Dynamic vibration absorber

Abstract

The utility model relates to the technical field of vibration reduction, in particular to a dynamic vibration absorber which comprises a fixing assembly which can be fixedly arranged on a pipeline in a sleeving mode. The elastic damping assemblies are arranged on the outer side of the fixing assembly at intervals in the circumferential direction of the fixing assembly, and the elastic damping assemblies are detachably connected with the fixing assembly; and the counterweight assembly is arranged on the fixing assembly in a sleeving manner, and the counterweight assembly is detachably connected with the elastic damping assembly. The vibration of the pipeline can be reduced, so that the noise is reduced, and the influence on the working state of personnel is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of vibration damping, in particular to a dynamic vibration absorber. Background Art

[0002] As the command center for the operation of the entire nuclear power plant, the main control room area of the nuclear power plant requires staff to work in the main control room for 24 hours. Temperature, humidity, noise, etc. in the main control room area are important indicators for human perception and have an important impact on the working environment. A good working environment is a necessary condition for ensuring the efficient work of personnel. Temperature and humidity can often be well controlled through the ventilation system. Regarding the noise problem, if there are defects in the pipelines during the design stage in the main control room area of the nuclear power plant, it is very easy to generate noise due to vibration. Once the noise exceeds the standard, it will be very difficult to improve it during the subsequent operation process, affecting the working state and communication of the operating personnel.

[0003] Therefore, a dynamic vibration absorber is needed to solve the above problems. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a dynamic vibration absorber, which can reduce pipeline vibration, thereby reducing noise and the impact on the working state of personnel.

[0005] To achieve the above object, the utility model adopts the following technical solutions:

[0006] A dynamic vibration absorber, comprising:

[0007] A fixing component, which can be fixedly sleeved on the pipeline;

[0008] An elastic damping component, which is arranged at intervals along the circumferential direction of the fixing component on the outside of the fixing component, and the elastic damping component is detachably connected to the fixing component;

[0009] A counterweight component, which is sleeved on the fixing component, and the counterweight component is detachably connected to the elastic damping component.

[0010] Further, the fixing component includes a plurality of connecting pieces, and the plurality of connecting pieces enclose to form a ring shape, and adjacent connecting pieces are connected by a first fastener.

[0011] Further, both ends of the connecting piece have first connecting ear plates, and a first connecting hole is opened on the first connecting ear plates, and the first fastener passes through the first connecting holes of two adjacent first connecting ear plates.

[0012] Further, the elastic damping component includes a second fastener, a damping elastic member and a fixing plate arranged from the inside to the outside, and the second fastener passes through the fixing plate and the damping elastic member to be connected with the connecting piece.

[0013] Further, a plurality of mounting holes are formed in the connecting piece, a plurality of the second fasteners are provided, and the plurality of second fasteners are arranged in one-to-one correspondence with the plurality of mounting holes.

[0014] Further, the fixing plate is in a T shape and includes a first mounting portion and a second mounting portion connected to each other. The first mounting portion is connected to the connecting piece through the second fastener, and the weight component is connected to the second mounting portion.

[0015] Further, a second connecting hole is formed in the second mounting portion, and a third fastener is inserted through the weight component and the second connecting hole.

[0016] Further, it further includes a mounting plate. The mounting plate is located between the damping elastic member and the connecting piece, and the second fastener sequentially passes through the fixing plate, the damping elastic member and the mounting plate to be connected with the connecting piece.

[0017] Further, the weight component includes a plurality of weight plates. The plurality of weight plates are arranged to form a ring, and adjacent weight plates are connected through a fourth fastener. The weight plate is connected to the fixing plate.

[0018] Further, both ends of the weight plate have second connecting lugs, and a third connecting hole is formed in the second connecting lugs. The fourth fastener is inserted through the third connecting holes of two adjacent second connecting lugs.

