WO2023071321A1

WO2023071321A1 - Damping assembly and vibration device provided with same

Info

Publication number: WO2023071321A1
Application number: PCT/CN2022/107450
Authority: WO
Inventors: 马列
Original assignee: 广东美的制冷设备有限公司; 美的集团股份有限公司
Priority date: 2021-10-29
Filing date: 2022-07-22
Publication date: 2023-05-04

Abstract

A damping assembly (100) and a vibration device (1000) provided with same. The damping assembly (100) comprises a connecting part (1), a base plate (2), a first mass spring component (3), and a second mass spring component (4). The connecting part (1) is mounted to a device body (200), and the base plate (2) is located below the connecting part (1); the first mass spring component (3) comprises a first elastic rod (30) and a first mass block (31), the first elastic rod (30) is disposed on the base plate (2), the first elastic rod (30) is solid, and the first mass block (31) is mounted to the first elastic rod (30); the second mass spring component (4) comprises a second elastic rod (40) and a second mass block (41), the second elastic rod (40) is mounted to the base plate (2), at least a part of the second elastic rod (40) is hollow, and the second mass block (41) is mounted to the second elastic rod (40); both the first elastic rod (30) and the second elastic rod (40) pass through the connecting part (1), and at least one among the first elastic rod (30) and the second elastic rod (40) is fixed to the connecting part (1).

Description

Vibration damping assembly and vibration equipment with it

Cross References to Related Applications

This application is based on the Chinese patent application with the application number 202111272804.3 and the application date on October 29, 2021 and the Chinese patent application with the application number 202122640242.5 and the application date on October 29, 2021, and requests the priority of the above-mentioned Chinese patent applications Right, the entire content of the above-mentioned Chinese patent application is hereby incorporated into this application as a reference.

technical field

The present application relates to the field of shock absorbers, in particular to a shock absorber assembly and a vibration device with the same.

Background technique

Electrical equipment will generate some vibration during operation or handling. If no vibration reduction treatment is performed, it is easy to generate some noise due to vibration or affect the service life of electrical equipment due to vibration. In the related art, a vibration absorber is used for vibration reduction. The vibration is three-way, but because the traditional vibration absorber generally adopts one-way vibration absorption, the vibration absorption effect is limited.

Contents of the invention

The present application aims to solve at least one of the technical problems existing in the related art. For this reason, the present application proposes a vibration damping assembly, which forms a three-way vibration absorption and has a good vibration damping effect.

The present application also proposes a vibration device having the above-mentioned vibration damping assembly.

The vibration damping assembly according to the embodiment of the present application includes: a connection part, the connection part is installed to the equipment main body; a base plate, the base plate is located under the connection part; a first mass spring assembly, the The first mass spring assembly includes a first elastic rod and a first mass block, the first elastic rod is arranged on the base plate, the first elastic rod is a solid part, and the first mass block is installed on the The first elastic rod; the second mass spring assembly, the second mass spring assembly includes a second elastic rod and a second mass block, the second elastic rod is mounted on the base plate, the second elastic rod At least a part is formed as a hollow structure, the second mass block is mounted to the second elastic rod, the first elastic rod and the second elastic rod both pass through the connecting part, the first elastic rod and the At least one of the second elastic rods is fixed to the connecting portion.

According to the vibration damping assembly of the embodiment of the present application, the vibration damping effect in three directions can be realized by arranging the first mass spring assembly and the second mass spring assembly, forming three directions of vibration absorption, and the vibration damping effect is good. Furthermore, since the extending direction of the first elastic rod and the second elastic rod are the same, the installation directions of the first mass spring assembly and the second mass spring assembly are the same, which can greatly save space.

In some embodiments of the present application, the shock absorbing assembly further includes a shock absorbing buffer, the shock absorbing buffer is arranged on the base plate and supports the connecting portion, and one end of the first elastic rod is connected to In the shock absorbing buffer member, the other end of the first elastic rod passes through the connecting portion and is provided with the first mass block.

In some embodiments of the present application, the first elastic rod is fixed to the connecting part.

In some embodiments of the present application, the connecting portion is provided with a first through hole, and the second elastic rod is clearance-fitted with the first through hole.

In some embodiments of the present application, the vibration damping assembly further includes a third mass spring assembly, the third mass spring assembly includes a third elastic rod and a third mass block, and the third elastic rod is installed on the base The seat plate, the third elastic rod is a solid piece and the third elastic rod passes through the connecting part, and the third mass block is installed on the third elastic rod.

In some embodiments of the present application, at least one of the cross-sections of the first elastic rod and the third elastic rod is formed in a circular shape.

In some embodiments of the present application, the connecting portion is provided with a second through hole, and the third elastic rod is clearance-fitted with the second through hole.

