CN118310705A - Evaluation method and test device for vibration reduction and isolation effect of vibration reduction and isolation assembly - Google Patents

Abstract

The application provides an evaluation method and a test device for vibration reduction and isolation effects of a vibration reduction and isolation assembly, wherein the evaluation method for the vibration reduction and isolation effects of the vibration reduction and isolation assembly comprises the following steps: attaching and fixing the first rigid piece between the excitation assembly and the vibration reduction and isolation assembly, and attaching and fixing the second rigid piece on the vibration reduction and isolation assembly; mounting a first sensor on the first rigid member and a second sensor on the second rigid member; opening the excitation assembly; detecting the vibration condition of a first rigid piece by using a first sensor and obtaining a first vibration level, and detecting the vibration condition of a second rigid piece by using a second sensor and obtaining a second vibration level; analyzing the difference value of the first vibration level and the second vibration level to obtain the fall of the vibration level; and evaluating the vibration reduction and isolation effect of the vibration reduction and isolation assembly according to the vibration level drop. The technical scheme of the application effectively solves the problems that the proper vibration reduction and isolation assembly is difficult to select for vibration reduction and isolation in the related technology, so that the cost of the vibration reduction and isolation assembly is higher or the vibration isolation effect is poorer.

Description

Evaluation method and test device for vibration reduction and isolation effect of vibration reduction and isolation assembly

Technical Field

The invention relates to the field of vibration reduction and isolation effect test, in particular to an evaluation method and a test device for vibration reduction and isolation effect of a vibration reduction and isolation assembly.

Background

With the advancement of urban transformation, urban substations are more and more close to residential areas, and the noise disturbance problem caused by the urban substations is increasingly prominent. To reduce noise generated by vibration of the vibration source, the vibration source is typically disposed on a vibration reduction and isolation assembly to reduce the vibration transmitted from the vibration source to the ground, thereby reducing the generation of noise.

However, in the related art, no method for evaluating the vibration reduction and isolation effect of the vibration reduction and isolation assembly is provided, so that the specific vibration reduction and isolation effect of the vibration reduction and isolation assembly cannot be known. Therefore, the proper vibration reduction and isolation assembly is difficult to select for vibration reduction and isolation, and the problems of high cost of the vibration reduction and isolation assembly or poor vibration reduction and isolation effect are easily caused.

Disclosure of Invention

The invention mainly aims to provide an evaluation method and a test device for vibration reduction and isolation effects of a vibration reduction and isolation assembly, which are used for solving the problems that in the related art, proper vibration reduction and isolation assemblies are difficult to select for vibration reduction and isolation, so that the cost of the vibration reduction and isolation assembly is high or the vibration isolation effect is poor.

In order to achieve the above object, according to one aspect of the present invention, there is provided a method for evaluating vibration reduction and isolation effects of a vibration reduction and isolation assembly, comprising the steps of: attaching and fixing the first rigid piece between the excitation assembly and the vibration reduction and isolation assembly, and attaching and fixing the second rigid piece on the vibration reduction and isolation assembly; mounting a first sensor on the first rigid member and a second sensor on the second rigid member; opening the excitation assembly; detecting the vibration condition of a first rigid piece by using a first sensor and obtaining a first vibration level, and detecting the vibration condition of a second rigid piece by using a second sensor and obtaining a second vibration level; analyzing the difference value of the first vibration level and the second vibration level to obtain the fall of the vibration level; and evaluating the vibration reduction and isolation effect of the vibration reduction and isolation assembly according to the vibration level drop.

Further, the step of opening the excitation assembly includes: starting a vibration exciter of the vibration excitation assembly, inputting vibration parameters required according to different times into a control system of the vibration excitation assembly, and enabling an acceleration controller of the vibration excitation assembly to control acceleration parameters of the vibration exciter through the control system.