[0019] Advantages of the present utility model:

[0020] For the dynamic vibration absorber provided by the present utility model, the fixing component can be fixedly sleeved on the pipeline. The elastic damping components are arranged at intervals along the circumferential direction of the fixing component on the outside of the fixing component, and the elastic damping components are detachably connected to the fixing component. The weight component is sleeved on the fixing component, and the weight component is detachably connected to the elastic damping component. The fixing component is fixedly sleeved on the pipeline with large noise generated by vibration, and the corresponding elastic damping components and weight components are configured according to the vibration frequency of the pipeline. The elastic damping components and the weight components are used in cooperation to cancel and absorb the vibration energy of the pipeline, thereby reducing the vibration of the pipeline, achieving the effect of reducing the noise caused by the vibration of the pipeline, further reducing the impact on the working state of personnel, and ensuring the comfort of the working environment of the staff. Description of the drawings

[0021] To more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for description in the embodiments of the present utility model. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to the content of the embodiments of the present utility model and these drawings.

[0022] Figure 1 is a schematic diagram of a dynamic vibration absorber of the present utility model;

[0023] Figure 2 is a schematic diagram of some fixing components and elastic damping components in a dynamic vibration absorber of the present utility model;

[0024] Figure 3 is another schematic diagram of some fixing components and elastic damping components in a dynamic vibration absorber of the present utility model.

[0025] In the figure:

[0026] 100, pipeline; 1, fixing component; 11, connecting piece; 111, first connecting ear plate; 12, first fastener; 2, elastic damping component; 21, second fastener; 22, fixing plate; 221, first installation part; 222, second installation part; 23, damping elastic member; 24, installation plate; 3, counterweight component; 31, counterweight plate; 311, second connecting ear plate; 32, third fastener; 33, positioning hole; 34, fourth fastener. Detailed implementation manners

[0027] Before explaining any embodiment of the present application in detail, it should be understood that the present application is not limited to the structural details and component arrangements described in the following description or shown in the above drawings.

[0028] In the present application, the terms "comprising", "including", "having" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the phrase "including one..." does not exclude the presence of additional identical elements in the process, method, article or device including that element.

[0029] In this application, the terms "connected", "combined", "coupled", and "installed" can be direct connections, combinations, couplings, or installations, or indirect connections, combinations, couplings, or installations. For example, a direct connection means that two parts or components are connected together without an intermediate member, and an indirect connection means that two parts or components are respectively connected to at least one intermediate member, and these two parts or components are connected through the intermediate member. In addition, "connected" and "coupled" are not limited to physical or mechanical connections or couplings, and may include electrical connections or couplings.

[0030] In this application, those of ordinary skill in the art will understand that the functions performed by a component can be performed by one component, multiple components, one part, or multiple parts. Similarly, the functions performed by a part can also be performed by one part, one component, or a combination of multiple parts.

[0031] In this application, the orientation terms such as "upper", "lower", "left", "right", "front", and "back" are described based on the orientation and positional relationship shown in the drawings, and should not be construed as a limitation on the embodiments of this application. In addition, in the context, it should also be understood that when it is mentioned that one element is connected "above" or "below" another element, it can not only be directly connected "above" or "below" another element, but also be indirectly connected "above" or "below" another element through an intermediate element. It should also be understood that the orientation terms such as the upper side, the lower side, the left side, the right side, the front side, and the back side not only represent the positive orientation, but can also be understood as the side orientation. For example, the lower side can include directly below, lower left, lower right, lower front, and lower back, etc.

[0032] During the operation of a nuclear power plant, in order to ensure a suitable working environment for office work and reduce the noise in the working area, thereby reducing the impact on the working state of personnel, as Figures 1 - 3 shown, the present utility model provides a dynamic vibration absorber. The dynamic vibration absorber includes a fixing component 1, an elastic damping component 2, and a counterweight component 3.

[0033] Among them, the fixing component 1 can be fixedly sleeved on the pipeline 100. The elastic damping component 2 is arranged at intervals along the circumferential direction of the fixing component 1 on the outside of the fixing component 1, and the elastic damping component 2 is detachably connected to the fixing component 1. The counterweight component 3 is sleeved on the fixing component 1, and the counterweight component 3 is detachably connected to the elastic damping component 2.

[0034] A fixing assembly 1 is fixedly sleeved on a pipeline 100 that generates relatively large vibration noise. An elastic damping assembly 2 and a counterweight assembly 3 are configured according to the vibration frequency of the pipeline 100. The elastic damping assembly 2 and the counterweight assembly 3 cooperate to cancel and absorb the vibration energy of the pipeline 100, thereby reducing the vibration of the pipeline 100, achieving the effect of reducing the noise caused by the vibration of the pipeline 100, and further reducing the impact on the working state of personnel and ensuring a comfortable working environment for the staff.