In some embodiments of the present application, the second mass and the third mass are located on both sides of the connecting portion.

In some embodiments of the present application, the first mass spring assembly further includes a first fastening nut, the first fastening nut is threadedly engaged with the first elastic rod, and the two sides of the first mass block Both are provided with the first fastening nuts to fix the first mass blocks to the first elastic rods.

In some embodiments of the present application, the lower first fastening nut is spaced apart from the connecting portion.

In some embodiments of the present application, the second mass spring assembly further includes a second fastening nut, the second fastening nut is threadedly engaged with the second elastic rod, and the two sides of the second mass block Both are provided with the second fastening nuts to fix the second mass blocks to the second elastic rods.

The vibration equipment according to the embodiment of the present application includes: a main body of the equipment; a vibration damping assembly, the vibration damping assembly is the vibration damping assembly according to any one of the above-mentioned embodiments of the present application, and the connecting part is connected to the equipment main body.

According to the vibration equipment of the embodiment of the present application, by setting the vibration damping assembly, the vibration damping effect in three directions can be realized, forming three-directional vibration absorption, and the vibration damping effect is good. Furthermore, since the extension direction of the first elastic rod and the second elastic rod are the same, the installation directions of the first mass spring assembly and the second mass spring assembly are the same, which can greatly save space.

Additional aspects and advantages of the application will be set forth in part in the description which follows, and in part will be obvious from the description which follows, or may be learned by practice of the application.

Description of drawings

The above and/or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, wherein:

1 is a schematic diagram of a damping assembly according to an embodiment of the present application;

FIG. 2 is a schematic diagram of a vibratory device provided with a vibration damping assembly according to an embodiment of the present application.

Reference signs:

Vibration equipment 1000,

Vibration damping assembly 100, equipment main body 200,

Connection part 1,

Base plate 2,

The first mass spring assembly 3, the first elastic rod 30, the first mass block 31, the first fastening nut 32,

The second mass spring assembly 4, the second elastic rod 40, the second mass block 41, the second fastening nut 42,

Shock absorbing buffer 5,

The third mass spring assembly 6, the third elastic rod 60, the third mass block 61, the third fastening nut 62,

Install nut 7.

Detailed ways

Embodiments of the present application are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary, and are only for explaining the present application, and should not be construed as limiting the present application.

In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Axial", "Radial", "Circumferential", etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, use a specific orientation construction and operation, therefore should not be construed as limiting the application. In addition, the features defined as "first" and "second" may explicitly or implicitly include one or more of these features. In the description of the present application, unless otherwise specified, "plurality" means two or more.

In the description of this application, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected, or integrally connected; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in this application in specific situations.

The vibration damping assembly 100 according to the embodiment of the present application will be described below with reference to FIGS. Any equipment that generates vibration, such as outdoor units of air conditioners, etc.

As shown in FIG. 1 , the vibration damping assembly 100 according to the embodiment of the present application includes: a connecting part 1, a base plate 2, a first mass spring assembly 3 and a second mass spring assembly 4, wherein the connecting part 1 is installed to the equipment Subject 200. The connection part 1 can be connected to any position of the device body 200 , for example, the connection part 1 can be connected to the foot plate of the device body 200 , and the vibration generated by the device body 200 can be transmitted to the connection part 1 . In some examples of the present application, the connecting part 1 and the foot plate of the device body 200 are integrally processed into a molded part, that is, a part of the structure of the device body 200 is used to define the connecting part 1, thereby saving costs and reducing types of parts.

The base plate 2 is located below the connecting portion 1. It should be noted that in the description of this application, the terms “above” and “below” are relative positional relationships, which means that the base plate 2 is located at the connecting portion 1 away from the main body 200 of the device. One side of , indicating that the base plate 2 is placed on the placement surface.

The first mass spring assembly 3 includes a first elastic rod 30 and a first mass block 31, the first elastic rod 30 is arranged on the base plate 2, the first elastic rod 30 is a solid part, and the first mass block 31 is mounted on the first elastic Rod 30. It can be understood that the first elastic rod 30 can provide stiffness in three directions, that is, tension-compression stiffness K _Az and bending stiffness K _Ax , K _Ay . Since the first elastic rod 30 is a solid structure, the tension-compression stiffness is obviously greater than Bending rigidity, so that the bending rigidity of the first elastic rod 30 and the quality provided by the first mass block 31 can be used to form a dynamic vibration absorber. When the excitation frequencies on 1 overlap, part of the vibration energy can be transferred to the first mass-spring assembly 3 , so as to achieve the purpose of controlling the vibration of the device main body 200 .