Further, the step of detecting the vibration condition of the first rigid member using the first sensor and obtaining the first vibration level, and detecting the vibration condition of the second rigid member using the second sensor and obtaining the second vibration level includes: detecting acceleration parameters of vibration of the first rigid part at different times by using a first sensor, obtaining a first time domain signal, and processing the first time domain signal to obtain a first frequency domain curve; calculating the first time domain signal and the first frequency domain curve to obtain the relation between the acceleration parameter of the vibration exciter and the first vibration level; detecting acceleration parameters of vibration of the second rigid part at different times by using a second sensor, obtaining a second time domain signal, and processing the second time domain signal to obtain a second frequency domain curve; and calculating the second time domain signal and the second frequency domain curve to obtain the relation between the acceleration parameter of the vibration exciter and the second vibration level.

Further, the step of analyzing the difference between the first vibration level and the second vibration level and obtaining the vibration level drop comprises the steps of: according to the acceleration parameters, the first vibration level and the second vibration level of the vibration exciter, the vibration level drop of the vibration reduction and isolation assembly under different acceleration parameters is calculated.

According to another aspect of the present invention, there is provided a test device for testing vibration reduction and isolation effects of a vibration reduction and isolation assembly using the above method for evaluating vibration reduction and isolation effects of a vibration reduction and isolation assembly, the test device comprising: the vibration excitation assembly is used for providing a vibration source for the vibration reduction and isolation assembly; the first rigid piece is connected with the excitation assembly; the second rigid piece is arranged at intervals with the first rigid piece, and the vibration reduction and isolation assembly is positioned between the first rigid piece and the second rigid piece; the signal acquisition assembly comprises a first sensor and a second sensor, wherein the first sensor detects the vibration condition of the first rigid piece, and the second sensor detects the vibration condition of the second rigid piece; the signal analysis component is in signal connection with the signal acquisition component.

Further, the first sensors and the second sensors are multiple, the first sensors and the second sensors are equal in number, the first sensors are installed on the first rigid piece at equal intervals, the second sensors are installed on the second rigid piece at equal intervals, and each first sensor is located on one side, facing the excitation assembly, of each second sensor.

Further, a vibration isolation groove is formed in the second rigid piece, and the second sensor is installed on one side, facing the vibration excitation assembly, of the vibration isolation groove.

Further, the testing device further comprises an installing table positioned between the first rigid piece and the second rigid piece, a blind hole is formed in the installing table and penetrates through one side, facing the second rigid piece, of the installing table, the vibration reduction and isolation assembly is arranged in the blind hole, one end of the vibration reduction and isolation assembly is connected with the bottom wall of the blind hole, and the other end of the vibration reduction and isolation assembly is connected with the second rigid piece.

Further, the testing device further comprises an embedded part arranged in the mounting table, wherein the embedded part is connected with the mounting table and the first rigid part, or is connected with the mounting table and the vibration reduction and isolation assembly.

Further, the vibration excitation assembly comprises a vibration exciter and a balancing weight arranged on the vibration exciter.

By applying the technical scheme of the application, the method for evaluating the vibration reduction and isolation effect of the vibration reduction and isolation assembly comprises the following steps: attaching and fixing the first rigid piece between the excitation assembly and the vibration reduction and isolation assembly, and attaching and fixing the second rigid piece on the vibration reduction and isolation assembly; mounting a first sensor on the first rigid member and a second sensor on the second rigid member; opening the excitation assembly; detecting the vibration condition of a first rigid piece by using a first sensor and obtaining a first vibration level, and detecting the vibration condition of a second rigid piece by using a second sensor and obtaining a second vibration level; analyzing the difference value of the first vibration level and the second vibration level to obtain the fall of the vibration level; and evaluating the vibration reduction and isolation effect of the vibration reduction and isolation assembly according to the vibration level drop. When the vibration excitation assembly is started, the vibration excitation assembly is used as a vibration source to drive the first rigid piece to vibrate, and vibration on the first rigid piece is transmitted to the second rigid piece after being subjected to vibration reduction and isolation by the vibration reduction and isolation assembly. The first sensor can obtain a first vibration level by detecting the vibration condition of the first rigid member, and the second sensor can obtain a second vibration level by detecting the vibration condition of the second rigid member. Through analyzing the difference of first vibration level and second vibration level and obtaining the vibration level fall, the obtained vibration level fall is convenient for to the evaluation of the vibration reduction and isolation effect of subtracting vibration isolation assembly, is convenient for learn the vibration reduction and isolation effect of subtracting vibration isolation assembly to can select suitable vibration reduction and isolation assembly to carry out vibration reduction and isolation, be convenient for balance the vibration reduction and isolation effect and the cost of subtracting vibration isolation assembly. Therefore, the technical scheme of the application effectively solves the problems that the proper vibration reduction and isolation assembly is difficult to select for vibration reduction and isolation in the related technology, so that the cost of the vibration reduction and isolation assembly is higher or the vibration isolation effect is poorer. And the setting of first rigidity spare is convenient for to the transmission of the produced vibration of vibration excitation subassembly, through the condition of knowing the produced vibration of vibration excitation subassembly more accurate to the detection of first vibration level for the evaluation to the vibration damping and isolation effect of vibration damping and isolation subassembly is more accurate.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application. In the drawings:

FIG. 1 is a flow chart of a method for evaluating vibration reduction and isolation effects of a vibration reduction and isolation assembly according to the present invention;

FIG. 2 shows a schematic front view of an embodiment of a testing device according to the invention;

FIG. 3 shows a schematic side view of the test apparatus of FIG. 2;

FIG. 4 shows a schematic perspective view of the testing device of FIG. 3 in a top view;

FIG. 5 shows a schematic front view of an excitation assembly of the test apparatus of FIG. 2;

Fig. 6 shows a schematic front view of the reactor of the test device of fig. 2 when arranged on a first rigid member;

Fig. 7 shows a schematic side view of the reactor of the test device of fig. 2 when arranged on a first rigid member;

fig. 8 shows a schematic top view of the reactor of the test device of fig. 2 when it is arranged on the first rigid part.

Wherein the above figures include the following reference numerals:

1. an excitation assembly; 11. a vibration exciter; 12. an acceleration controller; 13. a control system;

2. A first rigid member;

31. a vibration isolation assembly; 32. a mounting table; 33. an embedded part; 34. a blind hole;

4. a second rigid member;

5. A signal acquisition assembly; 51. a first sensor; 52. a signal acquisition instrument; 53. a signal acquisition and analysis system; 54. a second sensor;

6. A reactor.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless it is specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

As shown in fig. 1, the method for evaluating the vibration reduction and isolation effect of the vibration reduction and isolation assembly by applying the technical scheme of the embodiment comprises the following steps: attaching and fixing the first rigid part 2 between the excitation assembly 1 and the vibration reduction and isolation assembly 31, and attaching and fixing the second rigid part 4 on the vibration reduction and isolation assembly 31; the first sensor 51 is mounted on the first rigid part 2 and the second sensor 54 is mounted on the second rigid part 4; opening the excitation assembly 1; detecting the vibration condition of the first rigid member 2 by using the first sensor 51 and obtaining a first vibration level, and detecting the vibration condition of the second rigid member 4 by using the second sensor 54 and obtaining a second vibration level; analyzing the difference value of the first vibration level and the second vibration level to obtain the fall of the vibration level; the vibration reduction and isolation effect of the vibration reduction and isolation assembly 31 is evaluated according to the vibration level drop.

When the excitation assembly 1 is opened, the excitation assembly 1 serves as a vibration source to drive the first rigid member 2 to vibrate, and the vibration on the first rigid member 2 is transmitted to the second rigid member 4 after being subjected to vibration reduction and isolation by the vibration reduction and isolation assembly 31. The first sensor 51 can obtain a first vibration level by detecting the vibration condition of the first rigid member 2, and the second rigid member 4 can obtain a second vibration level by detecting the vibration condition of the second rigid member 4. Through analyzing the difference of first vibration level and second vibration level and obtaining the vibration level fall, the obtained vibration level fall is convenient for to the evaluation of the vibration reduction and isolation effect of subtracting vibration isolation assembly 31, is convenient for learn the vibration reduction and isolation effect of subtracting vibration isolation assembly 31 to can select suitable vibration reduction and isolation assembly 31 to carry out vibration reduction and isolation, be convenient for balance the vibration reduction and isolation effect and the cost of subtracting vibration isolation assembly 31. Therefore, the technical scheme of the embodiment effectively solves the problems that in the related technology, a proper vibration reduction and isolation assembly is difficult to select for vibration reduction and isolation, so that the cost of the vibration reduction and isolation assembly is high or the vibration isolation effect is poor.