[0035] Furthermore, the fixing assembly 1 includes a plurality of connecting pieces 11. The plurality of connecting pieces 11 surround to form a ring shape, and adjacent connecting pieces 11 are connected by a first fastener 12. Specifically, in this embodiment, four connecting pieces 11 are provided, and the four connecting pieces 11 surround to form a ring shape and are then connected by the first fastener 12. By adopting the above method, it is convenient to adjust the fixing assembly 1 according to the diameter of the pipeline 100, and it is also convenient to disassemble, install and displace on the pipeline 100, reducing the construction difficulty. In other embodiments, the number of connecting pieces 11 can be selected according to actual needs, and no excessive limitation is made here.

[0036] Furthermore, both ends of the connecting piece 11 have first connecting ear plates 111, and first connecting holes are formed in the first connecting ear plates 111. The first fastener 12 is inserted into the first connecting holes of two adjacent first connecting ear plates 111. Specifically, the first fastener 12 can adopt a bolt. The adjacent first connecting ear plates 111 are connected by the first fastener 12, thereby realizing the connection of adjacent connecting pieces 11. By adjusting the first fastener 12, the diameter of the fixing assembly 1 can be adjusted, so as to adapt to pipelines 100 with different diameters and improve the flexibility of use of this dynamic vibration absorber.

[0037] Furthermore, the elastic damping assembly 2 includes a second fastener 21, and a damping elastic member 23 and a fixing plate 22 arranged from the inside to the outside. The second fastener 21 passes through the fixing plate 22 and the damping elastic member 23 and is connected to the connecting piece 11. By providing the damping elastic member 23, it can play a role in damping when the pipeline 100 vibrates, and at the same time, the vibration of the pipeline 100 can be attenuated, thereby reducing the noise generated by the vibration of the pipeline 100 and improving the comfort of the working environment of the staff.

[0038] Furthermore, a plurality of mounting holes are formed in the connecting piece 11, and a plurality of second fasteners 21 are provided. The plurality of second fasteners 21 are arranged in one-to-one correspondence with the plurality of mounting holes. The cooperation of the second fastener 21 and the mounting hole can detachably connect the fixing plate 22 and the damping elastic member 23 to the connecting piece 11. Moreover, by adopting the above method, it can be ensured that the fixing plate 22 and the damping elastic member 23 can be stably connected to the connecting piece 11.

[0039] Further, the dynamic vibration absorber further includes a mounting plate 24, which is located between the damping elastic member 23 and the connecting piece 11. The second fastener 21 sequentially passes through the fixing plate 22, the damping elastic member 23 and the mounting plate 24 and is connected to the connecting piece 11. By providing the mounting plate 24, it is convenient to position and install the elastic damping member.

[0040] Further, the fixing plate 22 is in a T shape. The fixing plate 22 includes a first mounting portion 221 and a second mounting portion 222 that are connected to each other. The first mounting portion 221 is connected to the connecting piece 11 through the second fastener 21, and the counterweight assembly 3 is connected to the second mounting portion 222. Specifically, the second mounting portion 222 is in a vertical shape. By providing the fixing plate 22, it is convenient to install the counterweight assembly 3.

[0041] Further, a second connection hole is formed in the second mounting portion 222. The third fastener 32 is inserted through the counterweight plate 31 of the counterweight assembly 3 and the second connection hole. By matching the third fastener 32 with the second connection hole, the installation of the counterweight assembly 3 on the fixing plate 22 is realized. Moreover, since the counterweight assembly 3 is detachably connected to the second mounting portion 222 of the fixing plate 22, counterweight assemblies 3 of different weights can be replaced according to the vibration frequency of the pipeline 100, so as to adapt to pipelines 100 with different vibration frequencies and achieve a good vibration reduction effect.

[0042] Further, the counterweight assembly 3 includes a plurality of counterweight plates 31. The plurality of counterweight plates 31 are arranged to form a ring shape. Adjacent counterweight plates 31 are connected by a fourth fastener 34, and the counterweight plates 31 are connected to the fixing plate 22. Specifically, a plurality of positioning holes 33 are formed at intervals on the counterweight plate 31. The positioning holes 33 can be opposite to the second connection holes on the fixing plate 22. The third fastener 32 is inserted through the positioning holes 33 and the second connection holes, so as to fix the counterweight plate 31 on the fixing plate 22. Moreover, by connecting a plurality of counterweight plates 31 through the fourth fastener 34, the diameter of the counterweight assembly 3 can be adjusted according to needs, so that the counterweight assembly 3 can adapt to pipelines 100 with different diameters.