It should be noted that since the first elastic rod 30 not only provides stiffness, but also distributes the first mass block 31, the first mass block 31 is not an ideal mass point, but a block with distributed mass, the first elastic rod 30 and the first mass block 31 The distributed mass characteristic of the mass block 31 has a relatively obvious influence on the calculation accuracy of the natural frequency, so when calculating the natural frequency of the first mass-spring assembly 3, a complete finite element of the first elastic rod 30 and the first mass block 31 can be established model, considering the mass distribution properties of both. If the actual measurement finds that the natural frequency of the first mass-spring assembly 3 composed of the first elastic rod 30 and the first mass 31 deviates from the design, the frequency can be fine-tuned by adjusting the position of the first mass 31 on the first elastic rod 30 , after the adjustment is completed, the first mass block 31 is fixed.

The second mass-spring assembly 4 includes a second elastic rod 40 and a second mass block 41, the second elastic rod 40 is mounted on the base plate 2, at least a part of the second elastic rod 40 is formed as a hollow structure, and the second mass block 41 is installed To the second elastic rod 40 , both the first elastic rod 30 and the second elastic rod 40 pass through the connection part 1 , and at least one of the first elastic rod 30 and the second elastic rod 40 is fixed to the connection part 1 . It can be understood that the second elastic rod 40 can provide rigidity in three directions, that is, tension-compression stiffness _KBz and bending stiffness _KBx , _KBy . Since at least a part of the second elastic rod 40 is formed as a hollow structure, it can Reduce the tension-compression stiffness of the second elastic rod 40 and increase the bending stiffness of the second elastic rod 40, thereby utilizing the tension-compression stiffness of the second elastic rod 40 and the quality provided by the second mass block 41 to form a dynamic vibration absorber, When the natural frequency of the second mass spring assembly 4 overlaps with the excitation frequency transmitted from the device body 200 to the connection part 1 and the base plate 2, a part of the vibration energy can be transferred to the second mass spring assembly 4, thereby achieving the control of the device body 200 vibrations on purpose.

It should be noted that if the actual measurement finds that the natural frequency of the second mass-spring assembly 4 composed of the second elastic rod 40 and the second mass block 41 deviates from the design, it can be adjusted by adjusting the second mass block 41 in the second elastic rod 40 Fine-tune the frequency at the upper position, and fix the second mass block 41 after the adjustment is completed.

For the convenience of description, the extension direction of the first elastic rod 30 and the second elastic rod 40 is defined as the Z-axis direction, and the horizontal direction includes the X-axis direction and the Y-axis direction.

Specifically, according to the vibration damping assembly 100 of the embodiment of the present application, the bending stiffness of the first elastic rod 30 and the mass provided by the first mass block 31 can be used to form a dynamic vibration absorber, and the tension and compression of the second elastic rod 40 can be used to form a dynamic vibration absorber. The stiffness and the quality provided by the second mass block 41 form a dynamic vibration absorber, whereby the first mass spring assembly 3 and the second mass spring assembly 4 can reduce frequency vibrations in different directions, that is, the first mass spring assembly 3 can lower the device body 200 The characteristic frequency vibration in the horizontal direction (X-axis direction and Y-axis direction), the second mass spring assembly 4 can reduce the characteristic frequency vibration in the vertical direction (Z-axis direction) of the device main body 200 .

According to the vibration damping assembly 100 of the embodiment of the present application, the vibration damping effect in three directions can be realized by setting the first mass spring assembly 3 and the second mass spring assembly 4 , forming three directions of vibration absorption, and the vibration damping effect is good. Furthermore, since the first elastic rod 30 and the second elastic rod 40 extend in the same direction, the installation direction of the first mass spring assembly 3 and the second mass spring assembly 4 is the same, which can greatly save space.

As shown in FIG. 1 , in some embodiments of the present application, the vibration damping assembly 100 further includes a vibration damping buffer 5, the vibration damping buffer 5 is arranged on the base plate 2 and the vibration damping buffer 5 supports the connecting portion 1, One end of the first elastic rod 30 is connected to the shock absorber 5 , and the other end of the first elastic rod 30 passes through the connecting portion 1 and is provided with a first mass block 31 . That is to say, the shock absorbing buffer 5 can play the role of shock absorbing and buffering, and the vibration transmitted to the connecting part 1 can be transmitted to the base plate 2 after being buffered by a part of the shock absorbing buffer 5, thereby further improving the shock absorbing effect. The damping effect of the assembly 100. Optionally, the shock absorbing buffer member 5 may be a rubber material member, a metal elastic member, or the like. In some examples of the present application, the connecting part 1 is provided with an installation hole for installing the vibration-damping buffer 5 , so as to facilitate the positioning and installation of the vibration-damping buffer 5 .