Moreover, the first rigid member 2 is convenient for transmitting the vibration generated by the vibration excitation assembly 1, and the condition of the vibration generated by the vibration excitation assembly 1 can be known more accurately through the detection of the first vibration level, so that the vibration reduction and isolation effect of the vibration reduction and isolation assembly 31 is evaluated more accurately.

In this embodiment, the vibration level refers to the magnitude of the amplitude, and is used to describe the magnitude of the fluctuation and the intensity of the vibration.

As shown in fig. 1 to 8, the step of opening the excitation assembly 1 includes: the vibration exciter 11 of the vibration excitation assembly 1 is started, vibration parameters required according to different times are input into the control system 13 of the vibration excitation assembly 1, and the acceleration controller 12 of the vibration excitation assembly 1 controls the acceleration parameters of the vibration exciter 11 through the control system 13. The above arrangement enables the excitation assembly 1 to control the acceleration parameters of the exciter 11 through the control system 13 and the acceleration controller 12 under different vibration parameters. So as to obtain the level drop when different vibration parameters are input, so that the vibration reduction and isolation effect of the vibration reduction and isolation assembly 31 is evaluated more reliably, and the vibration reduction and isolation effect evaluation method of the vibration reduction and isolation assembly is further accurate.

In this embodiment, the excitation assembly 1 includes an exciter 11, an acceleration controller 12, and a control system 13, where the acceleration controller 12 is disposed on the exciter 11, and the control system 13 is in control connection with the acceleration controller 12. The acceleration controller 12 is disposed on the moving coil of the vibration exciter 11, and the acceleration controller 12 controls the acceleration of the moving coil to rotate so as to control the acceleration parameter and the vibration parameter of the vibration exciter 11. The acceleration time curve is input into the control system 13, so that the vibration exciter 11 can output the corresponding acceleration time curve in equal quantity or multiple times, and the output multiple of the acceleration time curve is set by the control system 13.

In other embodiments, the input to the control system 13 is an acceleration frequency domain curve to control the vibration of the exciter 11.

As shown in fig. 1 to 8, the step of detecting the vibration condition of the first rigid member 2 using the first sensor 51 and obtaining the first vibration level, and detecting the vibration condition of the second rigid member 4 using the second sensor 54 and obtaining the second vibration level includes: detecting acceleration parameters of vibration of the first rigid part 2 at different times by using the first sensor 51, obtaining a first time domain signal, and processing the first time domain signal to obtain a first frequency domain curve; calculating the first time domain signal and the first frequency domain curve to obtain the relation between the acceleration parameter of the vibration exciter 11 and the first vibration level; detecting acceleration parameters of vibration of the second rigid part 4 at different times by using the second sensor 54, obtaining a second time domain signal, and processing the second time domain signal to obtain a second frequency domain curve; and calculating the second time domain signal and the second frequency domain curve to obtain the relation between the acceleration parameter of the vibration exciter 11 and the second vibration level. Through the steps, the first vibration level and the second vibration level corresponding to the vibration exciter 11 can be obtained according to the acceleration parameters of different vibration exciters, and the calculation and analysis of the drop of the subsequent vibration level are facilitated. In this embodiment, the above steps are processed by MATLAB computer software. The first time domain signal is subjected to Fourier transform to obtain a first frequency domain curve, and the second time domain signal is subjected to Fourier transform to obtain a second frequency domain curve.

