than that of the tuned mass damper due to the mass amplification effect of the inertia container, and can obtain a better vibration attenuation effect.

The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented in accordance with the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more clearly understood, the following preferred embodiments are described in detail with reference to the accompanying drawings.

Drawings

Figure 1 is an elevational view of a preferred embodiment of the inertially tuned isolator of the present invention;

figure 2 is a cross-sectional view of the inertance tuning vibration isolator illustrated in figure 1;

figure 3 is a cross-sectional view a-a of the inertance tuning vibration isolator illustrated in figure 1;

figure 4 is a cross-sectional view B-B of the inertance tuning isolator illustrated in figure 1;

figure 5 is a schematic diagram of the inertance-type tuned isolator illustrated in figure 1;

figure 6 is an installation position diagram of the inertance tuning isolator shown in figure 1;

figure 7 is another installed position view of the inertance tuning isolator illustrated in figure 1;

figure 8 is an amplitude-frequency diagram of the inertance tuning isolator shown in figure 1.

In the figure: 100. an inerter-tuned vibration isolator; 1. a first cover; 2. a second cover; 3. a first coil spring; 4. a second coil spring; 5. a viscous damper; 6. a first connecting plate; 7. a second connecting plate; 8. an inerter; 9. and (4) bolts.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that any combination of the embodiments or technical features described below can be used to form a new embodiment without conflict.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1-8, an inerter-tuned vibration isolator 100 includes a first sealing cap 1, a second sealing cap 2, a first spiral spring 3, a second spiral spring 4, a viscous damper 5, a first connecting plate 6, and an inerter 8, wherein one end of the viscous damper 5 is fixed to the second sealing cap 2, the other end of the viscous damper is fixedly connected to the first connecting plate 6, two ends of the inerter 8 are respectively fixedly connected to the second sealing cap 2 and the first connecting plate 6, two ends of the second spiral spring 4 are respectively abutted against the first sealing cap 1 and the first connecting plate 6, and two ends of the first spiral spring 3 are respectively abutted against the first sealing cap 1 and the second sealing cap 2. This application has possessed the performance of conventional isolator, has harmonious mass damping effect again because of being used to container 8 and spring and attenuator combination back, and because of being used to the mass amplification effect of container 8, its energy-absorbing efficiency will be far higher than harmonious mass damper, can obtain better damping effect.

Specifically, the manufacturing and installation are convenient, the cost is low, the application range is wide, and the practicability is high. During vibration isolation, the track does not need to be paved like a conventional tuned mass damper, so that the vibration isolator can be horizontally placed or vertically placed. The inertial container is a mass element with two-end acceleration, has a mass amplification effect, and can generate an inertial mass far larger than a self physical mass. The inertia container, the spring and the damper are combined to play a role in tuning mass damping, and the energy consumption efficiency is higher than that of a tuning mass damper due to the mass amplification effect.

The working principle is as follows: the apparatus can be used by mounting a building structure, precision instrument or device on the first cover 1. The equipment generates vibration under external excitation and reciprocates vertically along with the first spiral spring 3, and the self-vibration frequency of the equipment is reduced due to the relatively low rigidity of the first spiral spring 3, so that the transmission of high-frequency vibration energy upwards is reduced; in the vibration process, because the nut and the lead screw of the inertial container 8 convert the vertical relative motion of the equipment into the high-speed rotary motion of the flywheel of the inertial container, a larger inertial mass is generated, the relative motion of the inertial mass generates a larger inertial force counteracting on the equipment, and when the second spiral spring 4 is combined with the viscous damper 5, the damping coefficient is optimized.

Preferably, the first cover 1 has a cross-sectional shape of a pi, and the second cover 2 has a cross-sectional shape of a U. The first sealing cover 1 comprises a first flat plate, the second sealing cover 2 comprises a second flat plate, and the first flat plate and the second flat plate are both circular. The application can effectively reduce the input of external energy, and simultaneously can absorb and consume the vibration energy of the equipment, thereby effectively reducing the influence of external vibration on the instrument or the effect of the equipment on the environment.

Preferably, the first cover 1 comprises a first vertical wall, the second cover 2 comprises a second vertical wall, and the first coil spring 3 is located between the first vertical wall and the second vertical wall. The number of the viscous dampers 5 is multiple, and the viscous dampers 5 are distributed around the inerter 8 in a surrounding manner.

Specifically, in the present embodiment, the number of the viscous dampers 5 is 5. The first connecting plate 6 is circular, and the inerter 8 is positioned at the circle center of the first connecting plate 6. The inerter 8 is a ball screw inerter. The utility model can improve the stability of the whole structure.

Preferably, the inerter-type tuned vibration isolator further comprises a bolt 9, a second connecting plate 7 is arranged on the second sealing cover 2, the second connecting plate 7 is fixedly locked to the second sealing cover 2 through the bolt 9, and the viscous damper 5 and the end of the inerter 8 are fixed to the second connecting plate 7. The second connecting plate 7 is circular. Whole device compact structure, novel structure, design benefit, the suitability is strong, the facilitate promotion.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are within the protection scope of the present invention.

Claims (10)

1. The utility model provides a harmonious isolator of appearance formula of being used to, includes first closing cap, second closing cap, first coil spring, second coil spring, viscous damper, first connecting plate, is used to the container, its characterized in that:

viscous damper one end is fixed in the second closing cap, the other end with first connecting plate fixed connection, be used to the both ends of container respectively with second closing cap, first connecting plate fixed connection, the both ends of second coil spring respectively with first closing cap first connecting plate is contradicted, the both ends of first coil spring respectively with first closing cap, second closing cap are contradicted.

2. The inerter tuned isolator of claim 1, wherein: the sectional drawing of first closing cap is II type, and the sectional drawing of second closing cap is the U type.

3. The inerter tuned isolator of claim 1, wherein: the first sealing cover comprises a first flat plate, the second sealing cover comprises a second flat plate, and the first flat plate and the second flat plate are both circular.

4. The inerter tuned isolator of claim 1, wherein: the first cover includes a first vertical wall, the second cover includes a second vertical wall, and the first coil spring is located between the first vertical wall and the second vertical wall.

5. The inerter tuned isolator of claim 1, wherein: the number of viscous dampers is a plurality, and the viscous dampers are distributed around the inertial container.

6. The inerter tuned vibration isolator of claim 5, wherein: the number of the viscous dampers is 5.

7. The inerter tuned vibration isolator of claim 5, wherein: the first connecting plate is circular, and the inertial container is located at the circle center of the first connecting plate.

8. The inerter tuned isolator of claim 1, wherein: the inerter is a ball screw type inerter.

9. The inerter tuned isolator of claim 1, wherein: and the inerter-type tuned vibration isolator further comprises a bolt, a second connecting plate is arranged on the second sealing cover and is fixedly locked on the second sealing cover through the bolt, and the viscous damper and the end part of the inerter are fixed on the second connecting plate.

10. The inerter tuned vibration isolator of claim 9, wherein: the second connecting plate is circular.

Images