In some examples of the present application, as shown in FIG. 1 , the first elastic rod 30 is fixed to the connecting part 1, thereby avoiding the displacement of the vibration damping assembly 100 due to vibration, and ensuring the vibration capability of the connecting part 1. It can be transferred to the first mass spring assembly 3 to achieve the purpose of vibration damping. Further, the first elastic rod 30 can be fixed to the connection part 1 through the installation nut 7, the installation nut 7 is threadedly matched with the first elastic rod 30 and the installation nut 7 stops on the connection part 1, that is to say, the first elastic rod 30 constitute the mounting bolts of the shock absorbing buffer 5, so that functional integration can be realized and parts can be reduced.

In some embodiments of the present application, as shown in FIG. 1 , the first mass spring assembly 3 further includes a first fastening nut 32, the first fastening nut 32 is screwed with the first elastic rod 30, and the first mass block 31 First fastening nuts 32 are provided on both sides to fix the first mass block 31 to the first elastic rod 30 . That is to say, the top of the first mass block 31 is provided with the first fastening nut 32, the bottom of the first mass block 31 is provided with the first fastening nut 32, each first fastening nut 32 is connected with the first elastic rod 30 The thread fits to clamp the first mass block 31 between the two first fastening nuts 32 to realize the positioning installation of the first mass block 31 . Thereby fixing the first mass block 31 by two first fastening nuts 32, it is convenient to adjust the position of the first mass block 31 on the first elastic rod 30, and it is convenient to fix the first mass block 31, so that the first mass spring assembly 3 The structure is simple. It can be understood that, due to the certain mass of the first fastening nut 32 , when calculating the natural frequency of the first mass-spring assembly 3 , the position and mass of the first fastening nut 32 need to be considered.

Further, the first fastening nut 32 located below is spaced apart from the connecting part 1, so as to prevent the connecting part 1 from colliding with the first fastening nut 32 when it vibrates and generate noise, and can also limit the vertical deflection of the connecting part 1. The amount of displacement acts as a limit.

In some specific examples of the present application, as shown in FIG. 1 , the lower end of the first elastic rod 30 is inserted into the shock absorbing buffer 5 through the connecting part 1 , the mounting nut 7 is threadedly fitted with the first elastic rod 30 and the nut is installed 7 abuts against the upper surface of the connecting portion 1 to fix the first elastic rod 30 to the connecting portion 1 and realize the fixed installation of the shock absorbing buffer member 5 . The first mass block 31 is located above the mounting nut 7, and the first fastening nuts 32 are arranged on the upper and lower sides of the first mass block 31, and the two first fastening nuts 32 are threaded with the first elastic rod 30 so as to The first mass block 31 is clamped on the first elastic rod 30 , and the lower first fastening nut 32 is spaced apart from the mounting nut 7 .

In some examples of the present application, in order to save costs, the first elastic rod 30 only needs to process threads near the installation position of the first mass block 31 and the installation position of the installation nut 7 . In some specific examples of the present application, in order to facilitate precise adjustment of the position of the first mass 31 on the first elastic rod 30 , the thread of the first elastic rod 30 is selected as a thread with fine teeth and small pitch.

In some embodiments of the present application, as shown in FIG. 1 , the connecting part 1 is provided with a first through hole, and the second elastic rod 40 is loosely matched with the first through hole. That is to say, in the horizontal direction, the second elastic rod 40 is spaced apart from the inner wall of the first through hole, so that the gap between the second elastic rod 40 and the first through hole can play a role for the second elastic rod 40 The limit function in the horizontal direction, so that by adjusting the position of the second elastic rod 40 in the first through hole, the position of the entire vibration damping assembly 100 relative to the device main body 200 in the horizontal direction can be adjusted.

It can be understood that during the operation or transportation of the equipment main body 200, due to vibration, a certain offset may occur between the equipment main body 200 and the vibration damping assembly 100. According to the vibration damping assembly 100 of the embodiment of the present application, through The clearance fit between the second elastic rod 40 and the first through hole can also limit the horizontal offset of the device main body 200 relative to the vibration damping assembly 100 .