In the present embodiment, the transmission rate curve and the vibration damping rate curve of the vibration damping/isolating module 31 can be obtained by calculating the first frequency domain curve and the second frequency domain curve. By performing the acceleration vibration level calculation on the first time domain signal and the second time domain signal, the total vibration level on the first rigid member 2, the vibration reduction and isolation assembly 31 and the second rigid member 4 can be obtained, and further, the vibration level drop and the vibration reduction rate can be obtained for evaluating the vibration reduction effect.

As shown in fig. 1 to 8, the step of analyzing the difference between the first vibration level and the second vibration level and obtaining the vibration level drop includes: according to the acceleration parameters, the first vibration level and the second vibration level of the vibration exciter 11, the vibration level drop of the vibration reduction and isolation assembly 31 under different acceleration parameters is calculated. Through the steps, the vibration level drop is obtained more conveniently and more accurately. In this embodiment, the MATLAB computer software is used to obtain the first vibration level for the vibration conditions detected by the first sensor 51 under the condition of the acceleration parameters of the different vibration exciters 11, where the unit of the first vibration level is decibel. And obtaining a second vibration level in decibels for the vibration conditions detected by the second sensor 54 under the condition of acceleration parameters of different vibration exciters 11 through MATLAB computer software. The vibration level fall is the difference value obtained by subtracting the second vibration level from the first vibration level.

In this embodiment, between the steps of starting the vibration excitation assembly 1 and detecting the vibration condition of the first rigid member 2 by using the first sensor 51 to obtain the first vibration level, and detecting the vibration condition of the second rigid member 4 by using the second sensor 54 to obtain the second vibration level, the method for evaluating the vibration reduction and isolation effect of the vibration reduction and isolation assembly further includes: and (3) system debugging: parameters of the signal acquisition assembly 5 are set, the pre-acquisition of signals of acceleration parameters of the vibration exciter 11 is carried out, and the signal acquisition assembly 5, the signal analysis assembly, the first sensor 51 and the second sensor 54 can work normally.

The application also provides a testing device, which adopts the method for evaluating the vibration reduction and isolation effect of the vibration reduction and isolation assembly to test the vibration reduction and isolation effect of the vibration reduction and isolation assembly 31, and comprises: the vibration excitation assembly 1, the first rigid piece 2, the second rigid piece 4, the signal acquisition assembly 5 and the signal analysis assembly. The excitation assembly 1 is used to provide a source of vibration to the vibration reduction and isolation assembly 31. The first rigid member 2 is connected to the excitation assembly 1. The second rigid member 4 is spaced from the first rigid member 2, and the vibration damping and isolation assembly 31 is located between the first rigid member 2 and the second rigid member 4. The signal acquisition assembly 5 comprises a first sensor 51 and a second sensor 54. The first sensor 51 detects the vibration of the first rigid member 2 and the second sensor 54 detects the vibration of the second rigid member 4. The signal analysis component is in signal connection with the signal acquisition component 5. When the excitation assembly 1 is opened, the excitation assembly 1 serves as a vibration source to drive the first rigid member 2 to vibrate, and the vibration on the first rigid member 2 is transmitted to the second rigid member 4 after being subjected to vibration reduction and isolation by the vibration reduction and isolation assembly 31. The first sensor 51 can obtain a first vibration level by detecting the vibration condition of the first rigid member 2, and the second rigid member 4 can obtain a second vibration level by detecting the vibration condition of the second rigid member 4. The difference between the first vibration level and the second vibration level is conveniently obtained, the drop of the vibration level is conveniently evaluated on the vibration reduction and isolation effect of the vibration reduction and isolation assembly 31, the vibration reduction and isolation effect of the vibration reduction and isolation assembly 31 is conveniently known, the vibration reduction and isolation can be conveniently carried out by selecting a proper vibration reduction and isolation assembly 31, and the vibration reduction and isolation effect and cost of the vibration reduction and isolation assembly 31 are conveniently balanced. Moreover, the first rigid member 2 is convenient for transmitting the vibration generated by the vibration excitation assembly 1, and the condition of the vibration generated by the vibration excitation assembly 1 can be known more accurately through the detection of the first vibration level, so that the vibration reduction and isolation effect of the vibration reduction and isolation assembly 31 is evaluated more accurately.