[0043] Further, both ends of the counterweight plate 31 have second connecting lugs 311. A third connection hole is formed in the second connecting lugs 311. The fourth fastener 34 is inserted through the third connection holes of two adjacent second connecting lugs 311. Through the above settings, it is convenient to assemble the counterweight plates 31, and the distance between two adjacent counterweight plates 31 can be adjusted by adjusting the fourth fastener 34, so as to adapt to pipelines 100 with different diameters. By adopting the above method, it is convenient to disassemble and assemble the counterweight assembly 3.

[0044] Obviously, the above embodiments of the present utility model are merely examples for clearly illustrating the present utility model, rather than limitations on the implementation manners of the present utility model. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to enumerate all the implementation manners here. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the claims of the present utility model.

Claims

1. A dynamic vibration absorber, characterized in that: include: A fixing component (1), wherein the fixing component (1) can be fixedly sleeved on the pipeline (100); An elastic damping component (2), the elastic damping component (2) being arranged at intervals along the circumference of the fixing component (1) on the outside of the fixing component (1), and the elastic damping component (2) and the fixing component (1) being detachably connected; A counterweight component (3), wherein the counterweight component (3) is sleeved on the fixing component (1), and the counterweight component (3) is detachably connected to the elastic damping component (2).

2. The dynamic vibration absorber according to claim 1, characterized in that: The fixing assembly (1) comprises a plurality of connecting plates (11), wherein the plurality of connecting plates (11) are arranged in a ring shape, and adjacent connecting plates (11) are connected via a first fastener (12).

3. The dynamic vibration absorber according to claim 2, characterized in that: The two ends of the connecting piece (11) are provided with first connecting ear plates (111), the first connecting ear plates (111) are provided with first connecting holes, and the first fastener (12) is inserted into the first connecting holes of two adjacent first connecting ear plates (111).

4. The dynamic vibration absorber according to claim 2, characterized in that: The elastic damping component (2) comprises a second fastener (21) and a damping elastic member (23) and a fixing plate (22) arranged from the inside to the outside, wherein the second fastener (21) passes through the fixing plate (22) and the damping elastic member (23) to be connected to the connecting plate (11).

5. The dynamic vibration absorber according to claim 4, characterized in that: The connecting piece (11) is provided with a plurality of mounting holes, a plurality of the second fasteners (21) are provided, and the plurality of the second fasteners (21) are provided in a one-to-one correspondence with the plurality of the mounting holes.

6. The dynamic vibration absorber according to claim 4, characterized in that: The fixing plate (22) is T-shaped and comprises a first mounting portion (221) and a second mounting portion (222) which are connected to each other; the first mounting portion (221) is connected to the connecting plate (11) via the second fastener (21); and the counterweight assembly (3) is connected to the second mounting portion (222).

7. The dynamic vibration absorber according to claim 6, characterized in that: The second mounting portion (222) is provided with a second connection hole, and a third fastener (32) is inserted through the counterweight assembly (3) and the second connection hole.

8. The dynamic vibration absorber according to claim 4, characterized in that: It also includes a mounting plate (24), wherein the mounting plate (24) is located between the damping elastic member (23) and the connecting plate (11), and the second fastener (21) passes through the fixing plate (22), the damping elastic member (23) and the mounting plate (24) in sequence to be connected to the connecting plate (11).

9. The dynamic vibration absorber according to claim 4, characterized in that: The counterweight assembly (3) comprises a plurality of counterweight plates (31), the plurality of counterweight plates (31) are arranged in a ring shape, adjacent counterweight plates (31) are connected via a fourth fastener (34), and the counterweight plates (31) are connected to the fixing plate (22).

10. The dynamic vibration absorber according to claim 9, characterized in that: The counterweight plate (31) has second connecting ear plates (311) at both ends, and a third connecting hole is provided on the second connecting ear plates (311). The fourth fastener (34) is inserted into the third connecting holes of two adjacent second connecting ear plates (311).

Images