In some embodiments of the present application, as shown in FIG. 1 , the second mass spring assembly 4 further includes a second fastening nut 42, the second fastening nut 42 is threadedly fitted with the second elastic rod 40, and the second mass block 41 Two fastening nuts 42 are provided on both sides to fix the second mass block 41 to the second elastic rod 40 . That is to say, the second fastening nut 42 is arranged on the top of the second mass block 41, and the second fastening nut 42 is arranged on the bottom of the second mass block 41, and each second fastening nut 42 is connected with the second elastic rod 40 The thread fits to clamp the second mass block 41 between the two second fastening nuts 42 to realize the positioning installation of the second mass block 41 . Thereby fixing the second mass block 41 by two second fastening nuts 42, it is convenient to adjust the position of the second mass block 41 on the second elastic rod 40, and it is convenient to fix the second mass block 41, so that the second mass spring assembly 4 The structure is simple. It can be understood that, due to the certain mass of the second fastening nut 42 , when calculating the natural frequency of the second mass-spring assembly 4 , the position and mass of the second fastening nut 42 need to be considered.

In some examples of the present application, in order to save costs, the second elastic rod 40 only needs to process threads near the installation position of the second mass block 41 . In some specific examples of the present application, in order to facilitate precise adjustment of the position of the second mass 41 on the second elastic rod 40 , the thread of the second elastic rod 40 is selected as a thread with fine teeth and small pitch.

As shown in FIG. 1 , in some embodiments of the present application, the second fastening nut 42 located below is spaced apart from the connecting part 1 so as to prevent the connecting part 1 from colliding with the second fastening nut 42 when it vibrates. Noise, and the vertical offset of the connection part 1 can also be limited.

In some examples of the present application, a gasket is provided between the second fastening nut 42 and the second mass block 41. After fine-tuning the position of the second mass block 41, the second fastening nut 42 and the second mass block 41 can be adjusted. The thickness of the gasket between the mass blocks 41 ensures that the limiting distance between the second fastening nut 42 and the connecting part 1 remains unchanged.

According to some embodiments of the present application, as shown in FIG. 1 , the damping assembly 100 further includes a third mass-spring assembly 6, the third mass-spring assembly 6 includes a third elastic rod 60 and a third mass block 61, and the third elastic The rod 60 is installed on the base plate 2 , the third elastic rod 60 is a solid piece and passes through the connection part 1 , and the third mass block 61 is installed on the third elastic rod 60 . It can be understood that the third elastic rod 60 can provide stiffness in three directions, that is, tension-compression stiffness K _Cz and bending stiffness K _Cx , K _Cy . Since the third elastic rod 60 is a solid structure, the tension-compression stiffness is obviously greater than Bending stiffness, thus the bending stiffness of the third elastic rod 60 and the mass provided by the third mass block 61 can be used to form a dynamic vibration absorber, when the natural frequency of the third mass spring assembly 6 and the device main body 200 are transmitted to the base When the excitation frequencies on the plate 2 overlap, part of the vibration energy can be transferred to the third mass-spring assembly 6 , so as to achieve the purpose of controlling the vibration of the device main body 200 .

It should be noted that since the third elastic rod 60 not only provides stiffness, but also distributes the third mass block 61, the third mass block 61 is not an ideal mass point, but a block with distributed mass, the third elastic rod 60 and the third mass block 61 The distributed mass characteristic of the mass block 61 has a relatively obvious influence on the calculation accuracy of the natural frequency, so when calculating the natural frequency of the third mass-spring assembly 6, a complete finite element of the third elastic rod 60 and the third mass block 61 can be established model, considering the mass distribution properties of both. If the actual measurement finds that the natural frequency of the third mass-spring assembly 6 composed of the third elastic rod 60 and the third mass 61 deviates from the design, the frequency can be fine-tuned by adjusting the position of the third mass 61 on the third elastic rod 60 , after the adjustment is completed, the third mass block 61 is fixed.

According to the vibration damping assembly 100 of the embodiment of the present application, the vibration damping effect can be improved by arranging the first mass spring assembly 3 , the second mass spring assembly 4 and the third mass spring assembly 6 .

In some embodiments of the present application, at least one of the cross-sections of the first elastic rod 30 and the third elastic rod 60 is formed in a circular shape. That is to say, at least one of the first elastic rod 30 and the third elastic rod 60 is formed into a cylindrical shape. The rigidity is the same, so that the formed dynamic vibration absorber can reduce the specific frequency vibration of the equipment main body 200 in the horizontal direction.

In some embodiments of the present application, as shown in FIG. 1 , the connecting part 1 is provided with a second through hole, and the third elastic rod 60 is in clearance fit with the second through hole. That is to say, in the horizontal direction, the third elastic rod 60 is spaced apart from the inner wall of the second through hole, so that the gap between the third elastic rod 60 and the second through hole can play a role in the third elastic rod 60. The limit function in the horizontal direction, so that by adjusting the position of the third elastic rod 60 in the second through hole, the position of the entire damping assembly 100 relative to the equipment main body 200 in the horizontal direction can be adjusted, and the equipment main body can also be limited. The horizontal offset of 200 relative to the shock absorber assembly 100.