The method for evaluating the vibration reduction and isolation effect of the vibration reduction and isolation assembly can solve the problems that in the related art, a proper vibration reduction and isolation assembly is difficult to select for vibration reduction and isolation, so that the cost of the vibration reduction and isolation assembly is high or the vibration isolation effect is poor, and the test device using the method for evaluating the vibration reduction and isolation effect of the vibration reduction and isolation assembly can solve the same technical problems.

As shown in fig. 1 to 8, the first sensor 51 and the second sensor 54 are each plural, and the number of the first sensor 51 and the second sensor 54 is equal. The plurality of first sensors 51 are mounted on the first rigid member 2 at equal intervals, and the plurality of second sensors 54 are mounted on the second rigid member 4 at equal intervals. This arrangement allows the first sensor 51 to detect the vibration of the first rigid element 2 more accurately and the second sensor 54 to detect the vibration of the second rigid element 4 more accurately. And each first sensor 51 is located on the side, facing the excitation assembly 1, of each second sensor 54 in a uniform and corresponding manner, so that the correspondence between each first sensor 51 and each second sensor 54 is more reasonable, and the difference between the first vibration level measured by each first sensor 51 and the second vibration level measured by each corresponding second sensor 54 is more accurate.

In the present embodiment, the first sensor 51 and the second sensor 54 are each six,

As shown in fig. 1 to 8, the second rigid member 4 is provided with a vibration isolation groove, and the second sensor 54 is mounted on a side of the vibration isolation groove facing the excitation assembly 1. The vibration isolation groove can isolate vibration interference outside the vibration isolation groove, and vibration loss in the vibration isolation groove is reduced, so that the second sensor 54 can detect the vibration condition of the second rigid part 4 more accurately.

As shown in fig. 1 to 8, the testing device further comprises a mounting table 32 between the first rigid member 2 and the second rigid member 4. The mounting table 32 is provided with a blind hole 34, the blind hole 34 penetrates through one side of the mounting table 32 facing the second rigid member 4, and the vibration reduction and isolation assembly 31 is arranged in the blind hole 34. One end of the vibration reduction and isolation assembly 31 is connected with the bottom wall of the blind hole 34, and the other end of the vibration reduction and isolation assembly 31 is connected with the second rigid member 4. The mounting table 32 is provided to facilitate connection of the vibration isolation assembly 31 to the first and second rigid members 2, 4. The provision of the blind bore 34 facilitates the installation of the vibration isolation assembly 31 within the mounting table 32. And, the arrangement of the blind holes 34 enables the vibration reduction and isolation assembly 31 to support the mounting table 32 and the first rigid member 2 on the second rigid member 4, so that errors in the process of transmitting the vibration of the excitation assembly 1 to the second rigid member 4 are reduced.

As shown in fig. 1 to 8, the test device further includes an embedded part 33 disposed in the mounting table 32, and the embedded part 33 connects the mounting table 32 with the first rigid part 2. The arrangement of the embedded part 33 enables the connection between the mounting table 32 and the first rigid part 2 to be more convenient and reliable, and reduces errors in the process of transmitting the vibration of the excitation assembly 1 to the second rigid part 4.

In other embodiments, the testing device further includes an embedded part 33 disposed in the mounting table 32, and the embedded part 33 connects the mounting table 32 with the vibration reduction and isolation assembly 31.

As shown in fig. 1 to 8, the excitation assembly 1 includes an exciter 11 and a weight provided on the exciter 11. The weight block is convenient to adjust the weight of the excitation assembly 1.

In the present embodiment, the vibration reducing and isolating assembly 31 is used to reduce the vibration of the reactor 6, and in the test of the vibration reducing and isolating effect of the vibration reducing and isolating assembly 31, the excitation assembly 1 is used to simulate the vibration characteristics of the reactor 6 and serve as a vibration source. In actual use of the reactor 6, the reactor 6 is arranged on the first rigid part 2. According to the actual weight of the reactor 6, the balancing weight on the vibration exciter 11 is adjusted, so that the weight of the vibration exciting assembly 1 can be matched with the weight of the reactor 6, and the vibration reducing and isolating effect of the vibration reducing and isolating assembly 31 can be tested more accurately. The excitation assembly 1 can simulate the vibration in the frequency range from 2Hz to 2500Hz, the maximum excitation acceleration can reach 100g, and the maximum excitation force can reach 50kN.

In this embodiment, the second rigid member 4 is a ground or concrete body. The second rigid member 4 is provided with a T-shaped groove, and the vibration damping and isolation assembly 31 is connected with the T-shaped groove by bolts. The vibration damping and isolation assembly 31 is disposed at an intermediate position of the first rigid member 2. The first sensor 51 and the second sensor 54 are both measuring acceleration sensors. The signal acquisition component 5 comprises a measuring acceleration sensor, a signal acquisition instrument 52 and a signal acquisition analysis system 53, which are connected through a data line and a network cable and are used for acquiring and processing acceleration signals.

At present, the existing test methods for the vibration noise of the reactor 6 are all test noise for the self vibration of the reactor 6, and the test results are used for guiding the design and maintenance of the reactor 6, but the test method for the vibration isolation measure of the reactor 6 is still in a development stage, and the test method for the vibration isolation system is not unified, so that the vibration reduction and isolation performance of the vibration isolation system of the reactor 6 cannot be systematically evaluated. By applying the technical scheme of the embodiment, the vertical vibration reduction and isolation effect of the vibration reduction and isolation assembly 31 can be effectively evaluated, and the application effect of the vibration reduction and isolation assembly 31 can be rapidly and effectively evaluated.

By applying the technical scheme of the embodiment, the indoor test can be performed, the vibration reduction and isolation effect can be evaluated, the electric shock risk is avoided, and the method is safer than the field test. The indoor test is convenient to install and detach, the multi-working-condition rapid simulation is convenient to conduct, and the test efficiency is improved.

Preferably, vibration reducing and isolating assembly 31 is a rubber pad, a steel spring isolator, or a nonlinear isolator.

In the description of the present invention, it should be understood that the azimuth or positional relationships indicated by the azimuth terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal", and "top, bottom", etc., are generally based on the azimuth or positional relationships shown in the drawings, merely to facilitate description of the present invention and simplify the description, and these azimuth terms do not indicate and imply that the apparatus or elements referred to must have a specific azimuth or be constructed and operated in a specific azimuth, and thus should not be construed as limiting the scope of protection of the present invention; the orientation word "inner and outer" refers to inner and outer relative to the contour of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "upper surface on … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

In addition, the terms "first", "second", etc. are used to define the components, and are only for convenience of distinguishing the corresponding components, and the terms have no special meaning unless otherwise stated, and therefore should not be construed as limiting the scope of the present invention.

The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. The method for evaluating the vibration reduction and isolation effect of the vibration reduction and isolation assembly is characterized by comprising the following steps of:

Attaching and fixing the first rigid piece (2) between the excitation assembly (1) and the vibration reduction and isolation assembly (31), and attaching and fixing the second rigid piece (4) on the vibration reduction and isolation assembly (31);

-mounting a first sensor (51) on the first rigid element (2) and a second sensor (54) on the second rigid element (4);

opening the excitation assembly (1);

Detecting the vibration condition of the first rigid part (2) by using a first sensor (51) and obtaining a first vibration level, and detecting the vibration condition of the second rigid part (4) by using a second sensor (54) and obtaining a second vibration level;

Analyzing the difference value of the first vibration level and the second vibration level and obtaining the fall of the vibration level;

And evaluating the vibration reduction and isolation effect of the vibration reduction and isolation assembly according to the vibration level drop.