In some embodiments of the present application, as shown in FIG. 1 , the third mass spring assembly 6 further includes a third fastening nut 62 , the third fastening nut 62 is screwed with the third elastic rod 60 , and the third mass block 61 Third fastening nuts 62 are provided on both sides of the third mass block 61 to fix the third mass block 61 to the third elastic rod 60 . That is to say, the third fastening nut 62 is provided above the third mass block 61, and the third fastening nut 62 is provided below the third mass block 61, and each third fastening nut 62 is connected to the third elastic rod 60 The thread fits to clamp the third mass block 61 between the two third fastening nuts 62 to realize the positioning installation of the third mass block 61 . Thereby fixing the third mass block 61 by two third fastening nuts 62, it is convenient to adjust the position of the third mass block 61 on the third elastic rod 60, and it is convenient to fix the third mass block 61, so that the third mass spring assembly 6 The structure is simple. It can be understood that, due to the certain mass of the third fastening nut 62 , when calculating the natural frequency of the third mass-spring assembly 6 , the position and mass of the third fastening nut 62 need to be considered.

In some examples of the present application, in order to save costs, the third elastic rod 60 only needs to process threads near the installation position of the third mass block 61 . In some specific examples of the present application, in order to facilitate precise adjustment of the position of the third mass 61 on the third elastic rod 60 , the thread of the third elastic rod 60 is selected as a thread with fine teeth and small pitch.

As shown in FIG. 1 , in some embodiments of the present application, the upper third fastening nut 62 is spaced apart from the connecting part 1 so as to prevent the connecting part 1 from colliding with the third fastening nut 62 when it vibrates. Noise, and the vertical offset of the connection part 1 can also be limited.

In some examples of the present application, a gasket is provided between the third fastening nut 62 and the third mass block 61. After fine-tuning the position of the third mass block 61, the third fastening nut 62 and the third The thickness of the gasket between the mass blocks 61 ensures that the limiting distance between the third fastening nut 62 and the connecting part 1 remains unchanged.

As shown in FIG. 1 , in some embodiments of the present application, the second mass 41 and the third mass 61 are located on both sides of the connection part 1 . In the example shown in FIG. 1 , the second mass block 41 is located above the connecting portion 1, and the third mass block 61 is located below the connecting portion 1, so that the second mass spring assembly can be made 4 and the third mass spring assembly 6 have different natural frequencies, so that vibrations of different frequencies can be absorbed, and the vibration damping effect of the vibration damping assembly 100 can be improved. Section 1 displacement.

The vibration damping assembly 100 according to a specific embodiment of the present application will be described below with reference to FIG. 1 .

As shown in FIG. 1 , the vibration damping assembly 100 according to the embodiment of the present application includes a connecting part 1, a base plate 2, a vibration damping buffer 5, a first mass spring assembly 3, a second mass spring assembly 4 and a third mass spring assembly. Mass spring assembly6. The connecting part 1 is provided with a first through hole and a second through hole.

The first mass-spring assembly 3 includes a first elastic rod 30, a first mass block 31, and two first fastening nuts 32, and the second mass-spring assembly 4 includes a second elastic bar 40, a second mass block 41, and two first fastening nuts 32. Two fastening nuts 42 . The third mass spring assembly 6 includes a third elastic rod 60 , a third mass block 61 and two third fastening nuts 62 .

The shock absorber 5 , the second elastic rod 40 and the third elastic rod 60 are respectively fixed on the base plate 2 , and the shock absorber 5 supports the connection part 1 .

The lower end of the first elastic rod 30 is inserted into the shock absorbing buffer 5 through the connecting part 1, the mounting nut 7 is threadedly engaged with the first elastic rod 30 and the mounting nut 7 is abutted against the upper surface of the connecting part 1 to fix the first elastic Rod 30. The first mass block 31 is overlaid on the first elastic rod 30, and the upper and lower sides of the first mass block 31 are provided with first fastening nuts 32, and the first fastening nuts 32 are threadedly matched with the first elastic rod 30 to clamp The first mass block 31 and the first fastening nut 32 located below are spaced apart from the mounting nut 7 .

The upper end of the second elastic rod 40 passes through the first through hole, and the second elastic rod 40 is clearance fit with the first through hole. The second mass block 41 is located above the connecting portion 1, the second mass block 41 is sheathed on the second elastic rod 40, the upper and lower sides of the second mass block 41 are provided with second fastening nuts 42, and the second fastening nuts 42 is threadedly engaged with the second elastic rod 40 to clamp the second mass block 41 , and the second fastening nut 42 located below is spaced apart from the connecting part 1 .

The second elastic rod 40 is a hollow structure, it can be understood that, because the second elastic rod 40 is a hollow structure, on the one hand, the tension-compression stiffness of the second elastic rod 40 can be reduced, and the quality of the second mass spring assembly 4 can be reduced; On the one hand, the bending rigidity of the second elastic rod 40 is improved, thereby improving the impact resistance of the second elastic rod 40 when it is limited.

It can be understood that, in addition to the function of dynamic vibration absorption, the second mass spring assembly 4 also provides a function of limiting. The distance between the second elastic rod 40 and the first passing hole can function as a limit in the horizontal plane. The distance between the second fastening nut 42 and the connecting part 1 can serve as a vertical (+Z direction) limiting function.

The upper end of the third elastic rod 60 passes through the second through hole, and the third elastic rod 60 is clearance fit with the second through hole. The third mass block 61 is located below the connecting portion 1, the third mass block 61 is sheathed on the third elastic rod 60, the upper and lower sides of the third mass block 61 are provided with third fastening nuts 62, the third fastening nuts 62 is threadedly engaged with the third elastic rod 60 to clamp the third mass block 61 , and the third fastening nut 62 located above is spaced apart from the connection part 1 .

It can be understood that, in addition to the function of dynamic vibration absorption, the third mass spring assembly 6 also provides a function of limiting. The distance between the third elastic rod 60 and the second passing hole can function as a limit in the horizontal plane. The distance between the third fastening nut 62 and the connecting part 1 can serve as a vertical (-Z direction) limiting function.

It should be noted that, in this application, what the first mass spring assembly 3 (the first elastic rod 30, the first mass block 31 and the first fastening nut 32) reduces is the vibration (horizontal direction) of the connecting part 1, the first What the second mass spring assembly 4 (the second elastic bar 40, the second mass block 41 and the second fastening nut 42) reduces is that the base plate 2 vibrates (vertical direction), and the third mass spring assembly 6 (the third elastic bar 60 , the third mass block 61 and the third fastening nut 62) reduce the vibration (horizontal direction) of the base plate 2, because the first mass spring assembly 3 and the third mass spring assembly 6 can all reduce horizontal vibration, and only There is the second mass spring assembly 4 to reduce vertical vibration. In order to compensate for the control ability of vertical vibration, in the vibration damping design, the horizontal-to-vertical ratio of the selected vibration-damping buffer 5 should be a little larger (that is, the vertical direction of the vibration-damping buffer 5). The stiffness should be less than the transverse stiffness), so as to achieve the purpose of three-way vibration balance control.

The installation method of the damping assembly 100 according to the embodiment of the present application is as follows:

First, the positioning and adjustment of the shock absorbing buffer 5, the second elastic rod 40 and the third elastic rod 60 are carried out. to mark.

Then, the vibration damping material 5 and the base plate 2 are attached and fixed.

Then, the second elastic rod 40 and the third elastic rod 60 are installed and fixed on the base plate 2 .

Then, the third mass block 61 is fixed on the third elastic rod 60 by using the third fastening nut 62 .

Then, the connecting part 1 passes through the second elastic rod 40 and the third elastic rod 60 and is placed on the shock-absorbing buffer member 5 .

Then, the first elastic rod 30 is passed through the connecting part 1 , screwed into the shock-absorbing buffer member 5 , and the first elastic rod 30 is fixed to the connecting part 1 by using the mounting nut 7 .

Then, the first mass block 31 is fixed on the first elastic rod 30 by using the first fastening nut 32 .

Then, the second mass block 41 is fixed on the second elastic rod 40 by using the second fastening nut 42 .

Finally, carry out the natural frequency test of the shock absorber. According to the test results, fine-tune the position of the mass block on the corresponding elastic rod. After the adjustment, adjust the second fastening nut 42 and the second mass block 41, the third fastening nut 62 and the The thickness of the gasket between the third mass blocks 61 makes the vertical distance between the second fastening nut 42 , the third fastening nut 62 and the connecting part 1 meet the requirements.

According to the vibration damping assembly 100 of the embodiment of the present application, the flexural stiffness and tension-compression stiffness of the elastic rod are combined with the mass block to form a three-way vibration absorber, and the installation directions of the three-way vibration absorbers are the same, which greatly saves space.

The vibration damping assembly 100 according to the embodiment of the present application also has the following advantages: spatial integration: the vibration damping buffer 5, the first mass spring assembly 3 to the third mass spring assembly 6, the horizontal limit and the vertical limit are all integrated in the Near the machine feet, reduce the number of parts and save space.

Functional integration: functional integration of parts, reducing the number of parts, including: the first elastic rod 30 is integrated with the mounting bolts of the shock absorbing buffer 5, and the second fastening nut 42 and the third fastening nut 62 integrate fastening and limiting functions , the second elastic rod 40 and the third elastic rod 60 provide the rigidity function and the limit function, and the connecting part 1 integrates the installation interface function and the limit function.