2. The method of evaluating the vibration reduction and isolation effect of the vibration reduction and isolation assembly according to claim 1, wherein the step of opening the excitation assembly (1) includes:

starting a vibration exciter (11) of the vibration excitation assembly (1), inputting vibration parameters required according to different times into a control system (13) of the vibration excitation assembly (1), and enabling an acceleration controller (12) of the vibration excitation assembly (1) to control the acceleration parameters of the vibration exciter (11) through the control system (13).

3. The method for evaluating the vibration reduction and isolation effect of the vibration reduction and isolation assembly according to claim 2, wherein the step of detecting the vibration condition of the first rigid member (2) using the first sensor (51) and obtaining the first vibration level and detecting the vibration condition of the second rigid member (4) using the second sensor (54) and obtaining the second vibration level includes:

Detecting acceleration parameters of vibration of the first rigid part (2) at different times by using the first sensor (51) and obtaining a first time domain signal, and processing the first time domain signal to obtain a first frequency domain curve;

Calculating the first time domain signal and the first frequency domain curve to obtain the relation between the acceleration parameter of the vibration exciter (11) and the first vibration level;

Detecting acceleration parameters of vibration of the second rigid part (4) at different times by using the second sensor (54) and obtaining a second time domain signal, and processing the second time domain signal to obtain a second frequency domain curve;

And calculating the second time domain signal and the second frequency domain curve to obtain the relation between the acceleration parameter of the vibration exciter (11) and the second vibration level.

4. A method of evaluating the vibration reduction and isolation effect of a vibration reduction and isolation assembly according to claim 3, wherein the step of analyzing the difference between the first vibration level and the second vibration level and obtaining the vibration level drop comprises:

according to the acceleration parameters of the vibration exciter (11), the first vibration level and the second vibration level, the vibration level drop of the vibration reduction and isolation assembly (31) under different acceleration parameters is calculated.

5. A test device for testing the vibration reduction effect of the vibration reduction assembly using the method for evaluating the vibration reduction effect of the vibration reduction assembly according to any one of claims 1 to 4, the test device comprising:

an excitation assembly (1) for providing a vibration source for the vibration reduction and isolation assembly (31);

A first rigid member (2) connected to the excitation assembly (1);

a second rigid member (4) spaced from the first rigid member (2), the vibration isolation assembly (31) being located between the first rigid member (2) and the second rigid member (4);

The signal acquisition assembly (5) comprises a first sensor (51) and a second sensor (54), wherein the first sensor (51) detects the vibration condition of the first rigid part (2), and the second sensor (54) detects the vibration condition of the second rigid part (4);

and the signal analysis component is in signal connection with the signal acquisition component (5).

6. The test device according to claim 5, wherein the first sensors (51) and the second sensors (54) are plural, and the first sensors (51) and the second sensors (54) are equal in number, the first sensors (51) are equally spaced apart on the first rigid member (2), the second sensors (54) are equally spaced apart on the second rigid member (4), and each of the first sensors (51) is located on a side of each of the second sensors (54) facing the excitation assembly (1).

7. The test device according to claim 5, characterized in that the second rigid member (4) is provided with a vibration isolation groove, and the second sensor (54) is mounted on the side of the vibration isolation groove facing the excitation assembly (1).

8. The testing device according to claim 5, further comprising a mounting table (32) between the first rigid member (2) and the second rigid member (4), wherein a blind hole (34) is provided in the mounting table (32), the blind hole (34) penetrates through the mounting table (32) towards one side of the second rigid member (4), the vibration reduction and isolation assembly (31) is arranged in the blind hole (34), one end of the vibration reduction and isolation assembly (31) is connected with the bottom wall of the blind hole (34), and the other end of the vibration reduction and isolation assembly (31) is connected with the second rigid member (4).

9. The test device according to claim 8, further comprising an embedded part (33) arranged in the mounting table (32), the embedded part (33) connecting the mounting table (32) with the first rigid part (2), or the embedded part (33) connecting the mounting table (32) with the vibration isolation assembly (31).

10. The test device according to claim 5, characterized in that the excitation assembly (1) comprises an exciter (11) and a balancing weight arranged on the exciter (11).