Effect integration: each mass spring component can achieve a vibration damping effect of not less than 3dB on a specific frequency vibration, and can effectively suppress the specific frequency vibration transmitted to the base plate 2 . At the same time, by rationally designing the ratio of lateral stiffness and vertical stiffness of the damping buffer 5 (generally, the ratio of lateral and vertical stiffness should be greater than 1.5), the vertical vibration damping effect is improved, and combined with the three-way vibration absorption effect, balanced control of three-way vibration is achieved.

The vibration equipment 1000 according to the embodiment of the present application includes: the equipment main body 200 and the vibration damping assembly 100, the vibration damping assembly 100 is the vibration damping assembly 100 according to the above-mentioned embodiment of the application, and the connecting part 1 is connected to the equipment main body 200.

According to the vibration equipment 1000 of the embodiment of the present application, by setting the vibration damping assembly 100, the vibration damping effect in three directions can be realized, forming a three-way vibration absorption, and the vibration damping effect is good. Furthermore, since the first elastic rod 30 and the second elastic rod 40 extend in the same direction, the installation direction of the first mass spring assembly 3 and the second mass spring assembly 4 is the same, which can greatly save space.

In some examples of the present application, there are multiple connecting parts 1 , and the multiple connecting parts 1 are connected to the device main body 200 . The base plates 2 of multiple damping assemblies 100 can be integrated into one plate body. Therefore, not only the vibration damping effect is improved, but also the installation is facilitated.

In the description of this specification, reference to the terms "one embodiment," "some embodiments," "exemplary embodiments," "example," "specific examples," or "some examples" is intended to mean that the implementation A specific feature, structure, material, or characteristic described by an embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present application. The scope of the application is defined by the claims and their equivalents.

Claims

A damping assembly, including:

a connecting part, the connecting part is mounted to the device main body;

a base plate, the base plate is located below the connecting portion;

The first mass spring assembly, the first mass spring assembly includes a first elastic rod and a first mass block, the first elastic rod is arranged on the base plate, the first elastic rod is a solid part, the a first mass is mounted to the first elastic rod;

The second mass spring assembly, the second mass spring assembly includes a second elastic rod and a second mass block, the second elastic rod is mounted to the base plate, at least a part of the second elastic rod is formed as a hollow structure, the second mass block is installed to the second elastic rod, the first elastic rod and the second elastic rod pass through the connecting part, the first elastic rod and the second elastic rod At least one of the rods is fixed to the connection portion.
The vibration damping assembly according to claim 1, further comprising a vibration damping buffer, the vibration damping buffer is arranged on the base plate and supports the connecting portion, and one end of the first elastic rod is connected to To the shock absorber, the other end of the first elastic rod passes through the connecting portion and is provided with the first mass block.
The vibration damping assembly according to claim 2, wherein the first elastic rod is fixed to the connecting portion.
The vibration damping assembly according to claim 3, wherein the connecting portion is provided with a first through hole, and the second elastic rod is clearance-fitted with the first through hole.
The damping assembly according to any one of claims 1-4, further comprising a third mass-spring assembly, the third mass-spring assembly comprising a third elastic rod and a third mass, the third The elastic rod is installed on the base plate, the third elastic rod is a solid part and passes through the connecting part, and the third mass block is installed on the third elastic rod.
The vibration damping assembly according to claim 5, wherein at least one of a cross-section of the first elastic rod and a cross-section of the third elastic rod is formed in a circular shape.
The vibration damping assembly according to claim 5 or 6, wherein the connecting portion is provided with a second through hole, and the third elastic rod is loosely fitted with the second through hole.
The vibration damping assembly according to any one of claims 5-7, wherein the second mass and the third mass are located on both sides of the connecting portion.
The vibration damping assembly according to any one of claims 1-8, wherein the first mass spring assembly further comprises a first fastening nut threaded with the first elastic rod Cooperating, both sides of the first mass block are provided with the first fastening nuts to fix the first mass block to the first elastic rod.
The vibration damping assembly according to claim 9, wherein the first fastening nut located below is spaced apart from the connecting portion.
The vibration damping assembly according to any one of claims 1-10, wherein the second mass-spring assembly further comprises a second fastening nut threaded with the second elastic rod Cooperating, both sides of the second mass block are provided with the second fastening nuts to fix the second mass block to the second elastic rod.
A vibration device, comprising:

device body;

A vibration damping assembly, wherein the vibration damping assembly is the vibration damping assembly according to any one of claims 1-11, the connecting portion is connected to the device main body.